United States         Office of Solid Waste and     EPA/540/9-91/002 ^ •'
            Environmental Protection     Emergency Response       October 1991
            Agency           Washington, DC 20460
<>EPA      Innovative Treatment
            Technologies
            Overview and Guide to
            Information Sources

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                                EPA/540/9-91/002
                                  October 1991
INNOVATIVE TREATMENT
TECHNOLOGIES:
OVERVIEW AND GUIDE TO
INFORMATION SOURCES
         Office of Solid Waste and Emergency Response
             Technology Innovation Office
               Washington, D.C 20460
                 October 1991
                       U.S. Environmental^Protcction .' ~;:nc\f
                       Region 5, Library (P!..-•! '• '
                       77 West Jackson l-?c;: '    .  ,./,
                       Chicago, IL 6061)-;c,.,.
                               Printed on Recycled Paper

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                                        NOTICE


       The preparation of this guide has been funded by the U.S. Environmental Protection
Agency.  It has been subject to the Agency's review and it has been approved for publication as
an EPA document.  Mention of trade names or commercial products does not constitute an
endorsement or recommendation  for use.
                                           11

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                                       FOREWORD
       This document was originally prepared by the U.S. Environmental Protection Agency (EPA)
Technology Innovation Office to support a training module on innovative treatment technologies
which was presented at the On Scene Coordinator (OSC)/Remedial Project Manager (RPM) Training
Academy.  It represents an effort to gather, under one cover, a wide variety of existing technical
guidance and information that describes the status and capabilities of selected technologies.

       EPA recognizes that the manual is not comprehensive;  some technologies were omitted due
largely to practical considerations.  For example, solidification/stabilization technologies were not
included in this version of the  guide and may be included in future update.  Although incineration
technologies are established technologies by the definition used in this manual, they are included to
provide the user with a benchmark for evaluating innovative treatment technologies. A revised and
expanded version of this document may be prepared in the future, based on comments we receive.

       This document is intended as a reference guide to assist site project managers, consulting
engineers, responsible parties, and owner/operators in their efforts to identify current literature on
innovative treatment technologies and to support the overall decision making process for hazardous
waste site remediation or corrective action.
                                                        Walter W. Kovalick, Jr., Ph.D.
                                                        Director, Technology Innovation Office
                                            111

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                                        ABSTRACT

       This document is a compilation of information on innovative treatment technologies now
being used in the Superfund program.  It provides a broad overview of innovative treatment
technologies to assist site managers in their initial evaluation of innovative treatment technologies.
The material is focussed on a limited number of technologies, primarily those that treat organic
contamination. The technologies discussed include:

                            Incineration
                            Thermal Desorption
                            Soil Washing
                            Solvent Extraction
                            Dechlorination
                            Bioremediation
                            Vacuum Extraction
                            In situ Vitrification
                            Ground Water Treatment

       For each category of treatment, the document provides a brief description of the physical,
chemical, and biological processes used by the technologies in that category. Summaries of the
status, applications, strengths, and weaknesses of the technologies follow the descriptions.  Where
the information is available, the document includes facts on the characteristics of the waste or
sites that may affect the performance of the technology.  Also included, where available, are
overview reference materials such as technical bulletins, journal articles, engineering references
and a list and summary of information on remedial and  removal sites where these technologies
have been selected. The contacts who  are listed as responsible for these sites are EPA, State,  and
contractor personnel who have experience with issues related to the application of these
technologies at specific sites.
                                             IV

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                              TABLE OF CONTENTS



Section                                                                     Page



Notice	  ii



Foreword	  Hi



Abstract	  iv



Abbreviations	  vi



Acknowledgements	  vii





1.0    INTRODUCTION	  1-1



2.0    INCINERATION	  2-1



3.0    THERMAL  DESORPTION  	  3-1



4.0    SOIL WASHING	  4-1



5.0    CHEMICAL EXTRACTION	  5-1



6.0    DECHLORINATION	  6-1



7.0    BIOREMEDIATION 	  7-1



8.0    VACUUM EXTRACTION  	  8-1



9.0    IN SITU VITRIFICATION  	  9-1



10.0   GROUNDWATER TREATMENT TECHNOLOGIES	   10-1



11.0   APPENDICES	   11-1



12.0   BIBLIOGRAPHY  	   12-1
Note:  More detailed table of contents may be found at the beginning of each section.

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                                     Abbreviations
APC         air pollution control
A PEG        alkaline metal hydroxide/polyethylene glycol
ATEG        alkaline metal hydroxide/tetraethylene glycol
ATTIC       alternative treatment technology information center
BCD         base catalyzed decomposition
BEST        basic extractive sludge treatment
BOD         biological oxygen demand
BTEX        benzene, toluene, ethlybenzene, xylene
BTU         british thermal units
CERCLA     Comprehensive Environmental Response, Compensation, and Liability Act
cm/s         centimeters per second
COD         chemical oxygen demand
cy           cubic yard
DCA         dichloroethane
DCE         dichloroethene
DOE         Department of Energy
DRE         destruction and removal efficiency
EPA         Environmental Protection Agency
FY          fiscal year
ISV          in situ vitrification
KPEG        potassium hydroxide/polyethylene glycol
Kw-hr/yd3   kilowatt hours per cubic yard
NAPL        nonaqueous phase liquids
NCP         National Contingency Plan
NPL         National Priorities List
ORD         Office of Research and Development
OSC         on scene coordinator
OSWER      Office of Solid  Waste and Emergency Response
PAH         polynuclear aromatic hydrocarbon
PCB         polychlorinated biphenyl
PCE         perchloroethylene
PCP         pentachlorophenol
PIC          product of incomplete combustion
ppb          parts per billion
ppm         parts per million
PRP         potentially responsible party
RCRA       Resource Conservation and Recovery Act
ROD         Record of decision
RPM         remedial project manager
RSKERL     Robert S. Kerr  Environmental Research Laboratory, Ada, OK (U.S. EPA)
SARA        Superfund Amendments and Reauthorization Act
SITE         Superfund Innovative Technology Evaluation program
START      Superfund Technical Assistance Response Team
SVOC        semivolatile organic compounds
TCA         trichloroethane
TCE         trichloroethylene
TEA         triethylamine
TIO         Technology Innovation Office
TOC         total organic carbon
USATHAMA United States Army Toxics and Hazardous Materials Agency
USGS        United States Geological Survey
UST         underground storage tanks
VOC         volatile organic compound
                                           VI

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                                   Acknowledgements

       This report was prepared under the direction of John Kingscott and John Quander of the
Technology Innovation Office. The guide was compiled by PRC EMI under Contract No. 68-WO-
0034.

       The authors would like to  acknowledge the technical contributions of Dave Pepson and
Nancy Willis of PRC.  Deborah Lyne of PRC deserves special recognition for her efforts to organize,
compile, and revise this document. The authors would also like to thank our peer reviewers and
authors of the papers used in the  document, especially those prepared by  EPA's Ada, OK and
Cincinnati, OH Office of Research and Development Laboratories.
                                          vn

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                            TABLE OF CONTENTS

Section                                                                 Page


1.0  INTRODUCTION	   1-1

      1.1    EXHIBIT 1  - SUMMARY OF ALTERNATIVE TREATMENT
           TECHNOLOGIES THROUGH FY 90	  1-2

      1.2    EXHIBIT 2  - EMERGENCY RESPONSES:  SUMMARY OF
           INNOVATIVE TECHNOLOGIES USED FOR SOURCE CONTROL  	  1-3

      1.3    EXHIBIT 3  - EPA ACTIVITIES RELATED TO INNOVATIVE
           TECHNOLOGIES 	  1-4

      1.4    EXHIBIT 4  - TREATMENT TECHNOLOGIES FOR CONTAMINATED
           SOILS	  1-8

      1.5    EXHIBIT 5  - STATUS OF SELECTED TECHNOLOGIES - SUPERFUND
           SOILS 	  1-9

      1.6    EXHIBIT 6  - TREATMENT TECHNOLOGY GROUPINGS	  1-10

      1.7    EXHIBIT 7  - INNOVATIVE TREATMENT TECHNOLOGIES: SEMI-
           ANNUAL STATUS REPORT-SUMMARY STATISTICS	  1-13

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                                  1.0  INTRODUCTION

BACKGROUND

       With the passage of the Comprehensive Environmental Response, Compensation, and
Liability Act (CERCLA), or Superfund, Congress made a commitment to protecting human
health and the environment from uncontrolled hazardous wastes.  At that time, the nation was
just beginning to understand the scope and complexity of this challenge.  The number of national
priority sites now exceeds 1,200, and the number of uncontrolled sites that may need to be
addressed by state and federal programs may range from 130,000 to 425,000, as estimated by the
U.S. General Accounting Office.

       In the early years of the Superfund program, the primary method for handling hazardous
waste was land disposal, which can be cost effective in the short run but can create greater long-
term problems and costs. When CERCLA was amended in 1986 by the Superfund Amendments
and Reauthorization Act (SARA),  an emphasis was placed on achieving long-term effectiveness
and permanence of remedies at Superfund sites. The revised National Oil and Hazardous
Substances Pollution Contingency Plan promulgated in March  1990, provides a regulatory
framework for implementing this concept and emphasizes the  use of "permanent solutions and
alternative treatment technologies or resource recovery technologies to the maximum extent
practicable."

       The universe of Superfund sites comprises a broad array of physical, chemical, and
environmental conditions that  need varying types of remediation. Cleanup efforts are no longer
dominated by a few technologies; rather, a growing number of innovative technologies are being
explored by state and Federal  agencies, and private parties.  Exhibits 1 and  2 portray the extent
to which some of these technologies are planned for use as remedial source controls (Exhibit  1)
and emergency response actions (Exhibit 2) at Superfund sites. The use of innovative
technologies offers the potential for cost-effective, long-term  solutions to hazardous waste
cleanup and may be the key to implementing both the CERCLA and Resource  Conservation and
Recovery Act (RCRA) programs successfully.

       The U.S. Environmental Protection Agency (EPA) has  taken initiatives in policy,
technical, and  informational arenas to foster the exploration and application of new remediation
techniques.  A summary of some of these is provided in Exhibit 3. In addition, EPA  has
established the Technology Innovation Office (TIO), whose primary goals are (1) to develop a
strategy for addressing the regulatory, institutional, and informational impediments that constrain
                                           1-1

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  1.1
EXHIBIT 1 - SUMMARY OF ALTERNATIVE TREATMENT TECHNOLOGIES
THROUGH FY 90
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1.3          EXHIBIT 3 - EPA ACTIVITIES RELATED TO INNOVATIVE
            TECHNOLOGIES
    Policy
       SARA/NCP
       Superfund Management Review (90-Day Study)
       Use of Treatment Technologies for Superfund Remedies
       (OSWER Directive No. 9355.0-26)
       Furthering the Use of Innovative Treatment Technologies in OSWER Programs*
       (OSWER Directive No. 9380.0-17 FS)

    Information Management
       Bibliographies *
       ATTIC; Hazardous Waste Collection *
       Treatment Vendor Directory (planned) *
       Market Assessment (planned) *
       Program Exhibit for Major National/International Conferences
       Innovative Treatment Technologies: Semi-Annual Status Report

    Technical
       SITE Program *
       START Program
       Bioremediation Field Initiative
       Treatability Study Initiative*
       Engineering Forums
       Other ORD Programs
       -  Small Business Innovative Research Grants
       -  Base Research Programs
       -  Hazardous Substance Research Centers
    * See appendices to this manual for further information on these items.
                                            1-4

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the use of new technologies and (2) to work closely with Agency and state staff, private parties,
and commercial vendors in implementing this strategy.

PURPOSE

       This document has been prepared by TIO for use in training sessions and seminars with
On Scene Coordinators (OSCs), Regional Project Managers (RPMs), and state project managers.
The document contains summary information on selected technologies to assist site managers in
their initial evaluation of innovative treatment technologies.  In this focussed effort, the material
was selected to provide information on a limited number of innovative treatment technologies
with particular emphasis on those technologies that are applicable to organic contamination.  It is
not intended or planned to be an exhaustive review of innovative treatment technologies nor is it
intended to be a complete reference on any one technology.

       This document is  primarily intended to provide site managers with a broad overview of
innovative treatment technologies and several categories of treatment have not been included.
Most notably, the manual does not provide information on technologies to immobilize
contaminants (solidification/stabilization) and flush contaminants from the soil in place (in situ
soil flushing).  Although  the focus of the document is source control, a chapter is included for
ground water remediation.  Based on comments from users of the document  and future
developments in technology, summaries of these and other technologies may be added in future
editions of the document.

       The document provides information on several types of technology organized into nine
categories of hazardous waste treatment, as follows:

1.     INCINERATION
              Rotary kiln
              Infrared
              Circulating fluidized bed
2.     THERMAL DESORPTION
              Directly heated desorbers
              Indirectly  heated desorbers
              In  situ steam extraction
3.     SOIL WASHING
4.     SOLVENT EXTRACTION
5.     DECHLORINATION
                                           1-5

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6.     BIOREMEDIATION
              Slurry phase bioremediation
              Contained solid phase bioremediation
              Land treatment
              In situ
7.     VACUUM EXTRACTION
8.     IN SITU VITRIFICATION
9.     GROUND WATER TREATMENT
              Pump and treat
              In situ treatment

       For each category of treatment, this document provides a brief description of the
physical, chemical,  and biological processes used by the technologies in that category.  Summaries
of the status, applications, strengths, and weaknesses of the technologies follow the descriptions.
Where the information is available, the document includes facts on the characteristics of the
waste or site that may affect the performance of the technology. Also included, where available,
are overview reference materials such as technical bulletins, journal articles, engineering
references, and a list and summary of Records of Decision (RODs) for sites where the technology
has been selected. The contacts who are listed as responsible for these sites are EPA, State, and
contractor personnel who have experience with issues related to the application of these
technologies at specific sites.

       The  innovative treatment technologies discussed in this guide  may be used with traditional
or other innovative technologies in treatment "trains." Technologies may be combined to separate
the contaminated material prior to further treatment or to address multiple contaminants within
the medium. Several innovative technologies provide separation or pre-processing prior to
detoxification of the hazardous constituents. Based on the RODs signed from 1982 to 1990, the
remedies selected at sites included combinations  of the innovative technologies described in this
guide. These sites are:
       Resolve, MA

       Pinette's Salvage Yard, ME
       Ewan Property, NJ
       Myers Property, NJ
       Wide Beach, NY

       American Creosote Works, FL
       Coleman Evans Wood,
          Preserving, FL
Thermal desorption followed by
dechlorination
Solvent extraction and incineration
Soil washing and solvent extraction
Dechlorination and soil washing
Thermal desorption followed by
dechlorination
Soil washing and bioremediation

Soil washing and bioremediation
                                             1-6

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       Cabot/Koppers, FL                 -      Soil washing and bioremediation
       Jadco Hughes, NC                  -      Vacuum extraction followed by in situ
                                                 flushing
       Moss American, WI                 -      Soil washing followed by bioremediation
       Sand Creek, CO                    -      Soil washing followed by incineration

DEFINITIONS

       In reading this manual, it will be helpful to understand several key terms.  The phrase
"alternative  technology" was originally derived from the concept of an alternative to land disposal
for hazardous source material (i.e., soil, sludge, and solid waste, as opposed to ground water).
Treatment technologies, in general, utilize chemical, biological, or physical processes that reduce
the toxicity, mobility, or volume of wastes. Exhibit 4 shows mechanisms used in many of the
technologies discussed in this document.

       Although official definitions  do not exist to distinguish among different stages of
development status for alternative treatment technologies, the following functional definitions are
generally accepted:

       •      Available (or Existing) Technology.  A technology, such as rotary kiln
              incineration and conventional solidification/stabilization, that is fully proven  in
              routine commercial use and for which sufficient performance and cost information
              are available.
       •      Innovative Technology.  A treatment technology for which cost or performance
              information is incomplete,  thus hindering routine use at hazardous waste sites. An
              innovative technology may require additional full-scale field testing before it is
              considered proven and ready for commercialization and routine use.
       •      Emerging Technology. Those  technologies that require additional laboratory or
              pilot-scale testing to document the technical viability of the process.

Although this document is entitled "Innovative Treatment Technologies,"  the technologies
discussed may fall into any of these development stages. However, the focus of this document is
technologies which have at least been chosen for remediation.  Examples  of treatment
technologies that fall into these groups are included in Exhibit 5. Exhibit 6 shows examples  of
the types of terms used in RODs grouped  according to  the technology being applied.
                                            1-7

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1.4
EXHIBIT 4 - TREATMENT TECHNOLOGIES FOR CONTAMINATED SOILS
  Treatment Technologies for Contaminated Soils
      Ex Situ
                         Destruction/ _
                         Detoxification
                         Separation/
                         Recovery
                         Immobilization
                                   Incineration
                                   Dechlori nation
                                   Biroremedation
                                   Thermal Desorption
                                   Soil Washing
                                   Solvent Extraction
                                   SoUdiflcaNon/Stabilization
       In Situ
                         Destruction
               Separation
                         Immobilization—
Bioremediation
Vitrification

Vacuum Extraction
Steam Extraction
In situ Soil Rushing

Solidification/Stabilization
Vitrification
                                1-8

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1.5
    EXHIBIT 5 - STATUS OF SELECTED TECHNOLOGIES - SUPERFUND

    SOILS
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   1.6
EXHIBIT 6 - TREATMENT TECHNOLOGY GROUPINGS
                There are several terms that are used in practice to refer to the same
         technology for source control. The following is a list of terms that have been used
         primarily in RODs to describe source control technologies. The list is an attempt
         to classify these technologies and provide cursory information on their status.  (A)
         indicates "Available Technologies."  (I) indicates "Innovative Technologies."
1   On-/Off-site Incineration  (A)

      Rotary Kiln
      Cement Kiln
                                      6   In Situ Soil Flushing  (I)
                                      7   Soil Washing  (I)
2   Innovative Thermal Destruction  (I)

      In Situ Vitrification
      Infrared Incineration
3   Immobilization  (A)

      Solidification
      Stabilization
      Solidification & Stabilization
      Fixation
                                      8   Chemical Extraction  (I)

                                            Critical Fluid Extraction
                                            Solvent Extraction
                                            Hydrometallurgical Treatment
                                            Chemical Extraction
                                      9   Chemical Destruction  (I)

                                            Chemical Dechlorination
                                            KPEG Dechlorination
4   Vacuum Extraction  (I)

      Soil Venting
      Vacuum Extraction
      Vapor Extraction
      Vacuum/Vapor Extraction
      In situ Volatilization
5   Bioremediation   (I)

      In Situ Bioremediation
      In Situ Lagoon Bioremediation
      Slurry-Phase Bioremediation
        (Tank Bioremediation)
      Solid Phase Bioremediation - Land Farming
      Solid Phase Bioremediation - Land Application
      Solid Phase Bioremediation - Land Treatment
      On-site Bioremediation - Type Not Specified
      Bioremediation (Not Otherwise Specified)
                                      10  Thermal Desorption  (I)

                                            Enhanced Volatilization
                                            Low Temperature Thermal Treatment
                                            Thermal Aeration
                                            Thermally Enhanced Volatilization
                                            Low Temperature Thermal Stripping
                                            Low Temperature Vaporization
                                            Low Temperature Thermal Extraction
                                            Low Temperature Thermal Aeration
                                            Low Temperature Incineration
                                            Thermal Distillation
                                            In Situ Steam Stripping
                                            In Situ Hot Air Stripping

                                      11  Other/Not Specified Treatment  (I)

                                            Soil Aeration
                                            Chemical Neutralization
                                              1-10

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       The information in this manual was gathered from several sources and is intended to give
its readers a broad overview of select technologies that may be applied at hazardous waste sites.
The manual is designed for frequent updating to provide information which is as current as
possible. The materials contained herein should be supplemented by further information-
gathering and treatability studies during the remedy selection process when these technologies are
being considered at a site.

       OSCs/RPMs need up-to-date information on innovative treatment technologies because of
the rapid developments in this field.  To ensure the most complete and up-to-date information is
used in the decision-making process, technology experts should be consulted during the process.
The document entitled, "Technical Support Services for Superfund Site Remediation, EPA/540-
8-90/01 1," included as an appendix to this guide (Exhibit 11.10) is a good starting point for
additional information.  Exhibit 11.12, "Selecting  Innovative Treatment Technologies: A
Practitioner's Guide," discusses other sources of information on innovative technologies.  The
paper highlights the following EPA reference guides to technical experts:

       Ground Water  Research:  Technical Assistance Directory EPA/600/9-89/048
       Environmental Protection Agency, Office of Research and Development:  Technical
       Assistance Directory CERI-88-84
       ORD Topical Directory EPA/600/9-86/006
       Technical Support Services for Superfund Site Remediation,  EPA/540/8-90/011, October
       1990.  (Exhibit 11.10 of this guide)

       A significant source of information in this document manual was the Innovative
Treatment Technologies:  Semi-Annual Status Report which  was first released by the Technology
Innovative Office (TIO) in January,  1991 and updated  in September. This report provides
information on National Priorities List (NPL) sites and emergency response sites where EPA has
selected or used innovative  treatment technologies. The information contained in the report
serves several purposes:  (1) to track the progress of innovative technology use; (2) to provide
market information to technology vendors; and (3) to facilitate communication among innovative
technology users.  This report will be updated and distributed biannually. In several sections of
this manual you will see tables excerpted from the September 1991 status report.  In Exhibit 7
and Section 11.13  there are  several summary  statistics and charts that have been derived from  the
contents of the status report to give an overall view of  the progress and status of innovative
treatment technologies.  To  get on the mailing list for future updates of this document call
Ms. Dana Mun of PRC,  at (703) 556-2783. To receive a copy of the most recent report, you may
call EPA/ORD Publication at  (513) 569-7562 and request document  number EPA/540/2-91/002.

                                           1-11

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       For further information on this guide or other TIO initiatives, call Mr. John Quander at
FTS/398-8845 or (703) 308-8845.
                                           1-12

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 1.7
EXHIBIT 7 - INNOVATIVE TREATMENT TECHNOLOGIES: SEMI-ANNUAL

STATUS REPORT-SUMMARY STATISTICS
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                             TABLE OF CONTENTS

Section                                                                      Page


2.0  INCINERATION 	  2-1

      2.1    TECHNOLOGY DESCRIPTION	  2-1

            2.1.1   Rotary Kiln  	  2-2
            2.1.2   Infrared  	  2-2
            2.1.3   Circulating Fluidized Bed  	  2-2

      2.2    TECHNOLOGY STATUS	  2-3

      2.3    APPLICATIONS  	  2-3

      2.4    TECHNOLOGY STRENGTHS	  2-3

      2.5    TECHNOLOGY LIMITATIONS	  2-3

      2.6    POTENTIAL MATERIALS HANDLING REQUIREMENTS	  2-4

      2.7    WASTE CHARACTERISTICS AFFECTING PERFORMANCE  	  2-4

      2.8    EXHIBIT 1 - COMPARATIVE ANALYSIS OF INCINERATION
            TECHNOLOGIES  	  2-5

      2.9    EXHIBIT 2 - WASTE CHARACTERISTIC TABLES	  2-6

      2.10   EXHIBIT 3 - BOILING POINTS OF SELECTED COMPOUNDS	  2-10

      2.11   EXHIBIT 4 - FACT SHEET: INCINERATION OF HAZARDOUS
            WASTE 	  2-12

      2.12   EXHIBIT 5 - 1990 THERMAL  REMEDIATION  INDUSTRY
            CONTRACTOR SURVEY  	  2-16

      2.13   EXHIBIT 6 - ENGINEERING BULLETIN MOBILE/TRANSPORTABLE
            INCINERATION TREATMENT	  2-21

      2.14   KEY REFERENCE  LIST - INCINERATION  	  2-28

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                                   2.0   INCINERATION
2.1
TECHNOLOGY DESCRIPTION
       Incineration uses high temperatures ranging from 1600 to 2200T (871 to 1204°C) to
volatize and combust (e.g., in the presence of oxygen) organic constituents in hazardous wastes.
Three common incinerator designs are rotary kilns, infrared furnaces, and circulating fluidized
bed incinerators.  The destruction and removal efficiency (DRE) for properly operated
incinerators often exceeds the 99.99 percent requirement for hazardous waste.  All of these
designs can be operated to meet the 99.9999 percent requirement for PCBs and dioxins.
Incinerators usually have  primary and secondary combustion units to reach this efficiency.
   Solids and liquids
   containing organics
   Heat<16000F-2200°F>
                     Incineration
Treated residuals
Water from Air Pollution
Control Equipment
Treated offgases
Recovered partlculates
                             • Rotary kiln
                             > Infrared
                             1 Circulating fluidized bed
                             •Others
                                           2-1

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2.1.1          Rotary Kiln

       Rotary kiln incinerators are slightly inclined, refractory-lined cylinders used for the
controlled combustion of organic wastes under net oxidizing conditions (i.e., the final oxygen
concentration is significantly greater than zero.)

       Wastes and auxiliary fuel are injected into the high end of the kiln and passed though the
combustion zone as the kiln slowly rotates. Rotation of the combustion chamber creates
turbulence and improves the degree of burnout of the solids.  Retention time can vary from
minutes to an hour or more.  Wastes are oxidized to gases and inert ash. Ash is removed at the
lower end of the kiln and flue gases are passed  through a secondary combustion  zone and then
through air pollution control units.

       Residuals generated from the process include: (1) ash, (2) stack gases, and (3) brine
solution for the ash quench and wet scrubber.

2.1.2          Infrared

       Infrared thermal units use silicon carbide elements to generate thermal radiation beyond
the red end of the  visible spectrum.  Materials to be treated pass through the treatment unit on a
conveyer belt; off  gases are passed to a secondary chamber for additional thermal treatment.

       Residuals from an infrared system are the same as from a rotary kiln - ash, stack gases,
and scrubber water.

2.1.3          Circulating Fluldized Bed

       The fluidized bed incinerator consists of a refractory-lined vessel containing a bed of
inert, granular, sand-like material.  Combustion air is forced upward through the bed thereby
suspending the material.  Fluidized beds can be operated at lower temperatures than other
incinerators because  of the high  mixing energies aiding combustion.  Fluidized beds also make
use of limestone for  the capture  of acid gases, thus  eliminating the need for wet scrubbers and
one of the residual streams from the process.
                                            2-2

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2.2           TECHNOLOGY STATUS
                     A recent survey of the thermal incineration industry shows
                     14 active mobile cleanup vendors (nine rotary kilns, four
                     infrared furnaces, and one circulating fluidized bed).

                     Through FY 90, 55 RODs approved off-site incineration and 59 approved
                     on-site incineration.

                     There is limited capacity for off-site incineration of soils.

                     Rotary kiln, infrared, and circulating fluidized bed incinerators have been
                     successfully demonstrated and used in full scale remediation.
2.3           APPLICATIONS
              •      Incineration is effective in treating soils, sediments, sludges, liquids, and
                     gases.

              •      Incineration is used to treat all concentrations of organic constituents.  It
                     becomes more competitive when high concentrations are present and other
                     treatments are not possible.


2.4    TECHNOLOGY STRENGTHS


              •      Incineration usually destroys organic contaminants in the residual soils
                     with an efficiency of greater than 99.9  percent.

              •      The treatment concentrates non-volatile metal constituents in residues.

              •      It may accomplish some volume reduction of soils depending on the ash
                     content.


2.5           TECHNOLOGY LIMITATIONS


              •      Incineration is relatively expensive compared to other technologies.

              •      Public resistance has been high.

              •      Volatile metals, including  lead and arsenic, leave the combustion unit with
                     the flue gases and may have to be removed to avoid excessive emissions.
                     (See Exhibit 3).  Metals can react with other elements in the feed stream
                     such as chlorine or sulfur, forming more volatile and toxic compounds than
                     the original species.

              •      Sodium and potassium in the wastes can attack the brick lining of the
                     thermal unit (refractory attack) and form a sticky paniculate which fouls
                     heat transfer surfaces.
                                            2-3

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                     Acid gases must be removed when wastes are combusted which contain
                     halogenated,  sulfonated, nitrated or phosphorus compounds.
2.6           POTENTIAL MATERIALS HANDLING REQUIREMENTS
                     Excavation is required.

                     Dewatering may be necessary to achieve acceptable soil moisture content.
                     (The cost of incineration increases as the moisture content increases. In
                     addition, infrared treatment units require more than 22 percent solids to
                     ensure proper conveyance.)

                     The material must be screened to  remove oversized particles.

                     Size reduction may be needed to achieve the feed size required by the
                     equipment.

                           The rotary kiln has the least stringent requirement (can accept
                           debris up to 12 inches in diameter.)

                           Fluidized bed units and infrared units require the waste material to
                           be less than 1  to 2 inches in  diameter.

                     The waste material may require mixing to achieve uniform feed size and
                     moisture content and  to dilute troublesome components.

                     If the wastes contain a high concentration of clays and fine particles,
                     separation of clays and fines will  minimize dust emissions and particulate
                     loadings to the air-pollution control equipment (rotary kiln and fluidized
                     bed).
2.7           WASTE CHARACTERISTICS AFFECTING PERFORMANCE


              •      See table on attached page.
                                           2-4

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2.9
EXHIBIT 2 - WASTE CHARACTERISTIC TABLES
Waste Type:  Soils and Sludges
Technology:  High-Temperature Thermal Treatment - General"
    Characteristics
  Impacting Process
      Feasibility
                  Reason for Potential Impact
        Data
     Collection
    Requirements
High moisture content
Elevated levels of
halogenated organic
compounds
Presence of PCBs,
dioxins
Presence of metals
Elevated levels of
organic phosphorous
compounds
            Moisture content affects handling and
            feeding and has major impact on process
            energy requirement.

            Halogens form HC1, HBr, or HF when
            thermally treated; acid gases may attack
            refractory material and/or impact air
            emissions.

            PCBs and dioxins are required to be
            incinerated at higher temperatures and
            long residence times. Thermal systems
            may require special permits for
            incineration of these wastes.

            Metals (either pure or as oxides,
            hydroxides, or salts) that volatilize below
            2,000°F (l,093eC) (e.g., As,  Hg, Pb, Sn.)
            may vaporize during incineration.  These
            emissions are difficult to remove using
            conventional air pollution control equip-
            ment. Furthermore, elements cannot be
            broken down to nonhazardous substances
            by any treatment method. Therefore,
            thermal treatment is not useful for soils
            with heavy metals as the primary con-
            taminant.  Additionally, an  element such
            as trivalent chromium (Cr+3) can be
            oxidized to a more toxic valence state,
            hexavalent chromium (Cr+6), in combus-
            tion systems  with oxidizing  atmospheres.

            During combustion processes, organic
            phosphorous compounds may  form
            phosphoric acid anhydride (P20S), which
            contributes to refractory attack and
            slagging problems.
Analysis for percent
moisture
Quantitative analysis
for organic Cl, Br,
and F
Analysis for priority
pollutant.
Analysis for heavy
metals
Analysis for
phosphorus
  Applicable to fluidized bed, infrared, rotary kiln, wet air oxidation, and pyrolytic as well as
  vitrification processes.

Source:  Technology Screening Guide for Treatment of Soils and Sludges EPA/540/2-88/004
         (1988)
                                      2-6

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2.9
EXHIBIT 2 - WASTE CHARACTERISTIC TABLES (continued)
Waste Type: Soils and Sludges
Technology: Rotary Kiln Incineration
    Characteristics
  Impacting Process
      Feasibility
                  Reason for Potential Impact
        Data
      Collection
    Requirements
Oversized debris such
as large rocks, tree
roots, and steel drums
Volatile metals (Hg,
Pb, Cd, Zn, Ag, Sn)
Alkali metal salts,
particularly sodium
and potassium sulfate
(NaSO«, KSO4)

Fine particle size of
soil feeds such as clay,
silts

Spherical or
cylindrical wastes

Ash fusion
temperature of waste
Heating value of
waste
            Difficult to handle and feed; may cause
            refractory loss through abrasion. Size
            reduction equipment such as shredders
            must be provided to reduce solid particle
            size.

            May result in high metals concentration
            in flue gas, thus requiring further
            treatment.

            Cause refractory attack and slagging at
            high temperatures. Slagging can impede
            solids removal from the kiln.
            Results in high paniculate loading in flue
            gases due to the turbulence in the rotary
            kiln.

            Such wastes may roll through the kiln
            before complete combustion can occur.

            Operation of the kiln at or near the waste
            ash fusion temperature can cause melting
            and agglomeration of inorganic  salts.

            Auxiliary fuel is normally required to
            incinerate wastes with a heating value of
            less than 8,000 Btu.
Size, form, quantity
of oversized debris.
Size reduction
engineering data
Soil and stack gas
analysis for subject
metals

Percent Na, K.
Soil particle size
distribution, USGS"*
soil classification

Physical inspection of
the waste

Ash fusion
temperature
Btu content
    U.S. Geological Survey.

Source: Technology Screening Guide for Treatment of Soils and Sludges EPA/540/2-88/004
        (1988)
                                      2-7

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 2.9
EXHIBIT 2 - WASTE CHARACTERISTIC TABLES (continued)
Waste Type:  Soils and Sludges
Technology:  Fluidized Bed Incineration
   Characteristics
  Impacting Process
      Feasibility
                  Reason for Potential Impact
        Data
     Collection
    Requirements
Feed particle size
Low-melting point
(less than 1600°F)
constituents,
particularly alkali
metal salts and
halogens (e.g., Na, Cl
compounds)
Ash content
Waste density
Presence of
chlorinated or
sulfonated wastes
            Large particle size affects feeding and
            removal of solids from the bed.  Solids
            greater than 1 inch (2.5 cm) must be
            reduced in size by shredding, crushing, or
            grinding.  (Note:  Waste-Tech fluid bed
            systems can handle up  to 3-in feed.) Fine
            particles (clays, silts) result in high
            paniculate loading in flue gases.

            Defluidization of the bed may occur at
            high temperatures  when particles begin to
            melt and become sticky.  Melting point
            reduction (eutectics) may also occur.
            Alkali metal salts greater than 5% (dry
            weight) and halogen greater than 8% (dry
            weight) contribute to such refractory
            attack, defluidization, and slagging
            problems.

            Ash contents  greater than 64% can foul
            the bed.  (Note:  Waste-Tech's continuous
            bed letdown,  screening, and reinjection
            minimize  this type of problem.)

            As waste density increases significantly,
            particle size must be decreased  for
            intimate mixing and heat transfer to
            occur.

            These wastes  require the addition of
            sorbents such as lime or sodium carbonate
            into the bed to absorb acidic gases or the
            addition of a flue gas scrubbing system as
            part of the treatment train.
Size, form, quantity
of solid material; size
reduction engineering
data; soil particle size
distribution; USGS
soil classification
Ash fusion
temperature
Ash content
Waste-bed density
comparison
Analysis for priority
pollutants
Source:  Technology Screening Guide for Treatment of Soils and Sludges EPA/540/2-88/004
         (1988)
                                       2-8

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2.9
EXHIBIT 2 - WASTE CHARACTERISTIC TABLES (continued)
Waste Type:  Soils and Sludges
Technology:  Infrared Thermal Treatment
   Characteristics
  Impacting Process
      Feasibility
                  Reason for Potential Impact
        Data
     Collection
    Requirements
Nonhomogeneous feed
size
Moisture content
            Nonuniform feed size requires
            pretreatment before feeding and
            conveyance through the system.  The
            largest solid particle size processible is 1
            to 2 inches.  Debris such as rocks, roots,
            and containers must be crushed or
            shredded to allow for feeding.

            Since waste material is conveyed through
            the system on a metal conveyor belt, soils
            and sludges must be firm enough (usually
            > 22% solids) to allow for proper
            conveyance.  Soils and sludges with excess
            water content (e.g., lagoon sediments)
            require  dewatering prior to feeding.
Size, form, quantity
of solid material; size
reduction engineering
data
Moisture analysis
Source:  Technology Screening Guide for Treatment of Soils and Sludges EPA/540/2-88/004
        (1988)
                                      2-9

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2.10          EXHIBIT 3 - BOILING POINTS OF SELECTED COMPOUNDS

                                                          Boiling Point
       Chemical Name                                 *F	CO

Bed,                                               7,052           (3,900)
Uranium and Compounds                            6,904"          (3,818)
Iron                                                4,9828          (2,750)
Fed,                                               1,238             (670)
FeCl,                                                 599             (315)
Nickel                                              4,949a          (2,732)
Chromium                                          4,842"          (2,672)
Cr02Cl,                                              243'            (117)
Chromium, hexavalent                               4,500           (2,482)
Copper                                             4,653"          (2,567)
CuCl                                               2,491            (1,366)
CuCl2                                               1,819"            (993)
Manganese and Compounds                          3,564*          (1,962)
Lead(Pb)                                           3,171"          (1,744)
PbCL                                               1,742             (950)
Barium                                             2,084           (1,140)
BaO                                                3,632           (2,000)
Zinc                                                1,665"            (907)
ZnO,                                               3,272           (1,800)
ZnCF,                                               1,350             (732)
Cadmium                                           1,409"            (765)
CdO                                          1,652-1,832       (900-1,000)
CdCL                                               1,760             (960)
SnCl,                                               1,153             (623)
Arsenic                                             1,135"            (613)
As,O,                                                 379             (193)
2,J,73-dioxin                                  932-1,500°        (500-800)
Mercury                                              675             (357)
HgCl                                                 575             (302)
Phenanthrene                                          644             (340)
SeO2                                                 603             (317)
Pentachlorophenol                                     588             (309)
Fluorene                                              559             (293)
Lindane                                              550             (288)
Polychlorinated  biphenyls                              512+           (267+)
Pyrene                                               500             (260)
DDT                                                 500             (260)
Methanol                                             360             (182)
Styrene                                               293             (145)
Xylene                                               280             (138)
Ethylbenzene                                          277             (136)

Note:   The boiling points of metals and metal compounds are of concern in the design of hazardous waste incinerators.
       Temperatures in the primary chamber of these incinerators may exceed 1800 * F, and the secondary combustion
       chamber often exceeds 2200* F. At these temperatures many of the metals and metallic compounds listed above
       will exist in the gas phase. Capture of the gaseous forms of these compounds requires expensive modifications to
       the air pollution control systems.
"      Boiling point is for the pure chemical itself and may not reflect that for the various compounds.
*      Sublimates.
e      Decomposes.
                                            2-10

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2.10          EXHIBIT 3 - BOILING POINTS OF SELECTED COMPOUNDS (Continued)


                                                        Boiling Point
       Chemical Name                               °F	CO

Chlorobenzene                                      270             (132)
Tetrachloroethane                               264-295         (129-146)
1,1,2,2-tetrachloroethane                            295             (146)
Tetrachloroethene                                   250             (121)
1,1,2-trichloroethane                                235             (113)
Toluene                                            232             (111)
Trichloroethylene (TCE)                             189              (87)
1,2-dichloroethane                                  183              (84)
Methyl ethyl ketone                                 176              (80)
Benzene                                            176              (80)
Carbon tetrachloride                                 171              (77)
1,1,1-trichloroethane                                165              (74)
Chloroform                                         142              (61)
Cis-l,2-dichloroethylene                            140              (60)
1,1-dichloroethane                                  135              (57)
Acetone                                            133              (56)
1,2-trans-dichloroethylene                           118              (48)
Methylene chloride                                  106              (41)
1,1-dichloroethene                                   90              (32)
Cyanides (for HCN)                                  80              (27)
Naphthalene                                         70              (21)
Vinyl chloride                                        7           (-13.9)
                                          2-11

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  2.11
EXHIBIT 4 - FACT SHEET: INCINERATION OF HAZARDOUS WASTE
United States
Environmental
Protection Agency
              Office of Waste Programs
              Enforcement
              Washington, D.C. 20460
             Winter 1987
             S/AT/87-2
 FACT SHEET:
 Incineration  Of
 Hazardous Waste
                                                    EPA
Introduction

   Hazardous waste is produced
as a result of current manufactur-
ing processes that supply prod-
ucts we use daily,  from food,
clothing, and shelter to recrea-
tion and  health  care products.
Hazardous waste is often a result
of mixing chemical compounds
that are produced and shipped by
a number of separate industries.
A  national survey conducted by
the  Environmental  Protection
Agency (EPA) in  1986 estimated
that 247 million metric tons of haz-
ardous  waste are  managed in
regulated  facilities  nationwide
each year - roughly one ton per
every man, woman and  child in
the United States.  Dealing with
hazardous waste safely, then, is a
major responsibility that rests with
each of us.  Properly managing
such waste requires close coordi-
nation  among Federal agencies,
State and local government, pri-
vate industry, and the public.

   Until the  late 1970s, land dis-
posal  was  the   cheapest and,
thus, preferred means of dispos-
ing of hazardous  waste.  Experi-
ence at some landfills since that
time, however, has demonstrated
the potential for  serious health
and environmental impacts from
improper  land disposal.  Recog-
nizing this threat to human hearth
and the environment, Congress
revised the Resource Conserva-
tion and Recovery Act (RCRA)-
the law that regulates the han-
              dling of hazardous waste. Recent
              revisions to RCRA  discourage
              future land disposal of hazardous
              waste  by placing stringent limits
              on the types of wastes that  can
              be disposed of in this manner.

                 As a consequence, more  and
              more  hazardous  waste  pro-
              ducers, as well as operators  and
              owners of treatment and disposal
              facilities, are using methods other
              than  land  disposal  to  handle
              wastes. EPA also  is  seeking,
              where  appropriate, to use alter-
              natives to land disposal for deal-
              ing with  hazardous  substances
              from sites regulated under  the
              Comprehensive   Environmental
              Response,  Compensation   and
              Liability Act (CERCLA or Super-
              fund). CERCLA was reauthorized
              on October 17,  1986,  with  the
              enactment  of  the  Superfund
              Amendments   and   Reauthor-
              ization Act (SARA). EPA is hope-
              ful that many treatment tech-
              nologies  will  be demonstrated
              and available for full-scale use in
              the coming years.   The Super-
              fund Innovative Technology Eval-
              uation (SITE) program was estab-
              lished  to support such demon-
              strations.

                 Incineration is one of the avail-
              able alternative  technologies to
              treat many types of hazardous
              waste.  Incineration can destroy
              organic waste such as dioxins and
              polychlorinated  biphenyls (PCS).
Furthermore,  this  method  can
handle waste  in  many forms
including soils, drums of sludges
and solids, and liquids.  Some
types of incineration even  allow
for  recovery of energy or mate-
rials.

   Incineration has been used to
destroy hazardous  waste in the
U.S. and Europe for several dec-
ades.   EPA has  studied  and
tested  commercial  incinerators
and has conducted incineration
research for several years. Based
upon EPA's current knowledge,
well-operated incinerators safely
destroy hazardous wastes.  EPA
is continuing to study incineration
in an  effort to gather additional
data on how best  to incinerate
hazardous  waste  and minimize
the  potential for harmful emis-
sions.

What Is Hazardous Waste
Incineration And How Does
It Work?

  During hazardous waste inciner-
ation, the individual molecules of
many organic hazardous materials
are  efficiently broken down into
their basic atomic elements and
detoxified  using high tempera-
ture  heat  and flame (typically
1800°  F to 2500° F). These basic
elements   (hydrogen,  carbon,
chlorine, nitrogen, etc.)  are oxi-
dized  into safer and more stable
                                        2-12

-------
 materials such as water, carbon
 dioxide,  and  nitrogen   oxides.
 Some  inert  ash  or  residues,
 organic-free  partfculates,   and
 small  concentrations of  organic
 materials  remain.   How these
 remaining materials are captured
 is  discussed later  in  this  fact
 sheet.  Property done, high-tem-
 perature incineration is a safe, effi-
 cient,  odorless, and smokeless
 process that renders many of the
 most toxic organic wastes perm-
 anently harmless.

    Two major types of hazardous
 waste  incinerators  are   in  use
 today:  the liquid injection system,
 which is limited to burning liquid
 wastes, and the rotary kiln inciner-
 ator, which is used to bum soHds
 as well as liquids.  Other types of
 hazardous   waste  incinerators
 being used include the "fluidized
 bed incinerator and the "infrared
 incinerator.' The type of hazard-
 ous waste  incineration  chosen
 depends upon the kind of hazard-
 ous waste to be incinerated, its
 physical  state (e.g.,  liquid or
 solid),  and the way it is handled
 and stored prior to  incineration.
 Many  incinerators  in  operation
 today  combine these  types for
 more   effective   handling  and
 destruction.

 What Kinds of Hazardous
 Waste Can Be Incinerated?

    All hazardous wastes can be
 incinerated.   Incineration, how-
 ever, destroys only organic mate-
 rial (PCBs, dtoxins, etc.), not inor-
 ganic materials such as hydrochlo-
 ric acid, salts, and metals.  Wastes
that contain a mixture of materials
 including organic,  inorganic and
 metal waste may be  treated by
 incineration to  detoxify the  or-
ganic waste.

 Are Highly Toxic Wastes
 Destroyed by Incineration?

    A common misconception is
that the more toxic a chemical, the
 more difficult it is to bum.  While
 some chemicals are more easfly
 broken down through  incinera-
 tion than others, ease of thermal
 decomposition is not related to
 toxicity.   EPA  has determined
 through an extensive Incineration
 research and evaluation program
 that destruction of organic wastes
 occurs  irrespective  of  toxicity.
 This feature  is very  important
 because it means that chemicals
 ranging from pesticides to PCBs,
 benzene to dtoxin, aO break down
 under heat, provided that appro-
 priate conditions are met.
Where Are Hazardous
Waste Incinerators
Located?

    Hazardous waste incinerators
that are built and operated where
the hazardous wastes are gener-
ated  are caBed ottsjte  inciner-
ators.    They  are typically con-
structed near a chemical plant or
manufacturing site. On-site incin-
erators  also  can  be  built  at
Superfund sites if the amount of
waste that needs to be  inciner-
ated is large. In 1985 there were
235 on-site facilities that handled
90  percent  of the  hazardous
waste incinerated each year in the
Unled States.
     An off-site incinerator is also
referred to as a "commercial faci-
tty*  because  hazardous waste
shipped from a variety of gener-
ators is incinerated at a single facil-
ity. Currently, 16 commercial haz-
ardous waste incineration facilities
are  in use throughout the U.S.,
accounting   for   roughly   10
percent of the hazardous waste
incinerated.   Most commercial
facilities are currently operating at
or near fuH capacity. Because of
the  large amount  of wastes at
Superfund sites that can be incin-
erated,  commercial  incinerator
capacity will likely fall short of
needed  capacity   in  the  near
future.

   A useful innovation for destruc-
tion of hazardous waste  is the
mobile lor transportable) incinera-
tor.  These systems are hauled to
a  site on  flat bed trucks, then
assembled and  tested.   Mobile
incinerators  typically  have  a
smaller capacity than stationary,
on-site units.   Because  mobile
incinerators are  designed to be
moved, they  are usually smaller
than  most  stationary facilities.
Mobile incinerators are particularly
appropriate for Superfund  sites,
especially  when the  waste  at
those sites can be cleaned up in a
limied period of time.
    MOBILE INCINERATOR
                                               2-13

-------
 At What Rate Can An
 Incinerator Handle The
 Waste?

     The rate an incinerator can
 handle waste generally depends
 on the volume and type of hazard-
 ous waste to be  destroyed  and
 the specific conditions at a site.
 For example, hazardous wastes
 are typically  fed into the mobile
 rotary kiln incinerator at a  rate of
 10,000 pounds per hour for con-
 taminated   solids   and   7,000
 pounds per hour for liquids.  In a
 mobile  liquid injection  system,
 wastes typically can be  fed at
 1,500   gallons   (over   12,000
 pounds)  per hour. These  quan-
 tities can be compared to those of
 non-hazardous waste burned by
 many   municipal   incinerators,
 some of which handle 1,000 tons
 (2 million pounds) of waste per
 clay.

 Are All Hazardous Wastes
 Completely Destroyed
 During Incineration?

   No incinerator can destroy 100
 percent of  the hazardous waste.
 Minute  amounts  of  hazardous
 compounds are released into the
 air through the incinerator stack
 (chimney) or become mixed with
 the ash.  However, EPA requires
 that each incinerator achieve a sat-
 isfactory  performance  level. A
 standard of at least 99.99 percent
 has been set for destruction  and
 removal   of   hazardous   com-
pounds introduced  into  inciner-
ators.  For  PCBs  and  dioxins,
incinerators must demonstrate a
destruction  and  removal   effi-
ciency (ORE) of 99.9999 percent.
A 99.99 percent ORE means that
of   every  10,000  pounds  intro-
duced into  the incinerator,  at the
most, only one pound of  resid-
uals remain. For PCBs and dioxin
compounds, the higher ORE of
99.9999 percent means that one
pound of residuals  for every  mil-
lion  pounds introduced into  the
incinerator may remain. EPA has
tested incinerators and found that
they can meet or exceed these
standards if operated properly. In
addition,  EPA  believes  that,
based  on   current  knowledge,
these standards protect  human
health and the environment.

How Does EPA Know That
Performance Standards
Are Met?

    To ensure that an incinerator
can  operate  at  the  established
performance level, trial bums are
conducted.  Trial bums use sam-
ples  of  different  hazardous
wastes, such as paints, sludges,
or chemical  solvents,  that  are
expected to be burned in a partic-
ular incinerator.  The trial  bum is
designed to test the unit under
the most difficult conditions the
incinerator will experience during
normal  operations.  For each
batch of  mixed  waste,    EPA
selects up to six  of the most con-
centrated  and  most difficult-to-
incinerate compounds.  By dem-
onstrating that these compounds
are destroyed and removed to  a
99.99 percent performance level,
trial bums demonstrate the maxi-
mum performance of the incinera-
tor.  In addition, any time an incin-
erator is to bum a new waste con-
taining a more difficult-to-inciner-
ate compound than the test com-
pound, a sample of this waste is
testbumed to guarantee that it will
be  destroyed to 99.99   percent
efficiency. If it cannot be destroy-
ed to that efficiency, the waste
may not be burned at that  inciner-
ator.

   The results of the trial bum are
used to set the conditions under
which the incinerator must oper-
ate to ensure that it meets the per-
formance standard. EPA speci-
fies these conditions in the oper-
ating permit for each incinerator.
The permit outlines the maximum
allowable carbon monoxide  level
in the stack exhaust gas, the maxi-
mum  waste feed rate, the mini-
mum  combustion  temperature,
the appropriate indicator for com-
bustion gas velocity, allowable var-
iations in  incinerator system de-
sign  or   operating  procedures,
and other parameters necessary
to ensure  proper operation.  Haz-
ardous waste cannot be fed into
the incinerator unless the incinera-
tor is operating within these speci-
fied conditions. When conditions
deviate from  these  established
permit limits, the incinerator trig-
gers a waste feed cut-off system
thereby ensuring no  emission of
hazardous  waste  from   the
incinerator.

What Happens to the
Residuals Produced by
Incineration?

    Under EPA's incinerator regu-
lations, ash that is removed from
the incinerator (both at the bot-
tom of the unit and from the stack)
is always  assumed to be hazard-
ous and must be disposed of at a
RCRA-permitted facility. EPA may
be petitioned to "delist" the resi-
due to formally determine that it is
not a hazardous waste. If the resi-
due is determined (through chem-
ical analysis) to  be  non-hazard-
ous, it may  be disposed of in a
municipal  landfill.  In addition,
scrubber  water  must  meet the
Clean Water Act standards to pro-
tect public health and the environ-
ment before it  can be discharged
to a river, stream, or lake.

How Much Does
Incineration Cost?

   The cost of off-site, commercial
incineration varies widely.  Many
factors influence  costs, including
concentration  of the  hazardous
waste, its physical  state  (eg.,
liquid or solid),  its potential for
burning, the  manner in which it is
fed  into  the incinerator,  and
pretreatment requirements.  The
size and  characteristics  of the
incinerator also affect costs. The
use of mobile or on-srte  inciner-
ators can, in some cases,  reduce
the costs of treating  the  more
                                             2-14

-------
 dfficuK wastes.  More experience
 with  using mobile  and  on-stto
 fadtties tor Superfund deanup is
 needed, however,  to determine
 actual costs.

 Who Regulates Hazardous
 Waste Incineration
 Facilities?

    AO off-site and on-site hazard-
 ous waste incinerators are regu-
 lated by EPA or the appropriate
 State  government  acting under
 the authorization of  EPA. Inciner-
 ation is one of the final steps in
 the "cradle to  grave" regulatory
 management system created by
 Congress under the  RCRA legisla-
 tion. "Cradle to grave" means that
 from the point at which a hazard-
 ous waste  is generated to its ulti-
 mate destruction or disposal,  it
 must be managed and monitored
 to  ensure   protection of  human
 health and the environment.

     Under RCRA, aD incineration
 fadtties except those at  Super-
 fund sites must obtain a permit to
 operate. Although a permit is not
 required for on-site incineration at
 a Superfund site, EPA  complies
 with  the   substantive  require-
 ments of  RCRA,  including the
 technical requirements pertaining
 to permitting. If hazardous waste
 from a Superfund site is sent to
 an off-site incinerator, the inciner-
 ator must comply with all  RCRA
 requirements,  including  permit-
 ting.

    To receive a permit, owners
 and operators of incinerators are
 required to submit information on
 the design, operation, and future
 closure of the facility. They also
 must submit information on the
 financial   capability  to  cover
 closure of the facility and liability
 for bodily injury or property dam-
 age to third parties.  The informa-
 tion submitted by the permit appli-
cant must specify what analyses
will be  made of all hazardous
wastes  prior to  incineration to
 ensure that the wastes are suled
 to  the  technology.    Security
 measures, such as  installation of
 a fence around the facility and
 adequate surveillance,  also are
 required.   Further, owners and
 operators must develop and fol-
 low a written inspection schedule
 to assess the overall safety of the
 facility, and they must use trained
 facility personnel.   Owners and
 operators also must prepare an
 action plan for emergency  situ-
 ations  and ensure that emer-
 gency prevention  measures are
 taken.      Finally,   up-to-date
 recordkeeping  and reporting on
 the operation of the  facility are
 required

 Who Monitors the
 Incineration Process
 During a Superfund
 Response?

    During a Superfund response,
 EPA or the State will lead the tech-
 nical activity or monitor the act-
 ivities of the State or private party
 conducting the cleanup.  Private
 firms, however, will actually con-
 duct the  cleanup activity at the
 Superfund site.  If mobile or on-
 site incineration is the  chosen
 cleanup  option,  highly  trained
 incineration engineers from com-
 mercial incineration firms win oper-
 ate the incinerator system.  EPA
 or the State, as part of their moni-
 toring of contractor  performance,
 win monitor trial bums of the incin-
 eration process, and will inspect
 incinerators at least twice a year
 (as required by RCRA) to ensure
that safety and health practices
 are being followed and wastes are
being destroyed effectively.

How Can The Public
Participate in the Process?

  EPA provides several opportun-
ities for public participation when
initiating activities at a Superfund
site. In a report called the feasibil-
ity study, EPA or the State  must
describe the options that it is con-
sidering for dealing wth  hazard-
ous wastes at the site.  One of
these options may be incineration
either at the  site (mobDe or on-
site) or at a commercial facility
located offstte.   The public will
have a minimum of three weeks to
comment  on  treatment and dis-
posal options documented by the
feasbilty study.  EPA must con-
sider  and address  these pubDc
comments before   tt   decides
which  option to use. In addition,
EPA or the State generally will
hold public meetings and issue
status reports to keep the commu-
nity advised of site activities, site
conditions, and  opportunities to
participate in meetings.   For ad-
ditional information, a Superfund
Regional  contact  is  provided
below.
  SUPERFUND CONTACT:
                                              2-15

-------
 2.12
EXHIBIT 5 - 1990 THERMAL REMEDIATION INDUSTRY CONTRACTOR
SURVEY
                 1990 Thermal Remediation
                 Industry Contractor Survey
                           JamM J. Cudahy and William L Troxtor
                                  Focus Environmental. Inc.
                                    Knoxvllfc, Tenrwsa*e
The treatment of toil contaminated with orguic* and inorganics if
becoming a major industry in the United State* and Europe. The toil
cleanup biU for the United State* could run as high as $200 to $300 bHUon
over the next SO to 40 yean. European foO cleanup cost* could run MI high
at S130 billion,1
  The types of sites in the United State* that wHtrecjuire toil treatment can
be broken down into the following categories

   CERCLA (Superfund) Actions
   RCRA Corrective Actions
   RCRA datura

   Underground Storage Taott
   Real Estate Transfer*
   Spill deaorups.

(Continued on out p«(t).
                                                 The term* mobile uid transportable
                                                an often used interchangeably, howev-
                                                er, thii is often misleading. For pur-
                                                poaee of thif paper, • mobile thermal
                                                treatment lyitem it defined u a truck,
                                                rail, barge,  or skid-mounted lyswm
                                                which can be field erected in two weeks
                                                or lew and  requiree miniitial founda-
                                                tions. A traruportablt thermal treat-
                                                ment system is defined as a truck-,
                                                rail-, barfe- or skid-mounted system
                                                which requires more than two weeks
                                                for field erection and requiree the con-
                                                struction of  substantial foundations.
                                                 The following types of mobile and
                                                transportable thermal remediation
                                                Coprnffet 1NO—Air * WMW Mm
                                                                    J. Air Wast* Manage Aaaoc.
    Reprinted with permission frcm the J.  Air Waste Manage. Assoc.
                                         2-16

-------
                  **, in each of the* categoric*, with the ezcepaanaf the
                  er category, - •** <*ven by differ** set, of Federal
             Real Estate Transfer type regulations were ifirst urttuted m
            and have now been promulgated inanumberof other, tate*.
                        co« for the Superfund
       . Estimated costs for the industrial sector Superfund are $25 to SM
 billion and the estimated cost for the Department of Energy sites U over
 $150 billion.1 An early RCRA Corrective Action cleanup estimate u $25
 billion.' ThiM estimate may well be low, however, liace the permitting,
 cleanup and delating criteria are, till not clearly defined. The If A', RCRA
 Corrective Action cost estimate it $7.4 billion. However, the Office of
 Management and Budget feels that this estimate a low*
   The potential magnitude of the cleanup coto has resulted in the
 development and implementation of many technologies for the
 decontamination of soils. Of the available remedo/ tecboologiet, thermml
 treatment bu perhtpi had the mott field letting. The purpo* ofthu pmper
 it to focut on the full ttxle lite remedatiom which have been or are being
 conducted uting thermal procetting equipment. Projectt which btve been
 completed, mre on-going, or hmve been contracted for, through Jmnuary of
 1990 are described.
                                      mediation project* detailed ia tiu« pa-
                                      per are all full-tcale commercial clean-
                                      up* in the United State* which are ei-
                                      ther completed, on-going, or have been
                                      contracted.  The  project information
                                      wai obtained by contacting  each of the
                                      thermal remediation tervice  contrac-
                                      tor* and aiking for the following infor-
                                      mation:
                                      *  Site name/location/tize  (ton*)
                                      •  Source of contamination
                                      •  Project itatut (finished, on-going,
                                         or contracted)
                                      •  Combustion equipment type  and
                                         capacity (MM Bto/hr)
                                      •  Air pollution control   equipment
                                         typ«
                                      •  Number of unit* u*ed by contrac-
                                         tor during the project
                                      e  Treated toil indicator compound
                                      •  Concentration  of  indicator com-
                                         pound in treated toil
 equipment are currently available for
 toil decontamination:
    Rotary kiln
    Circulating bed combuitor
    Infra-red conveyor furnace
    Aiphaltkiln
    Low temperature direct fired de-
    torber
 •   Low temperature indirect find de-
   •orber
 •  Hif h temperature indirect fired de-
   torber.
  The type* of system* lilted  above
have all been u»ed or are under con-
tract to  perform full-scale site  clean-
up*. Description* of theae syttem* can
be found in Reference* 5 through 8.
     Table I. Thermal remediation industry project summary.
Project statu*
Description
No. of project*
Waste quantity (tons)
Average site sue (tons)*
No. of contractors
No. of thermal units
Finished
31
340,000
11,000
On-coing
a
370,000
46,300
Contracted
15
565,000
37,700
Total
54
1,275,000
23.600
20
40
     * Averaf • includes only project* for which site sixe information is available.
Thermal Remediation Project*

  The project* described in this paper
do not include pilot scale work. A de-
scription of some of the early pilot scale
thermal treatment work can be found
Requirement for a trial burn
Paniculate emission* during trial
burn
RCRA or TSCA permitting re-
quirement*
in Reference* 5 and 8. The thermal re-    •  Biggest problem on project
T«bl« n.  Site date.
Vendor
AET
Canonie
Canonie
Canonie
Canonie
Chemical Waste Mgt.
Ensco
Enaco
Rnsrn
Ensco
Ensco
Ensco
GDC Engineering
Harmon
Harmon
Harmon
IT Corporation
Site name
Valde*
OttatiaiGoM
Canon Bridgewater
South Kaaray
McKia
Confidential
Union Carbide
Laos Oil
Sydney Mine*
NCBC
Bridgeport Rental
Smith villa
Rubicon
Bog Creek
Confidential
PreBUas Creosote
Motto
Site location
Valdes
Kingston
Bndgewater
South Kearny
Gray
Northeast
Saadrift
Lemont
Brandon
Gulfport
Bridgeport
Canada
Geiamar
HowellTwp.

Preatias
Lamaroue
ST
AK
NH
MA
NJ
MB

TX
IL
FL
MS
NJ

LA
NJ
AL
MS
TX
Source of contamination
Crude oil spill
Solvent treatment
Solvent recycling
Sol wot recycling
Waste treatment and disposal
PCB spills
Chemical manufacturing
Waste oil
Waste oil lagoon
Herbicide storage
Used oil recycling
PCB transformer leak*
ChtmK%l •w*f»if*'>*itv«M
Paint/solvent disposal
'"rsnrlirtt tank 'te.k
Wood treatment
Styrene tar disposal pita
Project
status
Finished
Finished
Contracted
Finished
Finished
Contracted
Contracted
Finished
Finished
Finished
Ongoing
Contracted
OnatuDS!
-*M»wiiie
Ongoing
Finished
Finished
Ongoing
Site sue
(tons)

8.000
6,500
18,000
18,000
35,000

26.000
10,000
22.000
100,000
7.000
52,000
22.500
eoo
9,200
80,000
(Continued on next page).
August 1990    Volume 40. No. 8
                                                   2-17

-------
 CONTROL  TECHNOLOGY
Tabl* U. SiU data (continued).
Vendor
IT Corporation
IT Corporilion

IT Corporation
Kimmins
Ogden
Ogden
Ogden
0. H. Material*
O. H. Material!
0. H. Material*
0. H. Materiala
0. H. Material!
0. H. Material!
0. H. Material!
Site Reel. System*
Site Red. System*
Site Red. System!
Soil Remediation Co.
SoUtech
TDI Service*
Thermodynamics Corp
U.S. Waite Thermal Proc.
U.S. Waste Thermal Proc
U.S. Waste Thermal Proc.
V«rtac Site Contractor*
Vesta
Vesta
Vesta
V«su
V«sta
W estinghouM/Haztech
W estinghouae/Haztech
Weston
We* ton
Weston
Weston
Weston
Sit* name
Cornhuaker AAP
Louisiana AAP
c;v-« pit*
3U.OT * It*
La Sail*
Confidential
Swanson River
Stockton
Goose Bay
Gas station
Rail yard
Twin City AAP
Rail yard
Florida Steel
Rail yard
Koch Chemical
Gulf Oil
Sun Oil
Multiple sitea
Waukegan Harbor
Chevron Refinery
S. Crop Service*
G** station
Confidential
Confidential
Vertac
Nyanza
Rocky Boy
S. Crop Service*
American Crosaarm
Fort A.P. Hill
Peak Oil
La Sail*
Revenue
Letterkenny Depot
Tinker AFB
Paxton Avenue
Lauder Salvag*
Sit* location
Grand Island
Miadcn
PrnnKv
^-iOBDj
LaSail*
Sacramento
Kenai
Stockton
Goose Bay
Cocoa

New Brighton

Indian town
Cleveland

Multiple lite*
Multiple site*
Multiple site*
Waukegan
ElSegundo
Oelray Beach
Temecula

SanBemadino
Jacksonville
Ashland
Havr*
Oelray Beach
Chehali*
Bowling Green
Tampa
LaSall*
Springfield
Chambers burg
Oklahoma City
Chicago
Beards town
ST
NE
LA
TX
IL
CA
AK
CA
Canada
FL
PA
MN
PA
FL
OH
KS
FL

SC
DL
CA
FL
CA
CA
CA
AR
MA
MT
FL
WA
VA
FL
O.
IL
PA
OK
IL
IL
Sourc* of contamination
Munition* plant redwatar pita
Munition* patet rerieXir lagoon

PCS capacitor manufacturing
Town gas sit*
Oil pipeline compressor oil
Underground tank oil leak
PCB*
Petroleum tank leak
Repetitive spill*
Munition* plant
Diesel tank spill
Steel mill used oil*
Refueling station
Tank bottom*
Oil spill*
Oil spill*
Gas and oil leaks/spills
Marine motor manufacturing
APIsludgM
Crop dusting operation
Petroleum tank leak
Oil spill*
Oil spill*
Chemical nianMfaT*11^"*'
Dye manufacturing
Wood treatment
Crop dusting operation
Wood treatment
Army base
Used oil recycling
Transformer reconditioning

Army depot
Air Fore* baa*
Waste lagoon
Metal scrap salvage
Project
status
Finished
Finished
C^nntrAft^A
WQUBCIiOTl
Contracted
Contracted
Ongoing
Ongoing
Ongoing
Finished
Finished
Finished
Finished
Finished
Finished
Contracted
Contracted
Contracted
Finished
Contracted
Contracted
Finished
Finished
Contracted
Finished
Contracted
Finished
Ongoing
Finished
Finished
finished
Finished
Finished
Finished
Finished
Finished
Ongoing
Finished
Site sue
(tons)
45.000
100.000
">ji /vyi
J4i,UUU
69,000
22.500
80,000
16.000
4.000
1.000
1.500
2,000
1,300
18,000
1,500
700
18.000

3,000
20.000
30,000
1.800
1.000
7,500
540
6,500
1,000
1.800
1.800
900
200
7.000
30,000
1.000
500
1.000
16.000
8.500
Table III.  Equipment data.
        Vendor
    Sit* name
No. of
unit*
Combustion equipment typ*
  Thermal
  capacity
(mm Btu/hr)
APC equipment typ*
AET
Canonie
Canome
Canonie
Canonie
Chemical Waste Mgt
Ensco
Ensco
Ensco
Ensco
Ensco
Ensco
GDC engineering
Harmon
Harmon
Harmon
IT Corporation
IT Corporation
IT Corporation
IT Corporation
Kimmina
Ogden
Ogden
Valdes              1
OttatiAGoes         1
Canon Bridgewatar    1
South Kearny        1
McKin              1
Confidential          1
Union Carbide        1
LensOU             1
Sydney Mine*        1
NCBC              1
Bridgeport Rental     I
Smithvill*           1
Rubicon             1
Bog Creek           1
Confidential          1
Prentia* Creosote     1
Moteo               2
Cornhusker AAP      1
Louisiana AAP        1
Sikee Pit*            2
LaSall*             1
Confidential          1
Swanson River        1
      Rotary kiln                          20
      Asphalt kiln                          55
      Asphalt kiln                          55
      Asphalt kiln                          55
      Asphalt kiln                          55
      High temperature indirect deeorber
      Rotary kiln                          35
      Rotary bin                          35
      RoUrykiln                          35
      Rotary kiln                          35
      Rotary kiln                         100
      Rotary kiln                          35
      Infrared conveyor furnace
      Rotary kiln                          82
      Low temperature direct desorber        21
      Rotary kiln                          82
      Rotary bin                          56
      Rotary kiln                          56
      Rotary kiln                          56
      Rotary kiln                          56
      Rotary kiln                         100
      Circulating fluid bed                  10
      Circulating fluid bed                  10
                                        Baghou**, carbon, scrubber
                                        Baghouae, carbon, scrubber
                                        Baghou**, carbon, scrubber
                                        Baghou**, carbon, scrubber
                                        Condensation, carbon
                                        Steam ejector scrubber
                                        Steam ejector scrubber
                                        Steam ejector scrubber
                                        Steam ejector scrubber
                                        Steam ejector scrubber
                                        Steam ejector scrubber
                                        Waterloo scrubber
                                        Cyclone, baghoua*. packed bed
                                        Baghou**
                                        Cyclone, baghouse, packed bed
                                        Hydroeonics undem scrubber
                                        Hydrceonic* tandem scrubber
                                        Hydroponics tandem scrubber
                                        Hydrceonic* tandani scrubber
                                        Baghou**, pecked bed
                                        Baghou**
                                        Baghouse
                                                     2-18
                                                                                           J. Air Wist* Manage. AMOC

-------
Table III.  Eqmpm«Dt d*t» (continued).
        Vendor
                            Site name
                                          No. of
                                           units
                            Combustion equipment type
                                 Thermal
                                 capacity
                                (mmBtu/hr)
    APCequipment type
Ofden
0. H. Material*
0. H. Material*
0. H. Material*
0. H. Material*
0. H. Materials
0. H. Mturwli
0. H. Materials
Site Reel Systems
Site Reel Systems
Site Red Systems
SoU Remediation Co.
Soil tech
TDI Service*
Thermodynamics Corp
U.S. Waite Thermal Proc.
U.S. Waete Thermal Proc.
U.S. Weste Thermal Proc.
Venae Site contractor*
Veeta
Veita
Veita
Veeta
Veeta
Westinfhouse/Haztech
WettinffhouM/Haztach
Weeton
Weston
Weiton
Wetton
Weeton
Stockton             1
GooteBay            1
Gat station           1
Railyard             1
TwintityAAP        1
Rail yard             1
Florida Steel          1
Railyard             1
Koch Chemical        1
Gulf Oil              1
Sun Oil               1
Multiple tite*         1
Weukefan Harbor     1
Chevron Refinery     1
S. Crop Service*       1
Ga* station           1
Confidential          1
Confidential
Vertac
Nyansa
Rocky Boy
S. Crop Service*
American Croeearm
Fort A.P. Hill
Peak Oil
LaSalle              1
Revenue             X
Lenerkenny Depot    1
Tinker AFB          1
Futon Avenue        1
Leuder Salvage	1
Circulating fluid bed                   10
Infrared conveyor furnace              30
Low temperature direct deeorbcr        12
Low temperature direct dnorber        20
Infrared conveyor furnace              30
Low temperature direct deeorber        20
Infrared conveyor furnace              30
Low temperature direct deeorber        20
Aiphaltkila                           47
Asphalt kiln                           25
Asphalt kiln                           28
Asphalt tin                           48
High temperature indirect deeorber      14
High temperature indirect deeorber
Roury kiln                            1
Infrared conveyor furnace              10
Infrared conveyor furnace              10
Infrared conveyor furnace              10
Rotary kiln                           35
Rotary kiln                            8
Rotary kiln                           12
Rotary kiln                           12
Rotary kiln                           12
Rotary kiln                           12
Infrared conveyor furnace              30
Infrared conveyor furnace              30
Low temperature indirect deeorber      12
Low temperature indirect deeorber      12
Low temperature indirect deeorber      12
Rotary kiln                           35
Rotary kiln                   	35
Bafhouee
Venturi. packed bed
Venturi
Cyclone, venturi
Venturi, packed bed
Cyclone, venturi
Venturi, packed bed
Cydone, vencun
Bcfhoute
Bafhouse
Baghouee
Cyclone, beghouse
Baghouse, cyclone, scrubber
Condensation, carbon
Wet scrubber
Caivert scrubber
Caivert scrubber
Caivert scrubber
Spray dryer, baghouse. scrubber
Wet scrubber
Wet scrubber
Wet scrubber
Wet scrubber
Wet scrubber
Wet scrubber
Wet scrubber
Bafhouse
Afterburner
Bafhouee, wet scrubber
Bafhouse, packed bed
Bafhouee. packed bed	
Vendor
AET
Canonie
Canonie
Canonie
Canonie
Chemical Waste Mgt
Ensco
Ensco
Ensco
Ensco
Ensco
Ensco
GDC Eafineerinf
Harmon
Harmon
Harmon
IT Corporation
IT Corporation
IT Corporation
IT Corporation
Kimmin*
Ofden
Ofden
Ofden
0. H. Material*
0. H. Material*
0. H. Material*
0. H. Material*
0. H. Material*
0. H. Material*
Site name
Valdes
OttatiAGoee
Canon Bridf ewatar
South Kearny
McKin
Confidential
Union Carbide
Lens Oil
Sydney Mines
NCBC
Bridfeport Rental
Smithvilk
Rubicon
Bof Creek
Confidential
PrentiM Creoeou
Motto
Cornhusker AAP
Louisiana AAP
SikeePit*
LaSalle
Confidential
Swanaon Rivet
Stockton
Goose Bay
Gas station
Railyard
Twin City AAP
Railyard
Florida Steel
Indicator compound
Petroleum hydrocarbon*
Volatile organic*
Total VOC
Volatile orfanics
Trichloroethylene
PCBe

Hydrocarbon*
Hydrocarbon*
Dioxin
PCB*
PCBe


Petroleum hydrocarbon*
PAH*
PCB*
Trinitrotoluene
Trinitrotoluene
Total PNA*
PCB*

PCB*
Total hydrocarbon*
PCB*
Rtnttn*) tolut nt lyttnt
Dieeeloil
PCBe
Dieeeloil
PCB*
Contaminant
concentration
in treated soil
(mf/kf)

<0.2
<0.1

<0.1
<2.0

<5.0
<5.0
<15PPT




<100
<2

<1J
<1.3
<100
<2.0

<0.1
<1

<0.1
<100
<2
<100
<2
Trial
bun
required

Ye*
No
No
Ye*

Ye*
Ye*
No
Ye*
Ye*
Ye*
Ye*
Yee
No
Ye*
Ye*
Ye*
Ye*
Ye*
Ye*

Ye*
Ye*
Ye*
Ye*

No

Ye*
Paniculate
emission*
(GR/DSCF
• 7%0,)

<0.03


<0.03


.006

.017



0.015

0.011

0.0017

.
Auguai 1990     VcXunw 40, No. 8
                                                        2-19

-------
CONTROL  TECHNOLOGY
Thermal RenMdaUon Industry
InfammUon

  Important  findings from  the con-
tractor survey an lummarized below;
•   In general, the major problem in
    the Thermal Remediation Industry
    has been material* handling for dif-
    ferent type*  of soils and complex
    waste*.
•   Modified  asphalt kiln*  are  being
    used  throughout the country aa
    fixed regional treatment centers for
    gasoline and oil contaminated soila
    from gasoline stations, under-
    ground storage tank cleanups, and
    oil spills. These units are typically
    permitted under air permits. Early
    asphalt Iriln  installations did not
    include secondary  combustion
    chambers. Recent  installations,
    however, are incorporating this de-
    sign feature.
•   Ensco, Vesta  and Harmon have in-
    stalled oxygen augmented burners
    on their rotary kilns. Ensco is using
    this technology at the Bridgeport
    site, Vesta in  Canada and Harmon
    at the Bog Creek site.
    Ogden Environmental Services has
    obtained approval from California
Summary

  Table  I presents a summary of the
current project status  of the thermal
remediation industry. Data in Table I
shows that at least 39 full-scale thermal
remediation projects have) been com-
pleted or are in progress by 15 contrac-
tors. The estimated quantity of materi-
al that has or will be processed during
these 39 projects it approximately
700,000 tons. There are an additional
15 contracted thermal remediation
projects which will process an estimat-
ed quantity of 565,000 tons of contami-
nated material The total of all projects
is close to 1,300,000 tons.
  Summaries of the contractor survey
information are included in  Tables  n
through IV. While these tables are con-
sidered to be a fairly complete compila-
tion  of the full-scale U.S. thermal re-
mediation  project* through  January
1990, it is possible that additional work
has been done which is not included.
  While the use of thermal equipment
to decontaminate soils is presently one
of the highest cost cleanup options, it
produces a soil with the lowest organic
residuals and therefore the least future
liability.  As the Land Ban Restrictions
require more types of waste to be treat-
ed and as cleanup  criteria become more
stringent, it is expected that thermal
remediation will be used more exten-
2. "Committee reports Federal Facility
   Bills  expanding EPA/state power* at
   wtate aitet," Environment Reporter
   Current Development*. August 19,1988,
    J. 683-
    . Stanley, "Hazardous Waata Manage-
   ment Industry-Growing Pains," Werth-
   eia Schroeder and Company, Inc. Publi-
   cation, New York. NY. April 7,1988.
4. "OMB suspends  review  of  three more
   EPA rubs, indicating impasa* in discus-
   aions  with agency,"  Environment  Re-
   porter Current Development*, June 23,
   1989, p. 466.
5. J. J. Cudahy, "Supeifund lit* remedia-
   tion with thermal treatment," paper pre-
   sented at Second  National Symposium
   on the Leading Edge of Incineration,
   Waahington, D.C., September 20,1987.
8. A. C.  Cnu, "Thermal Treatment, Hat-
   mat World, August 1989, pp. 50-56.
7. J. J. Cudahy, A. R. Eicher, "Thermal re-
   mediation industry; markets,  technol-
   ogies,  and companies," Pollut. Eng. 21:
   76(1989).
8. S. G.  Decicco, W. L. Trailer. "Mobil*
   thermal treatment ayitems," Chapter in
   Standard Handbook of Hazardoui
   Watte Treatment and Ditpotal,  Harry
   M. Freeman, Editor, first edition. New
   York.  McGraw-Hill Book Company, pp.
   8-179-*-194.
to operate its mobile circulating sludges.
bed combustor (CBC) as a fixed re-
gional thermal treatment facility
for oil contaminated soils. The
CBC will be kept at Stockton, Cali- R*J«ejr»nce*
fornia where it is currently reme- L £ John§on '-^^n $uri
dialing a site contaminated with rope'* underground woes,"
fueloiL 96:47(1989).
Table IV. Performance data (continued).
Vendor Site name
O. H. Material* Rail yard
Sit* Reel. System* Koch Chemical
Sit* Reel. Systems Gulf Oil
Sit* Reel Systems Sun Oil
Soil Remediation Co. Multiple sites
Soiltech W*uk*gan Harbor
TDI Service* Chevron Refinery
Thermodynamics Corp S. Crop Service*
U.S. Wast* Thermal Proc, Gas station
U.S. Wast* Thermal Proc. Confidential
U.S. Waate Thermal Proc. Confidential
Vertac Sit* Contractor! Vertac
Vest* Nyanz*
Veeta Rocky Boy
Vesta S. Crop Services
Vest* American Crotaarm
Vetta Fort A. P. Hill
Wettinghoue/Haztech Peak Oil
Westinghoue/Haztech La Sail*
Weston Revenue
Weston Letterkenny Depot
Weston Tinker AFB
Wetton Pazton Avenue
Wetton Lauder Salvage
Indicator compound
Petroleum hydrocarbon*
Toluene, sylen*
Benzene, toluene, xylene
Petroleum hydrocarbon*
PCB*
Pentachloropbefloi
Total hydrocarbons
Total hydrocarbon*
Total hydrocarbon
Dioxina
Nitrobenzene
Pentachlorophenol
DDT
Dioxin.
Dioxin
PCB*
PCB.
PAHs
Benzene, toluene, xylene
Trichloroethylen*
RCRA constituent*
PCBs
r*c* for Eu-
Chem. Eng.
Cont*min*nt
concentration
in treated toil
(mg/kg)
<50
<0.1
<50
BOAT
0.003
<10
<\0
<0.2
<0.001
<0.001
<1
<2
<0.33
<1
<2
The author* are with Focus Envi-
ronmental Inc., 9050 Executive Park
Drive, Suite A-202, KnoxviU*. TN
37923. This paper waa submitted for,
peer review on February 23, 1990.
The revised manuscript waa received
May 14, 1990.

ParticuUt*
Trial emissions
burn (GR/DSCF RCRA TSCA
required 0 7% 0?) pennit permit
Yes 0.039 No No
No No No
No No
Ye* No No
No No No
Ye* 0.035 No No
No 0.008 No No
No No No
No No No
Yes 
-------
 2.13
EXHIBIT 0 - ENGINEERING BULLE1IN MOBILE/ iKAINifUKi
INCINERATION TREATMENT
            United States
            Environmental Protection
            Agency
 &EPA
                                                       Office of Emergency and
                                                       Remedial Response
                                                       Washington, DC 20460
Office of
Research and Development
Cincinnati. OH 45268
                            Superfund
                                       EPA/540/2-90/014
September 1990
            Engineering Bulletin
            Mobile/Transportable
            Incineration  Treatment
 Purpose

    Section 121(b) of  the Comprehensive Environmental
 Response, Compensation, and Liability Act (CERCLA) mandates
 the Environmental Protection Agency (EPA) to select remedies
 that "utilize permanent solutions and alternative treatment
 technologies or resource recovery technologies to the maximum
 extent practicable" and  to prefer remedial actions in which
 treatment "permanently and significantly reduces the volume,
 toxicity, or mobility of hazardous substances, pollutants, and
 contaminants as a principal element" The Engineering Bulletins
 are a series of documents that summarize the latest information
 available on selected  treatment  and site remediation
 technologies and related issues.  They provide summaries of
 and references for the latest information to help remedial
 project managers, on-scene coordinators, contractors, and
 other site cleanup managers understand the type of data and
 site characteristics needed to evaluate a technology for potential
 applicability to their Superfund or other hazardous waste site.
 Those documents  that describe  individual  treatment
 technologies focus on remedial investigation scoping needs.
 Addenda will be issued  periodically to update the original
 bulletins.
Abstract

    Incineration treats organic contaminants in solids and
liquids by subjecting them to temperatures typically greater
than 1000'F in the presence of oxygen, which causes the
volatilization, combustion, and destruction of these compounds.
This bulletin describes mobile/transportable incineration systems
that can be moved to and subsequently removed from Superfund
and other hazardous waste sites.  It does not address other
thermal processes that operate at lower temperatures or those
that operate at very high temperatures, such as a plasma arc.
It is applicable to a wide range of organic wastes and is generally
not used in treating inorganics and metals. Mobile/transportable
incinerators exhibit essentially the  same environmental
performance as their stationary counterparts. To date, 49 of the
95 records of decision (RODs) designating thermal remedies at
Superfund sites have selected onsite incineration as an integral
part of a preferred treatment alternative.  There are  22
                                         commercial-scale units in operation [5]*. This bulletin provides
                                         information on the technology applicability, the types of residuals
                                         resulting from the use of the technology, the latest performance
                                         data, site  requirements, the status of the technology, and
                                         where to go for further information.
                                         Technology Applicability

                                             Mobile/transportable incineration has been shown to be
                                         effective  in treating  soils,  sediments,  sludges, and  liquids
                                         containing primarily organic contaminants such as halogenated
                                         and non halogenated volatiles and semivolatiles, porychlorinated
                                         biphenyls (PCBs), pesticides, dioxins/furans, organic cyanides,
                                         and organic corrosives.  The process  is applicable for the
                                         thermal  treatment of a wide range  of specific Resource
                                         Conservation  and  Recovery Act (RCRA) wastes and  other
                                         hazardous waste matrices that include pesticides and herbicides,
                                         spent halogenated  and nonhalogenated solvents, chlonnated
                                         phenol and chlorinated benzene manufacturing wastes, wood
                                         preservation and  wastewater sludge, organic chemicals
                                         production residues, pesticides production residues, explosives
                                         manufacturing wastes, petroleum refining wastes, coke industry
                                         wastes, and organic chemicals residues [1 ] [2] [4] [6 through 11 ]
                                         [13].

                                             Information on the physical and chemical characteristics of
                                         the waste matrix is  necessary to assess the matrix's impact on
                                         waste preparation, handling,  and feeding; incinerator type,
                                         performance, size,  and cost; air pollution control (ARC) type
                                         and size; and  residue handling.  Key physical parameters
                                         include waste matrix  physical  characteristics (type of matrix,
                                         physical form, handling properties, and particle size), moisture
                                         content, and heating  value. Key chemical parameters include
                                         the type and concentration of organic compounds including
                                         PCBs and dioxins,  inorganics (metals),  halogens, sulfur, and
                                         phosphorous.

                                            The effectiveness of mobile/transportable incineration on
                                         general contaminant  groups for various matrices is shown in
                                         Table 1 [7. p. 9]. Examples of constituents within contaminant
                                         groups are provided in Reference 7,  'Technology Screening
                                         Guide for Treatment of CERCLA Soils and Sludges." This table
• [reference number, page number)
                                                 2-21

-------
  EftocHvwwtt ol Incineration on General Contaminant
      Groups for SoU, Sediment. Sludge, and Uquld
Contaminant Croups



w
§
6





§
f
-

Keatllvt
Halogenated volatiles
Halogenated semivolatfles
Nonhalogenated volatiles
Nonhalogenated semivolatiles
PCBs
Pesticides (halogenated)
Dioxins/Furaru
Organic cyanides
Organic corrosives
Volatile metals
Nonvolatile metals
Asbestos
Radioactive materials
Inorganic corrosives
Inorganic cyanides
Oxidizers
Reducers
tell/
Sediment Sludge Uquld





T
•
¥
T
3
3
3
3
3
T
T
T







T
T
3
3
3
3
3
T
T
T







T
T
3
3
3
3
3
T
T
• Demonstrated Effectiveness: Successful treitabiliiy test at some scale
completed
T Potential Effectiveness: Expert opinion that technology wM work
3 No Expected Effectiveness: Expert opinion that technology wil not work
is  based  on current available information  or  professional
judgment when no information was available.  The proven
effectiveness of the technology for a particular site or waste
does not  ensure that it will be effective at all sites or that the
treatment efficiency achieved will be acceptable at other sites.
For the ratings used for this table, demonstrated effectiveness
means that, at some scale, treatability was tested to show that
the technology was effective for a particular contaminant and
matrix. The ratings of potential effectiveness or no expected
effectiveness are based upon expert judgment. Where potential
effectiveness is indicated, the technology is believed capable of
successfully treating the contaminant group in a  particular
matrix. When the technology is not applicable or will probably
not work for a particular combination of contaminant group
and matrix, a no-expected-effectiveness rating is given. Other
sources of general observations and average removal efficiencies
for different treatability groups are the Superfund LOR Guide
#6A,  "Obtaining a Soil  and Debris  Treatability Variance for
Remedial Actions," (OSWER Directive 9347.3-06FS  [13],  and
Superfund LDR  Guide  #68,  "Obtaining  a Soil and Debris
Treatability Variance for Removal Actions," (OSWER Directive
9347.3-07FS(14].
limitations

    Toxic metals such as arsenic, lead, mercury, cadmium, and
chromium arc not destroyed by combustion. As a result, some
will be present in  the ash while others are volatilized and
released into the flue gas [1, pp. 3-6).

    AJkali metals, such as sodium and potassium, can cause
severe refractory attack and form a sticky, low-melting-point
submicron paniculate, which causes APC problems. A low feed
stream concentration of sodium and potassium may be achieved
through feed stock  blending [1,pp. Mi].

    When PCBs and dioxins are present, higher temperatures
and longer residence times may be required to destroy them to
levels necessary to meet regulatory criteria [7, p. 34].

    Moisture/water content of waste materials can create the
need to co-incinerate these materials with higher BTU streams,
or to use auxiliary fuels.

    The heating value (BTU content) of the feed  material
affects feed  capacity and fuel usage of the incinerator.  In
general, as the heating value of the feed increases,  the feed
capacity and fuel usage of the incinerator will decrease.  Solid
materials with high calorific values also may cause transient
behaviors that further limit feed capacity [9, p. 4].

    The matrix characteristics  of  the waste  affect the
pretreatment required and the capacity of the incinerator and
can cause APC problems. Organic liquid wastes can be pumped
to and then atomized in the incinerator combustion chamber.
Aqueous liquids may be suitable for incineration if they contain
a substantial amount of organic matter. However, because of
the large energy demand for evaporation when treating large
volumes of aqueous liquids, pretreatment to dewater the waste
may be cost effective [1, pp. 3-14].  Also, if the organic content
is low, other methods of treatment may be more economical.
For the infrared incinerator, only solid and solid-like materials
within a specific size and moisture content range can be
processed because  of the unique conveyor belt feed system
within the unit

    Sandy soil is relatively easy to feed and generally requires
no special handling procedures. Clay, which may be in  large
clumps, may require size reduction. Rocky soils usually require
screening to remove oversize stones and boulders.  The solids
can then be fed by gravity, screw feeder, or ram-type feeder into
the incinerator.  Some types of solid waste may also require
crushing, grinding,  and/or shredding prior to incineration [1,
pp. 3-17].

    The form and structure of the wastefeed can cause periodic
jams in the feed and ash handling systems. Wooden pallets,
metal drum closure rings, drum shards, plastics, trash, clothing,
and mud can cause  blockages if poorly prepared. Muddy soils
can stick to waste  processing  equipment and  plug the feed
system [9, p.  8].
                                      Engineering Bulletin: Mobile/Transportable Incineration Treatment
                                                        2-22

-------
     The particle size distribution of the ash generated from the
 waste can affect the amount of paniculate carry-over from the
 combustion chamber to the rest of the system [9, p. 16].

     Incineration of halogens, such as  fluorine and chlorine,
 generates acid gases  that can affect the capacity, the water
 removal and  replacement rates that control total  dissolved
 solids in the process water system, and the paniculate emissions
 [9, p. l2]. The solutions used to neutralize these acid gases add
 to the cost of operating this technology.

     Organic phosphorous compounds form phosphorous pent-
 oxide, which attacks refractory material, causes slagging prob-
 lems and APC problems. Slagging can  be controlled by feed
 blending or operating  at lower temperatures [1, pp. 3-10].
 Technology Description
     Figure  1  is a  schematic  of the  mobile/transportable
 incineration process.

     Waste preparation (1) includes excavation and/or moving
 the waste to the site. Depending on the requirements of the
                                     incinerator type for soils and solids, various equipment is used
                                     to obtain the necessary feed size.   Blending  is sometimes
                                     required to achieve a uniform feed size and moisture content or
                                     to dilute troublesome components [1, pp. 3-19].

                                         The waste feed mechanism (2), which varies with the type
                                     of the incinerator, introduces the waste into the combustion
                                     system. The feed mechanism sets the requirements for waste
                                     preparation and is a potential source of problems in the actual
                                     operation of incinerators if not carefully designed [1, pp. 3-19].

                                         Different incinerator designs (3) use different mechanisms
                                     to obtain the temperature at which the furnace is operated, the
                                     time during which the combustible material is subject to that
                                     temperature, and the turbulence required to ensure that all the
                                     combustible material is exposed to oxygen to ensure complete
                                     combustion. Three common types of incineration systems for
                                     treating contaminated soils are rotary kiln, circulating fluidized
                                     bed, and infrared.

                                         The rotary kiln is a slightly inclined cylinder that routes on
                                     its horizontal axis. Waste is fed into the high end of the rotary
                                     kiln and  passes through the combustion chamber by gravity. A
                                     secondary combustion chamber (afterburner) further destroys
                                     unburned organic* in the flue gases [7, p. 40].
                                                      Figure 1
                                     Mobll*/Tronsportabl« Incineration Proc»u
                           Vapor
                          Control
    Waste
    Storage
  Waste
Preparation
    (D
                                      Waste
Waste
 Feed
 (2)
Incinerator
   (3)
                                                                                  Treated
                                                                                  Emissions

                                                                                  Stack
                                                                                  Emissions
Air Pollution
  Control
    (4)
                                                                            Ash
                                                                       Residue
                                                                      Handling
                                                                     Residue
                                                                    Handling
                                                                                                         Water
                                                                                                         Solids
                                                                                                         Treated
                                                                                                         Solids
Engineering Bulletin: Mobile/Transportable Incineration Treatment
                                                  2-23

-------
     Circulating fluidized bed incinerators use high air velocity
to circulate and suspend thefuel/waste particles in a combustor
loop. Flue gas  is separated from heavier particles in a solids
separation cyclone.  Grculating fluidized beds do not require
an afterburner [7, p. 35].

     Infrared processing systems use electrical resistance heating
elements  or indirect fuel-fired radiant U-tubes to generate
thermal radiation p, pp. 4-5]. Waste is fed into the combustion
chamber by a conveyor belt and exposed to the radiant heat
Exhaust gases pass through a secondary combustion chamber.

     Offgases from the incinerator  are treated by the APC
equipment to remove participates and capture and neutralize
acids (4).  Rotary kilns and infrared processing systems may
require both external paniculate control and acid gas scrubbing
systems. Grculating fluidized  beds do not require scrubbing
systems because limestone can be added directly into the
combustor loop but may require a system to remove particulars
[1, pp. 4-11 ] [2, p. 32]. APC equipment that can be used include
venturi  scrubbers, wet electrostatic precipitators, baghouses,
and  packed scrubbers.
Process Residuals

    Threemajorwastestreamsaregenera ted by this technology:
solids from the incinerator and APC system, water from the APC
system, and emissions from the incinerator.

    Ash and treated soil/solids from the incinerator combustion
chamber may be contaminated with heavy metals. APC system
solids,  such as fly ash,  may contain high concentrations of
volatile metals.  If these residues fail required leachate toxicity
tests, they can be treated by a  process such as stabilization/
solidification and disposed of onsite or in an  approved landfill
[7, p. 126].

    Uquid  waste from the APC system may contain caustic,
high chlorides, volatile metals, traceorganics, metal particulates,
and inorganic particulates. Treatment may require neutralization,
chemical precipitation, reverse osmosis, settling, evaporation,
filtration, or carbon adsorption before discharge [7, p. 127].

    The flue gases from the incinerator are treated by APC
systems such as electrostatic precipitators or venturi scrubbers
before  discharge through a stack.
Site Requirements

    The site should be accessible by truck or rail and a graded/
gravel area is required for setup of the system. Concrete pads
may be required for some equipment (e.g., rotary kiln). For a
typical 3 tons per hour commercial-scale unit, 2 to 5 acres are
required for the overall system site including ancillary support
[10, p. 2.5].

    Standard 440V three-phase electrical service is needed. A
continuous water supply must be available at the site. Auxiliary
fuel for feed BTU improvement may be required.
     Contaminated soils or other waste materials are hazardous
and their handling requires that a site safety plan be developed
to  provide for personnel protection and special handling
measures.

     Various ancillary equipment may be required, such as
liquid/sludge transfer and feed pumps, ash collection and solids
handling equipment, personnel and maintenance facilities,
and process-generated waste treatment equipment. In addition,
a feed-materials staging area, a decontamination trailer, an ash
handling area, water treatment facilities, and a parking area
may be required [10, p. 24].

     Proximity to a  residential neighborhood will affect plant
noise requirements and may result in more stringent emissions
limitations on the incineration system.

    Storage area and/ortanksforfuel, wastewater, and blending
of waste feed materials may be  needed.

    No specific onsite analytical capabilities are necessary on a
routine basis; however, depending on the site characteristics or
a specific Federal, State, or local requirement, some analytical
capability may be required.
Performance Data

    More than any other technology, incineration is subject to
a series of technology-specific regulations, including  the
following Federal requirements: the Clean Air Act 40 CFR 52.21
for air emissions; Toxic Substances Control Act (TSCA) 40 CFR
761.40 for PCS treatment and disposal; National Environmental
Policy Act 40  CFR 6; RCRA 40 CFR 261/262/264/270 for
hazardous waste generation, treatment performance, storage,
and disposal standards; National Pollutant Discharge Elimination
System 33 U.S.C. 1251 for discharge to surface waters; and the
Noise Control Act P.L 92-574. RCRA incineration standards
have been proposed that address metal emissions and products
of incomplete combustion.  In addition,  State requirements
must  be met if they are more stringent than the Federal
requirements [1, p. 6-1].

    All incineration operations conducted at CERCLA sites on
hazardous waste must comply with substantive and defined
Federal  and State applicable or relevant and appropriate
requirements (ARARs) at the site. A substantial body of trial
bum results and other quality assured data exists to verify that
incinerator operations remove and destroy organic contaminants
from a variety of waste matrices to the parts per billion or even
the parts per trillion level, while meeting stringent stack emission
and water discharge requirements. The demonstrated treatment
systems that will be discussed in the technology status section,
therefore, can meet all the performance standards defined by
the applicable Federal and State regulations on waste treatment,
air emissions, discharge of process  waters, and residue  ash
disposal [1, p. A-l]  [4, p. 4] [10. p. 9].

    RCRA Land Disposal Restrictions (LDRs)  that require
treatment of wastes to best demonstrated available technology
(BOAT) levels  prior to land  disposal may  sometimes be
determined to be ARARs for CERCLA response actions. The solid
                                      Engineering Bulletin: Mobile/Transportable Incineration Treatment

                                                     2-24

-------
 residuals from the incinerator may not meet required treatment
 levels in all cases. In cases where residues do not meet BOAT
 levels, mobile incineration still may be selected, in certain
 situations, for use at the site if a treaubility variance establishing
 alternative treatment levels b obtained. EPA has made the
 treatability variance process available in order to ensure that
 LORs do not unnecessarily restrict the use of alternative and
 innovative treatment technologies. Treatability variances may
 be justified for handling complex soil and debris matrices. The
 following guides describe when and how to seek a treatability
 variance for soil and debris:   Superfund  LOR Guide #6A,
 "Obtaining a Soil and Debris Treatability Variance for Remedial
 Actions,' (OSWER Directive 9347.3-06FS) [13] and Superfund
 LOR  Guide  #68, "Obtaining  a Soil and Debris Treaubility
 Variance for Removal Actions," (OSWER Directive 9347.3-
 07FS)[14J.
 Technology Status
     To date, 49 of the 95 RODs designating thermal remedies
 at  Superfund  sites have selected onsite incineration  as an
 integral part of a preferred treatment alternative.
     Table 2 lists the site experience of the various mobile/
 transportable incinerator systems.  It includes information on
 the incinerator type/size, the site size, location, and contaminant
 source or waste type treated [5] (3, p. 80] [8, p. 74].

     The cost of incineration includes fixed and operational
 costs.  Fixed costs include site preparation, permitting, and
 mobilization/demobilization. Operational costs such as labor,
 utilities, and fuel are dependent on the type of waste treated
 and the size of the site. Figure 2 gives an estimate of the total
 cost for incinerator systems based on site  size [12, pp. 1-3].
 Superfund  sites contaminated  with  only volatile organic
 compounds can have even lower costs for thermal treatment
 then the costs shown in Figure 2.
EPA Contact

    Technology-specific questions  regarding mobile/
transportable incineration may be directed  to  Donald A.
Oberacker, U.S. EPA Risk Reduction Engineering Laboratory, 26
West  Martin  Luther  King Drive, Cincinnati, Ohio  45268,
telephone: FTS 684-7510 or (513) 569-7510.
                                                      Tctbl* 2.
                                                 Technology Status
Treatment
System/
Vendor
Rotary Kiln
Ertjco
Rotary Kiln
IT
Rotary Kiln
Vesta
Thermal
Capacity
(MMBTV/Hr)
35
100
56
8
12
Experience
Site, Location
Sydney Mines, Valrico, FL*
Lenz Oil NPL Site, Lemont, IL*
Naval Construction Battalion
Center (NCBQ, Gulfport, MS
Union Carbide, Seadrift, TX*
Smithrville, Canada*
Bridgeport Rental, Bridgeport, NJ**
Comhusker Army Ammunition Plant
(CAAP), Grand Island, NE*
Louisiana Army Ammunition Plant
(LAAP), Shreveport, LA"
Motco, Texas City, TX**
Fairway Six Site, Aberdeen, NC
Fort A. P. Hill, Bowling Green, VA
Nyanza/Nyacol Site, Ashland, MA*
Southern Crop Services Site
Delray Beach, FL
American Crossarm ft Conduit Site
Chehalis, WA*
Rocky Boy, Havre, MT*
Watte Volume
(tons)
10,000
26,000
22,000
N/A
7,000
100,000
45,000
100,000
80,000
50
200
1,000
1,500
900
1,800
Contaminant Source or
Waste Type
Waste oil
Hydrocarbon - sludge/solid/liquid
Dioxin/soil
Chemical manufacturing
PCB transformer leaks
Used oil recycling
Munitions plant redwater pits
Munitions plant redwater lagoon
Styrene tar disposal pits
Pesticide dump
Army base
Dye manufacturing
Crop dusting operation
Wood treatment
Wood treatment
 NA - Not available   • Contracted, others completed   * Superfund Site
                                [Source: References 3, 5, 8]
Engineering Bulletin: Mobile/Transportable Incineration Treatment

                                                 2-25

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                                     Technology Status (Continued)
Treatment
System/
Vendor
Roury Kiln
Weiton
^ ^ •
Rotary Kiln
AET
Rotary Kiln
Boliden
Rotary Kiln
Harmon
Rotary Kiln
Bell
Rotary Kiln
Kimmins
Rotary Kiln
US£/M
Roury Kiln
V«rtoc
Shirco Infrared
Haztech
Shirco Infrared
CDC Engr.
Shirco Infrared
OH Materials
Shirco Infrared
U.5. Worte
Circulating Bed
Com bus tor
Ogden
TtttlllHm
Capodtr
(MMBTU/Hr)
35
20
40
82
30
100
10
35
30
NA
30
12
10
10
fxpcr/cnc*
Site, Location
Lauder Salvage, Beardstown, IL
Paxton Ave., Chicago, IL*
Valdez, AK
Oak Creek, Wl
Prentii Creosote & Forest Products
Prentis, MS
Bog Creek. Howell Township, N|*
Bell Lumber&Pole,
New Brighton, MM*
Lasalle, IL*4
Denney Farm, MO
Vertac, Jacksonville, AR*»
Peak Oil, Tampa, FL*
Lasalle, IL4
Rubicon, Ceismar, LA*
Florida Steel, Indiantown, FL*
Twin Qty AAP, New Brighton, MN
Coosebay, Canada
Cas Station Site, Cocoa, FL
Private Site, San Bemadino, CA
Arco Swanson River Field
Kenai, AK*
Stockton, CA*
Waste Voiumt
(torn)
8,500
16,000
NA
50,000
9,200
22,500
21,000
69,000
6,250
6,500
7,000
30,000
52,000
18,000
2,000
4,000
1,000
5,400
80,000
16,000
Contaminant Sourer or
Watte Typ*
Metal scrap salvage
Waste lagoon
Crude oil spill
Dye manufacturing
Creosote/soil
Organics
Wood treatment
PCB capacitor manufacturing
Dioxin Soils
Chemical manufacturing
Used oil recycling, PCBs/Lead
Transformer reconditioning
Chemical manufacturing
Steel mill used oils
Munitions plant
PCBs
Petroleum tank leak
Hydrocarbons
Oil pipeline compressor oil
Underground tank oil leak
NA • Not avaOablc  * Contracted, others completed   4Superfund Site
[Source: References 3, 5, 8]
                                 Engineering Bulletin: Mobile/Transportable Incineration Treatment
                                                2-26

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                                                     Figure 2
                                      Effect of Sit* Six* on mclnwoflon Cods
                         1.600.
                                  Very Small      Small       Medium       Large
                                    <5,000    5,000-15,000 15,000-30,000   > 30,000
Source Trw Hazardous Wutt Corauttant (12. pp. 1 -3]
                                               Site Size-Tons
                                              REFERENCES
5.
6.
7.
High Temperature Thermal Treatment for CERCLA           8.
Waste: Evaluation and Selection of On-site and Off-site
Systems. EPA/540/X-88/006, U.S. Environmental
Protection Agency Office of Solid Waste and                9,
Emergency Response, December 1988.
Gupta, C., A. Sherman, and A. Cangadharan,
Hazardous Waste Incineration: The Process and the
Regulatory/Institutional Hurdles, Foster Wheeler
Enviresponse, Inc., Livingston, NJ., (no date).
Cudahy,)., and A. Eicher. Thennal Remediation             10.
Industry, Markets, Technology, Companies, Pollution
Engineering, 1989.
Stumbar, ]., et al. EPA Mobile Incineration                  11.
Modifications, Testing and Operations, February 1986
to June 1989. EPA/600/2-90/042, U.S. Environmental
Protection Agency, 1990.
Cudahy, j., and W. Troxler. Thermal Remediation            12.
Industry Update B, Focus Environmental, Inc. Knoxville,
TN, 1990.                                              13
Experience in Incineration Applicable to Superfund Site
Remediation. EPA/625/9-88/008, U.S. Environmental
Protection  Agency Risk Reduction Engineering
Laboratory and Center for Environmental Research           14
Information, 1988.
Technology Screening Guide for Treatment of CERCLA
Soils and Sludges. EPA/540/2-88/004, U.S.
Environmental Protection Agency, 1988.
Johnson, N., and M. Cosmos. Thermal Treatment
Technologies for Haz Waste Remediation, Pollution
Engineering, 1989.
Stumbar, J., et al. Effect of Feed Characteristics on the
Performance of Environmental Protection Agenc/s
Mobile Incineration System.  In Proceedings of the
Fifteenth Annual Research Symposium, Remedial
Action, Treatment and Disposal of Hazardous Wastes.
EPA/600/9-90/006,1990.
Shirco Infrared Incineration System, Applications
Analysis Report. EPA/540/A5-89/010, U.S.
Environmental Protection Agency, 1989.
Mobile Treatment Technologies for Superfund  Wastes.
EPA 540/2-86/003(0, U.S. Environmental Protection
Agency Office of Solid Waste and  Emergency Response,
1986.
McCoy and Associates, Inc., The Hazardous Waste
Consultant, Volume 7, Issue 3, 1989.
Superfund LDR Guide #6A:  Obtaining a Soil and
Debris Treatability Variance for Remedial Actions.
OSWER Directive 9347.3-06FS, U.S. Environmental
Protection  Agency, 1989.
Superfund LDR Guide #68:  Obtaining a Soil and Debris
Treatability Variance for Removal Actions. OSWER
Directive 9347.3-07FS, U.S.  Environmental Protection
Agency, 1989.
Engineering Bulletin: Mobile/Transportable Incineration Treatment

                                                   2-27

-------
2.14         KEY REFERENCE LIST - INCINERATION
American Society of Mechanical Engineers, 1988, Hazardous Waste Incineration; A
       Resource Document.

U.S. Environmental Protection Agency, 1989.  Contaminated Soil Remediation by
       Circulating Bed Combustion, in EPA Forum on Innovative Hazardous Waste
       Treatment Technologies: Domestic and International, EPA/540/2-89/055,
       September  1989.

U.S. Environmental Protection Agency, 1986.  Handbook: Permit Writer's Guide to Test
       Burn Data, EPA/625/6-86/012.

U.S. Environmental Protection Agency, 1988.  Experience in Incineration Applicable to
       Superfund Site Remediation, EPA/540/9-88/008.

U.S. Environmental Protection Agency, 1988.  Hazardous Waste Incineration: Questions
       and Answers,  EPA/530/SW-88/018.

U.S. Environmental Protection Agency, 1989.  Applications  Analysis  Report - American
       Combustion Pyretron Destruction System, EPA/540/A5-89/008.

U.S. Environmental Protection Agency, 1989.  Applications  Analysis  Report - Shirco Infrared
       Incineration System, EPA/540/A5-89/007 (Also in videocassette  from EPA, Edison, NJ.)

U.S. Environmental Protection Agency, 1989.  Hazardous Waste Incineration Measurement
       Guidance Manual, Volume III, EPA/625/6-89/021.

U.S. Environmental Protection Agency, 1989.  High Temperature Thermal Treatment for
       CERCLA Waste:  Evaluation and Selection of Onsite and Offsite  Systems,
       EPA/540/4-89/006.

U.S. Environmental Protection Agency, 1989.  Guidance on  Setting Permit Conditions and
       Reporting Trial Burn Results, Volume  II, EPA/625/6-89/019.

U.S. Environmental Protection Agency, 1990.  Guidance on  Metals and Hydrogen
       Chloride Controls for Hazardous Waste Incinerators,  Volume IV,  EPA 530/SW-
       90/004.

U.S. Environmental Protection Agency. Mobile Incineration Systems; Videocassette from
       EPA, Edison,  NJ.
NOTE: EPA  Headquarters Hazardous Waste Collection contains 276 references on incineration.
       This collection is accessed through EPA regional libraries.

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                            TABLE OF CONTENTS

Section


3.0  THERMAL DESORPTION	 3-1

      3.1    TECHNOLOGY DESCRIPTION	 3-1

            3.1.1  Directly Heated Desorption  	 3-2
            3.1.2  Indirectly Heated Desorption	 3-2
            3.1.3  In Situ Steam Extraction  	 3-3

      3.2    TECHNOLOGY STATUS	 3-3

      3.3    APPLICATION 	 3-3

      3.4    TECHNOLOGY STRENGTHS  	 3-3

      3.5    TECHNOLOGY LIMITATIONS	 3-4

      3.6    POTENTIAL MATERIALS HANDLING REQUIREMENTS	 3-4

      3.7    WASTE CHARACTERISTICS AFFECTING PERFORMANCE  	 3-4

      3.8    EXHIBIT 1 - WASTE  CHARACTERISTIC TABLE	 3-5

      3.9    EXHIBIT 2 - DATA FROM SEMI-ANNUAL STATUS REPORT	 3-6

      3.10   EXHIBIT 3 - INNOVATIVE TREATMENT TECHNOLOGIES: SEMI-
            ANNUAL STATUS REPORT - SEPTEMBER, 1991  	 3-7

      3.11   EXHIBIT 4 - BOILING POINTS OF SELECTED COMPOUNDS	 3-10

      3.12   EXHIBIT 5 - THE LOW TEMPERATURE THERMAL STRIPPING
            PROCESS -USATHAMA  	 3-12

      3.13   EXHIBIT 6 - SITE TECHNOLOGY PROFILE - CHEMICAL WASTE
            MANAGEMENT	 3-14

      3.14   EXHIBIT 7 - SITE TECHNOLOGY PROFILE - RECYCLING SCIENCES
            INTERNATIONAL, INC	 3-16

      3.15   EXHIBIT 8 - ENGINEERING BULLETIN: THERMAL DESORPTION
            TREATMENT	 3-18

      3.16   KEY REFERENCE LIST - THERMAL DESORPTION	 3-26

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                              3.0  THERMAL DESORPTION
3.1
TECHNOLOGY DESCRIPTION
       Thermal desorption technologies consist of a wide variety of processes that vaporize
volatile and semi-volatile organics from soil and sludge.  The processes are planned and designed
to avoid combustion of the contaminants in the primary unit, resulting in several advantages.
After desorption, the volatilized organics may be subsequently treated in an afterburner or
condensed for reuse or destruction.  The types of air pollution control equipment (APC) needed
to treat the exhaust gases will vary depending on the technology and the nature of the
contaminated media. Dust and particulates may be controlled with cyclones, baghouses or venturi
scrubbers; small amounts of acid vapor may require scrubbing; and residual organics may be
condensed and/or captured in  activated carbon adsorption units.

       Although there are no  generally accepted definitions for grouping the different types of
thermal desorption, the following three terms may be used to describe the different processes:

              Directly heated desorption
              Indirectly heated desorption
              In situ steam extraction
  Soils containing organics
  Heat(300°F-1200°F)
                     Thermal
                   Desorption
Treated residual
Recovered contaminants
Water from APC *
Treated orfgases
Participate control dust
Spent carbon *
• Depending on technology
                                             3-1

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3.1.1          Directly Heated Desorption

       Direct-fired systems use a fuel burner as a heat source which may be either internal or
external to the primary soil-heating chamber. Internally fired units resemble rotary kilns,
operate at temperatures of less that 800eF (426°C), and have generally been limited to use for the
treatment of non-chlorinated organics such as petroleum spills. Exhaust gases from the rotating
cylinder pass through a dust-collection system prior to secondary combustion.  OH Materials, Inc.
operates a low temperature direct-fired clesorber.  Canonie Environmental has a low temperature
thermal aeration system, which consists of a rotating dryer that heats incoming air from 300 to
600eF (148 to 315°C) by an external flame. The system forces heated air counter-current to the
flow of soils in a rotary drum dryer. The system can be used for chlorinated wastes with carbon
adsorption recovery of the treated organics.

3.1.2          Indirectly Heated Desorpltion

       Indirectly heated systems transfer heat through metal surfaces to the waste.  Indirect
heating produces a lower volume of exhaust gas which results in a low  loading for the exhaust-
gas treatment and air-pollution-control systems. This also helps to control particulate carry-
over.  Vaporized contaminants are removed from the  thermal processor using a sweep gas with
low oxygen content to prevent oxidation (combustion and explosion).  Desorbed organics may be
condensed and/or removed by carbon adsorption.  These systems can be further characterized by
their operating  range, with approximately 600°F serving as a breakpoint. Systems operating at
less than  this temperature are designed for volatiles and systems above  this temperature are
intended  for semi-volatile organics and PCBs.  It should be noted, however, that semi-volatile
organics may also be removed at the lower operating temperature range (below their boiling
point) as  a result of stripping in the presence of water vapor and/or volatiles.

       Examples of developers of this technology at the lower operating temperature range
include Weston Services, Inc. and the U.S. Army Toxic and Hazardous  Materials Agency
(USATHAMA). These units consist of a low-temperature thermal-stripping process, which uses
a hollow-screw mixer that is filled with hot oil to heat the soil to approximately 450°F (232°C).

       Two examples of technologies at higher temperatures (>600°FX315eC) are Chemical Waste
Management's X*TRAX System  and SoilTech's AOSTRA Taciuk Processor. Both processes
recover contaminants for subsequent recycling or destruction.  The X*TRAX system uses a
nitrogen atmosphere to keep the  process oxygen free.  Waste is treated  in an indirectly heated
rotating dryer at temperatures ranging from 600 to 900°F (315 to 482°C).  The volatilized organics
are carried to a gas treatment system that condenses and recovers the contaminants. The Taciuk

                                            3-2

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process consists of a preheating chamber which operates at 300 to 600T causing the vaporization
of water and light hydrocarbons. A second stage involves heating at temperatures up to 1,150°F
to cause vaporization and pyrolysis of heavy hydrocarbons.  The desorbed hydrocarbons are then
recovered in a condenser.

3.1.3          In Situ Steam Extraction

       This process uses hollow-stem drills to inject steam and hot air into the ground.  Volatile
organics are stripped from the soil (or ground water) and collected in a shroud at the surface.
The technology is especially applicable for volatile contamination near the surface (where vacuum
extraction is less effective). Although not generally applicable for semivolatiles, some removal
may take place.  Toxic Treatments (USA) has used their unit to treat soil at a state Superfund
site.  Steam (at 450T) (232°C)  and hot air (at 300°F) (148°C) are injected through counter
rotating drills  up to 30 feet in depth. Volatile contaminants and water vapor are collected and
removed from the off-gas stream by condensation.

3.2           TECHNOLOGY STATUS

              •      This technology has been selected for 17 Superfund sites.
              •      Three PRP sites in Region I have been remediated by Canonie
                     Engineering.

3.3           APPLICATION

              •      Boiling points for selected compounds are given in Exhibit 4.  These are
                     given for comparative purposes and most wastes will require treatability
                     studies to confirm removal levels.  Removal efficiencies  may vary widely
                     for similar soils.
              •      Thermal desorption is  appropriate for both high and low concentrations of
                     contaminants.
              •      See the article on Status of Thermal Remediation in the chapter on
                     Incineration (Chapter 2.0).

3.4           TECHNOLOGY STRENGTHS

              •      Lower temperatures eliminate volatilization of some metal compounds
                     (lead, cadmium, copper, and zinc)
              •      These processes operate at lower temperatures than incineration and so use
                     less fuel.

                                            3-3

-------
              •      Concerns with products of incomplete combustion are eliminated by
                     avoiding combustion in the primary desorbing unit.

              •      The technology has the ability to separate and recover concentrated
                     contaminants which may then be taken off-site for treatment.

              •      Decontaminated soil still retains some organics and soil properties.  It is not
                     ash.


3.5           TECHNOLOGY LIMITATIONS


              •      The technology is not appropriate for inorganic contaminants.

              •      Although thermal desorbers operate at much lower temperatures than
                     incinerators, some metals (i.e., mercury, arsenic) may volatilize during
                     treatment.


3.6           POTENTIAL MATERIALS HANDLING REQUIREMENTS


              •      Excavation is required for desorber units.

              •      Dewatering may be necessary to achieve acceptable soil moisture content.
                     (The cost of desorption increases as the moisture content increases.)

              •      The material must be screened to remove oversized particles.

              •      Size reduction may be needed to achieve feed size required by the
                     equipment.

              •      The pH may be adjusted to achieve a pH between 5 and 11.


3.7           WASTE CHARACTERISTICS AFFECTING PERFORMANCE


              •      Temperature and residence time are the primary factors affecting
                     performance.

              •      Wastes with high moisture content significantly increase fuel usage.

              •      Fine silt and clay may result in greater dust loading to the downstream air-
                     pollution-control equipment,  especially for directly heated systems.

              •      The volatility of the targeted  waste constituents will be the primary factor
                     that affects treatment performance. A good  indicator of volatility is the
                     pure component boiling point (see Exhibit 4). It is important to recognize
                     that almost all hazardous wastes are mixtures of various organic
                     constituents (both hazardous and non-hazardous) and these other
                     constituents often have a significant impact on the actual removal of the
                     specific compound from that  matrix.  Removal may be achieved at
                     temperatures below the boiling point.
                                           3-4

-------
3.8
EXHIBIT 1 - WASTE CHARACTERISTIC TABLE
  Waste Type: Soils and Sludges
  Technology: Low Temperature Thermal Stripping
     Characteristics
   Impacting Process
       Feasibility
                   Reason for Potential Impact
        Data
     Collection
   Requirements
  Presence of:
  • Metals .
  • Inorganics
  • Less volatile
   organics
  pH<5,
  Presence of mercury
  (Hg)
  Unfavorable soil
  characteristics:

  • High percent of clay
   or silt

  • Tightly aggregated
   soil or  hardpan

  • Rocky  soil or glacial
   till

  • High moisture
   content
             Some process effective only for highly
             volatile organics (Henry's Law Constant
             >3 x 10~3 atm-m3/mole).  XTRAX system
             can treat organics with boiling points up
             to about SOOT (426eC)

             Corrosive effect on system components

             Boiling point of mercury 670T (356°C)
             close to operating temperature for process
             212 to  572eF (100 to 300°C).
             Fugitive dust emissions during handling.
             Incomplete devolatilization during
             heating.

             Rock fragments interfere with processing.
             High energy input required.  Dewatering
             may be required as pretreatment.
Analysis for priority
pollutants
pH analysis

Analysis for mercury
Grain size analysis


Soil sampling and
mapping

Soil mapping


Soil moisture content
  Source:  Technology Screening Guide for Treatment of Soils and Sludges EPA/540/2-88/004
          (1988)
                                           3-5

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3.9
EXHIBIT 2 - DATA FROM SEMI-ANNUAL STATUS REPORT
 Selection Frequency*
           6
                           Thermal Desorption
           5


   NUMBER
   Of TIMES  3
  SELECTED
           2

           1

           0
               84    85    86    87    88    89
                                          90
       * Data derived from 1982 • 1990 Records of Decision ( RODs ) and anticipated design and
        construction activities.
                                                         September 1991
     Contaminants Treated By Thermal Desorption
          14
          12
          10
  Number
     of     8
 Superfund  6
   Sites    4

           2
           0
                VOCs
                   PCBS
PAHs   PCP/Other  SVOCs
   * Data derived from 1982 - 1990 Records of Decision (RODs) and anticipated design and construction
     activities. At some sites, the treatment is for more than one major contaminant.
                                  3-6

-------
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-------
3.11
EXHIBIT 4 - BOILING POINTS OF SELECTED COMPOUNDS
       Chemical Name

BeCl2
Uranium and Compounds
Iron
FeCl,
Fed,
Nickel
Chromium
Cr02Cl2
Copper
CuCl
CuCl2
Chromium, hexavalent
Manganese and Compounds
Lead (Pb)
PbCl2
Barium
BaO
Zinc and Compounds
ZnO,
                                                   °F
                                         Boiling Point
                                         	rci
Cadmium
CdO
CdCl,
SnCl2
Arsenic and Compounds
AS2O,
2,3,7,8-dioxin
Mercury
HgCL
Phenanthrene
Sc02
Pentachlorophenol
Fluorene
Lindane
Polychlorinated biphenyls
Pyrene
DDT
Methanol
Styrene
Xylene
Ethylbenzene
Chlorobenzene
Tetrachloroethane
1 , 1 ,2,2-tetrachIoroethane
Tetrachloroethene
1 , 1 ,2-trichloroethane
Toluene
                                   7,052
                                   6,904
                                   4,982
                                   1,238
                                     599
                                   4,949
                                   4,842
                                     243
                                   4,653
                                   2,491
                                   1,819
                                   4,500
                                   3,564
                                   3,171
                                   1,742
                                   2,084
                                   3,632
                                   1,665
                                   3,272
                                   1,350
                                   1,409
                              1,652-1,832
                                   1,760
                                   1,153
                                   1,135
                                     379
                               932-1,500
                                     675
                                     575
                                     644
                                     603
                                     588
                                     559
                                     550
                                     512
                                     500
                                     500
                                     360
                                     293
                                     280
                                     211
                                     270
                                 264-295
                                     295
                                     250
                                     235
                                     232
    (3,900)
    (3,818)
    (2,750)
      (670)
      (315)
    (2,732)
    (2,672)
      (H7)
    (2,567)
    (1,366)
      (993)
    (2,482)
    (1,962)
    (1,744)
      (950)
    (1,140)
    (2,000)
      (907)
     (1800)
      (732)
      (765)
(900-1,000)
      (960)
      (623)
      (613)
      (193)
  (500-800)
      (357)
      (302)
      (340)
      (317)
      (309)
      (293)
      (288)
     (267+)
      (260)
      (260)
      (182)
      (145)
      (138)
      (136)
      (132)
  (129-146)
      (146)
      (121)
      (113)
      (111)
                                         3-10

-------
3.11          EXHIBIT 4 - BOILING POINTS OF SELECTED COMPOUNDS - (Continued)


                                                          Boiling Point
       Chemical Name                                T	CO

Trichloroethylene (TCE)                              189              (87)
1,2-dichloroethane                                    183              (84)
Methyl ethyl ketone                                  176              (80)
Benzene                                              176              (80)
Carbon tetrachloride                                  171              (77)
1,1,1-trichloroethane                                  165              (74)
Chloroform                                          142              (61)
Cis-l,2-dichloroethylene                              140              (60)
1,1-dichloroethane                                    135              (57)
Acetone                                              133              (56)
1,2-trans-dichloroethylene                            118              (48)
Methylene chloride                                   106              (41)
1,1-dichloroethene                                     90              (32)
Cyanides (for HCN)                                   80              (27)
Naphthalene                                          70              (21)
Vinyl chloride                                          7           (-13.9)
       Boiling point ii for the pure chemical itielf and may not reflect that for the various compoundi.
       Sublimate*.
       Decompoiei.
                                           3-11

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       3.12
EXHIBIT 5 - THE LOW TEMPERATURE THERMAL STRIPPING PROCESS
USATHAMA
    US Army Corps
    of Engineers
          USATHAMA
          U.S. Army Toxic and Hazardous
                   Materials Agency
          ^
         Aberdeen Proving Ground, Maryland 21010-5401
 THE  LOW
 TEMPERATURE
 THERMAL
 STRIPPING  PROCESS
    Some of the Army's past waste disposal practices have
 resuhed in soil contaminated with cleaning solvents and fuels
 commonly called VOCs, or Volatile Organic Compounds.
 Current methods to treat this soil contamination include incin-
 eration, disposal at a landfill or hazardous waste disposal
 facility and in situ volatilization. The Army has devised a
 fourth way, with a system that expends less energy than an
 incinerator and is cheaper to run.

    The process, Low Temperature Thermal Stripping, or
 LTTS, has been developed and demonstrated by the US. Army
 Toxic and Hazardous Materials Agency (USATHAMA), a
 Reid Operating Agency for the US. Army Corps of Engineers,
 Aberdeen Proving Ground, Md.

    Pilot and field tests during the past few years have proven
 the success of the LTTS as another option for cleaning up VOC-
 contaminated soil. The U.S. Army Corps of Engineers Water-
 ways Experiment Station (WES), Vicksburg, Miss, is now
 accepting soil samples for pre-screening to determine the
 extent to which this technology is able to remove VOCs from
 different soil types.

 WHAT ARE VOCs?

   VOCs are compounds which volatilize, or turn into gas, at
 low temperatures. VOCs commonly found at Army installa-
 tions are trichloroethylene (TCE), dichloroethylene, diesel
fuel, methyl ethyl ketone (MEK), tetrachloroethylene, cleaning
 solvents and aviation fuel. VOCs are generally found wherever
 solvents and fuels were handled, such as fire training pits, burn
pits, spill sites, and lagoons. VOCs in soil pose the risk of the
contaminants seeping into drinking water supplies. If the
concentration of VOCs in the soil is high and the soil is left
untreated, VOC levels in drinking water may exceed drinking
water limits if the ground water is used as source of drinking
water.
                               WHY USE THE LTTS PROCESS ?

                                  Incineration is a successful process for eliminating VOC
                               contamination in soil In the incineration process, soil is placed
                               in a kiln, heated by fuel to temperatures rangingfrom lOOOto
                               2000 degrees Fahrenheit The gases in the soil are driven off
                               and then are secondarily burned in an afterburner, which is
                               usually run at a slightly higher temperature than the kiln,
                               completing the VOC destructioa The vapors pass through a
                               scrubber system, before being released into the atmosphere.

                                  Incineration, however, is a costly process. The Army's
                               experience with certain types of organic contaminants in soil
                               resulted in costs of approximately $300 per ton of soil. The
                               L'l'lb process is expected to cut costs by more than 50 percent

                                  In situ or "in place" volatilization is an alternate method to
                               LTTS that uses a vacuum extraction system to remove the
                               VOCs at the site. In this system, ventingpipes are placed in the
                               ground at the contaminated site and air draws the VOCs up the
                               pipes and into a treatment system. The cost of this treatment is
                               about $50 per ton of soil However, there are more limitations
                               to the use of this process. The contaminated soil cannot be very
                               wet and not aD VOC-contaminated soil is treatable with in situ
                               volatilization, particularly silty and clayey soils with low
                               permeabilities

                               HOW DOES THE LTTS PROCESS WORK?

                                  Contaminated soil is fed through an opening at the
                               top of the system, called the soil feed hopper. The soil
                               falls into the main  part of the system, or thermal
                               processor. The thermal processor consists of two sepa-
                               rate but identical units, each containing four large,
                               hollow screws, eighteen inches in diameter, twenty feet
                               long. As the screws turn, they churn the soil, breaking
                               it up and pushing it from the feed end of the processor
                               to the discharge end.   In the  meantime, hot oil is
                               pumped through the inside of the screws. The constant
                               churning of the  soil and movement of hot oil up and
                               down the length of the screws heat the soil and volatil-
                               izes the VOCs. Additional heat is provided by the walls
                               of the  processor, called the trough jacket, which also
                               contains flowing hot oil.  The thermal  processor heats
                               up to a maximum of about 650 degrees Fahrenheit.
                                                                                Printed on recycled paper.
                                                3-12

-------
     Once the VOCs are vaporized, they flow through
  piping into a burner or other means of treatment, such
  as a scrubber or carbon adsorption system. The VOC-
  free airstream then passes through a discharge stack
  monitored for VOCs.

     In the meantime, the soil which is now virtually VOC-free,
  faBs into the discharge end of the processor, where it can be put
  back into the excavation area

  WHAT HAVE PREVIOUS
  DEMONSTRATIONS CONCLUDED?

    The results of the pilot and field tests showed the following
  for the particular soils and VOCs treated
   - More than 99 percent of the VOCs were removed from the
  soil;
   - The process equipment available is capable of treating at
  least 10 tons of contaminated soil per hour, and
   - There was a 99.99 percent Destruction and Removal
  Efficiency in the afterburner incineration step.
WHAT NEXT?

   In coordination with USATHAMA, WES is estab-
lishing a bench-scale capability for screening contami-
nated soils to determine how well they can be treated
by LTTS. The target date for having this capability is
set for October 15, 1990. Federal agencies interested
in determining the feasibility of using this technology
for their site may send soil samples to WES for screen-
ing.  The work will be performed on a cost-reimbur-
sable basis.  The results will be published in a report
discussing the results of the soil samples that were
used.

WHO DO I CONTACT?

   Federal agencies interested in sending soil samples
for pre-screening should contact Mr. Daniel Averett,
WES, at (601) 634-3959. For more information on the
technical aspects of the LTTS, contact CPT Craig A
Myler, USATHAMA, at (301) 671-2054.
                                                                             AM TO
                        HOT Ott.
                       REAEAVOM
                                                               A* CONTAINING
                                                               BTMPPEO VOC'8
      Schematic diagram of the low temperature thermal
      stripping pilot system: (1) soil 1eed hopper, (2) thermal
      processor, (3) hollow screw conveyor with hot fluid
      flowing inside, (4) trough jacket,
(5) oil heating system, (6) off-gas emission monitoring,
(7)  afterburner, and  (8) stack testing for VOC,
particulates, and HCI.
USATHAMA Cir 200-1-5
                                                3-13
                                       AUGUST 1990

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  3.13
                                 TECHNOLOGY ™OFILE - CHEMICAL WASTE
Technology Profile
DEMONSTRATION
    PROGRAM
                    CHEMICAL WASTE MANAGEMENT
             (X*TRAX™ Low-Temperature Thermal Desorption)
TECHNOLOGY DESCRIPTION:

The  X*TRAX™  technology  is  a  low-
temperature  (200  to  900*  F)  thermal
separation  process  designed  to  remove
organic contaminants from soils, sludges, and
other solid media (Figure 1). It is not an
incinerator or a pyrolysis system.  Chemical
oxidation and reactions are not encouraged,
and no combustion byproducts are formed.
The organic contaminants are removed as a
condensed high BTU  liquid, which  must
then be  either  destroyed in a permitted
incinerator or used as a supplemental fuel.
Because of lower operating temperatures and
gas flow rates, this process is less expensive
than incineration.

An externally-fired rotary dryer is used to
volatilize the water and organic contaminants
into  an  inert  carrier gas stream.   The
processed  solids are  then  cooled  with
condensed water.
             The moisture content is adjusted to eliminate
             dusting and produce a solid that is ready to be
             placed and compacted in its original location.
             The feed rate, the dryer temperature, and the
             residence time of materials in the dryer can be
             adjusted to control the degree of contaminant
             removal.

             The organic  contaminants and  water vapor
             driven from the solid are transported out of
             the dryer by an inert nitrogen carrier gas. The
             carrier  gas flows through a duct to the  gas
             treatment system, where organic vapors, water
             vapors, and dust particles are  removed and
             recovered from the gas.  The gas first passes
             through  a  high-energy  scrubber.    Dust
             particles and  10 to 30 percent of the organic
             contaminants are removed by  the scrubber.
             The  gas  then  passes  through two heat
             exchangers in series, where it is cooled to less
             than 40°F.  Most of the remaining organic and
             water vapors  are condensed as  liquids in  the
             heat exchangers.
                            hfurc I I'ilol-Sralc X'TRAX SyMcm
Source: The Superfund Innovative Technology Evaluation Program: Technology Profiles
       EPA/540/5-90/006 (1990).
                                         3-14

-------
The  majority  of the  carrier  gas passing
through the gas treatment system is reheated
and recycled to the dryer. Approximately 5
to 10 percent of the gas is cleaned by passing
it through a filter and two carbon adsorbers,
before it is discharged  to the  atmosphere.
The volume of gas released from this process
vent is approximately  100 to 200 times less
than an equivalent capacity incinerator. This
discharge helps  maintain a small negative
pressure  within  the system and  prevents
potentially contaminated gases from leaking.
The discharge also allows makeup nitrogen to
be added to the  system, preventing oxygen
concentrations from exceeding combustibility
limits.
WASTE APPLICABILITY:

This technology was developed primarily for
on-site remediation of organic contaminated
soils.  The process can remove and collect
volatiles, semivolatiles, and PCBs,  and  has
been  demonstrated  on a  variety  of soils
ranging  from sand to very cohesive clays.
Filter cakes and pond sludges have also been
successfully  processed.    In most cases,
volatile organics are reduced to below 1 ppm
and  frequently  to  below  the   laboratory
detection level.  Semivolatile organics  are
typically reduced to less than 10 ppm and
frequently below 1 ppm.  Soils containing
120 to 6,000 ppm PCBs have been reduced to
2 to 25 ppm.

The  process  is  not applicable  to heavy
metals,  with the  exception  of mercury.
However, stabilization agents can be added
to the feed or treated solids before cooling
for metals treatment. Tars and heavy pitches
create material handling problems.
STATUS:

CWM currently has three X*TRAX systems
available:  laboratory, pilot, and full-scale.
There are two laboratory-scale systems being
used for treatability studies.  One system is
operated by Chem Nuclear systems, Inc. in
Barnwell, SC for mixed (RCRA/Radioactive)
wastes; and the other by CWM RD&D at its
facility in Geneva, IL, for RCRA and TSCA
wastes.    More  than  30  tests  have  been
completed since January 1988. Results from
these laboratory-scale tests  included  97.9
percent   removal   efficiency    for   soil
contaminated with 805 ppm PCBs.

The  pilot-scale system is in operation at the
CWM Kettleman Hills facility in California.
During   1989-90,   ten    different  PCB-
contaminated soils  were  processed under a
TSCA RD&D permit which expired in January
1990. For soils containing  120 to 6,000 ppm
PCBs, the removal efficiency ranged from 97.2
to 99.5%.  Nine of the ten soils were reduced
to less than 25 ppm.

The  first Model 200 full-scale  X*TRAX
system was completed in early  1990 and is
shown in Figure 1.  The system  will be used
to remediate 35,000 tons of PCB-contaminated
soil.     EPA   plans  to  conduct  a   SITE
demonstration during this remediation.
FOR FURTHER INFORMATION:

EPA Project Manager:
Paul dePercin
U.S. EPA
Risk Reduction Engineering Laboratory
26 West Martin Luther King Drive
Cincinnati, OH 45268
513-569-7797
FTS: 684-7797

Technology Developer Contact:
Carl Swanstrom
Chemical Waste Management, Inc.
Geneva Research Center
1950 S. Batavia
Geneva, IL 60134
708-513-4578
                                        Evaluation
                                        3-15

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3.14
EXHIBIT 7 - SITE TECHNOLOGY PROFILE - RECYCLING SCIENCES
INTERNATIONAL, INC.
Technology Profile
                   DEMONSTRATION
                       PROGRAM
             RECYCLING SCIENCES INTERNATIONAL, INC.
                       [formerly American Toxic Disposal]
                   (Desorption and Vapor Extraction System)
TECHNOLOGY DESCRIPTION:

The Desorption and Vapor Extraction System
(DAVES) uses a low-temperature, fluidized
bed to remove organic and volatile inorganic
compounds  from  soils,  sediments,  and
sludges. Contaminated materials are fed into
a co-current, fluidized bed, where they are
well  mixed with hot air (about 1,000 to
1,400° F) from a gas-fired heater (Figure 1).
Direct  contact between  the waste material
and  the  hot   air  forces  water   and
contaminants from  the waste into the gas
stream  at  a relatively  low fluidized-bed
temperature (about 320 ° F). The heated air,
vaporized water and organics, and entrained
particles flow out of the dryer to  a gas
treatment system.

The  gas  treatment  system removes  solid
particles, vaporized water, and organic
                               vapors from  the  air  stream.   A  cyclone
                               separator and baghouse remove most of the
                               particulates in the gas stream from the dryer.
                               Vapors from the cyclone separator are cooled
                               in a venturi scrubber, counter-current washer,
                               and chiller section before they are treated in a
                               vapor-phase carbon adsorption system.  The
                               liquid   residues   from  the  system  are
                               centrifuged, filtered, and passed through two
                               activated carbon beds arranged in series.

                               By-products from  the DAVES  treatment
                               include: (1) approximately 96 to 98 percent of
                               solid waste feed as clean, dry solid; (2) a small
                               quantity  of centrifuge  sludge  containing
                               organics;  (3)  a  small  quantity  of  spent
                               adsorbent carbon;  (4) wastewater that may
                               need  further  treatment;   and  (5)  small
                               quantities of baghouse and cyclone dust.
Duty
W»«
T«nk
»
Coxrifute
I
                                                        Ccxorifuge Gate
                            Figure 1. Process flow diagram.
   Source: The Superfund Innovative Technology Evaluation Program-  Technoloev Profiles
         EPA/540/5-90/006 (1990).

                                      3-16

-------
WASTE APPLICABILITY:

This  technology can  remove volatile and
semivolatile  organics,   including
polychlorinated   biphenyls   (PCBs),
polynuclear aromatic hydrocarbons (PAHs),
and   pentachlorophenol   (PCP),   volatile
inorganics  (tetraethyl  lead),  and  some
pesticides from soil, sludge, and sediment, In
general, the process treats waste containing
less   than   5  percent   total   organic
contaminants  and 30  to 90 percent solids.
Nonvolatile inorganic contaminants (such as
metals) in the waste feed do not inhibit the
process but are not treated.
STATUS:

EPA is currently selecting a demonstration
site for this process.  The wastes preferred
for the demonstration are harbor or river
sediments containing  at  least SO  percent
solids and contaminated with PCBs and other
volatile or semivolatile organics.  Soil with
these characteristics may also be acceptable.
About 300 tons of waste are needed for a
two-week test.   The demonstration may
potentially   be   held   at  the   selected
demonstration   site  or   wastes  may  be
transported to  a facility in Arizona  that is
owned  by  the  developer.    Major  test
objectives are  to  evaluate feed  handling,
decontamination of solids, and treatment of
gases generated by the process.
FOR FURTHER INFORMATION:

EPA Project Manager
Laurel Staley
U.S. EPA
Risk Reduction Engineering LAboratory
26 West Martin Luther King Drive
Cincinnati, Ohio 45268
513-569-7863
FTS: 684-7863

Technology Developer Contact
William C. Meenan
Recycling Sciences International, Inc.
30 South Wacker Drive
Suite 1420
Chicago, IL  60606
312-559-0122
November 1990
                                         3-17

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    3.15
EXHIBIT 8  - ENGINEERING BULLETIN:  THERMAL DESORPTION
TREATMENT
                            United States
                            Environmental Protection
                            Agency
                                    Office of Emergency and
                                    Remedial Response
                                    Washington, DC 20460
                            Superfund
                                    EPA/540/2-91/008
Office of
Research and Development
Cincinnati, OH 45268
May 1991
 &EPA
         Engineering Bulletin
         Thermal  Desorption Treatment
 Purpose

    Section 121(b) of the Comprehensive Environmental Re-
 sponse, Compensation, and Liability Act (CERCLA) mandates
 the Environmental Protection Agency (EPA) to select remedies
 that "utilize permanent solutions and alternative treatment
 technologies or resource recovery technologies to the maxi-
 mum  extent practicable" and to prefer remedial actions in
 which treatment "permanently and significantly reduces the
 volume, toxicity, or mobility of hazardous substances, pollut-
 ants and  contaminants as a principal element."  The  Engi-
 neering Bulletins are a series of documents that summarize
 the latest information available on selected treatment and site
 remediation technologies and related issues.  They  provide
 summaries of and references for the latest information to help
 remedial project managers, on-scene coordinators, contrac-
 tors, and other site cleanup managers understand the type of
 data and site characteristics needed to evaluate a technology
 for potential applicability to their Superfund or other hazard-
 ous waste site.  Those documents  that describe individual
 treatment technologies focus on remedial investigation scoping
 needs.  Addenda will  be issued periodically to update the
 original bulletins.
Abstract

    Thermal  desorption  is an  ex  situ  means to  physically
separate volatile and some semivolatile contaminants from
soil, sediments, sludges, and filter cakes. For wastes contain-
ing up to 10%  organics  or less, thermal desorption can be
used alone for site remediation.  It also may find applications
in conjunction with other technologies or be appropriate to
specific operable units at a site.

    Site-specific treatability studies  may be  necessary to
document the applicability and performance  of a thermal
desorption system. The EPA contact indicated  at the end of
this bulletin can assist in the definition of other contacts and
sources of information necessary for such treatability studies.

    Thermal desorption is applicable to organic wastes and
generally is not used for treating metals and other inorganics
Depending on the specific thermal desorption vendor se-
lected,  the technology heats contaminated media between
200-1000°F, driving off  water  and volatile contaminants.
                                      Offgases may be  burned  in an afterburner, condensed to
                                      reduce the volume to be  disposed, or captured by carbon
                                      adsorption beds.

                                          Commercial-scale units exist and are in operation. Ther-
                                      mal desorption has been selected at approximately fourteen
                                      Superfund sites [1]* [2]. Three Superfund Innovative Technol-
                                      ogy Evaluation demonstrations are planned for the next year.

                                          The final determination of the lowest cost alternative will
                                      be more site-specific than process equipment dominated.
                                      This bulletin provides information on the technology applica-
                                      bility, limitations, the types of residuals produced, the latest
                                      performance data, site requirements, the status of the tech-
                                      nology, and sources for further information.
                                      Technology Applicability

                                         Thermal desorption has been proven effective in treating
                                      contaminated soils, sludges, and various filter cakes. Chemi-
                                      cal contaminants for  which  bench-scale through full-scale
                                      treatment data exist include primarily volatile organic com-
                                      pounds (VOCs), semivolatiles, and even higher boiling point
                                      compounds,  such  as polychlorinated biphenyls (PCBs)
                                      [3][4][5][6].  The technology is not  effective in separating
                                      inorganics from the contaminated medium. Volatile metals,
                                      however, may be removed by higher temperature thermal
                                      desorption systems.

                                         Some metals may be volatilized by the thermal desorp-
                                      tion process as the contaminated medium is heated.  The
                                      presence of chlorine in the waste can also significantly affect
                                      the volatilization of some metals, such as lead. Normally the
                                      temperature of the medium achieved by the process does not
                                      oxidize the metals present in the contaminated medium [7, p.
                                      85].

                                         The process is applicable for the separation of organics
                                      from refinery wastes, coal tar wastes, wood-treating wastes,
                                      creosote-contaminated soils, hydrocarbon-contaminated soils,
                                      mixed (radioactive and hazardous) wastes, synthetic rubber
                                      processing wastes, and paint wastes [8, p. 2][4][9].

                                         Performance data presented in this bulletin should not be
                                      considered directly applicable to other Superfund sites.  A
                                      number of variables, such as the specific mix and distribution
' [reference number, page number]
                                                3-18
                                                                                      Printed on Recycled Paper

-------
                        Table 1
            RCRA Codes for Wastes Treated
                by Thermal Desorption
   Wood Treating Wastes                      K001
   Dissolved Air Flotation (DAF) Float             K048
   Slop Oil Emulsion Solids                     K049
   Heat Exchanger Bundles Cleaning Sludge       K050
   American Petroleum Institute (API)
     Separator Sludge                        K051
   Tank Bottoms (leaded)                      K052
                        Table 2
         Effectiveness of Thermal Desorption on
         General Contaminant Groups for Soil,
          Sludge, Sediments, and Filter Cakes


Contaminant Croups



"c
1
6





u
C
O
s»
o
.c

2
u
Q
tt
Halogenated volatiles
Halogenated semivolatiles
Nonhalogenated volatiles
Nonhalogenated semivolatiles
PCBs
Pesticides
Dioxins/Furans
Organic cyanides
Organic corrosives
Volatile metals
Nonvolatile metals

Asbestos

Radioactive materials
Inorganic corrosives
Inorganic cyanides
Oxidizers
Reducers

Effectiveness
Seal- Filter
Soil Sludge merits Cakes








a
•
a

a

a
a
a
a
a

T
T
T
V
T
V
V
T
a
T
a

a

a
a
a
a
a

T
T
T
T
T
T
T
T
a
T
a

a

a
a
a
a
a






T
T
T
a
T
a

a

a
a
a
a
a

• Demonstrated Effectiveness Successful treatability test at some scale
completed
T Potential Effectiveness. Expert opinion that technology will work
3 No Expected Effectiveness. Expert opinion that technology will not
work
of contaminants,  affect  system  performance.   A thorough
characterization of the site and a well-designed and con-
ducted treatability study are highly recommended.

    Table 1 lists the codes for the specific Resource Conserva-
tion and Recovery Act (RCRA) wastes that have been treated
by this technology [8, p. 2][4][9]. The indicated codes were
derived from vendor  data where the objective was to deter-
mine thermal desorption effectiveness for these specific in-
dustrial wastes.  The  effectiveness of thermal desorption on
general contaminant  groups for various matrices is shown in
Table 2. Examples of constituents within contaminant groups
are provided in "Technology Screening Guide For Treatment
of CERCLA Soils and Sludges" [7, p. 10]. This table is based on
the current  available information  or  professional judgment
where no information was available. The proven effectiveness
of the technology for a particular site or waste does not ensure
that it will  be effective at all sites or that the treatment
efficiencies achieved will be acceptable at other sites. For the
ratings used for this table, demonstrated effectiveness means
that, at some scale, treatability was tested to show the tech-
nology was effective for that particular contaminant and me-
dium.  The ratings of potential effectiveness or no expected
effectiveness are both based upon expert judgment.  Where
potential effectiveness is indicated, the technology is believed
capable of successfully  treating the contaminant group in a
particular medium. When the technology is not applicable or
will probably not work for a particular combination of con-
taminant group  and  medium, a no expected  effectiveness
rating is given. Another source of general observations and
average removal efficiencies for different treatability groups is
contained in the Superfund Land Disposal Restrictions (LDR)
Guide #6A,  "Obtaining a Soil and Debris Treatability Variance
for  Remedial Actions,"  (OSWER Directive 9347.3-06FS, Sep-
tember 1990)  [10] and Superfund LDR Guide #6B, "Obtain-
ing a Soil and Debris  Treatability  Variance for  Removal Ac-
tions," (OSWER  Directive  9347.3-06BFS,  September 1990)
[11].


Limitations

    The primary technical factor affecting thermal desorption
performance is the maximum bed temperature achieved. Since
the basis of the process is physical removal from the medium
by volatilization,  bed temperature  directly determines which
organics will be removed.

    The contaminated medium must contain at least 20 per-
cent solids to facilitate  placement of the waste  material into
the desorption equipment  [3,  p. 9].  Some systems specify a
minimum of 30 percent solids  [12, p. 6].

    As the medium is heated and passes through the kiln or
desorber, energy is lost in heating  moisture contained in the
contaminated soil.  A very high moisture content can result in
low contaminant volatilization or a need to recycle the soil
through the desorber.   High  moisture content, therefore,
causes increased  treatment costs.

    Material handling of soils that are tightly aggregated or
largely clay, or that contain rock fragments or particles greater
than 1-1.5 inches can result in poor processing  performance
due to caking.  Also, if a high fraction of fine silt or clay exists
in the matrix, fugitive dusts will be generated [7, p. 83] and a
greater dust loading will be placed on the downstream  air
pollution control equipment [12, p. 6].

    The treated medium will typically contain  less than 1
percent moisture.  Dust can easily form in the transfer of the
treated medium from the desorption unit, but can be mitigated
by water sprays.   Normally, clean water from  air pollution
control devices can be used for this purpose.

    Although volatile organics are the primary  target of the
thermal desorption technology, the total organic loading is
limited by some systems to up to 10 percent or less [13, p. II-
                                          3-19
                                                       Engineering Bulletin:  Thermal Desorption Treatment

-------
 30]. As in most systems that use a reactor or other equipment
 to process wastes, a medium exhibiting a very high pH (greater
 than 11) or very low pH (less than 5) may corrode the system
 components [7, p. 85].

    There is evidence with some system configurations that
 polymers may foul and/or plug heat transfer surfaces [3, p. 9].
 Laboratory/field tests of thermal  desorption  systems have
 documented the deposition of insoluble brown tars (presum-
 ably phenolic tars) on internal system components  [14, p.
 76].
    High concentrations of inorganic  constituents  and/or
 metals will likely not be effectively treated by thermal desorp-
 tion.  The maximum bed temperature and the presence of
 chlorine can result in volatilization of some inorganic constitu-
 ents in the waste, however.

 Technology Description

    Thermal desorption is any of a number of  processes that
 use either indirect or direct heat exchange to vaporize organic
 contaminants from soil or sludge.  Air, combustion gas,  or
 inert gas is used as the transfer medium for  the vaporized
 components.  Thermal desorption systems are  physical sepa-
 ration processes and are not  designed to provide high levels
 of organic destruction, although the higher temperatures of
 some systems will result in localized oxidation and/or pyroly-
 sis. Thermal desorption is not incineration, since the destruc-
 tion of organic  contaminants is not the desired result.  The
 bed temperatures achieved  and residence  times  designed
 into thermal desorption  systems will volatilize selected con-
 taminants, but typically not oxidize or destroy them.  System
 performance is typically measured by comparison of untreated
 soil/sludge contaminant levels with those of the processed
 soil/sludge. Soil/sludge is typically heated to 200 - 1000° F,
 based on the thermal desorption system selected.

    Figure 1 is a general  schematic of the thermal desorption
 process.
    Waste material handling  (1) requires excavation of the
contaminated soil or sludge or delivery of filter cake to the
system.  Typically,  large objects greater than 1.5 inches are
screened from the medium and rejected. The medium is then
delivered  by gravity to  the desorber inlet or conveyed  by
augers to a feed hopper [8, p.  1].

    Significant system variation exists in the desorption step
(2). The dryer can  be an indirectly fired rotary asphalt kiln, a
single (o' set of) internally heated screw auger(s), or a series of
externally heated distillation chambers.  The latter process
uses annular augers to move the medium from one volatiliza-
tion zone to the next. Additionally, testing and demonstration
data exist for a fluidized-bed desorption system [12].

    The waste is intimately contacted with a heat transfer
surface, and highly volatile components (including water) are
driven off. An inert gas, such as nitrogen, may be injected in a
countercurrent sweep stream  to prevent contaminant com-
bustion and to vaporize and remove the contaminants [8, p.
1][4].  Other systems simply direct the hot gas stream from
the desorption unit [3, p. 5][5].

    The actual bed temperature and residence time are the
primary factors affecting performance in thermal desorption.
These parameters are controlled in the desorption unit by
using  a series of increasing temperature zones [8, p. 1 ],  mul-
tiple passes of the medium through the desorber where the
operating temperature  is  sequentially  increased, separate
compartments where the  heat transfer fluid  temperature is
higher, or sequential processing into higher temperature zones
[15][16].  Heat transfer fluids used to date include hot com-
bustion gases, hot oil, steam, and molten salts.

    Offgas from desorption is typically processed (3) to re-
move particulates. Volatiles in the offgas may be burned in an
afterburner,  collected on activated  carbon, or recovered  in
condensation equipment. The selection of the gas treatment
system will depend on the concentrations of the contaminants,
cleanup standards, and  the economics of the offgas treat-
ment system(s) employed.
                                                      Figure 1
                                     Schematic Diagram of Thermal Desorption
^
r
Gas Treatment
System
(3)

L-*,
	 to-





Mat
Han
(

enal
i
— to-


Desorption
(2)


J 1
\
Tre
                                                                               Clean Offgas
                                                                                     Spent
                                                                                     Carbon
                                                                                 Concentrated Contaminants

                                                                                  Water
                                                                       Medium
Engineering Bulletin: Thermal Desorption Treatment
                                                                     3-20

-------
Process Residuals

    Operation of thermal desorption systems typically cre-
ates  up to six  process  residual streams:  treated medium,
oversized medium rejects, condensed contaminants and wa-
ter, paniculate control system dust, clean offgas, and spent
carbon (if used).   Treated medium, debris, and oversized
rejects may be suitable for return onsite.

    Condensed water may be used as a dust suppressant for
the treated medium.  Scrubber purge water can  be purified
and  returned to the site wastewater treatment facility (if
available), disposed to the sewer [3, p. 8] [8, p. 2] [4, p. 2], or
used for rehumidification and cooling of the hot, dusty me-
dia.   Concentrated,  condensed organic contaminants are
containerized for further treatment or recovery.

    Dust collected from  paniculate control devices may be
combined with the treated medium or, depending on analy-
ses for carryover contamination, recycled through  the  des-
orption unit.

    Clean offgas is released to the atmosphere. If used, spent
carbon may be recycled by the original supplier or other such
processor.

Site  Requirements

    Thermal desorption systems are transported typically on
specifically adapted flatbed semitrailers.  Since most systems
consist of three components (desorber, particulate control,
and gas treatment), space requirements on site are typically
less than 50 feet by 150 feet, exclusive of materials handling
and decontamination areas.

    Standard 440V, three-phase electrical service is needed.
Water must be  available at the site  The quantity of water
needed is vendor and site specific.

    Treatment of contaminated soils or other waste materials
require that a site safety plan be developed to provide for
personnel protection and special handling measures. Storage
should be provided to hold the process product streams until
they  have been tested to determine their  acceptability for
disposal or release. Depending upon the Site,  a  method to
store  waste that has  been prepared for treatment may be
necessary. Storage capacity will depend on waste volume.
    Onsite analytical equipment capable of determining site-
specific organic compounds for performance assessment make
the operation more efficient and provide better information
for process control.
Performance Data

    Several thermal  desorption vendors report performance
data for  their respective systems  ranging  from laboratory
treatability studies  to  full-scale operation at designated
Superfund sites [17][9][18]. The quality of this information
has not been determined.  These data are  included as a
general guideline to the performance of thermal desorption
equipment, and may not be directly transferable to a specific
Superfund site. Good  site characterization and treatability
studies are essential  in further  refining and  screening the
thermal desorption technology.

    Chem Waste Management's (CWM's) X*TRAX™ System
has been tested at laboratory and pilot scale.  Pilot tests were
performed at  CWM's Kettleman Hills  facility  in California.
Twenty tons  of PCB- and  organic-contaminated soils were
processed through the 5 TPD  pilot system. Tables 3 and 4
present  the  results of PCB separation from  soil and total
hydrocarbon emissions from the system, respectively [4].

    During a non-Superfund project tor the Department of
Defense, thermal desorption was used in a full-scale demon-
stration at the Tinker Air Force Base in Oklahoma. The success
of this project led to the patenting  of the process by Weston
Services,  Inc.   Since then, Weston has applied its low-tem-
perature thermal treatment (UP) system to various contami-
nated soils at bench-scale through full-scale projects [19].
Table 5 presents a synopsis of  system and performance data
for a full-scale treatment of soil contaminated with No. 2 fuel
oil and gasoline at a site in Illinois.

    Canonie  Environmental has  extensive performance data
for its Low Temperature Thermal Aeration (LTTASM) system at
full-scale operation 05-20 cu. yds. per hour).  The LTTASM has
been applied at the McKm  (Maine), Ottati and Goss (New
Hampshire) and Cannon Engineering Corp. (Massachusetts)
Superfund sites  Additionally,  the  LTTASM has been used at
the privately-funded site in South  Kearney (New Jersey). Table
                       Table 3
               PCB Contaminated Soils
                   Pilot X'TRAX™ [4]
Matrix
Clay
Silt>' Clay
Clay
Sandy
Clay
Feed
(ppm)
5,000
2,800
1,600
1,480
630
Product
(ppm)
24
19
48
8.7
17
Removal ]
(%)
99.3
995
99.7
99.1
97.3
                       Table 4
                    Pilot X'TRAX™
           TSCA Testing - Vent Emissions [4]
Total Hydrocarbons
(ppm-V)
I Before \
Carbon
1,320
' 1,031 ,
530 '
2,950
2,100
After
Carbon
57
72
35
170 '
180 !
Removaf
95.6
93.0
93.3
94.2
91 4
voc
(Ibs/day)
0.02
0.03
0.01
0.07
008
PCB*
(mg/m3)
<0.00056
<0.00055
<0.00051
<0.00058
<0.00052
                                                                •Note: OSHA permits 0.50 mg/m3 PCB (1254) for 8-hr
                                                                  exposure.
                                            3_2i       Engineering Bulletin:  Thermal Desorption Treatment

-------
 6 presents a summary of Canonic LTTA5" data [5]. The Can-
 non Engineering (Mass) site, which was not included in Table
 6, successfully treated a total of 11,330 tons of soil, containing
 approximately 1803 Ibs. of VOC [20].

     T.D.I. Services, Inc. has demonstrated its HT-5 Thermal
 Distillation Process at pilot- and full-scale for a variety of RCRA-
 listed and other wastes that were prepared to simulate Ameri-
 can Petroleum Institute (API)  refinery sludge [8].  The com-
 pany has conducted pilot- and full-scale testing with the API
sludge to demonstrate the system's ability to meet Land Ban
Disposal requirements for K048 through K052 wastes.  Inde-
pendent evaluation by Law Environmental confirms that the
requirements were met,  except for TCLP  levels of nickel,
which were blamed on a need to "wear-in" the HT-5 system
    Remediation Technologies, Inc. (ReTec) has performed
numerous tests  on RCRA-listed  petroleum  refinery wastes.
Table 7 presents results from treatment of  refinery vacuum
                       Table 5
            Full-Scale Performance Results
                 for theLP System [19]
Contaminant
Benzene
Toluene
Xylene
Ethyl benzene
Napthalene
Carcinogenic
Priority PNAs
Non-carcinogenic
Priority PNAs
Soil Range
(PPV
1000
24000
110000
20000
4900

<6000

890-6000
Treated Range
(PPV
5.2
5.2
<1.0
4.8
<330

<330-590

<330-450
Range of
Removal
Efficiency
99.5
99.9
>99.9
99.9
>99.3

<90.2-94.5

<62.9-94.5
                       Table 6
            Summary Results of the LTTA*"
             Full-Scale Cleanup Tests [5]
Site
S. Kearney
McKin
Ottati &
Goss
Processed
16000 tons
>9500 cu yds
2000 cu yds
4500 cu yds
Contam-
inant
VOCs
PAHs
VOCs
PAHs
VOCs
Soil
(ppm)
1 77.0 (avg.)
35.31 (avg.)
ND-3310
1500 (avg.)
Treated
(ppm)
0.87 (avg.)
10.1 (avg.)
ND-0.04
<10
<0.2 (avg.)
                       Table 7
           ReTec Treatment Results-Refinery
              Vacuum Filter Cake (A) [3]
                       Tables
          ReTec Treatment Results-Creosote
               Contaminated Clay [3]
Compound
Naphthalene
Acenaphthylene
Acenaphthene
Fluorene
Phenanthrene
Anthracene
Fluoranthrene
Pyrene
Benzo(b)anthracene
Chrysene
Benzo(b)fluoranthene
Benzo(k)fluoranthene
Benzo(a)pyrene
Dibenz(ab)antracene
Benzo(ghi)perylene
lndeno(1 23-cd)pyrene
Treatment Temperature:
Original
Sample
(ppm)
98.9
>99.3
>96.6
>99.8
>99.9
97.5
>99.9
97.9











98.4
98.9
97.8
96.6
96.6



Compound
Naphthalene
Acenaphthylene
Acenaphthene
Fluorene
Phenanthrene
Anthracene
Fluoranthrene
Pyrene
Benzo(b)anthracene
Chrysene
Benzo(b)fluoranthene
Benzo(k)fluoranthene
Benzo(a)pyrene
Dibenzo(ab)anthracene
Benzo(ghi)perylene
lndeno(1 23-cd)pyrene
Treatment Temperature:

Original
Sample
(ppm)
1321
<0.1
293
297
409
113
553
495
59
46
14
14
15
<0.1
7
3
500°F

Treated Removal
Sample Efficiency
(ppm) (%)
<0.1 >99.9
<0.1
<0.1 >99.96
<0.1 >99.96
1.6 99.6
<0.1 >99.7
1.5 99.7
2.0 99.6
<0.1 >99.99
<0.1 >99.8
2.5 82.3
<0.1 >99.8
<0.1 >99.9
<0.1
<0.1 >99.4
<0.1 >99.3


Engineering Bulletin: Thermal Desorption Treatment
     3-22

-------
                        Table 9
           ReTec Treatment Results-Coal Tar
                Contaminated Soils [3]
Compound
Benzene
Toluene
Ethylbenzene
Xylenes
Naphthalene
Fluorene
Phenarithrene
Anthracene
Fluoranthrene
Pyrene
Benzo(b)anthracene
Chrysene
Benzo(b)fluoranthene
Benzo(k)fluoranthene
Benzo(a)pyrene
Benzo(ghi)perylene
lndeno(123-cd)pyrene
Original
Sample
(ppm)
1.7
2.3
1.6
6.3
367
114
223
112
214
110
56
58
45
35
47
24
27
Treated
Sample
(ppm)
<0.1
<0.1
<0.1
<0.3
<1.7
<0.2
18
7.0
15
11
<1.4
3.7
<1.4
<2.1
<0.9
<1.1
<6.2
Removal
Efficiency
(%)
>94
>95
>93
>95
>99
>99
91.9
93.8
93.0
90.0
>97
93.6
>97
>94
>98
>95
>77
  Treatment Temperature:  450°F
filter cake.  Tests with creosote-contaminated clay and coal
tar-contaminated soils showed significant removal efficiencies
(Tables  8 and 9).  All data were  obtained through use of
ReTec's  100 Ib/h pilot scale unit processing actual industrial
process  wastes [3].

    Recycling Sciences International, Inc. (formerly American
Toxic Disposal, Inc.) has tested its  Desorption and Vaporiza-
tion Extraction System (DAVES), formerly called the Vaporiza-
tion Extraction System (VES),  at Waukegan Harbor, Illinois.
The pilot-scale test  demonstrated PCB removal from material
containing up to 250 parts per million (ppm) to levels less
than 2 ppm [12].

    RCRA LDRs that require treatment of wastes to best dem-
onstrated available technology (BOAT) levels prior to  land
disposal may sometimes be determined to be applicable or
relevant and appropriate requirements for CERCLA response
actions.   Thermal desorption  can  produce a treated waste
that meets treatment levels set by BOAT but may not reach
these treatment levels in  all cases.  The ability  to  meet re-
quired treatment levels is dependent upon the specific waste
constituents and the  waste matrix.  In cases where thermal
desorption  does not meet these levels, it still may, in certain
situations,  be  selected  for  use at  the  site if a treatability
variance establishing alternative treatment levels is obtained.
Treatability variances  are justified for handling complex soil
and debris matrices. The following guides describe when and
how to seek a  treatability variance for soil  and debris:
Superfund  LDR Guide #6A, "Obtaining a Soil and Debris
Treatability Variance for Remedial Actions" (OSWER Directive
9347.3-06FS, September 1990) [10], and Superfund LDR Guide
#6B, "Obtaining a Soil and Debris  Treatability Variance for
Removal Actions" (OSWER Directive 9347.3-06BFS, Septem-
ber 1990) [11 ].   Another approach could be to use other
treatment techniques  in  series with thermal desorption  to
obtain desired treatment levels.

Technology Status

    Significant theoretical research is ongoing [22][23],  as
well as direct demonstration of thermal desorption through
both treatability testing and full-scale cleanups.

    A successful pilot-scale demonstration of Japanese soils
"roasting" was conducted in 1980 for the recovery of mercury
from highly contaminated (up to 15.6 percent) soils at a plant
site in Tokyo.  The high concentration of mercury made
recovery and refinement to commercial grade (less than 99.99
percent purity) economically feasible [24].

    In this country, thermal desorption technologies are the
selected remedies for one or more operable units at fourteen
Superfund sites.   Table 10 lists each site's location, primary
contaminants, and present status [1][2].

    Most of the hardware components of thermal desorption
are available off the shelf and represent no significant problem
of availability.  The engineering and  configuration  of the
systems are similarly refined, such that once a system is de-
signed full-scale, little or no prototyping or redesign is required.

    On-line availability of the full-scale systems described in
this bulletin is not documented.  However, since the ex situ
system can be operated in batch mode, it is expected that
component failure can be identified and spare components
fitted quickly for minimal downtime.

    Several vendors have documented processing costs per
ton of feed processed. The overall range varies from $80 to
$350 per ton processed [6][4, p. 12][5][3, p. 9].  Caution is
recommended in using costs out of context because the base
year of the estimates vary. Costs also are highly variable due
to the quantity of waste to be processed, term of the reme-
diation contract,  moisture content, organic constituency of
the contaminated medium, and cleanup  standards to  be
achieved.  Similarly, cost estimates should include such items
as preparation of Work  Plans, permitting, excavation, pro-
cessing itself,  QA/QC verification of treatment performance,
and reporting of data.
EPA Contact

    Technology-specific questions regarding thermal desorp-
tion may be directed to:
    Michael Gruenfeld
    U.S. Environmental Protection Agency
    Risk Reduction Engineering Laboratory
    Releases Control Branch
    2890 Woodbridge Ave.
    Bldg. 10(MS-104)
    Edison, N| 08837
    FTS 340-6625 or (908) 321-6625
                                             3_23     Engineering Bulletin: Thermal Desorption Treatment

-------
                                                   Table 10
                       Superfund Sites Specifying Thermal Desorption as the Remedial Action
Site Location Primary Contaminants Status
Cannon Engineering
(Bridgewater Site)
McKin
Ottati & Goss
Wide Beach
Metaltec/Aerosystems
Caldwell Trucking
Outboard Marine/
Waukegan Harbor
Reich Farms
Re-Solve
Waldick Aerospace
Devices
Wamchem
Fulton Terminals
Bridgewater, MA(1)
McKin, ME(1)
New Hampshire (1 )
Brandt, NY (2)
Franklin Borough, N] (2)
Fairfield, NJ (2)
Waukegan Harbor, IL (5)
Dover Township, N) (02)
North Dartmouth, MA (1 )
New jersey (2)
Burton, SC (4)
Fulton, NY (2)
Stauffer Chemical Cold Creek, AL (4)
Stauffer Chemical Le Moyne, AL (4)
VOCs (Benzene, TCE &
Vinyl Chloride)
Project completed 1 0/90
VOCs (TCE, BTX) ! Proiect completed 2/87
VOCs (TCE; PCE; 1,2-DCA,
and Benzene)
PCBs
TCE and VOCs
VOCs CTCE, PCE, and TCA)
PCBs
VOCs and Semivolatiles
'PCBs
TCE and PCE
BTX and SVOCs
(Naphthalene)
VOCs (Xylene, Styrene, TCE,
Ethylbenzene, Toluene) and
some PAHs
Project completed 9/89
In design
• pilot study available 5/91
In design
• remedial design complete
• remediation starting Fall '91
In design
In design
• treatability studies complete
Pre-design
In design
• pilot study June/July '91
In design
In design
• pilot study available 5/91
Pre-design
VOCs and pesticides Pre-design
VOCs and pesticides ; Pre-design
Acknowledgements

    This bulletin was prepared for the U.S. Environmental
Protection  Agency,  Office  of  Research and Development
(ORD), Risk Reduction Engineering Laboratory  (RREL), Cin-
cinnati, Ohio, by Science Applications International Corpora-
tion (SAIC) under contract no. 68-C8-0062.  Mr.  Eugene
Harris served as the EPA Technical Project Monitor. Mr. Gary
Baker (SAIC) was the Work Assignment Manager and author
of this bulletin.  The  author is especially grateful to Mr. Don
Oberacker, Ms. Pat Lafornava, and Mr. Paul de Percin of EPA,
RREL, who  have contributed significantly by serving as tech-
nical consultants during the development of this document.
    The following other  Agency and contractor personnel
have contributed their time and comments by participating in
the expert review meetings and/or peer reviewing the docu-
ment:
   Dr. James Cudahy
   Mr. James Cummings
   Dr. Steve Lanier
                          Focus Environmental, Inc.
                          EPA-OERR
                          Energy and Environmental
                          Research Corp.
Ms. Evelyn Meagher-Hartzell  SAIC
Mr. James Rawe             SAIC
Ms. Tish Zimmerman        EPA-OERR
Engineering Bulletin:  Thermal Desorption Treatment
                                                              3-24

-------
                                             REFERENCES
1.   Innovative Treatment Technologies: Semi-Annual Status
    Report, EPA/540/2-91/001, U.S. Environmental Protec-
    tion Agency, Technology Innovation Office, Jan. 1991.
2.   Personal communications with various EPA Regional
    Project Managers, April, 1991.
3.   Abrishamian, Ramin.  Thermal Treatment of Refinery
    Sludges and Contaminated Soils. Presented at Ameri-
    can Petroleum Institute, Orlando, Florida, 1990.
4.   Swanstrom, C, and C. Palmer. X*TRAX™ Transportable
    Thermal Separator for Organic Contaminated Solids.
    Presented at Second Forum on Innovative Hazardous
    Waste Treatment Technologies: Domestic and Interna-
    tional, Philadelphia, Pennsylvania, 1990.
5.   Canonic Environmental Services Corp, Low Temperature
    Thermal Aeration (LTTASM) Marketing Brochures, circa
    1990.
6.   Nielson, R., and M. Cosmos.  Low Temperature Thermal
    Treatment (LT3) of Volatile Organic Compounds from
    Soil:  A Technology Demonstrated. Presented at the
    American Institute of Chemical Engineers Meeting,
    Denver, Colorado, 1988.
7.   Technology Screening Guide for Treatment of CERCLA
    Soils and Sludges. EPA/540/2-88/004, U.S. Environmen-
    tal Protection Agency, 1988.
8.   T.D.I. Services, Marketing Brochures, circa 1990.
9.   Cudahy,)., and W. Troxler.  1990. Thermal Remedia-
    tion Industry Update - II. Presented at Air and Waste
    Management Association Symposium on Treatment of
    Contaminated Soils, Cincinnati, Ohio, 1990.
10. Superfund LDR Guide #6A: (2nd Edition) Obtaining a
    Soil and  Debris Treatability Variance for Remedial
    Actions.  Superfund Publication 9347.3-06FS, U.S.
    Environmental Protection Agency, 1990.
11. Superfund LDR Guide #6B: Obtaining a Soil and Debris
    Treatability Variance for Removal Actions. Superfund
    Publication 9347.3-06BFS, U.S. Environmental Protec-
    tion Agency, 1990.
12. Recycling Sciences International, Inc., DAVES Marketing
    Brochures, circa 1990.
13. The Superfund Innovative Technology Evaluation
    Program — Progress and Accomplishments Fiscal Year
    1989, A Third Report to Congress, EPA/540/5-90/001,
    U.S. Environmental Protection Agency, 1990.
                14.  Superfund Treatability Clearinghouse Abstracts.  EPA/
                    540/2-89/001, U.S. Environmental Protection Agency,
                    1989.
                15.  Soil Tech, Inc., AOSTRA - Taciuk Processor Marketing
                    Brochure, circa 1990.
                16.  Ritcey, R., and F. Schwartz. Anaerobic Pyrolysis of
                    Waste Solids and Sludges — The AOSTRA Taciuk Process
                    System.  Presented at Environmental Hazards Confer-
                    ence and Exposition, Seattle, Washington, 1990.
                17.  The Superfund Innovative Technology Evaluation
                    Program: Technology Profiles. EPA/540/5-89/013, U.S.
                    Environmental Protection Agency, 1989.
                18.  Johnson, N., and M. Cosmos. Thermal Treatment
                    Technologies for Haz Waste Remediation. Pollution
                    Engineering, XXI(II): 66-85,1989.
                19.  Weston Services, Inc, Project Summaries (no date).
                20.  Canonic Environmental Services Corporation, Draft
                    Remedial Action Report - Cannons Bridgewater
                    Superfund Site, February 1991.
                21.  Onsite Engineering Report for Evaluation  of the HT-5
                    High Temperature Distillation System for Treatment of
                    Contaminated Soils — Treatability Test Results for a
                    Simulated K051 API Separator Sludge, Vol 1: Executive
                    Summary, Law Environmental,  1990.
                22.  Lighty,)., et al. The Cleanup of Contaminated Soil by
                    Thermal Desorption.  Presented at Second International
                    Conference on New Frontiers for Hazardous Waste
                    Management. EPA/600/9-87/018f, U.S. Environmental
                    Protection Agency, 1987. pp. 29-34.
                23.  Fox, R., et al.  Soil  Decontamination by Low-Tempera-
                    ture Thermal Separation. Presented at the DOE Model
                    Conference, Oak Ridge, Tennessee, 1989.
                24.  Ikeguchi, T., and S. Gotoh. Thermal Treatment of
                    Contaminated Soil with Mercury. Presented at Demon-
                    stration of Remedial Action Technologies for Contami-
                    nated Land and Groundwater, NATO/CCMS Second
                    International Conference, Bilthoven, the Netherlands,
                    1988.  pp. 290-301.
8
3-25      Engineering Bulletin: Thermal Desorption Treatment

-------
3.16          KEY REFERENCE LIST - THERMAL DESORPTION


McCabe, M. and Abrishamian, R., Thermal Treatment of Oily Soils and Sludges, pp.
       549 - 552. In Superfund '90, Proceedings from llth Annual National Conference,
       Hazardous Materials Control Research Institute, Silver Spring, MD.

Noland, N.W.,  McDevitt, N., and Loltuniak, D., 1985: Low Temperature Thermal
       Stripping of Volatile Organic Compounds from Soils. U.S. Army Toxic and
       Hazardous Materials Agency, Aberdeen Proving Ground, Edgewood, MD.

U.S. Environmental Protection Agency, 1990.  In Situ Steam/Hot Air Stripping, Toxic
       Treatment, Inc., EPA/540/M5-90/003.

U.S. Environmental Protection Agency, 1990.  Inventory  of Treatability Study Vendors,
       Volume 1, EPA/540/2-90/003a.

U.S. Environmental Protection Agency, 1990.  Second Forum on Innovative Treatment
       Technologies,  Domestic and International, Philadelphia, PA, May 15-17,  1990,
       EPA/540/2-90/006 (Abstracts) or EPA/540/2-90/010 (Technical Papers).
Note:  A more comprehensive bibliography is being developed.
                                         3-26

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                            TABLE OF CONTENTS

Section                                                                  Pace

4.0  SOIL WASHING	 4-1

      4.1   TECHNOLOGY DESCRIPTION	 4-1

      4.2   TECHNOLOGY STATUS	 4-2

      4.3   APPLICATIONS  	 4-2

      4.4   TECHNOLOGY STRENGTHS 	 4-2

      4.5   TECHNOLOGY LIMITATIONS	 4-3

      4.6   POTENTIAL MATERIALS HANDLING REQUIREMENTS	 4-3

      4.7   WASTE CHARACTERISTICS AFFECTING PERFORMANCE  	 4-3

      4.8   EXHIBIT 1 - WASTE CHARACTERISTIC TABLE	 4-4

      4.9   EXHIBIT 2 - DATA FROM THE SEMI-ANNUAL STATUS REPORT	4-5

      4.10  EXHIBIT 3 - INNOVATIVE TREATMENT TECHNOLOGIES - SEMI-
           ANNUAL STATUS REPORT - SEPTEMBER, 1991  	 4-6

      4.11   EXHIBIT 4 - BULLETIN: INNOVATIVE TECHNOLOGY SOIL WASHING 4-9

      4.12  EXHIBIT 5 - SITE TECHNOLOGY PROFILE - BIOTROL	  4-11

      4.13  EXHIBIT 6 - SITE TECHNOLOGY PROFILE - EXCALIBUR
           ENTERPRISES, INC	  4-13

      4.14  EXHIBIT 7 - ENGINEERING BULLETIN: SOIL WASHING
           TREATMENT	  4-15
      4.15  KEY REFERENCE LIST - SOIL WASHING	  4-25

-------
                                   4.0  SOIL WASHING
 4.1
TECHNOLOGY DESCRIPTION
       Soil washing is an aqueous-based technology that, in general, uses mechanical processes to
separate particles that contain contaminants. In this sense, it is a volume reduction or
pretreatment technology. It makes use of the fact that contaminants have a tendency to adhere to
the organic carbon and fine-grained soil fraction (i.e., silt and clay) as opposed to the coarse-
grained mineral fraction (i.e., sand and gravel).  In addition, or in some cases alternatively,
contaminants may be removed from the soil as a result of being solubilized in the wash water.
Surficial contamination is removed from the coarse fraction by abrasive scouring action. The
wash water may be augmented with a basic leaching  agent, surfactant, pH adjustment, or
chelating agent such as ethylene diamine tetra-acetic acid (EDTA) to help remove organics or
heavy metals.  Treated soil is cleaned of any residual additive compounds. The spent wash water
is treated to remove the contaminants prior to recycling back  to the treatment unit.
     Soils containing organics
     and/or inorganics
     Water and extraction
     agents
                     Soil Washing
Clean soil
Sludge/contaminated fines
Waste water
Possible fugitive
air emissions
                                  • Separation and volume
                                   reduction
                                  • Residuals require
                                   subsequent treatment
                                          4-1

-------
4.2           TECHNOLOGY STATUS
                     Through FY 90, soil washing has been selected as a remedial source control
                     technology at 16 Superfund sites, including eight wood preserving sites
                     (PAHs, PCP and metals), one lead battery recycling site, three pesticide
                     sites, one site with VOCs and metals, and two with metals.  It has been
                     selected for one emergency response action.

                     This technology is widely accepted in Europe, especially in Germany, the
                     Netherlands, and Belgium.

                     The Environmental Protection Agency (EPA) has designed and fabricated a
                     Mobile Volume Reduction Unit (VRU) through  the Risk Reduction
                     Engineering Laboratory (RREL) in Edison, New Jersey.  It has a capacity
                     of 100 pounds of soil (dry basis) per hour and consists of process washing
                     equipment and utility support services mounted on two heavy-duty semi-
                     trailers.  It will be available for treatability studies following a shake down
                     and performance testing phase.
4.3           APPLICATIONS
                     Soil washing may be used for a wide variety of organic, inorganic, and
                     reactive contaminants.

                     Because extraction additives are selective, the technology is more
                     appropriate for non-complex wastes contaminated with either metals or
                     organics.

                     Because the technology is primarily a separation and volume reduction
                     process, it is frequently used with other technologies.  For example, soil
                     washing may be used to separate the highly contaminated "fines" for
                     further treatment. Because a much smaller volume needs treatment, the
                     additional technology is more cost effective after the soil-washing step.

                     Soil washing is very effective on sands and gravel.  It is most cost effective
                     when water alone (without additives) is sufficient to achieve cleanup
                     levels.
4.4           TECHNOLOGY STRENGTHS
                     Soil washing is favorably viewed by the public

                     It is a relatively low cost alternative for separating wastes.

                     The technology can utilize a closed treatment system that permits control
                     of ambient volatile emissions.

                     Testing to date indicates the technology can remove volatile organic
                     contaminants with 90 to 99 percent effectiveness and semivolatile organics
                     with 40 to 90 percent effectiveness.
                                            4-2

-------
4.5           TECHNOLOGY LIMITATIONS


              •      Effectiveness is highly dependent on site conditions. This process is
                     relatively ineffective on soils with high silt and clay content.

              •      Washing additives (e.g., chelating agents, solvents, surfactants) may be
                     tailored to site, soil, and contaminant conditions; however, these  may be
                     hazardous, difficult to recover, and interfere with wash water treatment.


4.6           POTENTIAL MATERIALS HANDLING REQUIREMENTS


              •      Excavation is required.

              •      The wastes may be screened to remove debris and large particles.

              •      Large particles may be reduced in size to achieve a  feed size required by
                     the equipment - less than 2 inches in diameter.

              •      The waste material, wash water, and any additives will require mixing to
                     ensure adequate transfer of the contaminants.


4.7           WASTE CHARACTERISTICS AFFECTING PERFORMANCE


              •      Can be limited by complex waste mixtures.

              •      Can be limited by soils with high humic content and fine-grained clay
                     particles.
                                           4-3

-------
4.8
EXHIBIT 1 - WASTE CHARACTERISTIC TABLE
Waste Type:  Soils
Technology:  Soil Washing
   Characteristics
  Impacting Process
      Feasibility
                  Reason for Potential Impact
        Data
     Collection
    Requirements
Unfavorable
separation coefficient
for contaminant

Complex mixtures of
waste types  (e.g.,
metals with  organics)

Variation in waste
composition

Unfavorable soil
characteristics:

• High humic content
• Soil, solvent
  reactions

• Fine particle size
  (silt and clay)

• Clay soil containing
  semivolatiles

Unfavorable washing
fluid characteristics:

• Difficult recovery of
  solvent or  surfactant

• Poor treatability of
  washing fluid

• Reduction of soil
  permeability

• High toxicity of
  washing fluid
            Excessive volumes of leaching medium
            required.
            Formulation of suitable washing fluids
            difficult.
            May require frequent reformulation of
            washing fluid.
            Inhibition of desorption.
            May reduce contaminant mobility.
            Fine particles difficult to remove from
            washing fluid.

            Low recovery rate because organics are
            held more tenaciously.
            High cost if recovery low.
            Requires replacement of washing fluid.
            Surfactant adheres to soil to reduce
            effective porosity.

            Soil may require additional treatment for
            detoxification.  Fluid processing requires
            caution.
Equilibrium partition
coefficient
Analysis for priority
pollutants, solubility
data

Statistical sampling,
analysis for priority
pollutants
Analysis for organic
matter

Pilot testing
Soil particle size
distribution, USGS
soil classification
Bench-scale testing
Bench-scale testing,
conventional analysis*

Permeability pilot
testing

Toxicity of washing
fluid
  Conventional analysis should include organic content (e.g., BOD, COD, TOC), solids content,
  iron, manganese, and leachate pH.

Source:  Technology Screening Guide for Treatment of Soils and Sludges EPA/540/2-88/004
         (1988)
                                         4-4

-------
4.9
EXHIBIT 2 - DATA FROM THE SEMI-ANNUAL STATUS REPORT
 Selection Frequency*
   NUMBER
   Of TIMES
  SELECTED
                                             Soil Washing
                     88            89
                               FISCAL YEAR
       * Data derived from 1982 -1990 Records of Decision ( RODs ) and anticipated design and
        construction activities.
                                                          September 1991
         Contaminants Treated By Soil Washing
 Number
   of
Superfund  4
  Sites
          Creosote/PAHs  Metals   PCP/DloxIns  Phenols
                                                BTX
   * Data derived from 1982 - 1990 Records of Decision (RODs) and anticipated design andconstructbn
    activities. At some sites, the treatment is for more than one major contaminant.
                                   4-5

-------
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        4.11
EXHIBIT 4 - BULLETIN:  INNOVATIVE TECHNOLOGY SOIL WASHING
                             United States
                             Environmental Protection
                             Agency
                                   Solid Waste And
                                   Emergency Response
                                   (OS-220)
           Directive 9200.5-250FS
           November 1989
&EPA              Innovative  Technology
                             Soil  Washing
  TECHNOLOGY DESCRIPTION

     Soil washing is potentially effective in
  treating various organic and inorganic waste
  groups. It was designed for the separation/
  segregation and volumetric reduction of
  hazardous /naterials in soils, sludges, and
  sediments-. The process involves high en-
                contaminants from the solids.  The treated
                solid fractions  (less than 74 microns) are
                thenrinsed,dewatered,andredeposited. The
                contaminated washing  fluid, containing
                highly contaminated fine fractions (greater
                than 74 microns) is recycled through a con-
                ventional wastewater treatment system and
                is reintroduced into the treatment process.
              Figure 1: Schematic Diagram of a Mobil* Soil Washing
                              Treatment Facility
                Mobil* Soil Washing
                 System (MSWS)
 ergy contacting and mixing of excavated
 contaminated soils with an aqueous-based
 washing solution in a series of mobile wash-
 ing units. A typical soil washing treatment
 flow diagram is shown in Figure 1.
     Before treatment, the contaminated soil
 is passed through a coarse-mesh sieve to re-
 move material greater than two inches (e.g.,
 rocks, debris). The remaining material then
 enters a soil scrubbing unit, where it is sprayed
 with a washing fluid and subsequently rinsed.
 Contaminants are primarily concentrated in
 the fine-grained soil fraction (i.e., silt and
 clay) and are less tenaciously sorbedonthc
 coarser-grained particles (i.e., sand). Ac-
 cordingly, the sand fraction of the soil usu-
 ally requires only the initial rinsing treat-
 ment to meet designated performance crite-
 ria prior to redeposition. The remaining silt/
 clay soil fraction en tersafour-staged counter-
 current contactor  to further separate the
                The fines are separated, removed, and dewa-
                tered and are handled/disposed as a mani-
                fested hazardous waste material.
                   Advantages of soil washing include a
                closed treatment system that permits control
                of ambient environmental conditions, po-
                tential significant volume reduction of the
                contaminant mass (depending on soil char-
                acteristics), wide application to varied waste
                groups, mobility of technology (hazardous
                wastes remain on-site), and relatively low
                cost compared to other multi-contaminant
                treatment technologies.  Disadvantages in-
                clude little reduction of the contaminant tox-
                icity, and potentially hazardous chemicals
                (e.g., chelating washing solutions) may be
                brought on-site to be used in the process, and
                also may be difficult to remove from the
                treated soil fraction. Applications and limi-
                tations of soil washing are discussed in the
                following sections.
SITE  CHARACTERISTICS AFFECTING
TREATMENT FEASIBILITY

    Soil washing has the potential to treat a
wide variety of contaminants such as heavy
metals, halogenated  solvents, aromatics,
gasoline and fuel oils,  polychlorinated
biphenyls (PCBs), and chlorinated phenols.
The projected effectiveness of this treatment
on general contaminant groups is provided
in Table 1; treatability tests are required to
determine the feasibility of soil washing for
specific target contaminants at a particular
site.
   Factors limiting theeffectivenessof soil
washing include complex waste mixtures,
high humic content in the soil, inhibiting
solvent-soil reactions, and a high  fine-
grained clay particle fraction.  Site-specific
characteristics and their potential impact on
the soil washing process are listed in Table 2.
               Table 1
     Effectiveness of Soil Washing
   Treatment on General Contaminant
       Groupa for Soil and Debris
Tmtabnity Group*

i
i
H.tog*««.votalU«


Non^aloganalad volalUaa
Nor^rialoganalad aarnKvolatlM
PCB>
Paaiicrt..
Oloxlna/Furana
Organic cyanWaa
Organic oorroalvaa
Volatlla mauto
Non-volall4a maula '
Atbaaloa
fUdk>»ctrv» malarlala
Inorganic oorroalvaa
Inorganic cyanktn
O>Mlzara
Raduoan


9
9
9
9
9
9
9
9
9
9
9
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0
9
9
9
9
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^BJ r ^/
'aMatEHMtonai O Po»M. OM.i»M Y
                                                   4-9

-------
  4.11
EXHIBIT 4 - BULLETIN:
(continued)
                                               INNOVATIVE TECHNOLOGY SOIL WASHING
                           Table 2
          Site-Specific Characteristics and Impacts on
                   Soil Washing Treatment
Charactartetioa
Impacting Proo»aa
Feasibility
Unfavorable separation
OOOftlCWnt for
centarmnatlof)
Complex nurtures ot
wait* type* (e.g., meta*
wltn organtas)
Unfavorable tod
characteristics:
. High nurtnc content
8*1, solvent reactions
' Fine partCM Size (SM
and clay)
• Clay Mil containing
•eml-VOMUIee
Unfavorable washing 'K*>
enaraaerWics:
• Difficult recovery of
solvent or surfactant
• Poor treatabllty ot
wasting fluid
• High toxtttty of washing
fluid
Reaaonalor
Potential
bnpaot
Eneealve volumes ot
leaching medium required
Formultaton ol suitable
washing fluids dtffcult
tohtttlon of OeeorpUon
May reduce oontamlnan
Fine partiaee omicuft to
remove from washing fluid
Lew recovery rale hsriim
oroartoe arc held more
tenaciously
High cost If recovery tow
Requires replacement of
washing fluid
Fluid processing requires
camion, soil may requro
detonlicatlon
Action* to
Mnlmlzs
Impact*
Bench- and pHoi-ecale tests
10 determine a suitable
wasting solution
Employ secondary treatment
technology
Employ secondary treatment
tsrhnoluyy
Plot testing to determine a
suitable washing fluid
None: or longer Oewatertng
period
None: or longer washing
period
Bench-seal* testing to
determine if technology is
economically feasible
Bench-scale testing to
determine If technology is
economicaly feasible
Longer dewatenng period.
post-treatment of setts:
bench- and plot-scale testa
to determine an alternate
wasrung solution
 TECHNOLOGY CONSIDERATIONS

     Because soil washing is primarily a volume-reduction process
 that does not reduce the inherent toxicity of a contaminant, the major
 technology consideration is determining the initial composition and
 post-treatment of the washing fluid and contaminated fines.  An
 ideal washing fluid should possess the following characteristics: a
 favorable separation coefficient for extraction, low volatility, low
 toxicity, safety and ease of handling, and efficient recoverabilky and
 treatability. Typical soil washing fluids may be composed of water
 only, or water in combination with organic solvents, chelating com-
 pounds, surfactants, acids, or bases; the exact washing fluid compo-
 sition depends upon the chemistry of the target contaminants).
    The treatment of the washing fluid is contingent  upon  the
 composition of the contaminants removed  from the waste stream.
 For expensive washing fluids (e.g., lead chelating agents), the rc-
 cyclability of the fluid is an important factor when determining the
 economic feasibility of the soil washing process. Full-scale soil
 washing units are projected to treat an average of 100 cubic yards of
 soil per day.

 TECHNOLOGY STATUS

    The following vendors claim to have successfully applied soil
 washing to various media and waste types and presently possess the
 technology to conduct pilot- and/or full-scale operation:

• MTA Remedial Resources, Inc., (MTARRI) uses technologies de-
veloped for mining and enhancing oil recovery  to remove and con-
centrate organic contaminants from soils and sludges. In  addition.
                                          MTA has treated various metallic compounds with acidic washing
                                          solutions. They state that 5 tons (5 percent) of contaminated treat-
                                          ment residue is generated per 100 tons of soil treated.

                                          • BioTrol, Inc. employs soil washing as a pretreatmem process in
                                          conjunction with biodegradation.  EPA is presently evaluating the
                                          BioTrol Soil WashingTreatment System (BSTS) under the SITE
                                          program. BSTS will be demonstrated on wood-treating chemicals
                                          (i.e., PCP, PAHs, copper, chromium, and arsenic) at the MacGillis
                                          and Gibbs Site, New Brighton, Minnesota, by Fall 1989.

                                          • EPA developed a mobile soil washing treatment system designed
                                          for water extraction of a broad range of hazardous materials from
                                          contaminated soils. The normal processing rate is 4 to  18 cubic
                                          yards of contaminated soil per hour  depending on the average
                                          particle size. Treatability costs range from approximately $20,000
                                          to over $100,000.

                                          Vendor names, contacts, and addresses are listed in Table 3.
                                              EPA has selected soil washing as a component of the  source
                                          control remedy for five CERCL A sites. Site names, ROD sign dates.
                                          target contaminants, and waste volumes are provided in Table 4.

                                          OFFICE OF RESEARCH AND DEVELOPMENT CONTACTS

                                              Supplemental information concerning soil washing may be ob-
                                          tained from Richard P. Traver, P.E., U.S. EPA, Edison, New Jersey
                                          08837. (201) 321-6677 or FTS 340-6677.
                                                                  Table 3
                                                             Vendor Information
Company
MTARRI
Eoova Corporation
BioTrol. Inc.
U.S. EPA. Rlak
Reduction
Eno,lne)s)rtng
Laboratory
Soil Cleaning
Company ol
America. Inc.
Contact
Paul Troat
Al Bourquln
Dale> Pflug
Richard P. Travetr
V«rl Rothllsborgew
Addraaa
1 51 1 Washington Avonue)
Qotoam. CO 8O4O1
(3O3) 27B-42S5
382O 159th Avewiuo NE
RexJmond. WA 98O52
(2O6) 883-1 OOO
1 1 Pe*v»y Road
Chaska. MN 55318
(612)448-2515
R«4a«s)e» Control Branch
Rarltan Depot -
Woodbrldge) Avanu*
Edlaon. NJ 08837-3679
(201)321-6677
7S3 Paralta Av*>nua>
San LsMindro. CA 94577
(416) 568-1234
                                                                   Table 4
                                                     Soil Washing Statue at CERCLA Sltee
SELECTED:
Region 1 - Ttnkham Garage, NH
a/as
Region 4 • Palmetto, SC
087
Region S - United Scrap, OH
948
Region 6 - Koppers/Texarkana, TX
9/88
Region 6 - South Cavalcade. TX
9/88
TCE. PCE m Soil
Arsenic. Chromium in Soil
Arsenic, Lead in Soil
Arsenic m Soil
PAHs m Sal
10,800 cubic yards
19,850 cubic yards
60,600 cubic yards
Not Provided
19, 500 cubic yards
                                                       4-10

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 4.12
EXHIBIT 5 - SITE TECHNOLOGY PROFILE - BIOTROL
Technology Profile
                   DEMONSTRATION
                       PROGRAM
                                   BIOTROU INC.
                                (Soil Washing System)
TECHNOLOGY DESCRIPTION:

The  Biotrol  Soil Washing  System  is  a
patented,  water-based, volume reduction
process for treating excavated soil.   Soil
washing   is  applicable  to  contaminants
concentrated in the fine size fraction of soil
(silt, clay, and soil organic  matter)  and
contaminants associated with the coarse soil
fraction   (sand   and  gravel),  primarily
surficial.  The objective of  the process is to
concentrate the contaminants  in a  smaller
volume of material separate from a  washed
soil  product.   The  goal  is  that the  soil
product  will   meet  appropriate  cleanup
standards.

After debris is  removed, soil is mixed with
water  and  subjected  to  various  unit
operations common to the mineral processing
industry.  Process steps can include  mixing
trommels, pug mills, vibrating screens, froth
flotation cells, attrition  scrubbing machines,
hydrocyclones, screw classifiers, and  various
dewatering operations.
                                The core of the  process  is a  multi-stage,
                                counter-current, intensive  scrubbing circuit
                                with interstage  classification. The scrubbing
                                action  disintegrates soil aggregates, freeing
                                contaminated fine  particles from the coarser
                                sand  and  gravel.    In addition,   surficial
                                contamination is removed from the coarse
                                fraction by the abrasive scouring action of the
                                particles themselves.  Contaminants may also
                                be  solubilized   as dictated  by  solubility
                                characteristics or partition coefficients.

                                The efficiency of  soil  washing  can   be
                                improved  using   surfactants,   detergents,
                                chelating agents, pH adjustment, or heat.  In
                                many  cases,   however,   water  alone   is
                                insufficient to  achieve  the  desired  level  of
                                contaminant removal while minimizing cost.

                                The volume of  material requiring additional
                                treatment or disposal is  reduced  significantly
                                by  separating   the  washed,  coarser  soil
                                components from  the  process  water  and
                                contaminated fine particles (Figure 1).
                                                                OPTIONS
                                                                  •off-sat DISPOSAL
                                                                  •INCINERATION
                                                                  •STABILIZATION
                                                                  •BIOLOGICAL TREATMENT
                  FIGURE 1.  BIOTROL SOIL WASHING SYSTEM PROCESS FLOWSHEET.
       EPA/540/5-90/006 (1990).
                                                                          r,ofiles
                                      4-]]

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  4.12
EXHIBIT 5 - SITE TECHNOLOGY PROFILE - BIOTROL (continued)
  The contaminated residual products can be
  treated by other methods.  Process water is
  normally recycled after biological or physical
  treatment.  Options  for the contaminated
  fines   can   include   off-site  disposal,
  incineration,  stabilization,  or  biological
  treatment.
  WASTE APPLICABILITY:

  This technology  was initially developed to
  clean  soils   contaminated   with  wood
  preserving  wastes  such  as polyaromatic
  hydrocarbons (PAHs) and pentachlorophenol
  (PCP). The technology is also applicable to
  soils   contaminated  with   petroleum
  hydrocarbons,  pesticides, polychlorinated
  biphenyls  (PCBs),  various   industrial
  chemicals, and metals.
  STATUS:

  The SITE demonstration of the soil washing
  technology took place from September 25 to
  October 27,  1989 at the MacGillis & Gibbs
  Superfund site in New Brighton, Minnesota.
  A pilot-scale unit with a treatment capacity
  of 500 pounds per hour was operated 24
  hours per day during the demonstration.
  Feed for the first phase of the demonstration
  (2 days) consisted of soil contaminated with
  170 ppm PCP and  240 ppm total PAHS.
  During  the  second  phase  (7 days), soil
  containing 980 ppm PCP and 340 ppm total
  PAHs was fed to the system.

  Contaminated   process  water  from  soil
  washing was treated biologically in a  fixed
  film reactor and recycled.  A portion of the
  contaminated  fines generated during soil
  washing was treated biologically in a 3-stage,
  pilot-scale EIMCO  Biolift™ reactor system
  supplied by  the EIMCO Process  Equipment
  Company.

  Preliminary  demonstration  results  showed
  that  PCP  levels in the washed  soil  were
  reduced by  91 to  93 percent.   Biological
  treatment reduced PCP levels in  the process
  water  by 89 to  94  percent.   Removal
  efficiencies  increased as the test proceeded.
  Near the completion of the test, PCP removal
                                was about 92 percent, while PAH removal
                                ranged from 86 to 99 percent.

                                The demonstration reports are expected to be
                                available in the first quarter 1991.
                                FOR FURTHER INFORMATION:

                                EPA Project Manager
                                Mary K.. Stinson
                                U.S. EPA
                                Risk Reduction Engineering Laboratory
                                Woodbridge Avenue
                                Edison, New Jersey  08837
                                908-321-6683
                                FT&  340-6683

                                Technology Developer Contact
                                John K. Sheldon
                                BioTrol, Inc.
                                11 Peavey Road
                                Chaska, Minnesota 55318
                                612-448-2515
                                Fax: 612-448-6050
Source: The Superfund Innovative Technology Evaluation Program: Technology Profiles
       EPA/540/5-90/006 (1990).
                                           4-12

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 4.13
EXHIBIT 6 - SITE TECHNOLOGY PROFILE - EXCALIBUR ENTERPRISES,
INC.
Technology Profile
                  DEMONSTRATION
                      PROGRAM
                      EXCALIBUR ENTERPRISES, INC.
                    (Soil Washing/Catalytic Ozone Oxidation)
TECHNOLOGY DESCRIPTION:

The Excalibur technology is designed to treat
soils   with   organic  and  inorganic
contaminants.  The  technology is a  two-
stage process:  the first  stage extracts the
contaminants from the soil, and the second
stage oxidizes contaminants  present in the
extract.  The extraction is carried out using
ultrapure water and  ultrasound. Oxidation
involves  ozone,  ultraviolet  light,  and
ultrasound.  The treatment products of this
technology are decontaminated soil and  inert
salts.

A flow schematic of the system is shown in
Figure  1.  After excavation, contaminated
soil is passed through a 1-inch screen.  Soil
particles retained on the screen are crushed
using a  hammermill and sent back to the
screen.  Soil particles passing through the
                              screen are  sent  to  a soil  washer,  where
                              ultrapure water extracts the contaminants from
                              the screened soil. Ultrasound acts as a catalyst
                              to  enhance soil  washing.    Typically,   10
                              volumes of water are added per volume  of
                              soil,  generating a  slurry of  about   10-20
                              percent solids.  This slurry  is conveyed to a
                              solid/liquid separator, such as a centrifuge or
                              cyclone, to separate the decontaminated soil
                              from  the  contaminated  water.     The
                              decontaminated soil  can  be returned  to  its
                              original location or disposed of appropriately.

                              After  the  solid/liquid separation, any  oil
                              present in the contaminated water is recovered
                              using  an  oil/water  separator.      The
                              contaminated  water  is  ozonated  prior  to
                              oil/water separation  to aid in oil  recovery.
                              The water then flows through a  filter  to
                              remove any fine particles. After the particles
                                        Contomlnoted
                                            Sol
        Decontaminated
             Sol
                                                                          WaUr
                                                                   (Recycled)
                     Figure  1. Excaliber Treatment System Flow Diagram.
Source:
                               Technology Evaluation Program: Technology Profiles
                                      4-13

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  4.13
EXHIBIT 6 - SITE TECHNOLOGY PROFILE - EXCALIBUR ENTERPRISES,
INC. (continued)
  are filtered,  the water  flows  through a
  carbon filter and a deionizer to reduce the
  contaminant  load  on the  multichamber
  reactor.

  In the  multichamber reactor,  ozone  gas,
  ultraviolet light,  and ultrasound  are applied
  to the contaminated water. Ultraviolet  light
  and ultrasound  catalyze  the  oxidation of
  contaminants  by ozone.  The  treated water
  (ultrapure water) flows out of the reactor to
  a storage tank and is reused to wash another
  batch of soil.  If makeup  water is required,
  additional ultrapure water is generated on-
  site by  treating  tap water with ozone and
  ultrasound.

  The treatment system  is also equipped  with
  a carbon filter to treat the off-gas from the
  reactor.  The  carbon filters are biologically
  activated to regenerate the spent carbon in-
  situ.

  System capacities range from one cubic foot
  of solids per hour, with a water flow rate of
  one gallon per minute; to 27 cubic yards of
  solids per hour, with a water flow rate of SO
  gallons  per minute.   The treatment units
  available for  the SITE demonstration  can
  treat 1 to 5 cubic yards of solids per hour.
  WASTE APPLICABILITY:

  This technology can  be applied to soils,
  solids, sludges,  leachates and  ground water
  containing  organics  such  as PCB, PCP,
  pesticides   and   herbicides,   dioxins,  and
  inorganics,   including  cyanides.     The
  technology  could  effectively  treat  total
  contaminant concentrations ranging from  1
  ppm to 20,000 ppm. Soils and solids  greater
  than 1 inch in diameter need  to be crushed
  prior to treatment.
  STATUS:

  The Excalibur technology was accepted into
  the SITE  demonstration  program in July,
  1989.     The   Coleman-Evans  site   in
  Jacksonville,   FL   has   been  tentatively
  scheduled for a SITE demonstration in late
  1990.
                                FOR FURTHER INFORMATION:

                                EPA Project Manager
                                Norma Lewis
                                U.S. EPA
                                Risk Reduction Engineering Laboratory
                                26 West Martin Luther King Drive
                                Cincinnati, Ohio  45268
                                513-569-7665
                                FTS:  684-7665

                                Technology Developer Contact
                                Lucas Boeve
                                Excalibur Enterprises, Inc.
                                314 West 53rd Street
                                New York, N.Y.  10019
                                212-484-2699

                                Florida Office:
                                3232 S.W. 2nd Avenue
                                Suite  107
                                Ft. Lauderdale, Florida 33315
                                305-763-9507
Source: The Superfund Innovative Technology Evaluation Program:  Technology Profiles
       EPA/540/5-90/006 (1990).
                                           4-14

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  4.14
EXHIBIT 7 - ENGINEERING BULLETIN: SOIL WASHING TREATMENT
 vvEPA
                            United State*
                            Environmental Protection
                            Agency
                                      Office of Emergency and
                                      Remedial Response)
                                      Washington. DC 20460
Office of
Research and Development
Cincinnati, OH 45268
                            Superfund
                                       EPA/540/2-90/017
September 1990
           Engineering Bulletin
           Soil  Washing  Treatment
 Purpose

    Section 121(b) of the  Comprehensive Environmental
 Response, Compensation, and Liability Act (CERCLA) mandates
 the Environmental Protection Agency (EPA) to select remedies
 that "utilize permanent solutions and alternative treatment
 technologies or resource recovery technologies to the maximum
 extent practicable' and to prefer remedial actions in which
 treatment "permanently and significantly reduces the volume,
 toxicity, or mobility of hazardous substances, pollutants, and
 contaminants as a principal element.' The Engineering Bulletins
 are a series of documents that summarize the latest information
 available on  selected treatment and  site remediation
 technologies and related issues. They provide summaries of
 and references for the latest information to help remedial
 project managers, on-scene coordinators, contractors, and
 other site cleanup managers understand the type of data and
 site characteristics needed to evaluate a technology for potential
 applicability to their Superfund or other hazardous waste site.
 Those documents  that  describe individual  treatment
 technologies focus on  remedial investigation scoping needs.
 Addenda will be issued periodically to update the original
 bulletins.
Abstract

    Soil washing is a water-based process for mechanically
scrubbing soils ex-situ to remove undesirable contaminants.
The process removes contaminants from soils in one of two
ways: by dissolving or suspending them in the wash solution
(which is later treated by conventional wastewater treatment
methods) or by concentrating them into a smaller volume of
soil through simple particle size separation techniques (similar
to those used in sand and gravel operations).  Soil washing
systems incorporating both removal techniques offer the greatest
promise for application to softs contaminated with a wide
variety of heavy metal and organic contaminants.

    The concept of reducing soil contamination through the
use of particle size separation is based on the finding that most
organic  and  inorganic contaminants tend  to bind,  either
chemically or physically, to clay and silt soil particles. The silt
and clay, in turn, are attached to sand and gravel particles by
physical processes, primarily compaction and adhesion.
Washing processes that separate the fine (small) day and silt
particles from the coarser sand and gravel soil particles effectively
                                        separate and concentrate the contaminants into a smaller
                                        volume of soil that can be further treated or disposed. The
                                        clean, larger fraction can be returned to the site for continued
                                        use.  This set of assumptions forms the basis for the volume-
                                        reduction concept uoon which most soil washing technology
                                        applications are being developed.

                                            At the present time, soil washing is used extensively in
                                        Europe and has had limited use in the United States. During
                                        1986-1989, the technology was one of the selected source
                                        control remedies at eight Superfund sites.

                                            The final determination of the lowest cost alternative will
                                        be more  site-specific than process equipment dominated.
                                        Vendors should be contacted to determine the availability of a
                                        unit for a particular site. This bulletin provides information on
                                        the technology applicability, the  types of residuals resulting
                                        from the use of the technology, the latest performance data,
                                        site requirements, the status of the technology, and where to
                                        go for further information.
                                        Technology Applicability

                                            Soy washing can be used either as a stand-alone technology
                                        or in combination with other treatment technologies. In some
                                        cases, the process can deliver the performance needed to
                                        reduce contaminant concentrations to acceptable levels and,
                                        thus, serve as a stand-alone technology. In other cases, soil
                                        washing is  most successful  when combined with other
                                        technologies. It can be cost-effective as a pre-processing step
                                        in reducing the quantity of material to be processed by another
                                        technology such as incineration; it also can be used effectively
                                        to transform the soil feedstock into  a  more  homogeneous
                                        condition to augment operations in the subsequent treatment
                                        system. In general, soil washing is effective on coarse sand and
                                        gravel contaminated with a wide range of organic, inorganic,
                                        and reactive contaminants. Soils containing a large amount of
                                        clay and silt typically do not respond well to soil washing,
                                        especially if it is applied as a stand-alone technology.

                                            A wide variety of chemical contaminants can be removed
                                        from soils through soil washing applications. Removal efficiencies
                                        depend on the type of contaminant as weH as the type of soil.
                                        Volatile organic contaminants often are easily removed from
                                        soil by washing; experience shows that volatiles can be removed
                                        with 90-99 percent efficiency or more. Semivolatile organic*
                                                  4-15

-------
4.14
EXHIBIT 7  -  ENGINEERING BULLETIN:  SOIL WASHING TREATMENT
(continued)
may b« removed to a l«ss«r extent (40-90 percent) by selection
of the proper surfactant. Metals and pesticides, which arc more
insoluble in water, often require acids or cheating agents for
successful soil washing. The process can be applicable for the
treatment of soils contaminated with specific listed Resource
Conservation and Recovey  Act (RCRA) wastes  and other
hazardous  wastes  Including  wood-preserving  chemicals
(pentachtorophenol, creosote), organic solvents, electroplating
residues (cyanides, heavy metals), paintsludges (heavy metals),
organic chemicals production residues, pesticides and pesticides
production residues, and petroleum/oil residues [1, p. 6S9][2,
p. 15][4][7 through 13]«.

    The effectiveness of soil washing for general contaminant
groups and  soil types is shown in Table 1  [1, p. 659][3, p.
13][15, p.1]. Examples of constituents within contaminant
groups are provided in Reference  3, Technology Screening
Guide For Treatment of CEROA Soils and Sludges.' This table
is based  on currently available information or professional
judgment where definitive information is currently inadequate
or unavailable. The proven effectiveness of the technology for
a particular site or waste does not ensure that it will be effective
at all sites or that the treatment efficiency achieved will be
acceptable at other sites. For the ratings used in this table, good
to excellent applicability means the probability is high that soil
                        Table) 1
 AppBcobUHy of Sol Washing on General Contaminant
                Group* tor Various Sods
Co

!

i
1
1




atamtnant Cmup*
Hatogenated voUUIes
Hatogenated lemivoUtfles
Nonhalogenated semfvoUtaes
PCBs
Pesticides (hatogenated)
Dferfns/Furans
Organic cyanides
Organic corrosives

NonvoUOfct metals
Asbestos
Inorganic corraaNw
Inorganic cyartdes
Oxfctoen
Reducers




Me
fern*/
T
T
T
T
V
T
• T

(

T
T
K^ajMltV tKait tav



Mi
Uty/Clay
SeUt
T
T
T
T
T
T
T
T

T
Q
V
T
T
V
chnninnu >•*•• IM

^•jfc

                                              washing will be effective for that particular contaminant and
                                              matrix. Moderate to marginal applicability indicates situations
                                              where care needs to be exercised in choosing the soil washing
                                              technology. When not applicable is shown, the technology will
                                              probably notwont for that particular combination of contaminant
                                              group and matrix. Other sources of general observations an<
                                              average removal efficiencies for different treatabifity groups are
                                              the Superfund LOR Guide #6A, 'Obtaining a Soil and Debris
                                              Treatability Variance for Remedial Actions' (OSWER Directive
                                              9347.3-06FS), [16] and Superfund LOR Guide #68, 'Obtaining
                                              a Soil and Debris Treatability Variance for Removal Actions'
                                              (OSWER Directive 9347.3-07FS) (17).

                                                  Information on cleanup objectives as well as the physical
                                              and chemical characteristics of the site soil and its contaminants
                                              is necessary to determine the potential  performance of this
                                              technology and the requirements for waste preparation and
                                              pretreatment. Treaubilitytestsare also required at the laboratory
                                              screening, bench-scale and/or pilot-scale  level(s) to determine
                                                                      Table) 2
                                                      Wast* Soil Characterization Parameters
• [r4«ranc* number, p*g« number)
                                                               Paramtttr

                                                               Key Physical
                                                                     •urpott and Comment
                                               Partide die distribution:
                                                 >2mm
                                                   0.25-2 mm
                                                   0.063-0.25 mm
                                                 <0.0<3 mm
Overstoe pretreatment requirements
Effective sod meshing
United sol meshing
day and silt fraction—difficult sort
washing
                                                               Other Phvriol

                                                               Type, physical form,
                                                               handling properties

                                                               Moisture content
                                                               Kav Chemical

                                                               Organic*
                                                                Concentration
                                                                Volatttty
                                                                Partition
                                                                  coeffldent
                                                               Metals
                                                               Humkadd
                                                               Other Chemical
                                                                    Affects pretreatment and transfer
                                                                    requirements

                                                                    Affects pretrtabnent and transfer
                                                                    requirements
                                                                     Determine contaminants and asstss
                                                                     siparatkjn and washing efficiency,
                                                                     hydrophebic interaction, washing
                                                                     fluid compatibnty, change* in
                                                                     washing Ikad with changes in
                                                                     contaminants. May require
                                                                     preUending far consistent feed. Use
                                                                     the jar test protocol to determine
                                                                     contaminant partitioning.

                                                                     Concentration and species of
                                                                     constituents (spetiftc jar test) wfll
                                                                               ishing fluid compatibility.
                                                               pH, buffering
                                                               capadty
                                                                    mobify of metah, posttreatment

                                                                    Organ* content w» aflect adsorption
                                                                    charactariOta of contaminants on soi.
                                                                    Important In marine/wadand sites.
                                                                     May affect pretreatment
                                                                     requirements, compatiblity with
                                                                     equipment materials of construction,
                                                                     we* fluid compaiibSty.
                                                                 Engineering Bulletin: Soil Washing Treatment
                                                     4-16

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 4.14
EXHIBIT 7 - ENGINEERING BULLETIN:  SOIL WASHING TREATMENT
(continued)                         Figure 1
                    Soil Washing Applicable Particle Size Rang*
                                                          Sand
                                                        Avanot  i large
                                                                      Gravel
                                                                     Average   , Large
                           Difficult
                        Soil Washing
                         (Regime III)
                                                       Soil Wash with
                                                   Specific Washing Fluid
                                                        (Regime II)
                                                                      Economic Wash
                                                                    with Simple Particle
                                                                      Size Separation
                                                                        (Regime I)
         0.001  0.002
                       0.008  0.01  0.02
                          0.063 0.1   0.2        0.6    1     2

                          Diameter of Particle In Millimeters
60  100
the feasibility of the specific soil washing  process  being
considered  and to understand waste  preparation and
pretreatment steps needed at a particular  site. If bench-test
results are promising, pilot-scale demonstrations should normally
be conducted  before final  commitment to  full-scale
implementation. Treliability study procedures are explained
in the EPA's forthcoming document entitled "Superfund
Treatability Study Protocol: Bench-Scale Level of Soils Washing
for Contaminated Soils" [14].

    Table 2 contains physical and chemical soil characterization
parameters that must be established before a mutability test is
conducted on a specific soil washing process. The parameters
are defined as either "key* or "other* and should be evaluated
on a  site-specific basis.  Key parameters  represent soil
characteristics that have a direct impact on the soil washing
process. Other parameters should also be determined, but they
can be adjusted prior to the soil washing step based on specific
process requirements. The table contains comments relating to
the purpose of the specific parameter to be characterized and
its impact on the process [6. p. 90][14, p. 35].

    Particle size distribution is the key physical parameter for
determining  the feasibility of using a soil washing process.
Although particle size distribution should not become the sole
reason for choosing or eliminating soil washing as a candidate
technology for remediation, it can provide an initial  means of
screening for the potential use of soil washing.   Figure 1
presents a simplistic particle size distribution range  of curves
that illustrate a general screening definition for soil washing
technology.
                                                In its simplest application, soil washing is a particle size
                                            separation process  that can be used  to segregate the fine
                                            fractions from the coarse fractions.  In Regime I of Figure 1,
                                            where coarse soils are found, the matrix is very amenable to soil
                                            washing using simple particle size separation.

                                                Most contaminated soils will have a distribution that falls
                                            within Regime II of Figure 1. The types of contaminants found
                                            in the matrix will govern the composition of the washing fluid
                                            and the overall efficiency of the soil washing process.

                                                In Regime III of Figure 1, soils consisting largely of finer
                                            sand, silt,  and clay fractions,  and  those with  high humic
                                            content, tend  to contain strongly adsorbed organics  that
                                            generally do not respond favorably to systems that work by only
                                            dissolving or suspending contaminants in the wash solution.
                                            However, they may respond to soil washing systems that also
                                            incorporate a particle size separation step whereby contaminants
                                            can be concentrated into a smaller volume.
                                            Limitations

                                                Contaminants in soils containing a high percentage of silt-
                                            and clay-sized particles typically are strongly adsorbed  and
                                            difficult to remove. In such cases, soil washing generally snou id
                                            not be considered as a stand-alone technology.

                                                Hydrophobk contaminants generally require surfactants
                                            or organic solvents  for their removal from  soil.  Complex
                                            mixtures of contaminants in  the  soil (such as  a mixture of
                                            metals, nonvolatile organics,  and  semivolatile organics)  and
Engineering Bulletin: Soil Washing Treatment
                                                      4-17

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  4.14
EXHIBIT 7 - ENGINEERING BULLETIN: SOIL WASHING TREATMENT
(continued)                        Hcjura> 2
                         Aqueous Soil Washing Precede
                                              VoUtila
    Contaminated
         Soil
                              Makeup water
                             Extracting Agent(s)
                              (Surfactants, etc.)
                     Soil
                 Preparation
                     0)
              Prepared
                Soil
Soil Washing
   Process
     (2)
                                             -Washing
                                             -Aiming
                                             -Size Separation
                                                                           Emission
                                                                            Control
                                                                          Treated
                                                                          Air Emissions
                                                                   Recycled water
                                                                   Chemicals
Slowdown
  Water
                                                       Wastewater
                                                        Treatment
                                                           (3)
Treated
Water
                                                                                       Sludges/
                                                                                       Contaminated Fines
                                                                                       Clean Soil
                                                                                       Oversized Rejects
frequent changes in the contaminant composition in the soil
matrix make it difficult to formulate a single suitable washing
fluid that will consistently and reliably remove all of thedifferent
types of contaminants from the soil particles.  Sequential
washing steps may be needed. Frequent changes in the wash
formulation and/or the soil/wash fluid ratio may be required [3,
p. 7«][14, p. 7J.

    While washwater additives such as surfactants and chdants
may enhance some contaminant removal efficiencies in the soil
washing portion of the process, they also tend to interfere with
the downstream wastewitar treati nentsegments of the process.
The presence of these additives In the washed soil and  in the
wastewater treatment sludge may cause some difficulty in their
disposal [14, p. 7][15, p. 1). Costs associated with handling the
additives and managing them as part of the residuais/wastewater
streams must be carefully weighed against the incremental
improvements in  soil washing performance that they may
provide.

Technology Description

    Figure 2 is a general schematic of the soil washing process
[1,p.657][3,p.72]l1S,p.1].
                                              Soil preparation (1) includes the excavation and/or moving
                                          of contaminated soil to the process where it is  normally
                                          screened to remove debris and large objects. Depending upon
                                          the technology and whether  the process is semibatch or
                                          continuous, the soil may be made pumpable by the addition of
                                          water.

                                              A number of unit processes occur in the soil washing
                                          process (2). Soil is mixed with washwater and possibly extraction
                                          agents) to remove contaminants from soil and transfer them
                                          to the extraction fluid.  The soil and washwater  are then
                                          separated, and the soil is rinsed with clean water. Clean soil is
                                          then removed from the process as product. Suspended soil
                                          particles are recovered directly from the spent washwater, as
                                          sludge, by gravity means, or they may be removed by flocculation
                                          with a selected polymer or chemical, and  then separated by
                                          gravity.  These solids will most likely be a smaller quantity but
                                          cany higher levels of contamination than the original soil and,
                                          therefore, should be targeted for either further treatment or
                                          secure disposal. Residual solids from recycle water cleanup may
                                          require post-treatment to ensure safe disposal or release. Water
                                          used in  the soil washing process is treated by conventional
                                          wastewater treatment processes to enable it to be recycled for
                                          further use.
                                                               Engineering Bulletin: Soil Washing Treatment
                                                      4-18

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 4.14
EXHIBIT 7 - ENGINEERING BULLETIN:  SOIL WASHING TREATMENT
(continued)
                                                 Moisture content of soil must be controlled for consistent
                                             handling and treatment; this can be accomplished, in part, by
                                             covering excavation, storage, and treatment areas.
     Wastewater treatment (3) processes the btowdown  or
 discharge water to meet regulatory requirements for heavy
 metal content, organic!, total suspended solids, and other
 parameters.  Whenever possible, treated water should be
 recycled to the soil wishing process.  Residual solids, such  as
 spent ion exchange resin and carbon, and sludges from biologi-
 cal treatment may require post-treatment to ensure safe d isposal
 or release.

     Vapor treatment may be needed to control air emissions
 from excavation,  feed  preparation,  and  extraction; these
 emissions are collected and treated, normally by carbon
 adsorption or  incineration, before being  released to the
 atmosphere.
 Process Residuals

     There are four main waste streams generated during soil
 washing:  contaminated solids from the soil washing unit,
 wastewater, wastewater treatment sludges and residuals, and
 air emissions.

     Contaminated clay fines and sludges resulting from the
 process may  require further treatment using acceptable
 treatment technologies (such as incineration, low temperature
 desorption, solidification and stabilization, biological treatment,
 and chemical  treatment) in  order to permit disposal in  an
 environmentally safe manner [16]. Slowdown water may need
 treatment to meet appropriate discharge standards prior to
 release to a local, publicly owned wastewater treatment works
 or receiving stream.  To the  maximum extent practical, this
 water should be recovered and reused in the washing process.
 The wastewater treatment process sludges and residual solids,
 such as spent carbon and spent ion exchange resin, must be
 appropriately treated before disposal. Any air emissions from
 the waste preparation  area or the washing unit should  be
 collected  and  treated, as appropriate  to  meet applicable
 regulatory standards.
Site Requirements

    Access roads are required for transport of vehicles to and
from the site. Typically, mobile soil washing process systems
are located onsite and may occupy up to 4 acres for a 20 ton/
hour unit; the exact area will depend on the vendor system
selected, the amount of soil storage space, and/or the number
of tanks or ponds needed for washwater preparation and
wastewater treatment.

    Typical utilities required are water, electricity, steam, and
compressed air. An estimate of the net (consumed) quantity of
local water required for soil washing, assuming water cleanup
and recirculation, Is 130,000-800,000 gallons per 1,000 cubic
yards (2,500,000 Ibs.) of soil (approximately 0.05-0.3 gallons
per pound).

    Because contaminated soils are  usually considered
hazardous, their handling requires that a site safety plan be
developed to provide  for personnel protection and special
handling measures during soil washing operations.
                                                 Fire hazard and explosion considerations should be minimal,
                                             since the soil washing fluid is predominantly water. Generally,
                                             soil washing does not require storing explosive, highly reactive
                                             materials.

                                                 Climatic conditions such as annual or seasonal precipitation
                                             cat se surface runoff and water infiltration.  Berms, dikes, or
                                             otl tr runoff control methods may be required. Cold weather
                                             fre tzing must also be considered for aqueous systems and soil
                                             ex( avation operations.

                                                 Proximity to a residential neighborhood will affect plant
                                             nose requirements and emissions permitted in order tominimize
                                             thiir impact on  the population and meet existing rules and
                                             ret ulations.

                                                 If all or part of the processed soil is to be redeposited at the
                                             siti, storage areas must  be provided until analytical data are
                                             obtained that verifies that treatment  standards have been
                                             achieved.  Onsite analytical  capability could expedite  the
                                             storage/final disposition process. However, soil washing might
                                             be applied to many different contaminant groups. Therefore,
                                             the analytes that would have to be determined are site specific,
                                             and the analytical equipment that must be available will vary
                                             from site to site.
                                             Performance Data

                                                The performances of soil washing processes currently
                                             shown to be effective in specific applications are listed in Table
                                             3 n][2][4][7 through 13]. Also listed are the range of particle
                                             size treated, contaminants successfully extracted, byproduct
                                             wastes generated, extraction  agents used, major extraction
                                             equipment for each system, and general process comments.

                                                The data presented for  specific contaminant  removal
                                             effectiveness were obtained from publications developed by
                                             the respective soil washing system vendors. The quality of this
                                             information has not been determined.

                                                RCRA  Land  Disposal Restrictions (LORs) that require
                                             treatment of wastes to best demonstrated available technology
                                             (BOAT) levels prior to land  disposal may  sometimes be
                                             determined to be applicable or relevant and appropriate
                                             requirements (ARARs) for CERCLA response actions.  The soil
                                             washing technology can produce a treated waste that meets
                                             treatment levels set by BOAT, but may not reach these treatment
                                             levels in aH cases. The ability to meet required treatment levels
                                             is dependent upon the specific waste constituents  and the
                                             waste matrix. In cases where soil washing does not meet these
                                             levels, it still may, in certain situations, be selected for use at the
                                             site if a treatabifity variance establishing alternative treatment
                                             levels is obtained. EPA has made the treataoility variance
                                             process  available in order to ensure that LORs  do not
                                             unnecessarily restrict the use of alternative and innovative
                                             treatment technologies. Treataoility variances may be justified
                                             for handling complex soil and  debris matrices. The following
                                             guides describe when and how  to seek a treatabifity variance for
                                             soil and debris: Superfund LOR Guide 06A, "Obtaining a Soil
Engineering Bulletin: Soil Washing Treatment
                                                         4-19

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4.14            EXHIBIT 7 - ENGINEERING BULLETIN:
                (continued)
       and Debris Treataoiiiiy variance for Remedial Actions' (OSWER
       Directive 9347.3-06FS) [16], and Superfund LDR Guide #68,
       "Obtaining a Soil and Debris TreaUbility Variance for Removal
       Actions'  (OSWER  Directive  9347.3-Q7FS) [17].  Another
       approach could be to use other treatment techniques in series
       with soil washing to obtain desired treatment levels.
       Technology Status

           During 1986-1989, soil washing technology was selected
       as one of the source control remedies at eight Superfund sites:
       Vineland  Chemical,  New  jersey; Koppers Oroville  Plant,
       California; Cape Fear Wood Preserving, North Carolina; Ewan
       Property, New Jersey; Unlearn Garage, New Hampshire; United
       Scrap, Ohio; Koppers/Texarkana, Texas; and South Cavalcade,
       Texas [18].

           A  large  number of vendors provide a  soil washing
       technology. Table 3 shows the current status of the technology
       for 14 vendors. The front portion of the table indicates the scale
       of equipment available from  the vendor and gives some
       indication of the vendor's experience by showing  the year it
       began  operation.

           Processes evaluated or used for site cleanups by the EPA are
       identified separately by asterisks in the Proprietary Vendor
       Process/EPA column in Table 3.

           The following  soil washing  processes that  are under
       development have not been evaluated by the EPA or included
SOIL WASHING TREATMENT

    in Table 3. Environmental Group, Inc. of Webster, Texas, has
    a process that reportedly removes metals and oil from soil.
    Process efficiency is stated as greater than 99 percent for lead
    removal from soils cleaned in Concord, California; greater than
    99 percent for copper, lead, and zinc at a site in Racine,
    Wisconsin; and 94 percent for PCS removal on a Morrisc
    Knudsen Company project. The  process does not appear u.
    separate soil into different size fractions. Detailed information
    on the process is not available. Consolidated Sludge Company
    of Cleveland, Ohio, has a soil washing system planned that
    incorporates their Mega-sludge Press at the end of the process
    for dewatering solids. The system has not yet been built.

        Vendor-supplied treatment costs of the processes reviewed
    ranged from S50 to S20S per ton of feed soil.  The upper end
    of the cost range includes costs for soil residue disposal.
    EPA Contact

        Technology-specific questions regarding soil washing may
    be directed to:

        Michael Cruenfeid
        U.S. EPA, Releases Control Branch
        Risk Reduction Engineering Laboratory
        Woodbridge Avenue, Building 10
        Edison, New Jersey 08837
        Telephone FTS 340-6625 or (201) 321 -6625.
                                                       4-20
                                                                     Engineering Bulletin: Soil Washing Treatment

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4.14
EXHIBIT 7 - ENGINEERING BULLETIN:  SOIL WASHING TREATMENT
(continued)   Table 3.  Summary of Performance Data and Technology Status -Parti
tap/Mary Vendor
rYoceu/ZM
llU S. Processes
(1) SOILCLEANING COMPANY
OF AMERICA [3115, p. 2]
(2)' 8IOTROL SOIL TREATMENT
SYSTEM (BSTS)
[4,p.6][12]
(3) EPA'S MOBILf COUNTER.
CURRENT EXTRACTOR
PIP. P. 5]
(4)' EPA'S FIRST GENERATION
PILOT DRUM SCREEN
WASHER [10, p. 8]
(S)* MTA REMEDIAL
RESOURCES
[11]I15,p.2]
MgAerticafc
o/Operat/on
•••
FuM scale
15 tons/hr
Pilot scale
SOOIbs/hr
Pilot scale
4.1 tons/hr
Pilot scale
Bench seal*
fror Operation
•toon
l^g^g
1988
Fall, 1987
Modified with
drum washer
and shakedown-
1982
Full Scale-1 986
1988
N/A
tang* ol fartkb
totTrtoM
••••IB
Bulk sod
Above clay size and
below 0.5 in. Some
cleaning of fine par-
ticles in bio-reactor
2-25 mm in drum
washer
<2 mm in four-stage
extractor
Oversize (>2 mm)
removed prior to
treatment
Oversize removed
prior to treatment
Contaminant!
Extract* from Sot
••••H
Ol and grease
Organic* • pentachioro-
phenol, creosote,
naphthalene, pyrene,
fluorene, etc.
Soluble organics
(phenol, etc.)
Heavy metals
(Pb. etc.)
Petroleum
hydrocarbons
Organic* (oil)
Heavy metals (Inorganics;
removed using counter-
current decantatton
with leaching
Extraction Agtnt(t)
•^•^•^••.V
Hot water with
surfactant
Proprietary
conditioning
chemicals
Various solvents,
additives, surfactants,
redox acids and bases
Chelating agent
(EDTA)
Biodegradable
surfactant
(aqueous slurry)
Surfactants and
alkaline chemicals
added upstream of
froth flotation ceMs.
Acid for leaching.
Noil U.S. Processes
(6) ECOTECHNIEK 8V
[2, p. 17]
(7) BODEMSANERING
NEDERLANO
8V(BSN)
[2. p. 17]
(8) HARBAUER
[2. p. 20][7, p. 5]
(9) HWZ
BODEMSANEMNG IV
[2. p. 17]
(10) HEIIMAN
MIUEUTKHNKKIV
[2,p.l7][7.p.ol
(11) HEIDEMII FROTH
FLOTATION
[7.P.8]
Commercial
100 ton/hrmu
Commercial
20ton/hr
ContfTMTCleH
1 5-20 tora/hr
Commerdal
20-25 tons/hr
PfcX scale
10-15 tons/hr
Full scale
1982
1982
Lab. 1985
Commercial -1986
With fines
removal- 1987
1984
1985
N/A
Sandy soil
>1 00 mm removed
No more than 20%
<6$iun
Sludge <30 urn not
cleaned
1 5 tun • 5mm Pre-
treatment: coarse
screens, electromagnet
blade washer
<3 jim
<1 0 mm and no more
than 30% <63 >im
<4 mm and no more
than 20% <50 pm
Crude oil
Ol from sandy soil
Mostly organics
Limited heavy metals
removal experience
Cyanide, Chlorinated
HC, some heavy
metals, PNA
Cyanide, heavy metals,
mineral oil (water
immiscible hydro-
carbons)
Cyanide, heavy metals,
chlorinated HO, oiL
toluene, benzene,
pesticides, etc
None. Water-iand
slurry heated to 90*C
max. with steam.
None. Uses high
pressure water iet
for soils washing.
Hydraulically
produced oscillation/
vibration
Surfactants
Acid/bast
Sodium Hydroxide
to adjust pH
Surfactants
Proprietary extraction
agents. Hydrogen
Peroxide (H,0,)
added to react
with extracted CN
to form CO, and NH,
Proprietary Surfact-
ants and other pro-
prietary chemicals
      •Process evaluated or used for site cleanup by the EPA.   N/A » Not available.
     Engineering Bulletin: Soil Washing Treatment
                                                  4-21

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4.14
EXHIBIT 7 - ENGINEERING BULLETIN:  SOIL WASHING TREATMENT
(continued)
          Table 3. Summary of Performance Data and Technology Status - Part I (continued)
•roBfMarrVeno'ar
PncaM/fPA
Higtmt Scott
ot Operation
rear Operation
JtyoR
Hanoi of tank*
StuTnat*
CorMamdMntf
toraetari from Sol
Non US. Processes (continued)
(12) EWHALSEN.
BRETTENBURG
Otkomat System (2, p. 20]
(13) TBSG
INDUSTRIEVtmETUNCEN
Ot Crep 1 Systam [7. p. 7]
(14) KLOCKNER
UMWELTECHNIK
Jet-Modified 8SN [2. p. 20]
Ploticato
8-IOcu.m/hr
Pflot icale
Pilot scale
N/A
19M
N/A
<80mm
Oays treitad offsite
Sand <50 mm
Partidei<100}im
treated offsite
Ho more than 20%
<63 (im
Ol from sandy sol
Hydrocarbon and of
Aliphatic* and aromatic*
with densities < water,
volatile organics. some
other hydrocartoora
Extraction Agtnt(t)
m^^mm
Proprietary
Proprietary combina-
tion of surfactants,
solvents, and aromatic
hydrocarbons
None. Soil blasted
with » water |tt (at
5,075 psi)
                            Table 3. Summary of Performance Data and Technology Status • Part II
Proprietary Vendor
Pmctts/lM
tyanduct Watttt
GfMTOttd
£jttraetton
Cqulpmmt
imcltncfot
Contaminant Xemovo/
Additional
•roccu Comments
US Processes
(1) SOIL CLEANING
OF AMERICA
(2)* BIOTROLSOtL
TREATMENT SYSTEM
(BSTS)
(3) EPA's MOBILE
COUNTER-CURRENT
EXTRACTOR
(4)* EPA's FIRST
GENERATION PILOT
DRUM SCREEN
WASHER (POSW)
(5)' MTA REMEDIAL
RESOURCES (MTARRT)
Froth Flotation .
Wetoi
Oi and grease
Sludge from bio*
ogkal treatment
Clay fraction
Recovered organics
Spent
carbon (oversize)
Sludge-"
Flocculated firm
Ftocculatfon froth
Screw conveyors
Agitated
conditioning tank
Froth flotation
Slurry bioreactor
Drum screen
Water knife
Sod scrubber
4-Stage
Counter-current
chemical extractor
Drum screen
washer
Reagent blend
tank
notation cells
Counter-current
decantation
Cbntom- **rnovo^ toiduat
mont cfnttfficy 4A PP""
Ol and S043 250400
grease
For the case presented:
90-95% for Pentachlorophenol;
to residuals <1 1 5 ppm.
85-95% for most other organics;
to residual! <1 ppm.
Contain- Rtmo** Unidual
monf cfTicjffncy ft ppm
Phenol 90 from in. soil 1
80 from or. soil 96
AS,0, SO-80 0.5-1.3
SoUSUt hti.
Contom-froction Jtcmovof dual
tnont mm £fflc.tt ppm
01 and 0.25-2 99 <5
grease <0-25 90 2400
Contain- HtmtMol Xaidual
inant Erficjcney * ppm
Volatile
organics 98-99+ < 50
SemrwoUuTe
organics 98-994- < 250
Most fuel
products 98-994- < 2200
Three screw conveyors operated
in series, hot water with surfactant
injected into each stage. Final soil
rinse on a fourth screw conveyor.
Dewatered days and organics to be
treated offsite by incineration,
solidification etc. Washed soil was
appro*. 78% of feed. Therefore,
significant volume reduction was
achieved.
Clay fraction treated elsewhere.
Process removal efficiency
increases if extracting medium is
heated. InstaU wet classifiers
beneath the PDSW to remove
waste water from treated soil.
Auger classifiers are required to
to discharge partides effectively.
Flotation cats linked by underflow
we* gates. Induced air blown
down a center shaft In each cell.
contains 5-1 0 wt% of feed soil.
        •Process evaluated or used for site cleanup by the EPA,    N/A > Not available.
                                                              Engineering Bulletin: Soil Washing Treatment
                                                    4-22

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4.14         EXHIBIT 7 - ENGINEERING BULLETIN: SOIL WASHING TREATMENT
             (continued)
                   Table 3. Summary of Performance Data and Technology Status • Part II (continued)
[ Amavttorr V«m*ar
IflnxawCM
fypvoo'Mcf Mantes
CtntnXtd
Extraction
£eii^pmtrNT
Effidmcre/
Contaminant *****
MHUanal
Process Commeiti
|NOM U S Processes
(«) ECOTECHNIWfcV
(7) BOO£MSANEMNC
NEOERLANOBV(BSN)
(8) HARBAUER
OF AMERICA
(9) HWZ
BOOEMSANERINC 8V
(10) HE1IMAN
MIUEUTECHNIEK BV
(11) H€IDEMI| FROTH
FLOTATION
(12) EWHALSEN-
BRETTINBURG
CMuvnat Syitem
(13) TBSC
INOUSTRIEVEiriBT-
UNCEN
CM Crep 1 System
(14) KLOCKNEX
UMWELTECHNIK
rftgh Pressure Water
let-Modified BSN
Wet of
Ol/organks
recovefed from
wastewater fines
Carbon which may
contain contami-
nants
Fines
Sludge containing
iron cyanide
Large particles —
carbon, wood, grass
Flocculated fines
sludge
Ofl (If any) and sit
Contaminated float
Recovered ofl
Flocculated fines
(sludge)
Ol phase contain-
ing 01 Crept
d/organta
recovered from
wastewater fines
Sludge
Jacketed, agitated
tank
Water |et
Conditioning tank
Low frequency
vibration unit
Scrubber
(for caustic
addition)
Upflow classifier
Mix tank
followed by soils
fraction equip-
ment — hydro-
clones, sieves,
tit plate separators
Conditioning tank
Froth flotation
tanks
Hkjh-sheer
stirred tank
Screw mi MT
fottowedbya
rotating separation
drum for oil
recovery
Water jet -
circular nozzle
arrangement
About 90%
20,000 ppm residual ait
Selected results:
Contain- ft«movof tesiduotf
inont f/RrimcxM ppm
Aromatics >81 >45
PNAs 9S 1 5
Crude oil 97 2300
Contain- Jtanovof JteiduoY
inont Efficiency * ppm
Orgink-a NO
Tocarganics 96 159-201
Tot phenol 86-94 7-22.5
PAH 86-90 91.4-97.5
PCS 8441 0.5-1.3
Contain. famovof Httidual
mant fAtrimcy •» ppm
CN 95 5-15
PNAs 98 15-20
Chlorin-HC 98 <1
Heavy metals 75 75-125
Contain- frmovo) Rtiiduol
mont f/Hcjffncx 4f Ppf
Cyanide 93-99 <15
Heavy metal
cations appro*. 70 <200
Co/Warn- ftfmovof btiduol
inont OBcifrxy* ppm
Cyanide >95 5
Heavy metals >90avg >1SO
ChkxvvHC >99 0.5
OH >99 20
About 95% oil removed
>9S% Removal of hydrocarbons
has been achieved. Results are
influenced by other contaminant*
present.
Selected results:
Contam- temova/ Jtatt/af
inont ErrlcMYicy % PP"t
HC 96.3 82.05
ChlonYvHC >7S. <0.01
Aromatics 99.8 <0.02
PAHs 95.4 15.48
Phenol >99.8 <0.01
Effectiveness of process depen-
dent on sol partidt size and type
of oi to be separated.
No cofrvnonti
Vibrating screw conveyor used.
aeened soil separated from
extractant liquor in stages; coarse
soil by sedimentation, medium
fraction in hvdrodone, fines
(1 5-20 pm) by vacuum filter press.
When the fines fraction (<63 Mm) is
greater than 20%, (he process is not
economical. HWZ ha* had some
problems in extracting PNAs and
otty material.
Process works best on sandy soils
with a minimum of humus-like
compounds. Because no sand or
charcoal filters are employed by
Hermans, the system does not
chlorinated hydrocarbons.

Process has broad application for
removing hazardous materials from
soil. Most experience has been on
a laboratory scale.
Ocened soi from high shear
stirred tank is separated Into
screw dassrlen, hydrodones, and
sedimentation tanks.
Ol Crep system was used lucceu-
fuHy in Flansburg, FRC (in 1 986)
to remove PCBs, PAHs, and other

No contfTwnts
    •Process evaluated or used for site cleanup by the EPA.  N/A « Not avaiable.
    Encjin**rincj Bulletin: Soil Washing Treatment
                                                  4-23

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4.14
EXHIBIT 7 - ENGINEERING BULLETIN:
(continued)
                                                              SOIL WASHING TREATMENT
                                                  REFERENCES
    1   AssinkJ.W. Extractive Methods for Soil
       Decontamination; • General Survey and Review of
       Operational Treatment Installations. In: Proceedings
       from the First International TNO Conference on
       Contaminated Soil, Ultrecht, Netherlands, 1985.
    2.  Raghavan, R., O.H. Diett, and L Coles. Cleaning
       Excavated Soil Using Extraction Agents: A State-of-the-
       Art Review. EPA 600/2-89/034, U.S. Environmental
       Protection Agency, 1988.
    3.  Technology Screening Guide for Treatment of CERCLA
       Soils and Sludges. EPA 540/2-88/004, U.S.
       Environmental Protection Agency, 1988.
    4.  MX Stinson, et al.  Workshop on the Extractive
       Treatment of Excavated Soil. U.S. Environmental
       Protection Agency, Edison, New jersey, 1988.
    5.  SmarkeJ, K.L Technology Demonstration Report - Soil
       Washing of Low Volatility Petroleum Hydrocarbons.
       California Department of Health Services, 1988.
    6.  Guide for Conducting Treatability Studies Under
       CERCLA, Interim Final. EPA/540/2-89/058, U.S.
       Environmental Protection Agency, 1989.
    7.  Nunno, T.J., JA. Hyman, and T. Pheiffer.  Development
       of Site Remediation Technologies in European
       Countries. Presented at Workshop on the Extractive
       Treatment of Excavated Soil. U.S. Environmental
       Protectkxi Agency, Edison, New Jersey, 1988.
    8.  Nunno, T.)., and J A. Hyman. Assessment of
       International Technologies for  Superfund Applications.
       I-PV540/2-88/003,  U.S.  Environmental Protection
       Agency, 1980.
    9.  Scholz, R., and). MilanowsU.  Mobile System for
       Extracting Spilled Hazardous Materials from Excavated
       Soils, Project Summary.  EPA/600/52-83/100, U.S.
       Environmental Protection Agency, 1983.
    10. NashJ.  Field Application of Pilot Scale Soils Washing
       System.  Presented at Workshop on the Extracting
       Treatment of Excavated Soil. U.S. Environmental
       Protection Agency, Edison, New jersey, 1988.
                                               11. Trost, P.B., and R.S. Rlckard.  Orvsite Soil Washing—A
                                                  Low Cost Alternative. Presented at ADPA, Los Angeles,
                                                  California, 1987.

                                               12. Pflug, A.D. Abstract of Treatment Technologies, Biotrol,
                                                  Inc. Chaska, Minnesota, (no date).
                                               13. Biotrol Technical Bulletin, No. 87-1 A. Presented at
                                                  Workshop on the Extraction Treatment of Excavated
                                                  Soil, U.S. Environmental Protection Agency, Edison,
                                                  New jersey, 1988.
                                               14. Superfund Treatability Study Protocol: Bench-Scale
                                                  Level of Soils Washing for Contaminated Soils, Interim
                                                  Report U.S. Environmental Protection Agency, 1989.
                                               15. Innovative Technology: Soil Washing. OSWER Directive
                                                  9200.5-250FS, U.S. Environmental Protection Agency,
                                                  1989.
                                               16. Superfund LDR Guide 06A:  Obtaining a Soil and Debris
                                                  Treatability Variance for Remedial Actions. OSWER
                                                  Directive 9347.3-06FS, U.S. Environmental Protection
                                                  Agency, 1989.
                                               17. Superfund LDR Guide #68:  Obtaining a Soil and Debris
                                                  Treatability Variance for Removal Actions.  OSWER
                                                  Directive 9347.3-07FS, U.S. Environmental Protection
                                                  Agency, 1989.
                                               18. ROD Annual Report FY1989. EPA/540/8-90/004, U.S.
                                                  Environmental Protection Agency, 1990.
                                                                OTHER REFERENCES

                                                   Overview—Soils Washing Technologies For
                                                   Comprehensive Environmental Response,
                                                   Compensation, and Liability Act, Resource Conservation
                                                   and Recovery Act, Leaking Underground Storage Tanks.
                                                   Site Remediation, U.S. Environmental Protection
                                                   Agency, 1989.
                                                                 engineering Bulletin: SoU Washing Treatment
                                                   4-24

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4.15          KEY REFERENCE LIST - SOIL WASHING


Ellis W.D. and Payne, J.R., The Development of Chemical Countermeasures for
       Hazardous Waste Contaminated Soil. Edison, NJ:  Oil and Hazardous Materials
       Spill Branch, U.S. EPA.

Nunno, T.J. and J.A. Hyman, Assessment of International Technologies for Superfund
       Applications, EPA 540/2-88/003, 1988.

Offutt, C. and Knapp, J. The Challenge of Treating Contaminated Superfund Soil, pp.
       700 - 711. In Superfund '90, Proceedings from llth Annual National Conference,
       Hazardous Materials Control Research Institute, Silver Spring, MD.

U.S. Environmental Protection Agency, 1985.  In Situ Flushing and Soils Washing
       Technologies for Superfund Sites, 1985.  Presented at RCRA/Superfund
       Engineering Technology Transfer Symposium by Risk Reduction Engineering
       Laboratory, Cincinnati, Ohio.

U.S. Environmental Protection Agency, 1989.  Summary of Treatment Technology
       Effectiveness for Contaminated Soil, EPA/540/2-89/053.

U.S. Environmental Protection Agency, 1989.  Innovative Technology: Soil Washing;
       OSWER Directive 9200.5-250-FS (Fact Sheet Attached).

U.S. Environmental Protection Agency, 1990.  Handbook on In Situ Treatment of
       Hazardous Waste - Contaminated Soils, EPA/540/2-90/002.

U.S. Environmental Protection Agency, 1990.  Inventory of Treatability Study Vendors,
       Volume 1, EPA 540/2-90/003a.

U.S. Environmental Protection Agency, 1990.  Second Forum on Innovative Treatment
       Technologies, Domestic and International, Philadelphia, PA, May  15-17, 1990.
       EPA/540/2-90/006 (Abstracts) or EPA/540/2-90/010 (Technical Papers).

U.S. Environmental Protection Agency, Mobile Soils Washing System (Videocassette from
       EPA, Edison, NJ).

U.S. Environmental Protection Agency. Mobile System for Extracting Spilled Hazardous
       Materials  from Soil  (fact sheet available from Risk  Reduction Engineering
       Laboratory, Releases Control Branch, Edison, NJ).

U.S. Environmental Protection Agency. Overview/Soils Washing Technologies for
       CERCLA, RCRA, and LUST Site Remediation (available from Risk Reduction
       Engineering Laboratory, Releases Control Branch, Edison, NJ).
                                         4-25

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                           TABLE OF CONTENTS

Section                                                                 Page

5.0  SOLVENT EXTRACTION 	  5-1

      5.1   TECHNOLOGY DESCRIPTION	  5-1

      5.2   TECHNOLOGY STATUS	  5-2

      5.3   APPLICATIONS 	  5-2

      5.4   TECHNOLOGY STRENGTHS	  5-3

      5.5   TECHNOLOGY LIMITATIONS	  5-3

      5.6   POTENTIAL MATERIALS HANDLING REQUIREMENTS	  5-4

      5.7   EXHIBIT 1 - WASTE CHARACTERISTIC TABLE	  5-5

      5.8   EXHIBIT 2 - DATA FROM THE SEMI-ANNUAL STATUS REPORT ....  5-6

      5.9   EXHIBIT 3 - INNOVATIVE TREATMENT TECHNOLOGIES: SEMI-
           ANNUAL STATUS REPORT - SEPTEMBER, 1991  	  5-7

      5.10  EXHIBIT 4 - INNOVATIVE TECHNOLOGY BEST™ SOLVENT
           EXTRACTION PROCESS  	  5-9

      5.11  EXHIBIT 5 - SITE TECHNOLOGY PROFILE - CF SYSTEMS
           CORPORATION 	 5-11

      5.12  EXHIBIT 6 - SITE TECHNOLOGY PROFILE - DEHYDRO-TECH
           CORPORATION 	 5-13

      5.13  EXHIBIT 7 - SITE TECHNOLOGY PROFILE - SANIVAN GROUP	 5-15

      5.14  EXHIBIT 8 - ENGINEERING BULLETIN:  SOLVENT EXTRACTION
           TREATMENT	 5-17

      5.15  KEY REFERENCE LIST - SOLVENT EXTRACTION	 5-25

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                              5.0  SOLVENT EXTRACTION
5.1
TECHNOLOGY DESCRIPTION
       Solvent extraction uses an organic solvent to separate hazardous organic contaminants
from oily-type wastes, soils, sludges, and sediments, thereby reducing the volume of hazardous
waste that must be treated.  In general, a solvent that preferentially removes hazardous organics is
mixed with the contaminated media to transfer contaminants from the media to the solvent phase.
The contaminants are then separated from the solvent with a temperature or pressure change and
the solvent recycled.  Solvent extraction does not destroy wastes, but is generally used as one in a
series of unit operations, and can reduce the overall cost of managing a particular site. The
process separates the waste into its three constituent fractions:  concentrated contaminants, solids,
and water.
      Pumpable oily sludges and
      soils containing organics
      Solvent (liquified gas or TEA)
      Water
                          Solvent
                         Extraction
Dry solids residual
Extracted organics/oll for
recovery/destruction
Extracted water to be
treated
Solvent to be recycled
                                • Separates and recovers oils
                                 and organics
                                          5-1

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5.2           TECHNOLOGY STATUS
                     Solvent extraction has been selected in RODs at five NPL sites in FY 82 to
                     90.  It was selected for two emergency response actions.

                     At present, two commercial vendors have solvent extraction systems that
                     have been tested at Superfund sites. The CF Systems (CF) extraction
                     system was demonstrated with the SITE program.  The Basic Extractive
                     Sludge Treatment (B.E.S.T.) system, marketed by the Resource
                     Conservation Company (RCC), was used at the CERCLA General Refining
                     Site in Garden City,  Florida. Two other vendors have been accepted into
                     the SITE program: Sanivan has been chosen to remediate Pinette's Salvage
                     Yard in  Maine and Dehydrotech has been selected for the PAB Oil Site in
                     Louisiana.

                     CF has supplied three commercial-scale extraction units and has a Mobile
                     Demonstration Unit  for on-site treatability.

                     RCC has installed commercial, full-scale units and also has a transportable
                     pilot-scale unit for treating  soils and sludges.
5.3           APPLICATIONS
                     Targeted organic contaminants for the Superfund sites for which EPA
                     selected solvent extraction sites include PCBs, VOCs, and
                     pentachlorophenol.

                     The CF unit uses liquified gas (propane and/or butane) and has been tested
                     at a Superfund site contaminated with PCBs in New Bedford Harbor,
                     Massachusetts, and demonstrated at a Texas wood preserving site. The
                     gases, which are liquified by compression and mixed with the waste in an
                     extractor, are capable of dissolving large  quantities of organics. The
                     solvent-organic mixture forms an extract phase which is decanted from
                     remaining solids and water.  The solvent-organic mixture goes to a
                     separation vessel where pressure is decreased, the extraction gas
                     (propane/butane) is vaporized and recycled, and  the extracted organics are
                     collected.

                     The RCC system uses triethylamine (TEA)  as the solvent; this was used to
                     treat acidic, oily PCB-contaminated sludges at the General Refining Site.
                     RCC has also constructed a pilot unit to treat nonpumpable wastes such as
                     soils and contaminated sediments.  TEA has an interesting property of
                     becoming water soluble at temperatures below 65°F (18°C). The cold TEA
                     is mixed with the waste, the solids are released from  the oil/water
                     emulsion, and the solids removed by centrifuge and dried. The solvent-
                     organic fraction is then separated from the  water by heating.
                                            5-2

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5.4           TECHNOLOGY STRENGTHS


              •      Separates organics from the inorganics that remain in the soil.  This allows
                     a determination of the most appropriate method for treating/recycling/
                     disposing of the separate fractions.

              •      Produce dry solids as byproduct.

              •      Can recover oil for reuse.

              •      Generally not limited by high organics or oil concentrations.


                     CF Technology Strengths


                     •      Demonstrated greater than 90 percent removal efficiency for PCB
                            in sediments from New Bedford  Harbor.  Testing was conducted
                            with a pilot-scale unit.
                            Treatability tests indicate potential for use on broad variety of
                            organic contaminants.
                     RCC Technology Strengths
                     •      Wastes do not require heating

                     •      Some heavy metals are converted to the hydroxide form, under
                            alkaline conditions utilized by the process.  The metals are
                            converted to a solid form and exit the system with treated solids.

                     •      Sampling at the General Refining Site showed separation
                            efficiencies often exceeding 98 percent for oil, water, and solids.
                            Organics generally concentrated in the oil fraction.
5.5           TECHNOLOGY LIMITATIONS
                     Organically bound metals can co-extract with organic pollutants,
                     potentially restricting both treatment and recycle options.

                     Water addition may be necessary since wastes must be pumpable.

                     Generally least effective on high-molecular-weight organics and very
                     hydrophilic substances.

                     Presence of water-soluble detergents and emulsifiers  can negatively
                     influence extraction efficiency and treatment throughput.

                     Treatment is likely to be necessary for separated water.
                                            5-3

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                    CF Technology Limitations


                    •      Uses a solvent gas that is flammable.

                    •      Heat must be supplied to waste feeds less than 60°F.


                    RCC Technology Limitations


                    •      Uses solvent that is flammable in the presence of oxygen.  Thus,
                           the field unit requires a safety system utilizing nitrogen blanketing.

                    •      Uses solvent that is toxic to aquatic life and, depending on the
                           disposal method, will probably need to be removed from the solids
                           prior to disposal.

                    •      May require pH adjustment of waste to a pH of approximately 10.


5.6           POTENTIAL MATERIALS HANDLING REQUIREMENTS


              •     Excavation is required.

              •     The waste material must be screened to remove debris and large particles

              •     Size reduction may be needed to achieve a feed size required by the
                    equipment.

                           The CF Systems' unit requires the feed to be less than 1 /8 inch in
                           diameter.

                           The RCC unit can handle material up to  1 inch in diameter.

                           Other solvent extraction technologies require feed material to be no
                           larger than 3/8ths to 1 inch in diameter.

              •     The pH of the waste may require adjustment.  Both the CF process and the
                    RCC process work in alkaline conditions.

                           The RCC unit is effective when the pH is greater than 10.

              •     Water may be added to the  wastes. Solvent extraction processes generally
                    are applied to pumpable wastes.  If the contaminated material is not
                    pumpable, water must be added.

              •     The temperature of the wastes may need adjustment.

                           The CF unit requires the  waste material to be warmer than 60 F.

                           The RCC unit works on material that is cooler than 65 F.

              •     The soil, wash water, and any additives must be mixed to ensure adequate
                    transfer of the contaminants.


                                           5-4

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 5.7
EXHIBIT 1 - WASTE CHARACTERISTIC TABLE
Waste Type:  Soils
Technology:  Chemical Extraction
    Characteristics
  Impacting Process
      Feasibility
                  Reason for Potential Impact
        Data
     Collection
    Requirements
Presence of elevated
levels of volatiles
Particle size greater
than 1/4 inch
pH<10
Presence of high
amounts of
emulsifiers
Metals (e.g.,
aluminum) or other
compounds that
undergo strong
reactions under highly
alkaline conditions

Types of waste
            Volatiles may combine with process
            solvent, requiring an additional separation
            step.

            Equipment used in process not capable of
            handling large particle size. Waste must
            be pumpable.

            TEA (used in BEST process) is weak base
            and will exist in solvent form  only at
            approximately pH > 10.  Wastes with
            lower pH must be pretreated to raise pH.

            Adversely impact oil/water phase
            separation. A greater quantity of solvent
            is required for appropriate treatment.
            Strong reactions may occur during
            treatment process because of caustic
            addition.  The adverse reaction may be
            avoided by using TEA for pH
            adjustment.
            Materials contaminated with heavy metals
            not suitable. Wastes that are reactive with
            carbon dioxide and propane must be
            pretreated.  Wastes containing >200  ppm
            organics and oil concentration up to 40
            percent are  acceptable.
Volatile organic
analysis
Particle size
distribution
pH measurement
Glassware process
simulation to measure
phase separation
characteristics

Analysis for
aluminum
Metals analysis
Source: Technology Screening Guide for Treatment of Soils and Sludges EPA/540/2-88/004
        (1988)
                                          5-5

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5.8
EXHIBIT 2 - DATA FROM THE SEMI-ANNUAL STATUS REPORT
  Selection Frequency*
    NUMBER
    of TIMES
   SELECTED
                                        Solvent Extraction
                                     89
                                FISCAL YEAR
         Data derived from 1982 • 1990 Records of Decision ( RODs ) and anticipated design and
         construction activities.
                                                           September 1991
       Contaminants Treated By Solvent Extraction
   Number
     of
  Superfund
    Sites   l

           0
              PCBs
            PAH
VOCs   Metals   SVOCs  Dloxln
   * Datad0rivod from 1982 ~ 1990 Records of Decision (RODs) and anticipated design and construction
    activities. At some sites, the treatment is for more than one major contaminant.
                                  5-6

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      5.10
    EXHIBIT 4 - INNOVATIVE TECHNOLOGY BEST™ SOLVENT EXTRACTION
    PROCESS
                               United States                Solid Waste And
                               Environmental Protection        Emergency Response
                               Agency                     (OS-220)
                                                                      Directive 9200 5-253FS
                                                                      Novemoer 1989
    v>EPA             Innovative Technology
                               BEST™   Solvent
                               Extraction  Process
    TECHNOLOGY DESCRIPTION
    
        Solvent extraction is potentially effec-
    tive in treating oily sludges and soils by
    separating the media into three fractions:
    oil, water, and solids. As the fractions sepa-
    rate, certain contaminants are concentrated
    into specific phases. For example, PCBs
    concentrate in the oil fraction, while metals.
    unless organically bound, accumulate in the
    solids fraction. Individual phases can then
                                        and water in the feed simultaneously solvate
                                        with the cold TEA creating a homogeneous
                                        mixture.  As the solvent breaks the oil-
                                        water-solid bonds, the solids are released
                                        from the emulsion. These solids are subse-
                                        quently removed by centhfuging. which en*
                                        sures submicron particles are removed. The
                                        solids are passed to a second mixing tank
                                        where they are washed with additional sol-
                                        vent and centnfuged a second time. The wet
                                        solids (about 50% solids by weight) are sent
                   Figure 1:  Schematic Diagram of a Typical BEST*
                                Treatment Facility
    
     be treated more efficiently. Solvent extrac-
     tion u capable of processing the oily wasaea
     shown in Tablet. Table 2 lisa the effective-
     ness of solvent extraction oa general con-
     taminant groups.
        One type of solvent extraction, BEST™
     treatment, is a mobile sol vent extraction sys-
     tem developed by Resources Conservation
     Company (ROC). This system uses one or
     more secondary or tertiary arainet (usually
     trieihy lamine (TEA)] to separate toxic wastes
     and oils from sludges or soils. The BEST1"
     technology is based on the fact that TEA is
     miscible in waasr at temperatures below
     65*F.
        A typical process diagram for the BEST1"
     piuccai is shown in Figure 1. This praceea
     h»yiiM Ky miring «nH «y
    -------
     ment Other advantages of the BEST™ technology include the pro-
     duction of  dry solids, the recovery and reuse of oil.  and waste
     volume reduction. BEST™ does not. however, reduce contaminant
     toxicity.  Furthermore, implementation can require complex engi-
     neering considerations.
    
     SITE CHARACTERISTICS AFFECTING TREATMENT
     FEASIBILITY
    
         The BEST™ process is not limited by organics or oil concen-
     trations. Performance, however, can be influenced by the presence
     of detergents and emulsifiers, low pH materials, and reactivity of the
     sludge with the solvent  Other factors  that affect feasibility and
     actions to minimize these affects are listed in Table 3. Treatability
     tests should be conducted to determine the effectiveness  of the
     treatment on specific site conditions.
                              Tab* 3
          SKs-Scwcif le Characteristics and Impacts on BEST™
        tatpidtnj ProoMt
    Pnttoci of MRfsMd MvtBi|
     Pandodaratvo^a*
     than 0.25 «n»
     pHl«i than 10
    PnMnaoth0iarourts
    ofmtfin
    
    Comooundiiriit intenjB
    smngrMcaoniuio*
    hjgtty ataiw cofldJODW
                             (••crater
         I (fliy convni vvi
    Egutwvt uMd n precHi not
    aeatMOfhandinjIarai
    pandoi
    
    TEA (i«td numaan
    pncast)s«MkbiH*nd«l
    not ttflt n so^fwt ranti it pn
    iMlMnlO
    
    AdMnKraflKtoaAisw
    phnMcanoon
    
    StrengiMcsommqr occur
                     ol
                       sufaMa w cnvflDi
                       (
    
                       BncflMfc)
                                               Acton to
                                             Htttatetopac*
                                           UManadoteflalMparatan
                                          Sewn MSH to IWTOM iirgi
                                          paMMorcnsfifla
                                          najat pH ol
                                          cautciodi
                                           Ira** quvny ot soft**
                                           RMpHdnsftMhTEA
                                                ot
                                           Cenftctprcandtor
    TECHNOLOGY CONSIDERATIONS
    
        TEA is flammable in the presence of oxygen, therefore, the
    treatment system must be sealed from the atmosphere and operated
    under a nitrogen blanket Also. TEA is known to be toxic to aquatic
    life and. depending on the disposal method, may need to be removed
    from the solids. Prior to treatment it is necessary to raise the pH to
    greater than 10. creating an environment where TEA is subk. This
    may be accomplished by adding either sodium hydroxide or TEA.
    (Sodium hydroxide is more cost-effective, however, TEA  is lea
    reactive.) It may also be necessary » add water or sol vent to the feed
    to create a slurry capable of being pumped.
                                                                    Additionally, pre-treaunem may require screening of the feed
                                                                to ensure that panicles are all less than 0.25 inches. Because the
                                                                equipment is incapable of handling large diameter panicles, feed
                                                                may be passed through a 2-inch screen and subsequently crushed m
                                                                a 02-inch hammermill.
                                                                    Further treatment of by-products may be necessary before dis-
                                                                posal. Specifically, wastewater treatment may include carbon ad-
                                                                sorption or biological treatment to remove residual organics. Chemi-
                                                                cal precipitation also may be required to remove soluble metal con-
                                                                taminants. Free water from sludge ponds may either be treated with
                                                                the sludge or may be treated separately. In addition, waste oil may
                                                                either be recycled or reused  as fuel.  If neither option is viable, the
                                                                oil should he tested to determine appropriate treatment, storage, or
                                                                disposal actions.  ' «*t  leachate tests  should be conducted on
                                                                residual solids to determine if stabilization is necessary before
                                                                disposal.  Other post-treatment alternatives for solids may include
                                                                thermal stripping, wet air oxidation, in-situ vitrification, soil wash-
                                                                ing, and/or glycolate dehalogenanon.
                                                                    RCC quotes the cost of treatability studies to be $4,500 for 1 kg
                                                                of non-PCB contaminated wastes and 55,500 for 1 kg of waste con-
                                                                taining PCBs.  These costs include three extractions and do not
                                                                include organic analyses. Treatment costs range from S90Aon for a
                                                                large facility treating 200 tons/day to S280/ton for a small facility
                                                                treating 30 tons/day. More information about RCC can be found in
                                                                Table 4.
                                                                                         Tabt»4
                                                                                BEST™ Vendor Information
    Company
    RaMuroH Cawrvalton Co.
    Contact
    PtulMcGou^i
    Addrn*
    300« NontHjp Way
    B^viM.WA 96004
    (206)828-2400
    Note BESr** <•§ MMH04 iM pM»M Br r>«iamMi Centnman Co
                                                                TECHNOLOGY STATUS
    
                                                                    The first full-scale BEST™ unit was used at the CERCLA
                                                                General Refining Site in Garden City. Georgia. Further information
                                                                issummanzed in TableS. Solventextraction is the selected remedial
                                                                action for the Pineoe's Salvage site and the F. O'Connor site, both
                                                                located in Maine; the actual process has not yet been determined.
                                                                    The BEST™ process has been selected for evaluation under the
                                                                SITE Ptugram. Formal demonstration and  testing is being post-
                                                                poned unnl the developer has obtained funding for a demonstration
                                                                at an appropriate site.
    
                                                                OFFICE OP RESEARCH AND DEVELOPMENT CONTACTS
    
                                                                    For more information regarding the BEST™ technology, con-
                                                                tact Edward Bates, U.S. EPA, Risk Reduction Engineering Labora-
                                                                tory, Cincinnati, Ohio 45268. (513) 569-7774 or FTS 684-7774.
                                                                                          TabtoS
                                                                              BEST™ Startus at CERCLA Sits*
                                                                  aj.04.GananlMnni.QA
                                                                                                                   1.700 M>
                                                            5-10
    

    -------
     5.11
    EXHIBIT 5 - SITE TECHNOLOGY PROFILE - CF SYSTEMS CORPORATION
    Technology Profile
                     DEMONSTRATION
                          PROGRAM
                             CF SYSTEMS CORPORATION
                                    (Solvent Extraction)
    TECHNOLOGY DESCRIPTION:
    
    This technology uses liquified gas solvent to
    extract organics (such as hydrocarbons), oil,
    and grease from wastewater or contaminated
    sludges and soils. Carbon dioxide is the gas
    used for aqueous  solutions, while  propane
    and/or butane is used for sediment, sludges
    and soils (semisolids).
    
    Contaminated solids, slurrys or wastewaters
    are fed into the extractor (Figure 1).  Solvent
    (gas condensed by compression) is also fed to
    the extractor, making nonreactive  contact
    with the waste.  Typically, more  than 99
    percent of the organics are separated from
    the feedwaste.  Following phase separation
    of the solvent and organics, treated water is
    removed from  the  extractor  while  the
    mixture of solvent and organics passes to the
    separator through a valve, where pressure is
    partially  reduced.   In  the separator,  the
    solvent is  vaporized and recycled  as fresh
    solvent. The organics are drawn off from
    the separator, and either reused or diposed.
                                  The . extractor  design  is   different  for
                                  contaminated wastewaters and semisolids.  For
                                  wastewaters, a tray tower contactor is used.
                                  For semisolids, a series of extractor/decanters
                                  operating counter-currently is used.
                                  WASTE APPLICABILITY:
    
                                  This  technology  can  be  applied  to  waste
                                  containing carbon tetrachloride, chloroform,
                                  benzene, naphthalene, gasoline, vinyl acetate,
                                  furfural, butyric acid, higher organic  acids,
                                  dichioroethane,  oils  and  grease,  xylene,
                                  toluene,  methyl  acetate,  acetone,  higher
                                  alcohols, butanol, propanol, phenol, heptane,
                                  PCBs and other complex organics.
                                  STATUS:
    
                                  The  pilot-scale system was tested on  PCB-
                                  laden sediments from the New Bedford (Mass.)
                                  Harbor Superfund site during September 1988.
                       Sediment*
                            m
                       Extractor
                                        Separator
    
                                      Clean
                                      Sediment!
                                                        Organlct
                                 Flfin-e 1.   Solvent extraction wilt
                    TeChn0l°8y Evaluation
                                                               ••  Technology Profiles
                                          5-11
    

    -------
    PCB concentrations in the harbor ranged
    from  300  ppm  to  2,500  ppm.    The
    Technology  Evaluation Report (TER) was
    published  in  early  1990   (EPA/540/5-
    90/002).
    
    Commercial systems have been sold to Clean
    Harbors,  Braintree,  Massachusetts,   for
    wastewater clean-up;  and Ensco of Little
    Rock,   Arkansas,   for   incinerator
    pretreatment.  A unit is in operation at Star
    Enterprise, Port Arthur, Texas, treating API
    separator sludge to meet Best  Demonstrated
    and Available Technology (BOAT) standards
    for organics.
    DEMONSTRATION RESULTS:
    
    This   technology   was   demonstrated
    concurrently with dredging studies managed
    by  the U.S. Army  Corps  of Engineers.
    Contaminated sediments were treated by the
    CF Systems  Pit  Cleanup  Unit,  using a
    liquified propane and butane mixture as the
    extraction solvent.
    
    The following test results include the number
    of passes  made  during each test and  the
    concentration of PCBs before and after each
    test:
    Test 2
    
    Tect3
    
    Tect4
     PCB concentration
    Befog      After
    
    360 ppni    8 ppni
    
    288 ppm    82 ppm
    
    2575 ppm    200 ppm
    Extraction efficiencies were high, despite
    some operating difficulties during the tests.
    The use of treated sediment as feed to the
    next pass caused cross-contamination in the
    system.  Full scale commercial systems are
    designed to  eliminate problems  associated
    with the pilot plant design.
                               APPLICATIONS ANALYSIS
                               SUMMARY:
    
                               The following conclusions were drawn from
                               this series of tests and other data:
    
                               •  Extraction efficiencies of  90-98% were
                                  achieved on sediments containing between
                                  350   and   2,575  ppm  PCBs.     PCB
                                  concentrations were as low as 8 ppm in the
                                  treated sediment.
    
                               •  In the laboratory, extraction  efficiencies
                                  of 99.9% have been obtained for volatile
                                  and semivolatile organics in aqueous and
                                  semi-solid wastes.
    
                               •  Operating problems included solids being
                                  retained  in  the  system hardware  and
                                  foaming in receiving tanks.  The vendor
                                  identified  corrective measures that will be
                                  implemented  in the full-scale  commercial
                                  unit.
    
                               •  Projected  costs  for PCB  cleanups  are
                                  estimated  at approximately $150 to $450
                                  per ton, including material handling and
                                  pre- and post-treatment costs.  These costs
                                  are highly sensitive to the utilization factor
                                  and job size, which  may result in lower
                                  costs for large cleanups.
    FOR FURTHER INFORMATION:
    
    EPA Project Manager
    Laurel Staley
    U.S. EPA
    26 West Martin Luther King Drive
    Cincinnati, Ohio 45268
    513-569-7863
    FTS:  684-7863
    
    Technology Developer Contact:
    Chris Shallice
    CF Systems Corporation
    140 Second Avenue
    Waltham, Massachusetts  02154
    617-890-1200 (ext. 158)
                                             5-12
    

    -------
     5.12
    EXHIBIT 6 - SITE TECHNOLOGY PROFILE - DEHYDRO-TECH
    CORPORATION
    Technology Profile
                      DEMONSTRATION
                          PROGRAM
                          DEHYDRO-TECH CORPORATION
               (Carver-Greenfield Process for Extraction of Oily Waste)
    TECHNOLOGY DESCRIPTION:
    
    The Carver-Greenfield Process* is designed
    to separate materials into their constituent
    solid, oil (including oil-soluble substances),
    and water phases.  It is primarily intended
    for soils and sludges contaminated with oil-
    soluble   hazardous  compounds.      The
    technology uses a food-grade "carrier oil" to
    extract the oil-soluble contaminants (Figure
    1).   Pretreatment  is necessary to achieve
    particle sizes less than 3/8-inch.
    
    The  carrier  oil,  with a  boiling  point of
    400*  F, typically is  mixed with waste sludge
    or soil and  the  mixture  is placed  in the
    evaporation system  to remove any  water.
    The  oil  serves to  fluidize the  mix  and
    maintain  a low slurry viscosity to  ensure
    efficient heat transfer, allowing virtually all
    of the water to evaporate.
                                   Oil-soluble contaminants are extracted from
                                   the waste  by  the  carrier  oil.    Volatile
                                   compounds present  in the  waste  are  also
                                   stripped in this step  and condensed with the
                                   carrier oil  or  water.   After the  water  is
                                   evaporated  from the mixture, the  resulting
                                   dried slurry is sent to  a centrifuging section
                                   that removes most of the carrier oil from the
                                   solids.
    
                                   After  centrifuging,  residual carrier  oil  is
                                   removed by a  process known as "hydroex-
                                   traction."  The  carrier oil is recovered by
                                   evaporation  and  steam  stripping.    The
                                   hazardous constituents  are removed from the
                                   carrier oil by distillation. This stream can be
                                   incinerated or reclaimed. In some cases, heavy
                                   metals in the solids  will be complexed with
                                   hydrocarbons and will also be extracted by the
                                   carrier oil.
                         Figure 1. Simplified Carver Greenfield process flow diagram.
    Source: The Superfund Innovative Technology Evaluation Program: Technology Profiles,
           EPA/540/5-90/006 (1990).
                                           5-13
    

    -------
    WASTE APPLICABILITY:
    
    The Carver-Greenfield process can be used
    to treat sludges,  soils, and  other  water-
    bearing   wastes  containing  oil-soluble
    hazardous   compounds,  including   PCBs,
    PNAs, and dioxins.  The  process has been
    commercially  applied   to  municipal
    wastewater  sludge,  paper  mill   sludge,
    rendering   waste,   pharmaceutical  plant
    sludge, and many other wastes.
    STATUS:
    
    The process has been successfully tested in
    a pilot plant on refinery "slop oil," consisting
    of 72 percent water, as well as on a mixed
    refinery waste consisting of dissolved air
    flotation sludge, API separator bottoms, tank
    bottoms, and biological sludge. EPA has
    identified the PAB Oil site in Louisiana as a
    potential   site   for   demonstrating  this
    technology.   The  PAB oil  site contains
    petroleum wastes and contaminated soils, and
    a SITE demonstration is tentatively planned
    for January 1991.
    FOR FURTHER INFORMATION:
    
    EPA Project Manager
    Laurel Staley
    U.S. EPA
    26 West Martin Luther King Drive
    Cincinnati, Ohio  45268
    513-569-7863
    FTS:  684-7863
    
    Technology Developer Contact:
    Thomas C. Holcombe
    Dehydro-Tech Corporation
    6 Great Meadow Lane
    East Hanover, New Jersey 07936
    201-887-2182
                                             5-14
    

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     5.13
    EXHIBIT 7 - SITE TECHNOLOGY PROFILE - SANIVAN GROUP
    Technology Profile
                       DEMONSTRATION
                           PROGRAM
                                     SANIVAN GROUP
                              (Soil Treatment with Extraksol)
    TECHNOLOGY DESCRIPTION:
    
    Extraksol is a  mobile  solvent  extraction
    technology.   This  batch  process  extracts
    organic contaminants from  the  soil  using
    nonchlorinated,   non-persistent   organic
    solvents.  The solvents are regenerated by
    distillation  and   the   contaminants   are
    concentrated in the distillation residues.
    
    The three treatment steps  -- soil washing,
    soil  drying, and solvent  regeneration —
    occur on a flatbed  trailer.  The  extraction
    fluid (solvent) is  circulated through  the
    contaminated matrix within a tumbling vat
    to wash the soil. Controlled temperature and
    pressure optimize  the washing  procedure.
    Hot inert gas dries the soil.
                                    The gas vaporizes the residual extract fluid
                                    and carries it from  the  tumbling  vat  to  a
                                    condenser,  where  the  solvent  is  again
                                    separated from the gas.  The  now solvent-
                                    free gas is reheated and reinjected into the soil
                                    as required for complete  drying.  After the
                                    drying cycle, the decontaminated soil may be
                                    returned to its original location.
    
                                    Distillation of  the  contaminated  solvent
                                    achieves  two   major  objectives:    (1)  it
                                    minimizes  the amount of  solvent required to
                                    perform the extraction by  regenerating it in a
                                    closed loop, and (2) it significantly reduces the
                                    volume of contaminants  requiring  further
                                    treatment or off-site disposal by concentrating
                                    them in the still bottoms.  A schematic of the
                                    process is shown in Figure 1.
                                                                Contimmmd Sofrtrt
                    ExtncManCyd*
    
                    Drying Cycb
                                                                         BoawmTo
                                                                       DUpoul / Recycling
                      Figure 1. Simplified Schematic of Extraksol ™ Process
     Source: The Superfund Innovative Technology Evaluation Program:  Technology Profiles
           EPA/540/5-90/006 (1990).
                                           5-15
    

    -------
    WASTE APPLICABILITY:
    
    The process extracts organic contaminants
    from solids. It has been successfully tested
    in a number of pilot projects on a range of
    contaminants,  including PCBs,  PCP, PAH,
    MAH,  pesticides, oils, and  hydrocarbons.
    The  process   has   the  following   soil
    restrictions:
    
         Maximum clay fraction, 40%
         Maximum water content, 30%
         Maximum size if porous material, 2
         inches
         Maximum size if non-porous material,
         1-2 feet
    STATUS:
    
    This technology was accepted into the SITE
    program in June 1990.
    FOR FURTHER INFORMATION:
    
    EPA Project Manager
    Mark Meckes
    U.S. EPA
    Risk Reduction Engineering Laboratory
    26 West Martin Luther King Drive
    Cincinnati, Ohio 4S268
    513-569-7348
    FT&  684-7348
    
    Technology Developer Contact
    Peter Z. Colak
    Sanivan
    7777 Boulevard L.H. Lafontaine
    Anjou (Quebec)
    H1K 4E4
    514-355-3351
                                           5-16
    

    -------
           5.14
    EXHIBIT 8 - ENGINEERING BULLETIN:  SOLVENT EXTRACTION
    TREATMENT
                               UnJed Slate*
                               Environmental Prelection
                                    Offto*) of Emergency and
                                    Remedial Re*ponea>
                                    Waattngjon. DC 20460
    Offinol
    Reeearch and Development
    Cincinnati, OH 45268
                               Supertund
                                                               September 1990
                               Engineering Bulletin
                               Solvent Extraction Treatment
     Purpos*
    
        Sectk>n 121(b) of the  Comprehensive Environmental
     Response, Compensation, and Liability Act (CERCIA) mandates
     the Environmental Protection Agency (EPA) to select remedies
     that "utilize permanent solutions and alternative treatment
     technologies or resource recovery technologies to the maximum
     extent practicable' and to prefer remedial actions in which
     treatment •permanently and significantly reduce the volume,
     toxicity, or mobility of hazardous substances, pollutants and
     contaminants as a principal  element.*  The  Treatment
     Technology Bulletins are i series of documents that summarize
     the latest information available on selected treatment and site
     remediation technologies ind related issues. They provide
     summaries of and references for the latest information to help
     remedial project managers, on-scene coordinators, contractors,
     and other site cleanup managers understand the type of data
     and site characteristics needed to evaluate a technology for
     potential applicability to their Suoerfund or other hazardous
     waste site. Thosedocuments that describe individual treatment
     technologies focus on remedial investigation scoping needs.
     Addenda will be issued periodically to update the original
     bulletins.
    Abstract
    
        Solvent extraction does not destroy wastes, but is a means
    of separating hazardous contaminants from soils, sludges, and
    sediments, thereby reducing the volume of the hazardous
    waste that must be treated. Generally It Is used as one in a series
    of unit operations, and can reduce the overall cost for managing
    a particular site.  It is appflrabte to organic wastes and is
    generally not used for treating Inorganics and metals [IS,
    p.64].*  The technology uses an organic chemical as a solvent
    [14, p. 30], and differs from sol washing, which generally uses
    water or water with wash Improving addMives. During 1989,
    the technology was oneof the selected remedies at six Suoerfund
    sites. Commercial-scale units are in operation. There is no clear
    solvent  extraction technology leader by virtue of the solvent
    employed,typeofequipmcntused.ormodeor'operation. The
    final determination of the lowest cost alternative will be more
    site specific than process equipment dominated. Vendors should
    be contacted to determine the availability of a unit for a
    particular site. This bulletin provides information  on the
    technology applicability, the types of residuals produced, the
    
    * [rvhrtnct number, page number]
                                       latest performance data, site requirements, the status of the
                                       technology, and sources for further information.
                                       Technology Applicability
    
                                           Solvent extraction has been shown to be effective in
                                       beating sediments,  sludges, and soils containing  primarily
                                       organic contaminants such as polychlorinated biphenyls (PCS),
                                       volatile organic compounds (VOC), halogenated solvents, and
                                       petroleum wastes. The technology is generally not used for
                                       extracting inorganics (I*-, acids, bases, salts, heavy metals).
                                       Inorganics usually do not have a detrimental effect on the
                                       extraction of the organic components, and sometimes metals
                                       that pass through the process experience a beneficial effect by
                                       changing the chemical compound to a less toxic or leachable
                                       form. The process has been shown to be applicable for the
                                       separation of the organic contaminants in paint wastes, synthetic
                                       rubber process wastes, coal tar wastes, drilling muds, wood
                                       treating wastes, separation sludges, pesticide/insecticide wastes,
                                       and petroleum refinery oily wastes [3].
    
                                           Table 1 fists the codes for the specific Resource Conservation
                                       and Recovery Act (RCRA) wastes that have been treated by this
                                       technology [3][1, p.11 ]. The effectiveness of solvent extraction
                                       on general contaminant groups for various matrices is shown
                                       In Table 2 [13, p.1] [ 15, p.10]. Examples of constituents within
                                       contaminant groups are provided In Reference 16, Technology
                                       Screening Guide for Treatment of CEftCU Soils and Sludges.*
                                       This table Is based on the current available information or
                                       professional  judgment where no information was available.
                                       The proven effectiveness of the technology for a particular site
                                       or waste does not ensure that It w« be effective at all sites or that
                                       the treatment efficiencies achieved will be acceptable at other
                                       sites.   For the ratings  used for this table, demonstrated
                                       effectiveness means that, at some scale treatabifity was tested
                                       to show the  technology was effective for that  particular
                                       contaminant and matrix. The ratings of potential effectiveness,
                                       or no expected effectiveness an both  based upon expert
                                       judgment  Where potential effectiveness is indicated, the
                                       technology  is believed capable of successfully treating the
                                       contaminant group in a particular matrix. When the technology
                                       is not applicable or  will probably not work for a particular
                                       combination of contaminant group and matrix, a no-expected-
                                                       5-17
    

    -------
    effectiveness rating is given.  Another source of general
    observations and average  removal efficiencies for different
    treatabilHy groups a contained in the Superfund ID* Guide
    i«A 'ObtaWng a Sod «nd Debris Treatabiflty Variance for
    Remedial Actions.' (OSWEK Directive 9347.3-06FS) [17] and
    Superfund ID* Guide fol,  "Obtaining a Soil and Debris
    Treatibility Variance for Removal Actions* (OSWER Directive
    9347.J-07FS) [If].
                          Tobtel
               •CKA CodM for Watte* Trcoitxl
                    ty Solvent Extraction
    wood Treating Wanes
    Water Treatment Skjdgei
    Phiofced Mr flotation (OAF) Ftoet
    Slop 01 bnuMon Solids
    
    Separator Sludge
    Tank Bottom* (leaded)
    Ammonia Stfl Sludge
    Decanter Tar Sludge
    
    K001
    K044
    KfrU
    K049
    K050
    KOS1
    K052
    KMO
    K0*4
    KM9
    K101
                          Tab* 2
             Otocttveoeo of Solvent fatioclien on
               Central Contaminant Groupe for
                 Sof. Sludge), and Sexa
    
    
    
    }
    }
    j
    j
    Bj
    
    -------
     neve • competent source conduct • laboratory ,-jl« trwubinty
     test to determine whether mass transftr or equilibrium will be
     controlling. Tht controlling factor is critical to the design of tht
     unit and to the determination of whether the technology is
     appropriate for the waste.
    
        The extracted organic! are removed from the extractor
     with the solvent and go to the separator (3), where the pressure
     or temperature is changed, causing the organic contaminants
     to separate from the solvent [9, p. 4-2].
    
        The solvent is recycled (4) to the extractor and  the
     concentrated contaminants (5) are removed from the separator
     Process Residuals
    
        There arc three main product streams generated by this
     technology: the concentrated contaminants, the treated soil or
     sludge, and the separated water. The extract contains solvent-
     free contaminants, concentrated into a smaller volume, for post
     treatment.  The recovered contaminants may require analysis
     to determine their suitability  for recycle, reuse, or further
     treatment before disposal.
    
        The cleaned soil and solids from treated sludge or sediments
     may need to be dewatered, forming a dry solid and a separate
     water stream. The volume of product water depends on the
     inherent dewatering capability of the individual process, as well
     as the process-specific requirements for feed slurrying. Since
     the solvent is an organic material, some residue may remain in
     the soil matrix. This can be mitigated by solvent selection, and
     if necessary, an additional separation stage. Depending on the
     extent of metal or other inorganic contaminants, treatment of
     the cleaned solids by some other technique (i.e., stabilization)
    may be necessary.  Snce the organic component has been
    separated, additional solids treatment should be simplified.
    The water produced should be analyzed to determine if treatment
    is necessary before discharge.
    
        Solvent extraction units are designed to operate without
    air  emissions.   However, volatile air  emissions could occur
    during waste preparation.
    Site Requirements
    
        Solvent extraction  units  are  transported  by trailers.
    Therefore, adequate access roads are required to get the unit to
    the site.  Typical commercial-scale units, 50-70 tons per day
    (tpd). require a setup area of up to 3,600 square feet
    
        Standard 440V three-phase electrical  service is needed.
    Water must be available at the site [3).  The quantity of water
    needed is vendor and sit* specific
    
        Contaminated soils or other waste materials are hazardous
    and their handling requires that a site safety plan be developed
    to provide for personnel protection and special  handling
    measures. Storage should be provided to hold  the process
    product streams until they have been tested to determine their
    acceptability for disposal or release. Depending upon the site,
    a method to store wast* that has been prepared for treatment
    may be necessary. Storage capacity will  depend  on waste
    volume.
    
        Onsite analytical equipment for conducting oil and grease
    analyses and a gas chromatograph capable of determining site-
    specific organic compounds for performance assessment make
    the operation more efficient and provide better information for
    process control.
                                            Hgw» 1. Sofvwtt Extraction Froeeea
                                                                                           Treated Emissions
                                                                                              Concentrated
                                                                                              Contaminants (S)
    
                                                                                              SoMs
                                                                                              Water
                                                                                              Oversized Rejects
    Englnwing Bulletin: Solvent extraction 7r+atm*nt
                                                         5-19
    

    -------
    Performance Data
        The performance data currently available art mostly from
    two vendors, CF Systems and Resource Conservation Company
    (RCO.
    
        CF Systems' full-scale S0»tpd commercial unit (PCD 200),
    which is treating refinery sludge at Port Arthur, Texas, meets or
    exceeds the EPA's Best Demonstrated Available Technology
    (BOAT) standards for • number of organic contaminants (Table
    3) [3J.
                           Table. J
                 AH Separator Sbdgi
                  (Concemlraflom In mg/kg)
                                      •Mr
                         Canamtrettov  fere*
      •enaww
      ToJuem
      XytafMt (Total)
      Anthracene
      l*nio(a)enihncene
      lenn
    <0.0
    <0.03
    <0.05
    5J
    O.OOa
                                                                  Source: PI NCC, 100 tpd
                                                           engineering BuMIn: Solvent extraction Treatment
                                                        5-20
    

    -------
        RCC hu bench-scale treatability data on • variety of
    waste, including steel mill wastewater treatment sludge and
    oil refinery sludge (Table 6) [1, p. 12], that will Illustrate the
    degree of separation possible among the oil, water, and solids
    components of the waste. The separation of PCBs  in
    contaminated harbor sediments ts shown in Table 7 and in a
    variety of matrices in Table 8.  Results of treatment of pesticide-
    contaminated soils are shown in Table 9.
    
        RCRA Land  Disposal Restrictions (LDRs)  that require
    treatment of wastes to BOAT levels poor to land disposal may
    sometime be determined to be applicable or relevant and
    appropriate requirements (ARAAs) for CERCLA response actions.
    The solvent extraction technology can produce a treated waste
    that meets treatment levels set by BOAT, but may not reach
    these treatment levels in all cases. The ability to  meet required
    treatment levels  is dependent upon the specific waste
                               constituents and the waste matrix.  In cases where solvent
                               extraction does not meet these levels, It still may, in certain
                               situations, be selected for use at the site if a treatability vanance
                               establishing alternative treatment levels is obtained.  EPA h«
                               made the treatability variance process  available in  order to
                               ensure that  LDfts do not unnecessarily restrict the use of
                               alternative and innovative treatment technologies. Treatability
                               variances may be justified for handling complex soil and debns
                               matrices. The following guide describe when and how to seek
                               a treatability variance for soil and debris: Superfund LDR Guide
                               •6A, "Obtaining a Soil and Debris Treatability Variance for
                               Remedial Actions' (OSWER Directive 9347.3-06fS) [17], and
                               Superfund ID* Guide f6S,  'Obtaining a  Soil  and Debris
                               Treatability Variance for Removal Actions' (OSWER Directive
                               9347.3-07FS) [18]. Another approach could be to use other
                               treatment technique in serie with solvent extraction to obtain
                               desired treatment levels.
                           Tab* A
                   OB and Greet* Removal
                         tench Scale)
    Onglnal Sludge
    Conctntrition
    01%
    Water %
    Solids %
    
    *Tp99%
           Sourer RCC, 6 kg Batch
                                                           Solvent Extraction Systems
    
                                                               Solvent extraction  systems  are at  various stage of
                                                           development. The following Is a brief discussion of six systems
                                                           that have been identified.
    
                                                               CF Systems use liquefied hydrocarbon  gase such as
                                                           propane  and  butane as solvents  for separating organic
                                                           contaminants from soils, sludge, and sediments. The extraction
                                                           units an liquid-filled systems that employ pumps to move the
                                                           material through the system. As such, the feed material is
                                                           pretreated, through  the  addition of water,  to ensure the
                                                           •pumpabaity* of the material [10, p. 121.  The pH of the feed
    Engineering Bulletin: Solvent Extraction
                                                           5-21
    

    -------
                                                          Tablet •
                                 PCS Samptae Teeted In BCC» Laboiotory (1/17 through 7/M)
    Cfanr
    SLUDGES
    CM
    CM
    CM
    SufMrftjnrf Stt Sh
    SufMriundSteCO'A*
    SuMrfand SIM C0 1'
    Sup«ft«*Si»CO*C'
    SEDIMENTS
    •Mr Sediment TT
    Suptrfundl(f13)
    Hvbcr S«dim«« •§•
    Harbor StdJnwnt* C*
    Harbor Sediment *D*
    Harbor Sediment NB-A
    Harbor Sadimant NM
    SOU
    MutiHalSoilA
    MutfrialSoiil
    Industrial Sofl D
    Industrial Soft |
    Attic***
    •CB
    <"*»•>
    
    5.9
    4.7
    5.3
    106
    51
    21
    11
    
    MO
    •3
    20,000
    30,000
    430
    5,800
    16,500
    
    250
    120
    5,300
    19
    taw Sample Phas* Competition
    Ot % Water % Sotids %
    
    27 66 7
    10 54 32
    13 57 30
    35 44 21
    49 21 23
    23 24 53
    15 16 69
    
    2« 17 S3
    44 40 16
    3 22 75
    5.6 62 32
    0.3* 47 53
    1.9 69 29
    4.3 51.6 44.1
    
    0.06 9.4 91
    0.06 13 «7
    1.0 19 10
    .09 16 84
    Kit In Product Fraction
    Ofl Wat* Solids HKamoMl
    (•"•A* <"•/»•> (mart*
    
    9.3 <.005 <-01 99.9%
    N/A <.01 0.015 99.9%
    N/A O1 0.14 99.2%
    270 N/A 1.0 99.1%
    •0 N/A 0.44 99.1%
    71 N/A 0.08 99.1%
    52 N/A 0.06 99.6%
    
    N/A N/A 40 96.5%
    N/A N/A 1.0 99.8%
    970,000 <.006 27 99.9%
    550,000 N/A 94 99.9%
    N/A N/A 32 96.0%
    280,000 <.OOS 35 99.4%
    360,000 <.005 75 99.8%
    
    120,000 N/A 2.2 99.1%
    280,000 N/A 6.4 94.7%
    370,000 N/A 11 99.8%
    10,000 N/A 0.7 M.3%
        Sara: RCC. .6 kg latch
    may be adjusted,  through the addition of limt or a similar
    material, to maintain the metallurgical integrity of the system.
    Typicaly, the feed material is screened to remove particles of
    greater than 1/8* diameter. Depending upon the nature of the
    oversize material, the large particles may be reduced in size and
    then returned to the extraction unit for processing.
    
        CF Systems' extraction technology has been demonstrated
    in the field at two  Superfund sites and approximately 10
    refineries and treatment, storage, and disposal (TSO) facilities
    to date.
    
        CF Systems' solvent extraction technology is available in
    several commercial sizes and the Mobile Demonstration Unit is
    available for onsite treatability studies. To date, CF Systems has
    supplied three  commercial-scale extraction units for the
    treatment of  a  variety of wastes [12, p. 3-12].  A 60-tpd
    treatment system was designed to extract organic liquids from
    a broad range of hazardous waste feeds at ENSCCXs El Dorado,
    Arkansas, incinerator facility.  A commercial-scale extraction
    unit is being installed at a facility in Baltimore, Maryland, to
    <«move organic contaminants from  a 20-gpm wastewater
    stream. A PCU-200 extraction unit is installed and operating at
    the Star Enterprise (Texaco) refinery in Port Arthur, Texas. This
    unit is designed to treat listed refinery wastes to meet or exceed
    the EPA's BOAT standards. Performancedata and the technology
    status are explained in the body of this bulletin.
    
        RCCs B.E.S.T.™ system uses aliphatic amines (typically
    triethylamine) as the solvent to  separate and  recover
    contaminants [1> P- 2]. It is applicable to soils, sludges, and
    sediments, and in batch mode of operation does not need a
    pumpabie waste. Before the extraction process is begun, feed
    materials are screened to remove particles of greater than 1*
    diameter and pH adjusted to an alkaline condition. The process
    operates at or near ambient temperature and  pressure.
    Triethylamine can be recycled from the recovered liquid phases
    via steam stripping because of Its high vapor pressure and tow
    boiling point azeotrope formation.
    
        RCC has a transportable B.LS.T."' pilot-scale unit available
    to treat soils and sludges. This pilot-scale equipment has been
    used at a gulf coast  refinery treating various  refinery waste
    streams and has treated PCB-contaminated sols at an industrial
    site in Ohio in November 1989. A full-Kale unit with a nominal
    capacity of 70 tpd was used to clean up 3,700 tons of PCB-
                                                             engineering Bulletin: Solvent Extraction Treatment
    
                                                            5-22
    

    -------
     contaminated  petroleum sludge at the General Refining
     Superfund Ste in Savannah, Georgia, in 1987. Performance
     data and the technology status are explained in the body of this
     bulletin.
    
        ENS* is in the process of developing a mobile solvent
     extraction unit capable of decontaminating soils and sludges at
     i rate of 5 to 10 cubic yards/hour [5, p. 1 ]. The ENSR system
     uses a proprietary reagent and solvent The company claims
     that its sotvent extraction system is designed to operate without
     significant pretreatment of the soil/sludge and  without the
     addition or removal of water. Design of a pitot-scale unit is near
     completion.  Thus far, only performance data  from  earlier
     bench-scale tests are available.
    
        The ExtraksoP1 process was developed in 1984 by Sanivan
     Croup, Montreal, Canada [7, p. 35]. It is applicable to soils,
     sludges, and sediments. Performance data on contaminated
     soils and refinery wastes are available for a 1 ton per hour (tph)
     mobile unit The  process uses a proprietary solvent  that
     reportedly achieved removal efficiencies up to 99% (depending
     on the number of extraction cycles and the type of soil) on
     PCBs, oil, grease, PAHs. and pentachtorophend [1, p. 45]. The
     1 -tph unit is suitable for small projects with a maximum of 300
     tons of material to  be treated. The Sanivan group is planning
     to build a full-scale unit that can process 6-8 tph of waste [7, p.
     11].
    
        Harmon  Environmental  Services  and  Acurex
     Corporation are involved in a cooperative joint venture to
    develop a solvent soil washer/extraction system appropriate for
    the onsite remediation of Superfund and RCRA sites. They have
    completed  EPA-sponsored  bench-scale studies on different
    types of soils contaminated with §2fuei oil. Thedesignof a pilot
    plant unit is being considered.
    
        The Low Energy Extraction Process (HEP) is a patented
    solvent extraction process that can  be used onsite for
    decontaminating soils, sludges, and sediments.  LEEP uses
    common hydrophilk  and hydrophobic organic solvents to
    extract and further concentrate organic pollutants such as PCBs
    [2, p. 3J. Bench-scale studies are available. The design of the
    pilot plant is completed, and the plant is sched uled for operation
    at the beginning of 1990.
    EPA Contact
        Technology-specific questions regarding solvent extraction
    may be directed to:
        Michael Gruenfeki
        U.S. EPA, Risk Reduction Engineering Laboratory
        GSA Raritan Depot
        Woodbridge Avenue
        Edison, New Jersey 08837
        FTS 340^625
        (201) 321-4625
                           Tabto 9
               RCC I.E-5.T.™ ThMt«d Pwltcld*-
              Contamlnote99.99
    >99.99
    99^9
    >99.95
    99.97
    .
    
    -
    M.7
                                                                3.
    
                                                                4.
     Sourer. «CC, .6 kg Batch
                     REFERENCES
        Austin, Douglas A.  The B.LS.T.™ Process — An
        Innovative and Demonstrated Process for Treating
        Hazardous Sludges and Contaminated Soils. Presented
        at 81 st Annual Meeting of APCA, Preprint 88-68.7,
        Dallas, Texas, 1988.
        Blank. Z., 8. Rugg,  and W. Stelner.  LEEP-low Energy
        Extraction Process:  New Technology to Decontaminate
        PCB-Contaminated Sites, EPA STTE E02 Emerging
        Technologies Program. Applied Remediation
        Technology, Inc., Randolph, New Jersey, 1989.
        Cf Systems Corporation, Marketing Brochures (no
        dates).
        HaH, Dorothy W., JX Sandrtn, ILL  McBride. An
        Overview of Solvent Extraction Treatment
        Technologies. Presented at A1CHE  Meeting,
        Philadelphia, Pennsylvania, 1989.
        Mauey, MJ., and S. Darian. ENSR  Process for the
        Extractive Decontamination of Soils and Sludges.
        Presented at the PCB Forum, International Conference
        for the Remediation of PCB Contamination, Houston,
        Texas, 1989.
    Engineering Bulletin: Solvent Extraction Treatment
                                                         5-23
    

    -------
                                                 REFERENCES
    6.
    7.
       Mom, John M.. R. Abrishamian.  Us* of Liquified Gas
       Solvent Extraction in Hazardous Waste Site Closures.
       Presentation Paper No. 550, Presented at AICHE
       Summer National Meeting, Denver, Colorado, 1 988.
       Paquin, |., and D. Mourato. Soil Decontamination wKh
       Extrabo). Sanrvan Croup, Montreal, Canada (no date),
    9.
    1 0.
    1 1 .
    1 2.
    13.
       ReMy, TJL, S. Sundaresan, and |.H. Highland.  Cleanup
       of PCS Contaminated Soils and Sludges By A Solvent
       Extraction Process: A Case Study. Studies in
       Environmental Science. 2* 125-139, 1986.
       Row«,G. Evaluation of Treatment Technologies for
       listad Petroleum Refinery Waste, Chapter 4. API
       Wast* Technologies Task Force, Washington, DC,
       1987.  pp. 1-12.
       Technology Evaluation Report — CF Systems Organic*
       Extraction System, New Bedford, MA. Volume I.
       Report to be published.  U.S. Environmental Protection
       Agency.
       Technology Evaluation Report — CF Systems Organics
       Extraction System, New Bedford, MA. Volume II.
       Report to be published, U.S. Environmental Protection
       Agency.
       Analysis of Treatability Data for Soil and Debris:
       Evaluation of Land Ban Impact on Use of Superfund
       Treatment Technologies.  OSWER Directive 93S0.3-04,
       U.S. Environmental Protection Agency, 1 989.
       Innovative Technology: B.E.S.T.1*' Solvent Extraction
       Process: OSWER Directive 9200.5-253FS, U.S.
       Environmental Protection Agency, 1 990.
    14.  Raghavan, R., D.H. Dictz. and L Coles.  Cleaning
         Excavated Soil Using Extraction Agents: A State-of-the-
         art Review. EPA 600/2-89/034, U.S. Environmental
         Protection Agency, Releases Control Branch, Edison, N|,
         1988.
    15.  Technology Screening Guide for Treatment of CERCLA
         Soils and Sludges. EPA/S40/2-M/004, U.S.
         Environmental Protection Agency, 1988.
    16.  Evaluation of the B.E.S.T™ Solvent Extraction Sludge
         Treatment Technology Twenty-Four Hour Test  EPA/
         600/2-88/051, U.S. Environmental Protection Agency,
         1988.
    17.  Superfund LDR Guide §6* Obtaining a Soil and Debris
         TreatabiDty Variance for Remedial Actions. OSWER
         Directive 9347.3-06FS, U.S. Environmental Protection
         Agency, 1989.
    18.  Superfund LDR Guide §68: Obtaining a Soil and 04. *
         Treatability Variance for Removal Actions. OSWER
         Directive 9347.3-07FS, U.S. Environmental Protection
         Agency, 1989.
    19.  ROD Annual Report, FY 1989.  EPA/540/8-90/006, U.S.
         Environmental Protection Agency, 1990.
    20.  Weimer, LD. The B.E.S.T.«• Solvent Extraction  Process
         Applications with Hazardous Sludges, Soils and
         Sediments. Presented  at the Third International
         Conference, New Frontiers for Hazardous Wast*
         Management, Pittsburgh, Pennsylvania, 1989.
    United State
    Environmental Protection
    Agency
                                               Center for Environmental Research
                                               Information
                                               Cincinnati, OH 45268
                                      BUUCRATE
                                 POSTAGE fa FEES PAID
                                          EPA
                                   PERMIT No. C-35
    Official Business
    Penalty for Private Us* $300
                                                             5-24
    

    -------
    5.15          KEY REFERENCE LIST - SOLVENT EXTRACTION
    
    
    U.S. Environmental Protection Agency, 1990. Applications Analysis Report - CF Systems
           Organic Extraction System, New Bedford, MA, EPA/540/A5-90/002.
    
    U.S. Environmental Protection Agency, 1989. Evaluation of BEST™ Solvent Extraction Sludge
           Treatment Technology 24 Hour Test, NTIS PB88-245907
    
    U.S. Environmental Protection Agency, 1989. Innovative Technology: BEST" Solvent Extraction
           Process, OSWER Directive 9200.5-253-FS (Fact Sheet attached).
    
    U.S. Environmental Protection Agency, 1990. Inventory of Treatability Study Vendors,
           Volume 1, EPA/540/2-90/003a.
    
    U.S. Environmental Protection Agency, 1990. Second Forum on Innovative Treatment
           Technologies, Domestic and International, Philadelphia, PA, May 15-17, 1990,
           EPA/540/2-90/006 (Abstracts) or EPA/540/2-90/010 (Technical Papers).
    
    U.S. Environmental Protection Agency, 1990. Technology Evaluation Report - CF
           Systems Organic Extraction System, New Bedford, MA, EPA/540/5-90/002.
    Note:  A more comprehensive bibliography is being developed.
                                             5-25
    

    -------
                               TABLE OF CONTENTS
    
    Section
    
    
    6.0  DECHLORINATION 	  6-1
    
         6.1    TECHNOLOGY DESCRIPTION	  6-1
    
         6.2    TECHNOLOGY STATUS	  6-2
    
         6.3    APPLICATIONS 	  6-2
    
         6.4    TECHNOLOGY STRENGTHS	  6-2
    
         6.5    TECHNOLOGY LIMITATIONS	  6-2
    
         6.6    POTENTIAL MATERIALS HANDLING REQUIREMENTS	  6-3
    
         6.7    WASTE CHARACTERISTICS AFFECTING PERFORMANCE 	  6-3
    
         6.8    BASE-CATALYZED DECOMPOSITION (BCD)	  6-3
    
         6.9    EXHIBIT 1 - WASTE CHARACTERISTIC TABLE	  6-5
    
         6.10  EXHIBIT 2 - DATA FROM SEMI ANNUAL STATUS REPORT 	  6-6
    
         6.11  EXHIBIT 3 - INNOVATIVE TREATMENT TECHNOLOGIES: SEMI-
               ANNUAL STATUS REPORT	  6-7
    
         6.12  EXHIBIT 4 - WIDE BEACH DEVELOPMENT SITE - CASE STUDY	  6-8
    
         6.13  EXHIBIT 5 - BCD: AN EPA PATENTED PROCESS FOR DETOXIFYING
               CHLORINATED WASTES	  6-10
    
         6.14  EXHIBIT 6 - INNOVATIVE TECHNOLOGY: GLYCOLATE
               DEHALOGENATION  	  6-12
    
         6.15  EXHIBIT 7 - ENGINEERING BULLETIN: CHEMICAL
               DEHALOGENATION TREATMENT:  APEG TREATMENT	  6-14
    
         6.16  KEY REFERENCE LIST - DECHLORINATION 	  6-20
    

    -------
                                     6.0  DECHLORINATION
     6.1
    TECHNOLOGY DESCRIPTION
           The Alkaline Metal Hydroxide/Polyethylene Glycol (APEG) dehalogenation technology
     uses a glycolate reagent generated from an alkaline metal hydroxide and a glycol to remove
     halogens (e.g., chlorine, bromine, fluorine, etc.) from halogenated aromatic organic compounds in
     a batch reactor.  KPEG (potassium hydroxide/polyethylene glycol) is the most commonly used
     type of APEG reagent. Potassium hydroxide, or sodium hydroxide/tetra-ethylene glycol
     (ATEG), is another variation of the reagent. APEG processes involve heating and physical
     mixing of contaminated soils, sludges, or liquids with the chemical reagents. During the reaction
     water vapor and volatile organics are removed and condensed. Carbon filters are used to trap
    volatile organic compounds that are not condensed in the vapor.  The treated residue is rinsed to
    remove reactor by products and reagent and then dewatered before disposal. The process results
    in treated soil and wash water.
      Solids and liquids
      containing
      aromatic halogenated
      compounds
      Reagents
      Heat(25°Ctol50°)
                     Dechlorination
                                      • Batch process
    Residual media with
    treatment byproducts
    Treated air emissions/spent
    carbon
    Extracted water for
    treatment
    Wash water to be recycled
                                            6-1
    

    -------
    6.2           TECHNOLOGY STATUS
                  •      Dechlorination was selected by EPA for cleanup at five Superfund
                         remedial sites: Wide Beach, New York; Resolve, Massachusetts; Sol Lynn,
                         Texas; Myers Property, New Jersey; and Tenth Street Dump, Oklahoma.
                         None of these cleanups has been completed. It was also selected for three
                         emergency response actions.
    
                  •      The Wide Beach cleanup is ongoing. The  process is a combination of
                         APEG and the AOSTRA - Taciuk process.  A project case study is
                         included as Exhibit 4.
    
                  •      The technology has been approved by EPA's Office of Toxic Substances to
                         treat PCBs under the Toxic Substances Control Act.
    
    
    6.3           APPLICATIONS
    
    
                  •      Dechlorination reduces the toxicity of halogenated organic compounds -
                         particularly dioxin and furans, PCBs, and certain chlorinated pesticides.
    
                  •      It is appropriate  for soils, sludges, sediments, and liquids.
    
    
    6.4           TECHNOLOGY STRENGTHS
    
    
                  •      It has greater public acceptance than incineration.
    
                  •      Dehalogenation has been used successfully to treat contaminant
                         concentrations of PCBs reported as high as 45,000 ppm to less  than 2 ppm.
    
                  •      Uses standard reactor equipment to mix/heat soil and reagents.
    
                  •      Energy requirements are moderate, and operation and maintenance costs
                         are relatively low.
    
    
    6.5           TECHNOLOGY LIMITATIONS
    
    
                  •      Most effective with aromatic halides when APEG and  KPEG reagents are
                         used, although ATEG reportedly works with aliphatic halides.  The
                         presence of other pollutants, such as metals and other inorganics, can
                         interfere with the process.
    
                  •      Wastewater will  be generated from the residual washing process.
                         Treatment may include chemical oxidation, biodegradation, carbon
                         adsorption, or precipitation.
    
                  •      Engineering controls, such as a  lined and  bermed treatment area and
                         carbon filters  on gas effluent stacks, may  be necessary to guard against
                         releases to the environment.
                                               6-2
    

    -------
    6.6           POTENTIAL MATERIALS HANDLING REQUIREMENTS
    
    
                  •      Excavation is required.
    
                  •      The waste material must be screened to remove debris and large particles
    
                  •      Size reduction techniques can be used to achieve a feed size required by
                         the equipment.
    
                  •      The pH of the waste may require adjustment. The KPEG process operates
                         under highly alkaline conditions. The pH of acidic material must be
                         adjusted to provide an alkaline environment.
    
                  •      The waste may require dewatering.  Very wet (less than 20 percent water)
                         material requires excessive quantities of reagent.
    
                  •      The temperature of the wastes may be adjusted.
    
                               The KPEG process operates at 212°F - 350'F. Waste material must
                               be heated.
    
                  •      The waste material and reagent may be  mixed to ensure adequate transfer
                         of the contaminants.
    
    
    6.7           WASTE CHARACTERISTICS AFFECTING PERFORMANCE
    
    
                  •      Treatability studies are necessary to  help determine the residence time in
                         the reactor. The treatment process is affected by the type of contaminant;
                         initial and desired final concentrations;  pH; water content; humic and clay
                         content of soils.
    
                  •      The ability to recover and recycle reagents is key to determining process
                         cost effectiveness.
    
                  •      Although individual batch units may have limited capacity, several may be
                         operated in parallel for a large-scale remediation.
    
    
    6.8           BASE-CATALYZED DECOMPOSITION (BCD)
    
    
           BCD is another technology for removing chlorine molecules from contaminants such as
    
    PCBs, dioxins, and pentachlorophenols. The EPA and the U.S. Navy are conducting extensive
    research on this new technology.  Like the KPEG process,  BCD requires the addition of a reagent
    
    to the contaminated soils and heating of the material for the reaction. But because the reagent is
    
    not a glycol reagent, it is significantly less expensive than the  KPEG reagent.
    
    
           Laboratory research indicates that the BCD process  is appropriate for PCBs,
    
    pentachlorophenol, dioxins, and chlorinated pesticides with a very high destruction/removal rate.
    
    
                                               6-3
    

    -------
    It also appears to work well on all types of soils. Because this technology has not been widely
    applied, it is difficult to predict what difficulties will arise at future sites. To be effective, it
    requires the soil to be screened or ground. In 1991, the U.S. Navy will be applying BCD at a site
    in Guam. This technology is discussed in greater detail in Exhibit 5.
                                                 6-4
    

    -------
    6.9
    EXHIBIT 1 - WASTE CHARACTERISTIC TABLE
    Waste Type:  Soils and Sludges
    Technology:  Glycolate Decblorination
        Characteristics
      Impacting Process
          Feasibility
                      Reason for Potential Impact
            Data
         Collection
        Requirements
    Elevated
    concentrations of
    chlorinated organics
    
    Presence of:
    
    • Aliphatic organics
    • Inorganics
    • Metals
    
    High moisture content
    Low pH (<2)
    Presence of other
    alkaline reactive
    High humic content in
    soil
                Concentrations greater than 5% require
                excessive volumes of reagent.  (Low ppm
                is optimum.)
    
                Reagent effective only with aromatic
                halides (PCBs, dioxins, chlorophenols,
                chlorobenzenes).
                Water may require excessive volumes of
                reagent
    
                Process operates under highly alkaline
                conditions.
    
                Aluminum and possibly other metals that
                react under highly alkaline conditions
                may increase amount of reagent required
                by competing for the KPEG. The
                reaction may also produce hydrogen gas.
    
                Increases reaction time. Clay and sandy
                soils as well as high organic content soils
                can be treated with increased reaction
                time.
    Analysis for priority
    pollutants
    Analysis for priority
    pollutants
    Soil moisture content
    
    
    pH testing
    
    
    Metals analysis
    Organic content in
    soil
    Source:  Technology Screening Guide for Treatment of Soils and Sludges EPA/540/2-88/004
            (1988)
                                       6-5
    

    -------
    6.10
    EXHIBIT 2 - DATA FROM SEMI ANNUAL STATUS REPORT
      Selection Frequency*
    
                 3
                                     Dechlorination
       NUMBER
       Of TIMES
      SELECTED
                                                  89
                                               90
                             87     88
                            FISCAL YEAR
    * Data derived from 1982 - 1990 Records of Decision ( RODs ) and anticipated design and
     construction activities.
                                                       September 1991
            Contaminants Treated By Dechlorination
     Number
        of
     Superfund
       Sites
                    PCBs
                   Herbicides     SVOCs
                                                  Dloxln
       * Data derived from 1982 - 1990 Records of Decision (RODs) and anticipated design and construction
         activities. At some sites, the treatment is for more than one major contaminant
                                       6-6
    

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     6.12
    EXHIBIT 4 - WIDE BEACH DEVELOPMENT SITE - CASE STUDY
    Wide Beach  Development Site - Case Study
    Jack D. Goneraux
    US Army Corps of Engineers, Kansas City District
    I. Site History and Description
         A. Location and Setting
         The Wide  Beach Development Site  is
    located in Brant, NY approximately 30 miles
    south of Buffalo. The area is located on Lake
    Erie and is approximately 54 acres in size. It is
    principally comprised of summer homes, about
    120 people in the summer, and some full time
    residences, about 45 people. The site is quite
    flat  with  a  slight  slope to the southwest
    (toward Lake Erie). The soils are till and glacial
    lake deposits composed of dark  gray  and
    brown silty day.
    
         B. Historical Use and Problem Discussion
         There was about a mile of soil/gravel
    roadways  in the  area. From 1968  to 1978,
    the Wide  Beach  Home  Owners  Association
    applied about 40,000 gallons of wdste off to
    roads for dust control. Some of that oil was
    contaminated with polychlorinated biphenyis
    {PCBs.)  This problem was compounded  in
    1980 when, during the  installation  of  a
    sanitary sewer line, the surplus excavated soil
    was used as fill in  several yards  and in  a
    nearby 'common* area known as the Grove.
    During remedial investigations, concentration
    of PCBs up to 1026 mg/Kg were observed in
    the soils (one sample in a catch basin had
    5300 mg/Kg.)  As an interim  measure,  the
    roads in the area were paved with asphalt.
    
         C. Studies and Record of Decision
         Prior  to the  Record of  Decision, Erie
    County,   NUS   Corporation,   and   EA
    Engineering,   Science,  and   Technology
    conducted studies of the area during various
    periods  between approximately  1982  to
    1985. The EPA Region 2 administrator signed
    a Record of Decision on September 30, 1985.
    The selected remedy as conceived then was
    excavation of PCB-eontaminated soil* in the
    road ways, drainage ditches, driveways, yards,
    and   wetlands   with   disposal  of   the
    contaminated asphaltic material, and reusing
    uncontaminated asphaltic material in repaying.
    Chemical troatment of the PCB-contaminated
    and other general site activities. The specific
    treatment  process  was  selected to  be
    potassium  polyethylene  glycol  (KPEG)
    treatment of the soil slurried with reagent in a
    continuous  chemical  treatment   reactor,
    followed by a rotary kiln to raise the coil slurry
    temperature to approximately 100-degrees C.
    The slurry would then have been separated by
    sedimentation with some recovery of reagent*
    followed by washing and placement a* fin. A*
    originally  proposed  approximately  37,600
    yd~3 of  noil  and  sediment  would  be
    excavated. Estimated capital costs in the ROD
    were about J9M.
    
    D. Testability Studies
         During the late spring of 1988, Ebasco,
                               working with Galson Research, performed trial
                               runs using the KPEG process at the site. Soil
                               was processed in batch reactors of about 200
                               Ibs per batch. A full-scale batch processor
                               was conceived to process about  56,000 Ibs
                               per batch. For each  200 Ibs of soil,  120
                               pounds  of  reagent   was   composed  of
                               1:1:1:1:2 proportions of potassium hydroxide
                               (KOH).   water,  polyethylene glycol(PEG),
                               triethylene  gJycol-methyl   ether-   higher
                               homologs   (TMH),   and  dimethyl-
                               sulfoxide(DMSO). Optimum reactions occurred
                               with a residence time  of between 4.5 and 7
                               hours at ISO degrees centigrade. Initially, the
                               reagents   were   to   be   recovered   by
                               filtration(early  laboratory characterization had
                               suggested low clay content), but during the
                               site  trial  studies,  the materials  that  were
                               processed had  a  high  clay content  and
                               required centrifuging. A total of 10 runs were
                               conducted at the site. Based on the pilot work
                               reagent costs  were estimated to be about
                               $65/ yd'3. Ebasco estimated that the  total
                               processing costs would be about $2917 ycT3
                               for reaching a 2 ppm cleanup level. At that
                             .  rate the 37.OOO yd's of soil would have cost
                               about  $10M,  hot  including  such items as
                               excavation and handling.
    
                                   E. Construction Award
                               Designs and specifications were prepared by
                               Ebasco Corporation  and  the Kansas  City
                               District of the  Corps of Engineers advertised
                               the contract as a request for proposal (RFP)
                               on May 9, 1989. Estimates of the volume of
                               contaminated  material  after design   data
                               collection was 19,000 yd~3. The estimated
                               amount to be treated was 21,000 tons.  As a
                               "175 start*, the contract was awarded on
                               October 16, 1989 to Kimmins Corporation for
                               $15.5M (based  on the 19,000  yd~3,  this
                               represents as total  cost of about $815/yd*3.'
    
                               II. Process Description
                                   A. Original Concept
                                  The method ns developed during the pilot
                               studies performed during design was a batch
                               process. Hne  soil  was to be blended  with
                               KPEG and hot  potassium hydroxide. Kimmins
                               had proposed  to allow this mixture to blond
                               for a minimum of 12 hour*. The mixture was
                               then to be transferred by sludge pump* to a
                               centrifuge for dewatering and then washing.
                               The reagent* were to be recovered through
                               evaporation and distillation and then reused,
                               if possible.
    
                                  B. Value Engineering (VE1 Proposal
                                  In  February of  1990,  the  Corp* of
                               Engineer*  received  a  Value  Engineering
                               proposal from Kimmins.  The proposal  was
                               evaluated and given  conditional  approval
                               pending a successful  site demonstration of
                               the process. After review by the Corps, EPA,
    and Ebasco, the Corps tentatively approved
    the VE proposal. As a part of any VE proposal
    after  award the  Contractor is  required to
    submit at least equivalent information to that
    in the initial proposal. Because a field tests of
    the Galson batch process was performed as
    required by the  ROD, before the  Corps could
    fully  accept  the  VE  propose!,  a  field
    demonstration  of  the   proposed  system
    demonstrating dechlorination was required.
    Kimmins elected to mobilized their full-scale
    equipment for this demonstration at no cost
    to the government.
    
        The VE proposal suggested  replacement
    of the batch process  with a  continuous
    operation  and .replacement  of  the  KPEG
    process with an alkaline polyethylene  glycol
    (APEG) process developed and patented  by
    EPA and integrated into  a thermal treatment
    system called the AOSTRA-Taciuk processor.
    The   VE   proposal   suggested  that  the
    combination of  vigorous mixing and higher
    temperature  would   accelerate  the  APEG
    dechlorination. The following is a discussion
    of the  process as  described  in  the VE
    proposal:
    
             1. Chemistry
        Whereas the  KPEG  process  used  a
    combination of potassium hydroxide, ethylene
    glycol, and DMSO at temperatures of about
    100 to 150 degrees centigrade, the EPA
    process increase the ratio  of  water  and
    decreased  the  relative  concentration* .of
    ethylene glycol  and alkaline additive*.  Under
    the VE proposal, « modification of the EPA
    method, the  soil  temperatures  in the first
    reaction chamber (preheat) were  projected to
    be about 200 degrees C (450F) followed by a
    retort  section   that   was   to  achieve
    temperatures  of  about  580   degrees  C
    (11 OOF.)   The   purpose  of   the  higher
    temperature section  was to separate the oily
    materials and  any residual PCBs from the
    dechlorination step. The consequence* are
    that the PCS levels in the circulating oil rises
    to an equilibrium level.
    
            2. Extraction
        The general layout  of the processor is .
    Figure 1. It i* composed of a multi-chambered
    rotary kiln. These sections or* the preheat.
    retort, combustion, and cooling.  The preheat
    section temperature  vaporize* water and the
    volatile organic*.  The retort section 1* hot,
    enough to vaporize heavy oQs and .PCBs. This
    section . also  results   in. cracking,  of
    hydrocarbons  resulting  in  coke  formation
    which exits with the  soB. The retort section i*
    sealed to less than about 3 per cent oxygen.
    Hydrocarbon vapor* are drawn off of this
    section. The outer shell of the kiln allows the
    soil to travel back toward the feed end where
                                                                            6-8
    

    -------
                           Modified Taciuk Processor
                                          Wide Beach
                                          Auxiliary Bwnw
       Own SON
     Figure  l
    
    
     some is recycled to the retort section. In the
     combustion chamber, the coked soiljs burnt
     and heat is reclaimed. The treated soil cools in
     the last section  of the  kiln. Collection and
     treatment of the off-gasses is also performed
     for air emissions control.  Vapor driven off in
     the retort section passes through hot cyclones
     to  remove  paniculate,  cooled  in  a packed
     column (to maintain effective PCB removal
     with the oil, the system requires additional oil
     to be added to maintain a charge of oil in the
     column, this diesel oil is  recycled and blended
     with the feed stream.) Following the packed
     column, the vapors are fed into water-cooled
     condensers. Excess liquids collected from the
     process is collected in an off-line storage tank
     and periodically removed for disposal.
    
     Hi. Development Status
         A. Mobilization
         To demonstrate the  applicability of the
     proposed  VE alternative,  Kimmins mobilized
     the treatment unit in September of 1990. This
     approach  allowed the contractor to perform
     the ROD required trial tests.
    
         B.Trial Test
         The purpose of  the field  test was to
     demonstrate that dechlorination of the PCBs
     was occurring  as shown by a disappearance
     of PCBs in the treated soil and documentation
     that the PCB inventory of the system show a
     decline when the PCB feed is suspended. This
     objective was not mot because of the larger
     volume of recycle oil allowing only 20 percent
    .of the recovered oils to be recycled before the
     test end,  and  further  complicated  because
     during  the  contaminated feed phase,  less
     PCBs accumulated in the recycled oil than
     expected.   Another  objective  was  to
     demonstrate no transfer of the PCBs to the
     aqueous condensate. A maximum of 2 ppm of
     PCB were allow to be present in the treated
     soils. A total of 61.66 tons of contaminated
     matenal were processed during the trial runs
     over a period of 7.62 hour ( 8.1 tons/hour.)
     Air emissions initially failed because of tears
              in the bag-house, a later rerun of
              the  process  demonstrated  the
              ability to meet with  paniculate
              criteria. A total of 4.96 pounds of
              PCBs  were fed to  the  system,
              25.2  percent  of  the  material
              remained in the process oils and .3
              percent  remained  in the soil.
              Assuming   this   amount  was
              distributed in the 61.66 tons of
              material,  the  average  influent
              concentration  would be 40 ppm.
              The contractor estimated that 76
              percent   of   the   PCBs  were
              destroyed in the first pass through
              the unit.
    
                   C. Total Processed
                   Following  the trial burn  and
              evaluation of the test results, the
              contractor began excavation  and
    processing of the site materials. To optimize
    the use of the treatment  and cut lines, the
    Corps  construction office  is  extensively
    sampling  the  area prior to   excavation.
    Through  this process, closer  cut lines have
    been  defined.  In  addition,  certain  areas
    originally thought  to be   contaminated  but
    unsampled,   were  found  to   be   clean.
    Aoproximately 80 percent  of the material has
    been excavated and treated. The throughput
    rate has been closer to 108 tons/day for the
    unit rather than the estimated  240 tons/day
    project in the VE proposal.
    
        D. Excavation activities
    These slides  show  some  of the excavation
    and activities taking place in  the residential
    area. As  can be seen,  the homeowners are
    enduring   inconveniences.   The    Corps
    construction representatives are working day
    to day with  the  homeowners  to minimize
    these  inconveniences. As an example, one
    elderly lady,  whose driveway  and yard are
    being remediated, calls the construction office
    when she needs  help getting  her groceries
    into the house. The construction office is glad
    to help m this situation because of the need to
    promote good will.
    
    XII. Other Consideration*
        One  of  the principal  problems that  has
    occurred at the site is the characteristic of the
    treated material. Originally the treated material
    was to have been used as backfill replaced on
    site after treatment. A problem has developed
    that  precludes this usage.  Although  the
    physical placement  of  the material  can  be
    achieved  according to the  specification. The
    treated material becomes 'quick* when water
    is  applied. One can  walk across the material
    but slight vibrations result in loss of bearing
    strength.   The  reasons   for   the  "quick"
    conditions are still being investigated.  None-
    the-less, an  alternate method of disposal is
    now required.
    
        Additional materials characterization of
    the site could have benefitted the project, by
    allowing a  more precise delineation of the
    contaminated areas. Particular attention to the
    more traditional materials handling propenies
    could also answer some of the questions on
    the   "quick"  characteristics.   These  soil
    behavior  characteristics should   also  be
    evaluated as a pan  of any demonstration
    runs.
    
         Changes in monitoring requirements as a
    result of VE proposals after award should also
    be  a pan  of  the assessment  of process.
    Modification of  parameters and   sampling
    frequency may be appropriate, particularly if
    the VE proposal involves significantly different
    equipment or processes. For  example,  test
    evaluations   could  include   monitoring  of
    baghouse  ash  concentrations  during  the
    testing,    monitoring   for   petroleum
    hydrocarbons  in  the   treated  soil,  and
    monitoring  changes  in  the  physical  soil
    properties as it passes through the process.
    Another area  that   is  important  to  the
    evaluation  of the trial  is to  have  detailed
    process flow diagrams updated as constructed
    at the site prior to the test.
    
         In a very intensive process engineering
    system  such as  at this site should require
    frequent visits by chemical/process engineers
    as a pan of the construction oversight team.
    The process  engineer,   by  living   with the
    system for more than just a few days, may be
    able to identify problems that would otherwise
    go undetected. Further, the design  chemists
    and  process engineers  need  to have near
    "real-time" access to the data that is being
    generated  from  the treatment.  A  better
    evaluation and suppon  for the construction
    activity  could be achieved by better feedback
    to the  designers, such  as information  on
    reagent usage, process operating conditions,
    and chemical analyses.
    
         As to the applicability and effectiveness
    of  the  process  used   at  Wide  Beach,
    conclusions cannot be totally drawn until all
    the  costs have been  accounted and a total
    review of the data performed. The  treatment
    system appears to be reducing the PCB levels
    to  non-  detectable  levels  in  the  soil
    (approximately 4 ppb.)
    
    Bibliography
    1.) EPA, Record of Decision, September 30,
    1985
    2.) Ebasco Services Inc. Final Design Report,
    February, 1989
    3.)  Kimmins Thermal Corporation,  various
    project submittals
                                                                    6-9
    

    -------
    6.13        EXHIBIT 5 - BCD: AN EPA PATENTED PROCESS FOR DETOXIFYING
               CHLORINATED WASTES
    
                               United States                 Office of Research and
                               Environmental Protection         Development
                               Agency                     Cincinnati OH 45268
                               BCD:   An  EPA-Patented
                               Process  for  Detoxifying
                               Chlorinated  Wastes
                Problem of Chlorinated Wastes
    
                •   Many chlorinated organic products of commerce are toxic, and because of past industrial
                   practices, these compounds are found at toxic levels in the environment. While pollution
                   prevention measures will greatly diminish chances of future contamination, cost-effective
                   and efficient treatment technologies are badly needed to remove risk to health and eco-
                   systems from the exposure of these compounds. Incineration is an option, but is very
                   expensive for most applications, and does not enjoy public support.
    
                •   An estimated 1 billion tons of soil in the U.S. are contaminated with chlorinated organic
                   compounds. Of these toxic compounds, the most frequently found are polychlorinated
                   biphenyls (PCBs),  used as a dielectric in transformers, and polychlorinated phenols
                   (PCPs), used as a wood preserving substance.
    
                •   Sediments in lakes, harbors and rivers all across the country are also contaminated with
                   chlorinated organic wastes.
    
                   Many obsolete pesticide formulations, such as the materials stored in Byers Warehouse
                   in St. Joseph, MO, contain toxic chlorinated organics, and must be disposed of in an
                   environmentally acceptable manner.
    
    
                The BCD Process, an  EPA invention
    
                •   Charles Rogers and coworkers at the Risk Reduction Engineering Laboratory have been
                   working on detoxifying chlorinated organics for over ten years. They focused their
                   efforts on contaminated soils, and developed several chemical treatment processes that
                   are described as base-catalyzed dechlorination (BCD) processes. Unlike the earlier
                   versions that use polyethylene glycol (PEG), the latest version of this technology uses
                   no PEG, and represents new chemistry for dechlorination. This new mechanism is a
                   breakthrough in treatment technology, and provides clean and inexpensive reaction.
    
                •   Unlike incineration, BCD processes offer lower cost of decontamination, reduced air
                   pollution risk, and greater public acceptance.
    
                •   The process embodies the following steps: mixing the chemicals with the contaminated
                   matrix (such as excavated soil or sediment, or liquids, containing these toxic com-
                   pounds), heating the mixture at 340°C for several hours.  The off-gases are treated
                   before releasing to the atmosphere. The treated remains of the reactor are non-hazard-
                   ous, can be either  disposed of according to standard methods, or further processed for
                   separating components for reuse.
    
                                               6-10
    

    -------
                FLOW CHART:
                                         Chemicals
    i-s
    &
    
    Gases
    »-
    
    
    
    Treatment
    
                          Contaminated Soil
                                                Clean Soil
                                       Returned to Site
    Large-Scale Application of BCD Process
    
    •  In Stockton, CA, the BCD process will be used to decontaminate PCB-contaminated soil
       in a Navy site in June, 1991.  This event will be conducted under EPA's Superfund
       Innovative Technology Evaluation (SITE) program.  Upon successful completion of this
       demonstration,  a follow-up decontamination will be done in Guam by the Navy.
    
    •  In cooperation with Region 7, RREL is attempting to apply BCD technology to dechlori-
       nating liquid and solid  formulations of several banned herbicides (containing dioxin) at
       St. Joseph, MO. Recent laboratory tests have yielded promising results.  Optimization of
       reaction conditions and engineering research are ongoing for scaling up the process
       from laboratory to large-scale operation.
    
    •  For treatment of contaminated soils, the BCD technology is being made ready for licens-
       ing for commercial use. Several companies have shown strong interest in licensing the
       technology.
    
    
    Status of BCD Technology
    
    •  New applications are being sought in treating mixed wastes (organics mixed with radio-
       active materials), in collaboration with the Department of Energy.
    
    •  Engineering research is being conducted for process optimization and scale-up.
    
    •  The technology is available through licensing for commercial use.
                                   6-11
    

    -------
     6.14
    EXHIBIT 6 - INNOVATIVE TECHNOLOGY:  GLYCOLATE
    DEHALOGENATION
                  United States                  Solid Waste And
                  Environmental Protection        Emergency Response
                  Agency                      (OS-220)
                                                                                          Directive 3200 5-254FS
                                                                                          November 1989
    xc/EPA              Innovative Technology
                                 Glycolate  Dehalogenation
     TECHNOLOGY DESCRIPTION
    
         The glycolate dehalogenation process
     is potentially effective in detoxifying spe-
     cific types of aromatic organic contami-
     nants, particularly dioxins and polychlori-
     nated biphenyls (PCBs). The process in-
                          taminant type, initial concentration of the
                          contaminant, water content, humic and clay
                          content (for soils), and the level of treatment
                          desired.  Water is vaporized in the reactor
                          and collected in a condensate receiver.  A
                          carbon adsorption  filter traps any volatile
                          compounds that are not condensed.
             Figure 1: Schematic Diagram of a Typical Glycol Dehalogenation
                                 Treatment Facility
    volves heating and physically mixing con-
    taminated soils, sludges, or liquids with an
    alkali metal hydroxide-based polyethylene
    glycol reagent in a mobile batch reactor. A
    typical glycolate dehalogenanon treatment
    facility is shown above in Figure 1.
        Before treatment, soils are sieved to re-
    move any large rocks and/or debris.  The
    contaminated media are commingled with a
    reagent to form a homogeneous slurry.  The
    reagent primarily consists of potassium or
    sodium hydroxide (KOH or NaOH)  and
    polyethylene glycol (PEG); other reagents
    such as dimethyl sulfoxide (DMSO) or sul-
    folane (SFL.N) may be added to improve the
    efficiency of the process. The slurry is si-
    multaneously heated (2S°C to 150°C) and
    mixed, consequently decomposing haloge-
    nated contaminants into less toxic, water-
    soluble compounds (glycol-ethers and chlo-
    ride salts).
        Treatment time  in the reactor  ranges
    from 0.5  to 5 hours, depending on the con-
                              Additional treatment of soils is required
                          to desorb reaction by-products and reagent
                          from the dechlorinated soil. This treatment
                          includes physically mixing the dehaloge-
                          nated soil with water in successive washing
                          cycles.  The treated soil is then dewatered
                          and redeposited on-site, while the reagent
                          and wash waters are recycled and ultimately
                          treated and/or delisted.
                              Advantages of glycolate dehalogena-
                          tion include toxicity reduction of target con-
                          taminants, mobility of treatment unit, short
                          treatment time, non-toxic by-products, and
                          cost-effectiveness relative to conventional
                          technologies for similar wastes (e.g., incin-
                          eration).
                              Disadvantages are that the technology
                          is limited to halogenaied compounds, and
                          spent reagent, wastewater, and by-products
                          may require further treatment and/or dis-
                          posal actions.  Applications and limitations
                          of glycolate dehalogenation are further dis-
                          cussed in the following sections.
    SITE  CHARACTERISTICS  AFFECTING
    TREATMENT FEASIBILITY
    
        Glycolate dehalogenanon may be used
    to treat multimedia waste containing aro-
    matic  halides such as dioxins, PCBs. and
    chlorobenzenes. The effecuveness of this
    treatment on general contaminant groups is
    provided in Table 1; however, treatabihty
    tests are required to determine the effecuve-
    ness of glycolate dehalogenation for spe-
    cific site conditions.
        Factors limiting the effecuveness of gly-
    colate dehalogenation include highly con-
    centra ted contaminants, high water content,
    low pH, high humic content (soil), and  the
    presence of other alkaline-reactive materi-
    als (e.g., aluminum, other metals). Site-spe-
    cific characteristics and their potential  im-
    pact are provided in Table 2.
    
                  Table 1
     Effectiveness of Glycol Dehalogenatlon
      Treatment on General Contaminant
          Groups for Soil and Debris
     i
         TrMtability Group*
                                                                                                       Effectiveness
         Non-nak>g«n«i*a vouuta*
         PCBs
         Organic corrosives
         Volatile metals
         Non-«oiame mews
         Inorganic corrosives
         Inorganic cysmoes
         Reducer*
                                o
                                o
    0
    o
    o
    o
                                o
    o
    o
                                o
                                o
                                                         6-12
    

    -------
         Table 2: Site-Specific Characteristic* and Impacts on
                 Glycolate Dehalogenation Treatment
    Characteristic*
    Impacting Procaae
    F«a«lblUty
    Elavaiad conannnont at
    cNonnaMd organic*
    (graaiar inan S paicant)
    Pratanea ol aliphatic
    orgaraca. norganca, ana
    mala*
    Hign ««!•' contart in
    waatalgraawftnan IS
    paican)
    Low pH (Me than 2)
    Praaanea of olhar
    tlkatrw-raaawa malaria*)
    (a.fl.. aluminum, an*
    mau»)
    High hutnc conwn n sal
    Raeaonsfor
    Potential
    Impact
    Raqwraa axcaaaiva »oHimaa
    
    -------
    6.15
    EXHIBIT 7 - ENGINEERING BULLETIN: CHEMICAL DEHALOGENATION
    TREATMENT:  APEG TREATMENT
                  United State*                Office of Emergency and     Office o*
                  Environmental Protection       Remedial Rettpons*         Research and Development
                  Agency                     Washington, DC 20460       Cincinnati, OH 46268
           EPA
                                 Superfund
                                             EPA/54Q/2-90V015
    September 1990
                  Engineering Bulletin
                  Chemical  Dehalogenation
                  Treatment:  APEG  Treatment
      Purpose
    
          Section 121(b) of the Comprehensive Environmental
      Response, Compensation, and Liability Act (CERCLA) mandates
      the Environmental Protection Agency (EPA) to select remedies
      that "utilize permanent solutions and alternative treatment
      technologies or resource recovery  technologies to the
      maximum extent practicable" and to prefer remedial actions
      in which treatment "permanently and significantly reduces
      the volume, toxicity, or mobility of hazardous substances,
      pollutants and contaminants as a principal element."  The
      Engineering Bulletins are a series of documents that summarize
      the latest information available on selected treatment and site
      remediation technologies  and related  issues.  They provide
      summaries of and references for the latest Information to help
      remedial project managers, on-scene coordinators, contractors,
      and other site cleanup managers understand the type of data
      and site characteristics needed to evaluate a technology for
      potential applicability to their Superfund or other hazardous
      waste site. Those documents that describe individual treatment
      technologies focus on remedial investigation scoping needs.
      Addenda will be issued periodically to update the original
      bulletins.
      Abstract
    
          The chemical dehalogenation system discussed in this
      report is alkaline metal hydroxide/polyethylene glycol (APEG)
      which is applicable to aromatic halogenated compounds.
      The metal hydroxide that has been most widely used for this
      reagent preparation is potassium hydroxide (KOH) in
      conjunction with polyethylene glycol (PEG)[6, p. 461 ]*
      (typically, average molecular weight of 400 Daltons) to form
      a polymeric alkoxJde referred to as KP€G [16, p. 835]. However,
      sodium hydroxide has also been used in the past and most
      likely will find Increasing use in the future because of patent
      applications that have been filed for modification to this
      technology. This new approach wilt expand the technology's
      applicability and efficacy and should reduce chemical costs by
      facilitating the use of less costly sodium hydroxide  [18]. A
      variation of this reagent is the use of potassium hydroxide or
      sodium hydroxide/tetraethylene glycol, referred to as ATEG,
      that is more effective on halogenated aliphatic compounds
      [21]. In some KPEG reagent formulations, dimethyl sulfoxide
    
      • [reference number, page number]
                                              (OMSO) is added to enhance reaction rate kinetics, presumably
                                              by improving  rates  of  extraction of the haloaromatic
                                              contaminants [19][22].
    
                                                  Previously developed dehalogenation reagents involved
                                              dispersion of metallic sodium in oil or the use  of highly
                                              reactive organosodium compounds. The reactivity of metallic
                                              sodium and these other reagents with water  presented a
                                              serious limitation to treating many waste matrices; therefore,
                                              these other reagents are not discussed in this bulletin and are
                                              not considered APEG processes [1, p. 1].
    
                                                  The reagent (APEG) dehalogenates the pollutant to form
                                              a glycol ether and/or a hydroxylated compound and an alkali
                                              metal salt, which are water soluble byproducts. This treatment
                                              process chemically converts toxic materials to  non-toxic
                                              materials. It is applicable to contaminants in soil (11, p. 1 ],
                                              sludges, sediments, and oils [2, p. 183].  It is mainly used to
                                              treat halogenated contaminants including polychlorinated
                                              biphenyts (PCBs) [4, p. 137], polychlorinated dibenzo-p-dioxins
                                              (PCOOs) [11, p. 1], polychlorinated dibenzofurans (PCDFs),
                                              polychlorinated  terphenyts (PCTPs), and some halogenated
                                              pesticides [8, p. 3][14,  p. 2].  This technology  has  been
                                              selected as a component of the remedy for three Superfund
                                              sites. Vendors should be contacted to determine the availability
                                              of a treatment system for use at a particular site. The estimated
                                              costs of treating soils range from S200-SSOO/ton.  This bulletin
                                              provides information on the technology applicability, the types
                                              of residuals resulting from the use of the technology, the
                                              latest performance data,  site requirements, the status of the
                                              technology, and where to go for further information.
                                              Technology Applicability
    
                                                  This technology is primarily for treating and destroying
                                              halogenated aromatic contaminants. The matrix can be soils,
                                              sludges, sediments, or oils. If a waste site has contaminants
                                              other than halogenated compounds, other alternatives should
                                              be considered.
    
                                                  The concentrations of PCBs that have been treated are
                                              reported to be as high as 45,000 ppm. Concentrations were
                                                      6-14
    

    -------
    reduced to leu than 2 parts per million per Individual PCS
    congener.  Pol/chlorinated dibenzo-p-dioxins (PCOOs) and
    polychlorinated dibenzofurans (PCOFs) have been treated to
    nondetectable leveb at part per trillion sensitivity. The process
    has successfully destroyed PCOOs and PCOFs  contained in
    contaminated pentachkxophenot oil  For a contaminated
    activated carbon matrix, direct treatment  was  less effective
    and  the reduction of PCDDs/PCDFs to concentrations less
    than 1 ppb was better achieved by first extracting the carbon
    matrix with a solvent and then treating the extract [15, p. 1].
    
        AJI field applications of this technology to date have been
    in various matrices and not on specific Resource Conservation
    and  Recovery Act (RCRA) listed wastes. The effectiveness of
    APEC on general contaminant groups for various matrices is
    shown in Table 1. Examples of constituents within contaminant
    groups are provided in Reference 23, Technology Screening
    Guide for Treatment of CERCLA Soils and Sludges*. This table
    is based on the current available information or professional
    judgment when no information was available.  The proven
    effectiveness of the technology for a particular site or waste
    does not ensure that it will be effective at all sites or that the
    treatment efficiency achieved will be acceptable at other sites.
    For the ratings used for this table, demonstrated effectiveness
    means that, at some scale, treatabifity was tested to show
    that, for that particular contaminant and matrix, the technology
    was effective. The ratings of potential effectiveness and no
                           Table 1
              Effectiveness of APEG Treatment on
       General Contaminant Group* tor Various Matrices
    
    Contaminant Croups
    
    
    
    i
    §>
    c5
    
    
    
    
    
    
    i
    
    
    I
    !
    Halogenated volatfles
    Halogenated semivolatiles
    ... 1 , . i .n_.
    
    Nonhalogenatcd stmivoUulei
    PCBs
    Pesttddes (halogenated)
    Dtoxira/Furan*
    Organic cyanides
    Organic corrosivw*
    Volatfe metals
    Nonvolatile metals
    Atbestos
    Radioactive materials
    Inorganic comufrea
    Inorganic cymMes
    Oxfdizen
    Iteduccra
    Effectiveness
    Sediments OOs Sod Sludge
    T
    V
    a
    a
    •
    V
    •
    a
    a
    a
    Q
    a
    a
    a
    o
    a
    a
    T
    T
    Q
    a
    •
    •
    •
    a
    a
    Q
    a
    a
    a
    a
    o
    a
    a
    T
    T
    a
    a
    •
    •
    •
    a
    a
    a
    a
    a
    a
    a
    a
    a
    a
    T
    T
    Q
    a
    •
    T
    •
    Q
    Q
    Q
    Q
    Q
    Q
    Q
    Q
    Q
    a
    
    torn* tc*l« comptand
    
    Q
    wa
    
    ik
    opinion ttuK tvdinoloijy WM! not
     expected effectiveness  are  based upon expert judgment
     Where potential effectiveness is indicated, the technology is
     believed capable of successfully treating the contaminant group
     in a particular matrix.' When the technology is not applicable
     or  will probably  not work for a  particular combination of
     contaminant group and matrix, a no-expected-effectivenes?
     rating is given.
    
    
     Limitations
    
         The APEC technology  is not intended as  an in  situ
     treatment.  APEC will dehalogenate aliphatic compounds if
     the mixture is reacted  longer and at significantly higher
     temperatures than for  aromatic compounds, it is
     recommended that a related reagent KTEC be considered for
     these contaminants.  KTEC  has been shown at laboratory
     scale to be effective on halogenated  aliphatic compounds
     such as ethylene  dibromide, carbon tetrachloride, ethylene
     bichloride,  chloroform,  and dichloromethane (methylene
     chloride)  (18, p. 2].   The necessary treatment time and
     temperature for KTEC use can be determined from laboratory
     tests.
    
         Treatability tests should  be conducted prior to the final
     selection of the APEC technology to identify optimum operating
     factors such as quantity of reagent, temperature, and treatment
     time. These tests  can be used to identify such things as water
     content, alkaline metals and high humus content in the soils,
     glycoi extractables content, presence of multiple phases, and
     total organic halides that have the potential to affect processing
     times and costs [19],
    
        The treated soil may contain enough residual  reagent
     and treatment byproducts that their removal could be required
     before final disposal. If necessary, such byproducts are usuall)
     removed by washing the soil two or three times with water.
     The soil will have to be neutralized by lowering the pH prior to
     final disposal.
    
        Specific safety aspects  for the  operation must  be
     considered. Treatment of certain chlorinated aliphatics in high
     concentrations with APEC may produce compounds that  are
     potentially explosive (e.g., chloroacetylenes) and/or cause a
     fire hazard. The use of DMSO or similar reagents may lead to
     formation of highly flammable volatile organics (e.g., methyl
     sulfide)[18, §IVC]. Severe corrosivity can be a concern when
     OSMO is teamed with other APEC reagents. Alkaline reactive
     materials such as  metallic aluminum will compete with the
     contaminants for the reagent and may produce hydrogen gas
     (explosive).  Vapors from heating oily soils, which are often
     the matrix in which  PCBs are  found, can also  create such
     potential problems as fires and noxious fumes. These problems
    can often be solved by taking appropriate corrective actions
    during elevated temperature processing.
    
        The operation must also be conducted with care because
    of the elevated temperatures and production of steam, the
    use of caustics in the process, and the presence of acids that
    are  used for neutralization.  If DMSO is used, care must  be
    taken to prevent  its coming into  contact with skin, for it
    enhances transport of PCBs through the skin, thus increasing
    the  risk of exposure.
                              Engineering Bulletin: Chemical Dehalogenatton Treatment: APEG Treatment
                                                          6-15
    

    -------
    Technology Description
    
        Figure 1 is a schematic of the APEG treatment process.
    
        Waste preparation Includes excavation and/or moving
    the soil to the process where it is normally screened (1) to
    remove debris and large objects and to produce particles that
    are sufficiently smaJI to allow treatment in the reactor without
    binding the mixer blades.
    
        Typically, the reagent components are mixed with the
    contaminated soil in the reactor (2). The material must be
    well  mixed with the  reagent to allow effective treatment
    Treatment proceeds inefficiently without mixing. This mixture
    is heated to between 100* and 180* C The reaction proceeds
    for 1  to 5 hours depending upon the type,  quantity, and
    concentration of the  contaminant*.   The treated material
    goes from the reactor to a separator (3) where the reagent is
    removed and can be recycled (4).
    
        During the  reaction, water is vaporized in the reactor,
    condensed (5) and collected for further treatment or recycled
    through the washing process, if required.  Carbon filters (7)
    are used to trap any volatile organics that are not condensed.
    In  the washer (6), the soil is neutralized by the additions of
    acid. It is then dewatered (8) before disposal.
    
    
    Process Residuals
    
        There are three main waste streams generated by this
    technology: the treated soil, the wash water, and possible air
    emissions.   The treated soil will need  to be analyzed  to
    determine if it meets the regulatory requirements for the site
    before final disposition can be made. The soil's pH must  be
    adjusted before disposal The chemistry of this technology is
    specific to halogenated organics and, based upon a test
    conducted by the EPA in 1985, results in byproduct compounds
    that appear to be neither toxic nor of concern. In that test the
    EPA checked  for  1)  mutagenlcity, 2) toxicity,  and 3)
    btoaccumulatbn/bloconcen-tratlon of the byproducts of two
    different contaminants:  tetrachksrobenzene and 2,3,7,8  -
    TCOO that had been treated by the process [3, p. 80].  The
    individual byproduct chemical  compounds were  not
    determined. These compounds and the residual levels of
    reagent or catalyst did not present a serious health or
    environmental problem [12, p. 2].
    
        Waste wash water contains  only  trace amounts of
    contaminants and reagents and would be expected to meet
    appropriate discharge standards, enabling it to be discharged
    to a local, publicly owned treatment works or receiving  stream.
    Volatile air emissions can be released due to the heating and
    mixing that occurs with the process. They are usually captured
    by  condensation  and/or on  activated  carbon.  The
    contaminated carbon is usually incinerated.
    Site Requirements
    
        APEC treatment units are transported by trailers [13, p.
    54]. Therefore, adequate access roads are required to get the
    unit to the site. The system that operated in Guam, which
    used a 1.5- ton batch reactor, required an area of 100 feet by
    100 feet
    
        Energy requirements  involve  heating  the reactor and
    removing the water by volatilization. For the reactor used in
    Guam,  a standard 440V, three-phase electrical service was
    required along with a diesei steam-generating plant rated at
                                                        Rgure> 1
                                                APEG Treatment Process
                                              Eimuara
                                                                                                        .Trutad
                                                                                                         Enuuiem
                                                                        WMv  Add
                                                                          LJ
    
    htpw
    (1
    
    
    
    M
    Mton
    )
    
    
    fcmntil _,'»<__•
    »«• .^ ItaKiar 1^. S^water 	 ^ WMJMT 	 9. OfttMtr —
    (2) ~~ (3) («) (•) 	 to.
    1
    Rt*9€fK Ricyck (4)
                                                                                                        $oi
                                                                                                        Ovcnucd
    Engineering Bulletin: Chemical Dehalogenation Treatment: APEG Treatment
                                                     6-16
    

    -------
    600 Ib/h and 80 psi [13, p. 53]. A standard municipal water
    supply, or equivalent. Is adequate for this process.
    
        Contaminated soils or other waste materials are hazardous
    and their handling require that a site safety plan be developed
    to  provide  for personnel protection and special handling
    measures.
    
        A means of containing and cleaning up accidental spills
    must be provided. The reagents (KOH, acids, etc.) should be
    stored in drums with containment beneath and provisions to
    pump any spills to a holding area for neutralization (19, p. 2].
    
        The process residuals normally must be stored until their
    level of contaminants are verified to be below those established
    for the site.  Depending upon the site, a method to store
    waste may be necessary. Storage capacity will depend on
    waste volume.
    
        Onsite analytical capabilities are highly  desirable.
    Extraction  equipment  and  gas  chromatography/mass
    spectometer capabilities should be available to measure
    contaminants of interest and to provide information for process
    control.
     Performance Data
    
        This technology's performance has been evaluated from
     bench-scale tests to  field tests in large reactors.  Table 2
     summarizes the results of several more important applications
     of the technology and their results.
    
        RCRA Land  Disposal Restrictions  (LDRs)  that require
     treatment of wastes to best demonstrated available technology
     (BOAT) levels prior to land disposal  may  sometimes be
     determined  to be applicable or  relevant  and appropriate
     requirements (ARARs) for CERCLA response  actions.   The
     APEC treatment technology can produce a treated waste that
     meets treatment levels set by BOAT, out may not reach these
     treatment levels in all cases.  The ability to  meet required
     treatment levels  is dependent upon  the specific waste
    constituents and  the  waste matrix.   In cases where APEC
    treatment does not meet these levels it still may, in certain
    situations, be selected for use  at the  site if a treatability
    variance establishing alternative treatment levels is obtained.
    EPA has made the treatability variance  process available in
    order to ensure that LDRs do not unnecessarily restrict the use
    of alternative and  innovative  treatment  technologies.
    Treatability variances may be  justified for handling complex
    soil and debris matrices.  The following guides  describe when
                                                         Tabl« 2
                                              APEG FWd Performance) Data
    ttc/Dat*
    Signo Trading
    NY/1982
    Montana Pole
    Butte, MT/1986
    (1 6, p. 838)
    Western
    Processing
    Kent, WA/1 986
    [1«, p. 838]
    Wide Beach
    Erie County, NY/
    1985
    Guam
    U.5A/1988
    793 gal. reactor
    [13, p. 43]
    Bengart & Memd
    Buffalo, NY/1986
    55 gal. drum
    [10, p. 13]
    Economy
    Products
    Omaha, NE/1 987
    Contaminant/
    Watt* fern
    dioxin/liquid
    dtoxin
    furans/oil
    dioxin/liquid
    and sludge
    PCBs(Aroclor
    1254)/soil
    PCBs/soil
    PCBs/sofl
    TCDD, 2, 4-D,
    2, 4, 5-T/liquid
    Conctntratlon
    Mart
    135ppb
    147-83,923 ppb
    120 ppb
    1 20 ppm
    2500* ppm with
    hot soots as high
    as 45,860 ppm
    51 out of 52
    drums, 108 ppm
    1.3 ppm
    17.800 ppm
    2,800 ppm
    Conctntrotlon
    After
    <1 ppb
    <1 ppb
    <0.3 ppb
    <2 ppm
    <1* ppm
    <27ppm
    NO
    334 ppm
    55 ppm
    Voktmt
    Trtottd
    1 5 gallons
    10,000 gallons
    7,550 gallons
    1 ton
    22 tons soil
    3.4 tons
    crushed rock
    52 fifty-five
    gallon drums
    20 gallons
      b - p» raoMM* PCI cogmr
                             Engineerinp Bulletin: Chemical Dehatogenatlon Treatment: APEG Treatment
                                                     6-17
    

    -------
     and how to seek a treiUbility variance for soil and debris:
     Superfund LOR Guide «6A, "Obtaining a Soil and Debris
     Treatabifity Variance for Remedial Actions/ (OSWER Directive
     9347.3-06FS)  (20]; and Superfund  LDR  Guide  #68,
     "Obtaining a Soil and Debris TreatabiRty Variance for Removal
     Actions' (OSWER Directive 9347.3-07FS) (17].   Another
     approach could be to use other treatment techniques in series
     with APEG treatment to obtain desired treatment levels.
    Technology Status
    
        The APEG process has been selected for cleanup of PCB-
    contaminated soils at three Superfund sites:  Wide Beach,
    New  York (September  1985),  Re-Solve,  Massachusetts
    (September 1987), and Sol Lynn, Texas (March 1988). Wide
    Beach is expected to start operation in the summer of 1990
    (9, p. 99] [19].
    
        This technology has received approval from  the EPA's
    Office of Toxic Substance under the Toxk Substances Control
    Act for PCB treatment
    
        Significant advances  are currently being made to the
    APEG technology. These advances employ water rather than
    costly PEG to wet the soil  and require shorter reaction times
    and less energy. These advances should greatly enhance the
    economics of the process. Performance information on this
    modified process is not available at this time for inclusion in
    this bulletin [18].
    
        This technology uses standard equipment The reaction
    vessel must be equipped to mix and heat the soil and reagents.
    A detailed engineering design for a continuous feed, full-scale
    system for use in Guam is currently being completed.  It is
    estimated that a full-scale system can be fabricated and placed
    in operation in 6 to 12 months. Costs to use APEG treatment
    are expected to be in a range of $200-$500/ton.
    EPA Contact
    
        Technology-specific questions regarding APEG technology
    may be directed to:
    
        Charles |. Rogers
        U.S. EPA Risk Reduction Engineering Laboratory
        26 West Martin Luther King Drive
        Cincinnati, Ohio 45268
        Telephone: FTS 684-7757 or (513) 569-7757
                     REFERENCES
     1.   Adams, G.P., and R.L Peterson. Non-Sodium Process
         for Removal of PCBs From Contaminated Transformer
         Oil, Presented at the APCA National Meeting in
         Minneapolis, 1986.
    
     2.   Brunelle, D.J., and D. Singleton. Destruction/Removal
         of Pol/chlorinated Blphenyls From Non-Polar Media —
         Reaction of PCB with  Pdv (Ethylene GlycoQ/KOH.  -~*~
         Chemosphere, 12: 183-796,1983.
     3.   Carpenter, B.H. PCB  Sediment Decontamination
         Processes—Selection for Test and Evaluation, Research
         Triangle Institute, 1987.
    4.   Carpenter, B.H., and D.L Wilson. Technical/Economic
         Assessment of Selected PCB Decontamination
         Processes, journal of  Hazardous Materials, 17: 125-
         148,1988.
    5.   des Hosiers, Paul E. APEG Treatment of Dioxin- And
         Furan-Contaminated Oil at  an Inactive Wood Treating
         Site in Butte, Montana, Presented at the Annual
         Meeting of the American Wood Preserves Institute,
         Washington, D.C.. 1986.
    6.   Komei, A., Charles J. Rogers, and H. Sparks. KPEG
         Application From the  Laboratory to Guam. In:
         Proceedings of the Third International Conference on
         New Frontiers for Hazardous Waste Management  EPV
         600/949/072, Pittsburgh, Pennsylvania, 1989.
    7.   Lauch, R^ and others. Evaluation of Treatment
         Technologies for Contaminated Soil and Debris. In:
         Proceedings of the Third International Conference on
         New Frontiers for Hazardous Waste Management  EPA/
         600/9-89/072. Pittsburgh, Pennsylvania, 1989.
    8.   Locke, B. and others.  Evaluation of Alternative
         Treatment Technologies for CERCLA Soils and Debris
         (Summary of Phase I and Phase II).  EPA Contract No.
         68-03-3389, U.S. Environmental Protection Agency,
         Risk Reduction Engineering  Laboratory, Cincinnati,
         Ohio, (no date).
    9.   NATO/CCMS. Demonstration of Remedial Action
         Technologies for Contaminated Land and
         Groundwater.  In: Proceedings of the NATO/CCMS
         Second International Workshop, Hamburg, Federal
         Republic of Germany, 1988. pp. 97-99.
    10.  Novosad,  C.F., E. Mificic, and R. Peterson.
         Decontamination of a Small PCB Soil Site by the Caljon
         APEG Process, Presented before the Division of
         Environmental Chemistry, American Chemical Society,
         New Orleans, 1987.
    11.  Peterson, R.L, M. Edwins, and C Rogers.  Chemical
         Destruction/Detoxification of Chlorinated Dioxins in
         Soils. In:  Proceedings of the Eleventh Annual Research
         Symposium, Incineration and Treatment of Hazardous
         Wastes. EPA/600/9-45/028,1985.
    12.  Peterson, R.L, and others.  Comparison of Laboratory
         and Reid Test Data in the Chemical Decontamination
         of Dioxin Contaminated Soils, Presented at the ACS
         Meeting in New York, New  York, 1986.
    Engineering Bulletin: Chemical Dehalogenatlon Treatment: APEG Treatment
                                                      6-18
    

    -------
    13.  Taylor. M.L. and others (PQ Associate).
         Comprehensive Report on the KPEC Process for
         Treating Chlorinated Wastes. EPA Contract No. 68-03.
         3413, U.S. Environmental Protection Agency, Risk
         Reduction Engineering Laboratory, Cincinnati, Ohio,
         1989.
    14.  Tieman, T.O., and others.  Decrtorlnation of Organic
         Compounds Contained in Hazardous Wastes Using the
         KPEC Reagent On-Press). In: Proceedings of the
         Symposium on Hazardous Waste Treatment, American
         Chemical Society Symposium Series, 1990.
    IS.  Tieman, T.O., and others.  Dechtorination of PCDO and
         PCDF Sorted on Activated Carbon Using the KPEC
         Reagent Chemosphere. 19(1-6): 573-578,1989.
    16.  Tieman, T.O., and others.  Laboratory and Field Test to
         Determine the Efficacy of KPEC Reagent for
         Detoxification of Hazardous Wastes Containing
         Polychlorinated Dibenzo-p-Dioxins (PCDD) and
         Dibenzofurans (PCDF) and Soils Contaminated with
         Such Chemical Wastes. Chemosphere,  18 (1-16): 835-
         841,1989.
    17.  Superfund LDR Guide #68: Obtaining a Soil and Debris
         Treatability Variance for Removal Actions.  OSWER
         Directive 9347.3-07FS, U.S. Environmental  Protection
         Agency, 1989.
    18.  U.S. Patent Number 4,675,464, Chemical Destruction
         of Halogenated Aliphatic Hydorcarbons. June 23,1987,
         with Employee Report of Invention (Charles Rogers and
         Alfred KomeQ, Case No. WQO-48S-89(E), U.S.
         Environmental Protection Agency, 1988.
                     19.  Innovative Technology: Ctycolate Dechkxination.
                         OSWER Directive 9200.S-25FS, U.S. Environmental
                         Protection Agency, 1989.
                     20.  Superfund LDR Guide I6A:  Obtaining a Soil and
                         Debris Treatabitity Variance for Remedial Actions.
                         OSWER Directive 9347.3-06FS, U.S. Environmental
                         Protection Agency, 1989.
                     21.  Catalytic Dehydrohalogenatlon:  A Chemical
                         Destruction Method for Halogenated Organks, Project
                         Summary. EPA/600/52-86/113,  U.S. Environmental
                         Protection Agency, 1987.
                     22.  Peterson, Robert L, U.S. Patent Nos. 4,474,013 (3/4/
                         86), 4,532,028 (7/30/85), and 4,447,541 (5/8/84).
                     23.  Technology Screening, Guide for Treatment of CERCLA
                         Soils and Sludges. EPA/540/2-88/004, US.
                         Environmental Protection Agency, 1989.
    
    
                     OTHER REFERENCES
    
                     Brunelle, D.)., and D. A. Singleton.  Chemical Reaction of
                         Polychorinated Biphenyb on Soils with Polyethylene
                         GlycoO/KOH. Chemosphere, 14(2):173-181,1985.
                     Komel, A., and C. Rogers. PCB Destruction: A Novel
                         Dehalogenation Reagent Journal of Hazardous
                         Materials, 12:161-76,1985.
                    Arienti, M., L Wilk, M. Jasinski, and N. Prominski. Dtoxin-
                         Containing Wastes Treatment Technologies. Noyes
                         Data Corporation, Park Ridge, New Jersey, 1988. pp.
                         156-168.
     United States
     Environmental Protection
     Agency
    Center for Environmental Research
    Information
    Cincinnati, OH 45268
         BULK RATE
    POSTAGE & FEES PAID
            EPA
      PERMIT No. G-35
     Official Business
     Penalty for Private Use S300
                                                     6-19
    

    -------
    6.16         KEY REFERENCE LIST - DECHLORINATION
    
    
    des Rosiers, P.E. 1987. Chemical Detoxification Using Potassium Polyethylene Glycolate (KPEG)
           for Treating Dioxin and Furan Contaminated Pentachlorophenol, Spent Solvents and
           Polychlorinated Biphenyls Wastes.  U.S. Environmental Protection Agency, Office of
           Environmental Engineering and Technology Demonstration, Washington, D.C.
    
    Generaux, J.S. June 1991. Wide Beach Development Site - Case Study.  Presented at Third
           Forum on Innovative Hazardous Waste Treatment Technologies, June 1991. (unpublished)
    
    Kim, B.C., and R.F. Olfenbuttel. 1990. Demonstration of BCDP Process at USN PWC Site  in
           Guam. Presented at the EPA Technology Transfer Conference on the BCD Process, April
           30, Cincinnati, Ohio.
    
    Kernel, A., and C. Rogers. 1985. PCB Destruction: A Novel Dehalogenation Reagent. Journal
           of Hazardous Materials, 12:171-176.
    
    Rogers, Dr. Charles, U.S. EPA-HWERL, Center for Environmental Information, 26 West
           Martin Luther King Dr., Cincinnati, OH, tel. (513) 569-7757.  No papers are
           available on the BCD technology.
    
    Rogers, C.J. 1987. Field Validation of the KPEG Process to Destroy PCBs, PCDDs, and PCDFs
           in Contaminated Waste. Preprint Extended Abstract, 194th National Meeting of the
           American Chemical Society, August 30 - September 4, 1987, 27(2):433-434.
    
    U.S. Environmental Protection Agency, 1990.  Comprehensive Report on the KPEG
           Process for Treating Chlorinated Wastes,  NTIS PB90-163643.
    
    U.S. Environmental Protection Agency, 1989.  Innovative Technology: Glycolate Dehalogenation,
           OSWER Directive 9200.5-254-FS (Fact Sheet Attached).
    
    U.S. Environmental Protection Agency, 1990.  Inventory of Treatability Study Vendors,
           Volume 1, EPA/540-2-90/003a.
    
    U.S. Environmental Protection Agency, 1991.  Guide for Conducting Treatability Studies Under
           CERCLA: Chemical Dehalogenation.
    
    U.S. Environmental Protection Agency, 1991.  BCD:  An EPA Patented Process for Detoxifying
           Chlorinated Wastes. (Fact Sheet attached)
    Note:  A more comprehensive bibliography is being developed.
                                              6-20
    

    -------
                                TABLE OF CONTENTS
    
    Section
    
    7.0  BIOREMEDIATION	  7-1
    
          7.1   TECHNOLOGY DESCRIPTION	  7-1
    
          7.2   EXHIBIT 1 - COMPARISON OF BIOREMEDIATION TECHNOLOGIES . .  7.-2
    
          7.3   TECHNOLOGY STATUS	  7-5
    
          7.4   APPLICATIONS  	  7-5
    
          7.5   TECHNOLOGY STRENGTHS	  7-6
    
          7.6   TECHNOLOGY LIMITATIONS	  7-6
    
          7.7   POTENTIAL MATERIALS HANDLING REQUIREMENTS	  7-7
    
          7.8   EXHIBIT 2 - STRENGTHS AND LIMITATIONS OF BIOREMEDIATION
               TECHNIQUES	  7-8
    
          7.9   EXHIBIT 3 - DEGRADATION POTENTIAL	  7-10
    
          7.10  EXHIBIT 4 - BIOREMEDIATION OF HAZARDOUS WASTES SITES
               WORKSHOP  	  7-11
    
          7.11  EXHIBIT 5 - WASTE CHARACTERISTIC TABLES	  7-12
    
          7.12  EXHIBIT 6 - DATA FROM THE SEMI-ANNUAL STATUS REPORT ...  7-16
    
          7.13  EXHIBIT 7 - INNOVATIVE TREATMENT TECHNOLOGIES:  SEMI-
               ANNUAL STATUS REPORT	  7-18
    
          7.14  EXHIBIT 8 - ENGINEERING BULLETIN: SLURRY
               BIODEGRADATION	  7-24
    
          7.15  EXHIBIT 9 - GLOSSARY OF BIOREMEDIATION TERMINOLOGY	  7-32
    
          7.16  EXHIBIT 10 - SITE TECHNOLOGY PROFILE - INTERNATIONAL
               ENVIRONMENTAL TECHNOLOGY/YWC MIDWEST	  7-34
    
          7.17  EXHIBIT 11 - SITE TECHNOLOGY PROFILE - ECOVA
               CORPORATION  	  7-36
    
          7.18  EXHIBIT 12 - SITE TECHNOLOGY PROFILE - IN-SITU FIXATION
               COMPANY	  7-38
    
          7.19  EXHIBIT 13 - SITE TECHNOLOGY PROFILE - REMEDIATION
               TECHNOLOGIES, INC	  7-40
    
          7.20  EXHIBIT 14 - SITE TECHNOLOGY PROFILE -
               ZIMPRO/PASSAVANT, INC	  7-42
    
          7.21  EXHIBIT 15 - SITE TECHNOLOGY PROFILE - BIOVERSAL USA,
               INC	  7-44
    
         7.22  EXHIBIT 16 - SITE TECHNOLOGY PROFILE - BIOTROL, INC	  7-46
    
    
         7.23  EXHIBIT 17 - BIOREMEDIATION IN THE FIELD	  7-48
    
         7.24  EXHIBIT 18 - INNOVATIVE TECHNOLOGY: SLURRY-PHASE
               BIODEGRADATION	  7-64
    
         7.25  EXHIBIT 19 - BIOREMEDIATION OF CONTAMINATED SURFACE
               SOILS  	  7-66
    
         7.26  KEY REFERENCE LIST - BIOREMEDIATION	  7-92
    

    -------
                                      7.0  BIOREMEDIATION
     7.1
    TECHNOLOGY DESCRIPTION
            Bioremediation technologies involve enhancing biodegradation of contaminants through
     the stimulation of indigenous soil and ground-water microbial populations or the addition of
     proprietary, natural microbial species.  Natural biodegradative processes are enhanced by
     optimizing conditions necessary for microbes to grow and complete metabolic pathways.
     Bioremediation is applicable only for treating organic contaminants.
    
            Several different types of bioremediation technologies can be utilized to treat hazardous
     wastes and these technologies can be classified in two broad categories:
    
                  •      Above ground (including slurry phase, contained solid phase, land
                         treatment, and composting)
                  •      In situ
    
           The different approaches vary in terms of the  process control, time needed and cost of
    remediation.  Exhibit 1 shows the general relationship of the different  bioremediation
    technologies with respect to process control, cost, and  amount of effort needed in the
    engineering/treatability testing phase of the project. Slurry phased bioremediation, for example,
    is the  most easily controlled process and often the most expensive.
         Soils or sludge containing
         organics
         Microorganisms
         Nutrients and oxygen
         Water
                      Above Ground
                      Bioremediation
    Cleaned media
    Fugitive emissions *
    Process water/leachate
    requiring treatment *
    ' Depending on process
                                     ' Slurry phase
                                     > Contained solid phase
                                     • Land treatment
                                              7-1
    

    -------
    7.2
    EXHIBIT 1 - COMPARISON OF BIOREMEDIATION TECHNOLOGIES
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                                      7-2
    

    -------
    Slurry Phase
    
           Slurry-phase bioremediation involves mixing of excavated soil with water to create a
    slurry that is mechanically agitated in an environment (usually a tank, although in situ lagoon
    applications are possible) with appropriate ambient conditions of nutrients, oxygen, pH, and
    temperature. Microorganisms may be seeded initially or added continuously throughout an
    appropriate  residence  time.  Upon completion of the process, the slurry is dewatered, and the
    treated soil is disposed.
    
    Land Treatment (Land Farming)
    
           This process involves placing contaminated soil in a prepared, lined treatment bed.
    Wastes may  be stockpiled prior to application which occurs in a series of lifts  (several inches
    thick). Supplements such as manure or nutrients may  be added and the soil is periodically
    cultivated. Use of standard construction/farm equipment allows  management of a large area of
    treatment.
    
    Contained Solid Phase
    
           This represents a variety of processes similar to land farming, but provides greater process
    control.  Although these systems have been used in Europe, they  have not been used in this
    country.  Excavated soils are mixed, soil amendments (water, nutrients, pH modifiers, bulk
    modifiers, and microbes) are added, and the conditioned soil placed in an enclosure such as a
    building, tank, or modified pad.   This may improve process control by eliminating water run-
    on/off, moderating temperature, allowing  greater moisture control and controlling VOC
    emissions.  The soil may be several feet  deep and  require special  equipment or processes for
    reconditioning or aeration.  To the extent  the building enclosure  satisfies the RCRA definition of
    a tank, the process may be  used to satisfy  land ban requirements.
    
           Composting is a solid-phase, above-ground biological  treatment process in which
    structurally  firm material is added to the contaminated material to enhance the decomposition of
    organic compounds.  Water, oxygen and nutrients are added, too,  to facilitate  microbial growth.
    This technology has not yet been  selected  for use  at a  Superfund  site  although the Army has had
    some success using composting to degrade munitions wastes in pilot scale tests.
    
           Composting, particularly if conducted in a closed reactor, is very similar to contained
    solid phase bioremediation  and is included here with the discussion of contained solid phase
    bioremediation.
                                                7-3
    

    -------
            Soils or ground water
            containing soluble organics1
            Infiltration water
            Nutrients and oxygen
            Microorganisms
           In Situ
    Biodegradation
    Cleaned media in situ
    Recovered water is
    treated and recycled/
    discharged
                                          • Time: months to years
     In Situ
            This process promotes and accelerates the natural biodegradation processes in the
    
     undisturbed soil.  Generally, it consists of a water recirculation system with above ground water
    
     treatment and conditioning of the infiltration water with nutrients and an oxygen source  The
    
     system is usually designed to allow uncontaminated ground water to enter the zone of
    
     contamination but prevents ground water from leaving the contaminated zone.  Common system
    
     design consists of central withdrawal of ground water and reinfiltration through well injection or
     infiltration galleries at several locations around the outer border of the treated area
    
     Biodegradation relies on the contact between contaminants (in the water phase) and
    
     microorganisms.  In general, subsoil saturation is required.  Oxygen is usually the limiting factor
    
     Sources of oxygen include air, pure oxygen, and hydrogen perodixe.  Although hydrogen
    
     peroxide is commonly used, it can be relatively expensive and has a variety of technical problems
    
     associated with its use.  Nitrate is being researched with some success as an alternative electron
     receptor.
    7.3
                  TECHNOLOGY STATUS
    
                                                                 ir fu"-scau
                                               7-4
    

    -------
                         Five hazardous waste sites have been selected for field evaluation under
                         the Bioremediation Field Initiative program. These are:  Champion site,
                         MT; Allied Signal site, MI; Hill AFB, UT; Eielson AFB, AL; Park City
                         Pipeline Spill, KS.
                         Treatments for Excavated Soil
                         •     Several slurry-phase and solid-phase biological treatment systems
                               are commercially available.
    
                         •     Land treatment (farming) was approved in 12 RODs; slurry-phase
                               reactors have been chosen in five RODs; and solid phase
                               bioremediation has been selected in three RODs.
                         In Situ Biodegradation
    
                         •      A recent international survey found 23 remediation projects in the
                                Netherlands, West Germany, and the U.S.A.
    
                         •      In situ treatment has been selected for 11 NPL sites and two
                                emergency response actions.
    
                         •      There have been demonstrations that some halogenated compounds
                                may be degraded by bacteria that use methane as their food source.
    7.4           APPLICATIONS
                         The U.S. Army Toxic and Hazardous Materials Agency has pilot tested
                         composting of soils contaminated with TNT, DNT and other by products
                         of munitions manufacture for 40 days.  The original contaminants were
                         successfully degraded and the wastes found to be non-toxic.  The Army is
                         now analyzing the product for the presence of byproducts and
                         intermediary products of the degradation of TNT and DNT.
    
                         The Superfund sites where bioremediation has been selected are
                         contaminated with VOCs (sixteen sites), PAHs (twenty-one sites), SVOCs
                         (twenty-two sites),  and  creosote (eleven sites).  The technology has broad
                         applications for organic wastes.
    
                         PAH's with four or more rings  are more difficult to degrade than simpler
                         PAHs.  The literature reports some success with white rot fungus (Bumpus,
                         1989) and  Mycobacterium (Heitkamp, et al., 1988)  (See Key Reference
                         List)
    
                         Recent treatability studies conducted at the American Creosote Works
                         Superfund site (Muller et al.  1991) with creosote contaminated soils and
                         sediments  suggest that:
    
                                •     Solid phase bioremediation strategies may not effectively
                                      meet acceptable  treatment standards for creosote
                                      contaminated soils and sediments in the time defined by the
                                      studies (90 days).  Relatively poor removals of
    
    
                                               7-5
    

    -------
                                       pentachlorophenol (PCP) and other multi-ring, toxic
                                       compounds were found (0% to 50%).
    
                                •      Slurry phase bioremediation strategies can be effectively
                                       employed to remediate creosote-contaminated materials.
                                       Within 14 days, 2 ring PAHs were totally degraded and the
                                       concentrations of PAHs  with 3, 4, and more rings were
                                       effectively reduced.  The reduction of the heavier PAHs
                                       was most significant when there was a significant
                                       concentration of phenolics and 2-ring PAHs in the
                                       contaminated material.
    
                                •      These studies indicate that PAHs with two rings biodegrade
                                       more readily than those  with  three rings which, in turn
                                       degrade more readily than those with four rings.
    
                         Bioremediation is appropriate for soil, sludges, sediments, ground  water
                         and surface water.
    
                         Bioremediation may not be applicable at sites where the contaminated
                         material contains extremely high concentrations of heavy metals, highly
                         chlorinated organics, pesticides, herbicides, or inorganic salts. High
                         concentrations of these contaminants may be toxic to the microorganisms
                         needed for biodegradation.
    
                         This technology requires that temperature, moisture content, pH, nutrient
                         levels, and oxygen content be within the limits required by the
                         microorganisms. In situ bioremediation may not be applicable at sites
                         where these parameters are not within those limits.
    7.5           TECHNOLOGY STRENGTHS
                         The technologies have fairly broad applicability for organic wastes.
    
                         Biological technologies are likely to be considered as natural processes and
                         supported by the public.
    
                         Cost effective
    
                         Please see Exhibit 2 for additional strengths related to the different  types
                         of bioremediation.
    7.6           TECHNOLOGY LIMITATIONS
                         Recent treatability studies conducted at the American Creosote Work
                         Superfund site (Mueller, et. al., 1991) with creosote contaminated soils and
                         sediments suggest that:
    
                                •      Abiotic losses from bioremediation of creosote
                                       contaminated soils and sediments can be significant.
                                       Volatilization is more significant with the low molecular
                                       weight compounds within creosote (volatilization accounted
                                       for 12% of the observed losses of naphthalene during solid
                                       phase bioremediation of sediments) Significant quantities
    
                                                7-6
    

    -------
                                      of high molecular weight compounds were found adsorbed
                                      to the bioreactor sludge and residue in slurry-phased
                                      bioremediation.
    
                  •      Complex waste mixtures can inhibit biological activity
    
                  •      Performance is highly dependent on site conditions
    
                  •      Some wastes are hard or slow to  degrade
    
                  •      A better understanding and optimization of the science is needed.
    
                  •      Public can be fearful of microbes suspected of having been "genetically
                         engineered."
    
                  •      Please see Exhibit 2 for additional limitations related to the different types
                         of bioremediation.
    
    
    7.7           POTENTIAL MATERIALS HANDLING REQUIREMENTS
    
    
                  For slurry phase, land treatment,  contained solid phase:
    
                  •      Excavation is required.
    
                  •      The waste material must be screened to remove debris and large particles.
    
                  •      Size reduction techniques  can be used to achieve feed size required by the
                         equipment.
    
                                Slurry-phase bioremediation works best if the particles are
                                generally less than 1/4 inch in diameter.  This small size is needed
                                to ensure adequate contact between the biomass and the
                                contaminants and to keep the particles in suspension in the slurry.
    
                  •      The pH of the waste may  require adjustment.  Bioremediation works only
                         for material with a generally neutral pH (>4.5 and <8.5).  If the
                         contaminated material  does not fit within  this range, acid or base must be
                         added and the material mixed.  As the biological processes proceed, the pH
                         of the material may change. The pH may need to be adjusted several
                         times throughout the operation of the technology.
    
                  •      The waste may require dewatering or wetting. Biological activity is
                         promoted when  the moisture content of the contaminated material is
                         between 40 percent and 80 percent.
    
                  •      The temperature of the wastes may be adjusted. Biological activity
                         proceeds more rapidly under warm conditions. Generally, bioremediation
                         projects should be operated between 60° F and 110° F.
    
                  •      The waste material,  water, added nutrients, and oxygen will need to be
                         mixed to promote microbial growth.
                                                7-7
    

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    1 Treatment in a device which is defined as a '
    RCRA is viable means of achieving land ban
    1 Testing is underway on PCB waste in rotatin
    allow control of oxygen levels
    1 No secondary containment is required if the
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    7-8
    

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    required. Relevant physical and chemical parameters include
    pH, redox conditions, temperature, TOC, Fe and Mn
    concentrations, heavy metals, and nutrients (nitrogen and
    phosphorous) dissolved oxygen, carbon dioxide, nitrate, and
    
    
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    • The precise fate of degraded hydrocarbons, such as gasoline,
    not yet known
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    • Most difficult process to conclusively monitor cleanup
    efficiency since no mixing takes place, i.e., il may be difficult
    to get characteristic or representative samples if soil
    concentrations vary widely.
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    • Water recirculation may be limited by biofouling or biological
    growth which reduces permeability
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
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    nutrients in low permeability or highly heterogeneous regimes
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
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    • Some states may not allow reinjection of treated ground wate
    therefore, amendments must be delivered to the injection
    point in clean water
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    • With the current state-of-the-art, in situ bioremediation is
    relatively ineffective for LNAPL and DNAPL
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
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                                                           C/3
    7-9
    

    -------
    7.9
       EXHIBIT 3 - DEGRADATION POTENTIAL
              Degradation Potential
       HHHHHHHH
       I  I I  I  l I  I  I
     H-C-C-C-C-C-C-C-C-H
       I  I I  I  I I  I  I
       HHHHHHHH
          Octane
    
    
    
           /CH^
        CH      CH
        Of     CH
           ^CH*
    
         Benzene
        H
          \
          C=C
    cr
               \
                Cl
      Trichloroethylene
           (TCE)
                        7-10
    

    -------
    7.10
    EXHIBIT 4 - BIOREMEDIATION OF HAZARDOUS WASTE SITE
         WORKSHOP - SPEAKER SLIDE COPIES AND SUPPORTING
         INFORMATION
               Technology Transfer
                    February 1 989
    CERI-89-11
              Bioremediation of
              Hazardous Waste Sites
              Workshop
    
              Speaker Slide Copies and
              Supporting Information
    

    -------
    7.11
    EXHIBIT 5 - WASTE CHARACTERISTIC TABLES
    Waste Type:  Soils and Sludges
    Technology:  Biodegradation
        Characteristics
      Impacting Process
          Feasibility
                      Reason for Potential Impact
            Data
         Collection
        Requirements
    Variable waste
    composition
    
    Water solubility
    Biodegradability
    Temperature outside
    59-158T (15-70°C)
    range
    
    Nutrient deficiency
    Oxygen deficiency
    
    Moisture content
    pH outside 4.5-8.5
    range
    
    Microbial population
    Water and air
    emissions and
    discharges
    (composting only)
    
    Compaction of
    compost (composting
    only)
                Inconsistent biodegradation caused by
                variation in biological activity.
    
                Contaminants with low solubility are
                harder to diodegrade.
    
                Low biodegradability inhibits process.
                Larger, more diverse microbial population
                present in this range.
                Lack of adequate nutrients for biological
                activity (although nutrient supplements
                may be added).
    
                Lack of oxygen is rate limiting.
    
                A moisture content of greater than 79%
                affects bacterial activity and availability
                of oxygen.  A moisture content below
                40% severely inhibits bacterial activity.
    
                Inhibition of biological activity
                If indigenous microorganisms not present,
                cultured strains can be added.
    
                Potential environmental and/or health
                impacts (control achieved through air
                scrubbing, carbon filtration, forced
                aeration, cement liner).
    
                Particles tend to coalesce and form an
                amorphous mass that is not easily
                maintained in an aerobic environment
                (wood chips or shredded tires may be
                added as bulking agents).
    Waste composition
    Solubility
    Chemical constituents,
    bench-scale testing
    
    Temperature
    monitoring
    C/N/P ratio
    Oxygen monitoring
    
    Ratio of air to water
    in interstices, porosity
    of composting mass
    Sludge pH testing
    Culture test
    Concentrations of
    contaminants
    Determine integrity,
    physical nature of
    material
    Source: Technology Screening Guide for Treatment of Soils and Sludges EPA/540/2-88/004
            (1988)
                                         7-12
    

    -------
    7.11
    EXHIBIT 5 - WASTE CHARACTERISTIC TABLES (continued)
    Waste Type:  Soils and Sludges
    Technology:  Biodegradation (continued)
       Characteristics
      Impacting Process
          Feasibility
                      Reason for Potential Impact
            Data
         Collection
       Requirements
    Nonuniform particle
    (composting only)
    
    Presence of elevated
    levels of:
    
    • Heavy metals
    • Highly chlorinated
      organics
    • Some pesticides,
      herbicides
    • Inorganic salts
                Waste mixtures must be of uniform
                particle size.
    
                Can be highly toxic to microorganicsms.
    Particle size
    distribution
    
    Analysis for priority
    pollutant
    Source: Technology Screening Guide for Treatment of Soils and Sludges EPA/540/2-88/004
            (1988)
                                              7-13
    

    -------
    7.11
    EXHIBIT 5 - WASTE CHARACTERISTIC TABLES (continued)
     Waste Type: Soils and Sludges
     Technology: In Situ Biodegradation
        Characteristics
       Impacting Process
          Feasibility
                      Reason for Potential Impact
            Data
         Collection
        Requirements
     Variable waste
     composition
    
     Water solubility
     Biodegradability
     Temperature outside
     77-158T (25-70eC)
     range
    
     Nutrient deficiency
     Oxygen deficiency
    
     Moisture content
     pH oustide 4.5-7.5
     range
    
     Microbial population
    Presence of elevated
    levels of:
    
    • Heavy metals
    • Highly chlorinated
      organics
    • Some pesticides,
      herbicides
    • Inorganic salts
                Inconsistent biodegradation caused by
                variation in biological activity.
    
                Contaminants with low solubility are
                harder to biodegrade.
    
                Low biodegradability inhibits process.
                Larger, more diverse microbial population
                present in this range.
                Lack of adequate nutrients for biological
                activity (although nutrient supplements
                may be added).
    
                Oxygen depletion slows down the process.
    
                A moisture content of greater than 79%
                affects bacterial activity and availability
                of oxygen.  A moisture content below
                40% severely inhibits bacterial activity.
    
                Inhibition of biological activity.
                If indigenous microorganisms not present,
                cultured strains can be added.
    
                Can be highly toxic to microorganisms.
    Waste composition
    
    
    Solubility
    
    
    Chemical constituents,
    presence of metals/
    salts, bench-scale
    testing
    
    Temperature
    monitoring
    
    
    C/N/S ratio
    Oxygen monitoring
    
    Ratio of air to water
    in interstices, porosity
    of composting mass
    Sludge pH testing
    Culture test
    Analysis for
    contaminants
    Source:  Technology Screening Guide for Treatment of Soils and Sludges EPA/540/2-88/004
             (1988)
                                         7-14
    

    -------
    7.11
                   EXHIBIT 5 - WASTE CHARACTERISTIC TABLES (continued)
     Waste Type: Soils and Sludges
     Technology: In Situ Biodegradation (continued)
         Characteristics
       Impacting Process
           Feasibility
          Reason for Potential Impact
            Data
         Collection
       Requirements
     Unfavorable soil
     characteristics
    
     • Low permeability
     • Variable soil
       conditions
    
     • Low soil pH (<5.5)
    
     • Low soil organic
       content
    
     • Low moisture
       content (<10%)
    
     Unfavorable site
     hydrology
    
     Unfavorable
     groundwater quality
     parameters
    
     • Low dissolved
       oxygen
    Hinders movement of water and nutrients
    through contaminated area.
    
    Inconsistent biodegradation due to
    variation in biological activity.
    
    Inhibition of biological activity.
    
    Lack of organic substrate for biological
    growth.
    
    Subsurface biological growth requires
    adequate moisture.
    
    Groundwater flow patterns must permit
    pumping for extraction and reinjection.
    Oxygen necessary for biological growth.
    Percolation testing
    
    
    Soil mapping
    
    
    Soil pH testing
    
    Soil humus content
    
    
    Soil moisture content
    Site hydrogeology
    must be well defined.
      > Low pH, alkalinity
    Inhibition of biological activity.
    Dissolved oxygen in
    ground water, deter-
    mine amount of
    hydrogen peroxide
    needed to satisfy
    oxygen demand
    
    pH and alkalinity of
    ground water
     Source: Technology Screening Guide for Treatment of Soils and Sludges EPA/540/2-88/004
             (1988)
                                          7-15
    

    -------
    7.12
    EXHIBIT 6 - DATA FROM THE SEMI-ANNUAL STATUS REPORT
     Selection Frequency"
                 9
                 8
                 7
    
       NUMBER   6
       Of TIMES   5
      SELECTED  4
    
                 3
                 2
                 1
                 0
                                      Ex Situ Biroremediation
                           85
                      86    87    88
                        FISCAL YEAR
    89
    90
           * Data derived from 1982 • 1990 Records of Decision ( RODs ) and anticipated design and
            construction activities.
                                                               September 1991
     Selection  Frequency
    
                 6
                            In Situ Bioremediation
       NUMBER
       Of TIMES
      SELECTED
                           85
                      86    87    88
                        FISCAL YEAR
    89
    90
           * Data derived from 1982 - 1990 Records of Decision ( RODs ) and anticipated design and
            construction activities.
                                                               September 1991
                                      7-16
    

    -------
    7.12
    EXHIBIT 6 - DATA FROM THE SEMI-ANNUAL STATUS REPORT
               (continued)
             Contaminants Treated By Bioremediation
      Number
        of
     Super-fund
       Sites
                     BTEX
                   Creosote/PAHs
    PCP
    Phenols
       * Data derived from 1982 - 1990 Records of Decision (RODs) and anticipated design and construction
        activities. At some sites, the treatment is for more than one major contaminant.
                                      7-17
    

    -------
    
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    -------
         7.14
    EXHIBIT 8 - ENGINEERING BULLETIN: SLURRY BIODEGRADATION
    &EPA
                               United States
                               Environmental Protection
                               Agency
                                      Office of Emergency and
                                      Remedial Response
                                      Washington, DC 20460
    Office of
    Research and Development
    Cincinnati, OH 45268
                               Superfund
                                      EPA/540/2-90/016
    September 1990
           Engineering Bulletin
           Slurry  Biodegradation
    Purpose
    
        Section 121(b) of the Comprehensive  Environmental
    Response, Compensation, and Liability Act (CERCLA) mandates
    the Environmental Protection Agency (EPA) to select remedies
    that "utilize permanent solutions and alternative treatment
    technologies or resource recovery technologies to the maximum
    extent practicable" and to prefer remedial actions in which
    treatment "permanently and significantly reduces the volume,
    toxicity, or mobility of hazardous substances,  pollutants and
    contaminants as a principal element." The Engineering Bulletins
    are a series of documents that summarize the latest information
    available on selected treatment and site remediation
    technologies and related issues. They provide summaries of
    and references for the latest  information to  help remedial
    project managers,  on-scene coordinators,  contractors, and
    other site cleanup managers understand the type of data and
    site characteristics needed to evaluate a technology for potential
    applicability to their Superfund or other hazardous waste site.
    Those  documents that  describe individual treatment
    technologies focus  on remedial investigation scoping needs.
    Addenda will be issued periodically to update the original
    bulletins.
    Abstract
    
        In a slurry biodegradation system, an aqueous slurry is
    created by combining soil or sludge with water. This slurry is
    then biodegraded aerobically using a self-contained reactor or
    in a lined lagoon. Thus, slurry biodegradation can be compared
    to an activated sludge process or an aerated lagoon, depending
    on the case.
    
        Slurry biodegradation is one of the biodegradation methods
    for treating  high concentrations  (up to  250,00  mg/kg) of
    soluble organic contaminants in soils and sludges. There are
    two main  objectives for using this technology: to destroy the
    organic contaminant and, equally important, to reduce the
    volume of contaminated material. Slurry biodegradation is not
    effective in treating inorganics, including heavy metals.  This
    technology is in developmental stages but appears to  be a
    promising technology for cost-effective treatment of hazardous
    waste.
                                            Slurry biodegradation can be the sole treatment technology
                                        in a complete cleanup system, or it can be used in conjunction
                                        with other biological, chemical, and physical treatment. This
                                        technology was selected as a component of the remedy for
                                        polychlorinated biphenyl (PCB)-contaminated oils at the General
                                        Motors Superfund site at Massena, New York, [11, p. 2]* but has
                                        not been a preferred alternative in any record of decision [6, p.
                                        6].  It may be demonstrated  in  the Superfund Innovative
                                        Technology Evaluation  (SITE) program.  Commercial-scale
                                        units are in operation. Vendors should be contacted to determine
                                        the availability of a unit for a  particular site.  This bulletin
                                        provides information on the technology applicability, the types
                                        of residuals produced, the latest performance data, site
                                        requirements, the status of the technology, and sources for
                                        further information.
                                        Technology Applicability  -»
    
                                            Biodegradation is a process that is considered to have
                                        enormous potential to reduce hazardous contaminants in a
                                        cost-effective manner. Biodegradation is not a feasible treatment
                                        method for all sites. Each vendor's process may be capable of
                                        treating only some contaminants. Treatability tests todetermine
                                        the biodegradability of the contaminants and the solids/liquid
                                        separation that occurs at the end of the process are very
                                        important.
    
                                            Slurry biodegradation has been shown to be effective in
                                        treating  highly contaminated soils and sludges that have
                                        contaminant concentrations  ranging from 2,500 mg/kg to
                                        250,000 mg/kg.  It has the potential to treat a wide range of
                                        organic contaminants such as pesticides, fuels, creosote, penta-
                                        chlorophenol (PCP), PCBs, and some halogenated  volatile
                                        organics.  It is expected to treat coal tars, refinery  wastes,
                                        hydrocarbons, wood-preserving wastes, and  organic and
                                        chlorinated organic sludges. The presence of heavy metals and
                                        chlorides may inhibit the microbial metabolism and  require
                                        pretreatment. Listed Resource Conservation and Recovery Act
                                        (RCRA) wastes it has treated are shown in Table 1 [10, p. 106].
    '[Reference number, page number]
                                                       7-24
    

    -------
                            Table 1
                 RCRA-Listed Hazardous Wastes
        Wood Treating Wastes
    
        Dissolved Air Floatation (OAF) Float
    
        Slop Oil Emulsion Solids
    K001
    
    K048
    
    K049
        American Petroleum Institute (API) Separator
        Sludge                                 K051
        The effectiveness of this slurry biodegradation on general
    contaminant groups for various matrices  is shown  in Table
    2 [12, p. 13].  Examples of constituents within contaminant
    groups are provided in Reference 12, 'Technology Screening
    Guide for Treatment of CERCLA Soils and Sludges." This table
    is  based on current available information or professional
    judgment when no information was available.  The proven
    effectiveness of the technology for a particular site or waste
    does not ensure that it will be effective at all sites or that the
    treatment efficiency achieved will be acceptable at other sites.
    For the ratings usedforthis table, demonstrated biodegradability
    means that, at some scale, treatability was tested to show that,
    for that particular contaminant and matrix, the technology was
    effective.  The  ratings of potential  biodegradability and no
    expected biodegradability are based upon expert judgment.
    Where potential biodegradability is indicated, the technology
    is believed capable of successfully treating the contaminant
    group. When the technology is not applicable or will probably
    not work for a particular contaminant group, a no-expected-
    biodegradability rating  is given.  Another source of general
    observations and average removal  efficiencies for different
    treatability groups is contained in the Superfund LDR Guide
    #6A, "Obtaining a Soil and  Debris Treatability Variance for
    Remedial Actions," (OSWER Directive 9347.3-06FS [10], and
    Superfund LDR Guide  #6B,  "Obtaining a Soil and Debris
    Treatability Variance for Removal Actions," (OSWER Directive
    9347.3-07FS [9].
    Limitations
    
        The various characteristics limiting the process feasibility,
    the possible reasons for these, and actions to minimize impacts
    of these limitations are listed in Table 3 [11, p. 2]. Some of these
    actions could be a part of  the  pretreatment process.  The
    variation of these characteristics in a particular hardware design,
    operation, and/or configuration for a specific site will largely
    determine the viability of the technology and cost-effectiveness
    of the process as a whole.
                                              Table 2
                              Degradability Using Slurry Biodegradation
                           Treatment on General Contaminant Groups for
                                    Soils, Sediments, and Sludges
    Contaminant Croups
    
    
    
    3
    |
    0
    
    
    
    
    
    |
    |
    ""
    
    
    
    Halogenated volatiles
    Halogenated semivolatiles
    Nonhalogenated volatiles
    Nonhalogenated semivolatiles
    PCBs
    Pesticides
    Dioxins/Furans
    Organic cyanides
    Organic corrosives
    Volatile metals
    Nonvolatile metals
    Asbestos
    Radioactive materials
    Inorganic corrosives
    Inorganic cyanides
    Oxidizers
    Reducers
    Biodegradability
    All Matrices
    V
    •
    V
    •
    V
    •
    a
    V
    =1
    3
    G
    Q
    a
    Q
    T
    Q
    a
                      • Demonstrated Effectiveness: Successful treatability test at somescalecompleted
                      V Potential Effectiveness: Expert opinion that technology will work
                      Q No Expected Effectiveness: Expert opinion that technology will not work
                      Technology Description
    
                          Figure 1 is a schematic of a slurry biodegradation process.
    
                          Waste preparation (1) includes excavation and/or moving
                      the waste material to the process where it is normally screened
                      to remove debris and  large objects. Particle size reduction,
                      water addition, and pH and temperature adjustment are other
                      important waste preparation steps  that may be required to
                      achieve the optimum inlet feed characteristics  for maximum
                      contaminant reduction. The desired inlet feed  characteristics
                      [6, p. 14] are:
                      Organics:  .025-25%
                      Solids:     10-40%
                      Water:     60-90%
                      Solids particle size:
    by weight
    by weight
    by weight
    Less than 1/4'
    Temperature: 15-35*C
    pH: 4.5-8.8
                                                         Engineering Bulletin: Slurry Biodegradation Treatment
                                                            7-25
    

    -------
         After appropriate pretreatment, the wastes are suspended
     in a slurry form and mixed in a tank (2) to maximize the mass
     transfer rates and  contact between contaminants and
     microorganisms capable of  degrading those contaminants.
     Aerobic treatment in  batch mode has been the most common
     mode of operation. This process can be performed in contained
     reactors (3) or in lined lagoons [7, p. 9].  In the latter case,
     synthetic liners have to be placed in existing unlined lagoons,
     complicating the operation and maintenance of the system. In
     this case, excavation  of a new lagoon or above-ground tank
     reactors should be considered. Aeration is provided by floating
     or submerged aerators or by compressors and spargers.  Mixing
     is provided by aeration alone or by aeration and mechanical
     mixing.  Nutrients and neutralizing agents are supplied to
     relieve any chemical  limitations  to microbial activity.   Other
     materials, such as surfactants, dispersants, and compounds
     supporting growth and inducing degradation of contaminant
     compounds, can be used to improve the materials' handling
     characteristics  or  increase substrate  availability for
     degradation [8, p. 5). Microorganisms may be added initially to
     seed the bioreactor or added continuously to maintain the
     correct concentration of biomass.  The residence time in the
     bioreactor varies  with the soil or  sludge  matrix;  physical/
     chemical nature of the contaminant, including concentration;
     and  the biodegradability of the  contaminants.   Once
     biodegradation of the contaminants is completed, the treated
     slurry is sent to a separation/dewatering system (4). A clarifier
     for gravity separation, or any standard dewatering equipment,
     can be used to separate the solid phase and the aqueous phase
     of the slurry.
     Site Requirements
    
         Slurry  biodegradation  tank reactors are generally
     transported by trailer.  Therefore, adequate access roads are
     required to get the unit to the site. Commercial units require a
     setup area of 0.5-1 acre per million gallons of reactor volume.
    
         Standard 440V three-phase electrical service is required.
     Compressed air must be available. Water needs at the site can
     be high  if the waste matrix must be made into slurry form.
     Contaminated soils or other waste materials are hazardous and
     their handling requires that a site safety plan be developed to
     provide for personnel protection and special handling measures.
    
         Climate can influence site requirements by necessitating
     covers over  tanks to protect against heavy rainfall  or cold for
     long residence times.
    
         Large quantities of wastewater that results from dewatering
     the slurried soil or that is released from a sludge may need to be
     stored prior to discharge to allow time for  analytical tests to
     verify that the standard for the site has been met.  A place to
     discharge this wastewater must be available.
    
        Onsite  analytical equipment for conducting  dissolved
     oxygen, ammonia, phosphorus, pH, and microbial activity are
     needed  for process control.   High-performance liquid
     chromatographic and/or gas chromatographic equipment  is
     desirable for monitoring organic biodegradation.
     Process Residuals
    
        There are three main waste streams generated in the slurry
     biodegradation system: the treated solids (sludge or soil), the
     process water, and possible air emissions.  The  solids are
     dewatered and may be further treated if they still contain
     organic contaminants.  If the solids are contaminated with
     inorganics and/or heavy metals, they can be stabilized before
     disposal.  The process water can be  treated in  an onsite
     treatment system prior to discharge, or some of it (as high as 90
     percent by weight of solids) is usually recycled to the front end
     of the system for slurrying. Air emissions are possible during
     operation of the system (e.g., benzene, toluene, xylene [BTX]
     compounds); hence, depending on the waste characteristics,
     air pollution control, such as activated carbon, may be necessary
     [4, p. 29].
    Performance Data
    
        Performance results on slurry biodegradation systems are
    provided based on the information supplied by various vendors.
    The quality assurance for these results has not been evaluated.
    In most of the performances, the cleanup criteria were based on
    the requirements  of the client;  therefore, the data do  not
    necessarily reflect the maximum degree of treatment possible.
    
        Remediation Technologies, Inc.'s (ReTeC)  full-scale slurry
    biodegradation system (using a lined lagoon) was used to treat
    wood preserving sludges (K0001) at a site in  Sweetwater,
    Tennessee, and met the closure criteria for treatment of these
    sludges. The system achieved greater than 99 percent removal
    efficiency and over 99 percent reduction in volume attained for
    PCP and polynuclear aromatic hydrocarbons (PAHs) (Table 4
    and Table  5).
    Engineering Bulletin: Slurry Biodegradation Treatment
                                                          7-26
    

    -------
      Waste
    Preparation
        0)
                                                    Figure 1
                                          Slurry Biodegrodotion Process
    I
    Isoil _
    
    Water
    ^
    ^
    Nutrients/
    Additives
    
    i
    Mixing Tank
    (2)
    Slurry ^
    Oxygen
    
    i
    
    i
    Bio Reactors
    (3)
    
    Slurry ^
    
    Emissions
    Control
    \
    Dewatering
    (4)
    te-
    ft-
    
                                                                                                     Treated
                                                                                                    Emissions
                                                                                                    Water
                                                                                          Solids
    
                                                                                          Oversized
                                                                                           Rejects
                                                    Table 3
                              Characteristics Limiting the Slurry Blodegradation Process
    CHARACTERISTICS LIMITING
    THE PROCESS FEASIBILITY
    Variable waste composition
    Nonuniform particle size
    Water solubility
    Biodegradability
    Temperature outside 1 5-35°C
    range
    Nutrient deficiency
    Oxygen deficiency
    Insufficient Mixing
    pH outside 4.5 - 8.8 range
    Microbial population
    Water and air emissions
    discharges
    Presence of elevated, dissolved
    levels of:
    • Heavy metals
    • Highly chlorinated organics
    • Some pesticides, herbicides
    • Inorganic salts
    REASONS FOR POTENTIAL IMPACT
    Inconsistent biodegradation caused by
    variation in biological activity
    Minimize the contact with microorganisms
    Contaminants with low solubility are
    harder to biodegrade
    Low rate of destruction inhibits process
    Less microbial activity outside this range
    Lack of adequate nutrients for biological
    activity
    Lack of oxygen is rate limiting
    Inadequate microbes/solids/organics
    contact
    Inhibition of biological activity
    Insufficient population results in low
    biodegradation rates
    Potential environmental and/or health
    impacts
    Can be highly toxic to microorganisms
    ACTIONS TO MINIMIZE IMPACTS
    Dilution of waste stream. Increase mixing
    Physical separation
    Addition of surfactants or other emulsifiers
    Addition of microbial culture capable of
    degrading particularly difficult compounds or
    longer residence time
    Temperature monitoring and adjustments
    Nutrient monitoring; adjustment of the
    carbon/nitrogen/phosphorus ratio
    Oxygen monitoring and adjustments
    Optimize mixing characteristics
    Sludge pH monitoring. Addition of acidic or
    alkaline compounds
    Culture test, addition of culture strains
    Post-treatment processes (e.g., air scrubbing,
    carbon filtration)
    Pretreatment processes to reduce the
    concentration of toxic compounds in the
    constituents in the reactor to nontoxic range
                                                   Engineering Bulletin: Slurry Biodegradation Treatment
    
                                                         7-27
    

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                                                          Table 4
                           Results Showing Reduction in Concentration for Wood Preserving Wastes
    Initital Concentration
    Compounds
    Phenol
    Pentachlorophenol
    Naphthalene
    Phenanthrene & Anthracene
    Fluorantnene
    Carbazole
    Solids
    (mg/kg)
    14.6
    687
    3,670
    30,700
    5,470
    1,490
    Slurry
    (mg/kg)
    1.4
    64
    343
    2,870
    511
    139
    *May be due to combined effect of Volatilization and Biodegradation.
    Final Concentration
    Solids
    (mg/kg)
    0.7
    12.3
    23
    200
    67
    4.9
    Slurry
    (mg/kg)
    <0.1
    0.8
    1.6
    13.7
    4.6
    0.3
    Percent Removal
    Solids
    (mg/kg)
    95.2*
    98.2
    99.3*
    99.3
    98.8
    99.7
    Slurry
    (mg/kg)
    92.8
    92.8
    99.5*
    99.5
    99.1
    99.8
    [Source: ReTec, 50,000 gal. reactor]
                                                          Table 5
                              Results Showing Reduction in Volume For Wood Preserving Wastes
    Compounds
    Phenol
    Pentachlorophenol
    Naphthalene
    Phenanthrene & Anthracene
    Fluoranthene
    Carbazole
    Before Treatment
    (Total pounds)
    368
    141,650
    1 79,830
    2,018,060
    1 90,440
    114,260
    *May be due to combined effect of Volatilization and Biodegradation.
    After Treatment
    (Total pounds)
    41.4
    193.0
    36.6
    303.1
    341.7
    93.7
    [Source: ReTec, 50,000 gal. reactor]
    Percent Volume
    Reduction
    88.8*
    99.9
    99.9*
    99.9
    99.8
    99.9
    
        Data for one of these pilot-scale field demonstrations,
    which treated 72,000 gallons of oil refinery sludges, are shown
    in Figure 2 [8, p. 24].  In this study, the degradation of PAHs was
    relatively rapid and  varied depending on the nature of the
    waste and  loading  rate.  The  losses of carcinogenic PAHs
    (principally the 5- and 6-ring PAHs) ranged  from  30  to 80
    percent over 2 months while virtually all of the noncarcinogenic
    PAHs were degraded. The total PAH reduction ranged from 70
    to 95 percent with a reactor residence time of 60 days.
    
        ECOVA's full-scale, mobile slurry  biodegradation unit was
    used to treat more than 750 cubic yards of soil contaminated
    with 2,4-Dichlorophenoxy acetic acid (2,4-D) and 4-chloro-2-
    methyl-phenoxyacetic acid (MCPA) and other pesticides such
    as alachlor, trifluralin, and carbofuran.  To reduce 2,4-D and
    MCPA levels from 800 ppm in soil and 400 ppm in slurry to less
    than 20 ppm for both in 13  days, 26,000-gallon bioreactors
    capable of handling approximately 60 cubic yards of soil were
    used. The residuals of the process were further treated through
    land application [3, p. 4].  Field application of the slurry bio-
    degradation  system designed  by ECOVA to treat PCP-
    contaminated wastes has resulted in a 99-percent decrease in
    PCP concentrations (both in solid and aqueous phase) over a
    period of 24 days [3, p. 5].
    
        Performance data for Environmental Remediation, Inc.
    (ERI) is available for the  treatment of American Petroleum
    Institute (API) separator sludge and wood-processing wastes.
    Two lagoons containing an olefin sludge from an API separator
    were treated. In one lagoon, containing, 4,000 cubic yards of
    sludge, a degradation time of 21 days was required to achieve
    68 percent volume reduction and 62 percent mass oil and
    grease reduction at an operating temperature of 18°C. In the
    second lagoon, containing 2,590  cubic yards  of  sludge, a
    treatment time of 61 days was required to achieve 61 percent
    sludge reduction and 87.3 percent mass oil and grease reduction
    at an operating temperature of 14°C [1, p. 367].
    
        At another site, the total wood-preserving constituents
    were reduced to  less than 50 ppm. Each batch process was
    Engineering Bulletin: Slurry Biodegradation Treatment
    
                                                          7-28
    

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                                                          Figure 2
                                          Pilot Scale Results on Oil Refinery Sludges
                               1500 _,
                         IS1
    
                         C3
                               1000 -
                                500 -
                                              Non Care. PAH
    
                                              Care. PAH
                                    f=\
                              Days:
    
                              % Solids:
    
                              Sample:
               0   60
    
                10%
    Lagoon
    Sludge
                                                                                       [Source: ReTeC]
    Pit
    Sludge
    carried out with a residence  time of 28 days in 24-foot-
    diameter, 20-foot-height tank reactors handling 40 cubic yards
    per batch [6]. The mean concentrations of K001 constituents
    before treatment and the corresponding concentrations after
    treatment, for both settled solids and supernatant, are provided
    in Table 6 [2, p. 11]. The supernatant was discharged to a local,
    publicly owned wastewater treatment works.
    
        RCRA Land  Disposal  Restrictions (LDRs) that  require
    treatment of wastes to best demonstrated available technology
    (BOAT)  levels  prior  to land  disposal may sometimes be
    determined to be  applicable  or relevant and  appropriate
    requirements (ARARs) for CERCLA response actions.  Slurry
    biodegradation  can  produce  a treated  waste that meets
    treatment levels set by BOAT, but may not reach these treatment
    levels in all cases.  The ability to meet required treatment levels
    is dependent upon the specific  waste constituents and the
    waste matrix. In cases where slurry biodegradaton does not
    meet these levels, it still may, in certain situations, be selected
    for use at the site if a treatability variance establishing alternative
    treatment levels  is obtained.   EPA has made the treatability
    variance process available in order to ensure that LDRs do not
    unnecessarily restrict the  use  of alternative and innovative
    treatment technologies.  Treatability variances may be
    justified for handling complex soil and debris  matrices.  The
                            following guides describe when and how to seek a treatability
                            variance  for soil and  debris:   Superfund  LDR Guide #6A,
                            "Obtaining a Soil and Debris Treatability Variance for Remedial
                            Actions," (OSWER Directive 9347.3-06FS) [10] and Superfund
                            LDR  Guide #6B,  "Obtaining a Soil and  Debris Treatability
                            Variance for Removal Actions" (OSWER Directive 9347.3-07FS)
                            [9],  Another approach could be to use other treatment
                            techniques in series with slurry biodegradation to obtain desired
                            treatment levels.
                            Technology Status
    
                                Biotrol, Inc. has a pilot-scale slurry bioreactor that consists
                            of a feed storage tank, a reactor tank, and a dewatering system
                            for the treated slurry.  It was designed to treat the fine-particle
                            slurry from its soil-washing system.   Biotrol's process was
                            included in the SITE program demonstration of its soil-washing
                            system at the MacCillis and Cibbs wood-preserving site in New
                            Brighton, Minnesota, during September and October of 1989.
                            Performance data from the SITE demonstration are not currently
                            available; the Demonstration and Applications Analysis Report
                            is scheduled to be published in late! 990.
                                                         Engineering Bulletin: Slurry Biodegradation Treatment
                                                           7-29
    

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                                                           Tab* 6
                                          Results of Wood Preserving Waste Treatment
    Wood Preserving Waste
    Constituents
    2-Chlorophenol
    Phenol
    2,4-Dimethylphenol
    2,4,6-Trichlorophenol
    p-Chloro-m-cresol
    Tetrachlorophenol
    2,4-Dinitrophenol
    Pentachlorophenol
    Naphthalene
    Acenaphthylene
    Phenanthrene + Anthracene
    Fluoranthene
    Chrysene + Benz(a)anthracene
    Benzo(b)fluoranthene
    Benzo(a)pyrene
    lndeno(1,2,3-cd)pyrene +
    Dibenz(a,h)anthracene
    Carbazole
    Before treatment
    In Soil
    (mg/kg)
    1.89
    3.91
    7.73
    6.99
    118.62
    11.07
    4.77
    420.59
    1078.55
    998.80
    6832.07
    1543.06
    519.32
    519.32
    82.96
    
    84.88
    135.40
    After Treatment
    In Settled Soil
    (mg/kg)
    <0.01
    <0.01
    <0.01
    <0.01
    <0.01
    <0.02
    <0.03
    3.1
    <0.01
    1.4
    3.8
    4.9
    1.4
    <0.03
    0.1
    
    0.5
    <0.05
    In Supernatant
    (mg/L)
    <0.01
    <0.01
    <0.01
    <0.01
    <0.01
    <0.02
    <0.03
    <0.01
    0.04
    1.60
    3.00
    16.00
    8.20
    4.50
    2.50
    
    1.70
    1.70
        [Source: Environmental Solutions, Inc.]
        ECOVA Corporation  has  a full-scale mobile slurry
    biodegradation system. This system was demonstrated in the
    field on soils contaminated with pesticides and PCP.  ECOVA
    has developed an innovative treatment approach that utilizes
    contaminated ground water on site as the make up water to
    prepare the slurry for the bioreactor.
    
        ERI has developed a full-scale slurry biodegradation system.
    ERI's slurry biodegradation system was used to reduce sludge
    volumes and oil and grease content in two wastewater treatment
    lagoons at a major refinery outside of Houston, Texas, and to
    treat 3,000 cubic yards of wood-preserving waste (creosote-
    K001) over a total cleanup time of 18 months.
    
        Environmental Solutions, Inc. reportedly has a full-scale
    slurry biodegradation system, with a treatment capacity of up
    to 100,000 cubic yards, that has been used to treat petroleum
    and hydrocarbon sludges.
    
        CroundwaterTechnology, Inc. reportedly has a full-scale
    slurry biodegradation system, which employs flotation, reactor,
    and clarifier/sedimentation tanks in series,  that has been used
    to treat soils contaminated with  heavy oils, PAHs, and light
    organics.
    
        ReTeC's full-scale slurry biodegradation system was used
    in two major  projects:  Valdosta,  Georgia, and Sweetwater,
    Tennessee.  Both projects involved closure of RCRA-regulated
    surface impoundments containing  soils and sludges
    contaminated with creosote constituents and PCP. Each project
    used in-ground, lined slurry-phase bioreactor cells operating at
    100 cubic yards per week. Residues were chemically stabilized
    andfurthertreated by tillage. For final closure, the impoundment
    areas and slurry-phase cells were capped with clay and a heavy-
    duty asphalt paving [5]. ReTeC has also performed several pilot-
    scale field demonstrations with  their system on oil refinery
    sludges (RCRA K048-51).
    
        One vendor estimates the cost of full-scale operation to be
    $80 to SI 50 per cubic yard of soil or sludge, depending on the
    initial concentration and treatment volume. The cost to use
    slurry biodegradation will vary depending upon the need for
    additional pre- and post-treatment and the addition of air
    emission control equipment.
    EPA Contact
    
        Technology-specific  questions regarding slurry  bio-
    degradation may be directed to:
    
        Dr. Ronald Lewis
        U.S. EPA Risk Reduction Engineering Laboratory
        26 West Martin Luther King Drive
        Cincinnati, Ohio 45268
        Telephone:  FTS 684-7856 or (513) 569-7856.
    Engineering Bulletin: Slurry Biodegradation Treatment
                                                          7-30
    

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                                                   REFERENCES
    1.    Christiansen, ]., T. Koenig, and C. Lucas. Topic 3:            7.
         Liquid/Solids Contact Case Study. In: Proceedings
         from the Superfund Conference, Environmental
         Remediation, Inc., Washington, D.C., 1989. pp. 365-
         374-                                                   8.
    2.    Christiansen,)., B. Irwin, E. Titcomb, and S. Morris.
         Protocol Development For The Biological Remediation
         of A Wood-Treating Site. In: Proceedings from the 1 st
         International Conference on Physicochemical and
         Biological Detoxification and Biological Detoxification         g
         of Hazardous Wastes, Atlantic City, New Jersey, 1989.
    3.    ECOVA Corporation.  Company Project Description,
         (no date).
    4.    Kabrick, R., D. Sherman, M. Coover, and R. Loehr.            10.
         September 1989, Biological Treatment of Petroleum
         Refinery Sludges. Presented at the Third International
         Conference on New Frontiers for Hazardous Waste
         Management, Remediation Technologies, Inc.,               1 -j
         Pittsburgh, Pennsylvania, 1989.
    5.    ReTeC Corporation. Closure of Creosote and
         Pentachlorophenol Impoundments.  Company               -j 2
         Literature, (no date).
    6.    Richards, D. j.  Remedy Selection at Superfund Sites on
         Analysis of Bioremediation, 1989 AAAS/EPA
         Environmental Science and Engineering Fellow, 1989.
                         Stroo, H. F., Remediation Technologies Inc. Biological
                         Treatment of Petroleum Sludges in Liquid/Solid
                         Contact Reactors.  Environmental and Waste
                         Management World 3 (9): 9-12, 1989.
                         Stroo, H.F., ]. Smith, M. Torpy, M. Coover, and R.
                         Kabrick. Bioremediation of Hydrocarbon-
                         Contaminated/Solids Using Liquid/Solids Contact
                         Reactors, Company Report, Remediation Technologies,
                         Inc., (no date), 27 pp.
                         Superfund LDR Guide #6B: Obtaining a Soil and Debris
                         Treatability Variance for Removal Actions. OSWER
                         Directive 9347.3-07FS, U.S. Environmental Protection
                         Agency, 1989.
                         Superfund LDR Guide #6A: Obtaining a Soil and
                         Debris Treatability Variance for Remedial Actions.
                         OSWER Directive 9347.3-06FS, U.S. Environmental
                         Protection Agency, 1989.
                         Innovative Technology:  Slurry-Phase Biodegradation.
                         OSWER Directive 9200.5-252FS, U.S. Environmental
                         Protection Agency, 1989.
                         Technology Screening Guide for Treatment of CERCLA
                         Soils and Sludges.  EPA/540/2-88/004, U.S.
                         Environmental Protection Agency, 1988.
      United States
      Environmental Protection
      Agency
    Center for Environmental Research
    Information
    Cincinnati, OH 45268
         BULK RATE
    POSTAGE & FEES PAID
            EPA
      PERMIT No. G-35
     Official Business
     Penalty for Private Use $300
                                                         7-31
    

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    7.15          EXHIBIT 9 - GLOSSARY OF BIOREMEDIATION TERMINOLOGY
    
    
    Aerobic Respiration
           Energy-yielding metabolism in which the terminal electron acceptor for substrate
           oxidation is molecular oxygen.
    
    Adaptation/Acclimation
           An increase in the biodegradation rate of a chemical after exposure of the microbial
           community to the chemical for some period of time.
    
    Anaerobic Respiration
           Energy-yielding metabolism in which the terminal electron acceptor form substrate
           oxidation is an inorganic compound other than molecular oxygen, such as sulfate or
           nitrate.
    
    Biodegradation
           The biological transformation of an organic chemical to another without regard to extent.
           Biologists, however, usually use biodegradation as a synonym for mineralization.
    
    Biogenic Compounds
           Naturally occurring compounds that have been present for millions of years.  Thus, there
           are organisms somewhere in the biosphere that can initiate their biodegradation.
    
    Bioremediation
           The manipulation of living systems to bring about desired chemical and physical changes
           in a confined and regulated environment.
    
    Cometabolism/Cooxidation
           The transformation of a non-growth substrate that could  not occur without the presence
           of a growth, substrate or another transformable compound.
    
    Constitutive Enzymes
           Enzyme(s) always produced by a cell regardless of the nature of the medium.  An inducer
           compound is not required for the enzyme(s) formation.
    
    Fermentation
           Energy-yielding metabolism that  involves a sequence of oxidation-reduction reactions in
           which both the substrate (primary electron donor) and the terminal electron acceptor are
           organic compounds.
    
    Gratuitous Metabolism
           Reaction involving enzymes having high substrate specificity with respect to catalytic
           function but low specificity with  respect to substrate binding.
    
    Inducible Enzymes
           Enzymes produced by a cell in  response to a specific compound that is referred to as the
           inducer.
    
    Mineralization
           The conversion of organic chemicals  to carbon dioxide and/or methane, water, and
           various inorganic forms.
    
    Non-Growth Substrate
           A substrate that will not support cell division. There must be a growth substrate present
           in order for the transformation to occur.
    
    
                                              7-32
    

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    7.15          EXHIBIT 9 - GLOSSARY OF BIOREMEDIATION TERMINOLOGY (continued)
    
    
    Persistent Compound
           A chemical that fails to undergo biodegradation under a specified set of conditions.  A
           chemical may be inherently biodegradable yet persistent in the environment.
    
    Recalcitrant/Refractory Compound
           A compound that has an inherent resistance to any degree of biodegradation.
    
    Substrate
           The material or substance on which an enzyme reacts.
    
    Xenobiotic Compounds
           Compounds that are "foreign" to the biosphere, having been present for only an instant on
           the evolutionary timescale.  May or may not be biodegradable.
    Source:    Bioremediation of Hazardous Waste Sites Workshop - Speaker Slide Copies and
              Supporting Information, CERI-89-11
    
    
                                              7-33
    

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      7.16
    EXHIBIT 10 - SITE TECHNOLOGY PROFILE - INTERNATIONAL
     ENVIRONMENTAL TECHNOLOGY/YWC MIDWEST
     Technology Profile
                       DEMONSTRATION
                           PROGRAM
             INTERNATIONAL ENVIRONMENTAL TECHNOLOGY/
                                      YWC MID WEST
                        (Geolock/Bio-Drain Treatment Platform)
    TECHNOLOGY DESCRIPTION:
    
    The Geolock/Bio-drain treatment platform is
    a bioremediation system that is installed in the
    soil or waste matrix.  The technology can be
    adapted to the soil characteristics of the area,
    the  concentration  of  contaminants,  and
    geologic formations. The system is composed
    of an in-situ tank, an application system, and
    a bottom water recovery system.
    
    The tank, an in-situ structure, is composed of
    high density polyethylene (HOPE), sometimes
    in  conjunction  with  a slurry wall.   An
    underlying  permeable waterbearing  zone
    facilitates the creation of ingradient water
    flow  conditions.   The  tank  defines  the
    treatment area,  minimizes intrusion of off-
    site clean water, minimizes the  potential for
    release of bacterial cultures to the aquifer, and
    keeps  contaminant  concentration  levels  that
    facilitate treatment.  The ingradient conditions
    also facilitate reverse leaching or soil washing.
                                          Geolock
                                    The application system, called Bio-drain,  is
                                    installed  within  the  treatment area.   Bio-
                                    drain delivers bacterial cultures, nutrients, and
                                    oxygen or any other proprietary  chemical to
                                    the soil profile. Bio-drain acts to aerate the
                                    soil column  and  any standing water.   This
                                    creates an aerobic environment in the air pore
                                    spaces of the soil. The cost of installation is
                                    low, and Bio-drains can  be placed in very
                                    dense configurations.
    
                                    Existing wells or new wells are used to  create
                                    the water  recovery system for  removal of
                                    contaminated   soil  washing   water.    By
                                    controlling the water levels within the tank,
                                    reverse leaching  or soil  washing  and  the
                                    volume of off-site clean water entering the
                                    system can be controlled and minimized. This
                                    minimizes the potential for off-migration. It
                                    also creates a condition such that the direction
                                    of   existing   contaminants  and  bacterial
                                    degradation products is toward the surface.
                                  Figure 1.  Geolock / Biodrain
      Source: The Superfund Innovative Technology Evaluation Program: Technology Profiles
             EPA/540/5-90/006 (1990).
                                           7-34
    

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    Conventional biological treatment is  limited
    by the depth of soil aeration, the need for
    physical stripping, or the need to relocate the
    contaminated media  to  an  aboveground
    treatment system.  The Geolock/Bio-drain
    treatment   platform   surpasses   these
    limitations as well as reduces  or eliminates
    the health risks associated with  excavation
    and  air releases  from  other  treatment
    technologies.
    WASTE APPLICABILITY:
    
    All   types   and   concentrations   of
    biodegradable  contaminants can be treated
    by this system.  Through direct degradation
    or  cometabolism,   microorganisms   can
    degrade most  organic substances.   Only a
    limited  number of  compounds,  such  as
    Arochlor 1254  and 1260 (PCBs) are resistant
    to biodegradation. Also, this technology may
    not be applicable to constituents resistent to
    degradation, including 1,4 dioxane and high
    concentrations  of heavy metals.
    
    Extremely dense clays may be difficult to
    treat with this  technology.  Rock shelves or
    boulders may render installation impossible.
    STATUS:
    
    The technology was accepted into the SITE
    Demonstration Program in  August 1990.
    Preparation of the Quality Assurance Project
    Plan and site selection have begun.
    FOR FURTHER INFORMATION:
    
    EPA Project Manager
    Randy Parker
    U.S. EPA
    Risk Reduction Engineering Laboratory
    26 West Martin Luther King Drive
    Cincinnati, Ohio 45268
    513-569-7271
    FTS:  684-7271
    
    Technology Developer Contact
    Lynn D. Sherman
    YWC Midwest and IET
    6490 Promler Avenue, N.W.
    North Canton, Ohio  44720
    216-499-8181
                                            7-35
    

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       7.17
    EXHIBIT 11  - SITE TECHNOLOGY PROFILE - ECOVA CORPORATION
     Technology Profile
                      DEMONSTRATION
                          PROGRAM
                                  ECOVA CORPORATION
                                (In-Situ Biological Treatment)
     TECHNOLOGY DESCRIPTION:
    
     Ecova   Corporation's   bioremediation
     technology   is   designed   to   biodegrade
     chlorinated  and  non-chlorinated  organic
     contaminants by employing aerobic bacteria
     that use  the contaminants as their carbon
     source.  This proposed technology has two
     configurations:  in-situ biotreatment of soil
     and water; and on-site bioreactor treatment
     of contaminated ground water.
    
     A   primary   advantage  of  in-situ
     bioremediation  is  that  contaminants  in
     subsurface soils and ground water can be
     treated without excavating overlying  soil.
     The  technology  uses  special  strains of
     cultured  bacteria and  naturally  occurring
     microorganisms in on-site soils and ground
     water.    Since  the  treatment  process  is
     aerobic, oxygen and soluble forms of mineral
     nutrients  must be introduced throughout the
     saturated  zone.   The end  products of the
     aerobic biodegradation are carbon dioxide,
     water, and bacterial biomass.
                                   Contaminated  ground  water  can  also  be
                                   recovered and  treated in  an aboveground
                                   bioreactor.  Nutrients and oxygen can then be
                                   added to some or all of the treated water, and
                                   the water can be recycled  through the soils as
                                   part of the in-situ soil treatment.
    
                                   Because site-specific environments influence
                                   biological treatment, all  chemical, physical,
                                   and microbiological factors are designed into
                                   the treatment system.  Subsurface  soil and
                                   groundwater samples collected from a site are
                                   analyzed  for baseline  parameters,  such as
                                   volatile organics,  metals, pH, total organic
                                   carbon,   types   and   quantities  of
                                   microorganisms, and nutrients.  A treatability
                                   study,  which  includes   flask  and column
                                   studies,  determines the  effects  of process
                                   parameters on system performance.  The flask
                                   studies test  biodegradation under optimum
                                   conditions, and  the column studies test the
                                   three  field  applications:   (1)  soil flushing;
                                   (2) in-situ  biotreatment,   and  (3)  in-situ
                                   biotreatment using  ground water treated in  a
                                   bioreactor.
                            Microbes, nutrients
                             oxygen source
                                Biological
                                Treatment
                                       Clarlfler
                                                       Bioreactor
                   Makeup
                   water
                            Recharge
                                                  Recovery
                            Figure 1.  In situ bioreclamation processes.
    Source: The Superfund Innovative Technology Evaluation Program:  Technology Profiles,
           EPA/540/5-90/006 (1990).
                                            7-36
    

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    WASTE APPLICABILITY:
    
    Biological processes can be applied to water,
    soil, sludge, sediment, and  other types of
    materials   contaminated   with   organic
    constituents. The system must be engineered
    to  maintain   parameters   such  as   pH,
    temperature, and  dissolved  oxygen  (if the
    process is aerobic), within ranges conducive
    to  the desired microbial  activity.    The
    technology  is  applicable   to  chlorinated
    solvents  and  non-chlorinated   organic
    compounds.
    STATUS:
    
    Ecova's  planned  demonstration  of  this
    technology on a wide range of toxic organic
    compounds  at  the Goose Farm  Superfund
    Site  in  Plumstead  Township,  NJ  was
    cancelled after the completion of treatability
    studies in April 1990. The treatability study
    report will be published by January 1991.
    
    Although the demonstration was cancelled at
    the Goose Farm site, the technology may be
    demonstrated at another hazardous waste site
    in the future.
    FOR FURTHER INFORMATION:
    
    EPA Project Manager
    Naomi P. Barkley
    U.S. EPA
    Risk Reduction Engineering Laboratory
    26 West Martin Luther King Drive
    Cincinnati, Ohio  45268
    513-569-7854
    FTS:  684-7854
    
    Technology Developer Contact
    Michael Nelson
    Ecova Corporation
    3820 159th Avenue Northeast
    Redmond, Washington 98052
    206-883-1900
                                            7-37
    

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     7.18
    EXHIBIT 12 - SITE TECHNOLOGY PROFILE - IN-SITU FIXATION
    COMPANY
    Technology Profile
                      DEMONSTRATION
                           PROGRAM
                           LN-SITU FIXATION COMPANY
                            (In-Situ Bioremediation Process)
     TECHNOLOGY DESCRIPTION:
    
     This  process  increases  the quality  and
     acceleration  of   biodegradation    in
     contaminated  soils.     The   specialized
     equipment   system  injects  site-specific
     microorganism mixtures,  along with  the
     required nutrients, and homogeneously mixes
     them into the contami-nated soils.   The
     injection  and  mixing  process  effectively
     breaks down fluid and soil strata barriers and
     eliminates pockets of contaminated soil that
     would otherwise remain untreated.
    
     The process  uses a twin, S-foot diameter
     auger  system powered and moved by a
     standard  backhoe.  The auger drills  into
     contaminated  soil   with   hollow   shafts,
     allowing  the  microorganism  and nutrient
     mixture to pass.
    
     The allocation of the  microorganisms  and
     nutrients  occurs  during  the initial auger
     action.   The auger flights break the soil
     loose, allowing mixing  blades to thoroughly
     blend  the   microorganism  and  nutrient
     mixture with the soil.   This occurs in an
     overlapping manner, to ensure the complete
     treatment of  all  contaminated  soil.   The
     mixing action is continued as the augers are
     withdrawn. Treatment depth can exceed 100
     feet.
    
     Water, nutrients, and bacteria are added to
     the contaminant area as needed.
                                    WASTE APPLICABILITY:
    
                                    The process is applicable to contaminated soils.
                                    Different contaminants may have different
                                    degrees of success.  High concentrations of
                                    heavy  metals,  non-biodegradable   toxic
                                    organics,   alkaline   conditions,   or  acid
                                    conditions   could   interfere   with   the
                                    degradation process. Although volatiles may
                                    volatilize  during remediation, it  has  been
                                    minimized by adding a hood around the auger
                                    assembly and treating the captured gases.
    
                                    The Dual Auger System was also developed
                                    for the treatment of inorganic contaminated.
                                    soils, by injecting reagent slurry into the soil
                                    to solidify/stabilize contaminated waste.
                                    STATUS:
    
                                    This technology was accepted  into the SITE
                                    Program in June  1990.   EPA is  currently
                                    locating a site to demonstrate this project.
    Source: The Superfund Innovative Technology Evaluation Program:  Technology Profiles,
           EPA/540/5-90/006 (1990).
                                            7-38
    

    -------
        FOR FURTHER INFORMATION:
    
        EPA Project Manager.
        Edward J. Opatken
        U.S. EPA
        Risk Reduction Engineering Laboratory
        26 West Martin Luther King Drive
        Cincinnati, Ohio 45268
        513-569-7855
        FT&  684-7855
    
        Technology Developer Contact:
        Richard P. Murray
        In-Situ Fixation Company
        P.O. Box 516
        Chandler, Arizona 85244-0516
        602-821-0409
    7-39
    

    -------
      7.19
    EXHIBIT 13 - SITE TECHNOLOGY PROFILE - REMEDIATION
    TECHNOLOGIES, INC.
    Technology Profile
                      DEMONSTRATION
                          PROGRAM
                       REMEDIATION TECHNOLOGIES, INC.
                                   [formerly Motec, Inc.]
                             (Liquid/Solid Contact Digestion)
    TECHNOLOGY DESCRIPTION:
    
    This  process   uses  liquid-solid  contact
    digestion  (LSCD)  to  biodegrade  organic
    wastes.   Organic  materials and  water are
    placed in a high energy environment,  in
    which the organic  constituents are  then
    biodegraded by acclimated microorganisms.
    
    The system consists of two or three portable
    tank digesters or lagoons (Figure 1): (1) a
    primary  contact  or  mixing   tank; (2) a
    primary digestion tank; and (3) a polishing
    tank.  Treatment time may be ten days  or
    more,   depending  on   the   type   and
    concentration of the contaminants  and the
    temperature in the tanks.
                                  In the primary contact tank,  water is mixed
                                  with influent sludge or soil.  The  mixing
                                  process  is designed to  achieve a  20  to  25
                                  percent   solids  concentration.     Water  is
                                  obtained either from the contaminated source
                                  or  a fresh  water source.    Emulsifying
                                  chemicals may be added, and pH is adjusted
                                  to increase the solubility of the organic phase.
                                  After water is added,  the batch mixture is
                                  transferred  to the  primary digestion tank,
                                  where acclimated seed bacteria are added, and
                                  aerobic biological oxidation is initiated. Most
                                  of the biological oxidation occurs during this
                                  phase.
    
                                  When the biodegradation  reactions decrease
                                  significantly, the batch mixture is transferred
                                      . FLOATING AEHATOM
                                      O« MIlIR (OPTIONAL)
                           Figure I. Mobile pilot-icilt liquid tolldt contact Imimeiil syilcn.
    Source: The Superfund Innovative Technology Evaluation Program:  Technology Profiles,
          EPA/540/5-90/006 (1990).
                                           7-40
    

    -------
    to the polishing tank for final treatment.
    Once the  pH  has  been readjusted in the
    polishing cell,  co-metabolites and nutrients
    are added  to  maintain and  enhance the
    biomass.  In this phase, organic constituents
    are degraded to target concentration levels.
    Because the system runs on a negative water
    balance,  water is added  throughout the
    process. Once  target levels are reached, the
    supernatant  from  the polishing  tank  is
    recycled to the primary contact tank, and
    biological sludge is treated in prepared bed
    solid phase bioreactors.
    WASTE APPLICABILITY:
    
    The  technology is suitable  for  treating
    halogenated  and  nonhalogenated  organic
    compounds,  including some pesticides and
    herbicides. LSCD has been demonstrated on
    liquids, sludges, and soils with high organic
    concentrations.
    STATUS:
    
    The developer is seeking private party co-
    funding for a 3 to 4 month demonstration on
    petroleum or coal tar derived wastes.
    FOR FURTHER INFORMATION:
    
    EPA Project Manager.
    Ronald Lewis
    U.S. EPA
    Risk Reduction Engineering Laboratory
    26 West Martin Luther King Drive
    Cincinnati, Ohio 45268
    513-569-7856
    FTS:  684-7856
    
    Technology Developer Contact
    Randy Kabrick
    Remediation Technologies, Inc.
    1301 West 25th Street, Suite 406
    Austin, TX 78759
    512-477-8661
                                           7-41
    

    -------
     7.20
                 EXHIBIT 14 - SITE TECHNOLOGY PROFILE - ZIMPRO/PASSAVANT, INC.
    Technology Profile
    DEMONSTRATION
        PROGRAM
                              ZIMPRO/PASSAVANT INC.
                              (PACT/Wet Air Oxidation)
    TECHNOLOGY DESCRIPTION:
    
    Zimpro/Passavant  Inc.  has  developed  a
    treatment   system   that  combines   two
    technologies: the PACT* treatment system
    and wet air oxidation (WAO). The PACT*
    system  uses powdered activated  carbon
    (PAC) combined with conventional biological
    treatment (e.g., an activated sludge system)
    to treat liquid waste containing toxic organic
    contaminants.   The  WAO technology  can
    regenerate the PAC for reuse in the PACT*
    system.  The system is mobile and can treat
    from 2,500 to 10,000 gallons of wastewater
    per day. Larger stationary systems, treating
    up to 53 million gallons per day, are already
    in operation.
                 In the PACT* system, organic contaminants
                 are  removed  through  biodegradation  and
                 adsorption. Living microorganisms (biomass)
                 in the activated sludge system are contained in
                 liquid  suspension  in an aerated basin.  This
                 biomass removes biodegradable toxic organic
                 compounds from  the liquid waste.  PAC is
                 added to enhance this biological treatment by
                 adsorbing toxic organic compounds.
    
                 The degree  of treatment  achieved by the
                 PACT* system depends on the influent waste
                 characteristics  and  the  system's  operating
                 parameters.  Important waste characteristics
                 include bipdegradability, adsorbability,  and
                 concentrations of toxic organic compounds and
                 inorganic compounds, such as heavy metals.
                                           POLYMER
                                                            EFFLUENT
                                                     ASH TO DISPOSAL
                                  Figure I PACT system wiih WAO.
     Source: The Superfund Innovative Technology Evaluation Program: Technology Profiles
           EPA/540/5-90/006 (1990).
    
                                           7-42
    

    -------
    Major operating parameters include carbon
    dose, hydraulic retention time of the aeration
    basin, solids retention time of the biomass-
    carbon mixture, and  biomass concentration
    in the system.  Liquid  wastes fed into  the
    PACT*   system  should  have  sufficient
    nutrients (nitrogen and phosphorous) and
    biodegradable  compounds to support  the
    growth  of  active  biomass in the  aeration
    basin. The temperature of the waste should
    be in the range of 40° F to 100° F, and  the
    influent pH in the range  of 6 to 9.  Solids
    retention times affect both the concentration
    and type of biomass in the system; these vary
    from 2 days to SO days.  Hydraulic retention
    times  affect the degree of biodegradation
    achieved and typically range from 2 hours to
    24 hours for relatively dilute wastes, such as
    contaminated groundwater,  up  to several
    days for concentrated wastes and  leachate.
    Carbon doses vary widely, depending on  the
    biodegradability   and   adsorptive
    characteristics  of  the contaminants in  the
    waste.  Higher PAC concentrations improve
    the settleability of the PAC-biomass mixture
    and reduce air stripping of volatile organic
    contaminants.
    
    Excess solids (PAC with adsorbed organics,
    biomass, and  inert  solids)  are  removed
    periodically from the system through  the
    system's clarifier (settling  tank) or thickener
    (see Figure 1).   These  excess  solids  are
    routed   to  the WAO  system  reactor   to
    regenerate  the spent  PAC  and   destroy
    organics   remaining   in  the    biomass.
    Temperatures  and  pressures in  the  WAO
    system will be about 480° F and 800 to 850
    pounds per square inch, respectively.  After
    treatment  in   the  WAO  system,   the
    regenerated PAC may be separated  from  the
    ash formed from destruction of the biomass
    and returned to the aeration basin for reuse.
    WASTE APPLICABILITY:
    
    This technology  is applicable to  municipal
    and industrial wastewaters, as well as ground
    water and  leachates  containing  hazardous
    organic  pollutants.    According  to   the
    developer, the PACT* system has
    successfully treated a  variety of  industrial
    wastewaters,  including   chemical  plant
    wastewaters,  dye  production  wastewaters,
    pharmaceutical    wastewaters,   refinery
    wastewaters, and synthetic fuels wastewaters,
    in addition to contaminated groundwater and
    mixed industrial/municipal wastewater.
    
    In general, PACT* system can  treat liquid
    wastes containing wide  ranges of biochemical
    oxygen demand (BOD)  — 10  to 30,000 parts
    per million (ppm) —  and chemical oxygen
    demand (COD) —  20 to 60,000 ppm.  Toxic
    volatile organic compounds can be treated up
    to the level where they interfere with biomass
    growth, about 1,000 ppm. The developer's
    treatability studies have shown that the PACT
    system    can  reduce    the   organics   in
    contaminated  groundwater  from  several
    hundred ppm to  below  detection limits (parts
    per billion range).
    STATUS:
    
    Plans are underway to secure wastewater for
    the system to treat.  Several sites have been
    studied for suitability.
    FOR FURTHER INFORMATION:
    
    EPA Project Manager
    John F. Martin
    U.S. EPA
    Risk Reduction Engineering Laboratory
    26 West Martin  Luther King Drive
    Cincinnati, Ohio 45268
    513-569-7758
    FTS:  684-7758
    
    Technology Developer Contact:
    William M. Copa
    Zimpro/Passavant Inc.
    301 West Military Road
    Rothschild, Wisconsin 54474
    715-359-7211
    November 1990
                                            7-43
    

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     7.21
    EXHIBIT 15 - SITE TECHNOLOGY PROFILE - BIOVERSAL USA, INC.
    Technology Profile
                      DEMONSTRATION
                           PROGRAM
                                 BIOVERSAL USA, INC.
                            (Biogenesis Soil Cleaning Process)
    TECHNOLOGY DESCRIPTION:
    
    The BioGenesis™ process uses a specialized
    truck, gravity and cyclone separators, and a
    bioreactor to wash contaminated soil.  The
    wash rate for hydrocarbon contamination up
    to 5,000  ppm is 25  tons per hour; higher
    contamination levels  require slower wash
    rates.  After the  first wash, 100 to 200 ppm
    of the residuals remain.  A second wash
    reduces residuals even further. A single wash
    removes  95%   to  99% of hydrocarbon
    concentrations up  to  16,000 ppm.  One or
    two   additional    washes  are   used  for
    concentrations up to 45,000 ppm.
    
    The residuals biodegrade at  an  accelerated
    rate due to contact with BioVersal™, a light,
    alkaline, organic formula used to reduce oil
    contamination.   Figure 1 shows the soil-
    cleaning procedure.   Twenty-five  tons of
    contaminated soil are dumped into a mixture
    of water  and BioVersal.   For 15 to 30
    minutes,  aeration  equipment agitates  the
                              on.
                             rot
                          BKUMATWH
      COKTAMDUTn
         •OIL
       CZCAK
        SOU.
                Waaher Unit
                  OUT
                 WATO
                                   mixture, washing the soil and encapsulating oil
                                   molecules with BioVersal™.
    
                                   After  washing,  the  liquid  products  are
                                   recycled or treated, and the soil is dumped out
                                   of the soil washer.  The bioreactor processes
                                   the minimal amount of wastewater produced
                                   by the  soil  washer.   Recovered oils  are
                                   recycled.
    
                                   PCBs, metals, and other hazardous materials
                                   are extracted  in  the same  manner,  then
                                   processed using specific treatment methods.
                                   All equipment is mobile, and treatment is
                                   normally on-site.
                                   WASTE APPLICABILITY:
    
                                   This   technology   is  applicable  to  soil
                                   contaminated  with  volatile and  nonvolatile
                                   hydrocarbons.   These include  asphaltenes,
                                   PCBs,   polycylic   hydrocarbons,   and
                                   epichlorhydrin.
                                         00.
                                        rot
                                      BKUMATION
    Oil/Water
    Separator
                                          OILY
                                        l» Nnt L«*4
                                                 I
                                                   BioReactor
                 AB
                               •UVmil
                               GUANO
                                                                   CUAK
                                 VATIB
                                                 U*V«n>l     AH
                        Figure I.  Biogenesis Soil Cleaning Process
                          Innovative Technology Evaluation
                      -90/006(1990).
                                           7-44
    

    -------
    STATUS:
    
    This technology is used commercially  in
    Europe. The technology was accepted into
    the SITE Demonstration  Program in July
    1990.
    FOR FURTHER INFORMATION:
    
    EPA Project Manager:
    Diana Guzman
    U.S. EPA
    Risk Reduction Engineering Laboratory
    26 West Martin Luther King Drive
    Cincinnati, Ohio 45268
    513-569-7819
    FTS: 684-7819
    
    Technology Developer Contact:
    Mohsen C. Amiran
    BioVersal USA, Inc.
    1703 Victoria Drive
    Suite 303
    Mount Prospect, IL 60056
    708-228-7316
    
    or
    
    Charles L. Wilde
    10626 Beechnut Court
    Fairfax Station, Virginia 22039
    (703) 250-3442
    November 1990
                                          7-45
    

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          7.22
    EXHIBIT 16 - SITE TECHNOLOGY PROFILE - BIOTROL, INC.
          Technology Profile
                      DEMONSTRATION
                           PROGRAM
                                          BIOTROL, INC
                              (Biological Aqueous Treatment System)
          TECHNOLOGY DESCRIPTION:
    
          The  Biotrol  Aqueous  Treatment  System
          (BATS) is a patented  biological treatment
          system  that   is  effective  for  treating
          contaminated  ground  water and  process
          water.   The  system   uses  an amended
          microbial  mixture;  that  is, a  microbial
          population indigenous to the wastewater to
          which a specific  microorganism has been
          added.   This  system  removes  the  target
          contaminants   as  well  as  the  naturally
          occurring background organics.
                                   Figure  1  is a  schematic  of the  BATS.
                                   Contaminated water enters a mix tank, where
                                   the pH is adjusted and inorganic nutrients are
                                   added. If necessary, the water is heated to an
                                   optimum temperature, using a heat exchanger
                                   to minimize  energy costs.  The water then
                                   flows to the  reactor, where the contaminants
                                   are biodegraded.
    
                                   The  microorganisms,  which  perform  the
                                   degradation,  are immobilized in a  three-cell,
                                   submerged, fixed-film bioreactor.  Each cell
                                   is filled with  a highly porous packing material
                                                           >NH,UENT
                  HEAT
                  EXCHANGER
                                                                             BLOWERS
                                           PUMP
                                 Figure 1.  Bioreactor Processing System.
    Source: The Superfund Innovative Technology Evaluation Program:  Technology Profiles
          EPA/540/5-90/006 (1990).
                                                7-46
    

    -------
    to which the microbes adhere. For aerobic
    conditions, air is supplied by fine  bubble
    membrane diffusers mounted at the bottom
    of each cell.   The system may also   run
    under anaerobic conditions.
    
    As the water flows through the bioreactor,
    the contaminants are  degraded  to  carbon
    dioxide,  water, and  chloride  ion.   The
    resulting effluent may be  discharged to  a
    Publicly Owned Treatment Works (POTW) or
    may be  reused on-site.   In some  cases,
    discharge  with a NPDES  permit may be
    possible.
    WASTE APPLICABILITY:
    
    This technology is  applicable  to a wide
    variety  of  wastewaters,  including ground
    water,  lagoons,   and   process  water.
    Contaminants amenable to treatment include
    pentachlorophenol,   creosote components,
    gasoline and fuel oil components, chlorinated
    hydrocarbons, phenolics, and solvents.  Other
    potential target waste  streams include coal
    tar  residues and organic pesticides.   The
    technology may also be effective for treating
    certain inorganic compounds such as nitrates;
    however, this application has not yet been
    demonstrated.   The  system does  not treat
    metals.
    STATUS:
    
    In 1986-87, Biotrol performed a successful
    9-month pilot field test of BATS at a wood
    preserving facility.  Since that time, several
    other   demonstrations   and  commercial
    installations have been completed. The SITE
    demonstration of the BATS technology took
    place from July 24  to September 1, 1989 at
    the MacGillis and Gibbs Superfund  site in
    New Brighton, Minnesota.  The system was
    operated continuously for six weeks at three
    different flow rates.
    DEMONSTRATION RESULTS:
    
    Results from  the demonstration showed that
    PCP was reduced to less than 1 ppm at all flow
    rates.  Removal percentage was as high as 97%
    at the lowest  flow rate.  The  Technology
    Evaluation  Report will  be available   in
    December 1990.
    FOR FURTHER INFORMATION:
    
    EPA Project Manager
    Mary K, Stinson
    U.S. EPA
    Risk Reduction Engineering Laboratory
    Woodbridge Avenue
    Edison, New Jersey  08837
    908-321-6683
    FTS:  340-6683
    
    Technology Developer Contact:
    John K. Sheldon
    BioTrol, Inc.
    11 Peavey Road
    Chaska, Minnesota SS318
    612-448-2515
    November 1990
                                            7-47
    

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                         7.23
    EXHIBIT 17 - BIOREMEDIATION IN THE FIELD
              vvEPA
           U.S. Environmental
            Protection Agency
    
      Office of Solid Waste and
          Emergency Response
    
            Office of Research
             and Development
                                                             EPA/540/2-91/007  No.2   March 1991
                      IN THE FIELD
                      An information update on applying bioremediation to site clean-up.
    UPDATE ON THE BIOREMEDIATION
    FIELD INITIATIVE
    
    The BioremediationFieldlnitiativewas established to provide
    EPA and State Project Managers, consulting engineers and
    industry with timely information regarding new developments
    in the application of bioremediation at hazardous waste sites.
    In addition, the initiative will fully evaluate theperformance of
    selected full-scale field applications, provide technical assis-
    tance to RPMs and OSCs, and develop a treatability database
    to be available through the Alternative Treatment Technolo-
    gies Information Center (ATTIC.)
    
    The initiative is currently moving ahead with it's field evalu-
    ations of bioremediation. The Allied Signal site in St. Joseph,
    Michigan is on board for an evaluation of methylotropic tech-
    nology on a TCE and vinyl chloride plume. Dr. John Wilson,
    developer of the methylotropic method, is the EPA project
    officer  for the evaluation. In this Issue he provides an update
    on technology being developed for the site. To date, a tentative
    work plan has been established and treatability studies are
    being carried out. The pilot scale demonstration is expected to
    be run this summer.
    
    A second site, located in Libby, MT has been identified as a
    good candidate for an evaluation of land treatment, which is
    currently being implemented on creosote and PCP contami-
    nated soils, and of an in situ bioremediation  system with an
    above ground fixed film bioreactor for contaminated ground
    water, which is now in design. Dr. Huling, the project officer
    at EPA's Ada laboratory, provides an update on the Libby site
    and the proposed evaluation on page 2. Both of these sites are
    being remediated by the responsible parties who cooperated
    with  EPA to initiate the evaluations.
    One other site that was under consideration for the field evalu-
    ation is being screened further prior to inclusion. Technical
    issues with the operating system at the site may not allow an
    evaluation this summer. Therefore, other sites are now being
    looked at as potential alternates. The UST site under consid-
    eration for the field evaluation is  currently seeking funding for
    the project.
    
    Another ongoing activity being promoted under the Field Ini-
    tiative is providing technical assistance on bioremediation
    projects to EPA Regions through theEPA laboratories. See the
    article on page 16 for more news on the Superfund Technical
    Support Program. For further information on the Field Initia-
    tive, write to the contact listed on page 15.
                       RSKERL Proposes New Injection Well
                       Design for In situ Biotreatment of a TCE
                       Plume, St. Joseph, Michigan
    
                       The Western Region Hazardous Substance Research Center
                       (WRHSRC) at Stanford  University recently conducted a
                       treatability study utilizing in situ bioremediation to remediate
                       vinyl chloride and trichloroethylene contamination in ground
                       water at the Allied Signal/Bendix site, St. Joe, Michigan.
                       Researchers had previously discovered that by mixing ground
                       water and a solution of oxygen  and  methane, the  vinyl
                       chloride and trichloroethylene contamination could be biode-
                       graded in soil cores. However, in the field, simply injecting
                       solutions of oxygen and methane  into  an aquifer does not
                       adequately mix them with the contaminated ground water.
                       To remedy this problem, the WRHSRC has developed an in
                                                         situ  treatment unit
                                                         that enhances this
                                                         mixing.   The unit
                                                         consists of a well with
                                                         two screens, a pump,
                                                         and mixing appara-
                                                         tus. One well screen
                                                         is located at the bot-
                                                         tom of the aquifer and
                                                         the other  is at the
                                                         water table.   Con-
                                                         taminated  ground
                                                         water is drawn into
                                                         the well through the
                                                         lower screen, where
                                                         it  is amended  with
                                                         oxygen and methane,
                                                         then pumped  back
                                                         into  the  aquifer
    New Injection Wei! Design for
        In situ Bioremediation
                       through the water table screen. The pumping rate in the
                       treatment unit can be  adjusted to recirculate the  plume
                       through the treatment unit as many times as is necessary to
                       meet cleanup standards. The WRHSRC is currently writing
                       a computer code to describe the  three dimensional flow
                       through the zone of influence of the treatment unit.  This new
                       computer code will be used to design these treatment systems
                       and identify optimum well placements and pumping rates.
                       For further information, contact John Wilson at FTS: 743-
                       2259 or 405-332-8800.
                                                  Printed on Recycled Paper
    
    
                                                  7-48
    

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    Page 2
                          BIOREMEDIATION in the Field
    Field Evaluation of Bioremediation
    Techniques Proposed at the Libby,
    Montana Superfund Site
    
    EPA's Robert S. Kerr Environmental Research Laboratory is
    currently negotiating with the potentially responsible party at
    the Libby, Montana Superfund Site to implement a bioreme-
    diation performance evaluation for the field initiative. The
    site is contaminated with creosote, pentachlorophenol and a
    fuel carrier as a result of previous wood preserving  opera-
    tions.
    Bioremediation  activities consist of land  treatment  of the
    contaminated soil, in-situ treatment of both the ground water
    and aquifer material,  and above-ground bioremediation of
    the ground water. The proposed performance evaluation will
    address each of these bioremediation activities.
    The objectives of the performance evaluation will be to
    identify both the merits and limitations of bioremediation
    from a qualitative and a quantitative perspective. The project
    will involve the compilation, assimilation, and interpretation
    of monitoring data from the various biological processes. In
    addition, the monitoring of laboratory and field activites will
    further develop our understanding of the processes and strate-
    gies  that contribute to successful  site remediation using
    biological techniques. For further information contact Scott
    Ruling atFTS: 743-2313 or 405-332-2313.
    Kerr Laboratory Announces Field
    Validation of Three Bioremediation
    Techniques for Fuel Spills
    
    During field evaluations of hazardous waste remediation
    technologies, several removal processes often operate on the
    contaminants of interest at the same time.  This makes it
    difficult to determine which aspect of the treatment actually
    produced the observed remediation. It also makes it difficult
    to extrapolate remediation results to other sites and scenarios.
    A contaminated site in Park City, Kansas will provide staff at
    EPA's Robert S. Kerr Environmental Laboratory with an
    opportunity to divide an area affected by a homogeneous fuel
    spill into discrete blocks, and apply different experimental
    bioremediation treatments to each block. The objective of
    this study will be to evaluate the relative efficacy of (1) BTEX
    fermentation alone, (2) BTEX denitrification alone, and (3)
    BTEX denitrification supplemented with oxygen, for reme-
    diation of subsurface contamination with refined petroleum
    hydrocarbons.
    The study site is  in the  flood plain of the Arkansas River,
    where there is 15  to 20 feet of clay overlying a sand aquifer.
    The water table is near the contact between the sand and the
    clay.  Bedrock is at 45 to 50 feet
    
    Sometime in the 1970s, a buried pipe line at an oil refinery in
    Park City, Kansas, started leaking a variety of refined petro-
    leum products and petroleum feedstocks below the clay into
    the water table aquifer. The spill contaminated ground water
    near Park City's municipal well #6 in February 1980.  To
    intercept the flow of hydrocarbons from the pipeline to the
    well, two trenches were excavated to the water table for free
    product recovery. As a means of disposal, the petroleum in
    the trenches was occasionally set afire. The west trench was
    backfilled in August of 1982, the east trench was filled in
    August of 1984. In 1990, the PRP installed approximately
    500 shallow injection wells that are screened just above the
    water table. These wells were constructed on a 20-foot grid
    spacing and covered the entire area affected by the spill.
    
    The spill area will be subdivided into three plots of about an
    acre each. Water from the municipal supply  well will be
    pumped and recirculated to the aquifer through the injection
    wells at the rate of 400 gpm. Each of the three experimental
    plots will receive approximately 130 gpm. At a pumping rate
    of 400 gpm, it is estimated that the water will require an
    average of 6.4 days to recirculate. To maintain the demon-
    stration in a cone of depression, water will also be pumped
    from a second nearby well. To act as a tracer, and to enable
    estimation of the volume of water in the recirculation loop,
    the recirculated water will be amended with sodium bromide
    at 50 mg/1 of bromide.
    
    The recirculated water will also be amended with ammonium
    nitrate at 5 mg/1 as nitrogen. The water distributed to two of
    the plots will be amended with potassium nitrate at 10 mg/1 as
    nitrogen. The water distributed to one of the plots will be
    amended with 5 mg/1 oxygen.
    
    Microcosm studies will be conducted on two on-going reme-
    diations. Cores will be acquired before and after application
    of nitrate and analyzed by GC/MSto determine the extent of
    remediation. The field evaluation will be conducted this year
    and is being performed under a Cooperative Research Dem-
    onstration Agreement with Coastal Remediation Company.
    For further information contact John Wilson at FTS:  743-
    2259 or 405-332-8800.
    
    
    Biodegradation of Trichloroethylene by a
    Genetically Modified Bacterium
      New
       From the Lab
                      One of the most prevalent environmental
                      pollutants is the industrial degreaser,
                      trichloroethylene (TCE). Its persistence
                      is largely due to two fundamental prop-
                      erties:  1) It has a relatively high water
                      solubility, and therefore fails to adhere
                      to soil and aquifer materials, allowing
                      rapid vertical  movement into aquifer
    systems; and 2) Despite breaking down quickly in sunlight, it
    is very persistent below the ground because it is not subject to
    chemical or biological transformations of any significant
    extent
    
    Once TCE is released to the environment, naturally occurring
    bacteria do not readily degrade it unless it is present with
                                                       7-49
    

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     BIOREMEMAJION In the Field
                                                                                     Page 3
     other, more easily degraded organics such as toluene or
     phenol. This problem has been the subject of research at the
     EPA research laboratory in Gulf Breeze, Florida for the last
     several years. Researchers there now report the development
     of a strain of Pseudomonas cepacia called G4 5223 Phel, that
     produces a TCE degrading enzyme without the need for the
     presence of other organics.  All evidence indicates that the
     new strain is very stable and capable of functioning under a
     wide variety of environmental conditions.  Unlike cloned
     bacterial genes currently available for TCE degradation, G4
     5223 Phel is not a product of recombinant genetics  and
     therefore  is not subject  to regulations imposed on such
     constructed bacteria.
     Gulf Breeze researchers envision this bacteria being used
     during in situ aquifer restoration, in bioreactors for contami-
     nated materials and in biofilters for atmospheric treatment of
     chloroethylenes. In addition to TCE, G4 5223 Phel can also
     degrade a wide spectrum of other pollutants including vinyl
     chloride, DCE, benzene, phenol, toluene, xylenes, and cre-
     sols. Research is already underway at Gulf Breeze to extend
     this list of "edible pollutants."  For  further information,
     contact Malcolm Shields at FTS: 228-9333 or 904-934-9333.
     New Biological Assay Techniques to be
     Tested During SITE Demonstration at
     American Creosote
       New
        From the Lab
    This spring, the SITE Demonstration
    Program will work with Southern Bio
    Products, Inc. to conduct a pilot-scale
    technology demonstration using biore-
    mediation to treat creosote and PCP-
    contaminated soil and ground water at
    the American Creosote Works Super-
    fund site  in Pensacola, Florida.  The
    multi-phase biotreatment strategy under evaluation has com-
    bined physical separation technologies and microorganisms
    which utilize recalcitrant creosote constituents as a primary
    energy source for growth.
    
    In conjunction with the normal chemical analysis used during
    a SITE demonstration, various biological analyses will be
    performed through a cooperative research and development
    agreement with the U.S. EPA Environmental Research Labo-
    ratory at Gulf Breeze, Florida. Embryonic inland silversides
    (Menidia beryllina) have recently been identified as sensitive
    and accurate indicators for PCP and creosote-related pollut-
    ants in an aqueous phase.  During this demonstration, these
    organisms will be used to generate toxicity, teratogenicity
    and mutagenicity data on  starting and end point samples.
    Other biological assays will include  acute toxicity tests
    conducted with a saltwater invertebrate, Mysids.  Lastly,
    selected samples will be tested using EPA established meth-
    ods to estimate the potential for chronic effects to fish and
    invertebrates.
    
    The results of this pilot  scale  study  could facilitate the
    development of standard test protocols that use site-specific
    animals in routine testing procedures.  For further informa-
    tion, contact James Mueller at FTS: 228-9282 or 904-934-
    9282.
    
    EPA's Technical Support Project Provides
    Assistance to Eighteen Superfund Sites
    Utilizing Bioremediation  in FY '90
    
    Since the inception of EPA's Technical Support Project (TSP)
    in 1988, over 50% (47) of the requests for technical assistance
    received regarding innovative technologies have addressed
    bioremediation.  At least 7 evaluations of bioremediation
    sites and 11 work plan and design reviews have been com-
    pleted or are currently in progress.
    
    The Superfund Technical Support Project (TSP) is a joint
    effort of OSWER's Technology Innovation Office and the
    Office of Research and Development (ORD). The goal of the
    program is to provide technical assistance to Remedial Proj-
    ect Managers (RPMs) and On-Scene Coordinators (OSCs).
    The network of technical resources established by the pro-
    gram has to date undertaken 750 technical assistance proj-
    ects, delivered technical workshops regarding specific Super-
    fund sites and prepared 20 issue  papers regarding critical
    areas of remedial technology development. The program has
    given ORD a better understanding of Regional technical
    needs and enabled the Regions to more consistently evaluate
    treatment options. (For more detailed information regarding
    services provided by the TSP, see page 16.)
    
    One example of  a TSP project undertaken by one of the
    centers, the Ground-Water Fate and Transport Technical
    Support Center in Ada, Oklahoma,  is oversight support of the
    PRP and technical assistance at the  Baxter/IP/Rosenberg
    Superfund site in Region IX. The site involves the contami-
    nation of both soil and groundwater with PAHs, PCP, TCP,
    and metals. Initial site data indicated that high metal concen-
    trations might inhibit bioremediation, so the center is assist-
    ing the Region in conducting tests to determine if the mi-
    crobes can acclimate to the presence of metals.
                                                        Vitrification
                                         Low Temperature   3.4%
                                            Desorpoon
                                          FY'88-90 Innovative Technology Assistance
                                                             Requests
                                                         7-50
    

    -------
     Page 4
                          BIOREMEDIATION /n the Field
     Over 140 Bioremediation Projects
     Identified
    
     The Bioremediation Field Initiative has identified over 140
     sites across the country where bioremediation projects are
     being considered, planned, or implemented.  Table 1 lists
     these sites by EPA Region and provides some basic informa-
     tion concerning each of them.  This table has been updated
     since the last issue of Bioremediation in the Field and more
     than half of the site entries contain new information. Those
     site entries with new information have been marked with a
     star. As part of this update, six sites have been dropped from
     the original table  published in November 1990 because
     bioremediation is no longer being considered as a remedial
     alternative. About a dozen new sites have been added to the
     table; these are noted by the symbol, A after the site name.
     Analysis of the data reported by the site managers indicates
     that soil alone, and soil and ground water together, are the
     media most often treated with bioremediation. Ground water
     only, sediments, and surface water are also treated using
     bioremediation, but much less often.
    The data also indicate that in-situ treatment is the most
    commonly employed bioremediation technique, followed by
    land treatment and treatment in a bioreactor. Many sites are
    or will employ more than one technique.  Over 80 sites
    employing in-situ treatment have been identified, whereas
    over 60 sites each have chosen land treatment or treatment in
    a bioreactor. Managers at another 40 sites listed on Table 1
    have yet to decide which, if any, biotreatment technology to
    employ.
    
    In the  coming months,  TIO will conduct more detailed
    analyses of the types of contamination identified and  the
    clean-up goals being set for all identified bioremediation
    sites. To accomplish this task, in-depth contaminant informa-
    tion is  needed.  TIO will be sending  an easy-to-complete
    matrix to all participating project managers that will ask for
    specific detailed information. Your cooperation in this proj-
    ect will be appreciated.
         Surface Water
             Sediments
         Ground Water
                 Soil&
         Ground Water
                  Soils
                        *
                                     10     15     20      25    30      35     40     45     50     55
                                                       Number of Sites
                                  Types of Media Treated by Bioremediation
    The Bioremediation Field Initiative is a cooperative effort among the Technology Innovation Office (TIO), Office of Solid Waste and
    Emergency Response (OSWER), and the Office of Technology Transfer and Regulatory Support (OTTRS), the Office of Environmental
    Engineering and Technology Demonstration (OEETD), Office Research and Development (ORD).  Major contributors to the initiative
    include the waste programs in the EPA Regional Offices and the following laboratories in ORD: Ada, OK; Athens, G A; Cincinnati, OH; Gulf
    Breeze, FL; and Research Triangle Park, NC.
                                                          7-5J
    

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    BIOREMEDIATION In the Field
    PageS
                                       TABLE 1
               CERCLA/RCRA/UST SITES CONSIDERING, PLANNING, OR
                OPERATING FULL-SCALE BIOREMEDIATION SYSTEMS
    Rgn
    1
    1
    1
    1
    1
    1
    1
    1
    1
    II
    II
    II
    Sk*/Loc*l«i/lMd
    BakdaMcQuire
    Hobfook, MA
    FundlMd
    Chariot Qeorge
    Landfil*
    Tintboro.MA
    FundlMd
    Chariattown N»vy
    Yard
    BottonNHP
    National Park
    Service
    Batten. MA
    Stale-lead
    •nfofctcnvnt
    General Etartfie4
    PSl»r»)d.MA
    TSCAlMd
    General Ektdrio
    PitttMd.MA
    TSCAlMd
    HamWon Standard*
    Windier (.«**, CT
    RCRAlMd
    Iron Horte Park
    Billarica, MA
    PRPlMd
    Pin* Street Canal
    Burlington, VT
    FundlMd
    Sylveater
    Nashua, NH
    State lead
    •niofcwntnt
    Alcoa
    Mattena,NY
    American Linen*
    Stilwaler. NY
    Enforcement lead
    FAA Technical
    Cantar*
    Atlantic County, NJ
    PRPIud
    Contact/Phona
    Numbar
    Paula
    Ftaimmont
    617-573-5738
    FTS 833-1 738
    Dava Dickerton
    617-573-5735
    FTS 833-1 735
    Stephen
    Carbon
    617-242-5680
    Joan Blake
    202-382-8236
    FTS 382-6236
    Joan Blake
    202-382-6236
    FTS 382-6236
    QlnaSnyder
    617-673-9674
    FTS 833- 1674
    Don McElroy
    617-223-5518
    FTS 833-1518
    ROM GiMand
    617-573-5766
    FTS 833-1766
    Chat Janowtki
    617-573-9623
    FTS 833-1623
    Lite Canon
    212-264-6857
    FTS 264-6657
    Frank Paduto
    NYSDEC
    518-457-2462
    CarlaSlrubl*
    212-264-4595
    FTS 264-4595
    Contamlnanta/Madla
    Paaticidaa (chlordana), dbxin,
    artenic/groundwater
    Ananic, banzana. toluana, athyl
    benzene, xylene,
    tetrahydrofurant/groundwatar,
    laachata, landlil gas
    PAHt from craoaota/udimants
    PCBt/rivar tadimant. «oi»
    PCBt/pond, rKrar Mdimanl
    PCBa, patrelaum
    hydroeartxm«/>ol
    Patrotoum hydrocarbons/toil
    Coal tar. PAHt/toib. >adimant«.
    groundwatar
    Phanote, MEK,
    acatona/groundwatar
    PCBt/nvar sadimantl
    BTX, PAH.. VOC«, VTX/«oi
    JP-4 i*l lual/ioil. groundwatar.
    floating product
    Stetua
    Undar oorwtruction; ROD tignad
    9/30/86
    ROD tqnad 9/88; initial traatatxlty
    •ludiat oompMad MO
    Planning pilot projact lor FY 91
    Undarooing pilot traatabillty
    (tudiaa
    Undargoing pilot traatability
    dudiaa
    Planning to conduct traatability
    Mudia*!nFY81
    Traatability tludiat compMad
    1989; ROD tignad 9/1 5/88;
    currantly in datign ttaga
    Conducting banoh-tcala ta»M,
    Fall 1990; tupplamantal RUFS in
    prograH
    Traatabillty > tudy complata;
    conducting ramadiation linca July
    1986
    Currantly in Rl ttaga
    Bagan land traalmant oparatont
    9/90
    ROD iignad V2V89; eurrantly in
    RO ttaga
    Ckan-up Lawala
    Stata of MA drinking walar
    •landardt
    MCU and ritk-batad lavalt lor
    groundwatar and laachata
    Not yat aatabCthad
    2ppmparpaak
    2ppmparpaak
    Not yat aatabfenad
    60-80% removal or IMS than
    1 pom PAH; 50-60% ramoval of
    PHCt; nC,^priltana ratio <
    or .0.2
    Not yat aatablihad
    Stata of NH drinking water
    ttandardt
    Not yat attaMshad
    
    NJ toil action lavalt; NJ MCU
    tor drinking water
    Treat manl
    Bioraactor
    Bioraactor (activatad
    tludge) lor groundwatar
    and laachate treatment
    Intitu
    E»«ltu
    Intitu
    Intitu
    Excavate to treatment cell-
    turface treatment
    Soil: in titu
    Groundwaler: fbied film
    reactor
    Bioraactor (activated
    tludge wth extended air)
    Undetermined
    Land treatment
    __. .
    and off-tHa cement kin
    inanaratioo; groundwatar
    extraction and addition of
    nutrienta for tubtaquent
    rainjectioo and in titu
    biodagradalion of VCCt;
    toi venting; ute of oft-gat
    treatment unit for oft-gat
    Irom tol venting.
    eontitting of aithar a
    catalytic incinerator for
    eornbuttbn of VOCt to
    carbon dioxide and water,
    or activatad carbon
    adiorptnri of VOCa
    A Indicataa a new »«e in the Tabla.
    * Informaten regarding (hit I la hat been updated for the inua.
    Shading dapiott a non-CERCLA tile.
                                          7-52
    

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    Page 6
    BIOREMEDIATION //? the Field
               CERCLA/RCRA/UST SITES CONSIDERING, PLANNING, OR
                OPERATING FULL-SCALE BIOREMEDIATION SYSTEMS
    Rgn
    II
    II
    II
    II
    II
    II
    It
    II
    11
    III
    III
    ill
    III
    III
    III
    Srte/Locatlon/Leed
    GEMS Landfil*
    Camden County.
    NJ
    Slat* load
    General Electric*
    State lead
    General Motors*
    Massena,NY
    Enforcement lead
    Knispel
    Construction Sit*
    Horseheads , NY
    Stale lead
    Nascolite*
    Milrvile. NJ
    Federal lead
    Osmose*
    Buffalo. NY
    Statelet
    Renora, Inc.. NJ*
    Reynold* Metals
    Massena. NY
    Syracuse*
    LIST toad
    ARC
    Gainesville. VA
    RCRAIead
    Atlantic Wood*
    Poitimouth. VA
    PRPIead
    Avter Fibers
    Front Royal, VA
    PRPIead
    Drake Chemical
    Lock Haven. PA
    Fund lead
    L.A. Clarke A Son*
    VA
    Enforcement lead
    Leetown Pesticides
    Leetown. WV
    Federal lead
    Contact/Phone
    Number
    Matt Westgate
    212-264-3406
    FTS 264-3406
    Jim Harrington
    NYSDEC
    518-457-3957
    Lisa Canon
    212-264-6857
    FTS 264-6657
    Frank Peduto
    NYSDEC
    518-457-2462
    Farnaz Saghafi
    212-264-4665
    FTS 264-4665
    Jim Harrington
    NYSDEC
    518-457-3957
    Joyce Hamey
    212-264-6313
    FTS 264-631 3
    Liu Canon
    212-264-6857
    FTS 264-6857
    Chris O'Neil
    NYSDEC
    518-457-2462
    Robert Stroud
    215-597-8214
    FTS 597-8214
    Drew Lausch
    215-597-1727
    FTS 597- 1727
    Bonnie Gross
    215-597-9023
    FTS 597-9023
    Roy Schtock
    215-597-0913
    FTS 597-091 3
    Gene Winged
    215-597-0517
    FTS 597-0517
    Andy Palestini
    215-597-1286
    FTS 597-1286
    Contamlnanta/Medla
    Various organic and inorganic
    compounds/groundwater,
    leachate
    PCB»
    PCBs. PAHs, volatiles/soil.
    sludge, sediment, groundwater
    Gasoline, benzene/soil,
    groundwater
    Methylmethacrylat*. volatile*
    and semi-volatile*/toil,
    groundwater
    Creosote, fuel oil/toil
    PAHs, petroleum
    hydrocarbons/sol
    PCBs/river sediments
    Gasoline, fuel oil/sol,
    groundwater
    Chlorobenzenarsol
    PAH* from wood preserving/soil.
    groundwater
    Arsenic, zinc, lead, carbon
    disuffide, hydrosutfide, phenol,
    cadmium/ groundwater
    Pesticide*. DCE/sotl.
    groundwaler
    Creosote/sod
    DDT. Imdane/soil
    Status
    Phase 1 FS underway; Phase II
    construction of remedial action in
    the design phase
    Researeh/treatabJity studies
    Conducting bench-scale studies;
    ROD signed 12/17/90; beginning
    negotiations (or conducting
    treatabilrty studies
    Remediation completed 10/89
    Soil treatabiUty studies conducted
    9/90; ROD scheduled tor 1991;
    treatabilrty studies for ground-
    water underway; ROD signed
    1988
    Land treatment ongoing
    TrealabiMy study complete;
    bioremediation ineffective;
    phase II feasibility study in
    progress
    Currently in Rl stage
    In discussion phase
    Treatabilty study conducted 6/90;
    planning pilot study
    RI/FS ongoing: ROD scheduled for
    6/91
    Treatabilny study planned
    Planning Ueatabil'y study
    Treatabilrty study and RI/FS
    ongoing; ROD signed 1/92
    Treatabilrty study conducted
    Spring 1990; now re-evaluating
    remedial action
    Clean-up Levels
    Not yet established
    Not yet established
    Proposed 10 ppm PCBs (soil), 1
    pom PCBs (sediment)
    Drinking water standards
    NJ interim soil action levels for
    methylmethacrylate: 5 ppm
    (surface soil); 50 ppm (subsurface
    soil); and 350 ppb (groundwater)
    Not yet established
    PAHs 10 ppm; petroleum
    hydrocarbons 1000 pom
    Not yet established
    Groundwater standards;
    proposed draft soil standards
    Unknown
    Not yet established
    .05 mg/l arsenic; 5 mg/1 zinc; .05
    mg/1 lead; .7 mo/I carbon
    disutfide; .3 mg/1 phenol: -01 mg/1
    cadmium (not yet established lor
    hydrosuHide)
    MCLs
    10 ppm carcinogenic PAHs
    300 ppb DDT; not yet established
    for lindane
    Treatment
    Phase 1 • cap; Phase II -
    groundwater ore-treatment
    and disposal at publicly
    owned treatment works
    Possibly bioremediation
    Undetermined - possibly
    biological treatment
    In situ (subsurface)
    Soil: proposed plan calls
    tor extraction/solidification
    or soil washing - residuals
    from soil washing may be
    treated by bioremediation;
    Groundwater: Unde-
    termined, possibly
    bioremediation
    Land treatment
    Undetermined
    Undetermined
    Undetermined
    Bioremediation unit on-line
    since 10/89
    Undetermined
    Biological waste water
    treatment
    BACT
    In situ (surface and
    subsurface)
    Undetermined
    * Indicates a new site m the Table.
    * Information regarding tha site has been updated for tha issue.
    Shading depicts a non-CERCLA site.
                                             7-53
    

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    BIOREMECHATION //i the Field
    Page 7
               CERCLA/RCRA/UST SITES CONSIDERING, PLANNING, OR
                OPERATING FULL-SCALE BIOREMEDIATION SYSTEMS
    Rfln
    III
    HI
    IV
    IV
    IV
    IV
    IV
    IV
    IV
    IV
    IV
    IV
    Sue/Local ton/Lead
    Ordinance Works
    Disposal Areas,
    WV*
    Enforcement load
    ••» hi-.-.. 1 ^«a*
    nnnmore Laos
    Myerstown, PA
    Fund lead
    Alabama, Sta*
    Ooete*
    MoMe, AL
    SCRAN**
    American Creosote
    Works*
    Jackson, TN
    Unitl
    Fund lead
    American Creosote
    Work.*
    Jackson, TN
    UnilS
    Fund lead
    American Creosote
    Works*
    Pen*acola.FL
    Fund lead
    Brown Wood
    Preserving
    Live Oaks, a
    Enforcement lead
    Cape Fear Wood
    Preserving*
    Fayeltevilla, NC
    Fund lead
    Carolawn*
    Carolawn, SC
    Enforoamant laad
    Celanese Ffeers
    Oparation**
    Shefcy. NC
    PRPtaad
    City Industries*
    Wntar Park. FL
    Fund (for
    treatabilrty studies
    andRO);
    E.>l.ii. .•!!>• fit l^mft
    JIIUfUVMWII IVBD
    terRA
    Cdeman-Evan*
    Whia House. FL
    Fund laad
    Cantacl/Phona
    Numbar
    DrawUuich
    215-687-1727
    FTS 587-1727
    Tony
    Dicpolon*)
    215-597-3153
    FTS 597-31 53
    JatonDatby
    404^47-3433
    FTS2S7-3433
    TonyOaAngalo
    404-347-7791
    FTS 257-7791
    TonyDaAngalo
    404-347-7791
    FTS 257-7791
    Natal*
    Ellington
    404.347-2643
    FTS 257-2643
    Martha Barry
    404-347-2643
    FTS 257-2643
    JonBomholm
    404-347-7791
    FTS 257-7791
    AlChany
    404-347-7791
    FTS 257-7791
    KanMallary
    404-347-7791
    FTS 257-7791
    Diana Soott
    404-347-2643
    FTS 257-2643
    Tony Baa!
    404-347-2643
    FTS 257-2643
    Contamlnanta/Madla
    PAHa/tol
    Araanic, anifina. (till bottom
    «M*taa/toil, groundwatar,
    sludgaa (only cartain toils ara
    targeted for bioramadiation)
    POP. oraosota'g'oundwalar. sol
    Craosota/soi
    Craosota/soi
    Craosota. PAHs, POP,
    dioiins/sol
    PAHs. cnosota/soi
    PAHs, ananic, craosota,
    chromum/soil, groundwatar
    VOCi/grourxtwatw
    Ethylana gr/oaL bantana,
    aoatona criromium/groundwatar;
    bis(2-athylha«yOpntriaJala/
    sadimants; chromium, antimony,
    aoatona/so)
    Aoatona. MEK. TCE.
    TCA/groundwatar
    PCP/soil. groundwatar
    Statua
    ROD signad 9/29/B9; currently
    conducting traatabiUy studias;
    unilateral administrative ordar
    issued 6/20/80
    Limilad traatabiMy study
    completed 8^0; ROD signad
    Preparing to do traalabiSty study
    TraatabiMy study planned
    Remedial study planned
    ROD 3/aa - unit 1 ; bench-scale
    treatabiSty study completed 9/90
    by GuH Braaia Labs; ROD 6/91 -
    unit 2
    Last load of contaminated soil in
    surface treatment area (about
    finished): will monitor 3 years;
    treatabil*y study conducted
    Treatabilrry studies ongoing
    Planning bench-scale studies;
    ongoing remedial design
    Bkxaactor on-line since B/2/89;
    treatabilily studias complete
    TrealatxHy study to be nitiatad
    2nd quarter FY 91
    Remedial design underway; pilot
    study planned
    Clean-up Lavala
    45 ppm carcinogenic PAHs
    Arsenic above background levels
    Saturated sois: benzene .002
    mgfeg; tnchloroethene .004
    mg/kg; tatrochloroethene .012
    mgfeg; aniline .002 mg/kg;
    Unsaturated soils: benzene .009
    mg/kg; trichkvoathena .017
    mg/kg; tatrochloroathana .051
    mg/kg; aniline .009 mg/kg
    Not yat established
    100 ppm for 6-8 indicators
    100 ppm tor 64 indicators
    Surface soils: 30ppmPCP;SO
    ppm carcinogenic PAHs; 2.5 ppb
    dioxins
    100 ppm PAHs total
    Soil: 94 mg/kg arsenic. 2.5 mg/kg
    carcinogenic PAHs, 100 mg/kg
    total PAHs;
    Qroundwatar: 10 ug/l
    carcinogenic PAHs, 14,350 ug/l
    noncarctnogenic PAHs;
    Surface water: 1 2 ug/1 arsenic
    Sediments: 94 mg/kg arsenic, 3
    mg/kg total PAHs
    Acetone 710 ug/l; cis-DCE 70
    ug/1; trans-DCE 120 ug/1; TCA
    200 ug/l; TCE 5 ug/l; Pb 5 ug/l
    State of North Carolina MCLs
    Varied, based on Reference Dose
    Limits and Federal and State
    drinking water standards: 700
    ug/l acetone; 200 ug/l MEK; 3.0
    ug/l TCE
    25 ppm sediments, soil; 1 ppm
    groundwater
    Treatment
    Land treatment
    Biological treatment
    (treated soils wil be
    disposed of offsite); clay
    and soil capping
    Undetermined
    Land treatment
    Land treatment
    Soil washing, bioreactor
    Land treatment; surface
    treatment lined with clay
    barms 5^
    Soil washing followed by
    treatment in bioreactor
    
    Sequencing batch reactor
    Pump and treat, air
    stripping, carbon
    adsorbtion, and/or
    biological oxidation
    Bioreactor
    * Indicates a new site in the Table.
    * Information regarding th« tie has been updated for this issue.
    Shading depicts a non-CERCLA site.
                                          7-54
    

    -------
    PageS
    BIOREMEDIATION in the Field
               CERCLA/RCRA/UST SITES CONSIDERING, PLANNING, OR
                OPERATING FULL-SCALE BIOREMEDIATION SYSTEMS
    Rgn
    IV
    IV
    IV
    IV
    IV
    IV
    V
    V
    V
    V
    V
    V
    V
    V
    V
    V
    Sle/Locat ton/Lead
    OuboaeOl
    f*mitliinivimr* Cl *
    MvnQniTwni, PL
    Enforcement lead
    KotpM**
    Florence. SC
    flCfUlaaft*
    UngdaleFacflsy
    wWMfVMMCr Trr
    flCfWIead
    Shawn Farm*
    Shefey County. QA
    Removal toad
    Slalworlhrmtoer*
    Beatrice, At
    RCHAIead
    White HOUM
    Waste*
    Whie HOUM. FL
    Fund lead
    Allied Chemical*
    Ironton.OH
    cnforowTWfrt (••d
    St Joseph, Ml
    PRPIead
    AnMMn GnttnGMt
    HaverhmOH
    HCflAleed
    BaFTrooWne.
    Company*
    ROQn^Swf » UN
    USTlead
    8P OH Company
    Tofed6,OH
    USTlead
    BP Oil Company*
    Una, OH
    Burlington Northern.
    MN*
    Stale/Federal lead
    (SPI* toad)
    Oil/Dow Dump. Ml
    PRPIead
    Cued and Gardner*
    Muskegan. Ml
    FundlMd
    Fitbv-CMo
    UPort.. IN
    LMdpwiding
    (prab^lyPRP)
    Cwittct/Phon*
    Numbw
    Martha B«ny
    404-347-2643
    RS 257-2643
    MhtAmtf
    404-347-79M
    FTS2C7-7803
    ChwlM
    Burraughi
    815-741-3424
    Chuck Ey*
    404-347-3931
    FTS257-3B31
    JnonOarby
    404-347-3433
    RS 257-3433
    TonyBwt
    404-347-2643
    RS 257-2643
    Jim Van d*r
    Moot
    312-353-9309
    RS 353-9309
    John Kuhru
    RS 3534556
    Jfm Strict
    312-8864)992
    PatHtnun
    MPCA
    612-643-3428
    Stapb^R
    Bouehanl
    312486-7569
    OonHallw
    312-353-1248
    AmyBlumb*rg
    312-353-9308
    MPCA contact:
    J.ToddOoak*
    612-296-7710
    LidaTan
    312-886-1842
    Karla Johnson
    312-886-5993
    Brad Bradl^
    312-8864742
    Contvn in will/Media
    Oi. minimal PCP/toJ
    CraoKil*,PCP,ar*Mie
    (CCAVa<)il,groundwaiar
    Craoaota (K001 wa»teX«oi»,
    thidgw
    Dicamba. banzoic acid,
    diehloroaalieydic acid,
    banzonitrila/MJ
    PCP, craoaota/graundwaiar. Mi
    Acid*.PCB.«ia*taol.
    cnjaota/groundwatar
    PNA*/ul
    TCE. DCE. VC/groundwatar
    Cutnana, phanoWtot.
    groundwalaf
    BTEX. gaaofna/aoil,
    groundwatar
    P««rol«uny*ol
    Patrolaum/iol
    Craofota/ioi
    Wood tar. acatic acid, phanol,
    bwuana. PAH.
    Voiatilat. sarn-volatil«. PCB»
    and/or inorganc motah/so).
    groundvnlar
    TCE. DCE. DCA. PCBt/«X.
    groundwatar
    Statua
    Currently in lachnetogy >alaction
    phaaa; traatabiliy ttudy within a
    yaar
    Traatafailly iludy to ba eonduetad
    aariy1881
    Contaminatad aoi and iludg*
    aioaw«t«d; *te capped alter
    biotreatment
    PiM bench-«cala treatability
    ttudiea being reviewad;
    wonVplana in place, comment* to
    go over 30 day*
    Attesting extant of contamination
    Bench Ireatability ttudy completed;
    rek astettment and treatabiliy
    ttudy ongoing
    Conducting pilot ttudiet; ROD
    tigned 12W
    Pilot tcale field demonstration
    scheduled for 3rd quarter 1991 :
    pilot bench-scale lefts have been
    completed oH-site
    Conducing treatabtrrr studies
    Currently candueting
    bioramediatioci
    Discussing bioremedlation a* an
    option; no (tudiea underway
    Discussing bioremediation at an
    option; no studies underway
    Currently conducting
    wore medial ion;
    ROD signed 6M/86
    Conducted treatabiity studies;
    currently in pre-design stage
    Conducting treatabiity studies
    ROD signed 8/7/90; currently in
    design stage
    Clean-up Levels
    Total TPNA SOmgAg: PCPs 50
    moAg; lylane 1 .5 mg/Vg;
    benzene 10 mg/kg; TCE .05
    moAg;DCE.07moAg
    UnUlMHi
    Not ret eetaWshed
    25 ppm tor all contaminants
    Notyetetlablshed
    Not yet established
    1 ppm carcinogenic PAHs
    Not yet eatabished
    4.1 mp/kg phenol
    4.67 mgAg cumene
    Unknown
    Not yvt ottbitlxo
    Not yet established
    Groundwater: 28 mo/1
    carcinogen*; 300 mg/l non-
    ca/cinogens
    Soil: dedication levels
    Not yet eatabished
    Not yet estabished
    5 ppb TCE; 70 ppb DCE; 200
    ppb DCE; drinking water
    standards used where possble
    Treatment
    Land treatment
    Land treatment
    Land treatment using
    bacteria, nutrients, and
    cometabolite
    Undetermined
    Land treatment
    Possible bioremediation
    In situ and prepared pad
    In situ treatment using
    indigenous methanotrophs
    Undetermined
    In-situ pump treatment;
    reinfihration gallery
    Land treatment
    Land treatment
    In situ
    Forced aeration
    Undetermined
    Undetermined
    * Indicates a new sie x the Table.
    * Information regardng the s)e has been updated for the iuu
    Shading depiott a non-CERCLA via.
                                          7-55
    

    -------
    BIOREMEDIATION //I the Field
    Page 9
               CERCLA/RCRA/UST SITES CONSIDERING, PLANNING, OR
                OPERATING FULL-SCALE BIOREMEDIATION SYSTEMS
    Rgn
    V
    V
    V
    V
    V
    V
    V
    V
    V
    V
    V
    V
    V
    V
    V
    S*e,local Ion/Lead
    Galetburg/Koppen).
    It*
    State lead
    Hentchel»*
    Tfavet* City. Ml
    USTlMd
    Jo»lyn MFG. MM*
    State enforcement
    lead
    Manthon Station
    Kenfwood, U!
    USTlMd
    MayvBe Fit*
    Department
    Mayv»*,Mi
    USTbad
    McG.ll> Gbb, MN*
    Fund lead
    Molt American
    Milwaukee. Wl
    Fund lead
    New Lyme. OH
    Fund lead
    Organic Chemical,
    Ml
    Fund bad
    Parke-Dam*
    Holland, Ml
    RCflAlead
    Reilly Tar. IN*
    Enforcement lead
    Beilly Tar «
    Chemical*
    SI. louit Park, MN
    Enforcement lead
    Seymour Recycling,
    IN*
    Unrl 1
    PRPIead
    Seymour Recycling,
    IN
    Unit 2
    PRPIead
    Sheboygan River
    and Harbor*
    Sheboygan, Wl
    PRPIead
    Contact/Phone
    Number
    Brad Bradley
    312486-4742
    BobKettner
    •16-779-9728
    ClrN Twarcaki
    612-286-7827
    Bonnie Whit*
    6KM56-5071
    SueKaeber
    Matte*
    517-771-1731
    Dam/IOwem
    312-886-7088
    Betty Lav*
    312-886-4784
    Darryl Owen*
    312-886-7088
    Tom WilEarm
    312-886-6157
    Dave Pelrov»ki
    312-S86-0987
    Dion Novak
    312-886-4737
    Darryl Owem
    312-886-7089
    MPCA
    contact*:
    Doug Beckwith
    812-296-7301
    Mk. Scon
    612-296-7297
    JeflQore
    312-886-6552
    Jeff Gore
    312-886-6552
    Bonnie Eleder
    312-886-4885
    Contain Inan la/Media
    Phenoti. ehbrophenol. PNA*.
    POP. PAHa/tol
    Ga*oline/*oiL groundwatar
    PAH., PCP. dioiin. furant/.ol
    gatoirMrgroundwatw
    BTEX/toS, gnundwatar
    PAHt, PCP/groundwater
    PAHt/toil. tedimentt
    Ethyf benzena; methylene
    chloride; phthalatei/groundwater
    Oi, TCE. toluane/groundwater
    Benzene, methanol, itopropenol,
    tueVtod, groundwater
    Creotote, PAHt, metali. umi
    VOAs/soil; benzene, ammonia.
    pyndine/groundwater
    Croo»ol«. PAK«/»oJ.
    groundwater
    VC. TCE, DCE/groundwater
    VC. TCE. DCE/iol
    PCB>/tediment
    Stalua
    Conducting pM ttudy;
    ROD tigned 7/89; have
    ml yet itarted deaign pn«t*
    Bienmadiatbn activity ended;
    aom» contamination remain*;
    Agency requeued further cleanup
    MN declaration 1888 - no
    concurrence by EPA; dewgn
    uuflfMeted
    Conducting bioremedialion
    Conducting bioremediation
    Treatability and pilot atudin
    completed 12/89; report due 3/91
    Pilot iludy completed;
    ROD tigned 8^7/90;
    detign ttage Summer 1991
    Conducted plot ttudy 1/88; final
    procett to begin operation by
    11/90
    Waiting for feaiblity ttudy to do
    remediation on TCE and toluene;
    working on additional woritplan for
    oil
    Approaching detign phate
    Rl completed; draft treatatxlity
    ttudy workplan under review
    Planning treatabtlty ttudy
    Preliminary ttaget; ROD tigned
    Wl
    ROD tgned 9/87; bcxemediation
    of toil completed; no treatabilty
    ttudiet conducted
    TreatabiMy and pdot ttudiet to be
    completed end ri 1991;
    Clean-up Level*
    Not yet •etabithed
    Non-detection lev •!§
    1 SO ppm total PAHt; 100 pom
    total PCP
    Background non-detection level*
    or mx-feaud level*
    Qroundwatar: 1 ppb 8ETX
    SoilMOppbBETX
    Not yet ettabithed
    6.1 ppm PAHt
    68 ug/1 ethyl benzene; 473 ug/1
    methylene chloride; 9.2 ug/1
    phthalate
    Not yet ettabi.hed
    Notyetettabiihed
    Not yet ettabCthed
    Not yet ettabkthed
    Drinking water ttandardt
    None ettabit had
    Not yet ettabithed
    Treatment
    Land treatment; in trtu
    with amendment* -
    amendment* and
    application* not yet
    determined
    Air iparging; nutrient
    addition; In tlu pump and
    rainfirlration galery
    Land treatment wing
    irrgalion and addition of
    nutrient* and microbe*
    Fixed film bioreactor with
    tubmerged plate
    Bioremedialion u*ing
    oxygen with no addition of
    nutriantt
    Fixed film aerobic reactor
    Slurry bioreactor uwng
    mdigenout bactena
    Rotating biological
    reactor*
    Undetermined
    Undetermined
    Undetermined
    In trtu (surface and
    tubturface) uting
    additional nutrientt (N, P)
    Propoted bioremediation
    of tetrahydrofurant in
    groundwater
    Biodegredation of heavy
    volatile* hydrocarbon!
    and non-volatile*
    Natural and enhanced
    biodegredation in
    encloted faolrty; in titu
    tludy in capped
    tedimentt
    * Indicales a naw site m the Table.
    * Infofmalon regarding th» *<• haa b«en updated tor th» tuue.
    Shading depicts a non-CERCLA tit*.
                                          7-56
    

    -------
    Page 10
                    BIOREMEDIATION In the Field
               CERCLA/RCRA/UST SITES CONSIDERING, PLANNING, OR
                OPERATING FULL-SCALE BIOREMEDIATION SYSTEMS
    Rgn
    V
    V
    V
    VI
    VI
    VI
    VI
    VI
    VI
    VII
    VII
    VII
    Site/local Ion/Lead
    Sleeping Bee/
    Dunea
    National takeihofe
    USTIaerf
    St. Lou* Riw. MN
    Slate lead
    Union Carbide.
    OH*
    Enforcement
    Atchineon*
    Santa Fa. NM
    Enforcement lead
    French Limited
    Crceby.TX
    Hudton Refining
    Co.*
    Cu.hins.OK
    RCRAIead
    North Cavalcade*
    Houiton, TX
    State lead
    OMInger*
    Darrow, LA
    Fund bad
    Sheridan OiipoMl
    Service.*
    Houtton. TX
    Enforcement lead
    Amoco Refinery*
    Sugv Creek, MO
    RCRAIead
    Contervation
    Chamical
    Kan.M City, MO
    Enforcement lead
    FairfiakJ Coal ft
    Ga.*
    Fairliald. IA
    Enforcement lead
    Number
    PNIDitfJiri
    702-798-2100
    •Jonft Wwdv
    406X02-8600
    DabbiaSiabara
    312-363-9299
    Cliff Twaroeki
    612-296-7627
    Kctnwtn
    Warran
    312-3534756
    SuaanWabatar
    2144SM730
    FTS 2564730
    JudyBtaok
    214-6SS-6735
    FTS2SS473S
    Kaith PhiKpa
    214-655-6480
    FTS256-6480
    0«borah
    GriavraM
    214-655-6715
    FTS 255-6715
    Paul Siamintki
    214-6554710
    FTS25M710
    Ruth Izraai
    2144554735
    FTS 2554735
    FfUnkOoUn
    314-781-3176
    Stava
    Auchtarloni*
    813-551-7778
    FTS 276-7778
    Stava Jonaa
    913451-7755
    FTS 276-7755
    Comact/Phona
    CeMamlnanta/Uadla
    
    
    PAHa/aoito.aadimant*
    VOCa, dioxin, mono-
    groundwatar
    Hydrocaitaona. diaaal/ioa
    Banzana, vinyl chhxida, OCE.
    PCBi/tludeaa, toil, and
    groundwatar
    O8.9raMa.PAHW.ol,
    groundvMlar
    Ca/cinoganiePAHi.
    banzana/groundwatar;
    carcinoganic PAHt/»oi
    Hydracarbont/toi, groundwalar
    Banzana. toluana, athyl
    banzana, phanolt. PCBt/toi,
    tludga, turfaoa walar
    Oi. PAHa, rafinary iludgaa,
    meUlt/tJudgat, id
    Phanok/groundwatar
    Banzana. athyl banzana,
    toluana, «ylana,
    PAHt/groundwatar
    Statua
    Stta invaatigation oompMad
    Planning traatabitty ttudy
    Ramadial Invattigation oomptatad
    Soma traalability aludiaa
    oomptatad; ROD tignad 9723/86:
    planning pilot prejaet; ttaiting in
    tlu6/91
    ROD tignad 3«8; projact undar
    datign
    Oparalk>naJtinoa4V8a
    Dmign ttaga; planning
    bkxamadiation pilot projaot for
    FY91
    Pilot ttudwa oomplatad; ROD
    tignad 9/84; datign oorrpWad
    1966; linaizing oonttructkxi ««ith
    remediation to begin 9/91 ;
    tupplemental groundwatar Rl
    being conducted
    Beginning pilot atudy;
    ROD tignad 12/88;
    currently in detign ttaga
    TreatabtBty atudiaa oon^latao
    196848; treatment facility on-Ina
    fine* 7/90
    Trealability ttudy conducted;
    ROD ugned 9«V87;
    operational tinoa 4V90
    RD phase
    Clean-up Lavala
    HeU vat aatabithad
    Not yet eKabtahed
    Not yit ••tflbwrMo
    Not yet ettabiahed
    Soib and iludgaa: BAP 9 ppm;
    PCS 23 ppm; VOCt 43 ppm;
    araenic 7 pprri; banzana 14ppm;
    Groundwaler: MCU
    Varied
    .04 ppm benzene; 1 ppm
    carcinogenic PAHa
    
    PCBt aa an indicator of other
    organic! (25 ppm PCBt)
    Uaa than 300 mg/kg tout PAHa;
    (ett than 160 mg/kg potentwy
    CBicinoye.nic rArw
    MO drinking water ttandardt
    Banzana 1 ppb; carcinogenic
    PAHiO^ppb
    Treat man!
    Natural biodegradatton •
    no amendmenta
    Undetermined
    Undeterrrinad
    In litu (lurfaca and
    tubaurfaca); iludgaa
    treated leparalery
    Treatment in a lagoon for
    tkidgai and toilt; pump
    and treat and/or in litu for
    groundwaler
    Three phatet of land
    application with varied
    application* of nutrientat
    1) active - require!
    mcflthry application o(
    nutrient, and monthly
    tiling; 2) enhanced.
    annual appication of
    nutrient! and no ti«nfl;
    •Vtti 3J aWQiriaMitod * no
    addition of nuirientt or
    tilllno
    Groundwator: purrpand
    cartxxi adsorption
    tr*atm»nt Sofl:
    btoi^TMuiatiCMi niatnod •
    •pcc'cCi unoaCvrnnfMa
    Und treatment
    Aqueout bkxeactor
    Land treatment ami liquid
    ioM* reactor
    Fned film bkxeactor (2 in
    lariai)
    In litu (tubaurfaca) uaing
    nutrient enhancement
    • Indicate! a new me m the Table.
    * Information regarding thit tte hai been updated for thia ietue.
    Shading depicti a non-CERCLA trie.
    7-57
    

    -------
    BIOREMEDIATION In the Field
                                                                              Page 11
               CERCLA/RCRA/UST SITES CONSIDERING, PLANNING, OR
                OPERATING FULL-SCALE BIOREMEDIATION SYSTEMS
    Rgn
    VII
    VII
    VII
    VII
    VII
    VII
    VII
    VIII
    VIII
    VIII
    VIII
    VIII
    SRe/Locatlon/lMd
    International
    Paper*
    Jcpfin, MO
    Unrlt
    RCHAlMd
    btenwlbnat
    Paper*
    Joplin, MO
    Unit 2
    RCHAlMKt
    International
    P«p»r*
    Joplin, MO
    Unil3
    flCRAbarf
    International
    Paper*
    JopSn, MO
    Unit4
    flCHAIead
    Park City,
    Kansas*
    Soott Lumber*
    Alon. MO
    Removal lead
    Vogel Paint a Wax.
    IA*
    State read
    Burlington Northern
    Somers, MT
    Enforcement lead
    Che meal
    Distribution Site*
    BilSngs. MT
    State lead
    Libby Groundwater
    Site
    Libby. MT
    Enforcement lead
    Pesticide
    Dntnbufion Facility
    Mlnot.NO
    RCRAIead
    Public Service
    Denver, CO
    LOT lead
    Number
    Frank Oolan
    314-751-3178
    Frank Oolan
    314-751-3179
    Frank Oolan
    314-751-3178
    Frank Oolan
    317-751-3178
    John Wilton
    RSKERL
    405-332-8800
    FTS 743-2259
    Bruce Mormon
    913-236-3881
    FTS 757-3881
    Steve Jones
    913-551-7755
    FTS 276-7755
    Jim Harm
    406-449-5414
    FTS 585-5414
    Jm Morraon
    ECOVA
    206-883-1900
    Julie Daisoglio
    406-44 9- 5414
    FTS 585- 5414
    Jim Morraon
    ECOVA
    206-883-1900
    Suzanne Rol
    303-293-1511
    Comact/Phom
    Contamlnanta/Medla
    24 organic constkuents from
    creosote. Including PAHs,
    PCP/soi
    24 organic constituents from
    creosote. Including PAHs.
    PCP/sol
    24 organic constituents from
    cflK»ot«. Including PAH«.
    PCP/«oJ
    24 organic constituents from
    creosote. Including PAHs.
    PCP/sol
    Refined petroleum
    products/water table aquifer in a
    municipal well field
    Creosote compound»(PAHs,
    benzo-a-pyrene)/sorf
    (noPCP)
    Benzene, ethyl benzene, xylene,
    toluene, MCK/sol
    PAHs, zinc, phenoVsoil,
    sediments, groundwater
    Herbicides (chlorinated
    phenoO/groundwater
    PAHs, PCPs/soil. groundwater
    Pesticides (2,4-D)/soS
    Benzene, xylene. toluene/sol,
    groundwater
    Statua
    Under construction; pibt studies to
    b* conducted concurrently with
    treatment operations
    Under construction; pibt studies to
    b» conducted concurrently with
    treatment operations
    Under construction; pibt studies to
    oo conducted concurrently with
    treatment operations
    Under construction; pibt studies to
    be conducted concurrently with
    treatment operations
    Fun scale cleanup will start 3/91
    Conducted treatability study 1988,
    operational since 6/89; 9.200 tons
    of soil treated
    Bench-scale studies complete;
    ROD signed 9/89;
    design complete, currently in RA
    phase
    Land treatment demonstration
    11/90; pilot studies planned for
    groundwater n 1 1/90;
    ROD signed 9/27/89; full scale
    1992
    Operational since 4/88
    ROD signed 12/88; consent
    decree 10/89; bench-scale
    demonstration project for land
    treatment unit, bioreactor and in
    situ treatment completed; lull-scale
    remedial action to begin Summer
    1991
    Full-scale bioremedialion
    completed 1988
    Operating unit lor one year
    Clean-up Levels
    Sum of the concentrations of 24
    aromatic compound is less than
    600 ppm
    Not yet determined
    Not yet deter mned
    Not yet determined
    Drinking water standards for
    benzene
    500ppmtotalPAHs,14ppm
    benzo-a-pyrene
    TCLP test for leach water
    organcs; tOO mg/kg organic
    hydrocarbons, EPA toxictty test
    Soil. 36 mg/Vg carcinogenic
    PAHs;
    Groundwater 030 ug/1
    carcinogenic PAHs
    5 ppm 2.4-0
    Soil- 88 mg/kg total carcinogenic
    PAHs; 8 ppm non-carcinogenic
    PAHs; 7.3 ppm pyrene; 37 mg/Vg
    PCP; 1 ppb dioxin; 8 moAg
    napthalene; 8 mg/kg
    phenanthrene; 7 3 mcykg pyrene
    Groundwater' 400 uo/1
    carcinogenic PAHs, 40 ug/1 non
    carcinogenic PAHs, 1 05 mg/1
    PCP, 5 mg/l benzene. 50 mg/I
    arsenic; other compounds not
    greater than 10*
    5 ppm 2.4-D
    Not yet established
    Treatment
    Land treatment (covered
    facility)
    Land treatment (covered
    facility)
    Land treatment (covered
    facility)
    Land treatment (covered
    facility)
    Subsurface treatment
    using nitrate as electron
    acceptor
    Land treatment using
    imgation, no nutrient
    addition
    Land treatment
    Soils: land treatment
    Groundwater and
    sediments: in situ
    In situ (subsurface, using
    nutrients and oxygen)
    Soil land treatment
    Groundwater: in situ
    treatment of groundwater
    in fixed film bioreactor
    Above ground and slurry
    phase bctreatmerrl
    
    A Indicates a new site «i the Table
    * Information regarding tha site has been updated lor tha issue.
    Shading depicts a non-CERCLA site.
                                           7-58
    

    -------
    Page 12
                    BIOREMEDIATION in the Field
               CERCLA/RCRA/UST SITES CONSIDERING, PLANNING, OR
                OPERATING FULL-SCALE BIOREMEDIATION SYSTEMS
    Rgn
    VIII
    IK
    a
    «
    a
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    DC
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    •fworaMvwnl Iwd
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    WMtCMiNlW. -
    £n(b»em«*Lea4
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    Wwpwt»
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    Cfcu»H^h<»
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    $anFrmnc»oo,CA
    flCRAh**
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    f«pcn,CA
    CAked
    Former Service
    Station*
    Lo* Angek*. CA
    State leed
    FiMtMtf Tftflk F*Hn
    Tormn»,CA
    CAlM«
    Foil Old Army
    B«M*
    Montwcy, CA
    F*dmllaeUiy
    unforownvnl WMO
    CofNVd/Plion*
    Mumbw
    FcbFbehM
    303-330-1524
    FTS330-1W4
    vtmniti sunfov
    41*-74*4t44
    K*»9lMiW
    CAtM-"«
    HMthSve*
    ai«422-J9lO
    KMStMrittf
    C*0^>t*«
    M**«hSw»
    91><32Z-3910
    FwlHwtlv
    CAD^Jtrf
    «««hSvq..
    JVS-3S2-38Z3
    M WK. 9^^C*WIO
    CAO.pt.rf
    HM»HSMO>.
    «1»-322-ii»4
    Jim McfTiwtt
    ECOVA
    30*^83-1900
    Jkn Mormon
    EOOVA
    20MKM900
    TonyP^.oyi
    81S-50S-2701
    JlmUorrmon
    ECOVA
    3QMC3-1900
    JimChwmitl
    415-744-2389
    Vano*Fong
    415-744-2392
    CoMvnkivit&AMIa
    CraMOto. PCP/toi. groundwitor
    AMM^I Mdn£inL fAnw^uin.
    ItaA RWDury, dUttaraowtfuM.
    QMoraMnt^ t*2 d)cnwopFopcrw»
    iMifeion Wi*tl*l0fld*> TCE»
    bmstn*. phtmi), toiutrw,
    
    0«f»6l
    DiM«rMd«r
    P*Uo)*um hydrocmiboiw/tol
    MEK, VOCt/toil. groundwitw
    8utu«
    TiMlAility and pilot riudiM
    in mail* t»H QJW)
    OOfT^WIVO WIM
    FUmwIid rtwdy »«l in progrw*;
    lult'tfjal* MdnrMdlAtfOA In
    opwationwmlM?
    F»H«crkb^«rH1(*88;
    bJoi^nwctiatkin poiTntofod
    
    BionMtMdiltkM eont>M«4
    Coo«ptu«l wontpUvi >ubrniH*d for
    No (iwtability «tud«« conduetod;
    pr»-lrMlrnint urnpl** eompWcd
    nuking in non-dat*c(
    RvfTvdwuon comptoMd ivBBi
    17,000 cubic y*rot of toi traalad
    Pilot riudin eomp)«tad; off fwitly
    hdMignttag*
    R«m*diation corrpl«<*
    Traatimnt oompM«l 1/91 ;
    300,000 cubic yard* of wi treated
    Biorsmvdiation currently being
    used at an interim measure; plot
    letting competed: moving into
    ROOphaM
    Cteen-up Levele
    Baled on human healh or
    agricuMural ttandardi, whichever
    » more •tringent (to be decided
    in next 6 month*)
    ,1 ppm cadmium; 4)5 ppm
    chromium, tad. wienie; ,002
    ppm meroury; heavy rnelah 1.5
    ppm;1SOppbdtehkxomethane»
    ehbniorm. TCE;700ppb 1-2
    letraoMoride; 550 ppb benzene;
    toluene and cyanide (Mai VOC.
    2 ppm]
    Appmnimalely 100 ppm Mai
    petrotwrn hydrocaitaona
    Approximately 100 ppm total
    petroleum hydroeaibont
    Not yet determined
    Not yet determined
    100 ppm TPH In toi
    .5 ppb TCE in groundwater
    100 ppm TPH in tol; drinking
    water standards
    1 MO ppm total petroleum
    hydroceubofw
    Not yet estabished for >oi;
    MCU lor groundwater
    Treatment
    Undetermined
    BJWMdor-teachale
    treatment plant with metal
    removal system uting
    pocnplexation with EOTA
    Land treatment
    Bioreactor
    In situ bioremedialion ot
    contaminaled sol;
    mowture/nutrienl addition
    oontrolled and monitored
    in the subsurface; oxygen
    supplied via vacuum
    well*
    Sprinkler system to apply
    bioculture formulation;
    colected leachate treated
    in an aerobic biological
    reactor before
    raoirculation
    Above-ground biological
    treatment; »oM phase
    biological treatment
    In sHu biological treatment
    with above-ground
    bioreactor
    In sHu bioremediation,
    closed loop system;
    hydrogen peroxide as
    oxygen source; above
    ground holding tank for
    nutrient addition
    Above ground biological
    treatment
    Pump and treat carbon
    adsorption for
    groundwater, followed by
    land treatment for MEK
    A Indicate* a new tie in the Table.
    * InformeHxi regarding (hit tile ha* been updated for thmmtu*.
    Shading depiclt a non-CEFtCLA tile
    7-59
    

    -------
    BIOREMEDIATION in the Field
                                     Page 13
               CERCLA/RCRA/UST SITES CONSIDERING, PLANNING, OR
                OPERATING FULL-SCALE BIOREMEDIATION SYSTEMS
    
    Rgn
    IX
    
    
    
    
    
    IX
    
    
    
    IX
    
    
    
    IX
    
    
    IX
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    IX
    
    
    
    
    
    
    IX
    
    
    IX
    
    
    
    
    
    
    
    
    
    
    IX
    
    
    
    Site/Location/Lead
    Grower* Air
    S«fvfc»*
    yOOnvif-
    MedkxAFwtt ;
    Woodduvf.CA •
    $tala{ead: -
    Harmon Field*
    Tulare County, CA
    State lead
    
    Hercules
    Incorporated*
    Hercules, CA
    State lead
    JASCO*
    Ml View, CA
    Fund lead
    JH Baxter*
    Weed. CA
    Enforcement lead
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    Koppers Oroville*
    Plant, CA
    Enforcement lead
    
    
    
    
    Liquid Gold*
    Richmond. CA
    State lead
    Montrose Chemical
    Corp of California*
    Torrance. CA
    Enforcement lead
    
    
    £foval Civil
    Engineering
    laboratory
    Port Hueneme. CA
    
    Oil Co,
    Vxaltt, CA
    CAW
    Contact/Phone
    Number
    jotm
    Wesnoltttty
    O^Qert ot
    He»)fft6vJ -JU-J! J.-l
    Jfft^MMf Qtt^Owt*^ flWMW tUVff
    JtekWwit, flftKflVJWrtiFE
    
    
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    ovww sowe wswwuie'w^' m
    MxnrttedtP Navy tw approval;
    p3of iwfe *r« be*nspl«ir>e(i;
    wofWnj on plot d**ign
    CorWut*nsfvl-sc»)»
    bioMmedJaoon
    
    
    Clean-up Level*
    N«t* ******
    
    
    
    
    .:- j •
    Not y«t det»rmin«d
    
    
    
    X ppm TNT, 5 ppm DNT. 5 ppm
    ntfrobenzen*
    
    
    Not y«t est«bbth*9d
    
    
    Groundwalw art*nc 5 ppb,
    chromium 6 ppb, b*nzen« 1
    ppb, PCP 2 2 ppb; PAH* 5 ppb,
    dwxm 000025 ppb
    Surlac* KNto ara^ntc 8 ppm,
    chromium 500 ppm, PCP 17 ppm,
    carcinogenic PAHa 51 ppm,
    doxm 001 ppm, furara 001
    ppm.
    L»acha.« anentcSppm.
    chromium 5 ppm, PCP 1 7 ppm,
    carcinogenic PAHs 005 ppm,
    non-car cinogen ic PAH* 1 5 ppm,
    dioxtn 001 ppm
    Sadmants areentcBppm,
    chromium 18 ppm, zinc 26 ppm,
    carcinogenic PAH* 5 ppm, PCP
    1 ppm, TCP 1 ppm.
    Background (eveto for artenc
    •od and Cr in soil and
    groundwaler, 007 ug/1 PAH* in
    groundwater, 19mgAgin*wl,
    PCP 17mg/kgm»oil, 22ug/)m
    groundwater, d toxin 30 ppt in awl,
    0 53 ppq 1 groundwater
    Not yet established
    
    
    Not yet established
    
    
    
    
    
    Nut »t n)fa0sue
    Shading depicts a non-CERCLA site
    7-60
    

    -------
    Page 14
                                                                           BIOREMEDIATION in the Field
                      CERCLA/RCRA/UST SITES CONSIDERING, PLANNING, OR
                        OPERATING FULL-SCALE BIOREMEDIATION SYSTEMS
     Rgn
         Site/Location/Lead
                         Contect/Ption*
                            Number
                                          ConUminantt/Medta
                                                                         9t«tua
                                                                                              Cle»n-up Level*
                                                                                                                       Treetment
      IX
         P«ot«*
                                                                                         AppTOrimatety 100 ppj* total
                         ECSWA
                                                                                                                 trt»*»
      a
                                                                         uJfct oJamwrftor
         **!*«», I***
                                                                •)*«•
                                                                                             If. ii(»;p
    -------
    BIOREMEDIATION in the Field
                                           Page 15
                   CERCLA/RCRA/UST SITES CONSIDERING, PLANNING, OR
                    OPERATING FULL-SCALE BIOREMEDIATION SYSTEMS
    Rgn
    X
    X
    X
    Sitt/Loc*tlon/LMd
    School District
    Maintenance
    Facilities*
    Seattle, WA
    Stale lead
    Utah Power and
    LigM*
    Idaho Falls. ID
    State lead
    Wyckoff*
    Eagle Haibor,
    Pugot Sound. WA
    PRPIead
    Contact/PhMM
    Number
    Jim Mornson
    ECOVA
    206-883-1900
    Andrew
    Pentony
    206-334-5879
    Rene Fuente*
    206-553-1599
    FTS 399-1 599
    Cont* minima/Media
    Dmselfuel
    CreoKXeysoil
    phenoWgroundwater
    Cnsoeole, PCP/io.1,
    groundwater, surface water
    Statue
    Treatment ongoing until &91 ,
    2,000 cubic yards of soil treated
    Final plan for bioremediation not
    yet submitted
    RI/FS not conducted yet
    Cleen-up Level*
    200 ppm m soil
    50 ppb creosote in soil,
    EPA Region 10 groundwater
    protection standards for
    groundwater
    Not yet established
    Treatment
    Above ground biological
    treatment
    Part of upgradient portion
    not capped - bioremedia-
    tion being used (white rot
    fungus)
    Bioreactor - activated
    sludge for treatment of
    groundwater, possible soil
    and sludge bioremediation
     * Indicates a new site in the Table
     * Information regarding this site has been updated for this «ue
     Shading depicts a non-CERCLA site
    Bioremediation Field Initiative Contacts
    
    If you have information on a site using bioremediation that is
    not identified in Table 1, please submit this information in
    writing to Nancy Dean at TIO.  Additionally, if you have
    laboratory-,  pilot- or  full-scale treatability data on a site,
    please have a copy sent to TIO at the address listed below.
    
    Fran Kremer
    Coordinator, Bioremediation Field Initiative
    U.S. Environmental Protection Agency
    Center for Environmental Research Information (CERI)
    26 W. Martin Luther King Drive
    Cincinnati, OH 45268
    
    Nancy Dean
    Technology  Innovation Office (TIO)
    U.S. Environmental Protection Agency
    Office of Solid Waste  and Emergency Response (OSWER)
    Mail Code: OS-110
    401 M Street, S.W.
    Washington, D.C. 20460
    Upcoming Conference/Publications
    Biotechnology for Wastewater Treatment
    eu«J sponsored by the American Chemical Society Na-
    tional Meettag. Aprif 14-19, 1991. AtIanta,S7fS8.                ;
    The information in this document has been funded, wholly or in part, by the United States Environmental Protection Agency.
    It has been subject to the Agency's peer and administrative review and has been approved for publication as an EPA document.
    Mention of trade names or commercial products does not constitute endorsement or recommendation for use.
                                                     7-62
    

    -------
    Page 16
                                           BIOREMEDIATION in the Field
         SUPERFUND TECHNICAL SUPPORT PROGRAM (TSP)
      The Superfund Technical Support Program has been de-
      signed to facilitate communication and coordination be-
      tween EPA's Superfund site managers (On Scene Coordi-
      nators-OSCs and Remedial Project Managers-RPMs) and
      EPA Headquarters, Regions, State environmental agen-
      cies and the EPA Office of Research and Development
      The purpose of the TSP is to ensure the consistent applica-
      tion of remedial technologies and the timely transfer of
      pertinant technical information.  Through the program,
      EPA has established a network of technical support re-
      sources available to EPA's OSCs and RPMs that includes
      six technical Support Centers and two Forum Representa-
      tives from each Region, one in the area of ground-water
      fate and transport and the other in engineering/treatment
      Technical experts participating in the TSP can assist field
      personnel  with several different  types  of  technical
      projects:
      * Evaluations of the feasibility of technologies as treat-
         ment options;
      • Feasibility study reviews or workplan evaluations;
      • Remedial design reviews;
      • Implementation oftreatability studies;
      • Development or review of sampling plans; and
    
      • Analysis of operational data.
                       For immediate assistance on technical questions, RPMs
                       and OSCs can call one of the six Support Centers:
                       • Ground-Water Fate and Transport Center, Ada,
                         Oklahoma;
    
                       • Monitoring and Site Characterization Center, Las Vegas,
                         Nevada;
    
                       • Environmental Response Center, Edison, New Jersey;
    
                       • Exposure and Ecorisk Assessment Center, Athens,
                         Georgia;
                       • Engineering and Treatment Center, Cincinnati, Ohio;
                         and
                       • Health and Risk Assessment, Cincinnati, Ohio.
    
                       To request on-site assistance or to initiate a technical
                       assistance project, OSCs or RPM's should contact their
                       Regional Forum representative. For projects requiring
                       funding, written requests must be submitted to the appro-
                       priate Support Center. For further information on activi-
                       ties of the Regional Forums or the TSP call Rich Steimle
                       at FTS: 382-7914 or 202/382-7914.
    United States
    Environmental Protection
    Agency
    Center for Environmental Research
    Information
    Cincinnati, OH 45268
          BULK RATE
    POSTAGE & FEES PAID
              EPA
       PERMIT No. G-35
                                                    7-63
    

    -------
          7.24
    EXHIBIT 18 - INNOVATIVE TECHNOLOGY: SLURRY-PHASE
    BIODEGRADATION
                                 United States
                                 Environmental Protection
                                 Agency
                                        Solid Waste And
                                        Emergency Response
                                        (OS-220)
                Directive 9200 5-252FS
                November 1989
    vvEPA             Innovative  Technology
                                Slurry-Phase  Biodegradation
     TECHNOLOGY DESCRIPTION
    
        Slurry-Phase Biodegradanon (SPB) is
     potentially effective in treating various or-
     ganic contaminants. It involves the com-
     mingling of excavated contaminated soil
     and sludge with bioactive microorganisms
                     mass concentration. The residence lime in
                     the reactor varies with the soil or sludge ma-
                     trix, the physical and chemical nature of the
                     contaminants, contaminant concentrations,
                     and the efficiency of the bio-oxidation reac-
                     tions. Upon completion of the process,  the
                     slurry is dewatered and the treated soil is re-
                 Figure 1: Schematic Diagram of a Typical Slurry-Phai
                          Biodegradation Treatment Facility
                                           To Atmoteh*r«
                                                                To Almotprvr*
       Now adapted from MoTac Inc , tor Boot, AJton t Ha/nrton Inc
     in a mobile batch reactor or an in-ground re-
     actor. A typical treatment facility is shown
     in Figure 1.
        Prior to treatment, large-grained con-
     stituents  such as stones and rubble are
     physically removed from the waste.  The
     remaining waste is mixed with water to
     create the desired slurry composition (50
     weight percent solids maximum). Theslurry
     water may be contaminated ground water,
     surface water, or another water source that is
     broughton-site. Theslurry is then mechani-
     cally agitated in a reactor chamber which
     creates and maintains the appropriate ambi-
     ent environmental conditions (e.g..nutrient
     supply, temperature range, oxygen content,
     and pH level) needed for maximum bio-oxi-
     dation of the target contaminants. Microor-
     ganisms may be added initially to seed the
     reactor and/or added continuously  during
     treatment to maintain the appropriate bio-
                     deposited on-site.
                        Advantages of SPB include the follow-
                     ing: biodegradable organic compounds may
                     be  transformed into non-toxic compounds
                     or  mineralized; elaborate or sophisucated
                     equipment is not required; and batch opera-
                     tion may allow more accurate mass-balance
                     determinations.  The major disadvantages
                     are that the treatment ume can be relatively
                     slow and SPB is ineffective against inor-
                     ganic wastes. Applications and limitauons
                     of the SPB technology are discussed below.
    
                     SITE  CHARACTERISTICS  AFFECTING
                     TREATMENT FEASIBILITY
    
                        SPB  has the potential to treat a wide
                     range of contaminants such as pesticides,
                     fuels, creosote, pentachlorophenol (PCP),
                     polychlonnated biphenyls (PCBs), and some
                     halogenated volatile organics. The projected
    effectiveness of this treatment on general
    contaminant groups is provided in Table 1.
        Factors limiting treatmenteffectiveness
    include the inherent biodegradability of the
    target contaminant, dissolved oxygen con-
    tent.operating temperature, soil/sludgechar-
    actenstics, and the presence of reaction-in-
    hibiting compounds such as heavy metals,
    chlondes, or even biodegradation by-prod-
    ucts. Site-specific characteristics and their
    potential impact on  the SPB process are
    listed in Table 2.
        Variables governing the biodegradauon
    process and resulung effectiveness can vary
    greatly between laboratory  and actual field
    conditions. Therefore, in order to accurately
    model the effectiveness of SPB treatment, it
    is necessary to conduct bench- or pilot-scale
    tests at each site of interest.
                  Table 1
        Effectiveness of Biodegradation
      Treatment on General Contaminant
          Groups for Soil and Debris
    Testability
    Groups
    S
    m
    X
    1
    i
    Haog«nai«o: voiatiM
    HaJogwiaicd stm-vouitat
    Noo-ha)og»fl«»d votaito
    Noo-naJogcnaiid ••ml-vottttoi
    PCBa
    P«IC«M>
    Doiins/FuranA
    Organc cyantic*
    Organc corro*iv««
    Votm* m«aJ»
    Non- volatile maul*
    AtQMIM
    Radtoacnv* mal*natm
    Inorgarc corrottwt
    Inorganc cya/Krta
    Oiotun
    FUoucan
    Effectiveness
    •
    9
    •
    •
    O
    O
    insurtiaarit Dau
    X
    X
    X
    X
    0
    X
    X
    X
    X
    X
                                                                                                 PoHnuly OMtnvual
                                    Q
    
                                     X
                                                      7-64
    

    -------
                     T«bl«2
    Site-Specific Characteristics and Impacts on
      Slurry-Phas* Blodagradatlon Treatment
    CharacttriMte*
    Impacting ProcaM
    raadbMlty
    van*w*w*n*
    compoMon
    W*t*r solutmity
    BnoegradabiMy
    T*mp*r*ture oututo
    lS*-7(rCnng*
    Nutrient deficiency
    O>yg*n detldency
    pHouttU*
    4.8 - 8.5 ring*
    McroMI population
    Water dncfiarg**
    andairemfcuMn*
    Nonuntform amid* six*
    Pra**nc* ol eleviled
    levels of
    • HaavymeuM*
    • Highly Oinnneted
    organ ft
    • Sam* pesucid**,
    hwboden
    • Inorganic MM
    Soil/sludge compoailon
    (i *.. cl*y. humus)
    RawBonsfor
    Potential
    fcMMMJt*
    •npvwi
    InconMttm MnrKgrarHllon caused
    by variation kibtotoglal acuvtty
    Contaminant* wth tow coluMlty v*
    haititrto bradegnd*
    Low DtodegradaUlty inhMt
    proem
    Larger, mow drvene mlerobW
    population pre**nt In Hi* ring*
    Lack of adequate nutrient* tor
    btotogfcaJ aaMty
    Lack ol oxygen * rat* limning
    inhbllon ol biological ictivtiy
    Insufficient peculation result* in low
    DtodegrBdainn rau*
    Potential •nvironrmmal aniVor
    n*aHi Impacts
    Wan* mutura* must b* ol uniform
    panic* sat tor prop*/ slurry
    compodlion
    Can b* highly to>K to
    nucroorganisffla
    Clay and humua aorb contamnann
    momtlghtty
    Action* to
    Mnlmto
    fata— » j,i-
    inipMcn
    OMton of WMM ttrMffl
    Non«;
    or tonpr «ipo«jr« ttn« to
    Tvcixxxytnivnt
    Non*:
    or longw wpoaur* lima to
    microorganism:
    or ce-maubolivn with
    inoth*r compound;
    or dilution to nontoifc
    wv*ia
    Tanpanuur* morMomg
    and a^uaunaod
    Ad|u«m*nt ot th*
    camonmirog*n/
    phoapnorua ratio
    O«yo*n monitoring and
    ad|usim*ffli
    Sluog* pH monitorng.
    addtnn ol aooc or
    alkaline compound*
    Cului* t«t. laotkxi ol
    culture strain*
    Poet treatment ptocrmet
    *.g.. air scrubbing,
    cartxxi IWrition)
    PnyUca) separation ol
    large-graded panel**
    Pr«r*atm*m proc*****
    • g.. soil washing,
    precipiaiion) to remove
    constituents Irom or ddute
    hem in th* wast*
    Non*:
    or pH *d|u*tm*n1 or other
    chemical amendment*
                     Table) 3
               Vendor Information
    Company
    Ecova Corporation
    Oetox Industrie)*), Inc.
    MoTec. Inc.
    Biotrol. Inc.
    Contact
    AlBourqun
    Jo*>Daile>y
    John R. Ryan
    Detora Lindstrom
    Address
    3820 159th Slr««lNE
    Redmond. WA 98052
    (206)883-1900
    129 19 Dairy Ash lord
    Sugarland, TX 77478
    (713)240-0892
    2241 9 72th Ave South
    Kent. WA 98032 ,
    (206) 872-0247
    1 1 Peavvy Road
    ChasKa. MN 55318
    (612)448-2515
     TECHNOLOGY CONSIDERATIONS
    
        Some treauneni limitations can be minimized by implementing
     pre- and post-treatment processes.  For instance, wastes contami-
     nated with heavy metals and high concentrations of  volatile and
     semi-volatile organics can be  initially  treated prior to microbial
     degradation.  Fugitive emissions of volatile organic compounds
     may also warrant further treatment (e.g., carbon adsorption). Accli-
     mation  of the microorganisms to the environment is waste/sue
     specific and typically takes between 1 to 3 days.  The standard
     reactor  vessel requires an energy supply to run a 75 horsepower
     engine.
    
     TECHNOLOGY STATUS
    
        The following vendors claim to have successfully applied SPB
     to various media and waste types and presently possess the technol-
     ogy to conduct full-scale waste remediation:
    
     •   Ecova Corporation applied full-scale SPB at a hazardous waste
        site to treat contaminated sludges containing a combination of
        pesticide and chlorinated organic wastes. Further treatment
        information is not available.  Ecova quotes the cost of a treata-
        bility test to be between $5,000 and $50,000, depending on the
        chemistry of the treatability groups.
    
        Detox Industries, Inc. applied pilot-scale SPB treatment to
        PCBs at a hazardous waste site in Heme, Texas. Approximately
        0.75 tons of sludge containing 2,000 ppm PCBs  were treated to
        less than 4 ppm (99.8 percent removal) within four months.
        Detox quotes the  cost of a treatability test to be between
        $20,000 and $25,000, The estimated range for treatment costs
        is between $200 and $600 per cubic yard, depending on site-
        specific characteristics.
    
     •   MoTec, Inc.  has applied full-scale SPB treatment to contami-
        nated sludges at Slate-level uncontrolled hazardous waste sites
        containing high concentrations of PAHs and PCPs associated
        with wood treatment operations. They estimate the average
        half-life of the biodegradation process to be 90 days.  MoTec
        quotes the average  cost of a treatability study  to be approxi-
        mately $20.000.
    
        Vendor names, contacts, and addresses can be found in Table 3.
    These vendors state that pilot- and full-scale SPB treatments have
    been demonstrated, selected and implemented at private and State
    sites. This technology has not yet been thoroughly demonstrated to
    the  SITE program, possibly due  to quality  control  and/or project
    management. SPB has been tentatively selected as a component of
    the  source control remedy at the General Motors Superfund site in
    Massena, NY, where SPB will be applied to small volumes of PCB-
    contaminated oils contained in an undetermined number of tanks.
    
    OFFICE OF  RESEARCH AND DEVELOPMENT CONTACTS
    
        • More information concerning SPB may be obtained from Ron
    Lewis or Naomi Barkley, U.S. EPA, Risk Reduction Engineering
    Laboratory. Cincinnati, Ohio 45268, (513)  569-7856 or FTS 684-
    7856. and (513)569-7854 or FTS 684-7854, respectively.
                                                    7-65
    

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        7.25     EXHIBIT 19 - BIOREMEDIATION OF CONTAMINATED SURFACE SOILS
    &EFA
               Research and Development
    Bioremediation of
    Contaminated
    Surface Soils
    

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                                                         EPA-600/9-89/073
    Bioremediation of Contaminated
    Surface Soils
    J.L Sims, R.C. Sims, and J.E. Matthews
    August 1989
    This report was developed by the
    Robert S. Kerr Environmental Research Laboratory
    U.S. EPA, ORD
    Ada, Oklahoma 74820
                                  7-67
    

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    Contents
    
    1.  Introduction	  1
    2.  Overview of Soil Biodegradation and Other Soil Processes	  1
    3.  Waste and Soil Characterization  	  5
    4.  Microbial Factors Affecting Biodegradation	  6
    5.  Treatability Studies for Determination of Bioremediation Potential	  8
    6.  Integration of Information from Site Characterization and Treatability Studies	  10
    7.  Potential Applications and Limitations of Bioremediation Technology 	  11
    8.  Example of Bioremediation Potential for Polycyclic Aromatic Hydrocarbons (PAHs) in a Soil System  	  12
    9.  Implementation of Bioremediation at Sites Contaminated with Organic Wastes	  18
    10.  Conclusions	  20
    11.  References  	  20
                                                      7-68
    

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     1.   Introduction
    Biological remediation of soils contaminated with organic
    chemicals Is an alternative treatment technology that can
    often meet the goal of achieving a permanent clean-up
    remedy at hazardous waste sites, as encouraged by the
    U.S. Environmental Protection Agency (U.S. EPA) for
    implementation of The Superfund Amendments and
    Reauthorization Act (SARA) of 1986. Bioremediation is
    consistent with the philosophical thrust of SARA, for It
    involves the use of naturally occurring microorganisms to
    degrade and/or detoxify hazardous constituents in the soil
    at a contaminated site to protect public health and the
    environment. Bioremediation of contaminated soils,
    including applications and limitations, has been addressed
    at several recent scientific meetings and conferences [1, 2,
    3,4]. With regard specifically to wood preserving
    contaminated sites McGinnis et al. [5] have stated that
    reliable, safe, economical bioremediation techniques using
    soil systems are attractive and warrant thorough study and
    evaluation. The use of bioremediation techniques in
    conjunction with chemical and physical treatment
    processes, I.e., the use of a "treatment train," is an
    effective means for comprehensive site-specific remediation
    18].
    
    Wilson [7] identified biological processes, including microbial
    degradation, as a mechanism for attenuating contaminants
    during transit through the vadose zone to the groundwater.
    (The vadose zone is the region extending from the ground
    surface of the earth to the upper surface of the principal
    water-bearing formation [8]). On-site soil remedial
    measures using biological processes can reduce or
    eliminate groundwater contamination, thus reducing the
    need for extensive groundwater monitoring and treatment
    requirements [7, 9,10]. Lehr [11] also emphasized that
    monitoring for attenuation of contaminants occurring in the
    vadose zone provides information for understanding their
    movement in and  through the vadose zone and in the
    groundwater.
    
    Qn-site bioremediation of contaminated soils generally is
    accomplished by using one of three types of systems:
    
            (1) In situ;
            (2) Prepared bed; or
            (3) Bio re actor (e.g., slurry reactors) systems.
    
    This discussion focuses on in situ and prepared bed
    systems, which utilize the soil as the treatment medium, as
    contrasted to bioreactor systems, in which contaminated
    soil is treated in an aqueous medium.
    
    An in situ system consists of treating contaminated soil in
    place.  Contaminated soil is not moved from the site. In
    general, naturally  occurring microorganisms are allowed to
    treat the contaminants. Treatment often may be enhanced
    by a vahety of physical/chemical methods, such as
    fertilization, tilling, soli pH adjustment, moisture control, etc.
    In some instances, addition of supplemental populations of
    adapted organisms may serve to enhance treatment.
    
    In a prepared bed system, the contaminated soil may be
    either (1) physically moved from its original site to a newly
    prepared area, which has been designed to enhance
    bioremediation and/or to prevent transport of contaminants
    from the site; or (2) removed from the site to a storage area
    while the original location is prepared for use, then returned
    to the bed, where the treatment is accomplished.
    Preparation of the bed may consist of such activities as
    placement of a clay or plastic liner to retard transport of
    contaminants from the site, or addition of uncontaminated
    soil to provide additional treatment medium. Treatment may
    also be enhanced with physical/chemical methods, as with
    in situ systems.
    2.   Overview of Soil  Bio-
    degradation and Other  Soil
    Processes
    Bioremediation of a soil contaminated with organic
    chemicals is accomplished by degradation of specific
    organic constituents, i.e., the "parent" compounds. The
    term degradation may refer to complete mineralization of
    the constituents to carbon dioxide, water, inorganic
    compounds, and cell protein. The ultimate products of
    aerobic metabolism are carbon dioxide and water.
    However, biodegradation of a compound is frequently a
    stepwise process involving many enzymes and many
    species of organisms. Therefore, in the natural
    environment, a constituent may not be completely
    degraded, but only transformed to intermediate product(s)
    that may be less, equally, or more hazardous than the
    parent compound, as well as more or less mobile in the
    environment.  Under anaerobic conditions (i.e., in the
    absence of oxygen),  metabolic activities  result in the
    formation of incompletely oxidized simple organic sub-
    stances such as organic acids as well as other products
    such as methane or hydrogen gas.
    
    The goal of on-site bioremediation is degradation that
    results in  detoxification of a parent compound to a product
    or product(s) that are no longer hazardous to human health
    and/or the environment. Information on degradation and
    detoxification of a parent compound may be obtained using
    chemical  and bioassay analyses [12,13,14]. Chemical
    analysis and identification of intermediate products may
    yield information about biochemical degradation pathways
                                                         7-69
    

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     and products, but are often time consuming and expensive.
     Bioassays may be used to demonstrate detoxification of
     parent compounds and are usually less expensive and time
     consuming. Before bioremediation is implemented at a
     contaminated site, degradation pathways for specific
     constituents present and/or detoxification  demonstrations
     require investigation to ensure that environmental and
     health protection can be achieved.
    
     Degradation of most organic compounds in soli systems
     may be described by monitoring their disappearance In  a
     soil through time. Disappearance, or rate of degradation, is
     often expressed as a function of the concentration of one or
     more of the constituents being degraded. This is termed the
     order of the reaction and is the value of the exponential
     used to describe the reaction [15]. Either zero or first order
     power rate models are often used in environmental studies.
    
     Zero order reactions are ones in which the rate of
     transformation of an organic constituent is unaffected by
     changes in the constituent concentration because the
     reaction rate is determined by some other factor than the
     constituent concentration. If a constituent C is transformed
     to X, the rate of change of C is:
    
            dC/dt*-k                       (1)
    
     On integration, the equation becomes:
    
            C, = C.-W                        (2)
    
     where Ct = concentration of constituent remaining at time t;
     Co = initial concentration of constituent; and k = zero order
     rate constant. A useful term to describe the reaction kinetics
     is the half-life, t  which is the  time required to transform
     50% of the initiafconstituent:
                Co/2,then t,a-C./2k
    (3)
    The first order rate model (Equation 4) is widely used
    because of its effectiveness in describing observed results
    as well as its inherent simplicity. Its use also allows
    comparison of results obtained from different studies. In a
    first order rate reaction, the rate of transformation of a
    constituent is proportional to the constituent concentration:
            dC/dt = -kC
                                            (4)
    where C = contaminant concentration (mass/mass); t =
    time; and k = first order rate constant (1Aime).  After
    integration of Equation 4 and rearrangement of the
    integrated equation, Equation 5 may be used to graphically
    determine the rate constant, k:
            ln(C/Co) = -kt
    (5)
    where C, = concentration of constituent remaining at time t;
    and Co = initial concentration of constituent. A plot of ln(C/
    C0) versus t is linear with a slope of -k.  The rate constant K
    is independent of the concentration of constituent, since the
    slope is constant over time To calculate the time required
                      to transform one-half of the initial constituent (C, - C/2), the
                      following equation is used:
                               In ((C0/2)/C.) = -kt,,
                      which is equal to:
                               1/2
                                  . 0.693/k
                                             (6)
    
    
                                             (7)
                      where t1/2* half-life of the constituent.
    
                      First order kinetics generally apply when the concentration
                      of the compound being degraded is low relative to the
                      biological activity in the soil. However, very low
                      concentrations may be insufficient to initiate enzyme
                      induction or support maintenance requirements necessary
                      for microbial growth, even if the compound can  be used as
                      an energy source [16].
    
                      A second model used to describe degradation in soils Is the
                      hyperbolic rate model, which is similar to Michaelis-Menten
                      enzyme kinetics. This model Is expressed as:
                              dC/dt.
                    -k,C/k2+C
    (8)
    where k, and k, are constants. The constant k, represents
    the maximum rate of degradation that is approached as the
    concentration increases. This model simulates a catalytic
    process in which degradation may be catalyzed by
    microorganisms.
    
    Often an organic compound that cannot be used as a sole
    carbon and energy source for microorganisms is degraded.
    Biodegradation of the compound does not lead to energy
    production or cell growth. This biodegradation process Is
    referred to as cometabolism [17] or co-oxidation if the
    transformation involves an oxidation reaction [18].
    Cometabolism occurs when an enzyme produced by an
    organism to degrade one substance that supports growth
    also degrades another nongrowth substrate that is neither
    essential for, nor sufficient to, support microbial growth.
    The nongrowth substrate Is only Incompletely oxidized, or
    otherwise transformed,  by the microorganism involved,
    although other microorganisms may utilize by-products of
    the cometabolic process. Cometabolism may be a
    prerequisite for the mineralization of many recalcitrant
    substances found in the environment, such as  polycyclte
    aromatic hydrocarbons  [19].
    
    Measurement of physical abiotic loss mechanisms and
    partitioning of organic constituents in a soil should be used
    in conjunction with conventional degradation studies to
    ensure that information  generated from modeling
    degradation represents only biological degradation of parent
    compounds, and not other possible disappearance
    mechanisms of the constituents in the soil system.
    
    The soil is a complex system, consisting of four phases
    (Figure!):  (1) soil gases; (2) soil water; (3) inorganic
    solids: and (4)  organic solids. Gases and water, which are
    found in the pore spaces of a soil, together comprise about
    50% (by volume) of a typical soil. An organic constituent,
                                                           7-70
    

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        Water
         15-35%
     Inorganic
    38-45%
    Figure 1. Typical Volumetric Composition of Sol
    depending upon Its solubility and Its tendency to volatilize,
    may be found In varying proportions in these two phases.
    Pore sizes and continuity and relative proportions of water
    and air In the pores are examples of factors that affect the
    mobility of contaminants (both upward out of the soil and
    downward to the saturated zone) in a specific soil.
    
    Depending upon site-specific soil characteristics and
    constituent-specific chemical and physical properties,
    constituents in these two phases may be relatively mobile
    or Immobile.
    
    Soil solids are comprised of organic and inorganic
    components. The inorganic components are comprised of
    sparingly soluble chemicals known as minerals, which are
    primarily sand, silt, and clay particles in most soils. The
    solids may contain highly reactive charged surfaces that
    play an important role In immobilizing organic constituents
    in a specific soil.  Certain types of clays are especially high
    in negative charges, thus exhibiting what Is termed as a
    high cation exchange capacity. Clays may also contain
    positively charged surfaces and act as anion exchange
    media for negatively charged constituents.
    
    Soil organic matter also has many highly reactive charged
    surfaces and may aid in retaining organic constituents in a
    soil system. The term humus refers to the relatively stable
    portion of soil organic matter that remains in soil after the
    chemicals comprising plant and animal residues have
    decomposed. Hydrophobic organic constituents may
    partition from soil water into soil organic matter and thus
    become less mobile In the soil system.  Immobilization of
    constituents may result in additional time for biodegradation
    to occur.  However, immobilization also could result in less
    bioavailability to microorganisms.  Research Is required to
    discover whether such Immobilization constitutes adequate
    treatment If the constituent is so tightly and irreversibly
    bound that It poses no harm to human health and the
    environment
    Soil solid/organic chemical Interactions may be quite
    complex. The structure of an organic constituent, as It
    affects such properties as molecular volume, water
    solubility, octanol-water partition coefficients, and vapor
    pressure, determines the magnitude of sorptlon onto the
    surfaces of a specific soil. The specific aspects of chemical
    structure that affect sorptlon onto soil surfaces, as
    summarized by Dragun [20], Include:
    
    (1)      molecular size- In general, the larger the molecule,
            the greater its tendency to exist in the adsorbed
            state. This Is attributed to multiple Van der Waal's
            forces arising from many points of contact between
            the soil surface and the adsorbed molecule;
    
    (2)      hydrophobldty or llpophlliclty-hydrophobicity refers
            to the preferential migration to and accumulation of
            an organic chemical In hydrophobte solvents or on
            hydrophoblc surfaces such as soil organic matter,
            in preference to aqueous solvents or hydrophllte
            surfaces. In general, molecular groups comprised
            of carbon, hydrogen, bromine, chlorine, and iodine
            are hydrophoblc groups,  while molecular groups
            containing nitrogen, sulfur, oxygen, and
            phosphorus are primarily hydrophllte groups. The
            net hydrophobicity of a molecule is determined by
            the combined effects of hydrophoblc and
            hydrophilic groups that comprise the molecule;
    
    (3)      molecular charge- some  organic chemicals contain
            functional groups with permanent positive negative
            or positive charges. These compounds will interact
            with charged soil solids and adsorb onto soil
            surfaces. Soils typically possess a significantly
            greater number of negative surfaces than positive
            ones, thus negatively charged organic anions may
            be repelled by soil surfaces. Some organic
            chemicals contain functional groups that may or
            may not possess a positive or negative charge.
            depending upon the acidity of the soil/water
            system. The pK. of a chemical is a mathematical
            description of the effect of acidity on the charge of
            the chemical. The relative ratio of charged to
            uncharged molecules at  a pH level in a soil/water
            system may be estimated and used in identification
            of the effect  of a molecular charge on the extent of
            adsorption. For chemicals that possess both types
            of functional groups, I.e., ones that can acquire a
            positive charge and ones that can acquire a
            negative charge, the isoelectric point (IP) may be
            used to predict the effect of pH on the adsorption
            of these chemicals. The  IP is the pH at which the
            organic chemical has zero charge. Above the IP,
            the organic chemical has a net negative charge;
            below the IP, the organic chemical has a net
            positive charge. The IP represents a general
            summation of the effects of the pK.s of each
            functional group in the molecule;
    
    (4)      organic molecular functional groups that undergo
            hydrogen bonding- hydrogen bonding occurs when
            a hydrogen atom serves as a bridge between two
                                                          7-71
    

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     (5)
            electronegative •tern*. The hydrogen atom to
            HnMtoon*eleetionegatJveatombyacovalent
            bond and to the other by an electrostatic bond;
    
            three-dimensional arrangement and Interaction of
            molecular functional group*- adsorption potential of
            a chemical Is affected by Intramolecular reaction*
            of adjacent molecular group* or fragment* or
            Interference with a particular adsorption mech-
            ajilsm caused by the presence of one or more
            functional group* or molecular fragment*; and
     (6)
            molecular functional group* that undergo coordina-
            tion bonding- coordination I* the formation of a
            weak bond between an organic molecule that
            is capable of donating electron* and adsorbed
            cation* that are capable of accepting slsctrons.
            The net resut is a partial overlap of orbital* and a
            partial exchange of electron density. Coordination
            can occur between organic chemical* and cation*
            In the water phase of a soil system a* wel a* with
            soil particle surfaces and with adsorbed cation*.
    
    Many chemical propertle* of a specific organic chemical are
    the result of sums and Interaction* of functional group
    contribution* to each sped to property.
    
    Other abiotic los* mechanisms In addttton to surface
    sorptton/desorption reaction* that may account for toss of
    parent compound* Include:
    (1)
    (2)
    (3)
            hydrolysis- a chemical reaction In which an organic
            chemical reacts with water or a hydroxide ion;
    
            substitution and eHminatlon- reaction* where other
            chemical* In the *oH react with an organic
    (4)
            oxidation- the reaction resulting In the removal of
            electrons from a chemical. This removal generally
            occurs by two different pathway*: (a) heterorytte or
            polar reaction*, (an etectrophllc agent attack* an
            organic molecule and remove* an electron pair
            leading to the formation of an oxidized product); or
            (b) homorytte or free-radical reaction (an agent
            remove* only one. electron to form a radical that
            undergoes further reaction); and
    
            reduction- which I* a reaction that results In a net
            gain of electrons [20].
    Successful btoremedtation depends upon a thorough
    characterization and evaluation of the pathway* of move-
    ment and potential mechanism* of removal of organic
    constituents at a specific site, a* Illustrated in Figure 2. To
    assess the potential for use of btoremedlatlon, the rate of
    transport of the constituents may be compared to the rate
    of degradation to determine If the rate of transport I* signi-
    ficant In relation to the rate of degradation.
                                                              Figure 2.  Fat* of Hezardoua Contaminant* In SoH
    A means of predicting rate of transport of a constituent
    through a soil system I* to describe to mobiltty (or relative
    Immobility) by predicting to retardation. Retardation I* a
    factor that describe* the rotative velocity of the constituent
    compared to the rate of movement of water through the
    soil. I.*..:
    
            R.V./V.                       (9)
    
    where R • retardation factor; V. - average water velocity;
    and Vc • average constituent velocity. A retardation factor
    greater than one indicate* that a constituent I* moving more
    slowly than water through a sol. A factor developed from a
    transport model combined wWi a description of sorption
    processes, as denned by a linear Freundllch Isotherm [21,
    22], can be calculated from the following equation:
                                                                      R - 1 + (pK/9)
                                            (10)
    where p « soil bulk density; K^ - soH water partition
    coefficient, which describes the partitioning between the soil
    solid phase and soil water; and 6 « volumetric moisture
    content. This Information can be used to manage a
    contaminated sou system (l.e.. through control of soil
    moisture, changes In bulk density, or addition of
    amendments to the soil that affect the sott water partition
    coefficient) so that constituents can be "captured" or
    contained within the system, thus allowing time for
    Implementation and performance of btoremedlation
    treatment techniques.
                                                          7-72
    

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    3.   Waste and Soil Charac-
    terization
    Interfacing "soil-based behavioral characteristics'' of specific
    organics with specific site and soil properties allows a
    determination of potential for bioremediatlon of a site and
    potential for contamination of other media, i.e., the ground
    water under the contaminated area, the atmosphere over
    the site or at the site boundaries, surface waters, etc.
    Specific characteristics important for describing and
    assessing the environmental behavior and fate for organic
    constituents in soil are listed in Table 1.  For each chemical,
    or chemical class, the information required can be
    summarized as: (1) characteristics related to potential
    leaching, e.g., water solubility, octanol/Water partition
    coefficient, solid sorption coefficient; (2) characteristics
    related to potential volatilization, 0.9., vapor pressure,
    relative volatilization index; (3) characteristics related to
    potential biodegradation, e.g., half-life, degradation rate,
    biodegradability index; and (4) characteristics related to
    chemical reactivity, e.g., hydrolysis  half-life,  soil redox
    potential [21].
    
    An adequate site characterization, including surface soil
    characteristics,  subsurface hydrogeplogy, and micro-
    biological characteristics, is the basis for the rational design
                                       of a bioremediatlon system. Site constraints may limit rate
                                       and/or extent of treatment of the contaminated vadose
                                       zone; therefore, a thorough site characterization Is
                                       necessary to determine both the three-dimensional extent
                                       of contamination as well as engineering constraints and
                                       opportunities.
    
                                       Important soil hydraulic, physical, and chemical properties
                                       that affect the behavior of organic constituents in the
                                       vadose zone are presented in Table 2. In this zone, water
                                       primarily  coexists with air,  though saturated regions may
                                       occur. Perched water tables may develop at interfaces of
                                       layers with differing textures. Prolonged infiltration may
                                       also result in saturated conditions. The vadose zone
                                       usually consists of topsoils, typically three to six feet deep,
                                       which are weathered geological materials,  arranged  in
                                       more or less well developed profiles. Water movement in
                                       the vadose zone is usually unsaturated, with soil water at
                                       less than  atmospheric pressure. Weathered topsoil
                                       materials gradually merge with underlying earth materials,
                                       which may include residual or transported clays or sands.
                                       The topsoil differs from the material lying below It in that It it
                                       more weathered, contains organic matter, and is the zone
                                       of plant root growth. In some regions, the entire vadose
                                       zone may be hundreds of feet thick and the travel time  .
                                       constituents to ground water hundreds or thousands of
                                       years. Other regions may be underlain by shallow potable
                                       aquifers that are especially susceptible to contamination
                                       due to short transport times and reduced potential of soil
                                       materials and processes for pollutant attenuation.
         Tabtol. Soil-BcMd Witt* Characterization [21J
         Chemical Class
          Soil Sorption
          Parameters
       Soil Degradation
         Parameters
      Chemical
      Properties
         Acid
         Base
         Polar neutral
         Nonpolar neutral
         Inorganic
    Freundhch sorption constants
      (K.N)
    Sorption based on organic
     carbon content (K  )
    Octanol water partition co-
      efficient (K^j
    Half-life (t,,)
    Rate constant (first order)
    Relative biodegradabiliiy
    Molecular weight
    Melting point
    Specific gravity
    Structure
    Water solubility
         Volatilization Parameters
                               Chemical Reactivity
                                                                                   Soil Contamination Parameters
         Air.water partition coefficient (KJ
         Vapor pressure
         Henry's law constant (1/KJ
         Sorption based on organic carbon
           content (K)
         Water solubility
                                  Oxidation
                                  Reduction
                                  Hydrolysis
                                  Precipitation
                                  Polymerization
                             Concentration in soil
                             Depth of contamination
                             Dateofcontaminaton
                                                        7-73
    

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     TaMe2. SMe aiid SoN Characteristics MentMed aa
             Important In In SHu Traatmant [21]
     Site location/topography and slope
    
     Soil type, and extent
    
     Soil profile properties
             boundary characteristics
             texture*
             amount and type of coarse fragments
             structure*
             color
             d60roo of mottling
             bulk density*
             day content
             type of day
             cation exchange capacity*
             organic matter content*
             pH*
             Eh*
             aeration status*
    
     Hydraulic properties and conditions
             soil water characteristic curve
             field capacity/permanent witting point
             water holding capacity*
             permeability* (under saturated and a range of
              unsaturated conditions)
             infiltration rates*
             depth to impermeable layer or bedrock
             depth to groundwater,* including seasonal variations
             flooding frequency
             runoff potentiaP
    
     Geological and hydrogeotoglcai factors
             subsurface geological features
             groundwater flow patterns and characteristics
    
     Meteorological and cttmatofogical data
             wind vetodty and direction
             temperature
             precipitation
             water budget
    •Factors that may be managed to enhance soil treatment
    Microbiological characterization of a contaminated site
    should be conducted to ensure that the site has a viable
    community of microorganisms to accomplish biodegradation
    of the organic constituents present at the site.  Approaches
    for estimating the kinds, numbers, and metabolic activities
    of soil organisms Include:
    
    (1)      determination of the form, arrangement, and
            blomass of microorganisms In the soil;
    
    (2)      Isolation and characterization of subgroups and
            species; and
     (3)     detection and measurement of metabolic
             processes [15].
    
     Examples of techniques to accomplish these activities
     include direct microscopy of soil (e.g., fluorescent staining,
     buried-slide technique), biomass measurement by chemical
     techniques (e.g., measurement of ATP), measurement of
    • enzyme activity, and cultural counts of microorganisms
     (e.g., plate counts, dilution counts, Isolation of specific
     organisms). Biotransformatlon studies that measure the
     disappearance of contaminants or mineralization studies
     that indicate complete destruction of contaminants to
     carbon dioxide and water may be used to confirm the
     potential for biodegradation of specific organic chemicals.
     Specific techniques Include batch culture and electrolytic
     respirometer studies. Controls to detect abiotic
     transformation of the contaminants and tests to detect toxic
     effects of contaminants on mterobial activity should be
     included in the studies.
    
     Information from waste and soil/site characterization studies
     of a specific site and from laboratory evaluations of
     biodegradation and Immobilization potential of specific
     constituents at the site may be integrated by the use of
     predictive mathematical models. The resulting mathematical
     description may be used to: (1) evaluate the effectiveness
     of use of on-site bioremediation for treatment of the
     contaminated soil; (2) develop appropriate containment
     structures to prevent unacceptable waste transport from the
     treatment zone; and (3) design performance monitoring
     strategies.
    
    
     4.  Microbial  Factors
    
     Affecting Biodegradation
     The upper layers of soil contain large numbers and diversity
     of microorganisms. Biodegradation of organic constituents
     Is accomplished by enzymes produced by the
     microorganisms. Since many enzymes are not released by
     mterobial cells, substances to be degraded must contact or
     be transported into the cells. Enzymes are generally
     specific in the substances they affect, so many types may
     be required to complete biodegradation of organic
     constituents. The production of enzymes is genetically
     controlled, thus mutations and adaptations of the native soil
     mterobial populations can Improve the ability of the
     populations to degrade organic substances [23].
    
     Mterobial ecologists have identified ranges of critical
     environmental conditions that affect the activity of soil
     microorganisms (Table 3). Many of these conditions are
     controllable and can be changed to enhance biodegradation
     of organic constituents.
    
     Water is necessary for mterobial life, and the soil water
     matric potential against which microorganisms must extract
     water from the soil regulates their activity. (The soil matric
                                                          7-74
    

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       TaMeS.
                   DM Activity [18,21,23]
       Environmental F»Ox
    Optimum Levee)
      Avaiabto col water
    
    
      Oxygen
       Redox potential
      pH
    
      Nutrient*
      Temperature
    25-85% ofwakwhoMng
     capacity;-0.01 MPa
    
    Aerobic metabolism: Greater
     than 0.2 mg/l dbsolved
     oxygen, minimum air-Wed
     pore •pace of 10%;
    Anaerobic metabolism: O,
     concentrations leee than 1%
    
    Aorobos and fecult&DVo
     anaerobes: greater than
     50 mUUvolts; Anaerobes:
     less than 50 millivolts
    
    5.5 • 8.5
    
    Sufficient nitrogen,
     phosphorus,  and other
     nutrients so notlmHIng
     to mfcnbiaJ growth
     (Suggested C:NP rate of
     120:10:1)
    
    15-4S*C(Mesophles)
    potential Is the energy required to extract water from the
    soil pores to overcome capillary and absorptive forces). Soil
    water also serves as the transport medium through which
    many nutrients and organic constituents diffuse to the
    mteroblal cell, and through which metabolic waste products
    are removed. Soil water also affects soy aeration status,
    nature and amount of soluble materials, soil water osmotic
    pressure, and the pH of the soil solution (15J.
    
    Microblal respiration, plant root respiration, and respiration
    of other organisms remove oxygen from the soil
    atmosphere and enrich It with carbon dioxide. Oases diffuse
    into the soil from the air above It, and gases in me soil
    atmosphere diffuse into the air. However, oxygen
    concentration In a soil may be much less than In air while
    carbon dioxide concentrations  may be many times that of
    air. Even so, a large fraction of the microblal population
    within the soil depends on oxygen as the terminal electron
    acceptor in metabolism. When soil pores become filled with
    water, the diffusion of gases through the soli Is restricted.
    Oxygen may be consumed faster than it can be replaced by
    diffusion from the atmosphere,  and the soil may become
    anaerobic. Clay content of soil and the presence of organic
    matter also may affect oxygen content in soil. Clayey soils
    tend to retain a higher moisture content, which restricts
    oxygen diffusion, while organic matter may Increase
    microblal activity and deplete available oxygen. Loss of
    oxygen as a metabolic electron acceptor Induces a change
    in the activity and composition of the soil microblal
    population. Facultative anaerobic organisms, which can use
    oxygen when It Is present or can switch to alternative
    electron acceptors such as nitrate or sulfate In the absence
    of oxygen, and obligate anaerobic organisms become the
    dominant populations.
    
    Another soil parameter that describes the effect of the soil
    environment on metabolic processes is the redox potential
    of the soil (15]. Biological energy Is obtained from the
    oxidation of reduced materials.  Electrons are removed from
    organic or inorganic substrates to capture the energy that is
    available during the oxidative process. Electrons from
    reduced compounds are moved along  respiratory or
    electron transport chains composed of a series of
    compounds. In an aerobic process, Ot acts as the terminal
    electron acceptor.  In some cases where Os Is not
    available, nitrate (NOA iron (Fe»*), manganese (Mn*»), and
    sulfate (SO*-) can ad as electron acceptors if the
    organisms have the appropriate enzyme systems. A
    measurement of the oxidation-reduction potential (redox
    potential) of a soil provides a measurement of the electron
    density of the system. As a system becomes reduced. Os
    Is depleted, and other substances are used as terminal
    electron acceptors. There is a corresponding increase In
    electron density, resulting In a progressively Increased
    negative potential. Redox potential Is measured as Eh,
    expressed In millivolts, or as Pp which Is equal to -log [e-]
    where [e-] Is the concentration of negatively charged
    electrons.
    
    Oxygen levels in a soil system can be maintained by:
    
    (1)      prevention  of saturation with water;
    
    (2)      presence of sandy and loamy soil materials
            (excessive  day contents are undesirable);
    
    (3)      moderate tilling;
    
    (4)      avoidance of compaction of soil; and
    
    (5)      limited addition of additional carbonaceous
            materials [23].
    
    Soil pH also affects the activity of soil microorganisms.
    Fungi are generally more tolerant of acidic soil conditions
    (below pH 5) than are bacteria. The solubility of
    phosphorus, an important nutrient in biological systems, Is
    maximized at a pH value of 6.5. A specific contaminated
    soil system may require management of soil pH to achieve
    levels that maximize mterobial activity. Control of pH to
    enhance microblal activity may also aid In the immobilization
    of hazardous metals in a soil system (a pH level greater
    than 6 is recommended to minimize metal transport).
    
    Mterobia'l metabolism and growth Is dependent upon
    adequate supplies of essential macro- and micronutrients.
    Required nutrients must be present and available to
                                                            7-75
    

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     microorganisms in: (1) a usable form; (2) appropriate
     concentrations; and (3) proper ratios [20], If the wastes
     present at the site are high In carbonaceous materials and
     tow In nitrogen (N) and phosphorus (P), the soils may
     become depleted of available N and P required for
     blodegradatlon of the organic constituents. Fertilization
     may be required at some contaminated sites as a
     management technique to enhance microbial degradation.
     Biodegradatton of organic constituents declines with
     towering of soil temperature due to reduced microbial
     growth and metabolic activity. Blodegradatlon has been
     shown to essentially stop at a temperature of 0° C. Soils
     exhibit a variation in the  temperature of the surface layers,
     both dlumally and seasonally. Diumal changes of
     temperature decrease with depth of the soil profile. Due to
     the high specific heat of water, wet soils are less subject to
     large diurnal changes than dry soils [15].  Factors that affect
     soil temperature Include  soil aspect (direction of slope),
     steepness of slope, degree of shading, soil color, and
     surface cover.
    
     The environmental factors presented In Table 3, as well as
     soil and waste characteristics, interact to affect microbial
     activity at a specific contaminated site.  Computer modeling
     techniques are useful to  attempt to describe the interactions
     and their effects on treatment of organic constituents in a
     specific situation.
     5.  Treatability Studies  for
     Determination of Biore-
     mediation Potential
    Treatability studies for sites contaminated with organic
    wastes  are used to provide specific information concerning
    the potentlal'rate and extent of bioremedlation of surficlal
    soil and deeper vadose zone soils by providing Information
    on fate and behavior of organic constituents at a specific
    contaminated site. Treatability studies can be conducted in
    laboratory microcosms, at pilot scale facilities, or in the field.
    To determine whether a specific site is suitable for
    bioremedlation, information from treatabflity studies is
    combined with Information concerning site and waste
    characteristics in order to determine potential applications
    and limitations of the technology. Ultimate limitations to the
    use of bloremediatlon at a specific site are usually related
    to: (1) time required for cleanup. (2) level of cleanup
    attainable, and (3) cost of cleanup using bioremediation.
    
    Information from treatability studies also is used to prepare
    an approach to the engineering design and implementation
    of a bioremediation system at a specific site. An
    engineering design to accomplish bioremediation at the site
    is generally based upon information from simulations (e.g.,
    mathematical modeling) or estimates of pathways of
    migration of chemicals. These simulations or estimates are
      Table 4. Materials Balances and Mineralization
      Approach** to Blodagradatlon Aaa**am*nt
      Biodegradation Approach    Process Examined
      Materials balances
      Mineralization
    Recovery ol parent compound
    in the air, soil water, soil
    solids (extractable)
    
    Recovery ol transformation
    products in the air, soil
    water, and soil solids
    (extractable)
    
    Production of carbon dioxide,
    and/ or methane from the
    parent compound
    
    Release of substituent groups,
    e.g., chloride or  bromide ions
    generated from treatability data and site/soil charac-
    terization data in order to: (1) determine containment
    requirements to prevent contamination of off-site receiver
    systems; (2) develop techniques to maximize mass transfer
    of chemicals affecting microorganism activity (addition of
    mineral nutrients, oxygen, additional energy sources, pH
    control products, etc.; removal of toxic products) in order to
    enhance bioremediation; and (3) design a cost-effective and
    efficient monitoring program to evaluate effectiveness of
    treatment.
    
    During the performance of a treatability study, biodegrada-
    tion, detoxification,  and  partitioning (immobilization)
    processes are evaluated as they affect the fate and
    behavior of organic constituents In the soil.
    
    To assess the potential  for biological degradation at a
    specific contaminated site, the use of treatability studies
    incorporating  materials balance and mineralization
    approaches to determine the environmental fate and
    behavior of the constituents in the specific soil is  recom-
    mended (Table 4). Rate of degradation Is calculated by
    measuring the loss of parent compound and the production
    of carbon dioxide with time of treatment. Degradation rate
    is often reported as half-life, which represents the time
    required for 50 percent of the compound to disappear
    based upon a first-order kinetic model.
    
    Calculation of the rate of decrease of parent compound,
    however, by itself does not provide complete Information
    concerning mechanisms and pathways by which organic
    constituents are interacting with the soil environment [24]
    Further information is necessary to understand whether a
    constituent is simply transferred from one phase (e.g., solid
    phase) to another (e.g., air phase) through a process of
    interphase transfer, or is chemically altered so that the
                                                          7-76
    

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                           Effluwt Purge Gl*
    Figure 3. Laboratory Flask Apparatus Used for Mass Balance
    Measurements.
    properties of the parent compound are destroyed.
    Evaluation of the fate of a constituent in a soil therefore also
    requires identification and measurement of the distribution
    of the constituent among the physical phases that comprise
    the system as well as differentiation of the mechanisms by
    which constituent may be chemically altered in a soil
    system.
    
    A laboratory flask apparatus that can be used as a
    microcosm to measure interphase transfer and
    biodegradation potential in a laboratory treatability study is
    illustrated in  Figure 3. The contaminated soil material is
    placed in a flask, which is then closed and incubated under
    controlled conditions for a period of time. During the
    incubation period, air is drawn through the flask and then
    through a sorbent material.  Volatilized materials are
    collected by the sorbent and are measured to provide an
    estimate  of volatilization loss of the constituents of interest.
    At the end of the incubation period, a portion of the
    contaminated soil is treated with an extracting solution to
    determine the extent of loss of the constituents in the soil
    matrix. This loss can be attributed to biodegradation and
    possible immobilization in the soil materials.  Selection of an
    appropriate extracting solution is necessary to maximize
    constituent recovery from the soil. Another portion of the
    soil is leached with water to determine leaching potential of
    remaining constituents. Abiotic processes involved in
    removal of the parent compound are also evaluated by
    comparing microbially active soil/waste mixtures with
    mixtures  that have been treated with a microbial poison,
    e.g., mercunc chloride or propylene oxide. The use of a
    procedure incorporating features illustrated by the use of
    this microcosm  is crucial in order to obtain a materials
    balance of waste constituents in the soil system. Examples
    of such protocols may be found in [14, 24, 25, 26]. A
    certain amount  of material is added to the soil, and tracking
    the fate of the material as it moves through the multiple
    phases of the soil system provides a materials balance.
    Transformation refers to the partial alteration of hazardous
    constituents into intermediate products. Intermediate
    products may be less toxic or more toxic than the parent
    compound, and therefore the rate and extent of
    detoxification of the contaminated material should be
    evaluated. Samples generated from the different phases of
    the soil system in the microcosm studies can be analyzed
    for intermediate degradation products and used In
    bioassay studies to provide information concerning
    transformation and detoxification processes.
    
    Bioassays to quantify toxicity measure the effect of a
    chemical on a test species under specified test conditions
    [14]. The toxicity of a chemical is proportional to the
    severity of the chemical on the monitored response of the
    test organism(s). Toxicity assays utilize test species that
    include rats, fish, invertebrates, microorganisms, and
    seeds. The assays may utilize single or multiple species of
    test organisms. The use of a single bioassay procedure
    does not provide a comprehensive evaluation of the
    toxicity of a chemical in the soil/organic chemical-impacted
    system. Often  a battery of bioassays is utilized that may
    include measurements of effects on general microbial
    activity (e.g., respiration, dehydrogenase activity) as well
    as assays relating to activity of subgroups of the microbial
    community (e.g., nitrification, nitrogen fixation, cellulose
    decomposition). Bioassays utilizing organisms from
    different ecological trophic levels may also be used to
    determine toxicological effects. However, use of a single
    assay as a screening test to identify relative toxicity
    reduction in the environment is a common procedure
    employed in treatability studies. Assays using
    microorganisms are often used due to their speed,
    simplicity, ease in handling, cost effectiveness, and use of
    a statistically significant number of test organisms that is
    required to detect the effects of potentially toxic materials
    in the environment [27,28].
    
    Two microbial bioassays that have been used to evaluate
    toxicity of wastes in soil systems are the Ames Salmonella
    typhimurium mammalian  microsome assay and the
    Microtox™ test system. The Ames assay is a measure of
    the mutagenic potential of hazardous compounds [29. 30]
    and has been widely used to evaluate environmental
    samples [31, 32, 33, 34, 35]. A high correlation has been
    shown between carcinogenicity and mutagenicity. where
    about 90% of known carcinogens tested mutagenic in the
    Ames assay [36]. Special strains of Salmonella
    typhimurium that require histidine to grow are used to test
    for mutagenicity. When plated on a histidine-free medium,
    the only bacteria able to form colonies are those that have
    reverted to the "wild" state and are able to produce their
    own histidine.  Without the addition of test chemicals, this
    back mutation occurs at a rate specific to each strain type
    (spontaneous reversion rate). The addition of chemicals
    that are mutagenic increases the reversion rate. Several
    dose levels of a chemical, mixture of chemicals, or an
    environmental sample are added to obtain a dose
    response. Some mutagens act directly on the bacterial
    cells while others require activation by mammalian
                                                              7-77
    

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     mterosomes. These mterosomes are generally obtained
     from liver extracts of Aroclor 1254-lnduced rats (I.e., rats
     injected with the polychlorinated biphenyl (PCB), Aroclor
     1254). The extract, referred to as the S-9 fraction, contains
     enzymes that metabolically convert certain chemicals to
     active mutagens. simulating the activity that occurs In living
     mammalian systems. Several strains of Salmonella
     typhimurium have been developed in order to detect
     different types of mutagens. The recommended strains for
     general mutagenictty testing Include TA97, TA98, TA100,
     TA102. TA97 and TA98 detect frameshlft mutagens.
     TA100 detects mutagens causing base-pair substitutions,
     while TA102 detects a variety of mutagens not detected by
     the other strains.
    
     The Microtox™ assay is an aqueous general toxteity assay
     that measures the reduction in light output produced by a
     suspension of marine luminescent bacteria in response to
     an environmental sample [37].  Bioluminescence of the  test
     organism depends on a complex chain of biochemical
     reactions. Chemical inhibition of any of the biochemical
     reactions causes a reduction in bacterial luminescence.
     Therefore, the Microtox™ test considers the physiological
     effect of a toxicant and not just mortality. Matthews and
     Bulich [38] have described a method of using the
     Microtox™ assay to predict the land treatability of
     hazardous organic wastes. Matthews and Hastings [39]
     described a method using the Microtox™ assay to
     determine an appropriate range of waste application
     loading for soil-based treatment systems. Symons and
     Sims [40] utilized the assay to assess the detoxification of
     a complex petroleum waste in a soil environment.  The
     assay was also included as a recommended bioassay in
     the U.S. EPA Permit Guidance Manual on Hazardous
     Waste Land  Treatment Demonstrations [25].
    
     Immobilization refers to extent of retardation of the
     downward transport (leaching potential) and upward
     transport (volatilization potential) of waste constituents.
     Interphase transfer potential  for waste constituents among
     soil, oil (waste), water, air,  and solid (organic and inorganic)
     phases is affected by the relative affinity of the waste
     constituents for each phase,  and may be quantified through
     calculation of partition coefficients [25]. Partition
     coefficients are calculated js the ratio of the concentration
     of a chemical in the soil, oil, or air phase to the
    concentration of a chemical in the water phase, and are
     expressed as Ko (oil/water), Kh (air/water), and Kd (solid/
     water). Calculation of retardation factors (Equations 9 and
     10) also may be used to predict immobilization of
    constituents in a soil system  [22, 41].
    
     Either laboratory microcosm, pilot scale reactors, or field
    plots may be used to generate treatability data. The set of
    experimental conditions, e.g., temperature, moisture, waste
    concentration, etc., under which the studies were
    conducted should be presented along with experimental
     results.
    
    Treatability study results provide information relating to
     rates and extent of treatment of hazardous organic
     constituents when mass transfer rates of potential limiting
     substances are not limiting the treatment. Treatability
     studies usually represent optimum conditions with respect to
     mixing, contact of soil solid materials with waste constituents
     and with microorganisms, and homogeneous conditions
     throughout the microcosm. Therefore, treatability studies
     provide Information concerning potential levels of treatment
     achievable at a specific site. Under field conditions, the rate
     and extent of bioremediation is generally limited by
     accessibility and rate of mass transfer of chemical
     substances (oxygen, nutrients, etc.) to the contaminated soil
     as well as by mass transfer of the contaminants to the
     microbial population and removal of microbial degradation
     products.
    6.   Integration of Information
    from Site  Characterization
    and  Treatability Studies
    Information from the performance of site characterization
    and treatability studies may be integrated with the use of
    comprehensive mathematical modeling. In general, models
    are used to analyze the behavior of an environmental
    system under both current (or past) conditions and
    anticipated (or future) conditions [42]. A mathematical model
    provides a tool for integrating degradation and partitioning
    processes with site/soil- and waste-specific characterization
    for simulating the behavior of organic constituents in a
    contaminated soil and for predicting the pathways of
    migration through the contaminated area, and therefore
    pathways of exposure to humans and to the environment.
    Models may also be used to approximate and estimate the
    rates and extent of treatment that may be expected at the
    field scale under varying conditions. DiGiulio and Suffet [43]
    have presented guidance on the selection of appropriate
    vadose zone models for site-specific applications, focusing
    on recognition of limitations of process descriptions of
    models and difficulties in obtaining input parameters
    required by these process descriptions.
    
    The Regulatory and Investigative Treatment Zone Model
    (RITZ Model, developed at the U.S. EPA Robert S.  Kerr
    Environmental Research Laboratory by Short [44]) is an
    example  of a model that has been used to describe the
    potential fate and behavior of organic constituents in a
    contaminated soil system [45]. The Ritz Model is based on
    an approach by Jury [46]. An expanded version of RITZ. the
    Vadose Zone Interactive Processes (VIP) model,
    incorporates predictive capabilities for the dynamic behavior
    of organic constituents in unsaturated soil systems under
    conditions of variable precipitation, temperature, and waste
    loadings [25, 47, 48,  49, 50].  Both models simulate vadose
    zone processes, including volatilization, degradation,
    sorption/desorption, advection, and dispersion [51].
                                                       7-78
    

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     One* interphase transfer potential and pathways of escape
     have been Identified by treatablllty studies and simulation
     modeling, containment requirements for the constituents of
     interest at the site can be determined. If the major pathway
     of transport is volatilization, containment with respect to
     volatilization control to required. An inflatable plastic dome
     erected over a contaminated site to a containment method
     that has been used to control escape of volatile
     constituents. Volatile* are drawn from the dome through a
     conduit and treated In an above ground treatment system. If
     leaching has been Identified as Important, control of soil
     water movement should be Implemented. For example, if
     contaminated materials are expected to leach downward
     from the site, the contaminated materials can be
     temporarily removed from the site, and a plastic or clay liner
     placed under the site. When downward, as well as upward,
     migration Is significant, both volatilization and leaching
     containment systems can be Installed. Some hydrophobia
     chemicals do not tend to volatilize or to leach but are
     persistent within the soil solid phase; therefore, containment
     efforts may not be required.
    
     A critical and cost-effective use of modeling to in the
     analysis of proposed or alternative future conditions, I.e.,
     the model to used as a management or decision-making
     tool to help answer "what If" type questions [42]. Attempting
     to answer such questions through data collection programs
     would be expensive and practically impossible In many
     situations. For example, information can be generated to
     evaluate the effects of using different approaches for
     enhancing microblal activity and for accelerating
     biodegradatton and detoxification of the contaminated area
     by altering environmental conditions that affect mfcrobial
     activity.
    
     Results of modeling also can aid in the identification of
     constituents that will require treatment in the air (volatile)
     phase, in the leachate phase, and in the solid (soil) phase.
     Monitoring efforts therefore can be concentrated on
     monitoring the appropriate environmental phase to evaluate
     treatment effectiveness. If a comprehensive and thorough
     evaluation of a specific contaminated system has been
     conducted,  not all chemicals need to be monitored In each
     phase.
    7.   Potential Applications
    and Limitations  of
    Bioremediation Technology
    Existing Information for constituents of interest at a specific
    site/soil contaminated system should be collected as a first
    step in the Investigation of the application of bloremedlation
    as a potential treatment technology. Many organic
    constituents from a wide range of chemical classes have
    been shown to be amenable to blodegradatlon In laboratory
     studies, using both single strains of microblal species or
     consortla of microblal populations. Blodegradatlon has also
     been demonstrated in both aqueous cultures or soil
     microcosm studies. A summary of biodegradation and
     disappearance rates lor almost 300 chemicals has been
     prepared by Oragun [20]. Examples of specific chemical
     classes shown to be biodegradable include: amines and
     alcohols [14]; polycyclic aromatic hydrocarbons (PAHs) [5,
     12,13, 52, 53]; chlorinated and non-chlorinated phenols
     [14]; chlorinated aromatic hydrocarbons [54];
     polychlorinated biphenyls (PCBs) [55], halogenated aliphatic
     compounds [50.57]; pesticides [13.47, 58, 59.60.61]; and
     various hazardous substances [13, 62].  Industrial wastes
     from petroleum refining, wood preserving, leather tanning.
     coal gasification/liquefaction, food processing, pulp and
     paper manufacturing, organic chemical production, animal
     production, munitions production, textile manufacturing,
     pesticide manufacturing, and pharmaceutical
     manufacturing, as well as municipal wastewaters. sludges,
     and septage from septic tanks, have all been successfully
     treated in land treatment systems [14,20].
    
     RSKERL, as part of its responsibilities to manage research
     programs to determine the fate, transport, and
     transformation rates of pollutants in the soil, the
     unsaturated and the saturated zones of the subsurface
     environment. Initiated a research program to develop
     comprehensive screening data on the treatabillty  in soil of
     specific listed hazardous organic chemicals and specific
     listed hazardous wastes. Research results have been
     presented by Sims et al. [13], Loehr [14], and McGinnis et
     al. [5]. A Soil Transport and Fate (STF) Data Base was
     also developed for RSKERL [63]. The Data Base  contains
     quantitative and qualitative information on degradation,
     transformation, partitioning among the soil phases, and
     toxicity of hazardous organic constituents in soil systems. It
     may be used as a tool for contaminated site assessment
     and remediation activities. The Data Base provides input
    data concerning degradation rates, partition coefficients.
    and chemical property data for mathematical models
    simulating the behavior and fate of chemical constituents in
    contaminated surface and subsurface soils. The information
    is also useful for providing assistance In determining
    treatment potential at contaminated sites using In situ
    techniques. Chemicals may be evaluated with respect to
    the importance of natural processes in controlling
    persistence and transport potential, and therefore, the
    susceptibility to degradation or retardation within a
    subsurface environment.
    
    A report was prepared for the  U.S. EPA evaluating the
    effectiveness of soil treatment practices at Superiund sites.
    EPA Office of Research and Development tests,
    Department of Defense and Department of Energy studies.
    state remediation efforts, private party studies, and vendor
    demonstrations [64, 65]. Bioremediation was shown  to
    successfully treat many non-halogenated compounds, but
    was less successful with halogenated compounds.
    Removal  efficiencies for non-halogenated aromatics.
    heterocyclics and other polar compounds were greater than
    95%. Halogenated aliphatic compounds were also
                                                       7-79
    

    -------
    successfully treated, with removal efficiencies averaging
    98%; however, volatilization may have contributed to
    observed losses. More complex halogenated and nitrated
    compounds exhibited lower removal efficiencies, ranging
    from 50 to 85%.
    
    Even though a specific organic constituent has been shown
    to biodegrade under laboratory conditions, whether or not It
    will degrade In a specific soil/site system is dependent on
    many factors [54]. Potential degradablllty requires
    Investigation in site-specific treatabillty studies. Available
    oxygen may be limiting in some cases, while other
    compounds may require the presence of anaerobic
    conditions.  Other environmental conditions that may place
    restrictions on biological activity Include pH, temperature,
    and moisture. Upon exposure to the soil environment, the
    constituent may be biologically or chemically altered so as
    to be rendered persistent and/or toxic in the environment
    
    The system may lack other nutrients required for mlcrobial
    activity. Other chemicals present may serve as preferred
    substrates, or act to repress required enzyme activities.
    High concentrations of metal salts may be Inhibitory or toxic
    to many microorganisms.
    
    Most chemicals require the presence of a consortium of
    mterobial species for mineralization, some of which may not
    be present  at the specific site. Also, most organisms require
    a period of  acclimation to the constituent before metabolism
    occurs. During this period, the level of constituent must be
    high enough to promote acclimation without being toxic or
                                Inhbttory. Prior exposure to the constituent or similar
                                constituents may help to shorten the acclimation period.
                                8.   Example  of Bioremed-
                                iation Potential  for
                                Polycyclic Aromatic
                                Hydrocarbons (PAHs) in
                                a Soil System
                                To demonstrate the potential effectiveness of
                                bioremediation, results are presented for the semi-volatile
                                chemical class of compounds known as the polycycllc
                                aromatic hydrocarbons (PAHs). These compounds are of
                                environmental significance because of their recalcitrance
                                to biological degradation, their chronic toxic effects on
                                humans, and their widespread occurrence at contaminated
                                waste sites. Specifically, PAH compounds are associated
                                with oily wastes, such as wastes from petroleum refining
                                operations and wastes from the wood preserving industry.
                                The higher molecular weight PAH compounds are of
                                special concern, because they exhibit mutagente,
                                carcinogenic, and teratogenic potential.
              Tabte S. Degradation of PAHs Prawn! In a Complex Oily Waste, Applied at 2% Oil and Great*
              hi Clay Loam SoH [68]
                                                                        09% Confidence Interval (L_)
                                                                                 (days)
              Compound
    C°L.
    MO/Q
                               Lower
                                 Upper
              Fluor-
              Pyrane
    351
    
    283
    15
    
    32
    0.966
    
    0.884
    13
    
    26
    18
    
    41
    Benzo(a)
    anthracene
    Benzo(gth,
    QperykHw
    Indeno-
    pyren«
    *co '
    86 130
    8 1661
    5 60
    Initial Concentration
    0.397 87
    0.006 139
    0.550 43
    
    347
    NO
    130
    
                             Half-Hie (first order Unetfca)
                                                    7-80
    

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       Tables.  Effect of Manure and pH Amendmenta on
               PAH Degradation In a Complex Waete
               Incorporated Into Soil [67]
                          Half-Life in Waste/Soil Mixture (daya)
    PAH Compound
    Aeenaprrthytene
    Acenaphthene
    Ruorene
    Phenanthrene
    Anthracene
    Fluoranthene
    Pyrene
    Benz(a)anthraoene
    Chrysene
    Benzo(b)fluoranthene
    Benzojkjfluoranthene
    Benzo(a)pyrene
    benzo(ghj)p8rylene
    Dibenz(a,h)anthracene
    lndeno< 1 ,2.3-cd)pyrene
    Without
    Amendments
    78
    96
    64
    69
    28
    104
    73
    123
    70
    85
    143
    91
    74
    179
    57
    With
    Amendments
    14
    45
    39
    23
    17
    29
    27
    52
    42
    65
    74
    69
    42
    70
    42
      Table 7. Effect of Soil Molature 01 PAH Degradation [67]
                         Half-life in Waste/Soil Mixture (Days)
      Moisture
    Anthra-
     cene
    Phenan-
     threne
    Fluoran-
     thene
      20-40% field capacity     43        61       559
    
      60-60% field capacity     37        54       231
    The degradation of PAH compounds in soils has been
    demonstrated in laboratory treatabilrty studies [66].  The
    results presented in Table 5 (or PAH compounds present
    in a complex oily waste show that the half-lives for four of
    the live compounds ranged from only 15 to 139 days.
    However, the half-life for benzo(g,h,i)perylene, a higher
    molecular weight PAH compound, was still quite long
    (1661 days). McGinnis et al. [5] in a laboratory soil
    treatability study of PAH compounds present in creosote
    waste sludges also found that degradation of PAH was
    dependent on molecular weight and number of aromatic
    rings. PAHs with two rings generally exhibited half-lives
    less than ten days, while three- ring compounds in most
    cases exhibited longer half-lives, which were usually less
    than one hundred days. Most of the four- or five-ring PAHs
    exhibited half lives of one hundred days or more. The
    results of these two studies suggest that means of
    enhancing biological degradation of more recalcitrant PAH
    compounds should be investigated.
    
    When additional carbon and energy sources were provided
    and soil pH was adjusted from 6.1  to 7.5. the half-lives of
    PAH waste constituents present In a complex fossil fuel
    waste added to a soil were decreased, as shown In Table 6
    [67]. In this laboratory study using first-order kinetic
    modeling of degradation, the use of manure as an
    amendment and control of soil pH significantly decreased
    the t - of the PAH constituents studied. For example, the
    half-life of phenanthrene decreased from 69 to 23 days,
    benz(a)anthracene from 123 to 52 days, and benz(a)pyrene
    from 91 to 69 days.
    
    The control of soil moisture also resulted in enhanced
    biodegradation of PAHs. as shown in Table 7 [67]. Soil
    moisture in this study was described In terms of percent of
    field capacity. Field capacity is defined as the percentage
    of soil moisture remaining in a soH after having been
    saturated and after free drainage has practically ceased.
    Therefore, soils with moisture levels of 60 to 80% of field
    capacity are wetter than soils with levels of 20 to 40% of
    field capacity. At higher levels of soil moisture, the half-life
    of the PAH constituents studied decreased.  For example,
    for fluoranthene, the half-life decreased from 559 days to
    231 days. At a specific site where containment has been
    achieved, the addition and control of soil moisture may be a
    tool to accomplish faster degradation of the constituents.
    
    An increase in soil temperature also can decrease the time
    required to accomplish degradation, especially the loss of
    lower molecular weight PAHs [68]. In a laboratory study.
    for example, the half-life of fluorene decreased from 60
    days to 47 days to 32 days at 10°. 20°. and 30° C,
    respectively (Table 8). At a field site, soil temperature may
    be difficult to control.  However, if a cover is used at the site
    to control the release of volatile materials, an increase in
    soil temperature may also occur. Seasonal climatic changes
    will affect the rate of degradation of organic constituents, as
    well as geographical location of a specific contaminated
    site.
    
    If a soil has been exposed previously to similar or the same
    type of contamination, the soil microbial population may
    have become acclimated to the waste, and waste
    degradation may occur at a faster rate. In a laboratory
    study investigating the acclimation of a soil to a fossil fuel
    waste, a greater reduction in concentration of all the waste
    PAH compounds studied was achieved in 22 days in an
    acclimated soil, compared to the reduction seen  in 40 days
    in an unacclimated soil (Table 9) [67].  These results show
    that at a site that has been contaminated for a period of
    time, the indigenous microbial population may become
    acclimated to the presence of wastes, and techniques to
    stimulate microbial activity may produce significant
    degradation.  Mixing of a small amount of a contaminated
    soil that has developed an acclimated population with the
                                                      7-8J
    

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    Table 8.  Percentages of PAH Remaining at the End of the 240 Day Study Period and
             Eatlmat*d Apparent Lota Half UVM [68]
             Compound
             Percent of PAH
              Remaining
    10-C     20*C     30*C
    10*C
    Estimated Half Lite (day)'
            20-C
    30*C
    Acenaphthene
    Fluorene
    Phenanthrene
    Anthracene
    Fluoranthene
    Pyrene
    Benz(a)anthraoene
    Chrysene
    Benzo
    -------
    contaminated soil to be treated may also result In faster
    cleanup of a site. Amendment of the soil with exogenous
    microorganisms developed In laboratory batch cultures
    wouid not be required.
    
    One method to assess detoxification of waste constituents
    In a soil system involves use of the Microtox™ assay [38].
    The assay Is used to measure acute toxicity of aqueous
    solutions or water soluble fraction extracts. The Microtox™
    system Is a standardized instrumental-based system that
    utilizes a suspension of marine luminescent bacteria
    (Photobactarium phosphoreum) as bioassay organisms.
    The bioassay organisms are handled like chemical
    reagents. Suspensions of about one million bacteria are
                     Nunn clay loam
    ff
    8
                   Kidman sandy loam
            e   ae   «o    to   no  ito  ite
                             4b
    Figure 4. ECSO aa a Function of Tim* for Two Soil* and Thrae
    Waata Loading Ratea
    "challenged" with additions of serial dilutions of an aqueous
    sample or extract. Light output from each bacterial
    suspension is measured before and after each addition of
    sample. Results are presented as ECSO values, which are
    defined as sample concentrations resulting in a 50%
    decrease of light produced by the luminescent bacteria. High
    ECSO values indicate lower toxicity than low values.
    Detoxification of a contaminated soil system is indicated by
    increased Microtox™ ECSO values approaching  100%. A
    value of 100% is considered as non-toxic.
    In a clay loam soil, a petroleum refinery waste was added to
    soil at application rates of 2%, 4%, and 8% by weight of oil
    and grease [40], The results of the study are shown in Figure
    4. Time of incubation is plotted on the x-axis, and ECSO
    values, as determined by the Microtox™ assay.on the y-axls.
    At the 2% loading rate, the waste material was detoxified to
    an ECSO value of 100  in  a period of about 100 days (Figure
    4a).  At the highest level  of contamination (8% loading rate).
    the materials remained toxic, even after 180 days. In addition
    to providing evidence of detoxification of waste constituents,
    this study also showed the potential for enhancement of
    biodegradation by mixing uncontaminated soil with
    contaminated soil to produce a treatment medium with waste
    contents at levels not toxic to microblal populations.
    
    In a sandy loam soil amended with the same contaminated
    material, a longer period (about 170 days) was required to
    detoxify the 2% contamination level to an ECSO value of
    100% (Figure 4b). Results of these studies show that mixing
    of contaminated soils with uncontaminated soils can result in
    detoxification. However, since the rate of detoxification may
    be a function of soil type, these results also illustrate the site
    specificity of bioremediation efforts and underscore the need
    to perform site-specific characterization of the contaminated
    area.
    Another technique to assess  detoxification of organic
    constituents in a soil system is the use of the Ames
    Salmonella typhimurium  assay [29, 30, 52]. The assay
    utilizes the bacterium S.  typhimurium to indicate the
    presence of mutagenlc constituents, which may include
    m.o 	
    " ""
    000 1000 9000
    Dowlwg/pleM)
    .—*
    
    4000
    Figure 5.  Ames Assay Reaulta for Waate; Soil Mixture
    Immediately Attar Waata Incorporation Into Soil [87]
                                                      7-83
    

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              COO   2000   3000   4000    MOO   «000   1000   tCOO
      Flgur* 6. Aims AMay Result* tor W««t«; Soil Mixture After
      Forty-two Day* Incubation [67]
     transformation products of parent compounds. Different
     strains of S. typhimurium are selected to indicate the
     mechanism of mutagenicity. i.e., point mutations or frame-
     shift mutations. Mutagenicity is measured as a ratio of the
     number of colonies that grow in the presence of a test
     sample (e.g., chemical, mixture of chemicals, or extract of
     an environmental sample) to the number of colonies in the
     absence of the test sample.  Since growth occurs in
     proportion to mutagenic potential, growth will be greater In
     the presence of a mutagen, and will increase as the dose of
     mutagen is increased. The increase in growth In response
     to dose Is depicted graphically in dose-response curves.
     The minimum mutagenic ratio (ratio of number of colonies
     that form in the presence of  a test sample to the number of
     colonies on a control growth plate) is 2.0.  Therefore, a
     sample exhibiting a mutagenic ratio greater than 2.0 Is
     considered to possess mutagenic properties.
    
     A study to evaluate detoxification of mutagenic potential of
     a complex fossil fuel waste containing PAH compounds
    -treated In a soil system was conducted utilizing the Ames
     assay [67],  Mutagenic ratios for 5. lyphimuiium strain  TA98
     (a test strain used to detect frameshlft mutagens such as
     PAHs) with metabolic activation (to simulate mammalian
     metabolism by the addition of a mammalian liver extract
     (referred to as the 89 fraction)), and without metabolic
     activation (without the addition of the 89 fraction) were
     determined immediately after waste incorporation and after
     42 days of incubation of the waste in the soil. Results as
     shown in dose response curves showed that the mutagenic
     ratios decreased from about 4.5 and 7.0 at the highest dose
     levels tested immediately after waste incorporation (Figure
     5) to borderline mutagenic levels (i.e., mutagenic ratlos'of
     about 2) after 42 days of treatment (Figure 6). For a
     different S. typhimurium strain, (TA100. a test strain used to
     detect mutagens causing base-pair substitutions), no dose-
     response effects or mutagenic activity were measured
     during the study.
    
     Results of a pilot scale field study have also demonstrated
     that bioremediation of PAH contaminated soils is a
     technology that can result in significant cleanup of
     contaminated soils [69]. A coal gasification waste was
     thoroughly mixed into a soil at a one-half acre site.
     Sampling of soil cores was performed at 10 feet intervals
     across 100 feet rows. Data presented In Table 10 are
     composite values from the sampling efforts. In all cases,
     concentrations of the PAH compounds in the  soil were
     greatly reduced after 91  days. Data quality was poorer at
     the 91 -day sampling period, as measured by  the coefficient
     of variation (CV), which Is the mean value measured (AVQ)
     divided by the standard deviation (SD). The poorer data
     quality was attributed to  increased analytical difficulties
     when levels of constituents near detection limits are
     measured.
    
     The fate and environmental impact of transformation
     products is an area of bioremediation that needs more
     consideration. In a laboratory study, the transformation of a
     14C radio-labelled PAH compound. 7,12-dlmethylbenz(a)-
     anthracene,  in a sandy loam soil was investigated for a  28-
     day incubation period [70]. At time 0, 62% of  the applied
     parent compound was recovered from the soil, which
     represents the extraction efficiency of the test (Table 11).
     After 28 days of incubation, only 20% of the parent
     compound was recovered. Since recoveries in control
     reactors poisoned with mercuric chloride were not
     significantly different over the 28-day incubation period,
     biological treatment was the proposed mechanism of
     compound removal from the soil system. Table 11 also
     shows that the decrease In parent "C was accompanied by
     an increase in the metabolite "C fraction. The appearance
     of transformation products increased from 4% of the total
     "C applied at time 0 to 53% after 28 days. None of the
     radiolabelled carbon appeared as CO, in this study, but  12
     to 17% of the radiolabelled material was associated with the
     solid phase of the soil during the Incubation period. The
     mass balance for the study ranged from 78 to 90%
     recovery of the applied radiolabelled carbon. Therefore,  the
     appearance, toxiclty, fate, and behavior of a metabolite
    fraction may need to be evaluated on a site-specific basis.
    
    The  environmental significance and fate and behavior of
     many transformation products of PAH constituents, as well
    as transformation products from many other organic
    constituents, are not yet Known.  Therefore, incorporating
    detoxification assessment into a bioremediation plan is
     recommended to evaluate these concerns.
                                                        7-84
    

    -------
    Table 10. FMd RewHa tor Soil Treatment of PAH> In Cod Gasification Wastes [69]
    Compound
    
    Naphftiatene
    Acenaphthene
    
    Phena/ioireot
    Benz(a)
    anthracene
    Dibenz(a,h)
    anthracene
    C0*(pfl/0) C After 91 days (pg/g)
    AVG
    188
    729
    78
    86
    52
    SO
    68
    276
    28
    42
    36
    . CV(%)
    37
    38
    36
    49
    69
    AVG SO
    3 1.8
    1 1.8
    2.6 0.6
    2 0.8
    NO
    CV(%)
    61
    157
    23
    38
    -
                    Initial SOD Concentraton
      Table 11. Transformation* of ("C) OMB A by McUurln Sandy Loam Soil* [70]
    "C appearing in each fraction, percent
    Time.
    days
    0
    14
    28
    Soil extract
    DMBA.
    parent compound Metabolites
    62(69} 4(6)
    26 43
    20(60) 53(11)
    Soil
    Residue CO,
    12(13) 0(0)
    16 0
    17(16) 0(0)
    Total
    78(88)
    85
    90(87)
      * Poisoned (control) data in parentheses.
                                            7-85
    

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                 Table 12.  Wood Preserving 8HM Where Btoremedlatton has been PropoMd
                 for Soil or Lagoon Sediments [71]
                         Site Name
    Stale (U. S. EPA Region)
    Proposed Remediation
    LA. Clark and Son
    Brown Wood Preserving
    Burlington Northern
    (Brainard)
    North Cavalcade Street
    United Creosoting Company
    Baxter/Union Pacific
    Burlington Not (twin
    Somera)
    Ubby (Champion
    International)
    Koppers, Co.
    J.H. Baxter
    VA (III)
    FL(IV)
    MN(V)
    TX(VI)
    TX(VI)
    WY (VIII)
    MT(VIII)
    MT(VIII)
    CA(IX)
    CA (IX)
    Pl/\f*Mw» nrtl nttnft
    PKXBmOOiaDOn
    OirnMnai rnJl^tl«»«»
    DNXOffmllallOn
    1 it ft fit mm i^
    Lanawin
    Bioremedlabon
    in snu remediation
    Bkxemediatton
    Landfarm
    in snu noremediaoon
    and Landfarm
    Bioremeoiation
    Dnremeduuion
    9.   Implementation of
    Bioremediation  at Sites
    Contaminated with Organic
    Wastes
    A recent survey conducted for the U.S. EPA concerning the
    use of bioremediation at sites with soils contaminated with
    wood-preserving wastes identified ten sites that currently
    plan to use bioremediation techniques to cleanup
    contaminated soils and sediments (Table 12) [71]. Sims
    observed a wide range of variability in target clean-up
    levels. A wide variability also was observed in criteria for
    selecting target levels (maximum contaminant levels
    (MCLs) based on drinking water standards vs. negotiated
    levels vs. risk assessment-based levels) and in selection of
    soil phases that must meet target levels (solid phase,
    teachate phase, and/or air phase). Target levels were
    determined on a  site-specific basis.
    
    An example of a  bioremediation plan for a facility identified
    in the survey was presented by Lynch and Genes [72}. On-
    site treatment of  creosote-contaminated soils from a
    shallow, unlined surface impoundment was demonstrated
    at a disposal facility for a wood-preserving operation in
    Minnesota. The contaminated soils contained creosote
    constituents consisting primarily of PAHs at concentrations
    ranging from 1,000 to 10,000 ppm.  Prior to implementation
    of the full scale treatment operation, bench-scale and
    pilotscale studies simulating proposed full-scale conditions
    were conducted to define operation and design
    parameters. Over a four-month period, 62% to 80%
    removal of total PAHs were achieved in all test plots and
              laboratory reactors. Two-ring PAH compounds were
              reduced by 80-90%, 3-ring PAHs by 82-93%, and 4+-ring
              PAHs by 21-60%.
    
              The full-scale system involved preparation of a treatment
              area within the confines of the existing impoundment. A
              lined waste pile for temporary storage of the sludge and
              contaminated soil from the Impoundment was constructed.
              All standing water from the impoundment was removed,
              and the sludges were excavated and segregated for
              subsequent free oil recovery. Three to five feet of "visibly"
              contaminated soil was excavated and stored in the lined
              waste pile. The bottom of the impoundment was stabilized
              as a base for the treatment area. The treatment area was
              constructed by installation of a polyethylene liner, a
              leachate collection system, four feet of clean backfill, and
              addition of manure to achieve a carbon.-nitrogen ratio of
              50:1.  A sump for collection of stormwater and leachate
              and a center pivot irrigation system were also installed.
              The lined treatment area was required because the natural
              soils at the site were highly permeable. A cap was also
              needed for residual contaminants left in place below the
              liner.  Contaminated soil was periodically applied to the
              treatment facility and roto-ttlled into the treatment soil. Soil
              moisture was maintained near field capacity with the
              irrigation system.  During the first year of operation,
              greater than 95%  reductions in concentration were
              obtained for 2- and 3-ring PAHs. Greater than 70% of 4-
              and 5-nng PAH compounds were degraded during the first
              year. Companson of half-lives of PAHs in the full-scale
              facility were in the low end of the range of half-lives
              reported for the test plot units.  Only two PAH compounds
              were detected in drain tile water samples, at
              concentrations near analytical detection limits. -
    
              Bioremediation of a Texas oil field site with storage pit
              backfill soils contaminated with styrene, still bottom tars,
                                                      7-86
    

    -------
     and chlorinated hydrocarbon solvents was demonstrated on
     a pilot scale [73]. The remediation efforts also Included
     chemical and physical treatment strategies. The pilot scale.
     solid-phase biological treatment facility consisted of a
     plastic film greenhouse enclosure, a lined soil treatment bed
     with an underdrain, an overhead spray system for
     distributing water, nutrients, and inocula, an organic vapor
     control system consisting of activated carbon absorbers,
     and a fermentation vessel for preparing microbial inoculum
     or treating contaminated leachate from the backfill soils.
     Soils  were excavated from the contaminated area and
     transferred to the treatment facility. Average concentrations
     of volatile organic compounds  (VOCs) were reduced by
     more than 99% during the 94 day period of operation of the
     facility; most of the removal was attributed to air stripping.
     Biodegradation of semivolatile compounds reduced aver-
     age concentrations by 89% during the treatment period.
    
     A solid-phase treatment system to remediate petroleum
     contaminated soil at a hazardous waste site in California
     was described by Ross et al. [6]. The treatment process
     involved stimulating the existing microbial population in the
     soil to degrade petroleum hydrocarbon contaminants. A
     biotreatability evaluation prior to full-scale operation
     demonstrated that the existing microorganisms in the soil
     could degrade the petroleum hydrocarbons, but that the
     nutrient levels in the soil were not sufficient to maintain
     growth and support complete degradation of the
     hydrocarbon contaminants. With adequate nutrients,
     hydrocarbons decreased from  3500 ppm to less than 100
     ppm in 4 weeks in bench scale studies. The degradation
     process exhibited biphasic kinetics, likely due to the fact the
     petroleum hydrocarbons were  a mixture of a lighter dlesel
    fuel and more recalcitrant waste motor oils. The full scale
     facility, which began operation  in 1988. consists of a four
     acre treatment site that has had 30 inches of contaminated
     soil applied to the surface.  Bioremediation of the top 15
     inches was proceeding by the addition of nutrients, daily
    tilling  and maintenance of adequate soil moisture levels.
    When the first 15 inches of contaminated soil have been
     remediated to the target cleanup level of 100 ppm. It will be
     removed and the second 15 Inches will be treated. During
    the first four weeks of operation, the average concentration
    of petroleum hydrocarbons was reduced from 2,800 to 280
     mg/kg. The rate of hydrocarbon biodegradation measured
    in the  field was consistent with  the rate measured in the
    laboratory.
    
    A solid phase treatment system to clean up pesticides in
    soil contaminated as a result of a fire at a chemical storage
    facility was also  described by Ross et al. [6]. Water used
    to extinguish the fire  carried large amounts of insecticides
    and herbicides into the soil beneath the warehouse facility.
     Laboratory biotreatability studies showed that moderately
    contaminated soils (90 mg/kg of 2,4-0) could be treated in a
     soil treatment system to meet regulatory criteria (total
     MCPA and 2.4-D - 10 mg/kg),  white highly contaminated
     soils (2,4-D concentrations greater than 200 mg/kg)
     required treatment in a soil/water slurry bioreactor. A five
     acre soil treatment area was constructed with an
    engineered clay liner 12 inches thick and a drainage system
    to control water movement. Ten thousand cubic yards of
    soil contaminated with a complex mixture of herbicides and
    insecticides. Including 2,4-D, alachlor, trtfluralln. carbofuran,
    and MCPA, were spread on the treatment bed to an
    average depth of 15 inches. During operation, soil
    conditions were optimized for biological activity by daily
    tilling and by maintenance of
    soil moisture content between 8% and 15% by weight
    During three months of operation, the combined 2,4-D
    and MCPA concentrations decreased from 86 ppm to 5
    ppm.
    
    Brubaker and Exner [74] reported on two case histories that
    involved microbial degradation of chemical contaminants to
    remediate chemical spills. Both sites also involved other
    remediation tools in addition to microbial remediation,
    emphasizing the need to examine complementary and
    synergistic remediation techniques. At the first site, residual
    contamination from a formaldehyde spill was treated using
    chemical oxidation with hydrogen peroxide, followed by
    microbial "polishing" to complete the remediation. A
    commercial inoculum of microorganisms acclimated for
    formaldehyde degradation and a nutrient solution were
    mixed in an aeration tank and  then sprayed on the site.
    Water was collected in a sump and recycled through the
    aeration tank. Treatment effectiveness was measured by
    reduction of concentration of formaldehyde In the aeration
    tank. After 25 days, concentrations had dropped from over
    700 mg/1 to less than 1  mg/l. At the second site, a gasoline
    leak from an underground storage tank was remediated
    with enhanced bioreclamation  techniques, which consisted
    of addition of nutrients and hydrogen peroxide as an oxygen
    source. A series of injection and recovery wells were used
    to recycle water through the site.  Soil samples showed a
    decrease in volatile fuel hydrocarbons from an average of
    245 ppm at the initiation of the bioreclamation process to
    0.8 ppm after 200 days.
    
    Bioremediation of a site contaminated with PCBs, which
    have generally been considered resistant to biodegradation
    in the environment, has been demonstrated at a drag-
    racing track in New York [55].  Laboratory treatabillty studies
    using contaminated soils from the sites inoculated with pure
    resting cell cultures of PCB-degrading organisms that had
    been isolated from environmental samples showed
    substantial PCB biodegradation, up to 51% of the PCBs
    present In three days. Follow-up laboratory studies were
    conducted using  only 3-4% of  the number of cells used in
    the earlier studies,  lower moisture content, lower
    temperatures, and  no shaking  or aeration of the reaction
    mixtures. PCB degradation was not observed until 30 days
    after the initiation of the study. In an undisturbed soil
    sample  inoculated three times weekly with the PCB-
    degrading microorganisms. 50% of the PCBs in the top 1
    cm of soil was degraded in 15  weeks. Only 10%
    degradation was seen at depths below 1 cm. When a
    duplicate of the undisturbed  soil experiment was mixed at
    three months with continued inoculation, the redistributed
    soil again exhibited the  highest degradation rate at the
    surface. In experiments where soils were inoculated three
    times weekly and mixed after each application, 35% of :*e
    PCBs were degraded after 23  weeks at all depths. This
    degree of degradation represents a greater amount ct PCB
                                                        7-87
    

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     destruction since the RGBs were degraded throughout the
     whole sample and not just at the surface. Thus mixing was
     Identified as an important site management variable.
     Preliminary results at a field scale test site at the drag-
     racing track indicated significant PCB degradation after
     eight to ten weeks.
     10. Conclusions
    Consideration of btoremediation for remediation of a site
    contaminated with organic constituents requires a detailed
    site. soil, and waste characterization that must be
    conducted In order to evaluate the potential application of
    the technology at the site and to demonstrate the feasibility
    of the approach. A sound and thorough engineering
    remediation plan developed at the onset of the project will
    allow cost-effective and efficient use of resources for
    Implementation of site clean-up. The use of treatability
    studies and simulation modeling are also necessary
    components of the bioremediation plan so that necessary
    data to evaluate potential use and to identify pathways of
    migration are collected in a cost-effective manner.
    Bioremediation of sites contaminated with organic
    chemicals is a promising technology, especially If it is
    Incorporated In a remediation plan that uses an integrated
    approach to the cleanup of the complete site, i.e., a plan
    that Involves the concept of a "treatment train" of physical,
    chemical, and/or biological processes to address
    remediation of all sources of contaminants  at the site.
    11. References
    1.  Omenn, G.S. (ed.). 1988. Environmental
        Biotechnology- Reducing Risks from Environmental
        Chemicals through Biotechnology. Plenum Press, New
        York, NY. 505 pp.
    
    2.  Engineering Foundation. 1988. Proceedings,
        Conference on Biotechnology Applications in
        Hazardous Waste Treatment. Engineering Foundation
        Conferences, Longboat Key, Florida, October 31-
        November 4.
    
    3.  AWMA/EPA. 1989. Proceedings of the IntematL
        Symposium on Hazardous Waste Treatment:
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        Management  Association and U.S. Environmental
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    4.  U.S. EPA. 1989. Bioremediation of Hazardous Waste
        Sites Workshop. CERI-89-11. U.S. Environmental
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    5.  McGinnis, G.D., H. Borazjanl, L.K. McFariand, D.F.
        Pope, and D.A. Strobel. 1989. Characterization and
        Laboratory Soil Treatability Studies for Creosote and
        Pentachlorophenol Sludges and Contaminated Soil.
        EPA/600/2-88/055, Robert S. Kerr Environmental
        Research Laboratory, U.S. Environmental Protection
        Agency, Ada. OK.
    
    6.  Ross, D., T. P. Marziarz, and A.L Bourquin. 1988.
        Bioremediation of hazardous waste sites in the USA:
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        9th Natl. Conf., Hazardous Materials Control Research
        Institute, Silver Spring, MD.
    
    7.  Wilson, L.Q.  1983. Monitoring in the vadose zone: Part
        III. Ground Water Monitoring Review (Winter):155-166.
    
    8.  Everett, L.G., E.W. Hoylman. L.G. McMillion, and  L.G.
        Wilson. 1982. Vadose zone monitoring concepts at
        landfills, impoundments, and land treatment disposal
        areas. In: Management of Uncontrolled Hazardous
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    9.  Wilson, LG.  1981. Monitoring in the vadose zone: Part
        I. Storage changes. Ground Water Monitoring Review
        (Fall):32-41.
    
    10. Wilson, LG.  1982. Monitoring in the vadose zone: Part
        II. Ground Water Monitoring Review (Winter):31-42.
    
    11. Lehr, J.H. 1988. The misunderstood world of
        unsaturated flow. Ground Water Monitoring Review
        (Spring):4-€.
    
    12. Sims, R.C., J.L Sims. D.L Sorensen. W.J. Doucette,
        and L.L Hastings. 1966. Waste/Soil Treatability
        Studies for Four Complex Industrial Wastes:
        Methodologies and Results. Vol. 1 and 2. EPA/600/6-
        86/003a and  b, Robert S. Kerr Environmental Research
        Laboratory, U.S. Environmental Protection Agency,
        Ada, OK.
    
    13. Sims, R.C., W.J. Doucette, J.E. McLean. W.J.
        Grenney. and R.R. Dupont. 1988. Treatment Potential
        for 56 EPA Listed Hazardous Chemicals in Soil. EPA/
        600/6-88-001, Robert S. Kerr Environmental Research
        Laboratory, U.S. Environmental Protection Agency,
        Ada, OK.
    
    14. Loehr, R. 1989. Treatability Potential for EPA Listed
        Hazardous Wastes in Soil. EPA/6CO/2-89/011, Robert
        S. Kerr Environmental Research Laboratory, U.S.
        Environmental Protection Agency, Ada, OK.
    
    15. Paul, E.A., and F. E. Clark. 1989.  Soil Microbiology and
        Biochemistry. Academic Press, Inc., San Dtego, CA.
    
    16. Rittmann, B.E., and P.L McCarty. 1980. Model of
        steady-state biofilm kinetics. Biotec. Bioeng. 22:23-43.
                                                       7-88
    

    -------
     17.  Horvath, R.S. 1972. Mfcrobial co-metabolism and the
         degradation of organic compounds In nature. Bacteriol.
         Rev. 36:146-155.
    
     18.  Perry, JJ. 1979. Microbial cooxidatton involving
         hydrocarbons. Microbiol. Rev. 43:59-72.
    
     19.  Keck. J.. R.C. Sims. M. Coover, K. Park, and B.
         Symons. 1989. Evidence for cooxldation of poly-
         nuclear aromatic hydrocarbons In soil. Water Res. (In
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     20.  Dragun. J. 1988. The Soil Chemistry of Hazardous
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     21.  Sims. R.C.. D.L Sorensen, J.L. Sims, J.E. McLean. R.
         Mahmood. and R.R. Dupont. 1984. Review of In Place
         Treatment Techniques for Contaminated Surface Soils.
         Volume 2: Background Information for In Situ
         Treatment EPA/540/2-84-003a. Municipal
         Environmental Research Laboratory, U.S.
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     22.  Mahmood, R.J.. and R.C. Sims. 1986. Mobility of
         organic* in land treatment systems. J. Environ. Eng.,
         Am. Soc. Civil Eng. 112:236-245.
    
     23.  Huddleston. R.L. C.A. Bleckmann, and J.R. Wolfe.
         1986. Land treatment biological degradation processes.
         pp. 41-61. In: R.C. Loehr and J.F. Malina, Jr. (eds.)
         Land Treatment: A Hazardous Waste Management
         Alternative. Water Resources Symposium No. 13,
         Center for Research in Water Resources, The
         University of Texas at Austin. Austin, TX.
    
    24. Park. K.S.. R.C. Sims, R.R. Dupont, W.J. Doucette.
        and J. E. Matthews. 1989. Fate of PAH compounds in
        two soil types: Influence of volatilization, abiotic loss,
        and biological activity. Environ. Toxicol. Chem. (In
        press).
    
    25. U.S. EPA. 1986. Permit Guidance Manual on
        Hazardous Waste Land Treatment Demonstrations.
        EPA-530/SW-86-032, Office of Solid Waste and
        Emergency Response, U.S. Environmental Protection
        Agency. Washington, DC.
    
    26. U.S. EPA. 1988b. Interim Protocol for Determining the
        Aerobic Degradation Potential of Hazardous Organic
        Constituents in Soil. U.S. EPA Scientific Steering
        Committee, Blosystems Technology Development
        Program, and Soil Treatment Processes Committee,
        Robert S. Kerr Environmental Research Laboratory,
        U.S. Environmental Protection Agency, Ada, OK.
    
    27. Uu, D., and B.J. Dutka (eds.). 1984. Toxicity Testing
        Procedures using Bacterial Systems. Marcel Dekker,
        Inc., New York. Inc.
     28.  Dutka. B.J., and Q. Bttton. 1986. Toxicity Testing using
         Microorganisms. CRC Press, Inc.. Boca Raton, FL
    
     29.  Ames. B.N.. J. McCann. and E. Yamasakl. E. 1975.
         Methods for detecting carcinogens and mutagens with
         the Salrnonella/mamrnalian-rnterosorne mutageniclty
         test. Mutation Res. 31347-364.
    
     30.  Maron, D.M.. and B.N. Ames. 1983. Revised methods
         for the Salmonella mutageniclty test Mutation Res.
         113:173-215.
    
     31.  Sims. R.C.. J.L Sims, and R.R. Dupont. 1964. Human
         health effects assays. J. Water Pollut. Control Fed. 56:
         791-800.
    
     32.  Sims, R.C.. J.L Sims, and R.R. Dupont. 1985. Human
         health effects assays. J. Water Pollut. Control Fed.  57:
         728-742.
    
     33.  Sims, R.C., J.L. Sims, and R.R. Dupont. 1986. Human
         health effects assays. J. Water Pollut. Control Fed.  58:
         703-717.
    
     34.  Sims, R.C., J.L Sims, and R.R. Dupont. 1987. Human
         health effects assays. J. Water Pollut. Control Fed. 59:
         601-614.
    
     35.  Sims. R.C., J.L Sims, and R.R. Dupont. 1988. Human
         health effects assays. J. Water Pollut. Control Fed. 60:
         1093-1196.
    
     36.  McCann, J.R.. R. Choi. E. Yamasaki, and 8.N. Ames.
         1975. Detection of carcinogens as mutagens in the
         Salmonella/mterosome test: Assay of 300 chemicals.
         Proc. Natl. Acad. Sci. 72:5135-5139.
    
     37.  Bulich. A.A. 1979.  Use of  luminescent bacteria for
        determining toxicity in aquatic environments, p. 98-106.
         In: L.L. Markings and R.A. Kimerle. eds. Aquatic
        Toxicology. ASTM 667, Amer. Soc. for Testing and
        Materials, Philadelphia, PA.
    
    38. Matthews, J.E. and A.A. Bulich. 1984.  A toxicity
        reduction test system to assist predicting land
        treatability of hazardous wastes, pp.  176-191.
        In: J.K. Petros. Jr.. W.J. Lacy, and R.A. Conway,
        eds.. Hazardous and  Industrial Solid Waste
        Testing: Fourth Symposium STP-886.  American So-
        ciety of Testing and Materials, Philadelphia, PA,
    
    39. Matthews. J.E. and L. Hastings. 1987. Evaluation ol
        toxicity test procedure for screening treatability
        potential of waste in soil. Toxicity Assessment:  An
        Internal!. Quarterly 2:265-281.
    
    40. Symons, B.D. and R.C. Sims. 1988. Assessing
        detoxification of a complex hazardous waste, using the
        Microtox™ bioassay. Arch. Environ. Contamination
        Toxicol. 17:497-505.
                                                       7-89
    

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      41.  Borden. R.C., and P.B. Bedient. 1987. In situ
          measurement of adsorption and biotransformation
          at a hazardous waste site. pp. 629-636. In: M. A.
          Marino (ed.) Subsurface Flow and Contamination
          Methods of Analysis and Parameter Uncertainty.
          AWRA Monograph Series No. 8. Am.  Water
          Resources Assoc., Bethesda. MO.
    
      42.  Donagian. A.S.. Jr., and P.S.C. Rao. 1986. Overview of
          terrestrial processes and modeling, pp. 1-1-32. In: S.C.
          Hem and S.M. Melancon (eds.) Guidelines for Field
          Testing Soil Fate and Transport Models, Final Report.
          EPA/600/4-86/020, Environmental Monitoring Systems
          Laboratory, U.S. Environmental Protection Agency, Las
          Vegas, NV.
    
      43.  Digiulio, O.C., and I.H. Suffet. 1988. Effects of physical,
          chemical, and biological variability in modeling organic
          contaminant migration through soil. pp. 132-137. In:
          Superfund '88, Proc. 9th Natl. Conf., Hazardous Mater-
          ials Control Research Institute, Silver Spring, MD.
    
      44.  Short, T.E.  1986. Modeling processes in the unsat-
          urated zone. pp. 211 -240. In: R.C. Loehr and J.F.
          Malina, Jr. (eds.) Land Treatment: A Hazardous Waste
          Management Alternative. Water Resources Symposium
          No. 13. Center for Research in Water Resources, The
          University of Texas at Austin, Austin, TX.
    
      45.  U.S. EPA. I988a. Interactive Simulation of the Fate of
          Hazardous Chemicals during Land Treatment of Oily
          Wastes: RITZ user's guide. EPA/600/8-88-001, Robert
          S. Kerr Environmental Research Laboratory, U.S.
          Environmental Protection Agency, Ada, OK.
    
      46.  Jury, W.A.. W.F. Spencer, and W.J. Farmer. 1983.
          Behavior assessment model for trace  organtes in soil:
          Model description. J. Environ. Qual. 12: 558-564.
    
      47.  McLean.  J.E., R.C. Sims. W.J. Doucette. C.L. Caupp,
          and W.J. Grenney. 1988. Evaluation of mobility of
          pesticides in soil using U.S. EPA methodology. J.
          Environ. Eng. Am. Soc. Civil Eng. 114: 689-703.
    
    "48.  Stevens, O.K., W.J. Grenney, and Z. Van. 1988. User's
          Manual: Vadose Zone Interactive Processes Model.
          Dept. of Civil and Environ. Eng., Utah  State Univ.,
          Logan. UT.
    
      49.  Stevens,  O.K., W.J. Grenney, Z. Van, and R.C. Sims.
          1989. Sensitive Parameter Evaluation for a Vadose
          Zone Fate and Transport Model. EPA/600/2-89/039.
          Robert S. Kerr Environmental Research Laboratory,
          U.S. Environmental Protection Agency, Ada, OK.
    
      50.  Symons.  B.D.. R.C. Sims, and W.J. Grenney. 1988.
          Fate and transport of organics in soil:  Model predictions
          and expehmental results. J. Water Pollut. Control Fed.
          60:1684-1693.
    51. Grenney, W.J., C.L Caupp, R.C. Sims, and T.E. Short
        1987. A mathematical model for the fate of hazardous
        substances in soil: Model description and experimental
        results. Hazardous Wastes & Hazardous Materials
        4:223-239.
    
    52. Sims, R.C. and Overcash, M.R. 1983. Fate of
        polynuctear aromatic compounds (PNAs) in soil-plant
        systems.  Residue Reviews 88:1-68.
    
    53. Bulman, T.. S. Lesage, P.J. A. Fowlie. and M.O. Web-
        ber. 1985. The persistence of poly-nuclear aromatic
        hydrocarbons in soil. PACE  Report No. 85-2. Pet-
        roleum Association for Conser vation of  the Canadian
        Environment, Ottawa, Canada.
    
    54. Rochkind, M.L and J.W. Blackburn. 1986. Micro-
        bial Decomposition of Chlorinated Aromatic Com-
        pounds. EPA/600/2-86/090, Hazardous Waste Eng-
        ineering Research Laboratory, U.S. Environmental
        Protection Agency. Cincinnati. OH.
    
    55. Unterman, R., O.L. Bedard. M.J. Brennan, L.H.
        Bopp, F.J. Mondello, R.E. Brooks. D.P. Mobley,
        J. B. McDermott, C. C. Schwartz, and O.K. Dietrich.
        1988. Biological approaches for polychlorinated
        biphenyl degradation, pp. 253-269. In: G.S. Omenn
        (ed.), Environmental Biotechnology - Reducing
        Risks from Environmental Chemicals through
        Biotechnology, Plenum Press, New York, NY.
    
    56. Vogel. T.M., C.S. Criddle. and P.L. McCarty.
        1987. Transformations of halogenated aliphatic
        compounds. Environ. Sci. Technol. 21:722-736.
    
    57. McCarty P.L. 1988. Bioengineering issues related
        to in situ remediation of contaminated soils and
        groundwater. pp. 143-162. In: G.S. Omenn (ed.),
        Environmental Biotechnology - Reducing Risks
        from Environmental Chemicals through Biotech-
        nology, Plenum Press, New York, NY.
    
    58. Guenzi. W.D. (ed.). 1974. Pesticides in Soil
        and Water.  Monograph. Soil Sci. Soc. Am.,
        Madison. Wl.
    
    59. Goring. C.A.I., and J.W. Hamaker (eds.). 1972.
        Organic Chemicals in the Soil Environment. Marcel
        Dekker, Inc. New York, NY.
    
    60. Goring, C.A.I.. D.A. Laskowski, J.W. Hamaker.
        R.W Miekle. 1975.  Principles of pesticide degrada-
        tion m soil.   In: R. Haque and W.H. Freed (eds.)
        Environmental Dynamics of Pesticides. Plenum Press.
        New York. NY.
    
    61. Rao. P.S.C., and J.M. Davidson. 1982. Estimation
        of pesticide retention and transformation parameters
        required in nonpoint source pollution models. In: M.R.
                                                         7-90
    

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        Overcash and J.M. Davidson (eds.). Environmental
        Impact of Nonpoint Source Pollution, Ann Arbor
        Science, Ann Arbor, Ml.
    
    62. Overcash, M.R., and D. Pal. 1979. Design of Land
        Treatment Systems for Industrial Wastes: Theory and
        Practice. Ann Arbor Science, Ann Arbor, Ml.
    
    63. U.S. EPA. 19S8c. Soil Transport and Fate Database
        and User's Manual (Draft). Cooperative Agreement
        No. 813211, Robert S. Kerr Environmental Research
        Laboratory, U.S. Environmental Protection Agency,
        Ada, OK.
    
    64. Offutt, C.K., J.O. Knapp, E. Cord-Duthinh. DA
        Bissex, A.W. Oravetz, Jr., Q.D. Lacy, P.J. Kenney,
        E.L Green, and D. Bhinge. 1988. Analysis of
        contaminated soil treatment effectiveness, pp.
        429-434. In: Superfund '88, Proc. 9th Natl. Conf.,
        Hazardous Materials Control Research Institute,
        Silver Spring, MD.
    
    65. CDM Federal Programs Corporation. 1988.
        Summary of Treatment Technology Effectiveness
        lor Contaminated Soil.  Office of Emergency and
        Remedial Response, U.S. Environmental Protection
        Agency, Washington, DC.
    
    66. Ryan, J., R. Loehr, and R. Sims. 1987. The Land
        Treatabillty of Appendix VIII Constituents Present
        in Petroleum Refinery Wastes: Laboratory and
        Modelling Studies. American Petroleum Institute,
        Land Treatment Committee,  1220 L. Street,
        Washington. D.C. (8 volumes).
    
    67. Sims, R.C. 1986. Loading rates and frequencies
        for land treatment systems, pp. 151-170. In:
        R.C. Loehr and J.F. Mallna. Jr. (eds.) Land
        Treatment: A Hazardous Waste Management
        Alternative. Water Resources Symposium No. 13,
        Center for Research in  Water Resources, The
        University of Texas at Austin, Austin, TX.
    
    68. Coover,  M.P. and R.C.  Sims. 1987. The effect of
        temperature on polycyclte aromatic hydrocarbon
        persistence in an unaccllmated agricultural soil.
        Hazardous Waste & Hazardous Materials 4:69-82.
    
    69. Sims. R.C. 1986.  Soil Treatabillty Study Results-Coal
        Gasification Process Water Pond Residuals. Utah
        Water Research Laboratory,  Utah State University,
        Logan, UT.
    
    70. Park, K.S., R.C. Sims, W.J. Doucette, and J.E.
        Matthews. 1988. Biological transformation and
        detoxification of 7,12-dimethylbenz(a)anthracene in soil
        systems. J. Water Pollut. Control Fed. 60:1822-1825.
    
    71. Sims, R.C. 1989. Overview of bioremediation in soil
        and ground water: theoretical and practical
        considerations. Proc.. Forum on Bioremediation of
        Wood Treating Waste. Mississippi Forest Products
        Utilization Laboratory, Mississippi State University,  '
        March 14-15 (In press).
    
    72. Lynch, J., and B.R. Genes. 1989. Land treatment of
        hydrocarbon contaminated soils. Ch. 14, pp. 163-174.
        In: P.T. Kostecki and E. J. Calabrese (eds.),
        Petroleum Contaminated Soils, Vol I: Remediation
        Techniques, Environmental Fate, and Risk
        Assessment. Lewis Publishers, Chelsea, Ml.
    
    73. St. John, W.D.  and D.J. Sikes. 1988. Complex
        industrial waste sites, pp. 237-252. In: G.S. Omenn
        (ed.). Environmental Biotechnology - Reducing Risks
        from Environmental Chemicals through Biotechnology,
        Plenum Press.  New York, NY.
    
    74. Brubaker, G.R., and J.H.  Exner. 1988. Bioremediation
        of chemical spills, pp. 163-171. In: G.S. Omenn (ed.),
        Environmental Biotechnology - Reducing Risks from
        Environmental Chemicals through Biotechnology,
        Plenum Press,  New York, NY.
                                                             7-91
    

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    7.26          KEY REFERENCE LIST - BIOREMEDIATION
    Bumpus, John A., "Biodegradation of Polycyclic Aromatic Hydrocarbons by Phanerochaete
           chrysosporium," Applied and Environmental Microbiology, 55, 154-158 (1989).
    
    Heitkamp, Michael A., et al, "Microbial Metabolism of Polycyclic Aromatic Hydrocarbons:
           Isolation and Characterization of Pyrene-degrading Bacterium." Applied and
           Environmental Microbiology, 54, 2549-2555 (1988).
    
    Mihelcic, J.R. and Luthy, R.G., "Degradation of Polycyclic Aromatic Hydrocarbon Compounds
           Under Various Redox Conditions in Solid-Water Systems," Appl. Env. Microbiol., 54,
           1182-1187(1988).
    
    Muller, J.G., et al., "Bench-Scale Evaluation of Alternative Biological Treatment Processes for
           Remediation of Pentachlorophenol - and Creosote-Contaminated Materials: Solid-Phase
           Bioremediation".  Environmental Science and Technology, 25(7)":1045-1055,(1990).
    
    Muller, J.G. et., al., "Bench-Scale Evaluation of Alternative Biological Treatment Processes for
           Remediation of Pentachlorophenol - and Creosote-Contaminated Materials: Slurry-
           Phase  Bioremediation".  Environmental Science and Technology, 25(7)":1045-1055,(1990).
    
    U.S. Army, 1982.  Composting of Explosives, U.S. Army Report, DRXTH-TE USATHAMA,
           1986.  Composting Explosive/Organic Contaminated Soils, USATHAMA AMXTH-TE-
           CR-86077.
    
    U.S. Environmental Protection Agency, 1986.  Microbial Decomposition of Chlorinated Aromatic
           Compounds, EPA/600/2-86/090.
    
    U.S. Environmental Protection Agency, 1988.  A Field Evaluation of Bioremediation of a Fuel
           Spill Using Hydrogen Peroxide, NTIS PB88-130257 (Available from EPA, Ada, OK).
    
    U.S. Environmental Protection Agency, 1988.  Interactive Simulation of the Fate of Hazardous
           Chemicals During Land Treatment of Oily Wastes:  Ritz User's Guide, NTIS PB88-
           195540 (Available from EPA, Ada, OK).
    
    U.S. Environmental Protection Agency, 1988.  Removal of Volatile Aliphatic Hydrocarbons in a
           Soil Bioreactor, NTIS PB88-170568 (Available from EPA, ADA, OK).
    
    U.S. Environmental Protection Agency, 1988.  Transformations of Halogenated Aliphatic
           Compounds, NTIS PB88-249859 (Available from EPA, Ada, OK).
    
    U.S. Environmental Protection Agency, 1989.  Bioremediation of Hazardous Waste Sites Workshop
           - Speaker Slide copies and Supporting Information, CERI-89-11.
    
    U.S. Environmental Protection Agency, 1989.  In-Situ Bioremediation of Spills from
           Underground Storage Tanks, NTIS PN89-219976 (Available from EPA, Ada, OK).
    
    U.S. Environmental Protection Agency, 1989.  Innovative Technology: Slurry-Phase
           Biodegradation, OSWER Directive 9200.5-252-FS (Fact Sheet Attached).
    
    U.S. Environmental Protection Agency, 1989.  Treatability  of Hazardous Chemicals in Soils;
           Volatile and Semi-Volatile Organics, NTIS DE/89-01-016892 (Available from EPA Ada
           OK).
    
    U.S. Environmental Protection Agency, 1989.  Treatability  Potential for EPA Listed Hazardous
           Wastes in Soil, NTIS PB89-166581 (Available from EPA, Ada, OK).
    
    
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    7.26         KEY REFERENCE LIST - BIOREMEDIATION (continued)
    
    U.S. Environmental Protection Agency, 1989. Treatability Potential for 56 EPA Listed Hazardous
           Chemicals in Soil, NTIS PB89-174446 (Available from EPA, Ada, OK).
    
    U.S. Environmental Protection Agency, 1990. Bioremediation - The Quarterly Bulletin of the
           Bioremediation Field Initiative (Bulletin produced by U.S. EPA Office of Solid Waste and
           Emergency Response, Technology Innovation Office, Office of Research and
           Development.  First volume available November 1990).
    
    U.S. Environmental Protection Agency, 1990. Bioremediation of Contaminated Surface Soil,
           NTIS PB90-164047 (Available from EPA, Ada,  OK).
    
    U.S. Environmental Protection Agency, 1990. Enhanced Bioremediation Utilizing Hydrogen
           Peroxide as a Supplemental Source of Oxygen, NTIS PB90-183435 (Available from EPA,
           Ada, OK).
    
    U.S. Environmental Protection Agency, 1990. International Evaluation of In-Situ Biorestoration
           of Contaminated Soil and Groundwater, EPA/540/2-90/012.
    
    U.S. Environmental Protection Agency, 1990. Inventory of Treatability Study Vendors, Volume
           I: EPA 540/2-90/003a.
    
    U.S. Environmental Protection Agency, 1990. Second Forum on Innovative Treatment
           Technologies, Domestic and International, Philadelphia, PA, May  15-17, 1990, EPA
           540/2-90/006 (Abstracts) or EPA/540/2-90/010 (Technical Papers).
    
    Wang, X., X. Yu, and R. Bartha, "Effect of  bioremediaiton on polycyclic  aromatic hydrocarbon
           residues in soil". Environmental Science and Technology, 24(7): 1086 - 1089, (1990).
    Note: A more comprehensive bibliography is being developed.
                                              7-93
    

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                               TABLE OF CONTENTS
    
    Section                                                                Paee
    
    
    8.0  VACUUM EXTRACTION	  8-1
    
         8.1    TECHNOLOGY DESCRIPTION	  8-1
    
         8.2    TECHNOLOGY STATUS	  8-1
    
         8.3    APPLICATION 	  8-1
    
         8.4    TECHNOLOGY STRENGTHS	  8-2
    
         8.5    TECHNOLOGY LIMITATIONS	  8-2
    
         8.6    POTENTIAL MATERIALS HANDLING REQUIREMENTS	  8-2
    
         8.7    WASTE/SOLID CHARACTERISTICS AFFECTING PERFORMANCE  	  8-3
    
         8.8    BIOVENTING	  8-3
    
         8.9    RADIO-FREQUENCY HEATING	  8-3
    
         8.10   STEAM OR HOT AIR INJECTION  	  8-4
    
         8.11   HORIZONTAL WELLS FOR IN SITU REMEDIATION  	  8-4
    
         8.12   EXHIBIT 1 - WASTE CHARACTERISTIC TABLE	  8-5
    
         8.13   EXHIBIT 2 - DATA FROM THE SEMI ANNUAL STATUS REPORT  	8-6
    
         8.14   EXHIBIT 3 - INNOVATIVE TREATMENT TECHNOLOGIES:  SEMI-
               ANNUAL STATUS REPORT	  8-7
    
         8.15   EXHIBIT 4 - VAPOR PRESSURE 	  8-15
    
         8.16   EXHIBIT 5 - ENGINEERING BULLETIN IN SITU SOIL VAPOR
               EXTRACTION TREATMENT	  8-16
    
         8.17   EXHIBIT 6 - SITE TECHNOLOGY PROFILE - TOXIC TREATMENTS
               (USA), INC	  8-26
    
         8.18   EXHIBIT 7 - SITE TECHNOLOGY PROFILE - AWD TECHNOLOGIES,
               INC	  8-28
    
         8.19   EXHIBIT 8 - SITE TECHNOLOGY PROFILE - TERRA VAC, INC	8-30
    
         8.20   EXHIBIT 9 - IN SITU SOIL DECONTAMINATION BY RADIO-
               FREQUENCY  HEATING  	  8-32
    
         8.21   EXHIBIT 10 -  PROJECT SUMMARY: SOIL VAPOR EXTRACTION
               TECHNOLOGY REFERENCE HANDBOOK	8r33
    
         8.22   KEY REFERENCE LIST - VACUUM EXTRACTION	  8-36
    

    -------
                                  8.0   VACUUM EXTRACTION
    8.1
    TECHNOLOGY DESCRIPTION
           This system applies a vacuum to a series of extraction wells to create air flow through the
    
    vadose zone. As air moves through the system, volatile contaminants move from the soil and pore
    
    water to the air. The contaminated air is withdrawn, often with entrained water, and treated
    
    using an emission control system such as activated carbon or catalytic oxidation.
             Soils containing volatile
             organic compounds
                                 Vacuum
                                Extraction
                                          Possible innovative
                                        modifications include:
    
                                          • Bloventing
                                          • Radio-frequency heating
                                          • Horizontal wells
                                          • Hot air or steam enhanced
    Entrained water requiring \
    treatment               \
    Soil tailings from well drilling \
    Offgases
    Spent carbon *
                                                                   • D«p«ndng on proc*w
    /
    8.2
    TECHNOLOGY STATUS
                        Used at over 50 sites, including eleven Superfund sites, where the
                        application is complete (one site) or in progress (ten sites).  A SITE
                        demonstration at the Groveland Wells Site in Massachusetts was also
                        conducted to evaluate the effectiveness of the process.
    8.3
    APPLICATION
                        In practical terms, the process works well with most soil types.  In a SITE
                        demonstration, the process demonstrated good performance in removing
                        volatile organics from soil with measured permeability ranging from  10"4
                        to 10"8 cm/s.
    
                        The process works well under all weather conditions.
    
                        The process is generally applicable to volatile and moderately volatile
                        organic compounds.
                                               8-1
    

    -------
                  •      The vapor pressure of the compound provides a relative measure of the
                         volatility.  Exhibit 4 presents the vapor pressures of organic compounds
                         frequently found at Superfund sites.  Although the success of a vacuum
                         extraction project will depend on site specific conditions, this technology
                         has been selected for contaminants with vapor pressures as low as 8 torr.
    
                  •      The technology is also applicable for removal of volatile light non-
                         aqueous phase liquids floating on the water table or entrained in the
                         capillary fringe.
    
    
    8.4           TECHNOLOGY STRENGTHS
    
    
                  •      Can be used in conjunction with other remedial alternatives. Can be used
                         as pretreatment prior to excavation.
    
                  •      Demonstrated effectiveness in removing VOCs from the vadose zone.
    
                  •      Minimally disturbs  contaminated soil.
    
                  •      Treatment costs are low compared to technologies requiring excavation.
                         Available data indicate costs typically near $50 per ton. The economics of
                         this process strongly depend on whether off-gas treatment is required and
                         whether wastewater is generated at the site.  These factors were considered
                         in the above estimate.  The most cost effective systems have  been in
                         homogeneous, sandy soils.
    
                  •      The technology is relatively simple and reliable.
    
    
    8.5           TECHNOLOGY LIMITATIONS
    
    
                  •      The process is limited to volatile compounds.
    
                  •      Non- homogeneous  soil can result in irregular air flow or "short circuiting"
                         which will result  in uneven treatment.
    
                  •      Entrained  soil moisture must be removed from the air stream and treated.
                         When  the soil  moisture is high, this can add to the cost of treatment.
    
    
    8.6           POTENTIAL  MATERIALS HANDLING REQUIREMENTS
    
    
                  •      This technology is used in situ; no excavation is required.
    
                  •      The contaminated soils may require dewatering.  Because  this technology
                         works better as the  air-filled porosity of the soils increases, performance
                         may be improved and removal of the contaminants maximized early  in
                         treatment by dewatering saturated or very wet areas before treatment.
                         Because this is an in situ technology, the material must be dewatered with
                         in situ methods such as well points and drains.
                                               8-2
    

    -------
    8.7    WASTE/SOLID CHARACTERISTICS AFFECTING PERFORMANCE
    
                  •      The major considerations in applying this technology are contaminant
                         volatility, air-filled soil porosity, and site-specific cleanup level.
                  •      Where soils have low permeability and high moisture content (i.e., low air-
                         filled porosity) a pilot demonstration test should be considered to
                         determine the feasibility of dewatering the soil.
                  •      There is ongoing testing of alternatives to activated carbon for exhaust air
                         treatment.  One such system involves thermal catalytic destruction.
    
    8.8           BIOVENTING
    
           A promising modification of vacuum extraction is its potential to enhance the
    biodegradation of volatile and semivolatile chemicals in the soil.  Vacuum extraction provides air
    to the vadose zone, and thus carries oxygen that can be used by soil microorganisms to
    biodegrade contaminants.  Field tests conducted by the Air Force in 1990 at Tyndall Air Force
    Base on soils contaminated with jet fuel suggest that biodegradation becomes increasing
    significant as the primary hydrocarbon removal mechanism as the more volatile compounds are
    stripped from  the soil.  Under optimal air flow conditions (0.5 air void volumes per day), 82% of
    the hydrocarbon removal was the  result of biodegradation. These field tests also suggest that the
    effect of temperature on  biodegradation rates approximates the effects predicted by the van't
    Hoff-Arrhenius equation, i.e.,  the reaction rate approximately doubles for  every 10°C rise in
    temperature.
    
           This modification of the process has two potential benefits. First, it will supply complete
    destruction of a  large portion of contaminants in the ground and  minimize  the amount of
    extracted gas requiring treatment, thereby reducing costs.  Second enhanced in situ
    biodegradation will also destroy the heavy hydrocarbons that, due to their low volatility, are not
    removed by conventional vacuum extraction alone.
    
    8.9           RADIO-FREQUENCY HEATING
    
           Another  potential enhancement of the vacuum extraction  process is the use of radio-
    frequency (RF) heating to more rapidly volatilize contaminants and to increase the volatilization
    of compounds with higher boiling points. The uniform heating provided by RF energy is also
    expected to improve  soil  porosity and  to improve removal rates in clay and silt soils.
                                                8-3
    

    -------
           This technology is being demonstrated by the Air Force.  Energy is delivered by means of
    an array of electrodes placed in bore holes.  The specific frequency is selected based on dielectric
    properties of the soil, the depth of treatment desired, and the size of the heated soil volume.
    Recent tests were conducted on a fire training area at an Air Force base in Wisconsin. A 500 ft3
    test volume was heated for  12 days.  The first 8 days were required to heat the soil to the 300°F
    ISO'C target temperature, which was then retained for a period of 4 days.  A 97 percent removal
    was observed for semivolatile hydrocarbons and. a 99 percent removal for volatile aromatics and
    aliphatics. Power estimates for full-scale application were quite reasonable at 500 kw-hr/yd3.
    
    8.10          STEAM OR  HOT AIR INJECTION
    
           In situ steam injection facilitates the removal of moderately volatile residual organics,
    including NAPLs, from the vadose zone. Steam injection technology injects  pressured steam to
    thermally enhance the evaporation rate of the contaminant and its subsequent removal.  Injection
    of steam also can be expected to enhance removal of residual NAPL's in the  unsaturated zone by
    decreasing their viscosities.  Steam injection is an emerging technology that appears promising,
    particularly if used in conjunction with vacuum extraction.
    
    8.11          HORIZONTAL WELLS FOR IN SITU REMEDIATION (Discussed in Section
                  10.4)
                                               8-4
    

    -------
    8.12
                  EXHIBIT 1 - WASTE CHARACTERISTIC TABLE
    Waste Type:  Soils
    Technology:  In Situ Vacuum and Steam Extraction
       Characteristics
      Impacting Process
          Feasibility
          Reason for Potential Impact
            Data
         Collection
        Requirements
    Presence of:
    • Less volatile
     organics
    • Metals
    • Cyanides
    • Inorganics
    
    High solubility of
    volatile organics in
    water
    
    Unfavorable soil
    characteristics:
    
    • Low permeability
    • Variable soil
      conditions
    
    • High humic content
    • High moisture
      content
    Only volatile compounds with a Henry's
    Law constant of approximately >3 x 10"3
    atm-m/mole can be effectively removed
    by vacuum extraction; theoretically, steam
    or hot air extraction should apply to less
    volatile compounds.
    
    Dissolved organics are more mobile and
    harder to remove from aqueous phase.
    Hinders movement of air through soil
    matrix.
    
    Inconsistent removal rates.
    Inhibition of volatilization.
    Hinders movement of air through soil.
    Analysis for priority
    pollutants; Henry's
    Law constant or vapor
    pressures for organics
    Contaminant
    solubilities
    Percolation test, pilot
    vapor extraction tests
    
    Soil mapping
    Analysis for organic
    matter
    
    Analysis of soil
    moisture content
    Source: Technology Screening Guide for Treatment of Soils and Sludges EPA/540/2-88/004
            (1988)
                                               8-5
    

    -------
    8.13
    EXHIBIT 2 - DATA FROM THE SEMI ANNUAL STATUS REPORT
     Selection  Frequency
    
               20
               15
    
       NUMBER
       Of TIMES 1 0
      SELECTED
                                Vacuum Extraction
                    84    85    86    87     88    89     90
    
                                   FISCAL YEAR
           * Data derived from 1982 -1990 Records of Decision ( RODs ) and anticipated design and
            construction activities.
                                                               September 1991
          Contaminants Treated By Vacuum Extraction
      Number
        of
     Superfund
       Sites
                  BTEX
               PCE,  TCE,
               DCE,  Vinyl
                Chloride
    DCA.     Carbon    Chloroform    Other
                                      TCA
                                            Tetrachlorlde
                                  VOCs
      * Data derived from 1982 - 1990 Records of Decision (RODs) and anticipated design and construction
        activities. At some sites, the treatment is for more than one major contaminant.
                                       8-6
    

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    -------
    8.14        EXHIBIT 3 - INNOVATIVE TREATMENT TECHNOLOGIES: SEMI-ANNUAL
               STATUS REPORT (continued)
                                     8-14
    

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    8.15          EXHIBIT 4 - VAPOR PRESSURE
                                       Vapor Pressure for Typical VOCs
                                           (torr = mm of Hg @ 0°°)
                             1,4-dichlorobenzene                          1.0 torr
                             1,2-dichlorobenzene                          1.5
                             1,3-dichlorobenzene                          2.2
                             1,1,2,2-tetrachloroethane                     6.16
                             o-xylene                                    6.6
                             m-xylene                                    8.3
                             dibromochloromethane                       8.99
                             ethylbenzene                                 9.6
                             chlorobenzene                              12.0
                             tetrachloroethylene                          18.5
                             methyl isobutyl ketone                      19.9
                             1,1,2-trichloroethane                        23.0
                             toluene                                     28.4
                             1,2-dichloropropane                         53.3
                             trichloroethyfene                            69.0
                             1,2-dichloroethane                          78.9
                             benzene                                    95.2
                             methyl ethyl ketone                         95.3
                             cyclohexane                                96.9
                             carbon tetrachloride                        120.0
                             1,1,1-trichloroethane                       124.0
                             n-hexane                                  152.0
                             chloroform                                197.0
                             cis-l,2-dichloroethylene                    201.0
                             1,1-dichloroethane                         227.0
                             vinyl chloride                              298.0
                             trans-1,2-dichloroethylene                  331.0
                             methylene chloride                         435.0
                             1,1-dichloroethylene                        600.0
                             trichlorofluoromethane                     803.0
                             chloroethane                              1010.0
    Note:  Although all of these compounds are volatile, Vacuum Extraction will work better for
           compounds with high vapor pressures (low on the table) than those with relatively low
           vapor pressures. Vacuum extraction has been selected at Superfund sites to remove
           contaminants with vapor pressure as low as 8.
    
                                               8-15
    

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       8.16
    EXHIBIT 5 - ENGINEERING BULLETIN IN SITU SOIL VAPOR
    EXTRACTION TREATMENT
                               Unted States
                               Environmental Protection
                               Agency
                                        Office of Emergency and
                                        Remedial Response
                                        Washington, DC 20460
    Office of
    Research and Development
    Cincinnati, OH 45268
                               Superfund
                                         EPA/540/2-91/006
    May 1991
                                Engineering Bulletin
                                In  Situ  Soil  Vapor  Extraction
                               Treatment
     Purpose
    
        Section 121(t>) of the Comprehensive Environmental Re-
     sponse, Compensation, and Liability Act (CERCLA) mandates
     the Environmental Protection Agency (EPA) to select remedies
     that "utilize permanent  solutions and alternative treatment
     technologies or resource recovery technologies to the maxi-
     mum  extent practicable" and to prefer remedial actions in
     which treatment "permanently and significantly reduces the
     volume, toxicity, or mobility of hazardous substances, pollut-
     ants, and contaminants  as a principal element."  The Engi-
     neering Bulletins are a series of documents that summarize
     the latest information available on selected treatment and site
     remediation technologies and related issues.  They provide
     summaries of and references for the latest information to help
     remedial project managers, on-scene coordinators, contrac-
     tors, and other site cleanup managers understand the type of
     data and site characteristics needed to evaluate a technology
     for potential applicability to their Superfund or other hazard-
     ous waste  site.  Those documents that describe individual
     treatment  technologies  focus on remedial scoping  needs.
     Addenda will be issued  periodically to update the original
     bulletins.
    Abstract
    
        Soil vapor extraction (SVE) is designed to physically re-
    move volatile compounds, generally from the vadose or un-
    saturated  zone.  It is an in  situ process  employing vapor
    extraction wells alone or in combination  with air injection
    wells. Vacuum blowers supply the motive force, inducing air
    flow through the soil matrix.  The air strips the volatile com-
    pounds from the soil and carries them to the screened ex-
    traction well.
    
        Air emissions from the systems are typically controlled by
    adsorption of the volatiles onto activated carbon, thermal
    destruction (incineration or catalytic oxidation), or condensa-
    tion by refrigeration [1, p. 26].*
    
        SVE is a developed technology that has been used in
    commercial operations for several years. It was the selected
    remedy for the first Record of Decision (ROD) to be signed
    under the Superfund Amendments  and Reauthorization Act
    of 1986 (the Verona Well Field Superfund Site in Battle Creek,
    
    * [reference number, page number]	
                                          Michigan). SVE has been chosen as a component of the ROD
                                          at over 30 Superfund sites [2] [3] [4] [5] [6].
    
                                              Site-specific treatability studies are the only  means of
                                          documenting the applicability and performance of an SVE
                                          system. The EPA Contact indicated at the end of this bulletin
                                          can assist in the location of other contacts and sources of
                                          information necessary for such treatability studies.
    
                                              The final determination of the lowest cost alternative will
                                          be more  site-specific than process equipment dominated.
                                          This bulletin provides information on the technology applica-
                                          bility, the limitations of the technology, the technology de-
                                          scription, the types of residuals produced, site requirements,
                                          the latest performance data, the status of the technology, and
                                          sources for further information.
                                          Technology Applicability
    
                                              In situ SVE has been demonstrated effective for removing
                                          volatile organic compounds (VOCs) from the vadose zone.
                                          The effective removal of a chemical at a particular site does
                                          not, however,  guarantee an acceptable removal level at all
                                          sites. The technology is very site-specific. It must be applied
                                          only after the  site has been characterized. In general, the
                                          process works best in well drained soils with low organic
                                          carbon content. However, the technology has been shown to
                                          work in finer, wetter soils (e.g., clays), but at much slower
                                          removal rates [7, p. 5].
    
                                              The extent to which VOCs are dispersed in the soil—
                                          vertically and horizontally—is an important consideration in
                                          deciding whether SVE is preferable to other methods.  Soil
                                          excavation and treatment may be more cost effective when
                                          only a few hundred cubic yards of near-surface soils have
                                          been contaminated. If volume is in excess of 500 cubic yards,
                                          if the spill has penetrated more than 20 or 30 feet, or the
                                          contamination  has spread through an area of several hundred
                                          square feet at a particular depth, then excavation costs begin
                                          to exceed those associated with an SVE system [8] [9]
                                          [10, p. 6].
    
                                             The depth to groundwater is also important. Croundwa-
                                          ter level in some cases may be lowered to increase the volume
                                          of the unsaturated zone.  The water infiltration rate can be
                                                      8-16
                                                                                         Printed on Recycled Paper
    

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                           Tobtol
               Effectiveness of SVE on General
                 Contaminant Groups For Sol
    Contaminant Croups
    
    
    
    -
    1
    *
    
    
    
    
    
    
    
    
    
    
    
    Halogenated volatiles
    Halogenated semivolatiles
    Nonhalogenated volatiles
    Nonhalogenated semivolatiles
    PCBs
    Pesticides
    Dioxins/Furans
    Organic cyanides
    Organic corrosives
    Volatile metals
    Nonvolatile metals
    Asbestos
    Radioactive materials
    Inorganic corrosives
    Inorganic cyanides
    Oxidizers
    Reducers
    fffiectfvcness
    Soil
    m
    V
    •
    •
    Q
    Q
    Q
    Q
    a
    a
    a
    a
    a
    a
    a
    a
    V
    • Demonstrated Effectiveness: Successful treatability test at some
    scale completed
    T Potential Effectiveness: Expert opinion that technology will work
    Q No Expected Effectiveness: Expert opinion that technology will not
    work
    controlled by placing an impermeable cap over the site.  Soil
    heterogeneities influence air movement as well as the loca-
    tion of chemicals. The presence of heterogeneities may make
    it more difficult to position extraction and inlet wells.  There
    generally will be significant differences in the air permeability
    of the various soil strata which will affect the optimum design
    of the SVE facility.  The location of the contaminant on a
    property  and the type  and extent of development in  the
    vicinity of the contamination may favor the installation of an
    SVE system.  For example, if the contamination exists beneath
    a building or beneath an extensive utility trench network,  SVE
    should be considered.
    
        SVE can be  used alone or in combination  with other
    technologies to  treat  a site.  SVE,  in combination with
    groundwater pumping and air stripping, is necessary when
    contamination has reached an aquifer. When the  contamina-
    tion  has  not penetrated into the zone of saturation (i.e.,
    below the water table), it is not necessary to install a ground-
    water pumping system.  A vacuum extraction well will cause
    the water table to rise and will saturate the soil in the area of
    the contamination. Pumping is then required to draw the  wa-
    ter table down and allow efficient vapor venting [11, p. 169].
        SVE may be used at sites not requiring complete remedia-
    tion.  For example, a site may contain VOCs and nonvolatile
    contaminants.   A treatment  requiring excavation might be
    selected for the nonvolatile contaminants. If the site required
    excavation in an enclosure to protect a nearby populace from
    VOC emissions, it would be cost effective to extract the volatiles
    from the soil before excavation. This would obviate the need
    for the enclosure. In this case it would be necessary to vent
    the soil for only a fraction of the time required for complete
    remediation.
    
        Performance data presented in this bulletin should not be
    considered  directly applicable to other Superfund sites.  A
    number of variables such as the specific mix and distribution
    of contaminants affect system performance.  A thorough
    characterization of the site and a well-designed and conducted
    treatability study are highly recommended.
    
        The effectiveness of SVE on general contaminant groups
    for soils is shown in Table 1.  Examples of constituents within
    contaminant groups are provided in the Technology Screen-
    ing Guide For Treatment of CERCLA Soils and Sludges" [12].
    This table is based on the current  available information or
    professional judgment where no information was available.
    The proven effectiveness of the technology for a particular site
    or waste does not ensure that it will  be effective at all sites or
    that the treatment efficiencies achieved will be acceptable at
    other sites.  For the ratings used in  this table, demonstrated
    effectiveness means that, at some scale, treatability tests showed
    that the technology was effective for that particular contami-
    nant and matrix. The ratings of potential effectiveness, or no
    expected effectiveness are both based upon expert judgment
    Where potential effectiveness is indicated, the technology is
    believed capable of successfully treating the contaminant group
    in a particular matrix. When the technology is not applicable
    or will probably not work for a particular combination of
    contaminant group and matrix, a no-expected-effectiveness
    rating is given.  Another source of general  observations and
    average removal efficiencies for different treatability groups is
    contained in the Superfund Land Disposal Restrictions (LOR)
    Guide #6A, "Obtaining a Soil  and Debris Treatability Variance
    for  Remedial Actions," (OSWER Directive 9347.3-06FS, Jury
    1989) [13] and Superfund LDR Guide #6B,  "Obtaining a Soil
    and Debris Treatability Variance for Removal Actions," (OSWER
    Directive 9347.3-07FS, December 1989) [14].
    Limitations
    
        Soils exhibiting low air permeability are more difficult to
    treat with in situ SVE.  Soils with a high organic carbon
    content have a high sorption capacity for VOCs and are more
    difficult to remediate successfully with SVE.  Low soil tem-
    perature lowers a contaminant's vapor pressure, making vola-
    tilization more difficult [11].
    
        Sites that contain a high degree of soil heterogeneity will
    likely offer variable flow and desorption performance, which
    will make remediation difficult.  However, proper design of
    the vacuum extraction system may overcome the problems of
    heterogeneity [7, p. 19] [15].
                                                  Engineering Bulletin: In Situ Soil Vapor Extraction Treatment
                                                           8-17
    

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        It would be difficult to remove soil contaminants with
    low vapor pressures and/or high water solubilities from a site.
    The lower limit of vapor pressure for effective removal of a
    compound is 1 mm Hg abs.  Compounds with high water
    solubilities, such as acetone, may be removed with relative
    ease from arid soils. However, with normal soils (i.e., mois-
    ture content ranging from  10 percent to 20 percent), the
    likelihood of successful remediation drops significantly be-
    cause the moisture in  the soil acts as a sink for the soluble
    acetone.
    Technology Description
    
        Figure 1 is a general schematic of the in situ SVE process.
    After the contaminated area is defined,  extraction wells (1)
    are installed.  Extraction well placement is critical.  Locations
    must be chosen to ensure adequate vapor flow through the
    contaminated  zone  while  minimizing vapor flow through
    other zones [11,  p. 170].  Wells  are typically constructed of
    PVC pipe that is screened through the zone of contamination
    [11]. The screened pipe is placed in a permeable packing; the
    unscreened portion is sealed in a cement/bentonite grout to
    prevent a short-circuited air flow  direct to the surface.  Some
    SVE systems are installed with air injection wells.  These wells
    may either passively take in atmospheric air or actively use
    forced air injection [9]. The system must be designed so that
    any air injected into the system does not result in the escape
    of VOCs to the atmosphere. Proper design of the system can
    also prevent offsite  contamination from entering the area
    being extracted.
    
        The physical dimensions of a particular site may modify
    SVE design. If the vadose zone depth is less than 10 feet and
    the area of the site is quite large, a horizontal piping system or
    trenches may be more economical than conventional wells.
        An  induced air flow draws contaminated vapors and
    entrained water from the extraction wells through headers—
    usually plastic piping—to a vapor-liquid separator (2).  There,
    entrained water is separated and contained for subsequent
    treatment (4).  The contaminant vapors are moved by a
    vacuum blower (3) to vapor treatment (5).
    
        Vapors produced by the process are typically treated by
    carbon adsorption or thermal destruction.  Other methods—
    such as condensation, biological degradation, and ultraviolet
    oxidation—have been applied, but only to a limited extent.
    Process Residuals
    
        The waste streams generated by in situ SVE are vapor and
    liquid treatment residuals (e.g., spent granular activated car-
    bon [GAC]), contaminated groundwater, and soil tailings from
    drilling the wells. Contaminated groundwater may be treated
    and discharged onsite [12, p. 86] or collected and treated off-
    site.  Highly contaminated soil tailings from drilling must be
    collected and may be either cleaned  onsite  or  sent to an
    offsite, permitted facility for treatment by another technology
    such as incineration.
    Site Requirements
    
        SVE systems vary in size and complexity depending on
    the capacity of the system and  the requirements for vapor
    and liquid treatment They are typically transported by vehicles
    ranging from trucks to specifically adapted flatbed semitrailers;
    therefore, a proper staging area for these vehicles must be
    incorporated in the plans.
                                                         Figure 1
                                Process Schematic of the In Situ Soil Vapor Extraction System
                                                                                              Ctoan Mr
           Air Vent or
         Infection Well
                                                      Water Table
    Engineering Bulletin: In Situ Soil Vapor Extraction Treatment
                                                        8-18
    

    -------
        Adequate access roads must be provided to bring mobile
    drilling rigs onsite for construction  of wells and to deliver
    equipment required for the process (e.g., vacuum blowers,
    vapor-liquid separator, emission control devices, CAC canisters).
    
        A small commercial-size SVE system would require about
    i,000 square feet of ground  area for the equipment  This
    area does not include space for the  monitoring wells which
    might cover 500 square feet  Space may be needed for a
    forklift truck to exchange skid-mounted CAC canisters when
    regeneration is required. Large systems with integrated vapor
    and liquid treatment systems will need additional area based
    on vendor-specific requirements.
    
        Standard 440V, three-phase electrical service is needed.
    For many SVE applications, water may be required at the site.
    The quantity of water needed  is vendor- and site-specific.
    
        Contaminated soils or other waste materials are hazard-
    ous, and their handling requires that a site safety plan be
    developed to provide for personnel protection and special
    handling measures. Storage should be provided to hold the
    process product streams until they have been tested to deter-
    mine their acceptability for disposal  or release.   Depending
    upon the site, a  method to store soil tailings from drilling
    operations may be  necessary. Storage capacity will depend
    on waste volume.
    
        Onsite analytical equipment, including gas chromato-
    graphs and organic vapor analyzers  capable of  determining
    site-specific organic compounds for performance assessment,
    make the operation more efficient and provide  better infor-
    mation for process control.
    
    
    Performance Data
    
        SVE, as an in situ process (no excavation is involved), may
    require treatment of the soil to various cleanup levels man-
    dated by federal and state site-specific criteria.  The time
    required to meet a target cleanup level (or performance ob-
    jective) may be estimated by using data obtained from bench-
    scale and pilot-scale tests in a time-predicting mathematical
    model.  Mathematical models can estimate cleanup time to
    reach a target level, residual contaminant levels after a given
    period of operation and can predict location  of hot spots
    through diagrams of contaminant distribution [16].
    
        Table 2 shows the performance of typical SVE applica-
    tions. It lists the site location and size, the contaminants and
    quantity of contaminants removed, the duration of operation,
    and the maximum soil contaminant concentrations before
    treatment and after treatment The data presented for specific
    contaminant removal effectiveness  were obtained, for the
    most part from publications developed by the respective SVE
    system vendors. The quality of this information has not been
    determined.
    
        Midwest Water Resources, Inc.  (MWRI) installed  its
    VAPORTECH™ pumping unit at the Dayton, Ohio site of a
    spill of uncombusted paint solvents caused by a fire in a paint
    warehouse [19]. The major VOC compounds identified were
    acetone, methyl isobutyl ketone (MIBK), methyl ethyl ketone
    (MEK), benzene, ethylbenzene, toluene, naphtha, xylene, and
    other volatile aliphatic and alkyl benzene compounds. The
    site is underlain predominantly  by valley-fill glacial outwash
    within the Great Miami River Valley, reaching a thickness of
    over 200 feet  The outwash is  composed  chiefly of coarse,
    clean  sand  and gravel, with numerous cobbles and small
    boulders. There are two outwash units at the site separated
    by a discontinuous till at depths of 65 to 75 feet The  upper
    outwash forms an unconfined aquifer with saturation at a
    depth of 45 to 50 feet below grade. The till below serves as
    an aquitard between the upper unconfined aquifer and the
    lower confined to semiconfined aquifer. Vacuum withdrawal
    extended to the depth of groundwater at about 40 to 45 feet
    During the first 73 days of operation, the system yielded
    3,720 pounds of volatites  and after 56 weeks of operation,
    had recovered over 8,000 pounds  of VOCs from the site.
    Closure levels for the site  were developed  for groundwater
    VOC levels of ketones only. These soil action levels (acetone,
    810 ug/l; MIBK, 260 ug/l, and MEK, 450 ug/l) were set so that
    waters recharging through contaminated soils would result in
                                                         Table 2.
                               Summary of Performance Data for In Situ Soil Vapor Extraction
    Site
    Industrial - CA [1 7]
    Sheet Metal Plant - Ml [18]
    Prison Const. Site - Ml [19]
    Sherwin-Williams Site - OH [19]
    Upjohn- PR [20][21]
    UST Bellview - fl [7]
    Verona WellfieW - Ml [7][22]
    Petroleum Terminal -
    Owensboro, KY [19]
    SITE Program - Croveland MA [7]
    Size
    -
    5,000 cu yds
    1 65,000 cu yds
    425,000 cu yds
    7,000,000 cu yds
    -
    35,000 cu yds
    1 2,000 cu yds
    6,000 cu yds
    Contaminants
    TCE
    PCE*
    TCA
    Paint solvents
    CCI4
    BTEX
    TCE, PCE, TCA
    Gasoline, diesel
    TCE
    Quantity
    removed
    30kg
    59 kg
    -
    4,100kg
    107,000kg
    9,700kg
    12,700kg
    —
    590kg
    Duration of
    operation
    440 days
    35 days
    90 days
    6 mo
    3yr
    7mo
    Overl yr
    6 mo
    56 days
    Soil concentrations (rag/kg)
    max. before after
    tieotinent CfcuCiiKfit
    0.53
    5600
    3.7
    38
    2200
    97
    1380
    >5000
    96.1
    0.06
    0.70
    0.01
    0.04
    <0.005
    <0.006
    Ongoing
    1.0 (target)
    4.19
        •PCE = Perchkxoethytene
                                                 Engineering Bulletin: In SHu So// Vapor Extraction Treatment
                                                            8-19
    

    -------
    groundwater VOC concentrations at or below regulatory
    standards. The site met all the closure criteria by June 1988.
    
        A limited amount of performance data is available from
    Superfund sites.  The EPA Superfund  Innovative Technology
    Evaluation (SITE) Program's Croveland, Massachusetts, dem-
    onstration of the Terra Vac Corporation SVE process produced
    data that were subjected to quality assurance/quality control
    tests. These data appear in Table 2 [7, p. 29] and Table 3 [7,
    p. 31]. The site is contaminated by trichloroethylene (TCE), a
    degreasing compound which was used by a machine shop
    that is still in operation. The subsurface profile in the test area
    consists of medium sand and gravel just below the surface,
    underlain by finer and silty sands, a clay layer 3 to 7 feet in
    depth, and—below the clay layer—coarser sands with gravel.
    The clay layer or lens acts as a barrier against gross infiltration
    of VOCs into subsequent subsoil strata. Most of the subsur-
    face contamination lay above the clay tens, with the highest
    concentrations adjacent to  it  The SITE data represent the
    highest percentage of contaminant reduction from one of the
    four extraction wells installed for this demonstration test The
    TCE concentration levels are weighted average soil concen-
    trations  obtained by averaging split spoon sample concentra-
    tions  every 2  feet over  the entire 24-foot extraction well
    depth. Table 3 shows the reduction of TCE in the soil strata
    near the same extraction well. The Croveland Superfund Site
    is in the process  of being remediated using this technology
    [2].
    
        The Upjohn facility in Barceloneta, Puerto Rico, is the first
    and, thus far, the only Superfund site  to be remediated with
    SVE. The contaminant removed from this site was a mixture
    containing 65 percent carbon tetrachloride (CCIJ and  35
    percent  acetonitrile [20].  Nearly 18,000 gallons of CCI4 were
    extracted during the remediation, including 8,000 gallons
    that were extracted during a pilot operation conducted from
    January 1983 to April 1984.  The volume of soil treated at the
    Upjohn site amounted to  7,000,000 cubic yards. The respon-
    sible party originally argued that the site should be considered
    clean when soil samples taken from four boreholes drilled in
    the area of high pretest contamination show nondetectable
    levels of CC14.  EPA did not accept this criterion but instead
    required a cleanup criteria of nondetectable levels of CCI4 in all
    the exhaust stacks for 3 consecutive  months [21].  This re-
    quirement was met by the technology and the site was con-
    sidered remediated by EPA.
    
        Approximately 92,000 pounds of contaminants have been
    recovered from the Tyson's Dump site (Region 3) between
    November  1988 and jury 1990.   The site consists of two
    unlined lagoons and surrounding areas formerly used to store
    chemical wastes.  The initial Remedial Investigation identified
    no soil heterogeneities and indicated that the water table was
    20 feet below the surface. The maximum concentration in
    the soil (total  VOCs) was approximately 4 percent  The
    occurence of dense nonaqueous-phase liquids (DNAPLs) was
    limited in areal extent After over 18 months of operation, a
    number of difficulties have been encountered.  Heterogene-
    ities  in soil  grain size, water content, permeability,  physical
    structure and compaction, and in contaminant concentrations
    have been identified.  Soil contaminant concentrations of up
    to 20 percent and widespread distribution of DNAPLs have
    been found. A tar-like substance, which has caused plugging,
    has been found in most of the extraction wells.  After 18
    months of operation, wellhead concentrations of total VOCs
    have decreased by greater than 90 percent [23, p. 28].
    
        As of December 31,1990, approximately 45,000 pounds
    of VOCs had been removed from the Thomas Solvent Raymond
    Road Operable Unit at the Verona Well Field site (Region 5). A
    pilot-scale system was tested in the fall of 1987 and a full-scale
    operation began in March, 1988. The soil at the site consists
    of poorly-graded, fine-to-medium-grained loamy soils under-
    lain by approximately 100 feet of sandstone. Groundwater is
    located 16 to 25 feet below the surface.  Total VOC concen-
    trations  in the combined extraction  well  header have de-
    creased from a high of 19,000 ug/1  in 1987 to approximately
    1,500ug/1  in 1990 [22].
                                                         Tables
               Extraction Well 4:  TCE Reduction In Soil Strata—EPA Site Demonstration (Groveland, MA) [7, p. 31 ]
    Depth (ft)
    0-2
    2-4
    4-6
    6-8
    8-10
    10-12
    12-14
    14-16
    16-18
    18-20
    20-22
    22-24
    Description of strata
    Med. sand w/grave)
    Lt. brown fine sand
    Med. stiff It. brown fine sand
    Soft dk. brown fine sand
    Med. stiff brown sand
    V. stff It. brown med. sand
    V. Stiff brown fine sand w/silt
    M. stff gm-bm clay w/silt
    Soft wet clay
    Soft wet clay
    V. stiff bm med-coaree sand
    V. stiff bm med-coarse w/gravel
    Hydraulic
    Conductivity (cm/s)
    10"
    10"
    ia5
    ia5
    10"
    10"
    10"
    104
    10*
    10*
    10"
    ia5
    Soil TCE concentration (mg/kg)
    Pre-treatment Post-treatment
    2.94
    29.90
    260.0
    303.0
    351.0
    195.0
    3.14
    NO
    ND
    ND
    ND
    6.17
    ND
    ND
    39.0
    9.0
    ND
    ND
    2.3
    ND
    ND
    ND
    ND
    ND
         ND - Nondetectable level
    Engineering Bulletin: In Situ Soil Vapor Extraction Treatment
                                                         8-20
    

    -------
        An SVE pilot study has been completed at the Colorado
    Avenue Subsite of the Hastings (Nebraska) Croundwater Con-
    tamination site (Region 7).  Trichloroethylene (TCE), 1,1,1-
    trichloroethane (TCA), and tetrachloroethylene (PCE) occur in
    two distinct unsaturated soil zones. The shallow zone, from
    the surface to a depth of 50 to 60 feet, consists of sandy and
    clayey silt. TCE concentrations as high as 3,600 ug/1 were
    reported by EPA in this soil zone. The deeper zone consists of
    interbedded sands, silty sands, and gravelly sands extending
    from about 50 feet to 120 feet.  During the first 630 hours of
    the pilot study (completed October 11, 1989), removal of
    approximately 1,488 pounds of VOCs  from a deep zone
    extraction well and approximately 127 pounds of VOCs from
    a shallow zone extraction well were reported.   The data
    suggest that SVE is a viable remedial technology for both soil
    zones [24].
    
        As of November, 1989, the SVE system at the Fairchild
    Semi-conductor Corporation's former San Jose site (Region 9)
    has reportedly removed over 14,000 pounds of volatile con-
    taminants. Total contaminant mass removal rates for the SVE
    system fell below 10 pounds per day on October 5,1989 and
    fell below 6 pounds per day in December, 1989. At that time,
    a proposal to terminate operation of the SVE  system was
    submitted to the Regional Water Quality Control  Board for
    the San Francisco Bay Region  [25, p.3].
    
        Resource  Conservation and Recovery Act (RCRA) LDRs
    that require treatment of wastes to best demonstrated avail-
    able technology (BOAT) levels prior to land disposal may
    sometimes be determined to be applicable or relevant and
    appropriate requirements for CERCLA response actions.  SVE
    can produce a treated waste  that meets treatment levels set
    by BDAT but may not reach these treatment levels in all cases.
    The ability to meet required treatment  levels is dependent
    upon the specific waste constituents and the waste matrix. In
    cases where SVE does not meet these levels,  it still may, in
    certain situations, be selected for use at the site if a treatability
    variance establishing alternative treatment levels is obtained.
    EPA has made the treatability variance process available in
    order to ensure that LDRs do not unnecessarily restrict use of
    alternative and innovative treatment technologies.  Treatabil-
    ity variances are justified for handling complex soil and debris
    matrices.  The following guides describe when and how to
    seek a treatability variance for soil and debris:  Superfund LDR
    Guide #6A, "Obtaining a Soil and Debris Treatability Variance
    for  Remedial Actions" (OSWER Directive 9347.3-06FS, July
    1989) [13], and Superfund LDR Guide #6B, "Obtaining a Soil
    and Debris Treatability Variance for Removal Actions" (OSWER
    Directive 9347.3-07FS, December 1989) [14]. Another ap-
    proach could be to use other treatment techniques in series
    with SVE to obtain desired treatment levels.
    
    Technology Status
    
        During 1989, at least 17 RODs specified  SVE  as part of
    the remedial action [5]. Since 1982, SVE has been selected as
    the remedial action, either alone or in conjunction with other
    treatment technologies, in more than 30 RODs for Superfund
    sites [2] [3] [4] [5] [6]. Table 4 presents the location, primary
    contaminants, and status for these sites [3]  [4] [5].  The
    technology also has been used to clean up numerous under-
    ground gasoline storage tank spills.
    
        A  number of variations of the SVE system have been
    investigated at Superfund sites.  At the Tinkhams Garage Site
    in New Hampshire (Region 1), a pilot study indicated that
    SVE, when used in conjunction with ground water pumping
    (dual extraction), was capable of treating soils  to the 1  ppm
    clean-up goal [26,  3-7] [27]. Soil dewatering studies  have
    been conducted to determine the feasability of lowering the
    water table to permit the use of  SVE at the Bendix, PA Site
    (Region 3) [28]. Plans are underway to remediate a stockpile
    of 700 cubic yards of excavated soil at the Sodeyco Site in Mt.
    Holly, NC using SVE [29].
    
        With the exception of the Barceloneta site, no Superfund
    site has yet been cleaned up to the performance objective of
    the technology. The performance objective is a site-specific
    contaminant concentration, usually in soil. This objective may
    be calculated with mathematical models  with which EPA
    evaluates delisting  petitions for wastes contaminated  with
    VOCs [30]. It also may be possible to use a TCLP test on the
    treated soil with a corresponding drinking water  standard
    contaminant level on  the leachate.
    
        Most of the hardware components of SVE are available
    off the shelf and represent no significant problems of avail-
    ability.  The configuration, layout, operation, and design of
    the extraction and monitoring wells and process components
    are site specific.  Modifications may also be required as dic-
    tated by actual operating conditions.
    
        On-line availability of the full-scale systems described in
    this bulletin is not documented.  System  components are
    highly reliable and are capable of continuous operation for
    the duration of the cleanup. The system can be shut down, if
    necessary, so that component failure can be identified and
    replacemnts made quickly for minimal downtime.
    
        Based on available data, SVE treatment  estimates are
    typically SSO/ton for  treatment of soil.  Costs range from as
    low as SI 0/ton to as much as SI 50/ton [7]. Capital costs for
    SVE consist of extraction and monitoring well construction;
    vacuum blowers (positive displacement or centrifugal); vapor
    and liquid treatment systems piping, valves, and fittings (usu-
    ally plastic); and instrumentation [31].  Operations and main-
    tenance costs include labor, power, maintenance, and moni-
    toring activities. Offgas and collected groundwater treatment
    are the largest cost items in this list; the cost of  a cleanup can
    double if both are treated  with  activated  carbon.  Electric
    power costs vary by  location (i.e., local utility  rates and site
    conditions).  They may be as low as 1 percent or as high as 2
    percent of the total project cost.
    
        Caution  is recommended in using  these  costs  out of
    context, because the  base year of the estimates vary.  Costs
    also are highly variable due to site variations as well as soil and
    contaminant characteristics that impact the SVE process. As
    contaminant concentrations are  reduced, the cost effective-
    ness of an SVE system may decrease with time.
                                                  Engineering Bulletin: In Situ Soil Vapor Extraction Treatment
                                                          8-21
    

    -------
                                                  Table 4
                                Superfund Sites Specifying SVE as a Remedial Action
    Site
    GroveUndWeUs1&2
    
    Kellogg-Deering Well Field
    South Municipal Water
    Supply WeB
    Tmkham Garage
    Wells G8tH
    FAA Technical Center
    Upjohn Manufacturing Co.
    Allied Signal Aerospace-
    Bendix Flight System Div.
    Henderson Road
    
    Tyson's Dump
    
    Stauffer Chemical
    Stauffer Chemical
    Sodyeco
    Kysor Industrial
    Long Prairie
    MIDCO1
    
    
    Miami County Incinerator
    Pristine
    
    Seymour RecycBng
    
    
    Verona Well Field
    Wausau Groundwater
    Contamination
    South Valley/
    General Electric
    Hastings Groundwater
    Contamination
    
    Sand Creek Industrial
    Fairchild Semiconductor
    
    
    Fairchild Semiconductor/
    MTV-1
    
    Fairchild Semiconductor/
    MTV-2
    
    Intel Corporation
    
    
    Raytheon Corporation
    
    
    Motorola 52nd Street
    Phoenix-Goodyear Airport
    Area (also UtchfieW
    AiroortArea)
    Location (Region)
    Groveland, MA(1)
    
    Norwalk, CT(1)
    Peterborough, NH(1)
    
    Londonderry, NH(1)
    Wobum, MA(1)
    Atlantic County, NJ (2)
    Barcetoneta, PR (2) .
    South Montrose, PA (3)
    
    
    upper Menon lownsnip.
    PA (3)
    Upper Merion Township,
    PA (3)
    Cold Creek, AL (4)
    Lemoyne, AL (4)
    MtHoKy, NC(4)
    Cadillac, Ml (S)
    Long Prairie, MN (5)
    Gary, IN (5)
    
    
    Troy, OH (S)
    Cincinnati, OH (5)
    
    Seymour, IN (S)
    
    
    Battle Creek, Ml (5)
    Wausau, Wl (5)
    
    Albuquerque, NM (6)
    
    Hastings, NE (7)
    
    
    Commerce City, CO (8)
    San lose, CA (9)
    
    
    Mountain View, CA (9)
    
    
    Mountain View, CA (9)
    
    
    Mountain View, CA (9)
    
    
    Mountain View, CA (9)
    
    
    Phoenix, AZ (9)
    Goodyear, AZ (9)
    
    
    Primary Contaminants
    TCE
    
    PCE, TCE, and BTX
    PCE, TCE, Toluene
    
    PCE, TCE
    PCE, TCE
    BTX, PAHs, Phenols
    CO*
    TCE
    
    PCE, TCE, Toluene, Benzene
    
    PCE, TCE, Toluene, Benzene,
    Trichloropropane
    CCL«, pesticides
    CCL4, pesticides
    TCE, PAHs
    PCE, TCEJoluene, Xylene
    PCE, TCE, DCE, Vinyl chloride
    BTX, TCE, Phenol, Dichloro-
    methane, 2-Butanone,
    Chlorobenzene
    PCE; TCE; Toluene
    Benzene; Chloroform; TCE;
    1,2-DCA; 1, 2-DCE
    TCE; Toluene; Chkxomethane;
    ds-1, 2-DCE; 1,1,1-DCA;
    CnJorofofCTi
    PCE, TCA
    PCE, TCE
    
    Chlorinated solvents
    
    CCLf , Chloroform
    
    
    PCE, TCE, pesticides
    PCE, TCA, DCE, DCA,
    Vinyl chlorides. Phenols,
    and Freon
    PCE, TCA, DCE, DCA,
    Vinyl chlorides, Phenols,
    and Freon
    PCE, TCA, DCE, DCA,
    Vinyl chlorides. Phenols,
    and Freon
    PCE, TCA, DCE, DCA,
    Vinyl chlorides, Phenols,
    and Freon
    PCE, TCA, DCE, DCA,
    Vinyl chlorides. Phenols,
    and Freon
    TCA, TCE, CCL., , Ethylbenzene
    TCE, DCE, MEK
    
    
    Status
    STTE demonstration complete [2][7]
    Full-scale Remediation in design
    Pre-design [3] [5] [6]
    Pre-design completion expected in the fall
    of 1991 I3][5][6]
    Pre-design pilot study completed [26] [27]
    In design [3] [5]
    In design [3] [5]
    Project completed hi 1988 {20] 121]
    Pre-design tests and dewatering [28]
    study completed
    ***** mm
    
    In operation (since 1 1 /88) [23]
    
    Pre-design [5] [6]
    Pre-design [5] [6]
    Design approved [29]
    In design; pilot studies in progress [3] [5] [6]
    SVE construction expected in the Fall of 1991
    In Design [3] [5] [6]
    
    
    Pre-design p] [5] [6]
    Pre-design [3] [6]
    
    Pre-design investigation completed [32}
    
    
    Operational since 3/81 [22]
    PreHdesign {3]£S][oJ
    
    Pilot studies scheduled for [4] [6]
    Summer of 1991
    P8ot studies completed for [24]
    Colorado Ave. & Far-Marco
    subsrtes
    Pilot study completed [33]
    Operational since 1 988, [25]
    Currently conducting
    resaturatkxi studies
    Pre-design [3] [5]
    
    
    Pie-design [3][5]
    
    
    Pre-design [3] [5]
    
    
    Pre-design [3J[S]
    
    
    Pre-design [3] [4] [6]
    Norm Unit - In design [34)
    South Unit -pilot study completed
    
    Engineering Bulletin: In Situ Soil Vapor Extraction Treatment
                                               8-22
    

    -------
    EPA Contact
    
        Technology-specific questions regarding SVE may be di-
    rected to:
    
        Michael Gruenfeld
        U.S. Environmental Protection Agency
        Releases Control Branch
        Risk Reduction Engineering Laboratory
        2890WoodbridgeAve.
        Building 10(MS-104)
        Edison, NJ  08837
        (FTS) 340-6924 or (908) 321-6924
    Acknowledgements
        This bulletin was prepared for the U.S. Environmental
    Protection Agency, Office of Research and Development (ORD),
    Risk Reduction Engineering Laboratory (RREL), Cincinnati, Ohio,
    by Science Applications International Corporation (SAIC), and
                  Foster Wheeler Enviresponse Inc. (FWEI) under contract No.
                  68-C8-0062.  Mr. Eugene Harris served as the EPA Technical
                  Project Monitor.  Gary Baker was SAIC's Work Assignment
                  Manager.  This bulletin was authored by Mr. Pete Michaels of
                  FWEI. The author is especially grateful to Mr. Bob Hillger and
                  Mr. Chi-Yuan Fan of EPA, RREL, who have contributed signifi-
                  cantly by serving as technical consultants during the devel-
                  opment of this document.
    
                      The following other Agency and contractor personnel
                  have contributed their time and comments by participating in
                  the expert review meetings and/or peer reviewing the docu-
                  ment
                  Or. David Wilson
                  Dr. Neil Hutzler
                  Mr. Seymour Rosenthal
                  Mr. Jim Rawe
                  Mr. Clyde Dial
                  Mr. joe Tillman
    Vanderbilt University
    Michigan Technological University
    FWEI
    SAIC
    SAIC
    SAIC
    8
    Engineering Bulletin: In Situ Soil Vapor Extraction Treatment
                8-23
    

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                                                  REFERENCES
      1.  Cheremesinoff, Paul N. Solvent Vapor Recovery and
         VOC Emission Control. Pollution Engineering, 1986.
      2.  Records of Decision System Database, Office of Emer-
      3.
     4.
     5.
     6.
     7.
     8
         gency and Remedial Response, U.S. Environmental
         Protection Agency, 1989.
         Innovative Treatment Technologies:  Semi-Annual Status
         Report. EPA/540/2-91/001, January 1991.
         ROD Annual Report, FY 1988. EPA/540/8-89/006, July
         1989.
         ROD Annual Report, FY 1989.  EPA/540/8-90/006,
         April 1990.
         Personal Communications with Regional Project
         Managers, April, 1991.
         Applications Analysis Report — Terra Vac In Situ
         Vacuum Extraction System. EPA/540/A5-89/003, U.S.
         Environmental Protection Agency, 1989. (SITE Report).
        CH2M Hill, Inc.  Remedial Planning/Field Investigation
        Team. Verona Well Field-Thomas Solvent Co. Operable
        Unit Feasibility Study. U.S. Environmental Protection
        Agency, Chicago, Illinois, 1985.
     9.  Payne, F.C., et al. In Situ Removal of Purgeable Organic
        Compounds from Vadose Zone Soils. Presented at
        Purdue Industrial Waste Conference, May 14,1986.
     10. Hutzler, Neil)., Blaine E. Murphy, and John S. Cierke.
        State of Technology Review — Soil Vapor Extraction
        Systems. U.S. Environmental Protection Agency,
        Cincinnati, Ohio, 1988.
     11. Johnson, P.C., et al. A Practical Approach to the Design,
        Operation, and Monitoring of In Situ Soil Venting
        Systems. Croundwater Monitoring Review, Spring,
        1990.
     12. Technology Screening Guide for Treatment of CERCLA
        Soils and Sludges. EPA/540/2-88/004, U.S. Environmen-
        tal Protection Agency, 1988.  pp. 86-89.
     13. Superfund LDR Guide #6A: Obtaining a Soil and Debris
        Treatability Variance for Remedial Actions. OSWER
        Directive 9347.3-06FS, U.S. Environmental Protection
        Agency, 1989.
     14. Superfund LDR Guide #6B:  Obtaining a Soil and Debris
        Treatability Variance for Removal Actions.  OSWER
        Directive 9347.3-07FS, U.S. Environmental Protection
        Agency, 1989.
     IS. Michaels, Peter A., and Mary K. Stinson. Terra Vac In
        Situ Vacuum Extraction Process SITE Demonstration. In:
        Proceedings of the Fourteenth Annual Research Sympo-
        sium.  EPA/600/9-88/021, U.S. Environmental Protec-
        tion Agency, 1988.
    16. Mutch, Robert D., Jr., Ann N. Clarke, and David j.
        Wilson. In Situ Vapor Stripping Research Project: A
        Progress Report — Soil Vapor Extraction Workshop.
        USEPA Risk Reduction Engineering Laboratory, Releases
        Control Branch, Edison, New Jersey, 1989.
     17.  Ellgas, Robert A., and N. Dean Marachi. Vacuum
         Extraction of Trichloroethylene and Fate Assessment in
         Soils and Groundwater:  Case Study in California,  joint
         Proceedings of Canadian Society of Civil Engineers -
         ASCE National Conferences on Environmental Engineer-
         ing, 1988.
     18.  Groundwater Technology Inc., Correspondence from
         Dr. Richard Brown.
     19.  Midwest Water Resource, Inc.; Correspondence from
         Dr. Frederick C. Payne.
     20.  Geotec Remedial Investigation Report and Feasibility
         Study for Upjohn Manufacturing Co. Barceloneta,
         Puerto Rico, 1984.
     21.  Geotec Evaluation of Closure Criteria for Vacuum
         Extraction at Tank Farm. Upjohn Manufacturing
         Company, Barceloneta, Puerto Rico, 1984.
     22.  CH2M Hill, Inc. Performance Evaluation Report Thomas
         Solvent Raymond Road Operable Unit. Verona Well
         Field Site, Battle Creek, Ml, April 1991.
     23.  Terra Vac Corporation. An Evaluation of the Tyson's Site
         On-Site Vacuum Extraction Remedy Montgomery
         County, Pennsylvania, August 1990.
     24.  IT Corporation. Final Report-Soil Vapor Extraction Pilot
         Study, Colorado Avenue Subsite, Hastings Ground-
         Water Contamination Site, Hastings, Nebraska, August,
         1990.
     25.  Canonie Environmental.  Supplement to Proposal to
         Terminate In-Situ Soil Aeration  System Operation at
         Fairchild Semiconductor Corporation's Former San Jose
         Site, December 1989.
     26.  Malcom Pirnie, Tinkhams Garage Site, Pre-Design Study,
         Londonderry, New Hampshire - Final Report, July 1988.
     27.  Terra Vac Corp., Tinkhams Garage Site Vacuum Extrac-
         tion Pilot Test, Londonderry, New Hampshire, July 20,
         1988.
     28.  Environmental Resources Management, Inc.  Dewater-
         ing Study For The TCE Tank Area - Allied Signal Aero-
         space, South Montrose, PA, December 1990.
     29.  Letter Correspondence from  Sandoz Chemicals Corpo-
         ration to the State of North Carolina Department of
         Environmental Health, and Natural Resources, RE:
         Remediation Activities in CERCLA C Area (Sodeyco)
         Superfund Site, March 28,1991.
     30.  Federal Register, Volume 50,  No. 229, Wednesday,
        November 27, 1985, pp. 48886-48910.
    31.  Assessing UST Corrective Action Technologies: Site
        Assessment and Selection of Unsaturated Zone Treat-
        ment Technologies. EPA/600/2-90/011, U.S.  Environ-
        mental Protection Agency, 1990.
    32.  Hydro Geo Chem, Inc. Completion Report, Pre-Design
        Investigation for a Vapor Extraction at the Seymour Site,
        Seymour, Indiana, February 1990.
    Engineering Bulletin: In Situ Soil Vapor Extraction Treatment
                                                        8-24
    

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     33. Groundwater Technology, Inc Report of Findings -           34. Hydro Ceo Chem, Inc Results and Interpretation of the
        Vacuum Extraction Pilot Treatability at the Sand Creek            Phoenix Goodyear Airport SVE Pilot Study, Goodyear,
        Superfund Site (OU-1), Commerce City, Colorado,                Arizona, May 1989.
        March 1990.
    10                                        Engineering Bulletin: In Situ Soil Vapor Extraction Treatment
                                                       8-25
    

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        8.17
      Technology Profile
    EXHIBIT 6 - SITE TECHNOLOGY PROFILE - TOXIC TREATMENTS (USA),
    INC.
                     DEMONSTRATION                             fit
                         PROGRAM                                 w
                            TOXIC TREATMENTS (USA) INC.
                                (In-Situ Steam/Air Stripping)
     TECHNOLOGY DESCRIPTION:
    
     In   this   technology,   a  transportable
     "detoxifier" treatment unit is used for in-situ
     steam and air stripping of volatile organics
     from contaminated soil.
    
     The two main  components of the on-site
     treatment equipment are the process tower
     and process train (Figure  1).  The process
     tower contains two counter-rotating hollow-
     stem drills, each with a modified cutting bit
     5 feet in diameter, capable of operating to a
     27-foot depth.    Each drill contains  two
     concentric pipes.  The inner pipe is used to
     convey steam to the rotating cutting blades.
     The steam is supplied by an oil-fired boiler
     at 450"F and 450 psig.   The outer pipe
     conveys air at approximately 300°F and 250
     psig to the rotating blades.
    
     Steam is piped  to the top  of the  drills and
     injected  through  the cutting blades.   The
     steam heats the ground being  remediated,
                                  increasing the vapor pressure of the volatile
                                  contaminants and thereby increasing the rate
                                  at which they can be stripped.  Both the air
                                  and steam serve as carriers to convey these
                                  contaminants to the  surface.  A metal box,
                                  called a shroud, seals the process area above
                                  the  rotating cutter blades from  the outside
                                  environment,   collects   the   volatile
                                  contaminants,  and ducts them to the process
                                  train.
    
                                  In the process train, the volatile contaminants
                                  and the water vapor are removed  from the
                                  off-gas  stream  by  condensation.    The
                                  condensed  water  is separated from  the
                                  contaminants  by  distillation,  then filtered
                                  through  activated  carbon   beds  and
                                  subsequently used as make-up water for a wet
                                  cooling tower.    Steam is  also  used  to
                                  regenerate the activated carbon beds and as
                                  the  heat source  for distilling  the volatile
                                  contaminants  from  the condensed   liquid
                                  stream.  The recovered concentrated organic
                                  liquid can be recycled or used as a fuel in an
                                  incinerator.
                                                                    Activated Cwtan
                                                                    Syttem
               Fl(ire I.
                                        Typical deUMdfer lyitca If firm
                                        ftowdUfnn.
    Source: The Superfund Innovative Technology Evaluation Program: Technology Profiles,
           EPA/540/5-90/006 (1990).
                                                  8-26
    

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    WASTE APPLICABILITY:
    
    This technology is  applicable to organic
    contaminants  such  as  hydrocarbons and
    solvents with sufficient vapor pressure in the
    soil. The  technology is not limited by soil
    particle size,  initial  porosity,  chemical
    concentration, or viscosity.
    STATUS:
    
    A SITE demonstration was  performed the
    week of September 18, 1989 at the Annex
    Terminal,  San Pedro, CA.   Twelve  soil
    blocks  were treated for VOCs and SVOCs.
    Various liquid samples were collected from
    the process during operation, and the process
    operating procedures were closely monitored
    and recorded.  Post-treatment soil samples
    were collected and analyzed  by EPA 8240
    and 8270.  In January 1990, 6 blocks which
    had been previously treated in the  saturated
    zone were analyzed for EPA 8240  and 8270
    chemicals.    Currently,   the Technology
    Evaluation   Report   has  obtained  EPA
    clearance for publication. The Application
    Analysis Report is being prepared.
    DEMONSTRATION RESULTS:
    
    The following results were obtained during
    the SITE demonstration of the technology:
    
    •    Greater than 85 percent of the VOCs
         in the soil were removed.
    
    •    As much as 55 percent of SVOCs in
         the soil were removed.
    
    •    Fugitive air emissions from the process
         were very low.
    
    •    No   downward  migration   of
         contaminants occurred due to the soil
         treatment.
    FOR FURTHER INFORMATION:
    
    EPA Project Manager
    Paul dePercin
    U.S. EPA
    Risk Reduction Engineering Laboratory
    26 West Martin Luther King Drive
    Cincinnati, Ohio 45268
    513-569-7797
    FT&  684-7797
    
    Technology Developer Contact
    Phillip N. LaMori
    Toxic Treatments (USA) Inc.
    151 Union Street
    Suite 155
    San Francisco,  California 94111
    415-391-2113
    
    or
    
    P.O. Box 789
    San Pedro, CA  90733
    213-514-0881
    November 1990
                                             8-27
    

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     8.18
    EXHIBIT 7 - SITE TECHNOLOGY PROFILE - AWD TECHNOLOGIES, INC.
    Technology Profile
                      DEMONSTRATION
                          PROGRAM
                             AWD TECHNOLOGIES, INC.
             (Integrated Vapor Extraction and Steam Vacuum Stripping)
    TECHNOLOGY DESCRIPTION:
    
    The  integrated  AquaDetox/SVE  system
    simultaneously treats ground water and soil
    contaminated  with   volatile   organic
    compounds (VOCs).  The integrated system
    consists  of   two  basic  processes:    an
    AquaDetox moderate vacuum stripping tower
    that  uses low-pressure  steam  to  treat
    contaminated  ground water; and a soil gas
    vapor extraction/reinjection (SVE) process to
    treat contaminated soil.  The two processes
    form a closed-loop  system that provides
    simultaneous   in-situ   remediation   of
    contaminated ground water and soil with no
    air emissions.
    
    AquaDetox   is   a  high  efficiency,
    countercurrent   stripping   technology
    developed by  Dow Chemical Company.  A
    single-stage unit will typically reduce up to
    99.99 percent of VOCs  from water.  The
    SVE system uses a vacuum to treat a VOC-
    contaminated soil mass, inducing a flow of
                                  air through the soil and removing vapor phase
                                  VOCs with the extracted soil gas. The soil gas
                                  is then treated by carbon  beds  to  remove
                                  additional  VOCs  and reinjected into  the
                                  ground.   The AquaDetox and SVE system
                                  (Figure 1) share a granulated activated carbon
                                  (GAC) unit.  Noncondensable vapor from the
                                  AquaDetox system is combined with the vapor
                                  from the SVE compressor and decontaminated
                                  by the GAC unit. By-products of the system
                                  are  a free-phase  recyclable  product  and
                                  treated water.  Mineral regenerable carbon will
                                  require disposal after approximately three
                                  years.
    
                                  A key component of the closed-loop system
                                  is a vent header unit designed to collect the
                                  noncondensable  gases  extracted  from  the
                                  ground water  or air  that may leak into the
                                  portion  of  the process  operating  below
                                  atmospheric pressure. Further, the steam used
                                  to regenerate the carbon beds is condensed and
                                  treated in the AquaDetox system.
                 Figure 1.  Zero air emissions integrated AquaDetox/SVE system.
    Source: The Superfund Innovative Technology Evaluation Program: Technology Profiles
          EPA/540/5-90/006 (1990).
                                            8-28
    

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    WASTE APPLICABILITY:
    
    This technology removes  VOCs,  including
    chlorinated hydrocarbons, in ground water and
    soil. Sites with contaminated ground water
    and soils containing trichloroethylene (TCE),
    perchloroethylene (PCE), and other VOCs are
    suitable for  this on-site  treatment process.
    AquaDetox is capable of effectively removing
    over 90 of the 110 volatile compounds listed in
    40 CFR Part 261, Appendix VIII.
    STATUS:
    
    The AWD AquaDetox/SVE system is currently
    being used  at  the  Lockheed  Aeronautical
    Systems Company in Burbank, California.  At
    this site,  the system is treating ground water
    contaminated with as much as 2,200 ppb of
    TCE and 11,000 ppb PCE; and soil gas with a
    total  VOC  concentration   of  6,000  ppm.
    Contaminated ground water is being treated at
    a rate of up to 1,200  gpm  while soil gas is
    removed and treated at a rate of 300 cfm. The
    system occupies approximately  4,000 square
    feet.
    
    A SITE demonstration project was evaluated
    as part of the ongoing remediation  effort at
    the San Fernanco Valley Ground-Water Basin
    Superfund  site  in   Burbank,  California.
    Demonstration  testing was conducted  in
    September 1990.  Demonstration results  are
    currently being prepared and are expected to
    be published in early 1991.
    FOR FURTHER INFORMATION:
    
    EPA Project Managers:
    Norma Lewis and Gordon Evans
    U.S. EPA
    Risk Reduction Engineering Laboratory
    26 West Martin Luther King Drive
    Cincinnati, Ohio  45268
    513-569-7665 and 513-569-7684
    FTS:  684-7665 and FT&  684-7684
    
    Technology Developer Contact:
    David Bluestein
    AWD Technologies, Inc.
    49 Stevenson Street, Suite 600
    San Francisco, California 94105
    415-227-0822
                                              8-29
    

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     8.19
    EXHIBIT 8 - SITE TECHNOLOGY PROFILE - TERRA VAC, INC.
    Technology Profile
                      DEMONSTRATION
                           PROGRAM
                                     TERRA VAC, INC.
                                (In-Situ Vacuum Extraction)
    TECHNOLOGY DESCRIPTION:
    
    In-situ vacuum extraction technology is the
    process  of removing  and treating volatile
    organic compounds (VOCs) from the vadose
    or unsaturated zone of soils. Often, these
    compounds can be removed from the vadose
    zone before they contaminate ground water.
    In this technology, a well is used to extract
    subsurface organic  contaminants:    The
    extracted contaminant stream passes through
    a vapor/liquid separator, and the resulting
    off-gases  undergo  treatment,  before being
    released into the atmosphere.  Removing
    VOCs from the vadose zone using a vacuum
    is a patented process.
    
    The   technology  uses  readily  available
    equipment such as extraction and monitoring
    wells,  manifold  piping,  a  vapor/liquid
    separator, a vacuum pump, and an emission
    control device,  such as an activated carbon
    canister.    Once a contaminated  area is
    completely defined,  an extraction well is
    installed  and  connected by  piping to a
    vapor/liquid separator device.
    
    A  vacuum  pump  draws  the  subsurface
    contaminants   through  the  well,  to   the
    separator device, and through a treatment
                                   system consisting of activated  carbon or a
                                   catalytic  oxidizer before  the  air stream  is
                                   discharged to the atmosphere.   Subsurface
                                   vacuum  and soil vapor concentrations are
                                   monitored using vadose zone monitoring wells.
    
                                   The  technology   does  not  require  soil
                                   excavation, and is not limited by depth. The
                                   technology  works  best  at sites  that are
                                   contaminated  by liquids  with high  vapor
                                   pressures. The success of the system depends
                                   on  site conditions,  soil properties,  and the
                                   chemical  properties of the contaminants. The
                                   process works in soils of low  permeability
                                   (clays) if the soil  has  sufficient air-filled
                                   porosity.  Depending on the soil type and the
                                   depth to ground water, the radius of influence
                                   of a single extraction well can range from tens
                                   to hundreds of feet.
    
                                   Typical   contaminant  recovery  rates  range
                                   between 20 and 2,500 pounds per day, and are
                                   a function of the degree of contamination at
                                   the  site.   Typically the more volatile the
                                   organic  compound, the  faster  the  process
                                   works. The process is cost-effective at sites
                                   where contaminated soils are predominantly
                                   above or  below the water table; dual vacuum
                                   extraction systems have  been  designed for
                                   both  vapor  and   ground-water  recovery
                                   (Figure 1).
    >
    
    ,1
                                                              Primary
                                                              Activated
                                                              Carbon
                                                              Canisters
                         Figure 1.  Process diagram for in-tltu vacuum extraction.
     Source: The Superfund Innovative Technology Evaluation Program;  Technology Profiles,
            EPA/540/5-90/006 (1990).
    
                                               8-30
    

    -------
    WASTE APPLICABILITY:
    
    This technology is applicable to organic
    compounds that are volatile or semivolatile at
    ambient temperatures in  soils and ground
    water.  Contaminants should have a Henry's
    constant of  0.001  or higher for effective
    removal.
    
    STATUS:
    
    The technology was first applied  at  a
    Superfund site in Puerto Rico, where carbon
    tetrachloride   had   leaked   from   an
    underground storage  tank. In-situ vacuum
    extraction processes have been used at more
    than 100 waste sites across the United States,
    such as the Verona Wells Superfund Site in
    Battle  Creek, Michigan,  which contains
    trichloroethylene  and contaminants  from
    solvent  storage   and  spills.     A   field
    demonstration of the process was performed
    as  part  of  the  SITE   Program at  the
    Groveland   Wells   Superfund   site   in
    Groveland,   Massachusetts,   which  is
    contaminated by trichloroethylene (TCE).
    
    The Technology Evaluation  Report  and
    Applications Analysis Report have  been
    published.
    
    DEMONSTRATION RESULTS:
    
    The in situ vacuum extraction demonstration
    at Groveland Wells Superfund site used four
    extraction wells to pump contaminants to the
    process system.  Four monitoring wells were
    used to measure the impact of treatment on
    site  contamination.    During  the   SITE
    demonstration,  1,300 pounds  of volatile
    organics, mainly TCE, were extracted during
    a 56-day operational period. The volatiles
    were removed from both  highly permeable
    strata and low  permeability  clays.    The
    process achieved nondetectable  levels of
    VOCs in the soil at some locations at the test
    area. The VOC concentration in soil gas was
    reduced 95 percent.
    APPLICATIONS ANALYSIS
    SUMMARY:
    
    The Terra Vac system was  tested at several
    Superfund and non-Superfund sites.  These
    field  evaluations  yielded   the  following
    conclusions:
    
    •      The  process   represents  a  viable
           technology  to fully  remediate a site
           contaminated  with  volatile  organic
           compounds.     Cleanup   to   non-
           detectable   levels  in  soil  can  be
           achieved.
    
    •      The major considerations in applying
           this technology are:  volatility  of the
           contaminants (Henry's constant), and
           the site soil porosity.
    
    •      The  process   performed   well  in
           removing volatile organic compounds
           from soil with measured permeabilities
           of 10"* to IO"8 cm/sec.
    
    •      Pilot demonstrations are  necessary at
           sites   with  complex  geology  or
           contaminant distributions.
    
    •      Based  on  available  data,  treatment
           costs are typically $40 per ton, but can
           range between $10 and $150 per ton
           depending upon requirements for off-
           gas or wastewater treatment.
    FOR FURTHER INFORMATION:
    
    EPA Project Manager
    Mary K. Stinson
    U.S. EPA
    Risk Reduction Engineering Laboratory
    Woodbridge Avenue
    Edison, New Jersey  08837
    908-321-6683
    FTS: 340-6683
    
    Technology Developer Contact
    James Malot
    Terra Vac, Inc.
    356 Fontaleza Street
    P.O. Box 1591
    San Juan, Puerto Rico 00903
    809-723-9171
                                           8-31
    

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         8.20
    EXHIBIT 9 - IN SITU SOIL DECONTAMINATION BY RADIO-FREQUENCY
    HEATING
                      IN SITU SOIL  DECONTAMINATION  BY
                             RADIO-FREQUENCY HEATING
     RDV 90-1
     SYNOPSIS:
     This technology can  be  applied to
     cleanup of soils contaminated by volatile
     and semivolatile  petroleum  and
     solvents.
      Radio-frequency heating is perform-
     ed by applying electromagnetic energy
     to the radio-frequency band. The energy
     is delivered by electrodes placed in
     holes drilled through  the soil. The
     mechanism of heat generation is similar
     to that of a microwave  oven and does
     not rely on the thermal properties of the
     soil matrix.
      The power source for the process is
     a modified radio transmitter. The exact
     frequency of operation is selected after
     evaluation of the dielectric properties of
     the soil matrix and the size of the area
     requiring treatment.
      The gases and vapors formed in the
     soil matrix can be recovered at the sur-
     face or through the electrodes used for
     the heating process. Condensation and
     collection of the concentrated vapor
     stream are used to capture the contami-
     nant above ground.
      A field  test was performed at the Volk
     Field Air National Guard Base, Camp
     Douglas, Wise. The field test revealed
     that 94 to 99 percent decontamination
     of a 500  ft3 block of soil was achieved
     during a  12-day treatment period.
      The block of soil, measuring 6 feet by
     12 feet by 7 feet,  was heated  to a
     temperature range  of 150  to  160
     degrees Celsius. Analysis of numerous
     pre- and  posttest soil samples has in-
    dicated that, on the average, 99 percent
     of the volatile aromatics and aliphatics
     had been removed from the 500-cubic
    foot  heated volume; 94 percent of
     semivolatile aliphatics and  99  percent
    of the semivolatile aromatics were also
     removed.
      Removal of higher boiling point con-
                                                                       November 90
                                       RADIO FREQUENCY (RF)
                                        SOIL CONTAMINATION
                      VAPOR COLLECTION. "
                        AND RF SHIELD
                    Diagram of RF soil venting.
    
                    taminants also occurs from the steam
                    distillation provided by native moisture.
                    The soils at Volk Field are predominant-
                    ly fine to coarse-grained sandstone with
                    interbedded shale and overlying uncon-
                    solidated sand. Soils beneath the fire
                    training area are 95 percent sand with
                    5 percent by weight finer than sand.
                    Mineralogically, soils are at least 98 per-
                    cent alpha quartz with no clay as deter-
                    mined by X-ray diffraction.
                     Cost  estimates  for   the full-scale
                    system for the treatment of soil range
                    from $29 to $60 per ton of contaminated
                    soil.
    
                    APPLICATIONS:
                     Although the first field test proved pro-
                    mising, the process has not been tested
                    at the full-scale  level to assure even
                    distribution of heat over a wide area
                    (treating successive modules of 9200
                    square feet).
                     RF  heating  also has not been
                    demonstrated in clay type soils. Both of
                    these areas will be tested in a study in
                    FY 91.
                     The process  minimizes subsurface
                                                       IN PLACE VOLATIZATION
                                                     OF ORGANIC CONTAMINANTS
                                                        (100-400 DEGREES C)
    impact  reducing fugitive  vapors
    associated with excavation processes.
    
    BENEFITS:
      When developed and approved, this
    technology can provide a more cost-
    effective and efficient tool for removing
    hazardous chemicals from in situ soils
    and lead to better site remediation.
    
    AVAILABILITY:
      The first phase has proven successful
    for sandy soil in laboratory and scaled
    down field testing. Plans are underway
    to  conduct full-scale testing  at  Kelly
    AFB. When testing is completed and ap-
    proved, this method will be available.
    
    DOCUMENTATION:
      This technology is  documented in
    ESL TR 88-62, In Situ Soil Decontamina-
    tion by Radio-Frequency Heating-Field
    Test, published September, 1989.
    TECHNICAL CONTACT:
      Capt.   Ed    Marchand,
    AFESC/RDVW, Tyndall AFB
    32403-6001, DSN 523-6023
    HQ
    FL,
                              E&S TechData sheets are products of HQ AFESC/RDXI, Tyndall AFB FL, 32403-6001.
    
                                                    8-32
    

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    8.21
    EXHIBIT 10 - PROJECT SUMMARY: SOIL VAPOR EXTRACTION
    TECHNOLOGY REFERENCE HANDBOOK
                 United States                         Risk Reduction Engineering
                                                    Engineering Laboratory
                              Environmental Protection
                              Agency
                                                    Cincinnati OH 45268
                              Research and Development
                                                    EPA/540/S2-91/003 June 1991
          4Jr EPA       Project Summary
                              Soil Vapor Extraction  Technology
                              Reference  Handbook
                              Tom A. Pedersen and James T. Curtis
                                 Soil vapor extraction (SVE) systems
                              are being used in Increasing numbers
                              because of the many advantages these
                              systems hold over other soil treatment
                              technologies. SVE systems appear to
                              be simple In design and operation, yet
                              the fundamentals governing subsurface
                              vapor transport are quite complex.
                                 In view of this complexity, an expert
                              workshop was held to discuss the state
                              of the art of  the technology, the best
                              approach to optimize system applica-
                              tion, and the process efficiency and
                              limitations. As a result of the workshop,
                              an SVE Technology Assessment report
                              was produced. This report discusses
                              the basic science of the subsurface
                              environment and subsurface vapor flow,
                              site Investigations, SVE system design
                              and operation, and Includes selected
                              papers from the expert workshop. Addi-
                              tional research activities being con-
                              ducted Include a field demonstration of
                              a structured  SVE system design ap-
                              proach, a laboratory column study to
                              determine and characterize residuals
                              following vapor extraction, an assess-
                              ment of secondary emissions and regu-
                              lations governing releases from SVE
                              systems, cost of SVE Implementation
                              and operation, and a survey of tech-
                              niques to enhance vapor removal
                                 This Project Summary was devel-
                              oped by EPA'* Risk  Reduction Engi-
                              neering Laboratory, Cincinnati, OH, to
                              announce key findings of the research
                              project that la fully documented In a
                              separate report of the same title (see
                              Project Report ordering Information at
                              back).
                                                    Introduction
    
                                                      SVE is being used with increasing fre-
                                                    quency throughout the country for the
                                                    remediation of unsaturated zone soils that
                                                    have become contaminated with volatile
                                                    organics.  SVE.  also known as  vacuum
                                                    extraction, in situ vaporization, or soil
                                                    venting, has  many positive features that
                                                    gives it an advantage over other soil treat-
                                                    ment techniques such as excavation and
                                                    offsite treatment,  soil flushing,  or
                                                    biotreatment.  Some of the features that
                                                    make this technology applicable to a broad
                                                    spectrum  of sites are:
                                                        SVE is an in s/Tutechnology, so there
                                                        is a minimum of  site disturbance;
                                                        often, business operations at the site
                                                        need not be interrupted;
                                                     •   SVE can treat large volumes of soil
                                                        at reasonable costs;
                                                        SVE is easily  installed and uses
                                                        standard,  readily-available  equip-
                                                        ment, which allows for rapid mobili-
                                                        zation and implementation of remedial
                                                        activities;
                                                        SVE is effective in reducing the con-
                                                        centration of volatile organic com-
                                                        pounds  (VOCs) in the vadose zone,
                                                        reducing the potential for further mi-
                                                        gration;  and
                                                        SVE complements groundwater
                                                        pump and treat techniques, which
                                                        may be  instituted concurrently.
                                                      These features, combined with the ap-
                                                    parent simplicity of SVE system design,
                                                    implementation, and operation, have com-
                                                    bined to  make  SVE one of the  fastest
                                                    growing remediation choices. This growth
                                                    has not necessarily been accompanied by
                                                                              Printed on Recycled Paper
                                                             8-33
    

    -------
    a broader expansion of the knowledge base
    to properly design  and operate an SVE
    system. Indeed, the ease with which SVE
    systems can be installed  and operated
    belies the very complex nature of subsur-
    face vapor behavior and transport.
       Much of the technical  information  re-
    garding the design, construction, and op-
    eration of an extraction system is held by
    the SVE technology developers and ven-
    dors. Engineering practices, which are of-
    ten considered proprietary by the develop-
    ers may be based in large part on each
    developer's experiences. This atmosphere
    does not encourage rigorous objective re-
    view of design or operating methods and
    makes it more difficult to analyze the results
    of SVE use. This lack of knowledge poses
    limitations to regulatory agency personnel
    and others attempting to interpret system
    operating results.
       The increased use  of  SVE  systems
    and the need for a greater  understanding
    of the principles that  underlie soil vapor
    behavior and other issues related to SVE
    led the  U.S.  Environmental Protection
    Agency's Office of Research and Devel-
    opment, through its Risk Reduction Engi-
    neering  Laboratory,  Releases Control
    Branch (RREL-RCB) to initiate SVE  re-
    search  efforts.  The initial  step in  these
    efforts was  the convening of an expert
    workshop in Edison, NJ, on June 28 and
    29, 1989. Workshop participants included
    SVE  technology vendors,  petroleum  in-
    dustry  representatives,  university re-
    searchers,  consulting engineers, regula-
    tory  agency representatives,  and others
    who were familiar with this technology.
    The  workshop had  dual objectives. One
    was to discuss the state of the art of SVE-
    related topics, such as: site characteriza-
    tion, pilot systems, full scale system design
    and  operation,  vapor treatment options,
    establishing  and attaining cleanup goals,
    and monitoring  SVE treatment progress.
    Some presenters discussed actual  case
    studies; and others discussed a structured
    framework for conducting site investigations
    and system design, the use of modeling to
    help design extraction systems, and other
    research on SVE currently in progress.
    The second objective of the workshop was
    to discuss additional research needs. Panel
    discussions were held with workshop at-
    tendees regarding areas for future research
    and topics needing immediate attention.
    The regulatory climate was also discussed,
    including suggested remediation standards
    and methods to determine cleanup attain-
    ment. As a result of this workshop, an SVE
    Technology Reference Handbook was de-
    veloped.
     Reference Handbook
       The main text of this document is an
     assessment of the state of the art of soil
     vapor extraction technology. It was written
     specifically for  state and local regulators,
     agency staff, environmental managers, re-
     medial  contractors  and consultants who
     desire a basic understanding of SVE prin-
     ciples, applicability, operation, and cost.
       A general overview of the theoretical
     considerations applicable to soil vapor ex-
     traction is provided in Section 2. This sec-
     tion  includes discussions of the effect on
     SVE of contaminant properties, including
     vapor  pressure,  solubility,  Henry's law
     constant, boiling point,  soil sorption coeffi-
     cient,  contaminant composition and
     weathering, and soil properties such as
     structure, moisture  content, texture,  air
     permeability, and temperature.  Section 2
     also discusses gaseous flow in the sub-
     surface environment, including the equa-
     tions that govern subsurface vapor flow.
     Finally,  several field methods of determin-
     ing the soil's air permeability are presented.
       Section 3 provides an overview of site
     investigation approaches that can be used
     to obtain data  necessary to determine if
     vapor extraction is a viable remedial option
     and, if so, obtain critical  design information.
     This section also includes references to
     field techniques and equipment used to
     evaluate the site-specific feasibility of va-
     por extraction.
       General design approaches, including
     the determination of the air permeability,
     well  selection, and  system configuration,
     are described in Section 4. In addition, this
     section  discusses the  components that
     comprise an SVE system. The purpose of
     this section is to provide the reader with a
     qualitative analysis of the design procedure
     and the individual components to aid in the
     preliminary design of such a system.
       Operation, maintenance,  and monitor-
     ing of SVE systems are discussed in Sec-
     tion  5. This section also includes discus-
     sions of enhanced  biotreatment  due to
     SVE; cleanup  attainment determination,
     including new methods for measuring re-
     siduals; and other issues related to system
    operation.
       Section 6 discusses emission control
     methods available to treat the  extracted
    vapors.  Discussions are included on acti-
     vated carbon  adsorption, thermal and
    catalytic incineration, internal combustion
    engines, packed bed thermal processors,
    biotreatment, and direct discharge to the
    atmosphere.
       The  costs related to SVE implemen-
    tation and operation  are  discussed in
    Section 7. This section discusses costs for
    a site investigation, component-by-compo-
     nent capital costs for SVE equipment, costs
     for prepackaged units, and operations and
     monitoring costs for these systems.
       Ten appendices contain selected pa-
     pers presented at the  Edison, NJ, work-
     shop. Papers reprinted here were selected
     as representative of the  wide range  of
     topics  discussed. Appendix A is a review
     of existing SVE operations by N.E. Hutzler,
     B.E. Murphy, and J.S. Gierke. This section
     reports on  various aspects of SVE opera-
     tions,  including number, type,  and layout
     of wells, type of blower or pump used,
     emission control units,  and additional op-
     erational information. The section provides
     the reader with  a sound historical  basis
     with which to view other sections.
       In Appendix B, J. Danko discusses the
     applicability and limitations of SVE opera-
     tion. This paper describes the advantages
     of SVE and discusses, from an engineering
     viewpoint, some practical observations and
     advice.
       Appendix C contains a report  by H.B.
     Kerfoot on the use of soil gas surveys  in
     the design of SVE systems. Soil gas sur-
     veys are frequently used during  the site
     investigation phase to help delineate the
     extent  of contamination and determine the
     types and relative concentrations  of com-
     pounds in the ground. With this information,
     a judgment can often be rendered regard-
     ing the applicability of SVE for that site.
       Appendix D,  by  R.E.  Hinchee, D.C.
     Downey, and R.N. Miller, discusses the
     enhancement of  biodegradation  that ac-
     companies the use of soil vapor extraction.
       P.O. Johnson, M.W.  Kembtowski, J.D.
     Colthart, D.L. Byers, and  C.C.  Stanley
     contribute  "A  Practical  Approach to the
     Design, Operation, and Monitoring of In Situ
     Soil Venting Systems" in Appendix E. This
     report  presents  a structured logical ap-
     proach that forms a "decision-tree* for de-
     ciding  if  SVE is  appropriate to be  used
     and, if  so, describes the steps to be taken
     during system  design,  operation, and
     monitoring.
       Appendix F contains a scientific ap-
     proach to SVE design in a paper by M.C.
     Marley, S.D. Richter. B.L. Cliff, and P.E.
     Nangeroni. This  paper describes, among
    other things, the  use of a computer model
    to calibrate data obtained during a field air
    permeability test.
       LR. Silka, H.D. Cirpili, and D.C. Jordan
     discuss in  Appendix  G modeling  of sub-
     surface vapor flow and the applications of
     modeling to SVE.
       . D.W.  DePaoli, S.E. Heroes, and M.G.
     Elliot describe in  Appendix H the perfor-
     mance of SVE at a jet fuel spill site  in Utah.
     This paper contains knowledge and expe-
     rience gained during  SVE operation,
                                                               8-34
    

    -------
    operational results, and a discussion of
    various aspects of SVE.
       Appendix I contains actual case history
    results for an industrial site that has con-
    tamination from several volatile organic
    and base neutral compounds in a report by
    R.D. Mutch. Jr., A.N. Clarke, D.J. Wilson.
    and  P.O.  Mutch.  This interim report fo-
    cuses on the measured zone of influence
    of the extraction well, the composition of
    the extracted gas  and its changes with
    time, the treatabilhy of the extracted vapor
    by granular activated carbon, temperature
    variations that occur in the system, and
    groundwater upwelling due to the induced
    vacuum.  The authors also describe the
    use of a mathematical model in their work.
       A report by G.E.  Hoag  in Appendix J
    comments on recent SVE research devel-
    opments and research needs. These dis-
    cussions follow a summary of SVE "re-
    search milestones.'
       Appendices K and L contain responses
    to a state-by-state survey conducted in
    August 1989 regarding the allowable soil
    residual and air discharge criteria
       This book is not intended for use as a
    design manual, but it documents all of the
    latest state of the art  of the soil  vapor
    extraction technology.
       The full report was submitted in fulfill-
    ment of Contract No.  68-03-3409 by COM
    Federal Programs Corporation under the
    sponsorship  of the  U.S. Environmental
    Protection Agency.
                                                              8-35
    

    -------
    8.22          KEY REFERENCE LIST - VACUUM EXTRACTION
    
    
    Danko, J., "Soil Vapor Extraction Applicability and Limitations," Proc. HazMat West 89,
           California, Long Beach, CA, pp. 537 - 544, Hazardous Materials Control Research
           Institute, Silver Spring, MD, 1989.
    
    DePaoli, D.W., Herbes, S.E., and Elliott, M.G., Performance of In-Situ Soil Venting System at Jet
           Fuel Spill Site. Presented at U.S. EPA Soil Vapor Extraction Workshop, Edison, NJ, June
           1989.
    
    Downey, D.C., and Elliott, M.G., Performance of Selected In-Situ Soil Decontamination
           Technologies: A Summary of Two AFESC Field Tests. Presented at the American
           Institute of Chemical Engineers, Philadelphia, PA, August 1989.
    
    Hutzler, N.J., et. al., State of Technology Review.  Soil Vapor Extraction Systems. EPA 600/52-
           89/024.  U.S. Environmental Protection Agency, Cincinnati, OH, January, 1990.
    
    Hutzler, N.J., et. al., "Review of Soil Vapor Extraction System Technology," Proc. HazMat West
           '89, California, Long Beach, CA, pp. 512 - 536, Hazardous Materials Control Research
           Institute, Silver Spring, MD, 1989.
    
    Malot, J., Vacuum  Extraction of VOC Contamination in Soils. Dorado, Puerto Rico: Terra Vac,
           Inc., 1985.
    
    Miller, Ross N., A  Field Scale Investigation of Enhanced Petroleum Hydrocarbon Biodegradation
           in the Vadose Zone at Tyndall AFB, Florida, 1990.
    
    U.S. Environmental Protection Agency, 1989. Applications Analysis Report - Terra Vac  In-Situ
           Vacuum Extraction System, Groveland, MA, EPA 540/A5-89/003, (also  in videocassette
           from EPA,  Edison, NJ.)
    
    U.S. Environmental Protection Agency, 1990. Handbook of In-situ Treatment of Hazardous
           Waste-Contaminated Soils. EPA/540/2-90/002, (Available  from Risk Reduction
           Engineering Laboratory, Cincinnati, OH.)
    
    U.S. Environmental Protection Agency, 1990. Inventory of Treatability Study Vendors, Volume
           1, EPA/540/2-90/003a.
    
    U.S. Environmental Protection Agency, 1990. Second Forum on Innovative Treatment
           Technologies, Domestic and International, Philadelphia, PA, May 15-17, 1990,
           EPA/540/2-90/006 (Abstracts) or EPA/540/2-90/010 (Technical Papers).
    
    U.S. Environmental Protection Agency, 1989. State of Technology Review; Soil  Vapor Extraction
           Systems, EPA/600/2-89/024.
    
    U.S. Environmental Protection Agency, 1991. Soil Vapor Extraction Technology, Reference
           Handbook.  EPA/5401/2-91/003 (Fact Sheet included).
                                              8-36
    

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                               TABLE OF CONTENTS
    
    Section                                                                 Page
    
    
    9.0  IN SITU VITRIFICATION	  9-1
    
          9.1   TECHNOLOGY DESCRIPTION	  9-1
    
          9.2   TECHNOLOGY STATUS	  9-2
    
          9.3   APPLICATION 	  9-2
    
          9.4   TECHNOLOGY STRENGTHS	  9-2
    
          9.5   TECHNOLOGY LIMITATIONS	  9-3
    
          9.6   POTENTIAL MATERIALS HANDLING REQUIREMENTS	  9-3
    
          9.7   WASTE CHARACTERISTICS AFFECTING PERFORMANCE 	  9-3
    
          9.8   EXHIBIT 1 - WASTE CHARACTERISTIC TABLES	  9-5
    
          9.9   EXHIBIT 2 - DATA FROM SEMI-ANNUAL STATUS REPORT	  9-6
    
          9.10  EXHIBIT 3 - INNOVATIVE TREATMENT TECHNOLOGIES:  SEMI-
               ANNUAL STATUS REPORT - JULY, 1991	  9-7
    
          9.11  EXHIBIT 4 - INNOVATIVE TECHNOLOGY:  IN SITU
               VITRIFICATION	  9-8
    
          9.12  KEY REFERENCE LIST - IN SITU VITRIFICATION	 9-10
    
          9.13  BIBLIOGRAPHY	 9-11
    

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                                           9.0  IN SITU VITRIFICATION
    9.1
    TECHNOLOGY DESCRIPTION
           In situ vitrification (ISV) uses electrical power to heat and melt contaminated soils and
    sludges to form a stable glass and crystalline structure with very low leaching characteristics. ISV
    uses a square array of four electrodes inserted into the ground to establish a current in the soil,
    and heat the soil to a range of 2900* to 3600'F (1600 to 2000'C), well above a typical soil's
    melting point. As the melt is generated downward from the surface, organic contaminants are
    destroyed by pyrolysis and the pyrolized products migrate to the surfaces of the vitrified zone,
    where they combust in the presence of oxygen.  Non-volatile  inorganic contaminants are
    dissolved and incorporated into the melt.  The resulting product is devoid of residual organics.  A
    vacuum hood placed over  the area collects off gases, which are treated before being released into
    the atmosphere.
         Soils containing organics
         and inorganics
         Extreme heat
         <~1600-2000°C)
                               In Situ
                           Vitrification
    Vitrified soil
    Treated offgases
    Spent activated carbon
    Scrubber water from ARC
                                               9-1
    

    -------
    9.2           TECHNOLOGY STATUS
                         To date, engineering, pilot-scale, and full-scale tests have been conducted
                         on in situ vitrification of hazardous wastes.
    
                         This technology will treat 3,000 yd3 of soils contaminated with pesticides
                         as part of the Superfund removal action at the Parsons Chemical site,
                         Grand Lodges, MI.  In situ vitrification  was selected after a successful
                         treatability test.  (The OSC for the project is Leonard Zintak, Jr., US EPA,
                         Region V).
    
                         A large-scale test has been conducted at Hanford, Washington, on mixed
                         radioactive and chemical wastes containing chromium.
    
                         Nine full scale tests have been performed at DOE sites.
    
                         Only one vendor is licensed by the U.S.  Department of Energy to perform
                         ISV.
    
                         ISV has been selected for evaluation under the SITE program.
    
                         Three EPA regions have selected ISV to treat contaminated soils at
                         Superfund sites contaminated with PCBs, heavy metals, organics,
                         pesticides, and low-level dioxins. Exhibit 3 describes these sites.
    9.3           APPLICATION
                         In situ vitrification may be used to destroy, remove, or immobilize all
                         contaminant groups - radioactive, organic, and inorganic.  This technology
                         is also aDDrooriate for mixtures of wastes.
    vumaumuuu Bmups - rauiuauuvc, urgaim
    is also appropriate for mixtures of wastes
                         The technology may be applied to most soil types.  The two limiting
                         factors are: (1) moisture content (excessive moisture must be driven off
                         before vitrification, increasing costs significantly) and (2) presence of
                         glass-forming materials (i.e., silicon and aluminum oxides). If the soil is
                         too wet, it may be dewatered, and if there is insufficient glass-forming
                         material, a fluxing material may be added.
    9.4           TECHNOLOGY STRENGTHS
                         Successfully tested for the treatment of radioactive and hazardous wastes.
    
                         Produces a stable crystalline structure with long-term durability,
                         encapsulating the residual inorganic waste.
                                                9-2
    

    -------
    9.5           TECHNOLOGY LIMITATIONS
                         Requires off-gas collection and treatment and disposal of spent activated
                         carbon, scrubber water, and other waste materials from the air pollution
                         control equipment that may be hazardous.
    
                         May require backfilling with clean soil since volume can decrease 20 to 40
                         percent.
    
                         Because contaminants may migrate from the wastes at the periphery of the
                         melt (side migration), a vitrification project may need to include clean
                         material at the edges of the contaminated area to capture migrating
                         contaminants. This will increase the cost of the project by increasing the
                         quantity of material to be vitrified.
    
                         Existing metallic pipes and scrap metals may cause substantial problems in
                         full scale implementation.
    
                         To effectively immobilize metals and radionuclides, adequate
                         concentrations of glass-forming elements are required to ensure chemical
                         durability of the product.
    
                         ISV is not effective below the water table if the hydraulic conductivity is
                         greater than 10"4.
    
                         The concentration of organic material in the waste must be less than 10%
                         by weight to be accommodated with the existing off gas equipment.
    9.6           POTENTIAL MATERIALS HANDLING REQUIREMENTS
                         This technology is used in situ; no excavation is required.  Some excavation
                         and placement of wastes may be done to stage the waste and lower the cost
                         of the project.
    
                         The contaminated material may be dewatered if the ground water
                         conditions at the site are such  that dewatering is cost effective.  Because
                         this technology is more efficient with unsaturated soils, costs can be
                         lowered by dewatering saturated or very wet areas before treatment.
                         Because this is an in situ technology, the material  must be  dewatered with
                         in situ methods such as well points and drains.
    9.7           WASTE CHARACTERISTICS AFFECTING PERFORMANCE
                  •      Soil moisture, which must be driven off before melting occurs, can have a
                         major effect on cost.
    
                  •      A second major factor affecting cost-effectiveness is the cost of
                         electricity.
    
                  •      The capability of the  system depends on two factors: (1) the capabilities of
                         the power supply and (2) the capacity of the off-gas system.
    
    
                                               9-3
    

    -------
    The two factors that affect the ability of the power supply system are the
    presence of saline ground water and buried metals.  Vitrification can take
    place in saturated soils with low permeabilities if the melting rate is
    greater than the rate of recharge.
    
    Miscellaneous buried metal, such as drums, should have little or no effect
    on the ability to process a site. A conduction path that could lead to
    shorting between electrodes should be avoided.
    
    The bulk chemistry of the waste material effects the melt temperature,
    viscosity of the melt, and durability of vitrified mass.
    
    The off-gas system should maintain a negative pressure to prevent any
    release of contamination.  The concern is with the release of gas from
    relatively short transient events such as the release of entrapped air from
    intrusions into void spaces, penetration of a drum containing combustible
    material, and  intrusion into areas containing solid or liquid combustible
    materials.
    
    Treatability tests should focus on performance requirements for the  off-
    gas treatment system and the type and quantity of secondary waste
    generated.  Almost all soils can be vitrified and this is generally not a
    serious consideration during treatability testing.
                            9-4
    

    -------
    9.8
    EXHIBIT 1 - WASTE CHARACTERISTIC TABLE
    Waste Type:  Soils and Sludges
    Technology:  In Situ Vitrification
        Characteristics
      Impacting Process
          Feasibility
                      Reason for Potential Impact
            Data
         Collection
        Requirements
    Presence of ground
    water and soil
    permeability less than
    1 x 10's cm/sec
    
    Buried metals (drums)
    occupying over 90%
    of linear distrance
    between electrodes
    
    Loosely packed
    rubbish, buried coal
    
    Combustible liquids'
    (9600 Ib/yd of depth
    or 7 wt %)
    
    Combustible solids'
    (6400 Ib/yd of depth
    or 4.7 wt %, including
    30% soil with  the
    solids)
    
    Combustible packages'
    (1.2 yd3 or 32ft3)
    Volatile metal content
    and depth
    Combustible liquids
    
    Void volumes
                Severely limits economic practicality
                because much energy will be expended in
                driving off water.
                Buried metals can result in a conductive
                path that would lead to electrical shorting
                between electrodes.
                May start underground fire.
                Time-ordered limits to the capacity of the
                off-gas system to contain combustion gas.
                Not cumulative capacity.
    
                Time-ordered limits to the capacity of the
                off-gas system to contain combustion gas.
                Not cumulative capacity.
                Time-ordered limits to the capacity of the
                off-gas system to contain combustion gas.
                Not cumulative capacity.
    
                Retention of volatile metals in melt is
                reduced as surface is approached.  Clean
                soil may be placed on  top to increase
                depth to which off-gas treatment may be
                relied on.
    
                9600 Ib/yd of depth or 7% by weight.
    
                5-6 yd3 or 152 ft3.
    Percolation test/water
    table mapping
    Site mapping
    Site mapping
    Site mapping, analysis
    for priority pollutants,
    feasibility testing
    
    Site mapping, analysis
    for priority pollutants,
    feasibility testing
    Site mapping, analysis
    for priority pollutants,
    feasibility testing
    
    Site mapping, analysis
    for Cd, Pb, Hg, As
    ' Concentration limits are generic in nature; individual applications need to be reviewed in detail.
    
    Source: Technology Screening Guide for Treatment of Soils and Sludges EPA/540/2-88/004
            (1988)
    
                                               9-5
    

    -------
    9.9
    EXHIBIT 2 - DATA FROM SEMI-ANNUAL STATUS REPORT
     Selection Frequency
    
                 5
       NUMBER
       Of TIMES
      SELECTED
                                 In Situ Vitrification
                                                   90
                                    FISCAL YEAR
           * Data derived from 1982 -1990 Records of Decision ( RODs ) and anticipated design and
            construction activities.
                                                                September 1991
          Contaminants Treated By In Situ Vitrification
               6
    
               5
    
               4
      Number
        of     3
     Superfund
       Sites    2
               1
    
               0
                  Metals  Pesticides   PCBs     VOCs    Dloxln   MBOCAs
      * Data derived from 1982 - 1990 Records of Decision (RODs) and anticipated design and construction
       activities. At some sites, the treatment is for more than one major contaminant.
                                        9-6
    

    -------
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          9.11
    EXHIBIT 4 - INNOVATIVE TECHNOLOGY:  IN SITU VITRIFICATION
                                  United States
                                  Environmental Protection
                                  Agency
                                           Solid Waste And
                                           Emergency Response
                                           (OS-220)
                 Directive 9200 5-25IPS
                 November 1989
                                                      ive  Technology
                                  In-Srtu  Vitrification
    TECHNOLOGY DESCRIPTION
    
        In-situ vitrification (ISV) can be used
    to treat soils and sludges contaminated with
    mixtures of various waste types (e.g.. radio-
    active, inorganic, and/or organic). The pro-
    cess electrically melts the waste media, cre-
    ating an extremely stable glass-like solid.
        A schematic diagram of a typical ISV
    treatment facility is shown in Figure 1.  Four
    electrodes connected to a utility distribution
    system or to an on-site diesel generator are
                      over the process area collects both organic
                      and inorganic gases, which are treated be-
                      fore being released into the atmosphere. An
                      off-gas treatment system is designed to
                      handle conditions at most sites. If necessary,
                      the treatment system may be modified to
                      meet specific site requirements. The off-gas
                      treatment may include any of the following
                      units:  a wet scrubber system, a heat ex-
                      changer with a glycol  cooling system, a
                      heater, a filter, and/or an activated charcoal
                      assembly. The hood draws in large amounts
              Figure 1:  Schematic Diagram of a Typical In-SHu Vitrification
                                 Treatment Facility
             from B«a*M P«cf c Nennoii LjBoraorwi. lor Boot. AMn t H*mion ine
    inserted into the soil. Because soil typically
    has low electrical conductivity, flaked graph-
    ite and glass frit are deposited between elec-
    trodes to provide a starter path for the elec-
    trical current. As the current flows between
    electrodes, the adjacent soil is heated to
    1600 -  2000°C, well above a typical soil's
    melting temperature. The graphite starter
    path eventually bums off and the current is
    transferred to the now highly conductive
    melted soil.
        Within the melt, organic contaminants
    are vaporized and pyrolyzed (i.e., thermally
    decomposed); the pyrolysis products rise to
    the surface and combust in the presence of
    oxygen. Non-volatile inorganic elements
    are dissolved or incorporated into the melt
    Volatile metals may vaporize and rise to the
    surface along with the pyrolysis products.
    Table 1 lists the effectiveness of ISV on
    general contaminant groups.
        A negatively pressurized hood placed
                      of outside air which helps to oxidize  com-
                      bustible vapors and pyrolysis products. All
                      equipment involved with the ISV process,
                      including the off-gas treatment system, are
                      contained in three mobile trailers.
                          When the treatment is completed, the
                      power is shut off and the equipment (i.e.,
                      electrodes and hood) is moved to another
                      treatment area where the treatment process
                      is repeated.  Following treatment, the sur-
                      face of the vitrified  area  is covered with
                      clean soil, and the melt is  allowed to cool
                      slowly, producing an amorphous solid re-
                      sembling obsidian.  Several  months are
                      required for the treated area to cool to ambi-
                      ent temperature; however, after four to five
                      days, the melt has cooled sufficiently for
                      equipment to be moved onto the treated area.
                          The advantages of ISV include the
                      potential ability to  destroy,  remove, or
                      immobilize all contaminant groups and to
                      reduce the volume of the waste/media being
    treated. The need for off-gas collection and
    treatment, however, is a disadvantage.
    
    SITE  CHARACTERISTICS AFFECTING
    TREATMENT FEASIBILITY
    
        Generally, the acceptable levels for
    treatment of contaminants in soil are 5 to 10
    weight percent organics and 5  to IS weight
    percent inorganics.  Due to the need to con-
    sider several other factors (e.g., soil type) in
    determining feasibility, treatability tests are
    required.
        The  ISV process can be  used to treat
    saturated  soils; however, the water must be
    evaporated first, requiring additional energy
    and further expense. If the soil permeability
    is high and the soils are recharged by an
    aquifer, a ground water diversion system
    may need to be installed, adding additional
    expense.
                   Table 1
      Effectiveness of In-SItu Vitrification
      Treatment on General Contaminant
          Groups for Soil and Sludge
    Tmttbillty Group*
    
    i
    ':
    £
    HaJogonatad voiatfl**
    Halog«nat*d s«m!-voi>aiM
    Non-halogcnarao: voMttta
    Non-nalog«nau
    -------
         The presence of significant amounts of buried metals (e.g..
     drums) may cause shorting between electrodes, therefore, the metal
     concentration limit is 5 to 16 percent of the melt weight. Addition-
     ally, metals cannot occupy more than 90 percent of the continuous
     linear distance between electrodes. Table 2 lists those factors that
     affect ISV feasibility.
    
     TECHNOLOGY CONSIDERATIONS
    
         Currently, ISV technology can be used to treat a maximum area
     of 30 ft x 30 ft.; the maximum depth of treatment is 30 ft  Note that-
     the maximum mass of contaminated material that can be treated per
     setting is 800 to 1,000 tons. When processing a 30 ft x 30 ft. area,
     the mass limit will be reached before the depth reaches 30 ft.; con-
     sequently, it is impossible to reach all three maximums simultane-
     ously.  Conversely, the minimum area that can be treated is 10 ft. x
     10 ft; the recommended minimum depth of treatment is 5 to 7 ft
         Most soil types contain sufficient glass-forming  materials
     (e.g., silicon and aluminum oxides) for treatment to be effective;
     however, it may be necessary to add a fluxing material (e.g., sodium
     carbonate) to supply adequate amounts of monovaleni cations to
     provide sufficient electric conductivity. During ISV, the soil vol-
     ume decreases 20 to 40 percent necessitating the backfilling of the
     subsided area with clean soil.
         During full-scale operation, ISV processes 4 to 6 tons of soil
     per hour, requiring 0.3 to 0.5 kwh per pound of soil. The power level
     required is 1.9 Mw/jhase.
         The ba& price of a typical treatability study, conducted in
     Geosafe Corporation's laboratory, is estimated to be $25,000. Ana-
     lytical costs, however,  can raise the total cost to between $35,000
     and $100,000.
    
     TECHNOLOGY STATUS
    
         Battelle Memorial Institute is exclusively licensed by the U.S.
     Department of Energy (DOE) to perform ISV. Geosafe Corpora-
     tion, primarily owned by Battelle, holds the exclusive sublicense to
    perform ISV commercially.  More information concerning Geosafe
     is found in Table 3. Battelle and Geosafe have cumulatively per-
    formed more than 70 tests of various scales  for DOE and other
    clients. At the DOE Hanford S he in Washington State. ISV success-
     fully treated soils contaminated with radioactive wastes.
        The ISV process has been selected for evaluation under the
    SITE Program. Formal demonstration and testing of the process has
    been postponed until  the developer has obtained funding for a dem-
    onstration at an appropriate site.
        Currently, EPA's Emergency Response Division in Region 5
                             Tab* 3
                       Vendor Information
        Slte-epeclflc Characteristics and Impacts on In-SHu
                      Vitrification Trsatmsnt
    Company
    Gaosafe Corporation
    Contact
    James Hansen
    Dal* Timmons
    Address
    303 Partcplace Suite 126
    Kirkland, WA 98033
    (206)822-4000
    Note: Geosafe Corporation is the exclusive commercial sublicensee of
    the ISV process.
    Cnsractsristics
    Impacting Process
    Feasibility
    Pretence ol ground water
    thin 1 1 lOAiWsec
    Buned matala (e.o.. drums),
    grMttr than 5 to 1 5 percent
    Of 1n0 fROsj WVlQnl DttVRMO
    eleclredea
    LOOM* pecked mbtMh
    and/or buned coal
    than 9,600 b/yd at depth or
    5to 10 percent* weight
    Combustible soldi (e.g..
    wood). greater than
    6.400 tbrydol depth or
    4.7 percent by weight
    Combtatiblt packages
    (e.g., boxes of clothing
    packaged lor disposal),
    greater then 32 ft J
    Volatile metal content and
    depth
    Vad volume* greater thin
    1S2«3
    Rsssons foe
    Potwitjsl
    unpAct
    WM0f aalftxjts thst •ffotnty of
    tht vrtriicttion OTDOMS. limits
    •oonomc pfvcDckity
    Sat m r»eaturaud faster than
    water can M evaporated
    Buned mauls can result in a
    conducive path ttial would
    lead to shorting batwaan
    electrodes
    May start underground lira
    Tme-oxlered Inwi to tha
    capapty o( tha off-gas system
    to cortam combustion gaa,
    (not cuinuMiv* capacity)
    Tima-oiaeradSmMtothe
    eipaeily of tha ofl-oat *y«tam
    to contain combuation gaa,
    (not cumuMM capacity)
    Tma-oidarad bnita to tha
    capacity ot tha otl-gaa tytMtn
    to contaNi combuatnn gaa,
    (not cumuMwa capaoly)
    Retention ol volatie metata n
    me«» ten near surface than
    further below
    Time-o«Jer«Jlmitstothe
    capacity ol tha oN-gaa system
    to contajn combustion gas,
    (not cumulative capacity)
    Actions to
    Mlnlmla
    Impacts
    Oewater belore (reamer*
    or pump to lower waer
    tatte
    Inatal ground water
    dnenan system
    Use leedmg elect rodes
    Instalbamerwalsar
    sheet pilng
    Increase hood capacty,
    process at a slower ««,
    or employ smaller process
    selling volumes
    Increase hood capacity,
    process a a slower ran.
    or employ smaller process
    setting volumes
    Increase hood capacity,
    process • a slower rate.
    setting volumes
    Before treatment, place
    dean sod on top to
    incrseM mod depth
    Increase hood capacity,
    process m a slower rate.
    or employ smaller process
    uninQ voJufrite)
    has selected ISV to treat pesticides, heavy metals, and low-level
    dioxins. IS V has also been selected to treat contaminated soils at the
    Ionia Landfill in Region 5 and the Northwest Transformers site in
    Region 10.  The status of ISV application at CERCLA sites is sum-
    marized in Table 4.
    
    OFFICE OF RESEARCH AND DEVELOPMENT CONTACTS
    
        Further information regarding the ISV process may be obtained
    from Steve James, U.S. EPA, Risk Reduction Engineering Labora-
    tory. Cincinnati, Ohio 45268, (513) 569-7877 or FTS (684-7877).
                              Tab* 4
             In-SHu Vitrification Status at CERCLA Sites
    SELECTED:
    Region 5 -tenia Landfill, Ml 9/89
    Rsgion 5 • Pvsons/ETM, Ml
    (Removaj Acton) FY90
    Region 10 • Nortiwwt Tmnstorrnsn,
    WA9»
    Heavy nwBls, orgBncs in
    Soil
    Pesfcidw. heavy meals.
    low-level rjooons in Soil
    PCS* * Soil
    5000 cubic
    yards
    Not Provided
    Not Provided
                                                                9-9
    

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    9.12          KEY REFERENCE LIST - IN SITU VITRIFICATION
    
    
    Carter, J.G., and others, Process Performance of the Pilot-Scale In Situ Vitrification of a
           Simulated Waste Disposal Site at the Oak Ridge National Laboratory, PNL, 6530,
           Pacific Northwest Laboratory, Richland, WA, 1988.
    
    Fitzpatrick, V.F., Timmerman, C.L., and Buelt, L., 1986: In Situ Vitrification - A
           Candidate Process for In Situ Destruction of Hazardous Waste.  Presented at the
           Seventh Superfund Conference, Washington DC,  December 1-3, 1986.  Richland,
           WA:  Pacific Northwest Laboratory.
    
    Geosafe Corporation, Draft Test Specific Engineering-Scale Test of In Situ Vitrification
           for Shattuck Chemical Site, 883-1551.006, April, 1990.
    
    Geosafe Corporation, Draft Treatability Test Report for Application of In Situ
           Vitrification to Contaminated Soil at the Denver  Radium Site, Operable Unit VIII,
           GSC 1006, August, 1990.
    
    Spalding, B.P. and Jacobs, O.K., Evaluation of an In Situ Vitrification Field
           Demonstration of a Simulated Radioactive Liquid Waste Trench, ORNL/TM-
           10992, Oak Ridge National Laboratory, Oak Ridge, TN, October, 1989.
    
    U.S. Environmental Protection Agency, 1989. Innovative Technology: In-Situ Vitrification,
           OSWER Directive 9200.5-251-FS (Fact Sheet Attached).
    
    U.S. Environmental Protection Agency, 1990. Inventory of Treatability Study Vendors,
           Volume I, EPA/540/2-90/003a.
    
    U.S. Environmental Protection Agency, 1990. Second  Forum on Innovative Treatment
           Technologies, Domestic and International, Philadelphia, PA, May 15-17, 1990,
           EPA 540/2-90/006 (Abstracts) or EPA/540/2-90/010 (Technical Papers).
    
    Versar, Inc., Draft  Work Plan for Bench-Scale Vitrification Treatability Studies at Denver
           Radium Site - Operable Unit VIII, Contract #C377624, January, 1990.
    Note: A more comprehensive bibliography is being developed.
                                              9-10
    

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    9.13         BIBLIOGRAPHY
    
    
                            In Situ Vitrification Bibliography
    
    
            Reprints of documents having  a  PNL number can be  order  from:
    
                The National Technical Information Service
                U.S. Department of Commerce
                5285 Port Royal Road
                Springfield, Virginia  22161
                (800) 336-4700
    
            Reprint requests for all other documents should be directed to the specific
      publishing company, university, institute, or journal  listed.
    
    
      Brouns, R. A., J. L. Buelt and J. M. Perez Jr.  1986.  "Volume Reduction/
        Immobilization of Low-Level Radioactive and Mixed Waste by Vitrification."
        PNL-SA-13831, Pacific Northwest Laboratory, Richland, Washington.
    
      Brouns, R. A., and C. L. Timmerman.  1982. "In Situ Thermoelectric Stabilization
        of  Radioactive Wastes."  PNL-SA-9924.  In Proceedings of the Symposium on
        Waste Management 1982 Meeting. March 8-11, 1982, Tucson, Arizona.
    
      Brouns, R. A., and C. L. Timmerman.  1982.  "In Situ Vitrification of
        Contaminated Soil - Pilot-Scale Field Testing."  PNL-SA-10203.  Presented
        at  the American Nuclear Society Meeting, June 13-16,  1982, Los Angeles,
        California.
    
      Buelt, J. L.  1986.  "In Situ Vitrification of Contaminated Soils."  PNL-SA-
        13985, Pacific Northwest Laboratory, Richland,  Washington.
    
      Buelt, J. L.  1986.  "Volume Reduction of Industrial  Sludge by In Situ
        Vitrification."  PNL-SA-13831A,  Pacific Northwest Laboratory, Richland,
        Washington.
    
      Buelt, J. L.  1985.  A Mobile Encapsulation and Volume Reduction System for
        Wet Low-Level Wastes"!PNL-5533,  Pacific Northwest Laboratory, Richland,
        Washington.
    
      Buelt, J. L.  1983.  "A Melter for Radioactive Resins."  The Glass Industry.
        Ashlee Publishing Co.,  Inc.,  New York.
    
      Buelt, J. L.  1983.  Liner Evaluation for Uranium Mill  Tailings:  Final Report.
        DOE/UMT-2016,  PNL-4842,  Pacific Northwest Laboratory, Richland, Washington.
    
      Buelt, J. L.  1982.  A Vitrification Process for the Volume Reduction and
        Stabilization of Organic ResfnTiGENO-023,  EG&G Idaho,  Inc., Idaho Falls,
        Idaho.
    
      Buelt, J. L.   1982.   The Feasibility of Vitrifying EPRICOR II Organic Resins.
        GEND-012,  EG&G  Idaho,  Inc.,  Idaho Falls,  Idaho.
                                        9-11
    

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    Buelt  J. L.f and J. G. Carter.  1986.  Description and Capabilities of the
      Large-Scale In Situ Vitrification Process.PNL-5738, Pacific Northwest
      Laboratory, Rich land, Washington.
    
    Buelt, J. L., and J. G. Carter.  1986.  In Situ Vitrification Large-Scale
      Operational Acceptance Test Analysis.  PNL-5828, Pacific Northwest
      Laboratory, Rich!and, Washington.
    
    Buelt, J. L., and J. G. Carter.  1985.  "Description and Capabilities of a
      Process for Stabilizing Buried Hazardous Materials."  PNL-SA-13206, Pacific
      Northwest Laboratory, Richland, Washington.
    
    Buelt, J. L., and S. M. Barnes.  1983.  Aging Test Results of An Asphalt
      Membrane Liner.  PNL-4752,  Pacific Northwest Laboratory, Richland, Washington.
    
    Buelt, J. L., and S. M. Barnes.  1981.  "A Comparative Evaluation of Liner
      Materials for an Inactive Mill Tailings Pile."   Uranium Mill Tailings
      Management. Colorado State University,  Fort Collins, Colorado.
    
    Buelt, J. L., and K. H. Oma.   1981.  "Incineration/Vitrification of Simulated
      Low-Level Institutional  Wastes In a Joule-Heated Glass Melter."  Nuclear
      and Chemical  Waste Management.  Vol. 2.,  Pergamon Press, Inc., Elmsford,
      New York.
    
    Buelt, J. L., and C. C. Chapman.  1979.  "Slurry  Feeding of Nuclear Waste to
      an Electric Glass Melter."   PNL-SA-7571,  Pacific Northwest Laboratory,
      Richland, Washington.
    
    Buelt, J. L., C. L. Timmerman,  K. H. Oma,  V. F. FitzPatrick and J. G. Carter.
      1987.  In Situ Vitrification  of Transuranic Wastes;   An Updated Systems
      Evaluation and Applications Assessment"PNL-4800,  Supplement 1, Pacific
      Northwest Laboratory, Richland, Washington.
    
    Buelt, J. L., V. F. FitzPatrick and C. L.  Timmerman.   1985.  "Electrical
      Technique for In-Place Stabilization of Contaminated Soils."  Chem. Eng.
      Progress, 3:43-48.
    
    Buelt, J. L., V. F. FitzPatrick and C. L.  Timmerman.   1984.  "An Innovative
      Electrical Technique for In-Place Stabilization of Contaminated Soils."
      PNL-SA-12174.  Presented at the American Institute of Chemical Engineers
      National Meeting, Philadelphia, Pennsylvania.
    
    Carter, J. G.,  and J. L. Buelt.  1986.  "In Situ  Vitrification:  A Large-Scale
      Prototype for Immobilizing Radioactively Contaminated Waste."  PNL-SA-13356.
      Presented at the Waste Management '86 Symposium, March 1986, Tucson,  Arizona.
    
    FitzPatrick, V. F.  1986.   "In  Situ Treatment of  Contaminated Soils."  PNL-
      SA-131126, Pacific Northwest Laboratory,  Richland,  Washington.
    
    FitzPatrick, V. F.  1986.   "In Situ Vitrification - Status of the Technology."
      PNL-SA-13822, Pacific Northwest Laboratory, Richland, Washington.
    
    FitzPatrick, V. F.  1986.   "Waste Immobilization  Technologies."  PNL-SA-
      14143,  Pacific Northwest Laboratory, Richland,  Washington.
    
    
                                       9-12
    

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    FitzPatrick, V. F.  1984.  "In Situ Vitrification Applied to  Transuranic
      Wastes."  In Proceedings of Waste Management. March 1984, Tucson,  Arizona.
    
    FitzPatrick, V. F.  1983.  "In Situ Vitrification Applied to  Transuranic
      Wastes."  In Proceedings of the Fifth Annual DOE Low-Level  Waste Management
      Program, CNF-8308106, December 1983.
    
    FitzPatrick, V. F.  1983.  "In Situ Vitrification of Transuranic Wastes:
      Systems Evaluation and Application Assessment."  PNL-SA-11541, Richland,
      Washington.
    
    FitzPatrick, V. F., J. L. Buelt, K. H. Oma and C. L. Timmerman.  1984.   "In
      Situ Vitrification - A Potential Remedial Action Technique  for Hazardous
      Waste."  PNL-SA-12316.  Presented at the Hazardous Material Conference,
      June 5, 1984, Philadelphia, Pennsylvania.
    
    Freeman, H. D., J. N.  Hartley and J. L. Buelt.  1984.  "Engineered Sorbent
      Barriers for Low-Level Waste."  Presented at the Sixth Annual Department of
      Energy Low-Level Waste Management Program Participant's Meeting, Denver,
      Colorado.
    
    Oma, K. H., and C. L.  Timmerman.  1984.  "Off-Gas Treatment and Characterization
      for a Radioactive In Situ Vitrification Test."   PNL-SA-12000.  Presented at
      the Eighteenth DOE Nuclear Airborne Waste Management and Air Cleaning
      Conference,  August 14, 1984, Baltimore, Maryland.
    
    Oma, K. H., R. K.  Farnsworth and C. L. Timmerman.  1984.  "Characterization
      and Treatment of Gaseous Effluents from  In Situ Vitrification."  Radioactive
      Waste Management and the Nuclear Fuel  Cycle  4(4):319-341, Harwood Academic
      Publishers, New York.
    
    Oma, K. H., D. R. Brown, J. L. Buelt, V. F. FitzPatrick, K. A. Hawley, G. B.
      Mellinger, B. A. Napier, D. J. Silviera,  S. L. Stein and C. L. Timmerman.
      1983.  In Situ Vitrification of Transuranic Wastes;  Systems Evaluation and
      Applications Assessment.PNL-4800, Pacific Northwest Laboratory, Richland,
      Washington.
    
    Oma, K. H., R. K. Farnsworth and J. M. Rusin.  1982.  In Situ Vitrification;
      Application Analysis for Stabilization of Transuranic Waste.PNL-4442,
      Pacific Northwest Laboratory,  Richland,  Washington.
    
    Timmerman,  C. L.  1985. "In Situ Vitrification of PCB-Contaminated Soils."  In
      Proceedings;  1985 EPRI PCB Seminar. CS/EA/EL-4480, Electric Power Research
      Institute, Palo Alto, California.
    
    Timmerman,  C. L.  1984.  "Stabilization  of Contaminated Soils by In Situ
      Vitrification."  In Proceedings of the Thirteenth Environmental Systems
      Symposium, pp. 151-163, American Defense Preparedness Association, Bethesda,
      Maryland.
                                      9-13
    

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    Timmerman, C. L.  1982.  "Economics of Transuranic Waste  Immobilization  and
      Disposal."  PNL-SA-10244.  Presented at the American Nuclear Society Topical
      Meeting on the Treatment and Handling of Radioactive Waste, April  19-22,  1986
      Richland, Washington.
    
    Timraerman, C. L., and K. H. Oma.  1985.  "A Pilot-Scale Radioactive  Test Using
      In Situ Vitrification."  Nucl. Tech.  71(2):471-481.
    
    Timmerman, C. L., and R. 0. Lokken.  1984.  "Characterization of Vitrified Soil
      Produced by In Situ Vitrification."  Nuclear Waste Management Advances  in
      Ceramics, eds. G. 6. Wicks and W. A. Ross,  8:619-626,  The American Ceramic
      Society, Columbus, Ohio.
    
    Timmerman, C. L., and K. H. Oma.  1984.  "An  In Situ Vitrification Pilot-Scale
      Radioactive Test."  PNL-5240,  Pacific Northwest  Laboratory, Richland,
      Washington.
    
    Timmerman, C. L., R. A. Brouns,  J.  L. Buelt and K.  H. Oma.  1984.  "In Situ
      Vitrification:  Pilot-Scale Development."  Nuclear and  Chemical Waste
      Management. Vol.  4,  No. 3,  Pergamon Press,  inc.,  Elmsford,  New York.
                                      9-14
    

    -------
                               TABLE OF CONTENTS
    
    Section
    
    
    10.0  GROUND WATER TREATMENT TECHNOLOGIES 	  10-1
    
          10.1   TECHNOLOGY DESCRIPTION	  10-1
    
          10.2   TECHNOLOGY STATUS	  10-2
    
          10.3   APPLICATIONS  	  10-2
    
          10.4   TECHNOLOGY STRENGTHS AND LIMITATIONS	  10-2
    
          10.5   HORIZONTAL WELLS FOR IN SITU REMEDIATION 	  10-3
    
          10.6   PERMEABLE STATIONARY TREATMENT ZONES	  10-4
    
          10.7   EXHIBIT 1 - TREATMENT TECHNOLOGIES FOR GROUND WATER  .  10-5
    
          10.8   EXHIBIT 2 - STATUS OF SELECTED TECHNOLOGIES	  10-6
    
          10.9   EXHIBIT 3 - SITE TECHNOLOGY PROFILE - E.I. DUPONT
               DeNEMOURS AND COMPANY/OBERLIN FILTER COMPANY	  10-7
    
          10.10  EXHIBIT 4 - SITE TECHNOLOGY PROFILE - TECHTRAN, INC	  10-9
    
          10.11  EXHIBIT 5 - SITE TECHNOLOGY PROFILE - EXXON CHEMICALS,
               INC. & ROLINDA CHEMICAL CO	  10-11
    
          10.12  EXHIBIT 6 - SITE TECHNOLOGY PROFILE - ULTROX
               INTERNATIONAL 	  10-13
    
          10.13  EXHIBIT 7 - SITE TECHNOLOGY PROFILE - ALLIED SIGNAL
               CORPORATION  	  10-15
    
          10.14  EXHIBIT 8 - SUBSURFACE CONTAMINATION REFERENCE GUIDE   10-17
    
          10.15  EXHIBIT 9 - A GUIDE TO PUMP AND TREAT GROUND-WATER
               REMEDIATION TECHNOLOGY	  10-34
    
          10.16  KEY REFERENCE LIST - GROUNDWATER	  10-40
    

    -------
                      10.0  GROUND WATER TREATMENT TECHNOLOGIES
    
    10.1          TECHNOLOGY DESCRIPTION
    
           The innovative technologies discussed in the previous sections of this document are
    primarily source control technologies. These technologies treat hazardous contaminants found in
    soils, sludges, or debris. Several additional technologies could be considered at sites where
    ground water is contaminated. At these sites the nature of the contaminate (concentration,
    partition, coefficient, solubility, viscosity, and biodegradability) and the hydrogeology (extent of
    contamination, hydraulic conductivity, storage coefficient, heterogeneity of the aquifer) will
    determine which treatment technology offers the best possibility of effectively and efficiently
    treating the ground water.  A thorough investigation of the subsurface conditions is necessary to
    design a ground water treatment system, develop appropriate operating and monitoring
    procedures and establish realistic termination criteria.
    
           Technologies to clean up ground water contaminated with hazardous  wastes may be
    considered in two categories; those that rely on pumping followed by treatment above the ground
    and those that treat the water in situ.  Exhibit  1 shows  the different technologies for ground
    water treatment. In many ways, the technologies that are applied above ground closely resemble
    the traditional water treatment technologies used to treat industrial and municipal waste waters;
    they include such things as carbon adsorption, air stripping, chemical precipitation, biological
    treatment, etc.
    
           The effectiveness of these ex situ technologies is based on the effectiveness of the
    pumping system in capturing the hazardous wastes and bringing them  to the surface with the
    ground water for treatment.  If pumping can not remove the contaminants from the particles
    within the aquifer, the ex situ treatment technologies do not have an opportunity to treat them.
    
           Innovative  technologies may be used to enhance extraction of the contaminants.  These
    technologies include such  techniques as steam extraction and surfactant flushing.
    
           Innovative  technologies may also be used to treat the ground water in situ.  As with the
    technologies to treat soil, these technologies act to either separate the contaminants from the
    ground water and surrounding aquifer, change the contaminants into a less toxic or less  mobile
    form or degrade them to eliminate their toxicity.
                                                10-1
    

    -------
    10.2          TECHNOLOGY STATUS
                  Exhibit 2 shows the status of technologies for ground water remediation.  Most of
                  the technologies shown in Exhibit 1 and 2 are described in the documents included
                  as Exhibit 3 through Exhibit 14. Two new technologies for the remediation of
                  ground water which are not discussed in those documents are described in Sections
                  10.7 and 10.8.
    
                  Pump and treat remedies are commonly selected in the Superfund program.  For
                  FY 89 alone, for example, 67 RODs involving pump and treat remedies were
                  signed.
    
                  In situ bioremediation to destroy contaminants in ground water has been selected
                  for five Superfund sites. The contaminants to be degraded include VOCs, SVOCs,
                  creosote, and PAHs.
    10.3          APPLICATIONS
    
    
           Pump and Treat
                  Technologies which rely on extracting the contaminants with the ground water and
                  separating them work best for mobile contaminants (K.^ <3.5), in homogeneous
                  aquifers with high permeability.  These conditions are most conducive to the
                  extraction of the contaminants with the ground water, making them available for
                  treatment.
    
                  Enhancements to traditional pump and treat technologies included pulsed
                  pumping, reinjection, chemical extraction and steam extraction.  These
                  enhancements promote more efficient removal/treatment of less mobile
                  contaminants in less homogeneous,  less permeable aquifers.
           In Situ Remediation
                  In situ remediation techniques (dewatering with vacuum extraction, steam
                  extraction, chemical oxidation and bioremediation) are applicable to organic
                  contaminants that are  volatile or semivolatile or subject to oxidation or
                  biodegradation, respectively.
    10.4         TECHNOLOGY STRENGTHS AND LIMITATIONS
                 Most of the technologies available for treating ground water are discussed at
                 length in the attached documents. The strengths, limitations and waste
                 characteristics affecting treatment are described in detail.  Those technologies not
                 described (horizontal wells and permeable treatment zones) are described in
                 Sections 10.5 and 10.6.
                                              10-2
    

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    10.5          HORIZONTAL WELLS FOR IN SITU REMEDIATION
    
           The Department of Energy (DOE) has developed a new remediation technology, known as
    in situ air stripping, to remove chlorinated solvents from soil and ground water.  The first field
    application of the process will demonstrate the removal  of trichloroethylene from soil and ground
    water beneath a leaky abandoned process sewer line at the Savannah River Site in South Carolina.
    The process combines vapor extraction and air injection using horizontal wells.  The combination
    of vapor extraction and air injection will allow for concurrent remediation of both the ground
    water and the overlying soil.
    
           Horizontal wells have been installed in oil fields to inject steam and carbon dioxide gas to
    improve oil production and have been used to remove gas from coal mines. The geometry of
    horizontal wells may improve the performance of in situ remediation technologies.  Horizontal
    wells can provide more contact area with the contaminant plume. Because many water-bearing
    formations are deposited as relatively thin but extensive zones, the use of horizontal wells may
    improve the efficiency of delivery of reactants to or recovery of contaminants from these
    formations.  In addition, horizontal wells can be used along linear sources of contamination and
    under existing facilities.
    
           The first phase of the DOE demonstration  project consists of sparging (pumping air into)
    the aquifer and collecting the purged chlorinated volatile organics through a second horizontal
    well located in the vadose  zone. Testing was conducted in the summer of 1990.
    
           The results of the first phase show success  in the removal of volatile organic compounds
    (VOC) from the subsurface.  From July 27, 1990 to December 18, 1990, almost  16,000 pounds of
    trichloroethylene and tetrachloroethane were removed from the soil and ground water of  the test
    site. The extraction rate varied from 100 to 140 pounds per day depending on the  rate of air
    injection. The concentrations of trichloroethylene in  the ground water decreased from a  range of
    500 ppb to 1800 ppb at the beginning of the test to a  range of 10 ppb to 1031 ppb  at the  end of
    the test.  Concentrations in all wells decreased during while air was injected into the aquifer at a
    medium rate (170 scfm).
    
           The data indicate that the performance of the system can be affected by the permeability
    of the subsurface layers. In the case of highly permeable subsurface layers, some of the injected
    gas and accompanying volatilized contaminants may travel through the areas of high permeability
    and escape the system rather than flow  in the intended  pathways. Such  short circuiting may
    result in uncontrolled emissions through such things as monitoring wells. With subsurface layers
                                               10-3
    

    -------
    of low permeability some of the injected gas and volatilized contaminants may concentrate just
    below the subsurface layer.
    
           Subsequent project phases will consist of injecting steam into the ground water and
    perhaps an augmented aqueous solution to enhance bioremediation.
    
    10.6          PERMEABLE STATIONARY TREATMENT ZONES
    
           The University of Waterloo, in Ontario, Canada, is doing research into treatment zones
    within an aquifer that clean contaminants from ground water as it passes through the zone.  This
    emerging technology is based on  building a "curtain" within or in front of a contaminated plume
    in much the same fashion as a grout curtain is placed to control ground water movement. This
    curtain is permeable, however, and works to clean the ground water rather than control its
    movement. Preliminary  work is being done with both chemically reactive barriers and biological
    walls.  With a chemically reactive barrier, the contaminants in the ground water are chemically
    changed (i.e. dechlorinated) as they pass through the zone.  If the wall is designed to promote
    biological degradation, they will be used to uniformly add nutrients and oxygen to the  ground
    water system as it moves through.
    
           Although research in the area  is just beginning, these permeable treatment zones may
    have several theoretical advantages compared to other ground water treatment technologies. The
    barriers treat the ground water in situ, avoiding all the expense and difficulty of extracting the
    ground water and contaminants for treatment.  Because the zones provide a  uniform method of
    delivering material to the ground water system, they may avoid the problems of short circuiting
    sometimes found when chemicals or nutrients are delivered through a system of wells.
                                               10-4
    

    -------
    10.7
    EXHIBIT 1 - TREATMENT TECHNOLOGIES FOR GROUND WATER
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    10.8
            EXHIBIT 2 - STATUS OF SELECTED TECHNOLOGIES
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          10.9
    Technology Profile
    EXHIBIT 3 - SITE TECHNOLOGY PROFILE - E.I. DUPONT DeNEMOURS
    AND COMPANY/OBERLIN FILTER COMPANY
    
                 DEMONSTRATION
                     PROGRAM
                   E.I. DUPONT DE NEMOURS AND COMPANY
                             OBERLJN FILTER COMPANY
                                (Membrane Microfiltration)
    TECHNOLOGY DESCRIPTION:
    
    This microfiltration system is designed to
    remove solid particles from liquid wastes,
    forming filter cakes typically  ranging from
    40 to 60 percent solids.  The system can be
    manufactured as an enclosed unit, requires
    little or no attention  during  operation,  is
    mobile, and can be trailer-mounted.
    
    The DuPont/Oberlin microfiltration system
    (Figure 1) uses Oberlin's automatic pressure
    filter combined with DuPont's special Tyvek
    filter material (Tyvek T-980) made of spun-
    bonded olefin. The filter material is a thin,
    durable plastic fabric with tiny  openings
    (about one ten-millionth of  a  meter in
    diameter)  that allow water or other liquids,
    along with solid particles smaller than the
    openings,  to  flow through.  Solids in the
    liquid  stream that  are  too large  to pass
    through the  openings accumulate on the
    filter,  and can  be easily collected for
    disposal.
                                 AIR CYLINDER
                              The  automatic  pressure  filter   has   two
                              chambers  --an  upper chamber for feeding
                              waste through the filter, and a lower chamber
                              for collecting the filtered liquid (filtrate). At
                              the start of a filter cycle, the upper chamber
                              is lowered to form a liquid-tight seal against
                              the filter.  The waste feed is then pumped into
                              the upper chamber and  through  the filter.
                              Filtered  solids  accumulate  on the  Tyvek
                              surface, forming a filter cake, while filtrate is
                              collected in  the lower  chamber.   Air is fed
                              into the upper chamber at about 45 pounds per
                              square inch, and used to further dry the cake
                              and remove any liquid remaining in the upper
                              chamber.  When the cake is considered to be
                              dry, the upper chamber is lifted and the filter
                              cake is automatically discharged. Clean filter
                              material is then drawn from a roll into the
                              system for the next cycle.  Both the filter cake
                              and the filtrate can be collected and  treated
                              further prior to disposal if necessary.
                          FILTER CAKE
                     USED TYVEK"1'MEDIA
    
                         FILTRATE CHAMBER
                                                                     WASTE
                                                                     FEED
    
                                                          AIR BAGS
    
                                                         WASTE FEED CHAMBER
                                                              CLCAN TYVEK'0
                                                              MEDIA ROLL
                                       FILTER BELT
                           Figure 1. DuPont/Oberlin microfiltration system.
    
    
           Source: The Superfund Innovative Technology Evaluation Program: Technology Profiles,
                 EPA/540/5-90/006 (1990).
                                             10-7
    

    -------
    WASTE APPLICABILITY:
    
    This treatment technology is applicable to
    hazardous  waste  suspensions, particularly
    liquid  heavy  metal-  and cyanide-bear ing
    wastes (such as electroplating rinsewaters);
    groundwater  contaminated   with  heavy
    metals;   landfill   leachate;   and  process
    wastewaters  containing  uranium.    The
    technology is best suited for  treating wastes
    with solid concentrations less than  5,000
    parts  per   million;  otherwise,  the   cake
    capacity and  handling  become  limiting
    factors. The developers claim the system can
    treat any type of solids, including inorganics,
    organics, and oily wastes with a wide variety
    of particle sizes.  Moreover, because the unit
    is enclosed, the system is said to be capable
    of treating liquid wastes containing volatile
    organics.
    STATUS:
    
    This technology was  demonstrated  at  the
    Palmerton Zinc Superfund site in Palmerton,
    Pennsylvania.  The shallow  aquifer at  the
    site, contaminated  with dissolved  heavy
    metals  (such as cadmium, lead, and zinc),
    was  selected as the  feed  waste for  the
    demonstration.  Pilot studies on the ground
    water have shown that  the microfiltration
    system can produce a 35 to 45 percent-solids
    filter cake, and a filtrate with non-detectable
    levels of heavy metals.
    
    The  demonstration  was conducted over  a
    four-week period in April  and May  1990.
    A Demonstration Bulletin summarizing  the
    results  at the demonstration was prepared in
    August 1990.   A  Technology Evaluation
    Report, Applications Analysis Report, and
    video of  the demonstration are currently
    being finalized.
    DEMONSTRATION RESULTS:
    
    During  the  demonstration at the Palmerton
    Zinc  Superfund  site,  the  DuPont/Oberlin
    microfiltration system achieved the following
    results:
    
    •      Zinc  and   total   suspended  solids
           removal efficiencies ranged from 99.75
           to 99.99 percent.
    
    •      Solids in the filter cake ranged from
           30.5  to 47.1 percent.
    
    •      Dry filter cake in all test runs passed
           the RCRA permit filter liquids test.
    
    •      Filtrate  met the applicable  National
           Pollution Discharge Elimination System
           standard  for zinc, but exceeded the
           standard for pH.
    
    •      A composite filter cake sample passed
           the EP Toxicity and TCLP  tests for
           metals.
    FOR FURTHER INFORMATION:
    
    EPA Project Manager
    John F. Martin
    U.S. EPA
    Risk Reduction Engineering Laboratory
    26 West Martin  Luther King Drive
    Cincinnati, Ohio 45268
    513-569-7758
    FTS: 684-7758
    
    Technology Developer Contact:
    Ernest  Mayer
    E.I. DuPont de Nemours and Company
    Engineering Department LI359
    P.O. Box 6090
    Newark, Delaware 19714-6090
    302-366-3652
    November 1990
                                             10-8
    

    -------
          10.10
    Technology Profile
    EXHIBIT 4 - SITE TECHNOLOGY PROFILE - TECHTRAN, INC.
    
                 DEMONSTRATION
                     PROGRAM
                                    TECHTRAN, INC
                       (Combined Chemical Binding/Precipitation
                        and Physical Separation of Radionuclides)
    TECHNOLOGY DESCRIPTION:
    
    This   chemical   binding  and   physical
    separation method involves rapid, turbulent,
    in-line mixing of a proprietary fine powder
    (RHM 1000) containing complex oxides and
    other reactive binding agents.  RHM 1000
    absorbs,  adsorbs,  and   chemisorbs  most
    radionuclides and  heavy metals  in  water,
    sludges, or soils (pre-processed into slurry),
    yielding   coagulating,   floculating   and
    precipitating  reactions.   The  pH, mixing
    dynamics, and processing rates are  carefully
    chosen   to   optimize   the   binding  of
    contaminants.
    
    Water is  separated from the solids using a
    reliable, economical, two-stage process based
    on: (1) particle size and density separation,
    using clarifier technology and microfiltration
    of  all particles  and  aggregates;  and  (2)
    dewatering, using a filter press, to produce a
                              70  to 85  percent dry  filter  cake  with the
                              concentrated radionuclide(s), heavy metal(s),
                              and other solids. The filter cake is collected
                              and stabilized for disposal.
    
                              Figure  1  shows a  diagram of  the  steps
                              employed in  this process for water.  The
                              amount of RHM 1000 required for processing
                              ranges  from  0.1%  to  less  than  0.01%,
                              depending on the application.
    
                              The  process   is  designed for  continuous
                              through-put for water (50-1500 gal/min) or
                              batch mode sludge and  soil  processing (300
                              tons per 8 hr. day).  This  technology can
                              accommodate trace levels, naturally occurring
                              radioactive materials  (NORM), and low-level
                              radioactive wastes.  The equipment is trailer-
                              mounted for  use as  a  mobile field system.
                              Larger  capacity  systems could  be  skid-
                              mounted.
           CONTAMINATED
               WASTE
               WATER
                                                               SECONDARY
                                                                 SOLIDS
                                                              SEPARATIONS
                           PRIMARY
                            SCUDS
                          SEPARATIONS
                       Figure 1. Schematic Diagram of Continuous Throughput for Removing
                               Radiounuclides and Heavy Metal Contaminated Wastewater.
       Source-The Superfund Innovative Technology Evaluation Program:  Technology Profiles,
              EPA/540/5-90/006 (1990).
                                                 10-9
    

    -------
    WASTE APPLICABILITY:
    
    The technology can be used for (1) cleanup
    and remediation of water, sludges, and soils
    contaminated with radium, thorium, uranium
    and heavy metals from uranium mining/
    milling  operations;  (2) cleanup of  water
    containing NORM and heavy metals from oil
    and gas  drilling;  and  (3)  cleanup and
    remediation  of  man-made  radionuclides
    stored in underground tanks, pits, ponds, or
    barrels.  This technology is not applicable to
    water containing tritium.
    STATUS:
    
    This technology was accepted into the EPA
    SITE Demonstration Program in July 1990.
    The Department of Energy (DOE) is working
    with the EPA to evaluate  the TechTran's
    chemical binding and physical separation
    process.
    FOR FURTHER INFORMATION:
    
    EPA Project Manager
    Annette Gatchett
    U.S. EPA
    Risk Reduction Engineering Laboratory
    26 West Martin Luther King Drive
    Cincinnati, Ohio 45268
    513-569-7697
    FTS: 684-7697
    
    Technology Developer Contact:
    Tod S. Johnson
    TechTran, Inc.
    7705 Wright Road
    Houston, Texas  77041
    713-896-8205
    November 1990
                                           10-10
    

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      10.11
    EXHIBIT 5 - SITE TECHNOLOGY PROFILE - EXXON CHEMICALS, INC. &
    ROLINDA CHEMICAL CO.
    Technology Profile
                     DEMONSTRATION
                          PROGRAM
                             EXXON CHEMICALS, INC &
                              RIO LINDA CHEMICAL CO.
                       (Chemical Oxidation/Cyanide Destruction)
    TECHNOLOGY DESCRIPTION:
    
    This  technology  uses  chlorine  dioxide,
    generated on-site by a patented process, to
    oxidize  organically contaminated aqueous
    waste streams,  and simple  and  complex
    cyanide  in water or solid media.  Chlorine
    dioxide is an ideal oxidizing agent because it
    chemically alters contaminants to  salts and
    non-toxic organic acids.
    
    Chlorine dioxide gas is generated by reacting
    sodium chlorite solution with chlorine gas, or
    by reacting  sodium chlorite  solution with
    sodium hypochlorite and hydrochloric acid.
    Both processes produce at least 95 percent
    pure chlorine dioxide.
    
    In aqueous treatment systems  (Figure 1) the
    chlorine dioxide  gas is  fed into the waste
    stream via a venturi,  which  is the driving
                                  force for the generation system. The amount
                                  of chlorine dioxide required depends on the
                                  contaminant  concentrations  in  the waste
                                  stream and the concentration of oxidizable
                                  compounds, such as sulfides.
    
                                  In soil treatment applications, the chlorine
                                  dioxide  may   be   applied   in-situ  via
                                  conventional  injection  wells or  surface
                                  flushing.    The  concentration of chlorine
                                  dioxide  would   depend  on  the  level  of
                                  contaminants in the soil.
    
                                  Chlorine dioxide treatment systems have been
                                  applied to drinking water disinfection, food
                                  processing sanitation,  and as a  biocide in
                                  industrial  process  water.    Since  chlorine
                                  dioxide reacts via direct oxidation rather than
                                  substitution (as  does  chlorine), the  process
                                  does not form undesirable trihalomethanes.
                                                   Contamination Source
                                               (Wutewater or Cyanide-laden Soil)
                          Filten
                                  Precursor Chemicali
                                    Figure 1. Typical treatment layout
    
    
    
              Source: The Superfund Innovative Technology Evaluation Program:  Technology Profiles,
                    EPA/540/5-90/006 (1990).
                                             10-11
    

    -------
     WASTE APPLICABILITY:
    
     This  technology is  applicable  to  aqueous
     wastes,  soils, or any teachable solid media
     contaminated with organic compounds.  It
     can   also  be  applied   to  ground water
     contaminated with  pesticides or cyanide;
     sludges  containing cyanide, PCPs or other
     organics; and, industrial wastewater similar
     to refinery wastewater.
    STATUS:
    
    The  SITE  program  has  accepted  two
    proposals from  Exxon Chemicals, Inc. and
    Rio Linda Chemical  Company to perform
    two separate demonstrations: one of cyanide
    destruction  and  the  other  of  organics
    treatment.     Site  selection  for  these
    demonstrations is currently underway
    FOR FURTHER INFORMATION:
    
    EPA Project Manager:
    Teri Shearer
    U.S. EPA
    Risk Reduction Engineering Laboratory
    26 West Martin Luther King Drive
    Cincinnati, Ohio  45268
    513-569-7949
    FTS: 684-7949
    
    Technology Developer Contact:
    Tony Kurpakus
    Exxon Chemical Company
    4510 East Pacific Coast Highway
    Mailbox 18
    Long Beach, California  90805
    213-597-1937
    November 1990
                                         10-12
    

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    10.12
    EXHIBIT 6 - SITE TECHNOLOGY PROFILE - ULTROX INTERNATIONAL
    Technology Profile
                       OEMONSTRATION
                           PROGRAM
                              ULTROX INTERNATIONAL
                            (Ultraviolet Radiation/Oxidation)
    TECHNOLOGY DESCRIPTION:
    
    This ultraviolet  (UV)  radiation/oxidation
    process uses UV radiation, ozone (O3) and
    hydrogen peroxide (H2O2) to destroy toxic
    organic compounds, particularly chlorinated
    hydrocarbons,  in  water.    The  process
    oxidizes  compounds  that  are  toxic  or
    refractory (resistant to biological oxidation)
    in concentrations of  parts per million or
    parts per billion.
    
    The  Ultrox system  consists  of  a  reactor
    module, an air compressor/ozone generator
    module,  and a  hydrogen peroxide feed
    system. It is skid-mounted and portable, and
    permits on-site treatment of a wide variety
    of  liquid   wastes,   such  as  industrial
    wastewaters, ground waters, and leachate.
                                   The  reactor size  is  determined  from  the
                                   expected  wastewater  flow  rate  and  the
                                   necessary hydraulic retention time to treat the
                                   contaminated  water.   The  approximate UV
                                   intensity, and ozone  and hydrogen peroxide
                                   doses are determined from pilot-scale studies.
    
                                   Influent  to  the  reactor   (Figure   1)  is
                                   simultaneously exposed  to  UV  radiation,
                                   ozone, and hydrogen peroxide to oxidize the
                                   organic compounds. Off-gas from the reactor
                                   passes   through   an   ozone   destruction
                                   (Decompozon)  unit,  which  reduces  ozone
                                   levels before air venting.  The  Decompozon
                                   unit  also  destroys gaseous  volatile organic
                                   compounds (VOC) stripped off in the reactor.
                                   Effluent from the  reactor are tested and
                                   analyzed before disposal.
                                      CtlMyfcC Oion* OtcompoMf
     Source: The Superfund Innovative Technology Evaluation Program: Technology Profiles
            EPA/540/5-90/006 (1990).
                                               10-13
    

    -------
     WASTE APPLICABILITY:
    
     Contaminated  ground   water,  industrial
     wastewaters   and   leachates  containing
     halogenated   solvents,   phenol,
     pentachlorophenol, pesticides,  PCBs, and
     other organic compounds are suitable for this
     treatment process.
    
     STATUS:
    
     A field-scale demonstration was completed
     in March 1989 at a hazardous waste site in
     San Jose, California. The test program was
     designed to evaluate the performance of the
     Ultrox  System at several combinations  of
     five operating parameters: (1) influent pH,
     (2)  retention  time, (3)  ozone  dose,  (4)
     hydrogen  peroxide dose,  and  (5)  UV
     radiation   intensity.     The  Technology
     Evaluation Report was published in January
     1990   (EPA/540/A5-89/012).      The
     Applications   Analysis  Report  is  being
     published  and  should  be  available  in
     December 1990.
    
     DEMONSTRATION RESULTS:
    
     Contaminated  groundwater treated by the
     Ultrox system met regulatory standards at
     the following operating conditions:
     Retention time         40 minutes
     Influent pH           7.2 (unadjusted)
     O, dose
     H,O; dose
     UV lamps
     Out of 44 VOC samples, three were chosen
     to be used as  indicator  parameters.   The
     VCXT removal efficiencies at these conditions
     are presented in Table 1.
                     TMUI
                   DATA KMM
                       13 m(/L
                       all 24 operating at 64 watts each
    l.l-DCA     11
    U.I-TCA    4J
    Toul VOCi  110
             33
    U-DCA     11
    UJ-TCA    U
    ToutVOCl  ISO
    l.l-DCA     1
    U.I-TCA
    ToulVOC*  U
                       U
                       SJ
                       0.75
                       M
                       MS
                       U
                       o.a
    a
    a
    91
                                    a
                                    a
                                    91
    Removal efficiencies for TCE were about 99
    percent.  Removal efficiencies for  1,1-DCA
    and 1,1,1-TCA were about 58 percent and 85
    percent,  respectively.   Removal efficiencies
    for total VOCs were about 90 percent.
    
    For some compounds, removal from  the water
    phase was due to both chemical oxidation and
    stripping. Stripping accounted for  12 to 75
    percent of the total removal for 1,1,1-TCA
    and 5 to 44 percent for l.l-DCA.   Stripping
    was less than 10 percent  for TCE and vinyl
    chloride, and was negligible  for other VOCs
    present.
    
    The Decompozon unit reduced ozone to less
    than  0.1  ppm   (OSHA  standards),  with
    efficiencies greater than 99.99 percent.  VOCs
    present in the air within the treatment system,
    at approximately 0.1 to 0.5  ppm,  were not
    detected  after  passing   through   the
    Decompozon unit.
    
    Very low TOC removal was found,  implying
    that  partial  oxidation of organics  occurred
    without complete conversion to CO2  and H2O.
    
    The average electrical energy consumption was
    about 11  kW/hour of operation.
    
    FOR FURTHER INFORMATION:
    
    EPA Project Manager
    Norma Lewis
    U.S. EPA
    Risk Reduction Engineering Laboratory
    26 West Martin Luther King  Drive
    Cincinnati, Ohio 45268
    513-569-7665
    FTS: 684-7665
    
    Technology Developer Contact
    David B. Fletcher
    Ultrox International
    2435 South Anne Street
    Santa Ana, California 92704
    714-545-5557
                                               10-14
    

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      10.13
    EXHIBIT 7 - SITE TECHNOLOGY PROFILE - ALLIED SIGNAL
    CORPORATION
     Technology Profile
                      DEMONSTRATION
                           PROGRAM
                           ALLIED SIGNAL CORPORATION
                                    [formerly Detox, Inc.]
                         (Submerged Aerobic Fixed-Film Reactor)
     TECHNOLOGY DESCRIPTION:
    
     This biological treatment system relies  on
     aerobic  microbial processes to  metabolize
     contaminants  present  in  a  liquid  waste
     stream.    The  system can  treat  liquids
     containing low concentrations (<20 parts per
     million,  ppm)  of  readily biodegradable
     materials and yield concentrations in the low
     parts per billion (ppb) range.
    
     The biological treatment system  consists of
     an  above   ground  fixed-film  reactor,
     supplemental  nutrient  storage  tank  and
     pump,  sump  tank  with  pump, cartridge
     filter,  and final activated-carbon  filter.
     High surface area plastic media is used to fill
     the reactor, and the water level  within the
     reactor is set to cover the plastic media.
     Bacterial growth is attached as film to the
     surface of the plastic media.
                                   The  bioreactor  is operated on a  one-pass,
                                   continuous-flow basis, at hydraulic retention
                                   times as low as one hour. The process begins
                                   (Figure  1) when contaminated water from a
                                   well  or equalization tank is pumped into the
                                   bioreactor.    The influent  waste  stream  is
                                   evenly dispersed over the reactor packing by
                                   a header-distribution system.  As  the waste
                                   stream passes through the reactor, the biofilm
                                   removes the biodegradable  organics.  An air
                                   distribution system below the plastic media
                                   supplies oxygen to the bacteria in the form of
                                   fine  bubbles.   An  effluent  water  header
                                   system collects water from the bottom of the
                                   reactor after it has been treated. Water exiting
                                   the reactor is first passed through a cartridge
                                   filter, to remove any excess biological solids,
                                   followed by  activated carbon treatment, to
                                   further   remove  any  remaining   organic
                                   compounds.   Depending upon the effluent
                                   water discharge criteria, the  cartridge  and
                                   carbon filters may not be needed.
              Process Stream Pipe
    CvtrMce
    Filter
    Optional
    
    
    v 	 ,
    	 ^
    
    
    
    
    
    
    Cartel
    Adsorption
    Tank
    (optional)
    IT— tl
                                                    Sump with
                                                    Pump
                                                    (optional)
                     Groundwater Well
    
    
                                Figure 1.  Proposed Detox biological treatment lyitem.
    Source: The Superfund Innovative Technology Evaluation Program:  Technology Profiles,
           EPA/540/5-90/006 (1990).
                                              10-15
    

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    WASTE APPLICABILITY:
    
    This technology  is typically used to treat
    groundwater and industrial  process waters,
    but  is also applicable  to  contaminanted
    lagoon and/or pond waters. The water to be
    treated must fall within a pH of 6.5 to 8.5, a
    temperature of 60-95°F, and be free of toxic
    and/or  inhibitory  compounds,   including
    certain  metals.    Readily  biodegradable
    compounds such as  methyl ethyl ketone
    (MEK) and benzene can be treated, along
    with some organic chemicals that are initially
    more resistant to biodegradation, such as
    chlorobenzene.   Halogenated compounds
    (such   as  tetrachloroethylene,
    trichloroethylene, and  chloroform) are not
    readily biodegraded and cannot be treated by
    this system.
    STATUS:
    
    Treatability tests are being  conducted  to
    determine whether the G&H  Landfill NPL
    site in Utica, Michigan will be suitable for
    the demonstration of this process.  If this site
    is selected, the demonstration  is expected to
    start in late Spring or Summer 1991.
    FOR FURTHER INFORMATION:
    
    EPA Project Manager:
    Ronald Lewis
    U.S. EPA
    Risk Reduction Engineering Laboratory
    26 West Martin Luther King Drive
    Cincinnati, Ohio  45268
    513-569-7856
    FT& 684-7856
    
    Technology Developer Contact:
    David Allen
    Allied Signal Corporation
    P.O. Box 1087R
    Morristown,  NY  07962
    201-455-5595
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    10.14    EXHIBIT 8 - SUBSURFACE CONTAMINATION REFERENCE GUIDE
    
            United States         Offica of Emergency and     EPA/540/2-90/011
            Environmental Protection    Remedial Response       September 1990
            Agency           Washington. DC 20460
    
            Suparfund
            Subsurface
            Contamination
            Reference Guide
                          10-17
    

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                                      EPA/540/2-90/011
                                       September 1990
    SUBSURFACE CONTAMINATION
           REFERENCE GUIDE
      Office of Emergency and Remedial Response
         U.S. Environmental Protection Agency
             Washington, DC 20460
                      10-18
    

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                                      NOTICE
    Development of this document was funded by the United States Environmental
    Protection Agency in part under Contract No. 68-C8-0058 to Dynamac Corporation.
    It has been subjected to the Agency's review process and approved for publication
    as an EPA document.
    
    The policies and procedures set out in this document are intended solely for the
    guidance of response personnel. They are not intended, nor can they be relied
    upon, to create any rights, substantive or procedural, enforceable by any party in
    litigation with the United States. The Agency reserves the right to act at variance
    with these policies and procedures and to change them at any time without public
    notice.
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                                     CONTENTS
     1.     Introduction  	
     2.     Subsurface Remedial Technologies	
           2.1   Pump and Treat	
                2.1.1  Continuous Pumping	
                2.1.2 Pulsed Pumping	
                2.1.3 Reinjection	
           2.2   Soil Vacuum Extraction	
                2.2.1  In-Situ Steam Extraction	
           2.3   Soil Flushing	
                2.3.1  Chemical Extraction	
           2.4   Containment	
           2.5   Bioremediation	
          2.6   In-Situ Vitrification	
          2.7   Treatment Combinations	
    3.    Contaminant Properties Affecting Subsurface Transport and Fate.
    4.    Table References	
    5.    Tables (enclosed)
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                                      Chapter 1
                                   INTRODUCTION
           Ground water contamination is a significant concern at approximately 70% of
     the Superfund sites. The difficulties associated with cleaning up contaminated
     ground water are becoming more and more evident as experience with this problem
     increases. A recent study of 19 ground water extraction systems (U.S. EPA, 1989,
     EPA/540/2-89/054) indicated several factors that can limit the effectiveness of the
     traditional pump-and-treat remediation systems and also identified possible
     enhancements than may improve the performance of these systems. Many of the
     factors limiting performance are a result of interactions between the contaminants
     and the subsurface environments and can be tied to particular contaminant
     properties (e.g., solubility, density) and/or the nature of the subsurface (e.g., low
     permeability, fractures).
    
           As a result of the referenced study several recommendations were made
     including a recommendation to collect more detailed data on the vertical stratigraphy
     of the subsurface, the vertical variations in contaminant concentration, and the
     proportion of contaminant sorted to the soil in the saturated zone. To the extent
     possible potential limitations should be recognized even before the investigation
     begins; i.e. during scoping, to better focus remedial investigation/feasibility study (Rl/
     FS) efforts.
    
           This guide was developed to provide a source of information pertaining to
     important fate and transport properties for a variety of contaminants commonly found
     in ground water at Superfund sites. This information may help to focus site
     investigation efforts and identify eariy-on potential remediation strategies.
     Knowledge pertaining to the magnitude of these properties can be used to help to
     project whether contaminants will sort) significantly to soils, dissolve and move with
     ground water flow, migrate downward as a separate phase, or float on the water
     table. Potential remedial technologies have been identified for various combinations
     of contaminant types and hydrogeological environments.
    
           Information pertaining to contaminant fate and transport  properties are
     presented in tabular form and provided as fold-out charts for easy reference.
    
           This document was prepared as a task of the Subsurface Remediation
     Information Center located at the U.S. EPA Robert S. Kerr Environmental Research
     Laboratory (RSKERL), Ada, Oklahoma. Questions pertaining to the information
    contained in this document should be addressed to John E. Matthews at RSKERL-
    Ada (405/332-8800).
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                                     Chapter 2
                     SUBSURFACE REMEDIAL TECHNOLOGIES
           Subsurface remedial technologies which may be applicable at Superfund
     sites are described below.  These descriptions are intended as guidance for use in
     conjunction with the tabular data presented in the fokdout charts (Tables 2 and 3).
     2.1    PUMP AND TREAT
    
           2.1.1 Continuous Pumping
    
           Pump and treat remediation technology is applicable to the saturated zone
     and refers to the extraction of contaminated ground water from the subsurface and
     subsequent treatment of the extracted ground water at the surface. Extraction of
     contaminated ground water is accomplished through the use of extraction (pumping)
     wells which are completed at specified locations and depths to optimize contaminant
     recovery.   Determination of the locations and depths of extraction wells requires
     prior delineation of the contaminant plume and knowledge of the aquifer properties.
     Injection wells may be installed to enhance contaminant recovery by flushing
     contaminants toward extraction wells.
    
           Pump and treat technology is best suited for managing mobile chemicals (i.e.,
     log KK or log K^ values less than 3.0 and 3.5, respectively) residing in relatively
     permeable and homogeneous hydrogeologic settings. Factors which must be
     considered and may limit the ability of pump and treat remediation treatment to
     achieve cleanup concentrations in the ground water include: 1) the presence of
     chemicals with relatively high Kw or K^ values (e.g. tog KM > 3.0 or log K^ > 3.5),
     2) aquifers exhibiting low permeability properties (e.g.. < 10* cm/s), 3) highly
     heterogeneous hydrogeologic settings (e.g. highly stratified aquifers with multiple
     layers of coarse and fine textured material), and 4) the presence of spatially
     discontinuous or  inaccessible dense non-aqueous phase liquid (DNAPL).
    
          Pump and treat technology may, in many cases, be used to aid in the removal
     of light non-aqueous phase liquid (LNAPL) and/or DNAPL which  may be present.
     Recovery of LNAPL residing as free product on the surface of the water table, for
    example, can be facilitated by using pumping wells to create cones of depression.
    DNAPL residing as large pools in topographical lows at the bottom of aquifers can
    be recovered by pumping from wells screened over the thickness of the pools.  In
    cases where recovery is not feasible (e.g., DNAPL resides in fractures or is present
    as spatially discontinuous free product within an aquifer), alternative measures such
    as physical containment (e.g. cement-bentonite walls) should be  considered.
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           Pumping technology may also be used as a means of containing or
     controlling contaminant plumes. This is accomplished through control of hydraulic
     gradients by selectively locating pumping wells in the area of the plume. Control of
     hydraulic gradients should be considered in conjunction with physical containment
     options.
    
           The surface treatment of extracted ground water will vary depending on the
     contaminants present. Typical actions include air stripping, activated carbon
     adsorption and biological treatment.  In some cases, treated ground water may be
     amended with nutrients and oxygen and reinjected into the subsurface to aid in
     stimulating biodegradative processes.
    
           Pump and treat remediation technology generally will play an important role
     in ground water cleanup.  For information regarding applicability of pump and treat
     technology and its modifications, contact Randall R. Ross at the RSKERL-Ada (405-
     332-8800).
    2.1.2 Pulsed Pumping
    
          Pulsed pumping is a modification of standard pump and treat technology
    which involves regular or periodic cessation of pumping activities to optimize ground
    water cleanup. Pulsed pumping may be necessary or more cost-effective in cases
    where extraction wells can not sustain yields (e.g., in bedrock and unconsolidated
    deposits of low permeability), where desorption and/or dissolution of contaminants in
    the subsurface is relatively slow, or where hydraulic conductivity heterogeneity is
    high.  Pulsed pumping may be appropriate for:  1) low yield consolidated and
    unconsolidated deposits; 2) relatively homogeneous hydrogeologic settings
    containing contaminants with log K^. values between 2.0 and 4.0 (or log K^ values
    between 2.5 and 4.5); 3) heterogeneous formations consisting of alternating high
    and low permeability layers and containing contaminants with log KK and log K^
    values less than 3.0 and 3.5, respectively; and 4) hydrogeological settings
    containing low to moderately soluble residual non-aqueous phase liquid (NAPL).
    
          A potential concern associated with implementation of pulsed pumping is the
    uncontrolled migration of the contaminant plume during non-pumping phases.
    Nearby water supply wells or irrigation systems may significantly impact the behavior
    of the contaminant plume during non-pumping phases and thereby create a
    potentially more serious contamination scenario.
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     2.1.3  Relnjectlon
    
           Reinjection, which often is used in combination with pump and treat or pulsed
     pumping, generally refers to injection of treated ground water back into the
     subsurface.  Reinjection may be accomplished through the use of injection wells or
     other means such as infiltration galleries. Reinjected ground water can be used to
     help remove contaminants residing in the unsaturated zone by forcing these
     contaminants towards extraction wells.  Reinjection also may be used in the
     stimulation of biodegradative processes in the saturated zone, thereby enhancing
     cleanup of the saturated zone. In such cases, the injectate is amended with
     nutrients and an oxygen source.  In special cases, the injectate may be amended
     with surfactants or other compounds (i.e. chemical extraction) to facilitate removal of
     adsorbed and residual organics in the unsaturated and/or saturated zones.
           SOIL VACUUM EXTRACTION
    
           Vacuum extraction technology involves the enhanced removal of chemicals in
    the subsurface through application of a vacuum.  The applied vacuum enhances
    volatilization of compounds from soil and pore water.  The technology is particularly
    applicable to relatively volatile organic compounds (Henry's Law Constant > 10'3
    atm-m3/mole) residing in the unsaturated zone.  The technology also is applicable
    for removal of volatile light non-aqueous phase liquids (LNAPLs) floating on the
    water table or entrained in the capillary fringe.  The process involves installation of
    vacuum extraction wells at strategic locations and depths. The spacing of extraction
    wells is dependent on soil properties such as permeability and porosity. The
    technology is applicable to most soil types although removal efficiency will generally
    decrease with decreasing soil permeability and increasing subsurface stratigraphy
    (heterogeneity).
    
           Vapors released from the subsurface as a result of the vacuum extraction
    process may be captured and then processed through a liquid-vapor separator.  The
    separated volatile organic vapor fraction may be treated with activated carbon or
    other means.
    
           Vacuum extraction also can serve a dual purpose by enhancing removal of
    subsurface organic contaminants through stimulation of aerobic biodegradative
    processes.  This is accomplished by ensuring a constant and ample supply of
    oxygen for use by indigenous subsurface microbial populations.
    
          Vacuum extraction also may be used in conjunction with in-situ steam
    extraction (see description below). Steam extraction may enhance the recovery of
    organic chemicals, including NAPL's, from the vadose zone.
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           Vacuum extraction is a proven remedial technology which is being
     increasingly applied at Superfund sites.  For further information regarding the
     applicability of vacuum extraction contact Dominic OiGiulio at the RSKERL-Ada
     (405-332-8800).
     2.2.1  In-Situ Steam Extraction
    
           In-situ steam extraction facilitates the removal of moderately volatile (ia3 >
     v.p. > 10*° mm Hg) residual organics, including NAPLs, from the vadose zone.
     Steam extraction technology utilizes injection of pressured steam to the
     contaminated horizon to thermally enhance the evaporative rate of the contaminant
     and its subsequent removal. Injection of steam also can be expected to enhance
     removal of residual NAPL's in the unsaturated zone by decreasing their viscosities.
     Steam extraction is an emerging technology that appears promising, particularly if
     used in conjunction with vacuum extraction.
    2.3   SOIL FLUSHING
    
          Soil flushing technology involves the use of extractant solvents to remove
    organic and/or inorganic contaminants from soils in the subsurface.   Extractant
    solvents may include water, water-surfactant mixtures, acids, bases, chelating
    agents, oxidizing agents and reducing agents.  The extractants used, however,
    should be limited to those which exhibit low toxicity and will not otherwise adversely
    impact the subsurface environment.  Proper control measures must be exercised to
    prevent migration of extractant-contaminant mixtures from the vadose zone into
    ground water.
    
          In-situ soil flushing can be applicable to those compounds residing in the
    vadose zone which are not amenable to removal by vacuum extraction.  These
    compounds may include semi-volatile organics, cyanide salts, and metals (e.g.,
    selenium, arsenic, and hexavalent chromium).  Applications are limited to soils with
    adequate permeability (k > 10-s cm/s) and a reasonable degree of homogeneity.
    For semi-volatile organics amenable to biodegradation, bioremediation in concert
    with in-situ vacuum extraction (or alternative air circulation technology) will likely be a
    better choice.
    
           The effectiveness of soil flushing relative to other vadose zone remedial
    technologies is not clear. Due to the potential  environmental impact of in-situ soil
    flushing, the technology should only be used in situations where other remediation
    technologies of lower potential environmental impact are not appropriate.
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           Soil flushing has been used at some Superfund sites although the level of its
     success is not clear.  For information regarding the applicability of soil flushing,
     contact John Brugger at the EPA Risk Reduction Engineering Laboratory, Edison NJ
     (201-321-6634).
     2.3.1  Chemical Extraction
    
           Chemical extraction as used in this document refers to a specialized form of
     soil flushing that applies only to the saturated zone.   This technology involves the
     use of extractant solvents to enhance desorption or solubilization of contaminants in
     the saturated zone in conjunction with pump and treat operations.  Extracted ground
     water is amended with solvents and/or other chemicals then reinjected at strategic
     locations into the aquifer.  The extractants used are similar to those used in soil
     flushing in the vadose zone.  Chemical extraction is most applicable in cases where
     contaminants are not easily mobilized or removed with water alone, i.e., strongly
     sorted to aquifer solids or present as residual saturation.  Caution should be
     exercised when  using chemical extraction methods, however, because of the
     potential adverse impact introduced chemicals may have on the subsurface
     environment.
     2.4   CONTAINMENT
    
          Containment technologies are used to isolate contaminated areas in the
     subsurface from the surrounding uncontaminated environment. Containment
     usually involves installation of an impermeable barrier around, or a cap over, the
     affected area.  The barrier may take the form of a slurry wall (e.g. soil-bentonite wall
     or cement-bentonite wall), a grout curtain, or sheet piling cut-offs.  In the saturated
     zone, these barriers must be tied into an impermeable layer at the base of the
     aquifer. Containment, although not considered a remediation technology, warrants
     consideration in concert with remedial technologies or as an interim measure while
     remediation technologies can be considered.  Spatially discontinuous  DNAPL
     residing within an aquifer, for example, may be an appropriate scenario for
     considering containment. The selection of the barrier material must take into
     account the compatibility of the material with the contaminant(s) in question.
     Containment also may. include installation of a cap over the contaminated area to
     impede infiltration of water into that area.
    
          Another method of controlling contaminant migration is hydraulic containment.
     Hydraulic containment involves retardation of movement of a ground water
    contaminant plume by using pumping wells to control hydraulic gradients.  Hydraulic
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     containment may be used early in a site investigation to prevent plume expansion
     while a more detailed characterization is completed.
    
           For information regarding the applicability of containment technologies,
     contact Or. Walter Grube at the EPA Risk Reduction Engineering Laboratory,
     Cincinnati, OH (513-569-7798).
    2.5    BIOREMEDIATION
    
           Bioremediation technologies involve enhancing biodegradation of
    contaminants in the saturated and unsaturated zones of the subsurface environment
    through the artificial stimulation of indigenous soil and ground water microbial
    populations.  Natural biodegradative processes are enhanced by optimizing
    conditions necessary for subsurface microbes to grow and complete metabolic
    pathways.  Bioremediation is applicable only for treating organic contaminants.
    Bioremediation should only be considered in conjunction with source control.
    
           Bioremediation for subsurface contamination often can be carried out in situ.
    The successful execution of an in-situ bioremediation program will depend upon:  1)
    amenability of the organic compound(s) to biodegradation, 2) permeability and
    heterogenic properties of the subsurface regime,  3) ability of the delivered oxygen
    and nutrients to reach the contaminated area, and 4) other factors such as
    temperature and pH.
    
           In situ bioremediation in the saturated zone can be applied as a specialized
    form of pump and treat.  Extracted ground water from the contaminated zone is
    treated at the surface, amended with nutrients and oxygen, and then reinjected into
    the subsurface at strategic locations.  Difficulties may arise in the dissemination of
    oxygen and nutrients in low permeability or highly heterogeneous regimes.  Some
    states may not allow reinjection of treated ground water; therefore, amendments
    must be delivered to the injection point in clean water.
    
           In situ bioremediation in the unsaturated (vadose) zone can be applied as a
    specialized form of soil vacuum extraction.  The air circulation induced by soil
    vacuum extraction ensures an ample supply of oxygen to the indigenous microbial
    population. Other vadose zone in situ bioremediation systems use infiltration
    galleries or injection wells for delivery of oxygen and nutrients.
    
           Bioremediation is a promising technology for vadose zone soils and
    contaminated ground waters. For further information regarding the applicability of
    bioremediation, contact John E. Matthews, Scott G. Huling or John T. Wilson at the
    RSKERL-Ada (405-332-8800).
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     2.6   IN-SITU VITRIFICATION
    
           In-situ vitrification (ISV) transforms contaminated soil into an inert glass-like
     mass that is highly resistant to weathering and leaching.  The technique employs
     electrodes and a high amperage current to heat surrounding soil from 1600°C to
     2000 °C.  When operating temperatures are reached a molten mass of
     contaminated soil is created.  As the mass expands it assimilates nonvolatile
     compounds into its structure and destroys volatile organic compounds by pyrolysis.
     The technology is generally more applicable at sites having soils contaminated with
     metals or organic chemicals exhibiting high K^ or K^ values.
    
           In-situ vitrification is a proven technology which has been implemented at
     selected sites. For further information regarding the applicability of in-situ
     vitrification, contact Ten Shearer at the EPA Risk Reduction Engineering
     Laboratory, Cincinnati, OH (513-569-7949).
     2.7   TREATMENT COMBINATIONS
    
          Often it will be necessary to implement a combination of treatment
     technologies to effectively remediate or control subsurface contamination.   An
     example of such a combination is pump and treat with in-situ bioremediation or
     chemical extraction. One of these combinations may be appropriate at sites where
     contaminants are strongly adsorbed within the aquifer, and pump and treat alone is
     expected to have limited success.  In-situ bioremediation  or chemical extraction
     could facilitate removal of the strongly sorted contaminants, thereby enhancing the
     overall remediation effort.  In general, in-situ bioremediation or chemical extraction
     would be most effective after initial recovery efforts using pump and treat alone have
     been completed.
    
          Another useful treatment combination involves pump and treat and
     containment. This combination may be of interest in cases where DNAPL is
     distributed in a spatially discontinuous manner within the aquifer.  Because DNAPL
     recovery in such a case would be very difficult, the only recourse might be to control
     and/or contain the contamination. Pump and treat would  initially be used to draw in
     or reduce the size of the aqueous phase contaminant plume generated by the
     DNAPL.  Physical containment would then be used to isolate the DNAPL source
     area.
    
          An additional treatment combination which may be  of interest is aquifer
    dewatering using pump and treat followed by soil vacuum extraction. This
    combination of technologies may be of use in cases where an aquifer is
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    contaminated with volatile organics and dewatering portions of the aquifer is
    feasible.  Pumping would be used to dewater a portion of the aquifer so that
    vacuum extraction could be applied to enhance volatilization and biodegradation of
    the volatile organics contaminants in the dewatered zone.
    
          Combinations involving more than two treatment technologies also should be
    considered in efforts to optimize cleanup of subsurface contamination.
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                                    Chapter 3
                     CONTAMINANT PROPERTIES AFFECTING
                       SUBSURFACE TRANSPORT AND FATE
          The following is a description of some important properties which may play an
     important role in the transport and fate of contaminants in the subsurface.  These
     descriptions are intended to provide guidance for using the tabular information
     provided in the foldout charts (Tables 2 and 3).
     Melting Point - The melting point of a compound provides an indication of the
           physical state of a pure compound at field temperatures. Compounds with
           melting points above 30°C, for example, would be expected to be immobile in
           pure form. Such compounds would be of primary concern when in the
           dissolved phase, either in water or other solvent. Compounds with melting
           points lower than 30°C may be present as mobile non-aqueous phase liquid.
    
    Water Solubility - Water solubility governs the extent to which a contaminant will
          partition into the aqueous phase. More soluble contaminants would be
          expected to migrate further in the subsurface than less soluble compounds.
          The greater the water solubility of a compound, the greater will be the
          tendency for that compound to migrate with the aqueous advective flow
          component. Contaminants with higher water solubilities are more amenable
          to removal from the saturated zone by pump and treat technology. These
          same compounds,  however, are more likely to migrate through the vadose
          zone to ground water.
    
    Vapor Pressure - The vapor pressure of a compound provides an indication of the
          extent to which the compound will volatilize. The tendency of a compound to
          volatilize will rise proportionately with its vapor pressure. Compounds with
          higher vapor pressures are more amenable to treatment with vacuum
          extraction technologies. For comparative purposes, the vapor pressure of
          water at 20°C is 17.5 mm Hg.
    
    Henry's Law Constant -  Henry's Law Constant provides an indication of the extent
          to which a compound will volatilize from an aqueous solution. Henry's Law
          Constant is directly proportional to the vapor pressure of the compound and
          inversely proportional to the  water solubility of the compound. The greater
          the Henry's Law Constant of a compound, the greater will be the tendency of
          the compound to volatilize from aqueous solution. Compounds with higher
          Henry's Law Constants are more amenable to treatment with vacuum
          extraction technologies.
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    Density • The density of a compound indicates whether the compound is heavier or
          lighter than water.  (The density of water is approximately 1.0 g/cc). Liquid
          compounds with densities greater than 1.0 g/cc and of only limited water
          solubility (i.e. ONAPLs), may migrate vertically under the influence of gravity.
          DNAPLs may eventually gravitate to the  bottom or other region of an aquifer
          where an impermeable layer is encountered. Compounds with limited water
          solubility and with densities less than 1.0 g/cc will tend to float on the water
          table.
    
    
    Dynamic Viscosity - Dynamic viscosity provides an indication of the ease with
          which a compound (in its pure form) will flow.  The mobility of the compound
          in pure form is inversely proportional to its dynamic viscosity. The dynamic
          viscosity  of water is approximately 1.0 centipoise (cp).
    
    Kinematic Viscosity - The kinematic viscosity of a compound takes into account
          the density of the compound and provides an indication of the ease with
          which the compound (in its pure form) will percolate through the subsurface.
          The lower the kinematic viscosity of a compound, the greater will be its
          tendency to migrate in a downward direction. Kinematic viscosity is of
          particular importance with regard to the movement of DNAPLs in aquifers.
          The lower the kinematic viscosity of a DNAPL, the greater will be the ease
          with which the  DNAPL will move downwards and penetrate the finer grained
          layers in the subsurface. The kinematic viscosity of water is approximately
          1.0 centistokes (cs).
    
    Octanol/Water  Partition Coefficient (K^) - The octanol/water partition coefficient is
          a measure of the extent to which a contaminant partitions between octanol
          and water.  It is the ratio of the concentration of the compound in octanol to
          the concentration of the compound in water. The K^ provides an indication of
          the extent to which  a compound will adsorb to a soil or an aquifer solid,
          particularly organic material. The greater the K^ value of a compound, the
          greater will be its tendency to be adsorbed in the subsurface.
    
    Organic Carbon Partition Coefficient (K^) - The organic carbon partition
          coefficient is the ratio of the amount of chemical adsorbed per unit weight of
          organic carbon in the soil to the concentration of the chemical in solution at
          equilibrium.  The KK is similar to the KM.
    
    Biodegradability Potential - The biodegradability potential of a compound is
          important in determining the feasibility of using bioremediation as a treatment
          technology.  The greater the biodegradability of a compound, the greater will
          be the susceptibility of the compound to a bioremediation process. Only
          aerobic biodegradability is addressed in this document.
    
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                               TABLE REFERENCES
     1 Arthur D. Little, Inc. 1985. The Installation Restoration Program Toxicology Guide.
           Arthur D. Little, Inc., Acorn Park, Cambridge, MA. vols. 1, 2, 3,4.
    
     Tabak. H.H., S.A. Quave, C.I. Mashni, and E.F. Barth. 1981. Biodegradability
           Studies with Organic Priority Pollutant Compounds. J. Water Poll. Control
           Fed. (53)10:150
           3-1518.
    
     *USGS. 1989. Properties and Hazards of 108 Selected Substances. US Geological
           Survey, Open-File Report 89-491.
    
     4USEPA. 1988. Soil Transport and Fate Database. Prepared by the Dept. of Civil
           and Environ. Engr.,  Utah St. Univ., Logan, UT for the R.S. Kerr Environmental
           Research Laboratory, Ada, OK, US Environmental Protection Agency.
    
     sSax, I., R. Lewis, Sr. 1987. Hawley's Condensed Chemical  Dictionary. Van
           Nostrand ReinhokJ Co., New York.
    
     •USDOE. 1986. Chemical Information Profile of Selected Hazardous Organic
          Chemicals. Oak Ridge National Laboratory, US Dept. of Energy. DOE No. 40-
           1583-85.
    
     7Verschueren, K. 1983. Handbook of Environmental Data on Organic Chemicals.
          Van Nostrand Reinhold Co., New York, 2nd.  ed.
    
     •Mackay, D., W.Y. Shiu. 1981. A Critical Review of Henry's Constants for Chemicals
          of Environmental Interest. Jour. Phys. Chem. Ref. Data, (10)4:1175-1199.
    
    •USEPA. 1989. Draft Guidance on Selecting Remedies for Superfund Sites with
          PCB Contamination. Remedial Operations and Guidance  Branch, Hazardous
          Site Control Div., Office of Solid Waste and Emergency Response.
          Unpublished Report.
    
    "Sax, N. 1968. Dangerous Properties of Industrial Materials. Van   Nostrand
          Reinhold Co., New York. 3rd. ed.
    
    "USEPA. 1986. Superfund Public Health Evaluation Manual. Office of Emergency
         and Remedial Response, Office of Solid Waste and Emergency Response,
         USEPA 540/1 -86/060.
                                          10-32
    

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    12EPRI. 1988. Chemical Data for Predicting the Fate of Organic Compounds in
          Water. Prepared by Tetra Tech, Inc. for the Electric Power Research Institute.
          EPRI EA-5818, Vol 2, Project 2879-2.
    
    "USEPA. 1990. Basics of Pump-and Treat Ground-Water Remediation Technology.
          Prepared by GeoTrans, Inc. for the US Environmental Protection Agency.
          USEPA/600/8-90/003.
    
    "USEPA. 1990. WERL Treatability Data Base/Superfund Treatability Data Base.
          Water Engineering Research  Laboratory, US Environmental Protection
          Agency, Cincinnati, Ohio.
    
    "Roy W.R. and R.A. Griffin. 1985. Mobility of Organic Solvents in Water-Saturated
          Soil Materials. Springer-Veriag, New York. Environ. Geol. Water Sci. 7(4):241-
          247.
    
    16USEPA. 1990. Drinking Water Regulations and Health Advisories. Office of
          Drinking Water, US Environmental Protection Agency. Unpublished Report.
    
    "CIS. 1990. Information System for Hazardous Organics in Water. On-line Data
          Service. Chemical Information System, Baltimore, Maryland.
                                           10-33
    

    -------
       10.15
    EXHIBIT 9 - A GUIDE TO PUMP AND TREAT GROUND-WATER
    REMEDIATION TECHNOLOGY
                            United States
                            Environmental Protection
                            Agency
                                       Solid Waste and Emergency
                                       Response
                                       (OS-110)
             September 1990
                           A Guide to Pump and  Treat Ground-
                           Water Remediation Technology
                 sunjnMrizesbwww                                     to detennine when, where, and howpump-
                                                                 i»nritmn^ pi^nT"^f , Itis based on the Office ofResearcb
      and DeveJoprocnt's Basics of Pump-ta&Treat Grouvt'Water Remediation Technology* EPA/600/8-90AXB.
    OVERVIEW
    While there are several ground-water containment and cleanup
    options available to choose firom, this fact sheet focuses on pump-
    and-treat technology.  The pump-and-treat process is the most
    commonly used ground-water remediation technology at hazard-
    ous waste sites. The objectives of pump-and-treat are to reduce
    the concentration of contaminants to an acceptable level during
    cleanup or to contain contaminants in order to protect the subsur-
    face firom further contamination. Pump-and-treat systems capture
    contaminated ground water for surface treatment. Thisfactsheet
    outlines the basic requirements for an effective pump-and-treat
                                         system, which include identifying the contaminant, characteriz-
                                         ing the subsurface, designing a capture system, installing extrac-
                                         tion wells, and monitoring the remediation progress. Here the
                                         "pump" portion of the pump-and-treat process is emphasized.
                                         Recent research has identified complex chemical and physical
                                         interactions between contaminants and the subsurface media that
                                         may limit the effectiveness of the extraction phase.  These
                                         important limitations of pump-and-treat technology are also de-
                                         scribed in this fact sheet
    CHOOSING PUMP-AND-TREAT
    REMEDIATION
    
    The first step in determining whether
    pump-and-treat is an appropriate ic^medi-
    al technology is to conduct a site charac-
    terization investigation. If the risk assess-
    ment snows the need for remedial action.
    then rite characteristics, such as hydraulic
    conductivity, win determine the range of
    remedial options possible.  Sources of
    ground-water contamination can include
    leaky tanks, leachate from landfills, spills,
    chemicals dissolving from nonaqueous
    phase liquids (NAPLs), and chemicals
    desorbing from the soil matrix.
                      Sites with ground-water contamination will
                      almost always include some form of pump-
                      and-treat remediation. Chemical properties
                      of the site and plume need to be determined
                      to characterize transport of the contaminant
                      and evaluate the feasibility of a pump-and-
                      treat system.  To determine if pump-and-
                      treat is appropriate at a given site, one needs
                      to know the  history of the contamination
                      event, properties of the subsurface, ground-
                      water flow characteristics, and biological
                      and chemical contaminant characteristics.
                      Identifying the chemical and physical site
    characteristics, locating the ground-water
    contaminant plume or NAPL in three di-
    mensions, and determining aquifer and
    soil properties are necessary in designing
    an effective  pump-and-treat strategy.
    Several remedial methods may be com-
    bined into a "treatment  train" to attain
    cleanup goals. The criteria listed below
    outline the information necessary to de-
    tennine if pump-and-treat systems  are
    applicable to a site.
                            I
             Criteria to Determine H Pump-and-Treat will be Effective
    I)  History of the contamination:   H) Characteristics of the subsurface flow system:      HI) Chemical and biological characteris-
                                                                                 tics at the contaminant:
       A history of the contamination
       event should be prepared to de-
       fine the types of wastes present at
       the site and quantify their loading
       to the system.
                   Ground-water flow systems vary with time, season,
                   md pumping strategy. Understanding where ground
                   water recharges and discharges (mass balance), the
                   laws governing flow (Darcy's law), and geologic
                   framework through which the flow passes makes it
                   possible to detennine ground-water flow character-
                   istics. Other subsurface flow system characteristics
                   include hydraulic conductivity, storage coefficient.
                   mineralogy, organic content, and aquifer thickness..
        Chemical characteristics of contaminants
        include solubility, density, reactivity, ion
        exchange capacity, and mobility in aque-
        ous solution. Biological charactehstics of
        contaminants include the potential for
        naturally occurring transformation  and
        biodegradadon.
                                                      10-34
    

    -------
    PUMP-AND-TREAT
    REQUIREMENTS
    
    Four basic components need to be devel-
    oped forasuccessful pump-and-treat sys-
    tem.
    
    Q Goals and objectives
    
    Q System design
    
    Q Operational rules and
       monitoring
    
    Q Termination criteria
    
    The first component consists of defining
    the remediation goals and objectives (re-
    medial action objectives) to be accom-
    plished at a given site. This involves
    gathering enough background site infor-
    mation and field dam  to make assess-
    ments of remedial requirements and pos-
    sible cleanup levels. The first determina-
    tion is whether cleanup or containment
    win be the most appropriate pump-and-
    treat remedial action. If cleanup is cho-
    sen, the level of cleanup must be deter-
    mined according to maximum contami-
    nant levels (MCLs) and alternate con-
    taminant levels (ACLs), state laws, or
    other criteria selected  for the site.  If
      containment is  chosen, pump-and-treat
      technology is used as a hydraulic barrier to
      prevent off-site migration of contaminant
      plumes. The goals and objectives chosen at
      this stage determine the course of the reme-
      diation plan.
    
      The next component consists of the design
      and implementation of the pump-and-treat
      system based on data evaluated in setting the
      goals and objectives. The system must be
      chosen and designed based on field data.
      Selection of a system is also dependent on
      whetherpump-and-treatissufficientormore
      than one remedial action will be used. The
      criteria for  well design, pumping system,
      and treatment are dependent on the physical
      site characteristics and contaminant type.
      The system may then be installed, including
      extraction wells, injection wells, drain inter-
      cepts, and barrier walls, if necessary.
    
      The third and most significant component
      for ensuring the long-term effectiveness of
      pump-and-treat is frequent monitoring of
      progress to verify if the remedial strategy is
      meeting remedial action objectives. Moni-
      toring die remedial process with wells and
      piezometers allows the operator  to ™**
      iterao've adjustments to the system in re-
      sponse to changes in subsurface conditions
      caused by the remediation.
    The final component in the pump-and-
    treat process is determining the termina-
    tion requirements. Termination require-
    ments are based on the cleanup objectives
    defined in the initial stage of the remedial
    process. The termination criteria are also
    dependent on the specific site aspects re-
    vealed during remedial operations.
    
    DATA COLLECTION
    
    Collecting as much background site data
    as possible initially may reduce theamount
    of time spent gathering data in the field.
    Accurate information on the type of con-
    taminants present and their loading capac-
    ity will promote a well-designed remedia-
    tion plan.  Contaminant  information
    needed consists of: 1) source character-
    ization, including the volume released,
    the area infiltrated, and duration of re-
    lease;  2) concentration distribution of
    contaminants and naturally occurring
    chemicals in ground water and soil; and 3)
    processes affecting plume development,
    such as chemical and biological reactions
    influencing contaminant mobility. Each
    step of the pump-and-treat strategy is de-
    pendent on the decisions reached in the
    previous step. Therefore, it is vital that
    each step is carefully planned and moni-
    tored to allow for modifications.
                                   1
    Example of a Pump-and-Treat System
                                                     ?, *• • ^S- JPUMPIIIO WtLUI
                                                                           __
              -*:''>-^:»!'^l:-L'.v'- ••••-/•••'  "^T^r^-gi
                                                                                                 &
                                                                  X.''5'
                                                                        WATIH TAICI
                                                                       ' IMOUt PtW»M<
                                                                        CONOITIOM1
                                                        10-35
    

    -------
    Undemanding the hydrogeology and ex-
    tern of contamination at a site are impor-
    tant in planning successful field studies.
    The hydrogeotogic aspects Used in Table
    1 (below) are vital in determining if a
    pump-and-treat system would be an ap-
    propriate remedial technology for a par-
    ticular site. These aspects include deter-
    mining the size of the contaminated aqui-
    fer, depth to water table, hydraulic con-
    and local ground-water use. Methods for
    determining aquifer properties include a
    slug test, pump test, and a borehole
    flowmetertest. The pump test consists of
    pompmg one well and measuring the wa-
    ter level response of surrounding wells.
    Pump tests sample large aquifer sections.
    A slug test measures the rate at which the
    water level in one well returns to its initial
    state after inducing a rapid water level
    change by introducing or withdrawing a
    vorameofwaier. Theboreholeflowmeter
    test measures flow direction and rate in a
    uQVBuOlfi* 1D696 vBSCS CAD IDQICStB tfl6 SDIk*
    rial variability of hydraulic conductivity.
    
    Once data have been collected, the infor-
    mation must be accurately interpreted.
    There are numerous tools that can be used
    to interpret data, including geochemical
    analysis,  geostatistical analysis, and
    mathematical  models.  Geochemical
    analysis uses ion ipmation  models to
    Geostatistical methods may be used to
                                        determine the relationship among various
                                        parameters and define the statistical prob-
                                        abilityofaparticularcondition. Mathemati-
                                        cal models may be used to simulate ground-
                                        water flow patterns, contaminant transport,
                                        and the changes resulting from apump-and-
                                        treat system.
    
                                        Water in a well bore seldom represents that
                                        of the adjacent aquifer.. Therefore, when
                                        sampling  ground water, pH, temperature,
                                        and conductivity should be measured and
                                        allowed to stabilize before a sample is taken
                                        to more accurately reflect the ground-water
                                        quality.
    
                                        SYSTEM DESIGN
    
                                        An effective pump-and-treat system depends
                                        on careful design of the  pumping and treat-
                                        me«cx>mponents based on the hyorogeologic
                                        information gathered at the site.  Design
                                        considerations include type and location of
                                        wells, pumps, and piping; drilling methods;
                                        and well design and construction. Extrac-
                                        tion wells may be used with injection wells
                                        if the hydraulk conductivity of the site
                                        material is high. Drains may be used if the
                                        contaminated aquifer is close to the surface.
                                        Intercept drains may be  appropriate when a
                                        shallow aquifer is surrounded by material
                                        with low hydraulic conductivity.  A long-
                                        term aquifer test (longer than a few days)
                                        can provide useful information and serve as
                                        a prototype for the pump-and-treat system
      ;^g *-V "<-,     ^s  '^^x\>v-:*^4   -
      • ;*",  ..-'•-.. fMM* *   AMM^tto^lAM,
                                                         Or ttcondny:
       *\
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       •>  *»»  ^ vrf
    - v.W0 s»  ' - -»"i
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       "    1»
       «*%•»•* ^ Q
                                                       , ad «veng» linev vebdtyw
          . Qfound W«ttf
              t;
                    ftfaf orn*«r-fitiu««pf|roaiidw«Br.
    Special care is required to avoid potential
    problems with well-construction materi-
    als, especially when dealing with NAPLs.
    Wells should be designed so that screens
    may be easily flushed and clogging prob-
    lems commonly caused by oxidation of
    manganese and iron can be treated. As-
    pects to consider when selecting pumps
    are failure rates, reactivity with contami-
    nants, and ease of maintenance. Backup
    equipment should be available in the event
    of failure.
    
    The types of pumping used at a site in-
    clude continuous and pulsed pumping.
    Continuous pumping maintains an inward
    gradient, constantly drawing ground wa-
    ter towards it. Pulsed pumping consists of
    alternating periods of time when the pumps
    are on and when they are off.
    
    Dependingon site characteristics and con-
    taminant properties, injection wells may
    be installed along with extraction wells to
    reduce cleanup time.  Injection wells in-
    crease the hydraulic gradient by flushing
    contaminants towards the extraction welL
    
    The pump-and-treat system should be
    evaluated periodically to determine if the
    goals and standards of the design criteria
    are being met Monitoring the remedial
    process allows for operational modifica-
    tions to be made. One modification that
    may improve the efficiency of contami-
    nant recovery is to switch from continu-
    ous to pulsed pumping. The non-pumping
    period during pulsed pumping allows the
    cmitpminflnm to diffuse and desorb from
    less permeable zones into adjacent zones
    of higher hydraulic conductivity, permit-
    ting more efficient contaminant extrac-
    tion when pumping resumes.
    
    Another design modification is to cycle
    pumping at selected wells in order to bring
    atagnan^ ZOMS inlO active flow p"hf for
    remediation. When less soluble contami-
    nants (NAPLs) are trapped in soil pores by
    interfacial tension, the flow rates during
    remediation may be too rapid for the con-
    taminant to reach chemical equilibrium.
    The non-pumping stage at selected wells
    provides  time  for sorbed and residual
    contaminants in the stagnant zone to reach
    equilibrium with the ground water. Dura-
    tion of pumping and non-pumping periods
                                                         10-36
    

    -------
    are site-specific and can only be opti-
    mized through continuous monitoring.
    
    Ideally, toe wnminii*iint source would
    be completely removed for proper aqui-
    vBf remediation usius wioiD—aud- treat
    technology. Unremoved contaminants
    will continue to dissolve into the ground
    water and prolong cleanup. It may be
    advantageous to have multiple extrac-
    tion welb pumping at a low rate rather
    than one at a high rale. Analytical and
    numerical modeling techniques can be
    used to evaluate alternative  designs,
    optimal well spacing*. pumping rates.
    and cleanup times.  Models can calcu-
    late ground-water flow paths,  locate
               plume fronts, and attempt
    1) Design an appropriate monitoring
       program to suit the pump-and-treat
       system.
    
    2) Actively monitor the system to
       verify that the remedial strategy is
       meeting die objectives and  that
       equipment is functioning properly.
    
    3) Modify the remedial strategy to ad-
       just tot unexpected contingencies.
       Specify alternate acceptable goals
       or change the remediation strategy
       to meet the original goals.
    to simulate contaminant transport.
    Proper design will ensure that wells are
    placed in the desired stratigraphic layer
    so  that the  correct area will be
     OPERATION AND
     MONITORING
    
     Once remedial action objectives are es-
     tablished and a system is built to meet
     these objectives, then a monitoring pro-
     gram should be designed to evaluate the
     success of me remedial system. Uncer-
     tainties in subsurface characterization
          monitoring a necessary step in
     pursuing aremedial strategy. Continual
     monitoring of the pump-and-treat sys-
     tem allows timely wytififati9nn to be
     made when it is clear that die system is
     not achieving prescribed goals.
    
     Monitoring yhgflld 
    -------
    Necessary modifications resulting from
    the monitoring results should be imple-
    mented.  Hie system design should be
    flexible enough to allow for easy adjust-
    ments to quicken cleanup. Keeping the
    possibility of modifications in mind when
    constructing the pump-and-txeat system
    will promote the speed and efficiency of
    remediation.
    
    The pump-and-treat system is terminated
    when the cleanup objectives are met
    Monitoring is needed to ensure that des-
    orption or dissolution of residuals does
    not cause an increase in the level of con-
    tamination after operation of the pump-
    and-treat system has ceased. Post-opera-
    tional monitoring may be required for two
    to five yean after termination depending
    onsiteconditions. Calculatingthedeanup
    period for a site is necessary to estimate
    termination time and potential length of
    post-operational monitoring (Seeexample
    on this page).
    
    LIMITATIONS OF PUMP-AND-
    TREAT TECHNOLOGY
    
    Reducing ground-water concentrations to
    standards required by the Safe Drinking
    Water Act or Land Disposal Restriction is
    difficult n**ng  available technology for
    many contaminants.  There are several
    inherent limitations *Nit hjpAy effective
    pump-and-treat site remediation.  These
    include the potentially long time neces-
    sary 10 achieve the remediation goal; sys-
    tem designs failing to contain the con-
    taminant as predicted, allowing the plume
    to migrate; and failure of surface equip-
    ment.
    Research has
                            other limin-
    tions with the use of pump-and-treat tech-
    nology. These limitations include con-
    taminant residual MiBrmJfii chemical
    sorption of the contaminant, an^ low hy-
    draulic conductivity causing tailing ef-
    fects.
    1. *f f ffrf fni^ fg
    The presence of nonaqueous phase liquids
    greatly complicates contaminant behav-
    ior. Movement of contaminants in a sepa-
    rate, immiscible phase is not well under-
    stood either in saturated or unsaturated
                                                      1.0
                                                          | THKOMTICM. REMOVAL (
                                                                               1
                                                                             TIME
                                                                Effects of tailing on pumping time
                                          zones. A less soluble contaminant moves in
                                          response to pressure gradients and gravity
                                          and is influenced by interracial tension,
                                          volatilization, and dissolution.
    
                                          Residual saturation or irreducible satura-
                                          tion is the limit of drainage, where a certain
                                          pore volume will always remain. Both the
                                          type of immiscible fluid involved and the
                                          pen size distribution of the material deter-
                                          mine the extent of residual saturation. Re-
                                          sidual saturation reduces the overall amount
                                          of contaminant that  enters  and migrates
                                          within the saturated zone and acts as a
                                          source of long-term miscible contaminant
    
                                          Additional datarequired to determine proper
                                          remediation strategies for NAFLs include
                                         fluid specific gravity, viscosity, and con-
                                         taminant thickness and distribution. Sub-
                                         stances that are particularly difficult to
                                         remediate are halogenated aliphatic hy-
                                         drocarbons,  halogenated benzenes,
                                         phthalate ethers, and polvchlorinated bi-
                                         phenyls. Dataonrelativepermeabilityare
                                         readily available for many petroleum ap-
                                         plications, butnot for liquids usually found
                                         at hazardous waste sites.
    
                                         2. Sorted chtmicals
    
                                         Mobile, non-reactive compounds are most
                                         effectively treated using pump-and-treat
                                         technology. Contaminant^ easily sorbed
                                         onto the soil matrix are more difficult to
                                         remediate effectively.  The volume  of
                                                  AN EXAMPLE OF CALCULATING CLEANUP TIMES
                                                               ,
                                                   qiB^                                     acittgtta aquifer i»
                                             perrae*bfeand55feettr^
                                                                                            Xtodennese conditions
                              ^
    
                                 , *, /.^^SsfcV. .•*--..
                                                                 .10«crwi43i5Wrr»/»cr.x»ft.i7^»g«i/n»j(U1
    
                                                                              ~-tS"^:   >,   '
                                                                                  '*  \  "* S / "•" %          »•
    < year to completely"
    . observed when usmg o
                                             decrease^contamiriamc
                                                                    trusv^                                 days/
    
                                                                       *tiff contaminant doe to ttof tailing effect often
    
                                          ;:  andmooilecontaimnamthatmigrate
    
                                                   able zone* of me geologic
                          mping time an
                     ediation,
                                                                                          nqptinit,. Sites with tailing
                                                                                gyeafay pff"Tpfffg '"^"TT'^f 


    -------
    pumped water required to remove the con-
    taminant depends on the sorption capac-
    ity, the geologic material through which it
    flows, and the ground-water flow velocity
    during remediation.
    
    If the ground-water flow velocity induced
    by pumping is too rapid, the contaminant
    concentration levels will not reach equi-
    librium.  This results in decreased effi-
    ciency of contaminant removal (See dia-
    gram on toe right). The retardation factor
    of a chemical (contaminant velocity rela-
    tive to the water velocity) can be deter-
    mined to estimate potential sorption ca-
    pacity and remediation time.
    
    3. Hydraulic conductivity
    
    Hydraulic conductivity is another factor
    influencing the effectiveness of pump-
    and-treat remediation. Favorable condi-
    tions for pump-and-treat activities are high
    hydraulic conductivity—greater than 10°
    cm/sec—and homogeneity  of me sur-
    rounding aquifer material.  Determining
    pump-and-treat feasibility is specific to a
    site. Thesame range of hydraulic conduc-
    tivities may allow a pump-and-treat sys-
    tem to be applied at one site but not at
    another depending on physical site char-
    acteristics and chemical properties of the
    contaminant
    
    These limitations are not insurmountable
    if accurate  data collection and  careful
    planning are employed when designing
    and operating a pump-and-treat system.
                                                                                      AOVCCTION •
                                              QROUNOWATEft VELOCITY -»
                                            Liquid partitioning limitations of
                                            pump-and-treat effectiveness
                                            (Ksely, 1989).
        Suoofund Ground Water Issue*
        EPA/54Q/4-89/005.Cinciniuuit
                                         t?<:  -; v. References  •    ,,
                                          ^ ••   "" >   'f--.   ^^      ' K; '* .   s   f'
                                         tXS,lo»*oimie«aiProtectk» Agency^
                                                    RCRA ground- water moai-
         I984av Casestadies I-25:R«ne*
         dial response at hazardous waste -
         WashisgtQn; D.C.
    
     UJS.Enwronmental;Protectioa Agency,.
         !986b, Superfundpnblic health
                oB manual, EFA/54. .-;;,. •  .
                                                                                        ironwiental-Proteciion Agency,
                                                                                    J988b» Guidance for conducting
                                                                                    inft
        natf,Qiiio,        ••     -  / v>
    
    U.&EnviroiHnejml Protect
        I984b. Snramaiy report: Remedial
                          .. waste siteSj*.-!:;!;:
                               •f^ /-.•%•>
                   sntal Protection Agency,
                                                                                    feasibiIitystndi»underCERCLA.
                                                                                    OSWER- 93553-01, Washington,
                                                                                                   '
                                             "gies used m the treatment of hazard-
                                              oua wastes* EPA/625/8-87/014*
        Ohio.    %       v%v^'vi, ,;,   >/V"  %     	           . •'
    •;,;.;.;.;••       > \  •. -  ^^Vrt^v^ •. >.• y -.XI4t>EnvironmentalPiutection Agency^
    U^.EnviromTKntal Protection Agency,        1987b. Handbook: Ground Water,
         1985. Modeling remedial »ctio« at  ':
                                               . Environmental Protection Agency,
                                                1988c. Ground-water modeling: an
                                                overview and status report. EPA/
                                                6WV2-89/028, Cincinnati, Ohio.
         uncontrolfed hazardous waste
         EPA/
         Ohio.
     U^. Environmental Protection Agency,
         I987b» MINTEQAli an equilibrium
         metal speciation model: user's
         manual, EPA/60(V3-87A)12, Athens;,
         Georgia.
                                                                                U.S. EnvironmentalProtectkm Agency,
                                                              Cincinnati,. Ohio»  '    1989. Evaluation of ground- water
                                                                                  .„' esctraction remedies, Vols. 1 and 2
                                                                                    OSWER, Washington, D.C.
            To obtain the Basics of Pump-tad Tr*atGround-WattrR«m*dlation Ttchnolagy caO or write toe Center for
              Environmental Research Information; Cincinnati, Ohio 45268. Ask for publication EPA/600/8-90/003.
    
    
                                                          10-39
    

    -------
    10.16         KEY REFERENCE LIST - GROUNDWATER
    
    
    Karlsson, H. and Ditto, R.  New Horizontal Wellbore system for Monitor and Remedial Wells
           from Proceedings of llth National HMCRI Superfund '90 Conference, November 26-28,
           1990.
    
    Langseth, David.  Hydraulic Performance of Horizontal Wells, from proceedings of 11 th National
           HMCRI Superfund '90 Conference, November 26-28, 1990.
    
    Newton, J., 1990. Groundwater Recovery and Treatment. Pollution Engineering, v. 22, n. 12,
           p.99-101.  Contains a general description of groundwater recovery and treatment
           techniques.
    
    Nyer, E.K., 1985. Groundwater Treatment Technology.  Van Nostrand Reinhold, New York,
           NY, 188 pages. Provides a thorough discussion of treatment technologies for extracted
           ground water.
    
    Patel, Y.B., Shah, M.K., and Cheremisinof, P.N., 1990. Methods of site remediation.  Pollution
           Engineering, v. 22, n. 12, p.  58-66. Addresses site remediation through the combination
           of new techniques with traditional technologies.
    
    U.S. Environmental Protection Agency, 1989.  Applications Analysis Report - Ultrox
           International Ultraviolet Ozone Treatment for Liquids, San Jose, CA, EPA/540/A5-
           89/012.
    
    U.S. Environmental Protection Agency, 1990.  Basics of Pump-and-Treat Ground Water
           Remediation Technology, EPA/600/8-90/003.
    
    U.S. Environmental Protection Agency, 1989.  Biorestoration of Aquifers Contaminated with
           Organic Compounds, NTIS PB89-103527 (available from EPA, Ada, OK)
    
    U.S. Environmental Protection Agency, 1990.  Emerging Technology Report - Removal and
           Recovery of Metal Ions from Ground Water, EPA/540/5-90/005a (Evaluation Report,
           EPA/540/5-90/005b (Data and Supporting Information)).
    
    U.S. Environmental Protection Agency, 1988.  Guidance on Remedial Actions for Contaminated
           Ground Water at Superfund Sites; EPA/540/G-88/003.
    
    U.S. Environmental Protection Agency, 1990.  Handbook:  Ground Water, Volume 1: Ground
           water and contamination. USEPA Center for Environmental Research Information,
           Cincinnati, OH, EPA/625/6-90/016a, 144 p.  Contains discussions of site investigations
           leading to aquifer restoration techniques.
    
    U.S. Environmental Protection Agency, 1989.  In-Situ Aquifer Restoration of Chlorinated
           Aliphatics by Methanotrophic Bacteria; EPA/600/2-89/033 (Available from EPA, Ada,
           OK).
    
    U.S. Environmental Protection Agency, 1988. Opportunities for Bioreclamation of Aquifers
           Contaminated with Petroleum Hydrocarbons, NTIS PB88-148150 (Available from EPA,
           Ada, OK).
    
    U.S. Environmental Protection Agency, 1989.  Performance Evaluations of Pump-and-Treat
           Remediations (Issue Paper), EPA/540/4-89/005 (Available from EPA, Ada, OK)
                                             10-40
    

    -------
                               TABLE OF CONTENTS
    
    Section                                                               Page
    
    
    11.0 APPENDICES  	   11-1
    
                            SITE PROGRAM DOCUMENTS
    
          11.1   SUPERFUND INNOVATIVE TECHNOLOGY EVALUATION
               PROGRAM FACT SHEET	  11-2
    
          11.2   SUPERFUND INNOVATIVE TECHNOLOGY EVALUATION:  SOLUTIONS -
               SERVICE - SUPPORT	  11-6
    
          11.3   COMPLETED SITE DEMONSTRATIONS	  11-12
    
          11.4   SITE DEMONSTRATION PROGRAM PARTICIPANTS 	  11-16
    
          11.5   ORDER FORM FOR SITE PROGRAM DOCUMENTS	  11-22
    
          INFORMATION SOURCES ON INNOVATIVE TREATMENT TECHNOLOGIES
    
          11.6   FURTHERING THE USE OF INNOVATIVE TREATMENT TECHNOLOGIES
               IN OSWER PROGRAMS  	  11-23
    
          11.7   MARKET ASSESSMENT FOR INNOVATIVE TREATMENT
               TECHNOLOGIES  	  11-27
    
          11.8   TREATABILITY STUDIES  	  11-28
    
          11.9   TECHNICAL SUPPORT SERVICES FOR SUPERFUND SITE
               REMEDIATION  	  11 -29
    
               DATA BASES ON INNOVATIVE TREATMENT TECHNOLOGIES
    
          11.10  TREATMENT VENDOR DIRECTORY 	  11-30
    
          11.11  DEVELOPMENT OF AN ALTERNATIVE TREATMENT
               TECHNOLOGY DATA BASE AND INFORMATION CENTER 	  11-31
    
                            ADDITIONAL  INFORMATION
    
          11.12  TECHNOLOGICAL INNOVATION IN HAZARDOUS WASTE
               REMEDIATION  	  11-34
    
          11.13  EXAMPLES OF CONSTITUENTS WITHIN WASTE GROUPS	  11-36
    
          11.14  SELECTING INNOVATIVE TREATMENT TECHNOLOGIES:  A
               PRACTITIONER'S GUIDE  	  11-39
    
          11.15  SURVEY OF MATERIALS - HANDLING TECHNOLOGIES USED AT
               HAZARDOUS WASTE SITES	   11-43
    
          11.16  INNOVATIVE TREATMENT TECHNOLOGIES:  SEMI-ANNUAL STATUS
               REPORT-SUMMARY STATISTICS	  11-44
    

    -------
    11.0 APPENDICES
         11-1
    

    -------
          11.1
    SUPERFUND INNOVATIVE TECHNOLOGY EVALUATION PROGRAM FACT
                       SHEET
                                United States
                                Envtromnontal Protection
                                Agency
                                  Office of Solid
                                  Waste and Emergency
                                  Response
    Office of
    Research and
    Development
    B380.1-03AFS
    May 1991
    vvEPA
             Superfund  Innovative
             Technology  Evaluation
             Program
             SITE  Program  Fact  Sheet
    SITE PROGRAM OVERVIEW
    
        The Superfund Innovative Technology Evaluation (SITE)
    program supports development of technologies for assessing and
    treating waste from Superfund sites. The SITE program was
    authorized by the Superfund Amendments and Reauthorization
    Act of 1986 with the goal of identifying technologies, other than
    land disposal, that are suitable for treating Superfund wastes. The
    program provides an opportunity for technology developers to
    demonstrate their technologies' capability to successfully proc-
    ess and remediate Superfund waste. EPA evaluates the technol-
    ogy and provides an assessment of potential for future use for
    Superfund cleanup actions.  The SITE program has currently
    evaluated and/or supported RD and D efforts for more than 100
    innovative treatment technologies. The SITE program is admini-
    stered by EPA's Risk Reduction Engineering Laboratory (RREL)
    in Cincinnati, Ohio.
    
        This fact sheet describes the four components of the Slit
    Program with particular emphasis on the Demonstration Pro-
    gram, which conducts evaluation demonstrations of operating
    alternative technologies. This page of the fact sheet summarizes
    the overall Silt Program. Subsequent pages provide additional
    detail about each program component.  This fact sheet also
    contains a list of contacts for further information, and an order
    form for technology transfer publications and videos.
    
    COMPONENTS OF THE SITE PROGRAM
    
        The SITE program integrates four related components, the
    Demonstration Program, the Emerging Technologies Program,
    the Measurement and Monitoring Technologies Program, and the
    Technology Transfer  Program.
    
    DEMONSTRATION PROGRAM
    
        The Demonstration Program provides engineering, cost,
    reliability, and applicability data on new Superfund remediation
    technologies by sponsoring field demonstrations of pilot or full-
    scale technologies. Technology developers demonstrate their
    methods on selected wastes, and EPA analyzes, evaluates and
    disseminates the test results. Typically, no funding is made
    available to the developer during this process. Figure 1 illustrates
    the categories of technologies currently enrolled in the Demon-
    stration Program.
    
        Innovative Technologies Program
    
        This supplement to the Demonstration Program was estab-
    lished to encourage private sector development and commerciali-
    zation of EPA-developed hazardous waste treatment technolo-
                                             Currant Program Technology Mix
                                                   56 Technologies
                                     Physical/Chemical
                                        48% (27)
                                                  Thermal  13%  (7)
            Biological Technologies
                 21% (12)  .
    
                   Radionucfldes
                                                                    Solidification
                                                                      16% (9)
                                                        Figure 1
    
                                    gies for use at Superfund sites. The Federal Technology Transfer
                                    Act of 1986 authorized the EPA/industry partnership that is
                                    necessary to bring these technologies to commercialization. This
                                    will enable EPA laboratories to collaborate with industry, thus
                                    facilitating development of the technologies and reducing the
                                    market risk.
    
                                    EMERGING TECHNOLOGIES PROGRAM
    
                                         The Emerging Technologies Program (ETP) supports the
                                    development of new, innovative technologies by following
                                    laboratory and bench-scale technologies through pilot-scale test-
                                    ing. The ETP provides up to two years of financial assistance to
                                    private developers for technology research and development
                                    through cooperative agreements.
    
                                    MEASUREMENT AND MONITORING
                                    TECHNOLOGIES PROGRAM
    
                                         The Measurement and Monitoring Technologies Program
                                    (MMTP) is designed to improve the accuracy of Superfund site
                                    characterization efforts. The MMTP tests the ability of advanced
                                    technologies to assess the nature and extent of contamination, and
                                    evaluate cleanup levels. Funding is generally not provided to
                                    developers under this program.
    
                                    TECHNOLOGY TRANSFER
    
                                         The Technology Transfer portion of the SITE program
                                    disseminates information from the other three programs to in-
                                    crease awareness and use of alternative technologies for assess-
                                    ing and remediating Superfund sites. Technology transfer occurs
                                    through reports, brochures, videos, seminars, public meetings
                                    and site visits, conference exhibits, and technical support to EPA
                                    Regions, Stales, and Superfund contractors.
                                                  11-2
    

    -------
                                          SITE Demonstration Program Process
           Select
        Technology
    •H
        Match
    Technologies
      with Sites
                                                           Prepare
                                                       Demonstration
                                                            Plan
                                                    Conduct Community
                                                          Relations
                                                          Activities
       Conduct
    Demonstration
    i
    Technology
      Transfer
                                                            Figure 2
    DEMONSTRATION PROGRAM PROCESS
          The Demonstration Program  selects technologies and
    conducts field demonstrations through the process illustrated in
    Figure 2. Each step in the process is discussed below.
    
          Select Technologies: In January of each year EPA solicits
    applications for the demonstration program. Developers submit
    proposals which are reviewed and accepted by EPA.
    
          Match Technologies with Site: EPA and the developer
    select a site for the demonstration based on several considera-
    tions: the developer's waste and location preferences, relevance
    of the technology to the site cleanup, and Regional needs. EPA
    meets with Regional and State representatives, the developer and
    other interested parties to visit sites prior to making a final
    selection.
    
          Prepare Demonstration Plan:  EPA develops a Demon-
    stration Plan that details how to sample waste for testing, prepare
    the selected site for the demonstration, dispose  of residual
    materials, and evaluate the technology in the field. Both EPA and
    the technology developer must approve the Demonstration Plan.
    
          Conduct Community Relations Activities: In most cases,
    opportunity for public comment is required prior to the actual
    demonstration. EPA prepares fact sheets on the demonstration,
    designates a period for the public to comment, and may hold local
    public meetings and/or land site visits.
    
          Conduct Demonstrations: The demonstration of the se-
    lected technology can last from a few days to several months. The
    technology developer is financially responsible for mobilizing
    and operating the technology. EPA prepares the site, provides
    utilities, collects  samples, performs  QA field and laboratory
    audits, and evaluates the results. EPA also handles the logistical
    arrangements for a Visitor's Day where the Regional and State
    officials, the public and interested professionals are invited to
    view the demonstration.
                                                         Conduct Technology Transfer: After the demonstration,
                                                    EPA prepares an Applications Analysis Report that assesses the
                                                    overall applicability of the technology to other sites and wastes,
                                                    and includes technology cost, performance, and reliability infor-
                                                    mation.  In addition, EPA prepares a Technology Evaluation
                                                    Report which  presents a summary of  the demonstration and
                                                    evaluation results. Contact John Martin  at 513-569-7758 for
                                                    further information.
    
                                                         Innovative Technologies Program
                                                     EPA Labs/Industry
                                                         Partnerships
                                                         in R4D
                                                               Through cooperative research and devel-
                                                               opment agreements (CRDAs), EPA labo-
                                                               ratories will work closely with industry
                                                               to develop and commercialize on-site de-
                                                               struction and hazardous  waste cleanup
                                                               technologies.  Through the program, EPA
                                                               is involved in the development of a vari-
                                          ety of technologies. Examples include:
    
                                          Q    Mobile Debris Washer;
    
                                          Q    Base Catalytic Destruction System (BCD -APEG-KPEG);
    
                                          Q    Volume Reduction Unit (VRU); and
    
                                          Q    Excavation Technique and Foam Suppression Methods.
    
                                                For further information on this program, contact Steve
                                          James at (513) 569-7877.
                                                    EMERGING TECHNOLOGIES
                                                    PROGRAM (ETP) HIGHLIGHTS
    
                                                                       The Emerging Technologies Program is
                                                                  supporting 30  technologies and  is currently
                                                                  planning to fund 13 projects from the 1990 so-
                                                                  licitation. Solicitation for preproposals occurs
                                                                  in July of each year, the selected developers are
                                                    then invited to submit a Cooperative Agreement Application for
                                                    review. Final selection of projects is made in March of each year.
                                                             11-3
    

    -------
    This is a co-funding effort between the developer and EPA. with
    EPA funding up to $150,000 each year. Funding for the second
    year is determined by the progress of the first year's research.
    Funding support for the program has also been received from the
    Department of Energy,  and the Department of Defense (Air
    Force).
    
            Several projects completed from the first year solicita-
    tion are being invited into the Demonstration Program. Program
    emphasis is being placed on innovative processes, that may be •
    capable of field scale efforts in the second year of research. This
    provides a stronger basis for moving into the Demonstration
    Program.  Contact Norma Lewis at  513/569-7758  for further
    information.
    MEASUREMENT AND MONITORING
    TECHNOLOGIES PROGRAM OBJECTIVES
    
          The Measurement and Monitoring Technologies Program,
    based at EPA's Environmental Monitoring System Laboratory in
    Las Vegas, Nevada, sponsors research on advanced Superfund
    site assessment technologies. MMTP objectives include:
    
    Q    Identifying existing technologies that can enhance field
         monitoring and site characterization;
    
    Q    Supporting development of monitoring capabilities that
         cannot  be  cost-effectively  addressed  with  current
         technology;
    
    Q    Demonstrating those technologies that emerge from the
         screening and development phases of the program; and
    
    Q    Preparing  protocols, guidelines and standard operating
         procedures for new methods.
    
          For further information on MMTP, please contact Eric
    Koglin, FTS 545-2432 or (702) 798-2432.
    TECHNOLOGY TRANSFER ACTIVITIES
    
                          Technical information gathered through
                          all of the SITE programs is exchanged
                          through a variety of activities. Data
                          results and status updates are dissemi-
                          nated to increase awareness of alterna-
                          tive technologies available for use at
                          Superfund sites. A wide array of media
                          are utilized to reach decision makers
                          involved in Superfund sites including:
    
    Q    SITE brochures, publications, reports, videos and fact
         sheets;
    
    Q    Pro-proposal conferences on SITE solicitations;
    
    Q    Public meetings and on-site visitors' days;
    
    Q    Seminar series;
    
    Q    SITE exhibit displayed at nationwide conferences;
    
    Q    Innovative technologies program exhibition;
    
    Q    Networking  through forums, professional associations,
         centers of excellence, regions, and states; and
    
    Q    Journal  articles.
          Alternative Treatment Technology Information
          Center (ATTIC)
    
                        The Alternative Treatment Technology
                        Information Center (ATTIC) is an infor-
                        mation retrieval network that can provide
                        up-to-date technical information on inno-
                        vative treatment methods for hazardous
                        wastes. Information available through the
    ATTIC database includes abstracts and executive summaries
    from over 1200 technical documents and reports. These abstracts
    and summaries, delineated by technology, are categorized into
    five groups: (1) Thermal Treatment; (2) Biological Treatment;
    (3) Solidification/Stabilization Processes; (4) Chemical Treat-
    ment; and (5) Physical Treatment The Attic Database provides
    the user with access  to innovative technology  demonstration
    studies, a variety of treatability, cost analysis models, migration
    and sampling databases, underground storage tank case histories
    and remediation ideas. The ATTIC network can also enable
    access to expert assistance, a calender of events, and a list of
    publications.
    
          ATTIC can be accessed through an online system, a system
    operator or through a disk-based version.  For assistance and/or
    information call the ATTIC operator at 301-816-9135.
    SITE PROGRAM CONTACTS
    OBTVRBF1. rontactt?
    Demo
    Program
    REGION
    1
    2
    3
    4
    5 ,
    OSWER
    /no
    John Martin Emerging
    FTS 684-7758 Program
    513-569-7758
    Rpgtnnal Contact*?
    NAME
    Diana King
    FTS 833-1676
    617-573-9676
    Peter Mo»i
    FTS 264-4703
    212-264-4703
    Paul Leonard
    FTS 597-8485
    215-597-8485
    John Rlsher
    FTS 347-1586
    404-347-1586
    Sieve Oitrodka
    FTS 886-301 1
    312-886-3011
    Headqu
    John Quander
    FTS 398-8845
    703-308-8845
    REGION
    6
    7
    8
    9
    10
    ORD/
    'OEETTJ
    Norma Lewis
    FTS 684-7665
    513-569-7665
    NAME
    Don Williams
    FTS 255-2197
    214-655-2197
    DanaTrugley
    FTS 276-7705
    913-551-7705
    Gerald Snyder
    FTS 330-7504
    303-294-7405
    John Blevin*
    FTS 484-2241
    415-744-2241
    John Barich
    FTS 399-8562
    206-533-8562
    RidiardNaJesnik
    FTS 382-2583
    202-382-2583
    SITE DEMONSTRATION PROGRAM
    ACCOMPLISHMENTS
    
            The Agency has successfully completed 20 field tech-
    nology demonstrations at Superfund sites as indicated in Table 1.
    In addition, four measurement and monitoring technologies have
    been field demonstrated. SITE project results may be obtained by
    contacting the EPA Center for Environmental Research Informa-
    tion (CERI) at (513) 569-7562 or FTS 684-7562.
                                                            11-4
    

    -------
                             TabUl
               Completed Field Demonstrations
    REGION SITE/
    DEVELOPER
    I Groveland Wells,
    MA; Terra Vac.
    Inc.
    n New Bedford Harbor.
    MA; CF Systems
    Corp.
    Imperial Oil. NJ;
    Soliditech, Inc.
    m Donglassville,PA;
    Hazcon. Inc.
    (IM-TECH)
    Pabnenon, PA;
    El. DuPont
    DeNemoun A Co.
    Monica. PA:
    Honehead Resource
    Development Co.
    IVG.E.Hialeah,FL;
    International Waste
    Technology
    Peak Oil, FUShirco
    Infrared System, Inc.
    DESCRIPTION
    In-Situ vacuum
    extraction of
    VOCsinsoil
    Solvent Extraction to
    Remove PCBi from
    sediments
    Solidification/
    stabilzation of heavy
    metals and organics
    Solidification/
    stabilization of volatile
    and semi-volatiles,
    organics, PCBs, arid
    heavy metals
    Membrane
    Microfiltration
    Flame Reactor
    In-situ solidification of
    PCBs
    Transportable IR
    thermal processing
    systems for treatment
    of PCBs, organics, lead,
    and other metals in soil
    and sludge material
    Risk Reduction Debris Washing System
    Engineering Lab,
    Cincinnati, OH
    (Kentucky and Georgia locations)
    V Rote Township, MI;
    ShircoIR Systems,
    Inc.
    McGillis&Gibbs.
    MN; Biotrol
    McGillis&Gibbs,
    MN; Biotrol
    VI EPA's Combustion
    Research Facility,
    AR; American
    Combustion
    Technologies, Inc.
    DC Lorentz Barrel and
    Drum, CA; Ultrox
    International, Inc.
    McCollSite
    Fullerton, CA;
    Excavation Techniques
    Lockheed Site
    Burbank, CA; AWD
    Technologies, Inc.
    McColl Site, CA;
    Ogden Environmental
    Services
    Infrared Incinerator
    System
    Soil washing
    Biotreatment of
    groundwater
    Pyretron oxygen and
    aubumer for use with a
    rotary kiln
    incinerator
    UV/ozonc oxidation of
    orgaincs in groundwater
    Excavation & Foam
    Suppression of Volatile!
    Integrated In-Situ Vapor
    Extraction & Steam
    Vacuum Stripping
    Process
    Circulating fluidized
    bed combustor
    PROJECT
    MANAGER
    Mary Stinson
    FTS: 340-6683
    201-321-6683
    Laurel Staley
    FTS: 684-7863
    513-569-7863
    Walter Grobe
    FTS: 684-7798
    513-569-7798
    PauldePercin
    FTS: 684-7797
    513-569-7797
    John Martin
    FTS: 684-7758
    513-569-7758
    Donald Oberacker
    FTS: 684-7510
    513-569-7510
    Mary Stinson
    FTS: 340-6683
    201-321-6683
    Howard Wall
    FTS: 684-7691
    513-569-7691
    Naomi Barkley
    FTS: 684-7854
    513-569-7854
    Howard Wall
    FTS: 684-7691
    513-569-7691
    Mary Stinson
    FTS: 340-6683
    201-321-6683
    Mary Stinson
    FTS: 340-6683
    201-321-6683
    Laurel Staley
    FTS: 684-7863
    513-569-7863
    Norma Lewis
    FTS: 684-7665
    513-569-7665
    Jack Hubbard
    FTS: 684-7507
    513-569-7507
    Gordon Evani
    FTS: 684-7684
    Douglas Grosse
    FTS: 684-7844
    513-569-7844
       Annex Terminal, San
       Pedro, CA; Toxic
       Treatment!, Inc.
    In-situ steam -
    aintripping of volatile
    organics in soil
    Paul DePercin
    FTS: 684-7797
    513-569-7797
       Selma Site, Fresno,    Silicate Compounds by  Edward Bates
       CA; Silicate         Solidification/         FTS: 684-7774
       Technology Corp.     Stabilization          513-569-7774
    X  Portable Equipment
       Company, OR;
       Chemfix
       Technologies, Inc.
    Chemical fixation/
    stabilization of organics
    and inorganics in
    waste slurries
    EdBaith
    FTS: 684-7669
    513-569-7669
                                               SITE PROGRAM DOCUMENTS
    
                                                    The following SITE demonstration project publications
                                               are available from EPA.  Indicate your choice by checking the
                                               appropriate box(es) on the order form below. The form may be
                                               copied.*
                                               General Publications
                                                 D Technology Profiles (EPA/540/5-90/006)
                                               Project Results
                                               American Combustion - Oxygen Enhanced Incineration
                                                 D Technology Evaluation (EPA/540/5-89/008)
                                                 D Applications Analysis (EPA/540/A5-89/008)
                                               CF Systems Corp. - Solvent Extraction
                                                 D Technology Evaluation (EPA/S40/5-90/002)
                                                 D Applications Analysis (EPA/540/A5-90/002)
                                               Chemfix Technologies, Inc. - Chemical Fixation/Stabilization
                                                 D Technology Evaluation (EPA/540/5-89/011)
                                                 D Applications Analysis (EPA/540/A5-89/011)
                                               Hazcon - Solidification
                                                 D Technology Evaluation (EPA/540/5-89/001a)
                                                 D Applications Analysis (EPA/540/A5-89/001)
                                               IWT In-Situ Stabilization
                                                 D Technology Evaluation (EPA/540/5 -89/004a)
                                                 D Applications Analysis (EPA/540/A5-89/004)
                                               Shirco-Infrared Incineration
                                                 H Technology Evaluation - Peak Oil (EPA/540/5-88/002a)
                                                 Q Technology Evaluation - Rose Township (EPA/540/5-89/
                                                    007a)
                                                 O Applications Analysis (EPA/540/A5-89/007)
                                               Soliditech, Inc. - Solidification
                                                 D Technology Evaluation (EPA/540/5-89/005a)
                                                 D Applications Analysis (EPA/540/A5-90/005)
                                               Terra Vac - Vacuum Extraction
                                                 D Technology Evaluation (EPA/540/5-89/003a)
                                                 a Applications Analysis (EPA/540/A5-89/003)
                                               Ultrox International -  Ultraviolet Ozone Treatment for Liquids
                                                 D Technology Evaluation (EPA/540/5-89/012)
                                                 D Applications Analysis (EPA/540/A5-89/012)
    
                                                 Q Check here if you would like your name placed on the Silt
                                                    mailing list
                                                         Your Name and Mailing Address (please print)
    MAIL TO:        ORD Publications
                     26 W. Martin Luther King Drive (G72),
                     Cincinnati, Ohio 45268
    
    *   Documents ordered through ORD Publications are free of
        charge.
    
    SITE VIDEOCASSETTES
    
          Silt Program videos are also available on selected sites
    for a small fee. These videos contain footage of actual field dem-
    onstration activities, including Visitor Day programs. For further
    information contact Marilyn Avery, Foster Wheeler Envire-
    sponse. Inc., 8 Peach Tree Hill Rd., Livingston, N.J. 07039.
    Phone: 908-906-6860.
                                                            11-5
    

    -------
          11.2
    SUPERFUND INNOVATIVE TECHNOLOGY EVALUATION: SOLUTIONS
    SERVICE - SUPPORT
           Regional Needs
                                        Solutions - Service - Support
                                                          Remediation Problems  \
                                                            Removal Problems    /
    The SUPERFUND INNOVATIVE TECHNOLOGY EVALUATION (SITE) Program understands the problems associated
    with a cleanup activity and can provide solutions, service, and support for these problems. EPA's Risk Reduction
    Engineering Laboratory (RREL) developed this brochure to define the SITE Program capabilities and resources
    available to EPA's Regional Offices.
              THE SITE ADVANTAGES
    SITE, short for Superfund Innovative Technology
    Evaluation, is a unique, international program dedicated
    to promoting the development and commercialization
    of innovative treatment technologies for use at
    hazardous waste sites. The program involves
    evaluations with technology developers to determine
    the effectiveness of their innovative technologies.
    Effectiveness is judged in terms of performance
    objectives and costs.
    
    The Demonstration Program, one of four components
    in SITE, offers definite advantages to meet Regional
    needs.  The SITE Demonstration Program provides:
    
        •   Expert assistance to the Remedial Project
             Manager and On-Scene Coordinator (RPM
             and OSC) in judging the applicability of an
             innovative technology for a particular site
             waste
    
        •   A field demonstration, and/or a treatability
             study, that supports innovative technology
             selection in a Remedial Investigation/
             Feasibility Study (RI/FS)
    
        •   Cost sharing of a demonstration  or
             treatability study with the technology
             developer
    
        •   A technology test plan tailored to meet
             Regional information needs
    
        •   An evaluation of the technology's
             effectiveness and reliability, plus information
             for cost comparisons
    
        •   Overall assistance and resources for SITE
             community relations activities
    
        •   A responsive turn-around of cost and
             performance data for RPMs and  OSCs
                                            An option for planned waste removals
                                            requiring off-site treatment and evaluation
    
                                            EPA's Testing and Evaluation facility or a
                                            developer's facility that accepts wastes
                                            shipped off-site for destruction or treatment
                                            HOW SITE CAN HELP YOU
                                    With information . . .
    
                                    SITE recognizes that timely,  relevant information is
                                    imperative for RPMs and OSCs to evaluate and justify
                                    cleanup alternatives.  SITE'S advancement of
                                    innovative technologies is not only beneficial but is
                                    crucial to the future of the Superfund Program because
                                    it provides additional cleanup options.  Under SITE,
                                    many promising technologies are now being evaluated
                                    for destroying or reducing the toxicity, mobility, or
                                    volume of hazardous waste.
    
                                    With tailored demonstrations . . .
    
                                    SITE emphasizes flexibility-it will tailor demonstrations
                                    and treatability studies to accommodate Regional
                                    needs and time requirements.  SITE can generate
                                    useful data tailored to meet the RPMs and OSCs site-
                                    specific objectives. The Program can easily be
                                    integrated into the remedial process (Figure 1) or
                                    become a strategic part of a planned removal action.
                                    The earlier SITE is involved, the more support it can
                                    provide.
    
                                    With ongoing projects . . .
    
                                    A technology does  not need to be in the SITE Program
                                    to be evaluated under SITE.  Any innovative
                                    technology that the Region is planning or  using for a
                                    cleanup operation can be evaluated by the SITE
                                    Program. The Regions gain high quality,  credible data,
                                    with SITE responsible for the sampling, analysis, and
                                    evaluation.
    &EPA
                               11-6
                                                                Printed on Recycled Paper
    

    -------
             The SITE process can be incorporated at any stage in the Superfund process
            SITE PROCESS
       Waste/Site Characterization
       Site Screening
    SUPERFUND
     PROCESS
                                                 PA/SI
                                                  Rl
       Treatability Study
       Technology/Site Matching
       Community Relations/
        Permitting Assistance
       Technology Demonstration
        Planning - Phase 1
        Reid Demonstration - Phase 2
                                                  FS
                                                 ROD
       Data Information Feedback
       Long-term Monitoring
        (if applicable)
      RD/RA
           S/7E PRODUCTS
                            Treatability Study Test Plan
                            Treatability Study Data
                               and Report
                            Technology Fact Sheet
                            Technology Demonstration Plan
                            Site Preparation
                            Equipment Shakedown
                            Sampling/Analysis
                            Equipment Demobilization
    Early debriefing of laboratory results
    Publish demonstration bulletin
    Publish reports -
       Applications Analysis
       Technology Evaluation
    
    Follow-up Evaluation Report
    Technical/Cost-Effectiveness Study
       (when technology is
       selected for cleanup)
                              Figure 1. Conceptualization of SITE Integration Process
    Through solutions, service, and support. . .
    Solutions--SITE speeds up decision-making by
    providing additional data that can assist in evaluating
    and justifying remedies in the Record of Decision
    (ROD).
    
    Service-SITE evaluates demonstrations and treatability
    studies involving innovative treatment technologies.
               These evaluations provide focused, quality assured,
               site-specific cost and performance data.
    
               SITE also publishes and distributes technology
               evaluation results through technical reports, bulletins,
               summaries, and other technology transfer activities.
    
               Support-SITE provides the Regions with technical
               personnel in specific technology areas, and direct
               access to technical experts for problem-solving.
                                                   11-7
    

    -------
            REGIONAL  PARTICIPATION
    The success of the Superfund Program relies on a team
    approach.  Integration of all participants in the
    remediation process is essential to make innovative
    treatment technologies more available in the
    marketplace.
    
    SITE'S objective is to support the Regions by providing
    innovative treatment technology options for site
    remediation and removal activities.  Involvement in the
    SITE Program is a Regional decision, and the degree of
    personal participation is flexible.
    
    The SITE Program needs your support for matching
    innovative technologies with sites.  A combined effort
    between the Regions and the SITE Program will assist
    in identifying sites to host demonstrations. This can
    be accomplished in one of several ways.
         SITE publishes lists of innovative technologies
         needing a site match (see insert), and Regions
         nominate candidate sites.
    
         SITE supports ongoing (or planned) activities.
         RPMs and OSCs conduct or plan an innovative
         technology demonstration or field treatability
         study at their site and want SITE to evaluate the
         technology.  The SITE Program provides sampling
         and analytical support and overall technical
         assistance for the evaluation.
    
         Regions propose problem sites. In cooperation
         with the Superfund Technical Assistance
         Response Team (START), SITE provides solutions
         through annual solicitations  of innovative
         technologies and through direct contact with
         developers.
    With collective effort, the SITE Program will continue
    to expand and provide much needed data on innovative
    technologies.
    
    Regional knowledge of and accessibility to the SITE
    Program boost its potential.  To increase awareness
    and facilitate communication in the Regions, the RREL
    has established SITE contacts for each Region.
            SITE REGIONAL CONTACTS
                                                                  SITE Program
                                                                 Contact/Phone
                          SITE Regional Coordinator
                               Contact/Phone
    Kim Kreiton
    FTS 684-7328
    613/569-7328
    Ron Lewis
    FTS 684-7856
    513/569-7856
    Paul dePercin
    FTS/684-7797
    513/569-7797
    Teri Shearer
    FTS 684-7949
    513/569-7949
    Laurel Staley
    FTS 684-7863
    513/569-7863
    Randy Parker
    FTS 684-7271
    513/569-7271
    Doug Grosse
    FTS 684-7341
    513/569-7341
    Annette Gatchett
    FTS 684-7697
    513/569-7697
    Jack Hubbard
    FTS 684-7507
    513/569-7507
    Norma Lewis
    FTS 684-7665
    513/569-7665
                    Region 1
                    Region 2
                    Region 3
                    Region 4
                    Region 5
                    Region 6
                    Region 7
                    Region 8
                                                                                Region 9
                    Region 10
    Dana King
    FTS 835-1556
    617/573-1556
    Peter Moss
    FTS 264-4703
    212/264-4703
    Paul Leonard
    FTS 597-8485
    215/597-8485
    John Risher
    FTS 347-1586
    404/347-1586
    Steve Ostrodka
    FTS 886-3011
    312/886-3011
    Don Williams
    FTS 255-2197
    214/665-2197
    Dana Trugley
    FTS 276-7705
    913/551-7705
    Gerald Snyder
    FTS 330-7504
    303/294-7504
    John Blevins
    FTS 484-2241
    416/744-2241
    John Barich
    FTS 399-8562
    206/553-8562
                                                    11-8
    

    -------
                 ADDITIONAL SITE
            PROGRAM COMPONENTS
                                     Provides options that may be less expensive, more
                                     effective, and faster than current technologies for
                                     detecting contaminants at hazardous waste sites
    The advantages of the other SITE component programs
    are:
    
    The Emerging Technologies Program
    
    •  Provides a framework to support development of
        new, innovative technologies by tracking
        laboratory, bench- and pilot-scale technologies
        through the scale-up process
    
    •  Compares the waste applicability of particular
        technologies to Superfund site waste
        characteristics
    
    •  May produce promising technologies that can be
        evaluated in the field
    
    The Monitoring and Measurement
    Technologies Program
    
    •  Improves the accuracy of field characterization
    
    •  Provides RPMs and OSCs with a means to identify
        and demonstrate existing monitoring and
        measurement technologies
                                  The Technology Information Services
    
                                  •. Distributes quality data on innovative treatment
                                     technologies
    
                                  •  Establishes a public outreach and communication
                                     network that provides up-to-date technical
                                     information
    
                                  •  Addresses "bottom line" issues with performance
                                     and cost information
                                  RREL participates in an established network of
                                  technical assistance programs to support the Regions
                                  in their selection and evaluation of cleanup
                                  technologies. Vital programs in this network are SITE,
                                  START, and the Engineering Forum.  The activities in
                                  these programs complement each other; in fact, most
                                  START team leaders are also SITE project managers.
                                  Also, additional information on the application of
                                  innovative treatment technologies is accessible  through
                                  OSWER's Technology Innovation Office.
    4? EPA
    The SITE Program
    U.S. Environmental Protection Agency
    Risk Reduction Engineering Laboratory
    26 West Martin Luther King Drive
    Cincinnati, OH 45268
      INSIDE:   SITE Program Advantages
                                                 1 1.0
    

    -------
    ItCMMOuMT rVMIUflOH
                                                                                         &EPA
                     TECHNOLOGIES AVAILABLE FOR DEMONSTRATION
    The technologies listed below are available for demonstration at compatible sites.  To receive additional technology
    information, check the appropriate boxes below, then fold and mail this form (see  other side) to John Martin,
    RREL, in Cincinnati, Ohio.
                                                                                                SEND
                                                                                                INFO
    CONTAMINANTS
                                   WASTE MEDIA
                                                            DEVELOPER
                                                                                 TECHNOLOGY
    Volatile and nonvolatile
    hydrocarbons
    Pasticidei, oil, grease, heavy
    metals
    Cyanide, organic compound*
    Biodegradable organics
    Biodegradable organics
    Volatile and semivolatile
    organics, PCBs, pesticides
    Halogenated and nonhalogenated
    organics, pesticides
    Nonspecific organics, oily wastes
    Metals, semivolatile organics
    Acidic sludges with >5%
    hydrocarbons, low-level metals
    Heavy metals
    Petroleum sludge
    Biodegradable organics
    Please complete if you are
    Name
    Street
    Citv
    Zin
    Soil BioVersal USA, Inc.
    Sludge, wastewater, teachable EPOC Water, Inc.
    soil
    Groundwater, wastewatar, Exxon Chemical, Inc. /Rio Linda
    leachate Chemical Co.
    Soil, sludge In-Situ Fixation Co.
    Soil International Environmental
    Technology/YWC Midwest
    Soil, sludge, sediment Recycling Sciences International,
    Inc.
    Soil, sludge, liquid waste Remediation Technologies, Inc.
    Soil, sludge Resources Conservation Co.
    Soil S.M.W. Seiko, Inc.
    Sludge Separation and Recovery
    Systems, Inc.
    Aqueous solutions Techtran, Inc.
    Sludge Thermal Waste Management
    Groundwater, industrial Zimpro/Passavant, Inc.
    wastewater, leachate
    interested in receiving additional information on the above
    U.S. EPA Reaion
    
    State
    FTS:
    Please identify specific sites for evaluating the technologies listed above or for future
    BioGenesis process
    for extraction of
    hydrocarbons
    Precipitation and
    microfiltration, and
    sludge dewatering
    Chemical oxidation/
    cyanide destruction
    In-situ bioremediation
    Geolock/bio -drain
    treatment
    Low-temperature
    thermal desorption
    Liquid/solid contact
    digestion
    Solvent extraction
    (BEST process)
    In-situ solidification/
    stabilization
    Solidification/
    stabilization
    Chemical binding and
    physical separation
    Production of fossil
    fuel
    Powdered activated
    carbon and biological
    treatment (PACT)
    SITE technologies.
    
    
    
    
    technology evaluations.
    D
    D
    D
    D
    D
    D
    D
    D
    D
    D
    D
    D
    D
    
    
    
    
    
    
    
        Printed on Recycled Paper
                                                  11-10
                                                                                   January 1991
    

    -------
    &EPA
    The SITE Program
    Risk Reduction Engineering Laboratory
    U.S. Environmental Protection Agency
    26 West Martin Luther King Drive
    Cincinnati, OH 45268
                                            John Martin
                                            Chief, Demonstration Section
                                            Risk Reduction Engineering Laboratory
                                            U.S. Environmental Protection Agency
                                            26 West-Martin Luther King Drive
                                            Cincinnati, OH 45268
                                                   11-11
    

    -------
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    513-569-7665/
    513-569-7684
    
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    908-321-6683
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    513-569-7819
    FTS 684-7819
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    513-569-7863
    FTS 684-7863
    
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    513-569-7798
    FTS 684-7798
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    707-462-6522
    Michael Taylor
    513-782-4801
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    Scottsdale, AZ
    Soliditech, Inc.
    Houston, TX
    (002)
                      11-20
    

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    513-569-76
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    513-569-7
    FTS 684-7
    Mary Sli
    908-321-6
    FTS 340
    Paul dePercin
    513-569-7797
    FTS 684-7797
    
    Edward Bale*
    513-569-7774
    FTS 684-7774
    John Ma
    513-569-7
    FTS 684-
    echnology
    es Malol
    723-9171
                              s
    David Fletcher
    714-545-5557
    E Benjamin
    615-483-6515
    William Copa
    715-359-7211
    CO
    ology
    Chemical Binding/
    Precipitation and P
    Separation
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    from Petroleum-
    Sludges
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    Toxic Treatments' (
    San Francisco, CA
    Ullrox Internati
    Santa Ana, CA
                                           I
                           11-21
    

    -------
             11.5
      ORDER FORM FOR SITE PROGRAM DOCUMENTS
             EPA
               DOCUMENTS AVAILABLE FROM THE
    U.S. EPA RISK REDUCTION ENGINEERING LABORATORY
    SUPERFUND TECHNOLOGY DEMONSTRATION DIVISION
                            MARCH  1991
                  The following technical publications and SITE demonstration project results are available from EPA. Indicate your
                  choice by checking the appropriate box(es) on the order form below.*
                                 a
                                 a
                         General Publications
                  Technology Profiles (EPA/540/5-90/006)
                  SITE Program - FY89, Report to Congress (EPA/540/5-90/001)
                    Demonstration Project Results
    American Combustion - Oxygen Enhanced Incineration
       Q   Technology Evaluation (EPA/540/5-89/008)
       d   Applications Analysis (EPA/540/A5-89/008)
    CF Systems Corp. - Solvent Extraction
       D   Technology Evaluation (EPA/540/5-90/002)
       Q   Applications Analysis (EPA/540/A5-90/002)
    Chemfix Technologies, Inc. - Chemical Fixation/Stabilization
       Q   Technology Evaluation (EPA/540/5-89/011)
       a   Applications Analysis (EPA/540/A5-89/011)
    Hazcon - Solidification
       O   Technology Evaluation (EPA/540/5-89/001 a)
       Q   Applications Analysis (EPA/540/A5-89/001)
    IWT In-Situ Stabilization
       Q   Technology Evaluation (EPA/540/5-89/004a)
       Q   Applications Analysis (EPA/540/A5-89/004)
                                       Shirco-lnfrared Incineration
                                          D Technology Evaluation - Peake Oil (EPA/540/5-88/002a)
                                          Q Technology Evaluation - Rose Township
                                                  (EPA/540/5-89/007a)
                                          Q Applications Analysis (EPA/540/A5-89/007)
                                       Soliditech, Inc. - Solidification
                                          D Technology Evaluation (EPA/540/5-89/005a)
                                          D Applications Analysis (EPA/540/A5-90/005)
                                       Terra Vac - Vacuum Extraction
                                          D Technology Evaluation (EPA/540/5-89/003a)
                                          D Applications Analysis (EPA/540/A5-89/003)
                                       Ultrox International - Ultraviolet Ozone Treatment for Liquids
                                          Q Technology Evaluation (EPA/540/5-89/012)
                                          O Applications Analysis (EPA/540/A5-89/012)
                                            Emerging Program Reports
    Bio-Recovery Systems Removal and Recovery of Metal Ions
       from Groundwater
            d   EPA/540/5-90/005a
    Development of Electro-Acoustic Soil Decontamination
       (ESDJ Process for In Situ Applications
            Q   EPA/540/5-90/004
                                        Removal and Recovery of Metal Ions from Groundwater
                                              D  EPA/540/5-90/005
                    Q   Check here if you would like your name placed on the SITE mailing list
           Your Name, Mailing Address, and Phone (please print)
                                                               MAIL THIS FORM TO:
                                                               ORD Publications
                                                               26 W.  Martin Luther King Dr. (G72)
                                                               Cincinnati,  Ohio 45268
            * Documents ordered through ORD Publications are free of charge.
                                                           Printed on Recycled Paper
                                                          11-22
    

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            11.6
       FURTHERING THE USE OF INNOVATIVE TREATMENT TECHNOLOGIES
       IN OSWER PROGRAMS
    United States                          Off ice of                           9380.0-17FS
    Environmental Protection                  Solid Waste and                      August 1991
    Agency                              Emergency Response
    
    Furthering  the  Use of  Innovative
    
    Treatment Technologies  in
    
    OSWER  Programs
    Introduction
    
    The Office of Solid Waste and Emergency Response
    (OSWER) is seeking to further the use of innovative
    treatment technologies to permanently clean-up contami-
    nated sites in the Superfund, RCRA, and Underground
    Storage Tank (UST) programs.  According to a directive
    from OSWER's Assistant Administrator Don Clay, "...we
    must invest the necessary resources and take the risks
    now to develop the technologies necessary to fulfill the
    long-term needs of our hazardous waste clean-up pro-
    grams." The directive, which was signed on June 10,
    1991, includes a forwarding memorandum to EPA re-
    gions that calls for technological leadership and a sense of
    responsible urgency to prevent expenditures in pursuing
    less effective or more costly remedies. This fact sheet is
    based on OSWER Directive 9380.0-17.
    
    Reasonable risk-taking is encouraged in selecting innova-
    tive treatment technologies that are capable of treating
    contaminated soils, sludges, and ground water more effec-
    tively, less expensively, and in a manner more acceptable
    to the public than existing conventional methods.
    
    'Innovative treatment technologies" are newly-developed
    technologies that lack sufficient full-scale application data to
    ensure their routine consideration for site remediation. They
    may be new technologies, or may already be in use for various
    industrial applications other than hazardous waste remedia-
    tion. As such, innovative technologies are not part of stan-
    dard engineering practice or the competitive market process
    where available alternatives are routinely presented to the
    government and private sector. In functional terms, OSWER
    labels as "innovative" those treatment technologies other
    than incineration and solidification/stabilization for source con-
    trol, and other than pumping with conventional treatment for
    ground water.
    
    Inherent risks associated with early technology use serve
    as very serious impediments. The directive calls on po-
    tentially responsible parties, facility owners/operators,
    and consulting engineers to constructively work with un-
    certainty to further the application of technologies that
    are truly innovative. The directive also calls on EPA re-
    gional and headquarters managers to support Remedial
    Project Managers and On-Scene Coordinators in their ef-
    forts to use new technologies.
    
                                               11-23
                                    Innovative treatment technologies should be routinely con-
                                    sidered as an option in engineering studies where treat-
                                    ment is appropriate. They should not be eliminated from
                                    consideration solely because of uncertainties in their per-
                                    formance and cost.  These technologies may be found to be
                                    cost-effective, despite the fact that their costs are greater
                                    than conventional options, after consideration of potential
                                    benefits including increased protection, superior perfor-
                                    mance, and greater community acceptance. In addition,
                                    future sites will benefit by information gained from the
                                    field experience.
    
                                    The directive sets forth several initiatives and new proce-
                                    dures that will provide incentives for broader use of inno-
                                    vative technology. Some of these initiatives are directed
                                    toward potentially responsible parties and owner/opera-
                                    tors, since these groups will be assuming a larger share of
                                    the remedial projects in the future. Other new initiatives
                                    are intended to remove impediments to the first-time use
                                    of new equipment. The directive also encourages wider
                                    application of available resources and tools  and highlights
                                    some important on-going program efforts.
    
    
                                    New Initiatives
    
                                    1. Superfund Innovative Technology Start-Up Initiative
    
                                    OERR will be revising its procedures for setting Remedial
                                    Action funding priorities to give more consideration to in-
                                    novative technologies. Expedited funding of Fund-lead re-
                                    medial design and construction projects that involve
                                    innovative treatment technologies will move the agency to-
                                    ward the Superfund program's goals for technology devel-
                                    opment and will provide data to support future Records of
                                    Decision (RODs).
    
                                    This initiative also provides contract flexibility in the
                                    start-up phase of selected remedial and removal actions to
                                    assist vendors in establishing operations that satisfy per-
                                    formance standards. In an effort to remove some of the
                                    impediments to the use of new full-scale equipment, this
                                    initiative will provide financial support for initial start-up
                                    and shake-down prior to beginning actual remediation.
                                    Fxmds are not targeted at making the technology "work at
                                    any cost", but in establishing performance adequacy of the
                                    technology prior to the onset of the contracted cleanup.
    

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    Contracting strategies are being considered to compen-
    sate vendors regardless of whether or not they are able to
    meet performance requirements.
    
    2. Dual Track RI/FS Initiative (Superfund)
    
    EPA regions may fund additional treatability studies and
    engineering analyses for promising treatment technolo-
    gies that would otherwise be considered unproven or too
    early in the development process.  For PRP-lead sites ear-
    ly in the planning process, this initiative encourages the
    use of treatability studies to ensure that alternative rem-
    edies are thoroughly evaluated and considered in the
    ROD. Even if, in a particular case, there may be some
    doubt as to EPA's ability to recover the costs for these ad-
    ditional studies, they should nonetheless be pursued be-
    cause of their value to the overall program.
    
    3. Tandem ROD Evaluation Initiative (Superfund)
    
    Primarily applicable to PRP-lead sites (though also to
    some Fund-lead sites), this program will enable regional
    staff to rapidly evaluate the efficacy of a PRP-proposed in-
    novative remedy that is offered in tandem with  the pri-
    mary one approved in the ROD. Both remedies would be
    part of the proposed plan. The alternate solution would
    be approved in the ROD on a contingent basis but would
    undergo further development and pilot testing during the
    design period of the primary technology. Tandem RODs
    move the process of cleanup toward closure while leaving
    room for PRPs with an interest in innovative technologies
    to pursue additional pilot tests to demonstrate an alter-
    nate approach that is both innovative and potentially
    cost-effective. The OSWER/ORD Technical Support Cen-
    ters and the SITE Demonstration Program will provide
    RPMs with technical support for evaluation of PRP work.
    When considering a tandem ROD, the region should con-
    sult with ORD concerning the scope of effort required for
    the evaluation.
    
    If, after testing and evaluation, the innovative technology
    is chosen for implementation but the process has caused
    significant delays to the schedule, the region may consid-
    er the engineering problems of making the full-scale unit
    operational when assessing stipulated penalties. That is,
    in limited cases, stipulated penalties should not be im-
    posed if the delays are the unavoidable result of the use of
    an innovative process.
    
    4. Removal Program Initiative (Superfund)
    
    It is OSWER policy to further the use of innovative tech-
    nologies through the removal program.  The relatively
    small waste volumes and streamlined contracting proce-
    dures of the removal program provide an opportunity to
    complete clean-up projects and provide documentation on
    "lessons learned".
    
    The potential of the removal program for these  applica-
    tions has not been realized because  time constraints often
    favor excavation and off-site disposal or treatment and
    also because of the absence of clear legislated goals re-
    garding the use of new technology. This directive is
    meant to clarify EPA's position on this issue and to en-
    courage the use of innovative technologies for all actions,
    including time-critical actions, where feasible. These
    projects are expected to fulfill an important role in adding
    to our knowledge on promising new technologies.
    
    5. RCRA Corrective Action and Closure
        Innovative Technology Initiative
    This initiative encourages the regions to conduct treatabili-
    ty or technology demonstration studies at corrective action
    and closure sites to gain additional information on the use
    of innovative treatment for contaminated soil and debris.
    
    EPA is developing best demonstrated available technology
    (BDAT) treatment standards for contaminated soil and de-
    bris at CERCLA and RCRA corrective action and closure
    sites.  These sites present unique treatment problems
    that were not considered when developing the current
    BDAT standards which were based on data from the
    treatment of industrial process wastes.  There is general
    agreement that wide scale use of incineration is not ap-
    propriate for soil and debris and there is a need to explore
    alternative approaches.
    
    The current  schedule is to promulgate a rule for the treat-
    ment of debris in May 1992 and for soil  in April 1993.
    Prior to publication of these final rules,  a site-specific
    treatabiUty variance process (40 CFR 268.44 (h)) is avail-
    able for contaminated soil and debris to establish an al-
    ternative standard for specified waste  at individual
    sites.  The variance process, along with  applicable guid-
    ance treatment levels is described in Superfund LDR
    Guide #6A (OSWER Directive 9347.3-06FS, July 1989),
    and is intended to be used as an interim approach until
    final standards are established. The regions should work
    with owner/operators to select pilot-scale projects that
    can provide data on the capability of technologies and the
    treatability of different wastes.
    
    Authority for issuing site-specific variances for contami-
    nated soil and debris has been delegated to the regions.
    The facility and EPA, in collaboration with the state, can
    implement variances for on-site demonstrations through
    two mechanisms: temporary authorization under the
    Permit Modification Rule, or 3008(h) orders for interim-
    status facilities.
    
    6. Demonstration Projects at Federal Facilities
        (Superfund, RCRA, and UST)
    
    EPA is exploring the use of Federal Facilities for both
    site-specific  technology demonstrations and as test loca-
    tions for evaluation of more widely applicable technolo-
    gies.  Regions are encouraged to suggest innovative
    approaches and to be receptive to proposals for innovation
    from Federal Facility managers, e.g., by building timing
                                                       11-24
    

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    and performance flexibility into compliance agreements
    in acknowledgment of the uncertainties associated with
    innovation. Federal Facilities often have characteristics
    that make them desirable for applying innovative ap-
    proaches: large area, isolated locations, controlled access,
    numerous contamination problems, and increasingly ac-
    tive environmental restoration programs.
    
    The Office of Federal Facilities Enforcement (OFFE) and
    the Technology Innovation Office (MO) will work with
    the regions to identify locations for test and evaluation
    activities and to develop policies and guidance to ensure
    that support for innovation is congruent with other pro-
    gram and environmental objectives.
    
    
    Federal Technology Transfer Act
    
    During the clean-up planning and implementation pro-
    cess, PRPs or owner/operators should be reminded of
    the opportunity to engage EPA in evaluation studies or
    other arrangements (at their expense) to determine
    whether an innovative technology would be operative in
    the situation they are facing or other similar situations.
    Under the Federal Technology Transfer Act (FTTA) of
    1986, cooperative agreements related to research, de-
    velopment, and technology transfer will allow the PRP
    to reimburse EPA for facilities, support services, and
    staff time spent in joint evaluation of early technology
    treatability or pilot studies.
    
    Since this program is conducted in the research and de-
    velopment arena, it offers an opportunity for non-adver-
    sarial interaction outside the regulatory context This
    opportunity should be especially advantageous to
    (1) PRPs and owner/operators capable of early planning
    for technology options at a few sites and desirous of early
    EPA input, as well as (2) PRPs and owner/operators that
    will be faced with a number of similar waste sites in the
    future—under Superfund, RCRA Corrective Action, and
    the UST program—who want to develop more uniform,
    cost-effective technology proposals for such sites.
    Implementation
    The first six initiatives involve field testing new technolo-
    gies that may benefit from technical assistance from
    ORD. ORD represents an objective third party that can
    easily be accessed through the existing OSWER/ORD
    support structure.  This structure consists of five labora-
    tories that constitute the Technical Support Centers (both
    for Superfund and newly established for RCRA), the Su-
    perfund Technical Assistance Response Team (START)
    Program, the Bioremediation Field Initiative, and the Su-
    perfund Innovative Technology Evaluation (SITE) Pro-
    gram. OSWER has asked ORD to give priority to
    requests for technical assistance under this directive.
     Broader Application of Existing
     Policies, Available Resources,
     and Tools
     Furthering Innovative Remediation at Leaking
      ST Sites
    State and local UST programs have identified 100,000
    confirmed leaks, and this number may triple in the next
    several years. Most site remediation involves pumping
    and treating ground water and excavation and off-site
    treatment of contaminated soils. Regional offices should
    increase their efforts to make state and local managers
    and staff, as well as clean-up consultants and contractors,
    more familiar with non-traditional but proven technolo-
    gies. Headquarters will continue fostering the develop-
    ment of new tools and techniques and should increase its
    support of regional efforts to achieve broader use of im-
    proved technologies.
    
    Further Enabling State Innovative Technology
    Leadership
    
    The CERCLA core funding program provides an opportu-
    nity to assist states in establishing innovative technology
    advocates. Cooperative agreements with state response
    programs may be a vehicle to support and promote the
    use of innovative technologies in state CERCLA pro-
    grams, with spinoff benefits for their RCRA and UST pro-
    grams as well.
    
    In addition, regions should be open to assisting states in-
    terested in furthering technology development and en-
    courage state applications for authority for RCRA R&D
    permitting, permit modification, treatability exclusion,
    and Subpart X permitting. States may also want to work
    directly with Federal Facilities in developing pilot sites
    for innovative technologies. For the reasons discussed in
    the section on Federal Facilities above, these sites are of-
    ten good candidates for such development projects.
    
    Model RI/FS Work Plan and PRP Notice Letter
    Demand for Innovative Options
    
    Some regions have issued special notices containing a
    Statement of Work and administrative order language re-
    quiring the responsible party to evaluate the use of inno-
    vative technologies at a particular site. This procedure
    should receive broader use at Superfund sites where al-
    ternatives for remediation are being considered for analy-
    sis in the RI/FS and where prerequisite treatability
    studies are required.  This requirement in the special or
    general notice letters will help facilitate the development
    and use of innovative treatment technologies by the pri-
    vate sector.  Specific language for this approach can be
    developed from OWPE's guidance document entitled
    "Model Statement of Work for RI/FSs Conducted by
    PRPs" (OSWER Directive 9835.8).
                                                  11-25
    

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    Advocacy and Funding of Treatablllty Studies
    
    Superfund program policy requires that treatability
    studies be conducted to generate data to support the
    implementation of treatment technologies. Funds are
    budgeted annually in the SOAP based on expected
    need. Data and reports should be sent to Glen Shaul at
    RREL for inclusion in the ATTIC database.  The correct
    protocol and format for these reports is in EPA's "Guide
    for Conducting Treatability Studies Under CERCLA"
    (EPA/540/2-89/058). Oversight funding for evaluating a
    PRP-lead treatability study should also be requested
    through the SOAP budget process. Oversight of PRP-
    lead treatability studies may be funded through the en-
    forcement budget. If a PRP recommends use of an
    innovative treatment at a site, but current treatability
    study data on the technology are insufficient, EPA poli-
    cy allows the Agency to conduct and fund technology-
    specific treatability studies. Cost of these studies are
    recoverable under Section 107 of CERCLA.
    
    Tracking and Expediting SITE Demonstrations
    
    OSWER is encouraging greater participation in the SITE
    program in response to a recent Inspector General audit
    of the program that focused on delays in  matching Super-
    fund sites with technologies. ORD management has also
    agreed that SITE demonstration projects must be more
    responsive to regional needs for treatability data.
    
    The SITE program will make the design of technology eval-
    uation sufficiently flexible to meet the regional offices'
    needs for treatability studies before remedy selection is
    made. Based on an ORD internal management review of
    the SITE program, changes are underway to make the
    program a more integral component of regional Super-
    fund site activities.
    
    Existing  Program Efforts
    
    OSWER has several other ongoing efforts directed toward
    furthering the application of innovative alternatives. These
    represent important resources that should continue to be
    used by the UST, RCRA, and Superfund Programs.
    
    Technical Support and Information Management
    
    EPA maintains several computer database that may be
    accessed for information on treatment technologies.
    These databases include the Alternative Treatment Tech-
    nology Information Center (ATTIC), the Cleanup Infor-
    mation (CLU-EN) Bulletin Board, the ROD Database, the
    Hazardous Waste Collection Database, and the Comput-
    erized On-line Information System (COLIS). These sys-
    tems include information on the application of innovative
    technologies and may be used to aid networking among
    OSCs and RPMs.
    Technical assistance is available to Superfund and RCRA
    staff through ORB'S Technical Support Centers and the
    Environmental Response Branch of OERR. Part of this
    effort involves networking among project managers
    through the Engineering and Ground Water Forums. In
    addition, as part of an initiative to provide direct techni-
    cal support to OSCs and RPMs, the Superfund Technical
    Assistance Response Team (START) has been established
    to help evaluate the potential use of technologies.
    
    Bloremedlatlon Field Initiative
    
    Begun in the fourth quarter of FY 1990, this program is
    intended to provide more real-time information on the
    field application of biotechnology for treating hazardous
    waste. The major focus of this initiative is to furnish
    direct support in evaluating full-scale cleanup
    operations and technical assistance for conducting
    treatability and pilot-scale studies.
    
    Eliminating Contract Impediments
    
    Under the Federal Acquisition Regulations, firms are
    restricted from performing both the design and
    construction of a project. EPA has determined that this
    applies only to the prime contractor responsible for the
    overall design, and not to the subcontractors
    performing treatability studies.
    
    Innovative technology is considered a special exception
    from general conflict of interest guidelines.  EPA will
    permit contractors and/or subcontractors who perform
    evaluation of innovative technologies for the Agency to
    later work for the PRPs in as many  instances as
    possible.
    
    
    Additional Information
    
    Copies of the policy (OSWER Directive 9380.0-17) and ad-
    ditional copies of this fact sheet are available from:
    
        National Technical Information Service (NTIS)
                   Springfield, VA 22161
                   Phone (703) 487-4650
    
    Agency and State employees may obtain copies of the di-
    rective or this fact sheet from the Superfund Document
    Center, U. S. Environmental Protection Agency, Room
    2514,401M Street S.W., Washington, DC 20460. The
    telephone number is FTS or 202/382-5628.
                                                  11-26
    

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      11.7
    MARKET ASSESSMENT FOR INNOVATIVE TREATMENT TECHNOLOGIES
                MARKET ASSESSMENT FOR INNOVATIVE TREATMENT TECHNOLOGIES
    
                                 U.S. Environmental Protection Agency
                             Office of Solid Waste and Emergency Response
                                     Technology Innovation Office
    
                                           September 1991
    Purpose      To provide information to assist technology developers in assessing cleanup markets for
                  Superfund, hazardous waste, and underground storage tanks.
    
    Background   Vendors and investors need data on the market for innovative technologies in order to
                  make financing, development, and marketing decisions. Useful information includes site
                  and waste characteristics (including chemical contaminants and material volumes), sites
                  under consideration for Superfund Records of Decision (RODs), and upcoming construction
                  opportunities. These data are often buried within the various offices of EPA, the States, and
                  other Federal agencies.
    
    Approach     EPA will collect readily-available information on the  numbers and types of contaminated
                  sites. Data will be presented on State nonNPL sites,  Federal facilities, CERCLJS sites, NPL
                  sites, corrective action sites, and underground storage tanks.
    
                  Because more data are available for National Priorities List (NPL) sites, EPA will conduct
                  a more detailed analysis on the types and volumes of contaminated material on NPL sites.
                  Sites will be categorized by the type and source of the waste.  For each category,
                  estimates will be derived for total volumes of contaminated soil, as well as the volumes that
                  are scheduled for remediation in upcoming fiscal years.
    
                  The study will also document the innovative technologies that have already been selected
                  in RODs, the types and quantities of waste to be  remediated, and known remediation
                  schedules.
    
                  Plans are to publish a market monograph at regular intervals. Each monograph will update
                  and expand on the previous documents.
    
    Project       The first  monograph will be completed  in the fall of 1991.  EPA plans to conduct a
    Status        meeting of outside advisors to obtain feedback on the utility of the initial monograph, and
                  to develop new ideas for data and analyses to be included in future reports.
    
    Contact      To be placed on the mailing list to receive the market monographs, call Melinda DeLoatch
                  at 703/308-8802.  For further information on  this project,  contact Linda Fiedler at
                  703/308-8799.
                                                11-27
    

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    11.8          THEATABILITY STUDIES
    
    
    Current Status
    
    
           Treatability studies are often required to assess the potential for application of a treatment
    
    technology at a specific site. Guidance documents currently exist, and technology-specific
    protocols are being prepared.  A summary of these is provided below.
    
    
    Available Guidance
    
    
           Treatability Studies under CERCLA:  An Overview, 12/89, OSWER Directive 9380.3-
           02FS (Fact Sheet).
    
           The  Remedial Investigation Site Characterization and Treatability Studies, OSWER
           Directive 9355.3-01FS1 (Fact Sheet).
    
           Guide for Conducting Treatability Studies under CERCLA, Interim Final (Generic
           Protocol), EPA/540/2-89/058.
    
           Inventory of Treatability Study Vendors, Draft Interim Final, EPA/540/2-90/003a.
           Guide for Conducting Treatability Studies under CERCLA: Aerobic Biodegradation
           Remedy Screening, EPA 540/2-91/013
    
    
    Protocols in Development
    
    
           The  following treatability study guides/protocols will be prepared with assistance from
    EPA's Office of Research and Development,  Risk Reduction Engineering Laboratory:
    
    
              •  Soil washing
    
              •  Solidification/stabilization of inorganics
    
              •  Soil vapor extraction
    
              •  Chemical dehalogenation
    
              •  Low temperature desorption
    
              •  Solvent extraction
                                              11-28
    

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         11.9
    vvEPA
    TECHNICAL SUPPORT SERVICES FOR SUPERFUND SITE REMEDIATION
    United States      Office of Solid Waste and  EPA/540/8-90/011
    Environmental Protection Emergency Response    November 1990
    Agency        Washington DC 20460
    
    Superfund	
    
    
    
    Technical Support
    
    
    Services for Superfund
    
    
    Site Remediation
                Second Edition
                             11-29
    

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       Accessing the  Directory
    Technical Support Sources and Brokers
    TAS* n rt i s^*1) 1 Ci ir^r%^*\i"fr Dfr\t&f*t
    lecnnicai support rrojeci
    Engineering Programs
    Toxics Integration Branch
    Superfund Technical Liaison Program
    Air/Superfund Coordination Program
    Chemical Assessment Desk
    Superfund Innovative Technology Evaluation Program
    Bioremediation Field Initiative
    Automated Information Systems
    OSWER Electronic Bulletin Board
    RODS Database
    Alternative Treatment Technology Information Center
    Expert Resources Inventory System
    Hazardous Waste Collection Database
    Integrated Risk Information System
    Center for Exposure Assessment Modeling
    Subsurface Remediation Information Center
    International Ground Water Modeling Center
    Publications
    Catalog of Superfund Directives
    OSWER Directives— System Catalog
    Superfund Risk Assessment Information Directory
    Annotated Technical Reference for Hazardous Waste Sites
    Compendium of Frequently Used Guidance Documents
    Selected Alternative and Innovative Treatment Technologies
    SITE Program Fact Sheet
    Other Sources of Information
    National Association of RPMs
    National OSC Association
    Regional Response and Removal Coordinators
    Regional ARARs Coordinators
    Federal Facilities Coordinators
    Center for Environmental Research Information
    Hazardous Substance Research Centers
    Specialty Area Contacts
    
    
    
    
    
    
    
    
    
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    Use this chart to identify the programs that offer expertise in your area of concern. If you're not sure where
    to start, try one of the Regional Contacts listed in Appendix A, beginning on page 23 or call Rich Steimle in
    OSWER's Technology Innovation Office at FTS 382-7914—he'll get you connected with the right source.
    

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    Technical Support Services
                for
    Superfund Site Remediation
            SECOND EDITION
                                Printed on Recycled Pape
    

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    Questions or comments on this document should be directed to:
    
           Richard Steimle
           U.S. Environmental Protection Agency (OS-110)
           401 M Street, S.W.
           Washington, DC 20460
    The preparation of this document was funded by the United States Environmental Protection Agency
    under Contract number 68-01-7481. This Directory was  prepared by Environmental Management
    Support, Inc., Silver Spring, MD, under subcontract to ICF, Incorporated. Mention of trade names does
    not constitute endorsement or recommendation for use.
                                           11
    

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                                       Preface
    
    The Office of Solid Waste and Emergency Response and the Office of Research and
    Development provide numerous opportunities for technical assistance—some multi-faceted
    and others directed to specific topics.  This Directory of Technical Support Services was
    first prepared in response to the Administrator's 90-Day Review of Superfund and the
    need to make  such technical assistance more widely available. This edition has been
    updated with an organizational overview of the many sources and facilitators for technical
    assistance in addition to some additional sources and a restructured list of headquarters
    contacts.
    
    The goal of this Directory is to enable EPA field staff to quickly identify the existing
    technical support services that will be most useful for their specific problem. Rather than
    an exhaustive inventory of all sources of technical information, this Directory highlights
    the significant OSWER and ORD technical assistance programs—those that have proce-
    dures in place to process requests for assistance (e.g.,  answering a  technical question,
    providing staff to work on the problem, or referring callers to the appropriate source).
    The Directory  will  allow users to access the most information with the least effort.
                                           Walter W. Kovalick, Jr., Ph.D.
                                           Director, Technology Innovation Office
                                          111
    

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              An Organizational Overview of
               Superfund Technical Support
    Brokers/
    Facilitators
    Engineering & Ground Water Forums
             (Regional)
       Superfund Technical Liaisons
             (Regional)
         OSWER Bulletin Board
            (Headquarters)
        Technical Support Project
            (Headquarters)
        Toxics Integration Branch
            (Headquarters)
                          nologfAssistan
                         Response
                     Innovative Technology Evaluation
                       Support Centers at ERl-Athens
                                                  ECAO-Ciilt
    Sources
                                IV
    

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                        Technical Support Services for Supcrfund Site Remediation
                                        Contents
    
    Technical Support Sources and Brokers  	   i
       Technical Support Project (TSP)	   1
          Monitoring and Site Characterization Technical Support Center  	   1
          Ground-Water Fate and Transport Technical Support Center	   1
          Exposure and Ecorisk Assessment Technical  Support Center  	   2
          Environmental Response Team Technical Support Center	   3
          Health and Risk Assessment Technical Support Center  	   3
          Ground-Water and Engineering Technical Support Forums	   4
       Engineering Programs and Treatability Studies	   5
          Engineering and Treatment Technical Support Center 	   5
          Treatability Assistance Program  	   5
          Superfund Technology Assistance Response Team (START)  	   6
       Toxics Integration Branch  	   7
       Superfund Technical Liaison Program (STLP)	   8
       Air/Superfund Coordination Program  	   9
       Chemical Assessment Desk (CAD)	  10
       Superfund Innovative Technology Evaluation (SITE) Program	  11
       Bioremediation Field Initiative	  12
    
    Automated Information Systems	  13
       OSWER Electronic Bulletin Board (OSWER BBS)  	  13
       RODS Database	  13
       Alternative Treatment Technology Information Center (ATTIC)	  13
       Expert Resources Inventory System (ERIS)	  14
       Hazardous Waste Collection Database (HWCD)	  14
       Integrated  Risk Information System (IRIS)  	  14
       Center for Exposure Assessment Modeling (CEAM)	  15
       Subsurface Remediation Information Clearinghouse  	  15
       International Ground-Water Modeling Center (IGWMC)	  15
       Commercial Databases 	  15
    
    Publications 	  16
       Catalog of Superfund Directives	  16
       OSWER Directives - System Catalog	  16
       Superfund Risk Assessment Information Directory	  16
       Annotated Technical Reference for Hazardous Waste Sites  	  16
       Compendium of Frequently Used Guidance Documents  in Selecting Response Actions   16
       Selected Alternative and Innovative Treatment Technologies  	  17
       SITE Program Fact Sheet  	  17
    
    Other Sources of Information  	  19
       National Association of RPMs	  19
       National OSC Association	  19
    

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                       Technical Support Services for Superfimd Site Remediation
       Regional Response and Removal Coordinators	  19
       Regional ARARs Coordinators	  19
       Federal Facilities Coordinators	  20
       Center for Environmental Research Information (CERI)  	  20
       Hazardous Substance Research Centers (HSRQ	  20
       Specialty Area Contacts	  21
    
    APPENDIX A: Regional Contacts	  23
    
    APPENDIX B: Headquarters Contacts	  33
                                          VI
    

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                         Technical Support Services for Superfund Site Remediation
                      Technical Support Sources and Brokers
                              Technical Support Project (TSP)*
    
    Monitoring and Site Characterization Technical Support Center
    Environmental Monitoring Systems Laboratory, Las Vegas (EMSL-LV)
    
    Contact:  Ken Brown
              FTS 545-2270 or (702) 798-2270
    
    EMSL, Las Vegas, Nevada, provides scientific and technical assistance in contaminant detection,
    hydrologic monitoring, site characterization, sample analysis, data interpretation, and geophysics.
    Services include:
    
      •  Saturated and unsaturated zone monitoring
      •  Remote sensing, mapping, and geostatistics
      •  Analytical methods and quality assurance
      •  Bore-hole and surface geophysics
      •  X-ray fluorescence field survey methods
      •  Mixed waste and radiological analysis
    Ground-Water Fate and Transport Technical Support Center
    Robert S. Kerr Environmental Research Laboratory (RSKERL)
    
    Contact:  Dick Scalf
              FTS 743-2308 or (405) 332-8800
    
    RSKERL, in Ada, Oklahoma, is EPA's center for fate and transport research, focusing its efforts
    on transport and fate of contaminants in the vadose  and saturated  zones of the subsurface,
              *  The TSP is made up of six Technical Support Centers and two Technical Support
              Forums. It is a joint service of the Office of Solid Waste and Emergency Response, the
              Office Research and Development, and the Regions.  The TSP offers direct site-specific
              technical assistance to OSCs and RPMs and develops technology workshops, issue papers,
              and other information for Regional staff. The TSP:
    
               • Reviews contractor work plans, evaluates remedial alternatives, reviews RIIFS, assists
                 in selection and design of final remedy
               • Offers modeling assistance and data analysis and interpretation
               • Assists in developing and evaluating sampling plans
               • Conducts field studies (soil gas, hydrogeology, site characterization)
               • Develops technical  workshops  and training, issue papers on ground-water and
                 engineering topics, generic protocols
               • Assists in performance of treaiability studies
    

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                         Technical Support Services for Superfund Site Kcmnliuiion
    methodologies relevant to protection and restoration of ground-water quality, and evaluation of
    subsurface  processes for the  treatment of hazardous waste.  The Center provides technical
    assistance such as evaluating remedial alternatives; reviewing RI/I'S and RD/RA workplans; and
    providing technical information and advice in:
    
      • Pump and  treat technology for aquifer remediation
      • In situ biorestoration of soils and ground water
      • Subsurface geochemistry
      • Contaminant transport modeling
      • Subsurface contaminant transformation
    
           Subsurface Remediation Information Clearinghouse.
           Contact John Matthews at RSKERL at FTS 743-2233 or (405) 332-8800.
    
           The Subsurface Remediation Information Clearinghouse was established at RSKERL to
           provide for transfer of up-to-date subsurface fate, transport, and remediation research and
           demonstration information. The Clearinghouse's technical information specialists locate,
           assess,  and  document pertinent information  sources, including  planned, active,  or
           completed subsurface remediations.  This information  is  used in the development and
           maintenance of four specific databases:
    
           •  Soil transport and fate database
           •  Subsurface remediation literature database
           •  Biotechnology/bioremediation practitioners database
           •  Subsurface remediation database
    
           International Ground-Water Modeling Center (IGWMC)
           Contact Cathy  Mulberry at (317) 283-9458
    
           RSKERL also supports the operation of the International Ground-Water Modeling Center
           (IGWMC) at the Holcomb Research Institute in Indianapolis, Indiana.  IGWMC collects
           and disseminates information about  ground-water  modeling software.   The  Center
           compiles databases  of descriptions of ground-water models  and offers  courses and
           seminars on the theory and application of ground-water models.
    
    Exposure and Ecorisk Assessment Technical Support Center
    Environmental Research Laboratory, Athens (ERL-Athens)
    
    Contact:   Bob Ambrose
              FTS 250-3130 or (404) 546-3130
    
    ERL, Athens, Georgia, emphasizes  multimedia exposure  and  risk  assessment  modeling of
    remedial action alternatives.  An electronic bulletin board has been established to disseminate
    models and databases and to exchange modeling information.  The technical support services
    include:
    

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                         Technical Support Services for Superfund Site Remediation
      • Models, databases, and analytical techniques
      • Multimedia modeling of organic chemical and heavy metal pollutant fate
      • Soil/water and surface water/sediment systems
      • Ecological impact and ecorisk assessments
    
    Environmental Response Team Technical Support Center
    Environmental Response Team (ERT)
    
    Contact:  Joseph Lafomara
              FTS 340-6740 or (201) 321-6740
    
    ERT, in Edison, New Jersey, provides support in responding to releases of hazardous waste,
    chemicals, and oil.  ERT also provides support in risk assessment, multi-media sampling and
    analysis, health and safety, cleanup techniques, and training for response personnel.  Services
    include:
    
      • Response techniques for emergency hazardous chemical releases
      • Treatment technologies, sampling plans, and contaminant assessment
      • Technical review for remedial and removal technology, safety, and preparedness
      • Hazardous Materials Incident Response Training Program
      • Site-safety plans, personnel protection, and safety
    
    Health and Risk Assessment Technical Support Center
    Environmental Criteria and Assessment Office-Cincinnati (ECAO-Cin)
    
    Contact:  Pei Fung-Hurst
              FTS 684-7534 or (513) 569-7534
    
    ECAO,  in Cincinnati, Ohio, provides rapid turnaround support in the assessment of Superfund
    health and risk issues.  The Center at ECAO-Cin:
    
      •  Provides chemical-specific health information
      •  Answers questions on the Risk Assessment Guidance for Superfund (RAGS) Human Health
        Evaluation Manual
      •  Develops interim and default approaches for issues related to risk assessment for Superfund
        sites
      •  Reviews site-specific Superfund risk assessments
      •  Develops, in cooperation with Superfund staff,  site-specific and health-based trigger  or
        cleanup levels for a contaminant
      •  Assists Regions in the identification of surrogate cleanup levels based on risk to human health
    
    Engineering and Treatment Technical Support Center
    Risk Reduction Engineering Laboratory, Cincinnati (RREL)
    
    (see description on  page 5)
    

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                        Technical Support Services for Superfund Site Remediation
    Ground-Water and Engineering Technical Support Forums
    
    Technical Support Forums are comprised of one or more technical specialists, RPMs, or OSCs
    from each of EPA's ten Regions.  Two Forums have been established to date:  Ground-Water
    Fate and Transport, and Engineering. Forum members provide information to OSCs and RPMs
    in their Regions regarding TSP efforts, research undertaken by the Centers, and problems and
    successes experienced by other Regions, including the application of remedial technologies at
    Superfund sites.  Forum members convene by telephone monthly and meet twice each year.
    Forum members:
    
      • Channel communications among the  Regions, TSCs, headquarters personnel, and existing
       EPA technical programs
      • Increase the transfer of information among the Centers and the Regions
      • Act as a technical resource to the Regions and the Centers
      • Route technical assistance information to Regional colleagues
    
    Consult Appendix A, Regional Contacts,  for the names and numbers of the Forum Members in
    your Region.
    

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                         Technical Support Services for Superfund Site Remediation
                       Engineering Programs and Treatability Studies
                        Ben Blaney:  FTS 648-7406 or (513) 569-7406
    
    EPA's Risk Reduction Engineering Laboratory offers the Regions three engineering technical
    assistance programs:
    
      • Engineering and Treatment Technical Support Center
      • Treatability Assistance Program (TAP)
      • Superfund Technology Assistance Response Team (START)
    
    The  Engineering and Treatment  Technical Support Center  and  the  Superfund Technology
    Assistance Response Team (START) both handle site-specific remediation engineering problems
    for RPMs. The  Treatability Assistance Program is intended to enhance RPMs' knowledge of
    treatment  technologies and the  conduct of  treatability studies through technology transfer
    activities and the augmentation of EPA's in-house treatability  study capabilities.
    
    RREL offers  expertise in  contaminant source control  structures;  materials handling  and
    decontamination; treatment of soils, sludges, and sediments; and treatment of aqueous and organic
    liquids. The following are examples of the technical assistance that can be obtained through
    RREL:
    
      • Review of treatability aspects of RI/FS
      • Review of RI/FS treatability study workplans and final reports
      • Oversight of  RI/FS  treatability studies
      • Review of treatability RFPs
      • Definition  of alternative remedies
      • Assistance with  studies of innovative technologies
      • Assistance in full-scale design and start-up
    
    Engineering and Treatment Technical Support Center
    
    The  Engineering and  Treatment Technical  Support Center plans  and  conducts engineering
    research and development related to treatment of  solid and hazardous wastes.  The Center is
    intended to supply quick-response technical  assistance on focused, site-specific problems.
    
    Treatability Assistance Program
    
    Laboratory in-house treatability study capabilities cover soils and liquid streams.  There are
    facilities for solidification, incineration, and chemical treatment studies of soils and incineration
    and  chemical/physical/biological treatment  of liquids.   Facilities  for  conducting  studies of
    extraction and biological treatment of soils are being developed.
    
    The  Treatability  Assistance Program offers the following types of technology transfer support:
    
      • List of available contractors to perform treatability studies
      • Generic and technology-specific treatability study protocols (in preparation)
    

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                        Technical Support Services for Superfund Site Remediation
      • Comprehensive database of all aqueous treatability studies
      • Brief Treatment Technology Bulletins describing the applicability of various technologies
    
    To obtain  any of these lists or documents, contact Joan Colson (FTS 684-7501 or (513) 569-
    7501).
    
    Superfund Technology Assistance Response Team (START)
    
    The Superfund Technology Assistance Response Team (START) team provides technical support
    on Superfund site remediation from initial site evaluation through post-ROD design phases of
    remedial actions. START provides a long-term commitment of ORD engineering expertise (from
    RI/FS work plan development through 30% remedial design) as part of the technical assistance
    team for remediation of a particular site.  Sites to receive START assistance are identified by
    Regional management
    

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                         Technical Support Services for Superfund Site Remediation
                                 Toxics Integration Branch
                       David Bennett:  FTS 475-9486 or (202) 475-9486
    
    The Toxics Integration Branch (TIB) of the Office of Emergency and Remedial Response's
    Hazardous Site Evaluation Division coordinates development of Superfund guidance, databases,
    technical assistance networks and program Directives relating to the  (1) conduct of baseline
    health and environmental risk assessment; (2) development of risk information for remedial
    alternatives; and (3) use of risk information in establishing remediation  goals during the remedy
    selection process.  In addition to providing guidance in the  above areas, TIB  can assist the
    Regions in resolving conflicts with the Agency for Toxic Substance and Disease  Registry
    (ATSDR) and in developing risk-related training programs for Regional, state, or contractor staff.
    TIB has  established a network of Regional Toxics Integration Coordinators that can assist
    program staff on related matters at the Regional level.
    
    Consult Appendix A, Regional Contacts, for the Toxics Integration Coordinator in your Region.
    

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                        Technical Support Services for Superfund Site Remediation
                       Superfund Technical Liaison Program (STLP)
                      David Klauder:  FTS 382-7667 or (202) 382-7667
    
    An ORD Technical Liaison will be placed in the Hazardous Waste Management Division of
    interested Regions to serve as a source of ORD information and to offer suggestions as to which
    laboratory can provide assistance to Regional  emergency response, removal and remedial,
    enforcement, and environmental services personnel. STLP representatives in the Regions serve
    as brokers of technical support services to put requesters  in touch with technical information
    suppliers.
    
    Consult Appendix A, Regional Contacts, for the Superfund Technical Liaison in your Region.
    

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                         Technical Support Services for Superfund Site Remediation
                           Air/Superfund Coordination Program
                      Joseph Padgett:  FTS 629-5589 or (919) 541-5589
    
    Regional Air Offices review RODs for air impacts due  to remediation.  The Air/Superfund
    Coordination program is designed to help RPMs design ways to mitigate air impacts at Superfund
    sites, provide Air Office liaisons to Regional Superfund offices, and provide technical assistance
    and recommendations.
    
    The Air/Superfund Coordination Program offers:
    
      • Direct support:  site evaluation, remedy selection, modeling assistance, monitoring, air
       pollution control devices
      • Support services:  interprogram coordination, training,  resolving interprogram issues
      • National Technical  Guidance  Studies  (NTGS) to improve  quality and consistency of
       procedures and data collection.  The  four-volume  set covers baseline air emissions, air
       emissions from remediation,  modeling and  monitoring  protocols,  air pathway  analysis
       procedures, and remediation field support procedures.
    
    Consult Appendix A, Regional Contacts, for the Air/Superfund Coordinator in your Region.
    

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                        Technical Support Services for Superfund Site Remediation
                            Chemical Assessment Desk (CAD)
                      Elaine Suriano:  FTS 382-3544 or (202) 382-3544
    
    The Chemical Assessment Desk, operated by the Office of Toxic Substances, provides technical
    consultation and information on chemical risk-related issues to EPA Program Offices, Regions,
    and State and local agencies.
    
    CAD offers a single contact point to:
    
      • Consult on risk assessment and risk management activities for chemicals that have been
       evaluated in the OTS Existing Chemical Program
      • Obtain assistance in identifying risk assessment activities in other EPA offices and Federal
       agencies
      • Obtain estimates of toxicity and environmental fate based on structure-activity relationships
      • Help identify  unpublished information submitted to OTS
      • Obtain comments on technical aspects of non-OTS evaluations and risk  assessments
                                             10
    

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                         Technical Support Services for Superfund Site Remediation
               Superfund Innovative Technology Evaluation (SITE) Program
                       John Martin:  FTS 684-7758 or (513) 569-7758
    
    The SITE Program supports development of technologies for assessing and treating waste from
    Superfund sites. The program provides an opportunity for commercial technology developers to
    demonstrate the capabilities of their technologies. EPA evaluates the technologies and provides
    an assessment of their potential for future application.
    
    The SITE Program is made up of four components:  the Demonstration Program, the Emerging
    Technologies Program, the Monitoring and Measurement Technologies Program, and Technology
    Transfer activities.
    
    Each Region  has a contact person that provides information on the SITE Program.  Consult
    Appendix A,  Regional Contacts, for the name and number of the contact in  your Region.  To
    propose a candidate demonstration site, contact either your Regional Contact or John Martin at
    the Risk Reduction Engineering Laboratory at the number above.
    
    Technical reports describing completed demonstrations and general information may be obtained
    from the Center for Environmental  Research  (CERI) in Cincinnati, Ohio at  FTS 684-7562 or
    (513) 569-7562.  As  of  September,  1990, forty-three  technologies have been selected  for
    evaluation. Fourteen demonstrations have been completed, and eight final reports are available.
    In addition, updates to demonstrations are posted on the OSWER Electronic Bulletin Board. (See
    description on page 13.)
                                              11
    

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                         Technical Support Services for Superfund Site Remediation
                               Bioremediation Field Initiative
                        Fran Kremer FTS 684-7346 or  (513) 569-7346
    
    OSWER and ORD have jointly instituted a Bioremediation Field Initiative to provide assistance
    to the  Regions in conducting  field tests and evaluations of bioremediation site cleanups in
    Superfund, RCRA, UST, and state non-NPL programs planned or in progress as of June, 1990.
    The initiative will be in effect for the next 18 to 24 months.
    
    The initiative is designed to more fully document performance of full-scale field applications of
    bioremediation, provide technical assistance for sites in a feasibility or design stage (to facilitate
    treatability studies), and regularly provide the Regions with information on treatability studies,
    design, and full-scale operations of bioremediation projects in the Regions.
    
    To request assistance at  a Superfund  site or  obtain  more  information about  on-going
    bioremediation projects in  the field, contact Fran Kremer at the number above.
                                               12
    

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                                  Automated Information Systems
                          Automated Information Systems
    
    1.     OSWER Electronic Bulletin Board (OSWER BBS)
          Contact:  Jim Cummings FTS 382-4686 or (202) 382-4686
    
          The OSWER Electronic Bulletin Board System (BBS) facilitates communication and the
          dissemination of information  among EPA staff in Regional offices, headquarters, and
          research laboratories.
    
          To use the OSWER BBS you need a personal computer or terminal, a modem, and a
          communications program. To access the OSWER BBS, dial (301) 589-8366 after setting
          your CrossTalk parameters to 8 data bits,  1 stop bit, and no parity.  Choose your own
          password, complete an  on-line registration questionnaire and in 24 hours you'll be a
          registered user with full access to all features of the system. The BBS is available to
          EPA staff, current contractors, and State and Federal agency personnel.
    
          Major features of the OSWER BBS include:
    
            • Information Bulletins
            • Message  Exchange
            • File Exchange
            • Technical Publication Ordering
            • On-line Databases and Directories
    
    2.     RODS Database
          Contact:  RODS Information Hotline (202) 245-3770
    
          RODS is an automated database containing  Superfund Records of Decision (ROD), which
          describe the  planned course of action to clean up a site.  The database, installed on a
          mainframe at EPA's National  Computer Center  in  Research Triangle Park, allows
          searching for selected information from ROD documents or NTIS Abstracts.  Access is
          via modem from  a PC.
    
    3.     Alternative Treatment Technology Information Center (ATTIC)
          Contact:  Myles Morse  FTS 475-7161  or  (202) 475-7161
    
          The ATTIC system is designed to provide  technical information on alternative methods
          of hazardous waste treatment.  ATTIC is available through any modem-equipped IBM
          compatible PC using standard communications software. The on-line system allows the
          experienced user  to conduct searches and download technical information without going
          through the ATTIC system operator. The ATTIC system operator is available to respond
          to information requests from users that do not have communications capabilities or do not
          wish to conduct their own searches.
                                            13
    

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                                  Automated Information Systems
          The core of the ATTIC system is the ATTIC Database, a user-searchable, keyword-driven
          system that contains technical information in the form of abstracts or report summaries
          from  a variety of  sources including  the  SITE  Program, States, industry, NATO,
          DOD/DOE,  RODs,  and Treatability Studies.  The  two other online user-searchable
          databases in ATTIC are the RREL Water Treatability Database and Technical Assistance
          Directory.
    
          Other databases contained in the ATTIC system that can be searched by the System
          Operator upon request include:
    
              •   RSKERL Soil Transport and Fate Database
              •   EPA Library  Hazardous Waste Collection Database
              •   Cost of Remedial Action Model
              •   Geophysics Advisor Expert System
              •   RODS Database
    
          Access to the on-line ATTIC system is controlled by a log-in ID and password available
          from the ATTIC  system operator.  Technical information  requests can also be made
          directly to the system operator. The ATTIC system operator can be reached at (301) 816-
          9153.
    
    4.     Expert Resources Inventory System (ERIS)
          Contact: Kurt Lamber FTS 398-8624 or (703) 308-8624
    
          The Expert Resource Inventory System, maintained by  the Office of Waste Programs
          Enforcement (OWPE), is a searchable database that contains resumes in summary form
          and information on qualifications, area of expertise, and previous experience of specialists
          available as expert witnesses or consultants to  support hazardous waste enforcement
          actions. The database may be accessed by EPA and Department of Justice staff upon
          request. The database has been classified as "enforcement confidential" and is protected
          under the Privacy  Act of 1974.  Hard copies of complete resumes and other supporting
          documents are maintained in a parallel file in OWPE.  Plans are underway to make ERIS
          available to authorized users on the OSWER Electronic Bulletin Board.
    
    5.     Hazardous Waste Collection Database (HWCD)
          Contact: Liliana Puzick FTS 382-2977 or (202) 382-2977
    
          The HWCD is a bibliographic database containing abstracts of EPA and other government
          agency reports, commercial books, policy  and  guidance  directives,  legislation,  and
          regulations concerning hazardous waste  that is  searchable by subject.   A database
          thesaurus is available to aid users in designing efficient searches.
    
    6.     Integrated Risk Information System (IRIS)
          Contact: Linda Tuxen FTS 382-5949 or (202) 382-5949
    
          IRIS contains health risk data, bibliographic and textual information on risk management,
    
                                             14
    

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                                   Automated Information Systems
           water quality criteria, and drinking water standards.  It is available on-line through EPA's
           electronic mail system (E-MAIL).
    
           To access IRIS through E-MAIL, after signing on, type "IRIS" at the ">" prompt.
    
    7.     Center for Exposure Assessment Modeling (CEAM)
           Contact: Bob Ambrose FTS 250-3130 or (404) 546-3130
           CEAM BBS:  FTS 250-3402 or (404) 546-3402
    
           CEAM  offers  state-of-the-art  exposure  assessment   technology  and  models  for
           environmental risk-based decisions. CEAM provides:
    
           •  Assistance in site-specific problem definition and predictive techniques for assessing
              metals and chemical pathways
           •  Training  and assistance to Regional  Superfund staff in exposure  and ecorisk
              assessments
           •  Distribution of models and databases
           •  Expert witness testimony and exposure calculations and assessments for especially
              difficult or unusual scenarios, peer review of exposure and ecorisk assessments
    
    8.     Subsurface Remediation Information Clearinghouse
           Contact: John Matthews FTS 743-2233 or  (405) 332-8800
    
           See description on page 2.
    
    9.     International Ground-Water Modeling Center (IGWMC)
           Contact: Cathy Mulberry at (317) 283-9458
    
           See description on page 2.
    
    10.     Commercial  Databases searchable free of charge by EPA HQ and Regional Librarians:
           DIALOG, Chemical  Information System, and BRS  Search Services  are examples of
           commercial databases that  abstract information relevant to EPA's hazardous  and solid
           waste programs.  Other commercial databases, including legal systems, are also  available.
           For more information, contact your Regional librarian.
                                             15
    

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                                         Publications
                                      Publications
    1.     Catalog of Superfund Directives  OSWER Directive 9200.7-01 - July 1988 (61 pages)
          The Catalog provides a reference to policy, procedural, and technical directives governing
          the Superfund program.  Regular supplements are planned.  Publications abstracted must
          be obtained from the issuing office. Regional and HQ libraries also have copies. Copies
          of the Catalog may be obtained from the Superfund Docket at (202) 382-6940 or FTS
          382-6940.
    
    2.     OSWER Directives • System Catalog  OSWER Directive 9013.15-3D  (30 pages)
          Provides a list of OSWER Directives published through June 1988.
    
          Each  Region also has an OSWER Directive Coordinator.  Consult Appendix A, Regional
          Contacts, for the name and number of the Directives Coordinator in your Region.
    
    3.     Superfund Risk Assessment Information Directory  OSWER Directive 9285.6-1  (202
          pages).  Publication number EPA/540/1-86/061
    
          The directory identifies and describes sources of information  useful in conducting risk
          assessments. The directory covers sources of information to aid in hazard identification,
          dose-response  assessments, exposure assessments, and risk characterization.  Available
          from  CERI (513) 569-7562 or FTS 684-7562.
    
    4.     Annotated Technical Reference for Hazardous Waste Sites
          Contact:  Office of Waste Programs Enforcement (OWPE)
                    FTS 398-8622 or (703) 308-8622
    
          This  reference provides information on  14 common  site  types:   asbestos,  battery
          recycling/lead, dioxins, landfills, metals, mining wastes, mixed waste, multi-source ground
          water, munitions, PCBs, pesticides, plating, solvents, and wood preserving. Information
          includes ARARs, risk assessments,  and  summaries  of typical site characteristics. The
          reference provides access to technical expertise through lists of Regional technical experts
          and technical references. The current version is considered a draft and is being updated.
    
    5.     CERCLA  Administrative  Records:  Compendium of  Frequently  Used  Guidance
          Documents in Selecting Response Actions
          Contact:  Office of Waste Programs Enforcement (OWPE)
                    CERCLA Guidance and Oversight Branch FTS 475-6770 or (202) 475-6770
                    or Regional Administrative Records Coordinator
    
          This  reference (sent to  Regions May 22, 1989) serves as a central library of guidance
          documents in each Region. This also saves resources by avoiding the need to copy such
          documents for each  administrative record.
                                             16
    

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                                          Publications
    6.     Selected Alternative and Innovative Treatment Technologies for Corrective A ction and
           Site Remediation  Publication Number EPA/540/8-90/003
    
           A bibliography of international surveys, technology survey reports, treatability studies,
           guidance documents, technical support documents, reports on ground water, incineration,
           solidification, biological treatment, physical/chemical treatment, and databases. Available
           from CERI at FTS 684-7562 or (513) 569-7562.
    
    7.     SITE Program Fact Sheet OSWER Directive 9380.1-03FS July 1990 (4 pages)
    
           A concise description of the Superfund Innovative Technology Evaluation (SITE) Program
           including a program overview, highlights and progress, technology transfer activities and
           publications, and Regional contacts. Available from CERI at FTS 684-7562 or (513) 569-
           7562.
                                              17
    

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    Publications
     Notes
        18
    

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                                   Other Sources of Information
                            Other Sources of Information
    1.     National Association of RPMs
           Contact: Steve Veale, EPA Region VI, FTS 255-6715 or (214) 655-6715
    
           NARPM is a professional association representing approximately 400 EPA RPMs.  An
           RPM Directory  listing RPM name, phone, and  professional information  has  been
           published to facilitate technical exchange among Regional staff. The NARPM Executive
           Council has representatives in each Region.
    
           Consult Appendix A,  Regional Contacts, for the  name and number of the NARPM
           Representative in your Region.
    
    2.     National OSC Association
           Contact: Bill Simes, EPA Region V, FTS 886-6236 or (312) 886-6236
    
           This is a professional association for the approximately 130 EPA On-Scene Coordinators.
           A directory listing OSCs by Region and by technical specialty is available by calling Bill
           Simes at the above number.  Consult Appendix A, Regional Contacts, for the name and
           number of the NOSCA Representative in your Region.
    
    3.     Regional Response  and Removal Coordinators
    
           Regional Coordinators for response and removal, located at Headquarters, provide the
           Regions with on-going support from early response and RI/FS scoping through post-ROD
           activities, and provide  a national quality assurance program.
    
           Consult Appendix B, Headquarters Contacts, for the name and number of the Coordinator
           for your Region.
    
    4.     Regional ARARs Coordinators
    
           Regional ARARs Coordinators communicate Regional questions on ARARs issues to
           Headquarters, attend a monthly teleconference  with Headquarters staff, and keep the
           Regions informed on latest national policies.
    
           Consult Appendix A, Regional Office Contacts, for the Coordinator in your Region.
                                            19
    

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                                    Other Sources of Information
    5.      Federal Facilities Coordinators
    
           Federal Facility Coordinators provide policy information and  guidance documents to
           Regional Staff concerned with hazardous waste sites at DOD, DOE, and other Federal
           facilities.
    
           Consult Appendix A, Regional Contacts, for the Federal Facility Coordinator in your
           Region.
    
    6.      Center for Environmental Research Information (CERI)
           Contact: Clarence Clemmons FTS 684-7358 or (513) 569-7358
           Electronic  Bulletin Board: FTS 684-7610 or (513) 569-7610
    
           CERI develops publications, expert systems, and computer-assisted training and conducts
           training seminars in support of EPA programs including Superfund.  CERI operates an
           electronic bulletin board with a database of over 15,000 searchable abstracts of all ORD
           publications.
    
    7.      Hazardous Substance Research Centers (HSRC)
           Contact: Karen Morehouse  FTS 382-5750 or (202) 382-5750
    
           Five university-based centers, each serving a pair of Regions, focus on problems of their
           geographic regions with emphasis in a specific area of research.  The Centers perform
           long-term  and short-term research on all aspects of hazardous  substance generation,
           management, use, transportation, and disposal.  The Centers are committed to technology
           transfer, and are overseen by the Training and Technology Transfer Advisory Committee
           (TTAC).
    
           Regional Contacts and areas of expertise:
    
            • Region Pair 1 & 2.
              Contact:  Patricia Meany  FTS  835-3355 or (617) 565-3355
              Emphasis:  ground-water remediation, pretreatment of industrial wastes, incineration
              Universities:   New  Jersey  Institute of Technology,  Massachusetts  Institute of
              Technology,  Princeton  University, Rutgers  University,   Stevens  Institute  of
              Technology,  Tufts University,  and University of Medicine and Dentistry of New
              Jersey
    
            • Region Pair 3 & 5.
              Contact:  Harry Harbold FTS 597-9492 or (215) 597-9492
              Emphasis:  biological degradation processes for organic substances
              Universities:   University  of  Michigan, Howard University, and Michigan State
              University
                                              20
    

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                                    Other Sources of Information
            • Region Pair 4 & 6.
              Contact:  Norman Dyer  FTS 255-2252 or (214) 655-2252
              Emphasis:  waste minimization and waste management
              Universities:  North Carolina State University, University of North Carolina-Chapel
              Hill, and Texas A&M University
    
            • Region Pair 7 & 8.
              Contact:  Jerry Anderson FTS 276-7372 or (913) 551-7372
              Emphasis:  metal recovery and recovery of organic wastes
              Universities:  Kansas State University, Montana State University, University of Iowa,
              University  of Missouri, University of  Montana,  University of Nebraska, and
              University of Utah
    
            • Region Pair 9 & 10.
              Contact:  Don White FTS 484-1918 or (415) 744-1918
              Emphasis:  physical,  chemical, and biological treatment of surface and subsurface
              contaminants
              Universities:  Stanford University and Oregon State University
    
    8.     Specialty Area Contacts
    
          Certain technical and programmatic topic areas are of continuing  interest to Regional
          staff.  While the Regional  Coordinators in Appendix  B provide a principal point  of
          contact, OERR has developed a list of Specialty Area Contacts who have more detailed
          knowledge of specific subjects that arise during site cleanup activities.
    
          Consult Appendix B, Headquarters Contacts, for the name and number of the contact for
          your area of interest.
                                              21
    

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    Other Sources of Information
            Notes
                22
    

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                                   Regional Office Contacts
                        APPENDIX A:  Regional Contacts
                                       Region I
         For commercial numbers: FTS 835 = (617) 565 and FTS 833 = (617) 573
    Ground Water Forum Members (p. 4)
    
    
    Engineering Forum Members (p. 4)
    
    
    
    Toxics Integration Coordinator (p. 7)
    
    Air/SF Coordinator (p. 9)
    
    SITE Program Contact (p. 11)
    
    OSWER Directives Coordinator (p. 16)
    
    NARPM Representative (p. 19)
    
    NOSCA Representative (p. 19)
    
    ARARs Coordinator (p. 19)
    
    
    
    Federal Facility Coordinator (p. 20)
    
    Hazardous Substance Research Center
    Contact (p. 20)
    Steve Mangion
    Dick Willey
    
    Yoon-Jean Choi
    Michael Jasinski
    Lynne Fratus
    
    Sarah Levinson
    
    Rose Toscano
    
    Diana King
    
    Francine Picardo
    
    Lynne Fratus
    
    Paul Groulx
    
    Dennis  Huebner
    Dick Boynton
    Bill Walsh-Roglaski
    
    Clara Chow
    
    Patricia Meany
    FTS 833-1718
    FTS 833-1639
    
    FTS 833-9633
    FTS 833-5786
    FTS 833-9634
    
    FTS 833-1504
    
    FTS 835-3280
    
    FTS 833-1676
    
    FTS 833-1700
    
    FTS 833-9634
    
    (617) 860-4300
    
    (617) 573-9610
    FTS 833-9631
    FTS 833-1334
    
    FTS 835-3287
    
    FTS 835-3355
                                           23
    

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                                   Regional Office Contacts
                                       Region II
          For commercial numbers:  FTS 264 = (212) 264, FTS 835 = (617) 565,
                                and FTS 340 - (201) 321
    Ground Water Forum Members (p. 4)
    
    
    
    Engineering Forum Members (p. 4)
    
    
    Toxics Integration Coordinator (p. 7)
    
    Air/SF Coordinator (p. 9)
    
    SITE Program Contact (p. 11)
    
    OSWER Directives Coordinator (p. 16)
    
    NARPM Representative (p. 19)
    
    NOSCA Representative (p. 19)
    
    ARARs Coordinator (p. 19)
    
    Federal Facility Coordinator (p. 20)
    
    Hazardous Substance Research Center
    Contact (p. 20)
    Kevin Willis
    Frederick Luckey
    Alison Hess
    
    Richard Kaplan
    Agram Fayon
    
    Peter Grevatt
    
    Grace Musumeci
    
    Peter D. Moss
    
    Leslie Peterson
    
    Damian Duda
    
    Douglas Kodama
    
    Vince Pitruzzello
    
    Robert Hargrove
    
    Patricia Meany
    FTS 264-1784
    FTS 264-6786
    FTS 264-6040
    
    FTS 264-3819
    FTS 264-4706
    
    FTS 264-8775
    
    FTS 264-2517
    
    FTS 264-4703
    
    FTS 264-9251
    
    FTS 264-9589
    
    FTS 340-6905
    
    FTS 264-3984
    
    FTS 264-1892
    
    FTS 835-3355
                                           24
    

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                                   Regional Office Contacts
                                      Region III
                     For commercial numbers:  FTS 597 = (215) 597
    Ground Water Forum Members (p. 4)
    
    
    Engineering Forum Members (p. 4)
    
    Toxics Integration Coordinator (p. 7)
    
    Air/SF Coordinator (p. 9)
    
    SITE Program Contact (p. 11)
    
    OSWER Directives Coordinator (p.  16)
    
    NARPM Representative (p. 19)
    
    NOSCA Representative (p. 19)
    
    ARARs Coordinator (p. 19)
    
    
    Federal Facility Coordinator (p. 20)
    
    Hazardous Substance Research Center
    Contact (p. 20)
    Kathy Davies
    Phil Rotstein
    
    Paul Leonard
    
    Richard Brunker
    
    Donna Abrams
    
    Paul Leonard
    
    Donna Sutsko
    
    Terry Stilman
    
    David Wright
    
    Bonita Guy Gross
    Marty Powell
    
    Lorraine Urbiet
    
    Harry  Harbold
    FTS 597-6488
    FTS 597-8185
    
    FTS 597-1286
    
    FTS 597-0804
    
    FTS 597-9134
    
    FTS 597-1286
    
    FTS 597-6182
    
    FTS 597-0984
    
    FTS 597-7915
    
    FTS 597-9023
    FTS 597-8170
    
    FTS 597-9302
    
    FTS 597-9492
                                           25
    

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                                   Regional Office Contacts
                                      Region IV
         For commercial numbers: FTS 257 = (404) 347 and FTS 255 = (214) 655
    Ground Water Forum Members (p. 4)     (vaqaat)
    Engineering Forum Members (p. 4)
    
    
    Toxics Integration Coordinator (p. 7)
    
    Superfund Technical Liaison (p. 8)
    
    Air/SF Coordinator (p. 9)
    
    SITE Program Contact (p. 11)
    
    OSWER Directives Coordinator (p. 16)
    
    NARPM Representative (p. 19)
    
    NOSCA Representative (p. 19)
    
    ARARs Coordinator (p. 19)
    
    Federal Facility Coordinator (p. 20)
    
    Hazardous Substance Research Center
    Contact (p. 20)
    JimOrban
    Jon Bornholm
    
    Elmer Akin
    
    John Risher
    
    Stuart Perry
    
    Elmer Akin
    
    Rose Gray
    
    David Abbott
    
    Arthur Smith
    
    Jim Orban
    
    Art Linton
    
    Norman Dyer
    FTS 257-2643
    FTS 257-7791
    
    FTS 257-1586
    
    FTS 257-1586
    
    FTS 257-2864
    
    FTS 257-1586
    
    FTS 257-3454
    
    FTS 257-2643
    
    FTS 257-3931
    
    FTS 257-2643
    
    FTS 257-3776
    
    FTS 255-2252
                                           26
    

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                                   Regional Office Contacts
                                       Region V
          For commercial numbers:  FTS 886 = (312) 886, FTS 353 = (312) 353,
                                and FTS 597 = (215) 597
    Ground Water Forum Members (p. 4)
    
    
    Engineering Forum Members (p. 4)
    
    
    Toxics Integration Coordinator (p. 7)
    
    Air/SF Coordinator (p. 9)
    
    SITE Program Contact (p. 11)
    
    OSWER Directives Coordinator (p.  16)
    
    NARPM Representative (p. 19)
    
    NOSCA Representative (p. 19)
    
    ARARs Coordinator (p. 19)
    
    
    
    Federal Facility Coordinator (p. 20)
    
    Hazardous Substance Research Center
    Contact (p. 20)
    Doug Yeskis
    Luanne Vanderpool
    
    Anthony Holoska
    Kaushal Khanna
    
    Steve Ostrodka
    
    Xuan-Mai Trang
    
    Steve Ostrodka
    
    Denise Reape
    
    Ken Tindall
    
    Leonard Zintak
    
    Jon Dikinis
    Judy Kleiman
    Jim Mayka
    
    Elmer Shannon
    
    Harry Harbold
    FTS 886-0408
    FTS 353-9296
    
    FTS 886-7503
    FTS 886-3011
    
    FTS 886-3011
    
    FTS 886-6043
    
    FTS 886-3011
    
    FTS 353-8987
    
    FTS 886-9895
    
    FTS 886-1961
    
    FTS 886-7572
    FTS 886-1482
    FTS 353-9229
    
    FTS 886-7342
    
    FTS 597-9492
                                           27
    

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                                   Regional Office Contacts
                                      Region VI
                     For commercial numbers: FTS 255 = (214) 655
    Ground Water Forum Members (p. 4)
    
    Engineering Forum Member (p. 4)
    
    
    Toxics Integration Coordinator (p. 7)
    
    Air/SF Coordinator (p. 9)
    
    SITE Program Contact (p. 11)
    
    OSWER Directives Coordinator (p. 16)
    
    NARPM Representative (p. 19)
    
    NOSCA Representative (p. 19)
    
    ARARs Coordinator (p. 19)
    
    Federal Facility Coordinator (p. 20)
    
    Hazardous Substance Research Center
    Contact (p. 20)
    Ruth Izraeli
    
    Deborah Griswold
    Sherry Fuerst
    
    Jon Rauscher
    
    Mark Hansen
    
    Sherry Fuerst
    
    Helen Newman
    
    Steve Veale
    
    Craig Carlton
    
    Sherry Fuerst
    
    Jim Highland
    
    Norman Dyer
    FTS 255-6735
    
    FTS 255-6715
    FTS 255-2198
    
    FTS 255-2198
    
    FTS 255-7223
    
    FTS 255-2197
    
    FTS 255-6720
    
    FTS 255-6715
    
    FTS 255-2270
    
    FTS 255-2197
    
    FTS 225-2260
    
    FTS 255-2252
                                           28
    

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                                   Regional Office Contacts
                                      Region VII
         For commercial numbers: FTS 757 = (913) 236 and FTS 276 = (913) 551
    Ground Water Forum Members (p. 4)
    
    Engineering Forum Members (p. 4)
    
    Toxics Integration Coordinator (p. 7)
    
    Air/SF Coordinator (p. 9)
    
    SITE Program Contact (p. 11)
    
    OSWER Directives Coordinator (p. 16)
    
    NARPM Representative (p. 19)
    
    NOSCA Representative (p. 19)
    
    ARARs Coordinator (p. 19)
    
    Federal Facility Coordinator (p. 20)
    
    Hazardous Substance Research Center
    Contact (p. 20)
    Steve Kinser
    
    Steve Kovac
    
    Dave Crawford
    
    Wayne Kaiser
    
    Dana Trugley
    
    Barry Thierer
    
    Steve Kovac
    
    George Hess
    
    Bob Feild
    
    Craig Burnstein
    
    Jerry Anderson
    FTS 276-7728
    
    FTS 276-7698
    
    FTS 276-7702
    
    FTS 276-7603
    
    FTS 276-7705
    
    FTS 276-7515
    
    FTS 276-7698
    
    FTS 757-3888
    
    FTS 276-7697
    
    FTS 276-7688
    
    FTS 276-7372
                                           29
    

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                                   Regional Office Contacts
                                     Region VIII
          For commercial numbers:  FTS 330 = (303) 294, FTS 564 = (303) 293,
                                and FTS 276 = (913) 551
    Ground Water Forum Members (p. 4)
    
    
    Engineering Forum Members (p. 4)
    
    
    Toxics Integration Coordinator (p. 7)
    
    Superfund Technical Liaison (p. 8)
    
    Air/SF Coordinator (p. 9)
    
    SITE Program Contact (p. 11)
    
    OSWER Directives Coordinator (p.  16)
    
    NARPM Representative (p. 19)
    
    NOSCA Representative (p. 19)
    
    ARARs Coordinator (p. 19)
    
    Federal Facility Coordinator (p. 20)
    
    Hazardous Substance Research Center
    Contact (p. 20)
    Paul Osbome
    Darcy Campbell
    
    Henry Schroeder
    Gerry Snyder
    
    Chris Weis
    
    Bob Stone
    
    Norm Huey
    
    Gerry Snyder
    
    Carol Macy
    
    Tim Rehder
    
    Pete Stevenson
    
    Jonah S taller
    
    Elmer Chenault
    
    Jerry Anderson
    FTS 330-1418
    FTS 330-7596
    
    FTS 330-7074
    FTS 564-7504
    
    FTS 330-7655
    
    FTS 330-7597
    
    FTS 330-1760
    
    FTS 564-7504
    
    FTS 330-7038
    
    FTS 330-1529
    
    FTS 330-7064
    
    FTS 330-7548
    
    FTS 330-1644
    
    FTS 276-7372
                                           30
    

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                                   Regional Office Contacts
                                      Region IX
         For commercial numbers: FTS 556 = (415) 556 and FTS 484 = (415) 744
    Ground Water Forum Members (p. 4)
    
    
    Engineering Forum Members (p. 4)
    
    Toxics Integration Coordinator (p. 7)
    
    Air/SF Coordinator (p. 9)
    
    SITE Program Contact (p. 11)
    
    OSWER Directives Coordinator (p.  16)
    
    NARPM Representative (p. 19)
    
    
    NOSCA Representative (p. 19)
    
    ARARs Coordinator (p. 19)
    
    Federal Facility Coordinator (p. 20)
    
    Hazardous Substance Research Center
    Contact (p. 20)
    Herb Levine
    Richard Frietas
    
    Ken Erickson
    
    Gerald Hiatt
    
    Mike Stenberg
    
    John B levins
    
    Deborra Samuels
    
    Alisa Greene
    Mike Montgomery
    
    Brad Shipley
    
    Jean Rice
    
    Rachel Dagovitz
    
    Don White
    FTS 484-1914
    FTS 484-1914
    
    FTS 484-1067
    
    FTS 484-1730
    
    FTS 556-5271
    
    FTS 484-9103
    
    FTS 556-6596
    
    FTS 484-1890
    FTS 484-1996
    
    FTS 484-1026
    
    FTS 556-5895
    
    FTS 556-5102
    
    FTS 484-1918
                                           31
    

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                                   Regional Office Contacts
                                       Region X
         For commercial numbers: FTS 399 = (206) 442 and FTS 484 = (415) 744
    Ground Water Forum Members (p. 4)     Rene Fuentes
                                         Bernard Zavala
    Engineering Forum Members (p. 4)
    
    
    Toxics Integration Coordinator (p. 7)
    
    Air/SF Coordinator (p. 9)
    
    SITE Program Contact (p. 11)
    
    OSWER Directives Coordinator (p. 16)
    
    NARPM Representative (p. 19)
    
    NOSCA Representative (p. 19)
    
    ARARs Coordinator (p. 19)
    
    Federal Facility Coordinators (p. 20)
    
    Hazardous Substance Research Center
    Contact (p. 20)
    John Barich
    Bob Stamnes
    
    Patricia Cirone
    
    Elizabeth Waddell
    
    John Barich
    
    Jayne Carlin
    
    Kathy Davidson
    
    John Sainsbury
    
    Kathy Davidson
    
    Clark Smith
    
    Don White
    FTS 399-1599
    FTS 399-1562
    
    FTS 399-8562
    FTS 399-8562
    
    FTS 399-1597
    
    FTS 399-8578
    
    FTS 399-8562
    
    FTS 399-2852
    
    FTS 399-1088
    
    FTS 399-1263
    
    FTS 399-1088
    
    FTS 399-1327
    
    FTS 484-1918
                                            32
    

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                          Headquarters Contacts
            APPENDIX B:  Headquarters Contacts
    
    For commercial numbers, FTS 382 = (202) 382, FTS 475 = (202) 475,
                       and FTS 398 = (703) 308
                   Fund Lead:  RI/FS and ROD
    
             Region         Name                     FTS No.
             I              Jennifer Haley              398-8363
             H             Alison Barry               398-8366
             m             Sharon Erey                398-8367
             IV             Tish Zimmerman            398-8370
             V             Andrea McLaughlin          398-8365
                            Sandra Panetta              398-8364
             VI             Robin Anderson             398-8371
             VH            Tish Zimmerman            398-8370
             Vm           Steve Golian               398-8360
             IX             David Cooper               398-8361
             X             Steve Golian               398-8360
      Fund Lead: Removal and Expedited Response Action
    
             Region         Name                     FTS No.
             I              Terry Eby                  382-7734
             II              Mark Mjoness              382-2206
             III             Gregory Weigel             382-2196
             IV             Gregory Weigel             382-2196
             V              Terri Johnson               382-2205
             VI             Jennifer Maloney            382-2184
             VII            Terri Johnson               382-2205
             VIII           Jennifer Maloney            382-2184
             IV             Terri Johnson               382-2205
             X              Terry Eby                  382-7734
                                 33
    

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                         Headquarters Contacts
                       Enforcement Lead:
    Removal, RI/FS, ROD, RD/RA, Negotiations, Litigation
    
            Region          Name                     FTS No.
    
            I               Tai Ming Chang            475-8259
            H              Bruce Kulpan              475-7283
                            Lance Elson                382-5617
            ffl              Deborah Pernice            382-2016
                            Kathryn Boyle              475-9317
            IV              Neilima Senjalia            475-7027
                            Darlene Boerlage            382-4819
            V              Kurt Lamber               382-4848
                            Ernie Watkins              382-4837
                            Irish Gowland              382-7790
            VI              Filomena Chau              475-7082
                            Debby Swichkow            475-7026
            VII             Jack Schad                382-4831
            VIII             Joe Tieger                 475-8372
                            Lori Boughton              382-7789
            IX              Ross Natoli                382-2063
                            Rick Popino                382-3401
            X              Joe Tieger                 475-8372
    Fund and Enforcement Lead:  Design and Construction
    
            Region          Name                      FTS No.
    
            I               JoAnn Griffith               398-8353
            II              Joe Cocalis                 398-8356
            III              Bill Zobel                  398-8354
            IV              Ken Skahn                  398-8355
            V              Tracy Loy                  398-8349
            VI              Ed Hanlon                  398-8352
            VII             Ken Skahn                  398-8355
            VIII            Ben Hamm                 398-8347
            IX              Ed Hanlon                  398-8352
            X              Ed Hanlon                  398-8352
                                34
    

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                              Headquarters Contacts
                         Specialty Area Contacts
    
                                      Name
                           FTSNo.
    ARARS (Application of)
    ARARS (Land Disposal
    Restrictions)
    ARARS (Delisting, No migration)
    ASTSWMO
    Bureau of Reclamation, ARCS
    (Change orders, A/E Liability)
    Community Relations
    Completion/Deletion
    Cooperative Agreements, SSCs,
    Core programs
    CORA Model
    Corps of Engineers
    Design of Containment Remedies
    Five Year Reviews
    Ground Water Remediation
    Health and Safety
    Incineration
    Indemnification (State Contractors)
    Indemnification (ARCs, REM)
    Indian Issues
    Labor Rates/Cost Estimates
    Mining
    Multisource Ground Water
    Municipal Landfills
    Natural Resource Damage
    PCBs
    Preauthorization/Claims
    PRP Oversight for RD/RA
    Real Estate
    Risk Assessment
    Selection of Remedy
    Soil/Ground Water Modeling
    Technical Assistance Grants (TAG)
    Treatability  Studies
    Rhea Cohen
    Steve Golian
    
    Sharon Frey
    Ann McDonough
    Tracy Loy
    
    Melissa Shapiro
    Chris Watling
    Jan Baker
    
    Kirby Biggs
    Bill Zobel
    Ken Skahn
    Bill Ross
    Jennifer Haley
    Joe Cocalis
    Robin Anderson
    Hugo Fleischman
    Ben Hamm
    Jan Baker
    Tom Whalen
    Steve Golian
    Deborah McKie
    Sue Cange
    Bill Ross
    Jennifer Haley
    Bill Ross
    Ed Hanlon
    JoAnn Griffith
    Bruce Means
    David Cooper
    Alison Barry
    Linda Ross
    Robin Anderson
    382-2182
    398-8360
    
    398-8367
    398-8339
    398-8349
    
    398-8340
    398-8348
    398-8328
    
    475-9756
    398-8354
    398-8355
    398-8335
    398-8363
    398-8356
    398-8371
    398-8336
    398-8347
    398-8328
    398-8345
    398-8360
    398-8372
    398-8362
    398-8335
    398-8363
    398-8335
    398-8352
    398-8353
    382-2201
    398-8361
    398-8366
    398-8342
    398-8371
                                     35
    

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                                      Headquarters Contacts
                                       Suggestions
    
    If your favorite sources of technical information are not in this directory, or if you are often
    in need of information and don't know how to find it, please make a note on this page,  tear it
    out, fold and tape it to show the pre-printed address label, add postage, and drop it in the
    mail.
    
    Please also use this form to alert us to any names or numbers in this directory that you know
    are out of date. Thank you.
                                              37
    

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     fold here
                       Richard Steimle
                       Technology Innovation Office (OS-110)
                       U.S. Environmental Protection Agency
                       401 M Street, SW
                       Washington, DC 20460
    fold here
                                             38
    

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    11.10
    TREATMENT VENDOR DIRECTORY
                       United States
                       Environmental Protection
                       Agency
                                      Office of Solid Waste
                                      and Emergency Response
                      Technology
                      Innovation
                      Office
      v>EPA    Vendor Information  System
                       for  Innovative  Treatment
                       Technologies (VISITT)
                       Progress  Report-June  1991	
    INTRODUCTION TO VISITT
       The Vendor Information System for Innovative Treat-
    ment Technologies (VISITT) is a new database being devel-
    oped by EPA to provide current information on innovative
    treatment VISITT will contain technology information
    submitted by developers, manufacturers, and suppliers of
    innovative treatment technology equipment  and services.
    The database will provide a means for innovative technology
    vendors to make their products and capabilities known. The
    system is being designed for hazardous waste cleanup pro-
    fessionals to learn about the applications and performance of
    these new technologies.
    
    TECHNOLOGIES INCLUDED
       VISITT will contain information on vendors of innova-
    tive technologies to treat soils, sludges, sediments, and
    ground water in situ. Examples of technologies included are
    soil washing, thermal desorption, bioremediation, solvent
    extraction, and in situ vitrification. The database will not
    include more established technologies—incineration, so-
    lidification/stabilization, and pump-and-treat ground water.
    Technologies may be at bench, pilot, or full scale.
    
    INFORMATION INCLUDED
       Each vendor file in VISITT will include company infor-
    mation (company name, address, contacts, and phone num-
    ber), a technology description, technology advantages and
    limitations, and applicable media, wastes, and contaminants.
    The vendor may provide additional information on technolo-
    gies at the pilot or full scale, including:
        Performance data
        Waste limitations
        Unit costs and factors impacting cost
        Available hardware/capacity
        Project names and contacts
        Permits obtained
        Treatability study capabilities
        References
                                      FEATURES OF VISITT
                                                         Some of the features VISITT will
                                                       offer include the ability to:
                                                       • Enter a waste description to iden-
                                                       tify innovative technologies that treat
                                                       such wastes
                                                       • Enter a specific technology to
                                                       identify available vendors
                                                       • Enter a site name to locate any
                                                       vendors that may have conducted
                                                       treatability studies or cleanups at that
                                                       site
                                      •  View the information on the screen
                                      •  Print complete vendor/technology information
    
                                      STATUS
                                       EPA is now accepting information from technology com-
                                      panies to be included in the database. EPA will advertise the
                                      information request in the  U.S. Commerce Department's
                                      Commerce Business Daily, trade journals, and conferences.
                                      The first release of the database is scheduled for early 1992.
                                      VISITT will be updated at least annually.
    
                                      HOW TO SUBMIT TECHNOLOGY INFORMATION
                                       The Vendor Information Form is now available to treat-
                                      ment vendors who would like to be included in VISITT.
                                      Information submitted to EPA by September 30,1991 will be
                                      considered for inclusion in the first release of VISITT in early
                                      1992.
                                       The Vendor Information Form (EPA/540/2-91/011) is
                                      available from EPA/ORD Publications at (513) 569-7562.
    
                                      HOW TO RECEIVE THE VISITT DATABASE
                                       If you would like to order VISITT when it becomes
                                     available, complete the form below and send to:
    
                                               VISITT Database
                                               PRC Environmental Management, Inc.
                                               1505 Planning Research Drive
                                               McLean, VA 22102
     Please place me on the mailing list to receive information on the Vendor Information System for Innovative Treatment
     Technologies (VISITT) when it becomes available.
    Name.
    Address.
                              Company.
    
                              Cty	
    .State.
    .Zip Code.
                                             11-30
    

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           11.11           DEVELOPMENT OF AN ALTERNATIVE TREATMENT TECHNOLOGY DATA
                           BASE AND INFORMATION CENTER
    
                          Development Of  An Alternative Treatment
                      Technology Data  Base And  Information  Center
    
                                                       William Sproat
                                                      James Pennington
                                                  Technical  Resources,  Inc.
                                                     Rockville,  Maryland
                                                      Michael Mastracci
                                                         Myles  Morse
                                           U.S.  Environmental Protection Agency
                                                       Washington,  D.C.
    ABSTRACT
      The U.S. EPAs Office of Research and Development (ORD), sup-
    ported by Technical Resources. Inc.. (TRD of Rockville. Maryland.
    has created the Alternative Treatment Technology Information Center
    (ATTIC). ATTIC is a comprehensive, automated information retrieval
    system that integrates hazardous waste data into a centralized, searcha-
    ble resource. The intent of ATTIC is provide the user community with
    technical data and information on available innovative treatment tech-
    nologies and to serve as an initial decision support system. Since AT-
    TIC functions as a focal  point for users, it facilitates the sharing of
    information within the user community and creates an effective  net-
    work of individuals and organizations involved in hazardous waste site
    remediation.
    
    INTRODUCTION
      Since August 1987. the U.S. EPAs Office of Environmental Engineer-
    ing and Technology Demonstration (OEETD) and Office of Solid Waste
    and Emergent}  Response (OSWER) have been testing a prototype
    clearinghouse for information on alternative treatment technologies for
    hazardous waste.  This clearinghouse which is mandated by SARA Sec-
    tion 209 fb>(8>. is the primary technology transfer mechanism for dis-
    seminating information concerning the Superfund Innovative Technology
    Evaluation (SITE) program. This clearinghouse mechanism has evolved
    into the Alternative Treatment Technology Information Center (ATTIC).
    » comprehensive  computer-based information retrieval system that pro-
    vides data and technical information on alternative methods of hazardous
    waste treatment.
      The information contained in ATTIC consists of a wide variety of
    data obtained from Federal and state agencies.  The core of the ATTIC
    s\stem  is the ATTIC Data Base which contains abstracts and executive
    summaries from  over 1200 technical documents and reports.  Informa-
    tion in  the ATTIC Data Base has  been obtained from the following
    sources
    •  The  Superfund Innovative Technology Evaluation (SITE) Program
    •  California Summarv of Treatment Technology Demonstration Projects
    •  Data Collected for the Summary of Treatment  Technology Effec-
       tiveness for Contaminated Soil
    •  NATO International Data
    •  Innovative Technologies Program Data
    •  Removal Sites Technologies Data
    •  RCRA Dehstmg Actions
    •  ISATHAMA  Installation Restoration and Hazardous Waste Control
       Technologies
              of Decision (RODS from 1988 on)
                 Studies
    In addition, the ATTIC system contains resident data bases that have
    been previously developed, as well as access to on-line commercial
    data bases. The ATTIC resident data bases include
       RREL Water Treatabary Database
       RSKERL Soil Transport and Fate Database
       EPA Library Hazardous Waste Collection
       ORD Technical Assistance Directory
       Cost of Remedial Action (CORA)  Model
       Geophysics Advisor Expert System
       On-line Resources
        - Computerized On-Line Information System  (COLIS)
        - OSWER Bulletin Board
        - Diaicom
        - NTIS
        - RODS Data Base
    
    DISCUSSION
      Conceptual development of the ATTIC system began in February 1988
    with a senes of meetings between TRI and OEETD staff in Washing-
    ton. D.C. Since the basic concept of the ATTIC system was to prov ide
    support and assistance to the Regional Offices, input was solicited from
    various Regions and states, in particular Region 3. to determine the
    type and kind of information that would be most useful to the Regional
    staff. Based on his input, a prototype version of the ATTIC system was
    developed in Aug.. 1988 and demonstrated to OEETD staff and to staff
    members in Region 3. Following subsequent modifications, data emr>
    began in Dec. 1988. After a sufficient number of technical documents
    were collected, evaluated and abstracted, the ATTIC system was present-
    ed to Region 3 for data (pilot) testing in Apnl  1989
      The beta test of the ATTIC system took place in the Hazardous Waste
    Management Division (HWMD) in Region ID.' The beta test was con-
    sidered a success and the  HWMD ATTIC users were unanimous in
    their opinion that the system was extremely useful because the infor-
    mation contained was current and of  high  qualitv
      Following the beta test. TRI and OEETD  felt that the ATTIC svstem
    was in a position to  become operational on a limited basis On Mav
    8. 1988. the ATTIC system became operational and the user communi-
    tv could access the system through the svstem operator  The ATTIC
    system was designed to provide information on hazardou* waste treat-
    ment to a user communuv  made up of  the U S EPA Headquarters and
    Regional staff, participating state environmental agencies and the numer-
    ous remediation contractors. The system operator would work * ith the
    individual user to determine the type of information desired and tailor
    the search with specific key words using standard boolean logic W'hen
    a search had been completed, abstracts of  all reports identified were
     410   HAZARDOUS MATERIAL TREATMENT
                        Presented at the 7th Annual Conftrenc* on Hazardous Wute and Hazardous Materials. May 4.
                        1990. St. Louis, MO.
                                                             11-31
    

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      submitted 10 the user through any one of several  methods including
      fax and overnight mail  The user could then determine from the ab-
      stracts  which documents would be most applicable to the user s infor-
      mation needs
        Since ATTIC became operational, more than 250 requests tor infor-
      mation have been receded by the system operator Approximately if>%
      of the information requests nave been from the L S  EPA regionaJ staff.
      30%  from ARCS contractors and 30"c  tram various other L' S  EPA
      contractors. In June 1989. an alternative  method ror accessing one por-
      tion of the ATTIC system  *as  made available to  the user community
      The ATTIC Data Base component ot the ATTIC system was made avail-
      able in a disk-based format using  5 25- or 3 5-mch diskettes that oper-
      ate on any IBM compatible PC  V« rule the ATTIC Data Base component
      of the ATTIC system is updated vveekjy. the disk-based version of the
      ATTIC Data Base is only updated quarterly Since  the introduction of
      the disk-based version, over 800 copies of the data base have been dis-
      tributed to the user community
       Faced with the logistical  problem of updating 800-plus diskettes ev-
     ery quarter. TRI and OEETD began development of an on-line opera-
     tion for the ATTIC system  On Dec.  1,  1989.  the ATTIC Data Base
     component of the ATTIC system became available to the user commu-
     nity through any modem-equipped IBM-PC compatible machine. Us-
     ing standard communications software, members of the user community
     were then able to access the  ATTIC system, conduct searches and down-
     load technical information  without going through the ATTIC system
     operator. The ATTIC system operator  continued to  be available to
     respond to information requests from members of the user community
     that did not have  communications capabilities or did not wish to con-
     due. their own searches. As other components of the ATTIC system
     became available for use in a multi-user environment, they were  ad-
     ded to the on-line system. In the Tint month of operation, the on-line
     system was accessed by more than  120  users.
       ATTIC has been sucessfully demonstrated in U.S. EPA Regions 1.
     3. 4 and 5 as well as to the respective errvtronmemaJ  agencies in  the
     slates of California. Florida. New York and Washington. In particular.
     ATTIC personnel were invited by the Washington State Department of
     Ecology to participate in their hazardous  waste management retreat on
     Sep. 1989. Response to the ATTIC System has been overwhelming posi-
     tive. All demonstration participants have enthusiastically endorsed AT-
     TIC and expressed the importance of a system which centralizes this
     rype of information and disseminates background materials on  request.
     The ATTIC System has also been referenced in the U.S. EPA Adminis-
     trator's "A Management Review of the Superfund  Program" (general-
     ly referred to as  the 90-day study) as "...a strong step in the right
     direction and EPA  should give priority to supporting  and fully develop-
     ing its capabilities." The Administrator's 90-day study also recommends
     that " . the Agency should establish an information clearinghouse wi-
     thin the Office of Research  and Development containing data, reports
     and  references from  EPA. State and other evaluations of technology
     performance. The  clearinghouse should include a computerized data-
     base that allows access through telephone inquiry on-line computer ac-
    cess, and printed  material."2
      The ATTIC is operated by TRI at their bcility in Rockville. Maryland.
     It is housed in an IBM-PC compatible 386 machine in conjunction with
     a Novell network. The use of the Novell network has created an effec-
     tive  on-line system that allows up to eight user to access the system
    at one time through any modem-equipped PC using  standard commu-
     nication  parameters;. As previously mentioned, the system operator is
    still  available to respond to information requests from the user com-
     munity. However,  users are able to access the ATTIC system and con-
    duct searches of the various resources and download updates at their
    convenience.
     FUTURE CONSIDERATIONS
      The most important area  of development for the  ATTIC  system in
    fiscal year  1990 should be the expansion and updating of the volume
    of information contained within the ATTIC  Data Base. In addition to
    tho  information already obtained to date, new  technical  information
     should be acquired from a variety of new jources irKludirw
     • Defense Logistics Agency
     • RCRA Corrective Actions
     • Department of Energy
     • State Treaubilitv Data
     • Industry Data
     • Regional  Data Bases
    
       Highest priority should be placed on obtaining information jnd Jju
     that have a direct bearing on remediation of hazardous waste sites  E;-
     fons should  also be focused on expanding the information jlreajv
     present in the data base routinely updating this information to ensure
     that ATTIC  is the most up-to-date source of treatment  technolo-
     gy remediation  information  available   These  intormauon >ouues
     include
       SITE Program Data
       USATHAMA Installation and Restoration Activities
       Delistmg Activities
       Records of Decision
       Region 3 Data Base on Treatment Technology
       Treatabihty Studies
    
      Treatabihty studies will receive high priority during fiscal year 1990
    in tight of a recent memorandum from Henry L. Longest. Director of
    the Office of Emergency and Remedial Response,  informing all Su-
    perfund Branch Chiefs that ATTIC is to serve as the source of all treat-
    ability study information in FY  1990.J The ATTIC  Data Base should
    also be expanded to include the site location of each type of remedial
    activity that  is being conducted.
      Another area of consideration for fiscal year 1990 activities include;
    the development of an overall ranking system for the effectiveness ol
    the various treatment technologies stored in the ATTIC Data Base.
      When a request for information has been received by the ATTIC sys
    tern operator and a search has been conducted, a list of reports tha
    satisfy the specific key  words used are generated. Abstracts for each
    of the reports are then provided to the user to determine  which docu-
    ments will be the most applicable to the user's information need. There
    is no distinction made between the tepoited effectiveness of each method
    presented in the reports. For specifics of that detail, the user must read
    the individual documents. The effectiveness of ATTIC could be great-
    ly enhanced if the overall information obtained in a search request could
    be presented in a format thai reflects the effectiveness of the reported
    treatment technology.
      The  proposed next step for ATTIC would be to rank each document
    contained within the system based on the effectiveness of the treatment
    technology employed. In addition, a summary report on the overall types
    of treatment technologies would be provided, ranked according to the
    effectiveness of the technology on the rype of hazardous waste con-
    taminant specified by the user. For example, a user contacts the  AT-
    TIC system with a  request for  information on treating heavy  metal
    sludges that also contain high concentrations of organic solvents. Un-
    der the proposed system. ATTIC would generate a summary report on
    the treatment methods employed to treat heavy metal  wastes and sol-
    vents, discussing the various options available to the user and present-
    ing the most effective type of treatment available. ATTIC would also
    generate a list of documents thai satisfy the specific  key words, but
    would rank these by the effectiveness of method employed. The user
    would then be able to make an informed decision as to die type of treat-
    ment technology that could  be employed at his sue.
      For this search process to be implemented, several key points must
    be understood. First. ATTIC is  not acting as a consultant to the user
    and is not making any recommendations as to the type and kind of treat-
    mem technology that should be employed by the user at a site. Th-
    decision can only be made by the user. Second. ATTIC is basing
    rankings of the reports solely on the basis of the data presented in u
    individual documents. The purpose of the ranking format is to refine
    the available data and present the information to the user m such a way
    at to allow him to make an  informed decision.  Third, this approach
                                                                 11-32
                                                                                         HAZARDOUS MATERIAL TREATMENT
    

    -------
    will allow the user 10 think of treatment technologies as a continuum.
    i.e.. treatment trains, and not as individual isolated units.
    
    CONCLUSION
      Studies have indicated that (he target audiences for (he ATTIC Sys-
    tem is larger than anticipated and includes more users within (he pri-
    vate sector than expected. In particular. ATTIC should be designed to
    provide information on hazardous waste treatment  primarily to (he
    hazardous waste site remediation contractors as well as federal and state
    environmental agencies. Studies have also indicated that new and sig-
    nificant information needs to be incorporated into the ATTIC System
    to achieve a critical mass of technical data. The highest priority, there-
    fore,  should be placed  on obtaining information and data (hat have a
    direct bearing on remediation of hazardous waste sites. Effons should
    also be  focused on expanding the information already present in the
    data base and routinely updating (his information to ensure (hat AT-
    TIC is the most up-to-date source of treatment technology/ remedia-
    tion information available.
      For ATTIC to  meet the  recommendations of (he Administrator s
    90-day study to distribute high-quality technical information, an effec-
    tive on-line computer system needs to be developed that *U1 allow mul-
     tiple users simultaneous access  to the ATTIC  system through jn\
     modem-equipped PC. Users should be able to icces» ihe VTTtC -^-
     (em. conduct searches and download updates as needed   A Astern oper-
     ator should also be available to respond to information request rnim
     (ho*e  members of (he user community who do not have comrr.uniw.j-
     (ions capabilities or opt not to conduct (heir own searches  However.
     (he PC-based network system currently in place should only be consi-
     dered a» an interim step before true on-line operation  is achieved due
     to significant limitations associated with hardware, software, commni-
     cations and general distribution Surveys of (he user community have
     indicated that the application of a true on-line system could greatly  en-
     hance the ability of the ATTIC system to rapidly disseminate technical
    "data and information on alternative treatment technologies
    
     REFERENCES
     I  Corben. C i . Alternative Treatment Tecnnolof\ Information Ctnttr Brta  Test
        Report 
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             11.12
    TECHNOLOGICAL INNOVATION IN HAZARDOUS WASTE REMEDIATION
                                                                   Journal of the
                                                      AIR & WASTE
                                                             Management Association
                                                                                          MARCH  1991
                                                                                          VOLUME 41
                        Technological Innovation  in
                     Hazardous Waste Remediation
                                  Walter W. Kovalick, Jr. and James B. Cummings
                                         U.S. Environmental Protection Agency
                                                Washington, D.C.
     The following is the first in a series of articles on
     various efforts to encourage and support innovation in
     hazardous waste treat meat technologies for sites and
     affected ground water. This article provides a brief
     discussion of the origins of the U.S.  EPA's Office of
     Solid Waste and Emergency Response (OSWER)
     Technology Innovation Office (TIO), its mission, and
     the major initiatives underway or under
     contemplation. Subsequent articles  will provide
     progress reports on these initiatives and other activities
     related to technology innovation by federal and state
     regulators, technology developers, responsible parties,
     the engineering community, and other interested
     parties.
    There is an increasing awareness of the need for diversifica-
    tion in technologies to treat contaminated soil and ground-
    water. The ability of the U.S. Environmental Protection
    Agency (EPA) to achieve their preference for use of treat-
    ment and permanent remedies in the Superfund Amend-
    ments and Reauthorization Act (SARA) depends upon the
    availability of affordable, effective and publicly acceptable
    technologies.
      The Technology Innovation Office (TIO) was established
    pursuant to one of the recommendations in EPA's 90-day
    Management Review of the Superfund Program. The recom-
    mendation arose from a recognition of the need to  have an
    EPA advocate for innovation in the face of many countervail-
    ing forces and priorities. The scope of support for innovation
    encompasses Superfund, RCRA Corrective Action Sites, and
    remediation of leaking underground storage tanks.
      TIO's mission is to stimulate the development and appli-
    cation of innovative treatment technologies, and to remove
    impediments that inhibit the use of such remedies. In partic-
    ular,  TIO efforts are focused on technologies which  lack
    sufficient cost and performance data to allow routine consid-
    eration and selection.
    Cop>rifht 1991—Air 4 Wuu Mtniftmeni Allocution
                                         11-34
                                  The Remediation Universe
    
                                    For those who are unfamiliar with the nature and size of
                                  the hazardous site remediation universe, the numbers are
                                  daunting. More than 1200 sites are listed on the National
                                  Priorities List (NPL)—sites deemed sufficiently hazardous
                                  to warrant utilizing federal resources for clean-up. A larger
                                  number of abandoned sites are being investigated by state
                                  agencies. While  these sites may generally be less contami-
                                  nated than NPL sites, many will require some form of reme-
                                  dial action.
                                    Less well-known, but certainly important, are contami-
                                  nated sites potentially subject to corrective action under the
                                  Resource Conservation and  Recovery Act (RCRA). More
                                  than 4700 facilities in the United States treat, store or dis-
                                  pose of hazardous waste. Although estimates vary, some
                                  3700 RCRA facilities with approximately 64,000 solid waste
                                  management units may need corrective action.
                                    Finally, it is estimated that 15 to 20 percent of the 5 to 7
                                  million underground storage tanks  are leaking across the
                                  United States.
                                    The Department of Energy (DOE) and the Department of
                                  Defense (DOD) are responsible for remediation activities at
                                  their own facilities. According to the General Accounting
                                  Office, DOE ale ne has more than 3500 inactive units requir-
                                  ing environmental cleanup.
                                    The large number of sites  and the large volume of waste
                                  have resulted in staggering estimates for the overall cost of
                                  remediation. Innovative approaches have the promise of re-
                                  ducing costs in addition to improving performance and of-
                                  fering remedies more acceptable to the general public. How-
                                  ever, sheer numbers alone do not tell the whole story. Com-
                                  plex subsurface conditions and complex mixtures of
                                  contaminants (e.g., organics and metals) also demand inno-
                                  vation if we are to be able to clean up some sites at all.
    
                                  Innovation Initiatives
    
                                   TIO serves as the U.S. EPA's Office of Solid Waste  and
                                  Emergency Response (OSWER) interface with the Office of
                                  Research and Development's (ORD) Risk Reduction Engi-
                                  neering Laboratory (RREL)  for the  Superfund Innovative
                                  Technology Evaluation (SITE) program, a statutorily man-
                                  dated program to assist in development and demonstration
                                  of promising remediation technologies. There are more than
                                  75 technologies in the demonstration and emerging technol-
    

    -------
    ogy programs and approximately 30 completed projects. A
    segment of the SITE program is also devoted to developing
    promising field monitoring methods.
      To further facilitate development and application of new
    technologies, TIO is pursuing a number of additional pro-
    jects discussed below.
    •  A Market Assessment Project is underway to profile the
       remediation market retrospectively and over the next
       several yean. The objective  is to provide developers and
       investors with information on the wont site problems so
       that development dollars can be channelled more pro-
       ductively. Site profiles may also help vendors  market
       their technologies to site managers.
    •  A Technology Incubators/Test and Evaluation (T&E)
       Facilities project will evaluate the usefulness of facilities
       that can assist both in development and in evaluation of
       new technologies. Timely, credible treatability testing is
       an important component of remedy selection. Early test-
       ing is particularly important for innovative technologies
       which may lack a proven track record.
    •  A Vendor Identification Database project will compile
       screening level information on  cost and performance
       from vendors and their clients. This information will
       provide a clearinghouse for  companies, consulting engi-
       neers, and state and federal project managers.
    •  The Bioremediation Field  Initiative is a joint effort
       between OSWER and ORD. The program is designed to
       more fully document performance of full-scale applica-
       tions of bioremediation, provide technical assistance for
       treatability studies and field pilot  studies, and enhance
       cross-regional information  transfer on  bioremediation
       projects,
    •  Identifying and  Removing Regulatory Impediments is
       an ongoing function of TIO.  The same regulatory frame-
       work which essentially establishes  the market for reme-
       dial technologies unfortunately hampers  the develop-
       ment and application of innovative technologies. The
       recently completed RCRA Implementation Study (RIS)
       contains  a number of findings  and recommendations
       regarding these regulatory impacts. Among the findings
       are that:
       1.  COST and timing to obtain a  Research Development
           and Demonstration (RD&D) permit may impede in-
           novation.
       2.  Permit writers-would benefit from additional guid-
           ance in writing permits  for miscellaneous units cov-
           ered by EPA's Subpart X regulations.
       3.  Mobile treatment units intended for use at numer-
           ous sites would benefit from streamlined permitting.
           Such units may currently need to obtain a full haz-
           ardous waste treatment permit at each location.
           This  potentially beneficial concept  is  currently
           caught up in the linkage between permitting and
           requirement* for facility-wide corrective action.
       4.  There is concern that stringent cleanup levels—Best
           Demonstrated Available Technology (BOAT)—be-
           ing developed for soil and debris may delay innova-
           tion.
    Several of these regulatory areas are the subject of continu-
    ing TIO efforts.
    •  Federal Remediation Technologies Roundtable—In co-
       operation with other Federal agencies  that have both
       cleanup problems and technology  demonstration inter-
       ests, TIO is developing joint publication of summarizing
       reports,  individual demonstration projects, and data
       bases  which have information  on innovative technol-
       ogies. Future efforts will focus on  joint or collaborative
       demonstration projects.
    •   Information Dissemination—TIO has compiled a bibli-
        ography of all significant EPA publications on innova-
        tive technologies. In addition, the office issues a periodic
        bulletin, "Tech Trends" dealing with experiences en-
        countered in applying innovative technologies  in the
        field, and is developing more comprehensive  biblio-
        graphic descriptions of the status of innovative technol-
        ogies.
    •   Forum on  Innovative Hazardous Waste  Treatment
        Technologies—TIO has  sponsored  two  international
        conferences and will sponsor a third meeting in Dallas in
        June 1991. International and domestic vendors of inno-
        vative technologies will present papers and posters with
        an emphasis on actual field applications.
    •   Encouraging State  Initiative—The numbers cited
        above regarding the  size of the remediation universe
        indicate that the largest market for remediation technol-
        ogies may be the states. In any event, state regulatory
        requirements and remediation programs will have a ma-
        jor impact on the pace and  extent of innovation. For
        various reasons, states have  been  slow to adopt EPA-
        promulgated innovation support and relief mechanisms
        such as RD&D permits and the 1000kg treatability ex-
        clusion. TIO is working with  a number of interested
        states to explore opportunities  to establish a regulatory
        environment which not only tolerates, but actively en-
        courages innovation.
      In addition to these projects, TIO is exploring avenues to
    more fully engage the nation's consulting engineers, respon-
    sible parties, and professional societies in collaborative in-
    formation snaring, education, and remediation  technology
    demonstration.
      The demand for hazardous waste treatment technologies
    is driven largely, if not totally, by regulatory requirements.
    Financial, technical, and regulatory factors, plus the avail-
    ability of timely, accurate information on performance and
    cost result in a complex and dynamic market for innovation.
    Our understanding of the factors which contribute to uncer-
    tainties for both technology developers and users continue*
    to evolve. TIO has been the beneficiary of valuable input
    from numerous sources in scoping the initiatives undertaken
    to date. Continued feedback from practitioners in both the
    public and  private sector is essential to our ability to  per-
    form our mission.
         Walter W. Kovalick, Jr., Ph.D. is Director of the Technol-
         ry Innovation Office in the U.S. Environmental Protection
                                                         11-35
    

    -------
    11.13
    EXAMPLES OF CONSTITUENTS WITHIN WASTE GROUPS
                               EXAMPLES OF CONSTITUENTS HI THIN HASTE CROUPS
              HAIOCENATEO VOUTUtS
              8rowd1ch1oro*etnan«
              BroMOfon*
              Bronomethane
              Carbon tetrachlorlde
              Ch1orodtb ro»o«ethane
              Chlorobenzene
              Chloro«than«
              Chlorefor*
              Otloroaethane
              Chloropropane
              01 broMM thane
              Cls.l,3-dlchloropropene
              1.1-01chloroethane
              1.2-01chloroethane
              1.1-01chloroethene
              1.2-01chloroetl»ene
              1,2-01chloroprop*n«
              FluorotrlchlorwMtfune
              Methylenc chloride
              1.1.2.2-t(trachloro«than«
              T«tr*chloro«th«n«
              1.1. !-Tr1cMorocth*n«
              1.1.2-Trtchloro«than«
              1,2-Tr*nj-d1cfiloro«th«n«
              Trans-],3-dlchloroproptnc
              !.1,2-tr1chloro-l,2.2-tr1 ftuoroethan*
              Tr1chloro«th«nt
              Vinyl chloride
              Total chlorinated hydrocarbons
              Heiachloroethane
              Olchloromethane
    
              HALOCENATED SEMIVOLATILES
              2-chIorophenol
              2,4-dlchlorophenol
              Hrxachlorocyc topentadt ene
              p-ch!oro-»-cresol
             Pentachlorophenol
              Tetrachlorophenol
             2.<.5-tr»chlorophenoJ
             2.4.6-trlchlorophenol
             Bts-(2-c»)oroethory)Mthan«
             B1s(2-chloroethyl)ether
             Bl5(2-chloroUopropyl)ether
             4-bro«ophenyl phenyl  ether
             4-chloroant11ne
             2-ch1oronapthaIene
             <-chlorophenyl phenylfther
                                      HALOCENATED SEMIVOLATILES (Cont.)
                                      Bt $ (2-chloroethoiy)phthaUte
                                      BU(2-chloroetho»y)eth«r
                                      I,2-bls(2-chloroetho«y)ethane
    
                                      NONHALOCENATEO VOLATILES
                                      Acetone
                                      Acroleln
                                      Acrylonttrlle
                                      Benzene
                                      2-butanone
                                      Carbon dlsulflde
                                      Cyclohexanone
                                      Ethyl acetate
                                      Ethyl ether
                                      Ethyl benzene
                                      2-hexanone
                                      Isobutanol
                                      Hethanol
                                      Methyl Ijobutyl ketone
                                      4-methyI-2-pentanone
                                      n-butyl alcohol
                                      Styrene
                                      Toluene
                                      Trlnethyl benzene
                                      Vinyl acetate
                                      Xylenes
    
                                      KONKALCGENATED SEMIVDLATILES
                                      Benzole add
                                      Cresolj
                                      2.4-dtmethylphenol
                                      2.4-dtnltrophenot
                                      2-methylphenol
                                      4-m«thyI phenol
                                      2-nltrophenol
                                      4-nt trophenol
                                      Phenol
                                      Acenaphthene
                                      Acenapthylene
                                      Anthracene
                                      Benzldlne
                                      Benzo(a)anthracene
                                      Benzo(b)Muoranthene
                                      Benzo{k;fluorinthene
                                      Ben2o(a)pyrene
                                      BenzotjhDperylene
                                      Benzyl alcohol
                                      Bl$(2-ethylhexyl)phthalate
        SOURCE: Bioremediatlon of Hazardous Waste Sites Workshop - Speaker
                   Slide Copies and Supporting Information
                   CERI-89-11
                                               11-36
    

    -------
                      EXAMPLES OF CONSTITUENTS HITHIN HASTE CROUPS (eont)
        HALOCCNATEO SEMIVOLATILES (cent.)
        1 ,2-dlchlorobenzene
        1 ,3-dlchlorobinzeni
        M-dtchlorobenzfni
        3.3-dlchtorobenzldlni
        Heiachlorobenzeni
        Heiachlorobutadltne
        1 .2.4-trlchlorobtnztnt
    
        PESTICIDES
        Aldrln
        flhc-«lph«
        Bhc-beta
        Bhc-4i1ta
        Chlordani
        4.4--000
        4.4--OOE
        4.4'.00t
        Oltldrln
        Endosulftn I
        Endosulftn II
        Endosulftn sulftti
        Endrtn
        Endrln tldchydt
        Ethlon
        AluMlnu*
        Htptachlor
        H«pt*chlor tpoildc
        MtUtMon
        Mcthylpirathlon
        P»r*thlon
        To«*ph«nt
    .NONHALOGENATEO SEMIVOLATIUS (cont)
     4.6-dlnltro-2-Mtthylphcnol
     2.4-dlnltrotoluffit
     2.6-dlnltrotolucnt
     Ot-n-octyl phthaUt*
     I,2-dlphcnylhydrazlnc
     Fluoranthtnt
     Fluortnt
     Indtno(1.2.3-cd)pyrtn«
     Isophoront
     2-«tthy1napth«Un«
     Napthaltnt
     2-nltroantllnt
     3>n It roan Hint
     4-n1troanU1n«
     Nttrobtnztne
     n-nl trosodlMthyl »m\ fit
     n-nltrosodt-n-propyluifnt
     n-nltrosodlphcnylaMlnt
     Phtnanthrcnt
     Pyrtnt
     Pyrldlnt
     2-«*thynaphthalint
     Bis  phthalati
     Phtnyl  napthaltn*
     Ethyl parathlon
     Butyl btnzyl phthalati
     Chryunt
     01bfnzo(a.h)anthraccnt
     Dlbtnzofuran
     Olcthyl phthaUtt
     01 in thy) phthalati
     01-n-butyl phthalati
    
     VOLATILE METALS
     Arsintc
     Bismuth
     Lead
     Mercury
     Tin
     Selenium
    
     OTHER CATEGORIES
     Asbestos
    SOURCE:  Blonmediation of Hazardous Waste Sites Workshop • Speaker
                Slide Copies and Supporting Information
                CERI-89-11
                                            11-37
    

    -------
                         EXAMPLES OF CONSTITUENTS HITHIM MASTE CROUPS (cont)
    
            INORGANIC CORROSIVES                    RADIOACTIVES
            Hydrochloric add                       Radioactive Isotopes of
            NltMc add                               Iodine. barlga. uranlua
            Hydrofluoric »dd                       Radium
            Sulfurlc add                           Ga*»a radioactivity
            Sodium hydroxide
            Caldun hydroilde                       ORGANIC CYANIDES
            Calcium carbonate                       Org«non1tr11«s
            Potasslu* carbonate
            PCBs                                    OXIOIZERS
            PCB (Arochlor)-lOU                     Chlorate*
            PCB (ArochloD-1221                     Chrowtes
            PCB 
    -------
              I V.I 4"
    SELECTING INNOVATIVE TREATMENT TECHNOLOGIES:   A
    PRACTITIONER'S GUIDE
                          Selecting  Innovative Treatment  Technologies:
                                               A Practitioner's  Guide
    
                                                 Walter W.  Kovalick, Jr.  Ph.D.
                                                          John Kingscott
                                                  Technology Innovation Office
                                             U.S. Environmental Protection Agency
                                                          Washington, DC
                                                          Daniel Sullivan
                                                         ICF Incorporated
                                                          Fairfax, Virginia
    ABSTRACT
      The U.S. EPA provides a number of tools for decision-makers who
    must evaluate technologies to remediate contaminated soils and ground-
    water. This paper provides a "road map" to guide the reader through
    the variety of U.S. EPA resources available on innovative treatment
    technologies.
      Some of the available resources include screening guides that assist
    site managers in matching waste types with appropriate technologies;
    a bibliography, entitled Selected Alternative arid Innovative Treatment
    Technologies for Corrective Action and Site Remediation, listing rele-
    vant and current U.S. EPA reports on remedial technologies and how
    to obtain them: the ROD System (RODS) data base, which contains
    information on technologies selected for individual sites; Superfund
    Innovative Technology Evaluation (SITE) reports, which provide per-
    formance data on innovative technology demonstrations; and the Alter-
    native  Treatment Technology Information Clearinghouse (ATTIC),
    which  is a computerized library of treatability studies.
       Additional resources to be available in the near future include infor-
    mation on technologies used at removal and remedial sites and their
    implementation status; an expert system to help  select appropriate
    biological treatment processes for remedial sites;  and an enhancement
    of ATTIC with treatment technology case histories from the Depart-
    ment of Energy, the Department of Defense and the Department of the
    Interior
    
    INTRODUCTION
       SARA mandated the use of permanent remedies at Superfund sites.
    By definition, these remedies reduce the toxicity, mobility and volume
    of contamination. As noted  in the Management Review of the Super-
    fund Program (commonly referred to as the 90-Day Study), decision-
    makers are hesitant to select newly developed or innovative technologies
    for a variety of informational, institutional and economic reasons. The
    Technology Innovation Office (TIO) was created in 1990 within the U.S
    EPA's Office of Solid Waste and  Emergency Response (OSWER) to
    identify and remove impediments to the broader application of innovative
    technologies to hazardous waste remediation. One of TIO's primary
    goals is to assist those who select hazardous waste cleanup technologies
    to identify and use new or innovative technologies when remediating
    contaminated soils and groundwater
      A principal impediment to the use of innovative and alternative treat-
    ment technologies is the lack of up-to-date, objective data with which
    to initially evaluate a technology's performance  and cost. Such data
    must be available early in the remedy screening process in order for
    an innovative technology to be fully considered during the feasibility
    study. In an effort to overcome this particular roadblock, the U.S. EPA
    has created a number of reference sources for use by U.S.  EPA
                                             employees and others. These resources include computerized data bases,
                                             a reference library, numerous publications and the  availability of
                                             dedicated groups of technical experts. Many of these resources are
                                             available to the general public with no user fees.
                                               The purpose of this paper is to publicize  these  computerized,
                                             bibliographic and technical resources,  to encourage their use and to
                                             present a "road map"  or logical approach to their efficient applica-
                                             tion. The "Practitioner's Guide to Identifying Innovative Technologies"
                                                                  EPA Technology Screening Guides
                                                          ATTIC
                                                                   RODS   CODS
                                                Bibliographic
                                                  Search
                                                     Comparing
                                                      Specific
                                                    Technologies
      Abstracts. Summaries. Detailed Reports
    	Books, Records of Decisions	
    
          Blbllognphlc Brochuns:
    Selected Alternatives & Innovative Treatment
        Technologies lor Corrective Action
             & Site Remediation
    
        . Selected Technical Guidance for
             Superfund Projects ,
                                                                       Technical Experts:
               Experienced  Technology
               Peers      Vendors
                        Hazardous Waste
                       Collection Diubite
                                    FOCUSING
                                       IN
                                                           Site
                                                          Specific
                                                         Applications
                                                                      TreataMllty Protocols
                                                                    TreatablUty Study Gut '
           Treatability Assistance
                Program
                                 GETTING
                                 SPECIFIC
                                                                         Figure 1
                                                     Practitioner's Guide to Identifying Innovative Technologies
                                                                  11-39
    

    -------
                                TkWe 1
          US. EPA Screening Guidelines for Treatment Technologies
    
    • Technology Screening Guide for Treatment of CERCLA Soils and Sludges
      EPA/540/2-88/004
    • Treatability Potential  far EPA Listed Hazardous Wastes  in Soil  NTIS
      PB89-166581
    • Treatability totential for 56 EPA Listed Hazardous Wastes in Soil  NTIS
      PB89-1744446
    • Treatability of Hazardous Chemicals in Soils:  Volatile and Semi-Volatile
      Orgaiucs NTIS DE89-016892
    • Bioremediation of Contaminated  Surfece Soil NTIS PB90-164047
    • Treatment Technology Fact Sheets.
          Innovative Technology: Soil Washing
          OSWER Directive 9200 5-250-FS (Fact Sheet)
          Innovative Technology: In-Situ Vitrification
          OSWER Directive 9200.5-251-FS (Fact Sheet)
          Innovative Technology: BEST-TM Solvent  Extraction Process
          OSWER Directive 9200.5-253-FS (Fact Sheet)
          Innovative Technology: Glycolate Dehalogenation
          OSWER Directive 9200.5-254-FS (Fact Sheet)
    (Fig. 1) provides an ordered approach to using the various data bases,
    publication sources and technical experts currently available from the
    U.S. EPA. This Guide can be used as a first step in identifying poten-
    tial technologies that may be applicable to a specific contaminated site,
    as well as serving as a  final check on available cost and performance
    data concerning various innovative remediation technologies that have
    already been identified through other  means.
    
    THE FIRST STEP
      The streamlining of the Superfund remedial program in recent years
    requires the identification of remedial  technologies during the early
    data gathering phases of the RI. During the early identification of
    technologies in the RI. the analyst needs to sift quickly through available
    information and identify what might be worth examining in more detail.
    A similar analysis may be conducted when time permits an engineering
    evaluation prior to a removal action.
      The U S. EPA has prepared several screening documents which sup-
    port an initial assessment of the possible application of technologies
    at sites. These documents (Table 1) provide an overview of potential
    technology use based on physical site characteristics and contaminant
    information. This information will help the analyst begin to identify
    potentially feasible technologies,  to identify interfering waste and/or
    site characteristics and to identify process limitations. The screening
    guides should help focus  attention on important  technical issues and
    help identify key words or phrases for use during computer searches.
    Following this initial screening, data bases may be searched to identify
    useful references.
      The U.S. EPA has created four data  bases that are useful places to
    begin bibliographic technology research: ATTIC,  the Hazardous Waste
    Collection Data Base, RODS and COLIS, The most recently developed
    of these four data bases, and likely the most pertinent to a technology
    search, is ATTIC—the Alternative Treatment Technology Information
    Clearinghouse ATTIC  is the primary technology transfer mechanism
    for disseminating information concerning  the Superfund Innovative
    Technology Evaluation (SITE) program and also contains abstracts and
    executive summaries from more than 1,500 technical documents and
    reports from states, industry,  NATO, DOD, DOE other countries. Super-
    fund RODs and various Superfund treatabiliry studies. ATTIC can be
    accessed through modem-equipped personal computers  or through a
    systems operator. The system is designed to search for key words with
    minimum effort, a site manager can receive short abstracts  and sum-
    manes of possible applicable technologies. Should  these summaries
    seem relevant, full copies of reports can be obtained through  several
    sources including the U.S. EPA Library. Access to the on-line ATTIC
    system is available  through the ATTIC system  operator. Technical
    information requests also  can be made by calling the system operator
    at (301) 816-9153.
       The second data base of potential use during an early technology
     search is the Hazardous Waste Collection Database (HWCD). housed
     within the U.S. EPA Headquarters library. The HWCD. established in
     1986 to support the information needs of the U.S. EPA's Superfund
     office, is a bibliographic data base containing abstracts of U.S. EPA
     and other government agency reports, trade books, policy and guidance
     directives, legislation and regulations concerning hazardous  waste.
     Although the subject matter of HWCD is far more wide-ranging than
     the topic of innovative technologies, it is searchable by subject, reference
     title and key words using a menu. A data base thesaurus is available
     to aid users in designing efficient searches. One may contact Felice
     Sacks, the U.S. EPA Headquarters Head Hazardous Waste Superfund
     Librarian, at (202)  382-5934  for more information concerning the
     HWCD system.
       A third useful data base is the Records Of Decision System (RODS)
     data base. The RODS data base contains the text of the signed Super-
     fund Records of Decision. It facilitates  comparing technologies used
     at sites with similar physical characteristics and waste conditions. The
     data base is menu-driven and provides rapid information searches.  A
     search can be conducted on such fields as site name, remedy, key con-
     taminants or the full text of the ROD. RODS is maintained on the U.S.
     EPA's IBM mainframe computer, which is located in Research Triangle
     Park, North Carolina. The RODS data base is available to the general
     public through the CERCLIS Hotline at (202) 252-0056 or the RODS
     staff at (202) 245-3770.
      The fourth data base of interest is COLJS—the Computerized On-
     Line Information Systems. COLIS is part of the U.S. EPA's Risk Reduc-
     tion Engineering Laboratory's (RREL) Technical Information Exchange.
     Three COLJS data bases are currently in operation:
    
     • Case   History  File:  This  file contains  information  on site
      characteristics, respond methods, costs and cleanup problems related
      to spills, waste sites and underground storage tank management.
     • Library Search System: This subsystem allows free form searching
      through catalog cards and full length abstracts of documents in the
      TIX library. Users may conduct their own literature searches using
      their own key words—they are  not limited to a  standard set of key
      words.
     • SITE Application Analysis Report File: This subsystem allows free
      form  searching of  reports containing cost and performance data
      gathered from the U.S. EPA's SITE demonstration program. The
      reports are on-line  in their entirety.
    
    
      COLIS is accessible through  the ATTIC system, or the system
     operator can be contacted  at (201) 906-6871.
      In addition to data bases services, the U.S. EPA also has prepared
     two brochures that will help identify U.S. EPA documents concerning
     the use of innovative  and alternative remedial technologies.  These
     brochures  are titled Selected Alternative and  Innovative Treatment
     Technologies  for  Corrective  Action  and  Site  Remediation
     (EPA/540/8-90/008, Oct. 1990) and Selected Technical Guidance for
     Superfund Projects (EPA/540/8-89/004, May 1989). Each of these two
     brochures lists more than 70 U.S. EPA documents relating  to Super-
     fund and remedial technolosies. Both of these brochures are available
     free from the U.S. EPA's Center for Environmental Research Informa-
     tion (CERI) at (513) 569-7562.
    
     FOCUSING IN
      Each of these four computerized information sources allows users
     to gather a large number of potentially useful references  in a relatively
     shoo penod of time. The  next step,  therefore, is to pare  down the
     reference  list to those documents truly of interest. The technology
     screening guides listed in Table 1 should be  helpful in this  regard by
     assisting site managers to obtain a sense of the relevancy of individual
     references. The  U.S. EPA and other sources also make  available
    technology-specific  publications  and  technical experts that can be
    consulted for detailed information regarding potentially useful remedia-
    tion technologies.
                                                                  11-40
    

    -------
    Technology Specific Publications
      By using general knowledge of site characteristics and an overview
    of potentially effective  treatment  technologies obtained from the
    screening guides mentioned above, the site manager has at this point
    identified references to  a relatively  small number of remediation
    technologies that are potentially useful. The next step is to locate and
    review documents concerning these technologies  so that these few
    technologies can be compared with each other.
      During the review of screening documents and technical literature,
    the analyst may become aware of important site characteristics which
    will determine the feasibility of some treatment processes. These factors
    may concern the physical or chemical character of the waste and suggest
    the need to promptly gather additional site data. Thus, an iterative pro- -
    cess may develop where additional  site data will be necessary to
    thoroughly assess technologies prior to conducting treatability studies.
    
    Technical Experts
      One of the challenges facing site managers is the need to assess the
    value of an innovative technology for the specific characteristics of a
    site. When reviewing the literature and considering technologies, the
    analyst should  be aware of the  developmental  status of  different
    technologies. By definition, innovative technologies are neither fully
    commercialized nor ready for "off-the-shelf  use. These technologies
    have limited performance and  cost  data  and lack extensive field
    experience. The status of these processes may rapidly change, and new
    information is constantly being generated as demonstration projects and
    treatability  studies  are  completed. Therefore,  especially  for  new
    technologies, personal contact with technical experts, experienced peers
    and technology  vendors  is very important.
      The U.S. EPA's Risk Reduction Engineering Laboratory (RREL) and
    Robert S. Kerr Environmental Research Laboratory (RSKERL) have
    experts  on numerous treatment technologies that can quickly steer a
    site manager to pertinent and relevant information. The U.S. EPA spon-
    sors several programs through each laboratory to provide this type of
    consultation. At the RREL, the  U.S.  EPA  has established:
    • The Engineering and Treatment Technical Support Center
    • The Treatability Assistance Program
    • The Superfund Technical Assistance Response Team
      These three programs offer expertise in contaminant source control
    particularly in: above ground treatment units; materials handling; treat-
    ment of soils, sludge and sediments; and treatment of aqueous and
    organic liquids.  They are intended to serve U.S. EPA  site managers
    primarily, but are available to the public on a limited basis. For further
     information regarding these programs, one can contact Ben Blaney at
     (513) 569-7406.
       Similarly, at the RSKERL, the U.S.  EPA has established a Technical
     Support  Center to  deal with in  situ  biorestoration  of soils  and
    technologies affecting groundwater. For further information concerning
    these programs, one can contact Richard Scoff at (405) 332-8800.
      The U.S. EPA has published reference guides to help identify ongoing
    programs and individuals who are working in specific technical areas.
    These guides are listed in Table 2.  In addition, the SITE program has
    ben actively working with developers of innovative technologies for the
    last 4 yr. The program has a technology transfer effort intended to pro-
    vide support to those in the hazardous waste site remediation community.
    The annual SITE Program brochure lists the U.S. EPA Office of
    Research and Development project managers and their  associated
    technologies of interest. For additional information, one can contact
    John Martin at (513) 569-7758.
      The five Hazardous Substance Research Centers are another source
    of technical expertise  funded by  the  US.  EPA  (Table  3). These
    university-based centers, each of which has established special  rela-
    tions with a pair of U.S. EPA Regions, focus on problems common
    within their geographic regions, with emphasis  on a specific area of
    research. These areas of specialization include groundwater remedia-
    tion, incineration, bioremedian'on, recovery of metals and other physical
    and  chemical treatment of surface and subsurface contaminants. The
    centers perform long- and short-term research on all aspects of hazar-
    dous substance generation, management, treatment and disposal. The
    centers are committed to technology transfer, as well. The activities
    of these centers  are described more fully  in Hazardous  Substance
    Research Center: Annual Report FY1989 (January  1990). For a copy
    of this report or more information regarding these research centers,
    one  can contact Karen Morehouse at (202) 382-5750.
                                 Table 3
             Hazardous Substance Research Centers and Directors
    
    • Dr. Richard Magee, Director
      Hazardous Substance Management Research Center
      New Jersey Institute of Technology
      Newark, New Jersey 07102
      201/596-3233
      Region-Pair VI: CT. MA. ME, NH, NJ, NY, PR, Rl.  VI, VT
    
    • Dr. Walter J. Wsber, Jr
      Dcpl  of Civil Engineering
      2340 C.G. Brown Building
      University of Michigan
      Ann Arbor, Michigan  48109-2125
      313/763-2274
      Region-Pair 3/5  DC, DE, IL, IN, MD, MI, MN, OH, PA, VA, WI,
      WV
    
    • Dr. Michael R. Overcash
      Dept. of Chemical Engineering
      North Carolina State University
      Raleigh. North Carolina 27695-7001
      Region-Pair 4/6: AL, AR, FL, GA.  KY, LA, MS, NM, NC, OK, SC,
      TN, TX
    
    • Dr. Larry E. Enckson
      Dept  of Chemical Engineering
      Durland Hall
      Kansas State University
      Manhattan. Kansas 66506
      913/532-5584
      Region-Pair 7/8: CO, IA, KS, MO, MT, ND, NE, SD.  UT, WY
    
    • Dr. Perry L. McCarty
      Center Director
      Dept. of Civil Engineering
      Stanford University
      Stanford, California 94308
      415/723-4131
      Region-Pair 9/10  AK. American Samoa, AZ, CA, Guam, HI. ID,
      Northern Mariana Islands. NV, OR,  WA
                                 Table 2
                 EPA Reference Guides to Technical Experts
    
    • Groundwater Research- Technical Assistance Directory
      EPA/603/9-89/048
    • Environmental Protection Agency. Office of Research and Development
      Technical Assistance Directory CERJ-88-84
    • ORD Topical Directory EPA/600/9-86/006
    • Technical Support Services for Superfund Site Remediation
      EPA/5413/8-90/011 October  1990
    GETTING SPECIFIC
      After identifying innovative treatment technologies with a potential
    for success at a site, treatability  studies will likely  be necessary to
    ascertain the effectiveness of technologies for the given site conditions
    and waste characteristics. The U.S. EPA provides several services to
    help make this task easier. The most basic are the publications entitled
    Treatability Studies Under CERCLA: An Overview (OSWER Directive
    9380 3-02FS)  and Guide for Conducting Treatability Studies Under
    CERCLA,  Imerrim Final (EPA/540/2-89/058)  These publications
                                                                    11-41
    

    -------
     are available through the Superfuod Docket and CERI, respectively
     (Table 2).
       Through the Risk Reduction Engineering Laboratory, the U.S. EPA
     sponsors the previously mentioned  Treatability Assistance Program.
     This program offers a list of contractors available to perform treatability
     studies, a comprehensive data base  of all aqueous treatability studies
     and brief bulletins describing the applicability of various technologies.
     The Treatability Assistance Program is also in the process of developing
     generic technology specific  treatability study protocols.
    
     CONCLUSION
      The U.S. EPA is assembling a comprehensive set of materials to make
     hazardous waste site  managers aware of the  resources available con-
     cerning innovative remedial technologies and to help steer them toward
     use of innovative  remedial technologies.  A logical approach to use of
     these  materials is:
     • To reference screening guides and assess overall technology potential
     • To conduct a series of comprehensive data base searches
     • To consult available bibliographies
     • To  screen the  computer-generated reference  lists, abstracts and
      bibliographies and obtain  those publications and documents  iden-
      tified as  having direct relevance to the project
    • To contact recognized experts in the field of hazardous waste site
      remediation and engineering
    • To conduct treatability studies using site-specific conditions and wastes
      The Technology Innovation Office continues it's efforts to make more
    technology-specific information available to the hazardous waste site
    remediation community. Future plans call for the development of an
    innovative technology vendor data base, the expansion of the ATTIC
    system to include other data bases (thereby offering one-stop shopping),
    the development of a computerized expert system to assist in the selec-
    tion of appropriate types of biological treatment and an expansion and
    improvement of SITE program information availability.
      A critical factor in the success of the innovative technology informa-
    tion systems is the timeliness of the information it contains.  "Innova-
    tion"  by definition means "new," and all data in the U.S. EPA systems
    need to be continually updated or the system becomes simply one more
    impediment to  using  innovative  technologies. Data  and information
    concerning innovative technologies must be made widely available before
    these  technologies can be fully evaluated and their potentials realized.
      The U.S. EPA's Technical Innovation Office would also like to integrate
    information from outside sources,  such as remediation contractors, other
    federal agencies and private industry, into its various technology transfer
    mechanisms. We have begun an outreach program designed to help col-
    lect and collate  cost and performance data for innovative remediation
    technologies wherever it is available.
    
    DISCLAIMER
      The opinions expressed in this article are those  of the authors, and
    do not necessarily reflect the policy  position of the U.S. EPA.
                                                                         11-42
    

    -------
        11.15
    SEPA
    SURVEY OF MATERIALS - HANDLING TECHNOLOGIES USED AT
    HAZARDOUS WASTE SITES
       United States         Office of Research and      EPA/540/2-91/010
       Environmental Protection    Development         June 1991
       Agency           Washington. DC 20460
       Superfund
       Survey of
       Materials-Handling
       Technologies Used at
       Hazardous Waste Sites
    

    -------
    11.16
    INNOVATIVE TREATMENT TECHNOLOGIES: SEMI-ANNUAL STATUS
    
    REPORT-SUMMARY STATISTICS
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                               TABLE OF CONTENTS
    
    
    
    Section                                                                Page
    
    
    
    
    
    12.0  BIBLIOGRAPHY 	  12-1
    
    
    
          12.J   BIBLIOGRAPHY OF FEDERAL REPORTS AND PUBLICATIONS  	 12-2
    

    -------
    12.0  BIBLIOGRAPHY
      12-1
    

    -------
     12.1
    BIBLIOGRAPHY OF FEDERAL REPORTS AND PUBLICATIONS
    Bibliography of Federal Reports and
    Publications Describing Alternative and
    Innovative Treatment Technologies For
    Corrective Action and Site Remediation
                       Federal
                    Remediation
                    Technologies
                     Roundtable
                                 US Army Corps
                                 of
                    Prepared bv the
               Member Agencies of the
       Federal Remediation Technologies Roundtable
                        12-2
    

    -------
                                          NOTICE
    
    The  information in this document has  been funded  wholly in part by  the United States
    Environmental Protection Agency under Contract 68-CO-0083 and 68-01-7481 to ICF, Inc. It has
    been subject to administrative review by all agencies participating in the Federal Remediation
    Technologies Roundtable, and has been approved for publication.  Mention of trade names or
    commercial products does not constitute endorsement or recommendation  for use.
    

    -------
       Bibliography of Federal Reports and
     Publications Describing Alternative and
     Innovative Treatment Technologies For
     Corrective Action and Site Remediation
    Prepared by the Member Agencies of the
    Federal Remediation Technologies Roundtable:
                        U.S. Environmental Protection Agency
                        Department of Defense
                            U.S. Army
                            U.S. Army Corps of Engineers
                            U.S. Navy
                            U.S. Air Force
                        Department of Energy
                        Department of Interior
                            Bureau of Reclamation
                     Summer 1991
    

    -------
                                 TABLE OF CONTENTS
    A. INTERNATIONAL SURVEYS AND CONFERENCES	   1
          EPA	   1
          DOE  	   1
    
    B. TECHNOLOGY SURVEY REPORTS	   1
          EPA	; -.	   1
          U.S. Army	   3
          DOE  	   3
    
    C. TREATABIUTY STUDIES (General)	   4
          EPA	   4
    
    D. THERMAL PROCESSES	   4
          EPA	   4
          U.S. Army	   4
    
    E. SOLIDIFICATION/STABILIZATION	   5
          EPA	   5
          U.S. Army	   7
          U.S. Navy	.7
          U.S. Air Force	•	   7
          DOE  	.-	   7
    
    F. BIOLOGICAL	   7
          EPA	   7
          U.S. Army	  11
          U.S. Navy 	  11
          U.S. Air Force	  11
          DOE  	  12
    
    G. PHYSICAL/CHEMICAL  	  13
          EPA	  13
          U.S. Army	  15
          U.S. Navy 	  16
          U.S. Air Force	  16
          DOE  	  17
          U.S. Bureau of Reclamation	  18
    
    H. DATABASES	  19
    
    I. DOCUMENT SOURCES  	  21
    

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                                             PREFACE
    
           The Federal Remediation Technologies Roundtable (Roundtabie) developed this
     bibliography to publicize the accessibility of Federal documents pertaining to innovative and
     alternative technologies to treat hazardous wastes.  The bibliography contains references for
     documents and reports from the U.S. Environmental Protection Agency (EPA), the U.S. Army, the
     U.S. Army Corps of Engineers, the U.S. Navy, the U.S. Air Force, the Department of Energy (DOE).
     and the Department of Interior (DOI), Bureau of Reclamation.  The Roundtable obtained this
     reference information from a variety of resources:
    
           •      Publication lists from the Robert S. Kerr Environmental Research Laboratory (EPA),
                  the Oak Ridge National  Laboratory, and the Pacific Northwest National Laboratory
                  (DOE);
    
           •      Federal Agency report, project and publication lists from EPA, the Naval Civil
                  Engineering Laboratory, the U.S. Army Toxic and Hazardous Materials Agency, the
                  Air Force Engineering and Sciences Center, and the U.S. Department of Defense
                  (DoD); and
    
           •      National Technical Information Service (NTIS), DOE, Enviroline, and other database
                  searches.
    
           This bibliography addresses technologies which provide for the treatment of hazardous
    wastes; therefore, it does not contain information or references for containment or other non-
    treatment strategies, such as landfilling and capping. Although there are some references for
    more conventional treatment technologies, such as incineration and solidification, the main focus
    of this bibliography is on innovative technologies for which detailed cost and performance data
    are not available.
    
           In addition to improving access to information on innovative technologies, the Roundtable
    hopes this bibliography will assist in  the coordination of ongoing research initiatives, and increase
    the development and implementation of these innovative technologies for corrective action and
    site remediation. This bibliography is intended to serve as a starting point in your pursuit of
    information on innovative alternative  hazardous waste treatment technologies and should  not be
    considered the sole source for this type of information.  At the end of this document (see  page
    21), you will find instructions  for ordering publications you may be interested in.
    
           This bibliography is scheduled to undergo periodic revisions.  Therefore, if your Agency
    has produced any publications on innovative remediation technologies that should be included in
    future versions of this bibliography, or if you have any suggestions for improving this document,
    please complete the suggestion form on page 23, or contact the EPA Technology Innovation
    Office:
    
                              Daniel Powell
                              Environmental Protection Specialist
                              Technology Innovation Office
                              U.S. Environmental Protection Agency
                              401 M Street, SW. OS-110
                              Washington, D.C. 20460
    

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                         A. INTERNATIONAL SURVEYS AND CONFERENCES
    
    EPA
    
    o      Assessment of International Technologies for Superfuna Applications: Technology Review and
           Trip Report Results.
           EPA/540/2-88/003
    
    o      Assessment of International Technologies for Supertund Applications: Technology Identification
           and Selection.'
           EPA/600/2-89/017
    
    o      Forum on Innovative Hazardous Waste Treatment Technologies, Domestic and International,
           Atlanta, GA.
           EPA/540/2-89/056 (Technical Papers)
    
    o      Second Forum on Innovative Hazardous Waste Treatment Technologies, Domestic and
           International.
           EPA/540/2-90/009 (Abstracts)
           EPA/540/2-90/010 (Technical Papers)
    
    o      NATO/CCMS Project - International Evaluation of In Situ Biorestoration of Contaminated Soil
           and Groundwater.
           EPA/540/2-90/012
    
    o      Second International Conference on New Frontiers for Hazardous Waste Management:
           Proceedings of a Conference Held in Pittsburgh, PA, Sept. 27-30, 1987.
           EPA/600/9-87/018F
    
    o      Third International Conference on New Frontiers for Hazardous Waste Management:
           Proceedings of a Conference Held in Pittsburgh, PA, Sept. 70-73, 7989.
           EPA/600/9-89/072
    
    DOE
    
    o      Bioremediation of Mercury-Contaminated Sites:  Foreign Trip Report, Sept.  9-17, 1989. Turner,
           R.R.  Oak Ridge National Laboratory, DOE, TN. Sept. 1989.
           ORNL/FTR-3393; NTIS or OSTl: DE90001248
                               B.  TECHNOLOGY SURVEY REPORTS
    
    EPA
    
    o      Approaches for Remediation of Uncontrolled Wood Preserving Sites.
           EPA/625/7-90/011
    
    o      Assessing Detoxification and Degradation of Wood Preserving and Petroleum Wastes in
           Contaminated Soil. April, W., R. Sims, and J. Sims. Waste Management & Research.
           8(1): 45-65.  Feb. 90.
           EPA/600/J-90/009; NTIS:  PB 90-243275
    

    -------
     A Compendium of Technologies Used in the Treatment of Hazardous Waste
     EPA/625/8-87/014
    
     Guidance on Remedial Action for Superfund Sites with PCB Contamination.
     EPA/540/G-90/007
    
     Guide to Treatment Technologies for Hazardous Wastes at Superlund Sites.  Office of
     Environmental Engineering and Technology, U.S. EPA, Washington, D.C. Mar. 1989.
     EPA/540/2.89/052; NT1S:  PB 89-190821 /XAB
    
     Handbook on In Situ Treatment of Hazardous Waste-Contaminated Soils.
     EPA/540/2-90/002
    
     In Situ Restoration Techniques for Aquifers Contaminated with Hazardous Wastes. Lee, M.D.,
     J.T. Wilson, and C.H. Ward. Journal of Hazardous Materials. Elsevier Science Publishers B.V.
     Amsterdam, The Netherlands. 14:71-82. 1987.
     EPA/600/J-87/032; NTIS:  PB 87-198396
    
     Innovative Operational Treatment Technologies for Applications to Superfund Sites.
     EPA/540/2-90/006
     EPA/540/2-90/004 (Nine Case Studies)
    
     Innovative Processes for Reclamation of Contaminated Subsurface Environments.  Canter, L.W.,
     L.E. Streebin, M.C. Arquiaga, F.E. Carranza, and B.H. Wilson.
     EPA/600/2-90/017 (Project Summary); NTIS:  PB 90-199514
    
     Innovative Treatment Technologies:  Semi-Annual Status Report.  Jan. 1991.
     EPA/540/2-91/001
    
     Mobile Treatment Technologies for  Superfund Wastes.
     EPA/540/2-86/003f
    
     Report on Decontamination of PCB-Bearing Sediments. Wilson, D.L  Hazardous Waste
     Engineering Research Laboratory, U.S. EPA, Cincinnati, OH.  Oct. 1987.
     EPA/600/2-87/093
    
     Review of In-Place Treatment Techniques for Contaminated Surface So//s. Volume I.  Technical
     Evaluation.
     EPA/540/2-84/003*
    
     PCB (Polychlonnated Biphenyl) Sediment Decontamination, Technical/Economic Assessment
     of Selected Alternative Treatments:  Final Report, Jun.  1985-Feb.  1986.  Carpenter. B.H.
     Hazardous Waste Engineenng Research Laboratory, U.S.  EPA, Cincinnati, OH. Dec. 1986.
     EPA/600/2-86/112
    
    Seminar Publication - Corrective Actions: Technologies and Applications.
    EPA/625/4-89/020
    
    Summary of Treatment Technology Effectiveness for Contaminated Soil:  Final Report.
    EPA/540/2-89/053
    
    Superfund Innovative Technology Evaluation (SITE) Program - Brochure.
    EPA/540/8-89/010
    

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    o      Superiund Innovative Technology Evaluation Program -- SITE Program Fact Sheet
           OSWER Directive 9330.1-03FS
    
    o      Superfund Innovative Technology Evaluation Program' Technology Profiles.
           EPA/540/5-90/006
    
    o      Supertund Treatability Clearinghouse Abstracts.
           EPA/540/2-89/001
    
    o      Technical Resource Document:  Treatment Technologies for Halogenated Organic Containing
           Wastes.  Volume I.
           EPA/600/2-87/098
    
    o      Technologies for Delivery or Recovery for the Remediation of Hazardous Waste Sites.
           EPA/600/S2-89/066 (Project Summary)
    
    o      Technologies for In Situ Treatment of Hazardous Wastes. Banning, D.E. and R.P. Lewis.
           Hazardous Waste Engineering Research Laboratory, U.S. EPA, Cincinnati, OH. Jan. 1987.
           EPA/600/D-87/014; NTIS: PB 87-146007/XAB
    
    o      Technology Screening Guide for Treatment of Soils and Sludges.
           EPA/540/2-88/004
    
    o      Treatment Potential for 56 EPA Listed Hazardous Chemicals in Soil.  Sims, B.C., W.J. Douceoe,
           J.E. McLean, W.J. Greeney, and R.R. Dupont. Feb. 1988.
           EPA/600/6-88/001; NTIS:  PB 89-174446
    
    o      Treatment Technology Background Document.  Bertow, J.R. and J. Vorbach.  Office of Solid
           Waste, U.S. EPA, Washington DC. Jun. 1989.
           EPA/530/SW-89/048A; NTIS: PB 89-221410/XAB
    
    U.S. Army
    
    o      Guidelines tor Selecting Control and Treatment Options for Contaminated Dredged Material
           Requiring Restrictions:  Final Report. Cullinane, M.J., et at. U.S. Army Corps of Engineers
           Waterways Experiment Station.  Sept.  1986.
           No published documentation number
    
    o      Installation Restoration and Hazardous  Waste Control Technologies. 1990 Edition.  U.S. Army
           Toxic and Hazardous Materials Agency. Aug. 1990.
           USATHAMA: CETHA-TS-CR-90067
    DOE
           Demonstrations of Technology for Remediation and Closure of Oak Ridge National Laboratory
           Waste Disposal Sites.  Spalding, B.P., G.K. Jacobs, and E.C. Davis.  Oak Ridge National
           Laboratory, DOE, TN.  Sept. 1989.
           ORNUTM-11286; NTIS or OSTl: DE90001854
    
           Treatabihty of Hazardous Chemicals  in Soils: Volatile and Semivolatile Organics. Walton, B.T.,
           M.S. Hendncks, T.A. Anderson, and S.S. Talmage. Oak Ridge National Laboratory, DOE, TN.
           Jul. 1989.
           ORNL-6451; NTIS or  OSTl:  DE89016892 (Al»o available from EPA, Ada, OK)
    

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                                C.  TREATABILITY STUDIES (General)
    
     EPA
    
     o      Groundwater ana Leachate Treatability Studies at Four Superfund Sites.
           EPA/600/2-86/029
    
     o      Results of Treatment Evaluations of Contaminated Soils.  Esposito. P., J. Hessling, B.B. Locke,
           M. Taylor, and M. Szabo.  Hazardous Waste Engineering Research Laboratory, U.S. EPA.
           Cincinnati, OH. Aug. 1988.
           EPA/600/D-88/181
    
     o      Treatability Potential For EPA Listed Hazardous Wastes in Soil.  Loehr, R.C.
           EPA/600/2-89/011; NTIS:  PB 89-166581 (Available from EPA, Ada, OK)
    
     o      Treatability Potential for 56 EPA Listed Hazardous Chemicals in Soil.
           NTIS: PB 89-174446 (Available from EPA, Ada, OK)
                                     D. THERMAL PROCESSES
    
    EPA
    
    o      Applications Analysis Report (SITE Program) - American Combustion Pyretron Destruction
           System.
           EPA/540/AS-89/008
    
    o      Applications Analysis Report (SITE Program) - Shirco Infrared Incineration System.
           EPA/540/A5-89/007 (Also available in videocassette from EPA, Edison, NJ)
           Engineering Bulletin - Mobile/Transportable Incineration Treatment.
           EPA/540/2-90/014
    U.S. Army
           Bench-Scale Investigation of Low Temperature Thermal Stripping of Volatile Organic
           Compounds (VOCs) from Various Soil Types:  Technical Report.  Johnson, N.P., J.W. Noland,
           and P.J. Marks.  U.S. Army Toxic and Hazardous Materials Agency.  Nov. 1987.
           USATHAMA: AMXTH-TE-CR-87124
    
           Demonstration of Thermal Stripping of JP-4 and other VOCs from Soils at Tinker Air Force
           Base, Oklahoma City, OK: Final Report.  U.S. Army Toxic and Hazardous Materials Agency.
           Mar. 1990.
           USATHAMA: CETHA-TS-CR-90026
    
           Economic Evaluation of Low Temperature Thermal Stripping of Volatile Organic Compounds
           from Soil:  Technical Report.  Marks, P.J. and J.W. Noland. U.S. Army Toxic and Hazardous
           Materials Agency Aug. 1986.
           USATHAMA: AMXTH-TE-CR-86085
    

    -------
    o       Pilot Investigation of Low Temperature Thermal Stripping of Volatile Organic Compouncs from
            Soil (2 vols).  U.S. Army Toxic and Hazardous Materials Agency. Task 11  Jun. 1986
            USATHAMA:  AMXTH-TE-TR-86074
    
    
                                 E.  SOLIDIFICATION/STABILIZATION
    
    EPA
    
    o      Applications Analysis Report - Chemfix Technologies, Inc., Chemical Fixation/Stabilization.
            EPA/540/A5-89/011
    
    o      Bench Scale Fixation of Soils from the Tacoma Tar Pits Superfund Site.
            EPA/600/8-89/069
    
    o       Critical Review of Cement-Based Stabilization/Solidification Techniques for the Disposal of
           Hazardous Wastes:  Final Report Mar.-Dec. 1986.  Clark, A., Clark and Associates, Twickenham
            (England). Dec. 1986.
            R/D-5433-EN-01; NTIS:  AD-A184 427/3/XAB
    
    o      Evaluation of Solidification/Stabilization as Best Demonstrated Available Technology for
            Contaminated  Soils.
            EPA/600/S2-89/013 (Project Summary)
    
    o      Evaluation of Solidification/Stabilization for Treating Hazardous Waste in the United States.
            EPA/600/D-88/030
    
    o      Feasibility of In Situ Solidification/Stabilization of Landfilled Hazardous Wastes.
           EPA/600/2-83/088
    
    o      Handbook for Stabilization/Solidification of Hazardous Waste.
            EPA/540/2-86/001
    
    o      Interference Mechanisms in Waste Stabilization/Solidification Processes. Jones, LW. Risk
            Reduction Engineering Laboratory, U.S. EPA, Cincinnati, OH. Jan.  1990.
            EPA/600/2-89/067
    
    o      In Situ Stabilization/Solidification of PCB-Contaminated Soil.
           EPA/600/D-89/119
    
    o       The Morphology and Microchemistry of Solidified/Stabilized Hazardous Waste Systems.
            NTIS:  PB 90-134156/AS
    
    o      Perspectives on Solidification/Stabilization Technology for Treating Hazardous Waste.
            EPA/600/D-87/027
    
    o      Physical Properties and Leach  Testing of Solidified/Stabilized Industrial Wastes.
           EPA/600/2-82/099
    
    o      Review of Solidification/Stabilization Technology.
           EPA/600/J-87/019
    

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     SITE Demonstration of :ne CHEMFIX Solidification/Stabilization Process a: me Ponaoie
     Eouipment Salvage Company Sue
     EPA/600/J-90/021
    
     Solidification and Thermal Degradation of TNT Waste Sludges Using Asphalt Encapsulation.
     Report for June 1982-June 1983  Triegel, E.K., J.R.  Kolmer, and D.W. Ouanian. Woodwaro-
     Clyde Consultants, Plymouth Meeting, PA. Aug. 1986.
     EPA/600/D-86/195; NTIS: PB 86-229150/XAB
    
     Stabilization/Solidification of CERCLA and RCRA Wastes: Physical Tests, Chemical Testing
     Procedures, Technology Screening,  and Field Activities. Center for Environmental Research
     Information (CERI), U.S. EPA, Cincinnati, OH.  May 1989.
     EPA/625/6-89/022; NTIS: PB 90-179656/XAB
    
     Stabilization/Solidification of Hazardous Waste. Hill, R.D. Hazardous Waste Engineering
     Research Laboratory, U.S. EPA, Cincinnati, OH.  Jan. 1986.
     EPA/600/D-86/028; NTIS: PB 86-156312/XAB
    
     Status of Solidification/Stabilization in the United States and Factors Affecting Its Use.
     EPA7600/D-89/159
    
     Survey of Solidification/Stabilization Technology for Hazardous Industrial Wastes.
     EPA/600/2-79/056
    
     Systems to Accelerate In Situ Stabilization of Waste Deposits.
     EPA/540/2-86/002
    
     Technical and Regulatory Status of Solidification/Stabilization in the United States.
     EPA/600/D-90/057
    
     Technology Demonstration Summary - International  Waste  Technologies(Geo-Con In Situ
     Stabilization/Solidification Update Repon. Jan. 1991.
     EPA/540/S5-89/004a
    
     Technology Evaluation Repon, SITE Program Demonstration, International Waste Technologies,
     In Situ Stabilization/Solidification Technology, Hialeah, FL  Volume I.
     EPA/540/5-89/004a
    
     Technology Evaluation Report, SITE Program Demonstration, International Waste Technologies,
     In Situ Stabilization/Solidification Technology, Hialeah, FL.  Volume II.
     EPA/540/5-89/004b
    
     Technology Evaluation Repon, SITE Program Demonstration Test, HAZCON Solidification,
     Douglasville, PA.  Volume I.
     EPA/540/5-89/0011 (Also available  In videocassette from EPA, Edison,  NJ)
    
     Technology Evaluation Repon, SITE Program Demonstration Test, HAZCON Solidification,
    Douglasville, PA.  Volume II.
     EPA/540/5-89/001 b
    
     Technology Evaluation Repon, SITE Program Demonstration Test, Soliditech,  Inc.
    Solidification/Stabilization Process, Morganville, NJ.  Volume I.
    EPA/540/5-89/005a
    

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            Tecnnotogy Evaluation Repon. SITE Program Demonstration Test, Soiiditecn, .Inc
            Solidification/Stabilization Process, Morganvnie. NJ. Volume II.
            EPA/540/5-89/005b
    
            Toxicity Bioassay and Eluate Heavy Metals Analysis Results of the Bench Scale Stabilization
            Study of Soils from the United Chrome Supertund NPL Site, Corvalhs, OR.
            EPA/600/3-89/074
    U.S. Army
           Innovative Solidification Techniques for Hazardous Wastes at Army Installations: Final Report.
           Myers, T.E. Environmental Laboratory, U.S. Army Corps of Engineers Waterways Experiment
           Station, Vicksburg, MS.  Nov. 1985.
           WES/MP/EL-85-7; NTIS:  AD-A163 448/4/XAB
    U.S. Navy
           Review of Literature on Waste Solidification/Stabilization with Emphasis on Metal-Bearing
           Wastes: Final Report, Sept. 1988-May 1989. Clark, S., T. Greathouse, and J. Means.  Naval
           Civil Engineering Laboratory, Port Hueneme, CA. Aug. 1989.
           NCEL-CR-89.015; NTIS: AD-A213 133/2/XAB
    U.S. Air Force
    DOE
           In Situ Immobilization of Heavy-Metal-Contaminated Soil:  Final Report, Sept.  11, 1984-Feb. 4,
           1987. Czupyrna, G., R.D. Levy, A.I. MacLean, and H. Gold.  Air Force Engineering and
           Services Center, Tyndall Air Force Base, FL Jun. 1988.
           AFE-0302-FMI-8472-68; AFESC/ESL-TR-87-17; NTIS:  AD-A201 244/1/XAB
           Cement Fixation Studies at Oak Ridge Gaseous Diffusion Plant. Shoemaker, J.L Oak Ridge
           Gaseous Diffusion Plant, DOE, TN.  Nov. 1986.
           K/PS-1236; NTIS or OSTI: DE87005546
    
           Improved Method and Composition for Immobilization of Waste in Cement-Based Material.
           Tallent. O.K., K.E. Dodson, and E.W. McDaniel.  Oak Ridge National Laboratory, DOE, TN.
           Oct. 1987.
           NTIS:  Paterrts-US-A6103149
    
           Spray-Dryer Spent-Sorbent Hazardous-Waste Fixating and Cemetitious Properties. Schuttz, T.D.
           R.L. Berger, and K. Fishbem. Illinois University,  Urbana, IL Mar. 1989.
           NTIS:  PB90-160748/XAB
                                          F.  BIOLOGICAL
    
    EPA
    
    o      Action of a Fluoranthene-Utilizmg Bacterial Community of Potycylic Aromatic Hydrocarbon
           Components of Creosote.
           EPA/600/J-89/425
    

    -------
     Adaptation to and Biocegractation of Xenobiotic Compounds oy Microbial Communities trorr a
     Pristine Aquifer. Aelion. C.M.. C.M. Swindoll. and F K. Pfaender  Appl Environ Microbioi
     53(9)  2212-2217.  Sept. 1987
     EPA/600/J-87/208; NTIS: PB 88-170584
    
     Aerobic Btodegradation of Natural and Xenobiotic Organic Compounds by Subsurface Microbial
     Communities.  Swindell, C.M., C.M. Aelion, D.C. Dobbins, et al. Environmental Toxicology and
     Chemistry. 7(4): 291-299.  Apr. 1988.
     EPA/600/J-88/067; NTIS: PB 89-103204
    
     Alaskan Oil Spill Bioremediation Project.
     EPA/600/8-89/073
    
     Anaerobic Biotransformations of Pollutant Chemicals in Aquifers.  Suflita, J.M., S.A. Gibson, and
     R.E. Beeman.  Journal of Industrial Microbiology. 3(3): 179-194.  May 1988.
     EPA/600/J-88/142; NTIS: PB 89-119341
    
     Anaerobic Degradation of Nitrogen Substituted and Sulfonated Benzene Aquifer Contaminants.
     Sulfita. J.M. Hazardous Wastes and Hazardous Materials. 6(2): 121-133.  Spring 1989.
     EPA/600/J-89/190; NTIS:  PB 90-140708
    
     The Anaerobic Degradation of o-, m- and p-Cresol  by Sulfate-Reducing Bacterial Enrichment
     Cultures Obtained from a Shallow Anoxic Aquifer. Sulfita, J.M., L Liang, and A. Saxena.
     Journal of Industrial Microbiology. 4(4): 255-266. Jul. 1989.
     EPA/600/J-89/187; NTIS:  PB 90-140674
    
     Approach to Bioremediation of Contaminated Soil.
     EPA/600/J-90/203
    
     Assessing Detoxification and Degradation of Wood Preserving and Petroleum Wastes in
     Contaminated Soil.
     EPA/600/J-90/099
    
     Athias -• An Information System tor Abiotic Transformations of Halogenated Hydrocarbons in
     Aqueous Solution.  Ellenrider, W. and M. Reihhard.  Chemosphere. 17(2): 331-344.
     Feb. 1988.
     EPA/600/J-88/026; NTIS:  PB 88-224357
    
     Biological  Treatment of Leachate from a Superfund Site.
     EPA/600/J-89/001
    
     The Biodegradation of Cresol Isomers in Anoxic Aquifers. Smolensk!, W.J. and J.M. Suflrta.
     Appl. Environ. Microbioi. 53(4): 710-716.  Apr. 1987.
     EPA/600/J-87/131; NTIS:  PB 88-149125
    
     Bioremediation of Contaminated Surface Soils. Sims, J.L., R.C. Sims, and J.E.  Matthews.
     Robert S. Kerr Environmental Research Laboratory, U.S. EPA, Ada, OK.  Aug. 1989.
     EPA-600/9-89/073; NTIS:  PB 90-164047/XAB
    
    Bioremediation of Hazardous Waste.
     EPA/600/9-90/041
    

    -------
     Biorestoration of Aquifers Contaminated wnn Organic Compounas  Lee. M.D . J M  Thomas
     R.C. Borden. P.B. Bedient. C.H. Ward, and J.T. Wilson  CRC Critical Reviews in Environmental
     Control. 18(1): 29-89.  1988.
     EPA/600/J-88/078; NTIS: PB 89-103527
    
     Siorransformation of Priority Pollutants Using Biofilms ana Vascular Plants. Wolvedon. B.C. and
     R.C.J. McCales.  Mississippi Academy of Sciences. Vol. XXXI. pp. 79-89.  1986.
     EPA/600/J-86/310; NTIS: PB 87-176764
    
     Biotransformation of Selected Alkylbenzenes and Halogenated Aliphatic Hydrocarbons in
     Methanogenic Aquifer Material: A Microcosm Study. Smith, B.H., G.B. Smith, and J.S. Rees.
     Environ. Sci. Technol. 20(10): 997-1002.  1986.
     EPA/600/J-86/227; NTIS: PB 87-170791
    
     Determination and Enhancement of Anaerobic Dehalogenation: Degradation of Chlorinated
     Organics in Aqueous Systems.
     EPA/600/2-88/054
    
     Determination of Optimal Toxicant Loading for Biological Closure of a Hazardous Waste Site.
     EPA/600/D-89/163
    
     Engineering Bulletin - Slurry Biodegradation.
     EPA/540/2-90/016
    
     Enhanced Bioremediation Utilizing Hydrogen Peroxide as a Supplemental Source of Oxygen.
     Huling, S. and B. Bledsoe.
     EPA/600/2-90/006;  NTIS:  PB 90-183435
    
    Extrapolation of Biodegradation Results to Groundwater Aquifers: Reductive Dehalogenation of
    Aromatic  Compounds. Gibson, S.A. and J.M. Suflita.  Appl. Environ. Mtcrobiol. 52(4): 681-688.
    Oct. 1986.
    EPA/600/J-86/379; NTIS:  PB 87-212429/AS
    
    A Field Evaluation of Bioremediation of a Fuel Spill Using Hydrogen Peroxide.
    NTIS:  PB 88-130257 (Available from EPA, Ada, OK)
    
    A Field Evaluation of In Situ Biodegradation for Aquifer Restoration.  Semprini, L, P. Roberts,
    G. Hopkins, 0. Mackay.  Stanford University, Stanford, CA.  Nov. 1987.
    EPA/600/2-87/096; NTIS:  PB 88-130257
    
    In Situ Aquifer Restoration of Chlorinated Aliphatics by Methanotrophic Bacteria.  Roberts, P.,
    L Simpnni, G. Hopkins, et al. Jul. 1989.
     EPA/600/2-89/033; NTIS:  PB 89-219921 AS
    
    In Situ Bioremediation of Spills from Underground Storage Tanks:  New Approaches for Site
    Characterization, Project Design,  and Evaluation of Performance.  Wilson, J.T. and L.E. Leach.
     EPA/600/2-89/042; NTIS:  PB 89-219976 (Available from EPA, Ada, OK)
    
    In Situ Biorestoration as a Ground Water Remediation Technique. Wilson, J.T., L.E. Leach,
    M.J. Henson, and J.N. Jones.  Ground Water Monitoring Review,  pp. 56-64.  Fall 1986.
    EPA/600/J-86/305; NTIS:  PB 87-177101
    

    -------
     Innovative Technology  Slurry-Phase Biodegraaanon
     OSWER Directive 9200.5-252-FS  (Fact Sheet)
    
     Laboratory Studies Evaluating the Enhanced Biodegradation of Weathered Crude Oil
     Components Through the Application of Nutrients
     EPA/600/D-90/139
    
     Leaking Underground Storage Tanks:  Remediation with Emphasis on In-Situ Biorestoration.
     Thomas, J.M.,  M.D. Lee, P.B. Bedient,  et al. Jan. 1987.
     EPA/600/2-87/008; NTIS:  PB 87-168084
    
     Lubbock Land Treatment System Research and Demonstration Project.  Volume 2. Percolate
     Investigation in the Root Zone.
     EPA/600/2-86/027b
    
     Lubbock Land Treatment System Research and Demonstration Project.  Volume 5. Executive
     Summary.
     EPA/600/2-86/027C
    
     Microbial Decomposition of Chlorinated Aromatic Compounds.
     EPA/600/2-86/090
    
     Microbial Degradation of Nitrogen,  Oxygen and Sulfur Heterocyclic Compounds Under
     Anaerobic Conditions:  Studies with Aquifer Samples. Kuhn, E.P. and J.M. Suflita.
     Environmental  Toxicology and Chemistry. 8(12):  1149-1158. Dec. 1989.
     EPA/600/J-89/353; NTIS:  PB 90-216276
    
     Microbial Removal of Halogenated Methanes, Ethanes, and Ethylenes in an Aerobic Soil
     Exposed to Methane.  Henson, J.M., M.V.  Yates, J.W. Cochran, and  D.L Shackleford.  FEMS
     Microbiology Ecology. 53(3-4): 193-201.  May-Jun. 1988.
     EPA/600/J.88/066; NTIS:  PB 90-103196
    
     Opponunities for Bioreclamation of Aquifers Contaminated with Petroleum Hydrocarbons.
     Wilson, J.T. and C.S. Ward. Developments in Industrial Microbiology (Journal of Industrial
     Microbiology Suppl. I).  Elsevier, Amsterdam, Biomedical Division. 27:109-116.  1987.
     EPA/600/J-87/133; NTIS:  PB 88-148150
    
     Promising Technologies for the Biological Detoxification of Hazardous Waste.
     EPA/600/D-88/040
    
     Reductive Dehalogenation of a Nitrogen Heterocyclic Herbicide in Anoxic Aquifer Slurries.
     Adrian, N.R. and J.M. Suflita.  Appl. Environ. Microbiol. 56(1): 292-294.  Jan. 1990.  -
     EPA/600/J-90/098; NTIS:  PB 90-245267
    
    Removal of Volatile Aliphatic Hydrocarbons in a Soil Bioreactor.
     NTIS: PB 88-170568 (Available from EPA, Ada, OK)
    
    Removal of Volatile Aliphatic Hydrocarbons in a Soil Bioreactor.  Kampbell, D., J. Wilson,
    H. Read, and T. Stocksdale. Journal of Air Pollution Control and Hazardous Waste
    Management. 37(10): 1236-1240. Oct. 1987.
    EPA/600/J-87/261; NTIS:  PB 88-180393
                                          10
    

    -------
    o      Role of Microorganisms m the Bioremediation of the Oil Spill m Prince William Sound. Aias*c
           EPA/600/D-90/119
    
    o      Sequential Reductive Dehaiogenation of Cnloroantlmes by Microorganisms from a
           Metnanogenic Aquifer. Kuhn, E.P. and J.M. Sufhta.  Environmental Science Technology 23(71
           848-852.  Jul. 1989.
           EPA/600/J-89/103; NTIS:  PB 90-117219/AS
    
    o      Structural Properties of Organic Chemicals as Predictors of Biodegraclation and Microbial
           Toxtcity in Soil.  Walton, B.T. and T.A. Anderson. Chemosphere. 17(8):  1501-1507. Aug. 1989
           EPA/600/J-88/413; NTIS:  PB 90-117078/AS
    
    o      Transport of Dissolved Hydrocarbons Influenced by Oxygen-Limited Biodegradation.
           I, Theoretical Development.  Borden, R.C. and P.B. Bedient. Water Resources Research.
           22(13): 1973-1982. Dec. 1986.
           EPA/600/J-86/333; NTIS:  PB 87-179727
    
    o      Transport of Dissolved Hydrocarbons Influenced by Oxygen-Limited Biodegradation.  II. Field
           Application.  Borden, R.C., P.B. Bedient, M.D. Lee, C.H. Ward, and J.T. Wilson. Water
           Resources Research. 22(13): 1983-1990.  Dec.  1986.
           EPA/600/J-86/333; NTIS:  PB 87-179735
    
    o      Treatment of Hazardous Landfill Leachates and Contaminated Groundwater.
           EPA/600/2-88/064
    
    U.S. Army
    
    o      Composting ExplosiveslOrganics Contaminated  Soils.  Doyle, R.C., et at. U.S. Army Toxic and
           Hazardous Materials Agency.  May 1986.
           USATHAMA: AMXTH-TE-CR-86077
    
    o      Field Demonstration - Composting of Propellants Contaminated Sediments at the Badger Army
           Ammunition  Plant (BAAP). Mar. 1989.
           USATHAMA: CETHA-TE-CR-89O61
    
    o      Field Demonstration of Treatment of Explosives-Contaminated Sediments at the Louisiana Army
           Ammunition  Plant (LAAP). Williams, R.T., P.S. Ziegenfuss, and P.J. Marks. U.S. Army Toxic
           and Hazardous Matenals Agency.  Sept. 1988.
           USATHAMA: AMXTH-IR-TE-88242
    
    U.S. Navy
    
    o      Biodecontamination of Fuel Oil Spill Located at NAVCOMMSTA,  Thursto, Scotland: Final
           Report. Potybac Corporation,  US Naval Station, Point Mugu, CA.  Dec. 1985.
           No published documentation number
    
    U.S. Air Force
    
    o      Aerobic Degradation of Tnchlorethylene.  Nelson, M.J.K., P.M. Pritchard, S.O. Montgomery, and
           A.W. Bourquin.  Jul. 1987.
           NTIS:  ESL-TR-86-44; AD-A184 948/8/XAB
                                                11
    

    -------
    DOE
            Biodegradanon and Sorpt/on of Organic Soivenrs ana Hydrocarbon Fuel Constituents in
            Subsurface Environments  Wilson. J T.. J.M Henson M.D Piwom. B H. Wilson, and
            P. Banerjee  Engineering and Services Laboratory. Air Force Engineering and Services
            Center. Tyndall Air Force Base, FL.  Mar. 1988.
            NTIS: ESL-TR-87-52; AD-A203 753/9/XAB
    
            Combined Biological and Physical Treatment of a Jet Fuel-Contaminated Aquifer.  Downey.
            D.C., R.E. Hinchee, M.S. Westray, and J.K. Slaughter. U.S. Air Force Engineering and
            Services Center, Tyndall, Air Force Base, FL 1989.
            No published documentation number
    
            Enhanced Biorectarnation of Jet Fuels - A Full-Scale Test at Eglin Air Force Base, FL.
            Hinchee, RE, D.C. Downey, M.S. Westray, and J.K. Slaughter.  Air  Force Engineering and
            Services Laboratory Technical Report.  1989.
            NTIS: ESL-TR-88-78; AD-A22 348/5/XAB
    
            In Situ Biological Degradation Test at Kelly Air Force Base, TX.  Vol.  1: Site Characterization,
            Lab Studies, and Treatment System Design and Installation. Wetzel, et al.  Air Force
            Engineering and Services Center. Apr. 1986.
            NTIS: ESL-TR-85-52; AD-A169 993/3/XAB
    
            In Situ Biological Degradation Test at Kelly Air Force Base, TX.  Vol. 2: Field  Test Results and
            Cost Model. Final Report. Wetzel, et al. Air Force Engineering and  Services Center.  Jul.
            1987.
            NTIS: ESL-TR-85-52 Vol 2; AD-A187 486/6/XAB
    
            In Situ Biological Degradation Test at Kelly Air Force Base, TX.  Vol. 3: Appendices. Final
            Report. Wetzel, et aJ. Air Force Engineering and Services Center. Jul. 1987.
            NTIS: ESL-TR-85-52 Vol 3; AD-A186 279/6/XAB
    
            Methods to Select Chemicals for In Situ Biodegradation of Fuel Hydrocarbons.  Aggarwal, P.K.,
            J.L Means, R.E. Hinchee, G.L Headington. and A.R. Gavaskar.  Jul. 1990.
            NTIS: ESL-TR-90-13
    
            Surface Based Biological Treatment of TCE Contaminated Groundwater.  Battelle Columbus
            Final Report to the U.S. Air  Force.
            NTIS:  ESL-TR-90-03
           Biodemtrification of Hartford Groundwater and Process Effluents: FY 1988 Status Report.
           Koegler. S.S., T.M. Brouns, W.O. Heath, and R.J. Hicks.  Pacific Northwest Laboratory, DOE,
           Richland, WA.  Sept. 1989.
           PNL-6917; NTIS or OSTI: DE90000993
    
           Bioremediation of PCB-Contammated Soil at the T-12 Plant. Donaldson, T.L, G.W. Strandberg,
           G.P McGinnis, A.V. Palumbo. D.C. White, D.L Hill, T.J. Phelps, C.T. Hadden.
           N.W. Revis, and G. Holdsworth. Oak Ridge National Laboratory, DOE, TN.  Sept. 1988.
           ORNL/TM-10750; NTIS or OSTI:  DE89001335
                                                 12
    

    -------
           Development of a Biological Process tor Destruction of Nitrates and Carson Tetracnionoe ir.
           Hantord Groundwater. Koegler, S.S., T.M. Brouns. and R. Hicks   Pacific Northwest Laooratory
           DOE. Richland, WA.  Oct  1989.
           PNL-SA-16928; NTIS or OSTI: DE90004675
    
           Development of a Biological Treatment System tor Hanford Groundwater Remediation: FY 7989
           Status Report.  Brouns, T.M., S.S. Koegler, W.O. Heath, J.K. Frednckson, (Pacific Northwest
           Laboratory, Richland, WA); H.D. Stensei, (Washington University, Seattle, WA),  Johnstone.
           D.L, (Washington State University,  Pullman, WA); and T.L. Donaldson, (Oak Ridge National
           Laboratory, TN). Pacific Northwest Laboratory, DOE, Richland, WA.  Apr. 1990.
           PNL-7290; NTIS or OSTI: DE9001036S
                                      G. PHYSICAL/CHEMICAL
    
    EPA
    
    o      Advanced Oxidation Processes for Treating Groundwater Contaminated with TCE (tri-
           chloroethylene) and PCE (Tetrachloroethylene): Lab Studies. (Journal Version). Glaze, W.H.
           and J.W. Kang.  Water Engineering Research Laboratory, U.S. EPA, Cincinnati, OH.  1988.
           EP A/600/J-88/114
    
    o      App/icaf/ons Analysis - CF Systems Organics Extract/on System, New Bedford, MA.  Volume I
           EPA/540/5-90/002
    
    o      Applications Analysis - CF Systems Organics Extraction System, New Bedford, MA.  Volume II.
           EPA/540/5-90/0021
    
    o      Applications Analysis Report - Terra Vac In Situ Vacuum Extraction System.
           EPA/540/5-89/003 (Also available in vldeocassette from EPA, Edison, NJ)
    
    o      Applications Analysis - Ultrox International Ultraviolet Ozone Treatment for Liquids.
           EPA/540/5-89/012
    
    o      Catalytic Dehydrohalogenation: A Chemical Destruction Method for Halogenated Organics.
           EPA/600/2-86/113
    
    o      Chemical Destruction/Detoxification of Chlorinated Dioxins in Soils. Peterson. R.L, and
           C.J. Rogers. Proceedings, llth Annual Research Symposium, Cincinnati, OH. pp.106-11.
           1985.
           EPA/600/9-85/028
    
    o      Cleaning Excavated Soil Using Extraction Agents: A State-of-the-An Review.  U.S. EPA,
           Washington. DC.  Aug. 1990.
           EPA/600/2-89/034; NTIS:  PB 89-212757/AS
    
    o      Compreriens»ve Report on trie KPEG Process for Treating Chlorinated Wastes.
           EPA/600/2-90/005; NTIS:  PB 90-163643/AS
    
    o      Demonstration Results - In Situ Steam/Hot Air Soil Stripping, Toxics Treatment, Inc.
           EPA/540/5-90/003
                                                 13
    

    -------
     Destruction of Chlorinated Hydrocarbons by Catalytic Oxidation  Joint EPA -and AFESC flepor
     published by EPA.
     EPA/600/2-86/079
    
     Development of Electroacoustical Soil Decontamination (ESD) Process (or In Situ Application
     EPA/S40/5-90/004
    
     Development of Chemical Countermeasures for Hazardous Waste Contaminated Soil.
     EPA/600/D-84/039
    
     Emerging Technology Report ~ Removal and Recovery of Metal Ions from Ground Water.
     EPA/540/5'90/005a (Evaluation Report)
     EPA/540/5-90/005b (Data and Supporting Information)
    
     Engineering Bulletin - Chemical Dehalogenation: APEG Treatment.
     EPA/540/2-90/015
    
     Engineering Bulletin - Soil Washing Treatment.
     EPA/540/2-90/017
    
     Engineering Bulletin ~ Solvent Extraction Treatment.
     EPA/540/2-90/013
    
     Evaluation of BEST^ Solvent Extraction Sludge Treatment Technology 24-Hour Test.
     EPA/600/2-88/051; NTIS: PB 88-245907
    
     Field Applications of the KPEG Process for Treating Chlorinated Wastes.
     EPA/600/2-89/036
    
     Field Studies of In Situ Soil Washing. Nash. J.H., Mason and Hanger-Silas Mason Co., Inc.,
     Leonardo, NJ.  Hazardous Waste Engineering Research Laboratory, U.S. EPA, Cincinnati, OH.
     Dec. 1987.
     EPA/600/2-87/110; NTIS: PB 88-146808/XAB
    
     Innovative Technology: BESTM Solvent Extraction Process.
     OSWER Directive 9200.5-253-FS (Fact Sheet)
    
     innovative Technology: Glycoiate Dehalogenation.
     OSWER Directive 9200.5-254-FS (Fact Sheet)
    
     Innovative Technology: In Situ Vitrification.
     OSWER Directive 9200.5-251-FS (Fact Sheet)
    
     Innovative Technology: Soil Washing.
     OSWER Directive 9200.5-250-FS (Fact Sheet)
    
     Interim Report on the Feasibility of Using UV (Ultraviolet) Photolysis and APEG (Alkali
    Polyethylene Glycoiate) Reagent for Treatment of Dioxm Contaminated Soils.
     EPA/600/2-85/083
    
    Mobile System for Extracting Spilled Hazardous Materials from Excavated Soils.
    EPA/600/2-63/100
                                          14
    

    -------
    o      PCS Destruction- A Novel Denalogenation Reagent.
           EPA/600/J-85/407
    
    o      Repon on the Feasibility of APEG  Detoxification of Dioxin-Contammated Soils.
           EPA/600/2-84/071
    
    o      Sequential Dehalogenation of Chlorinated Ethenes.
           EPA/600/J-86/030
    
    o      State of Technology Review:  Soil Vapor Extraction Systems.
           EPA/600/2-89/024
    
    o      Treatment of Contaminated Soils with Aqueous Surfactants. Ellis, W.D., J.R. Payne, and
           G.D. McNabb.  1985.
           EPA/600/2-85/129
    
    o      U.S. EPA's Mobile In Situ Containment/Treatment Unit.
           Videocissette from EPA, Edison, NJ
    
    o      U.S. EPA's Mobile Soil Washing System.
           Videocassette from EPA, Edison, NJ
    
    U.S. Army
    
    o      Arsenic Contaminated Treatment Pilot Study at the Sharpe Army Depot (SHAD) Lathrope,  CA:
           Final Technical Repon.  U.S. Army Toxic and Hazardous Materials Agency.
           Dec. 1990.
           USATHAMA: CETHA-TS-CR-90184
    
    o      Bench-Scale Investigation of Air Stripping of Volatile Organic Compounds from Soil: Technical
           Report. McDevitt, N.P., J.W. Noland, and P.J. Marks. U.S. Army Toxic and Hazardous
           Materials Agency. Aug. 1986.
           USATHAMA: AMXTH-TE-CR-86092
    
    o      Engineering and Development Support of General Decontamination Technology for the
           DARCOM Installation Restoration Program Task 4.  Desensitization of Explosive-Laden
           Soils/Sediments, Phase II - Lab Studies. Mar. 84-Nov. 85.
           DRXTH-TE-CR-83207;  NTIS: AD-A162 456/8/XAB
    
    o      Evaluation of Ultraviolet/Ozone Treatment of Rocky Mountain Arsenal (RMA) Groundwater.
           Bunts, R., P. Matone, and D. Thompson. U.S. Army  Corps of Engineers Waterways
           Experiment  Station Technical Report.  1978.
           Report No.  Y-78-1
    
    o      Granular Activated Carbon (GAC) System Performance Capabilities and Optimization.
           Feb. 1987.
           USATHAMA: AMXTH-TE-CR-87111
    
    o      Ground Freezing for Containment of  Hazardous Wastes.  Iskandar. Cold Regions Research
           and Engineering Laboratories (CRREL), Hanover, NH. 1986.
           CRREL-SR-86-19
                                                15
    

    -------
            Heavy Metal Contammarect Soil Treatment Roy F Weston. me  Feb. 1987
            USATHAMA: AMXTH-TE-CR-86101
    
            In Situ Volatilization Remedial System Cost Analysis   Technical Repon.  Metzer. N . et al
            U.S. Army Toxic and Hazardous Materials Agency.  Aug. 1987.
            USATHAMA: AMXTH-TE-CR-87123
    
            Laboratory Testing of a Fluidized Bed Dry Scrubbing Process for the Removal of Sulfur Dioxide
            and Phosphorus Pentoxide from an Inert Carrier Gas.  U.S. Army Toxic and Hazardous
            Materials Agency. Mar. 1988.
            USATHAMA: AMXTH-TE-CR-88008
    
            Soil Washing Development Program and Demonstration Test on Basin F Materials.
            Arthur D. Little, Inc. May 1988.
            USATHAMA: AMXTH-TE-CR-S6016
    
            Task Order 4, Laboratory Study of In Situ  Volatilization Technology Applied to Fort Campbell
            Soils Contaminated with JP-4: Final Repon.  Marks, P., et al. U.S. Army Toxic and Hazardous
            Materials Agency. May  1987.
            No published documentation number
    
            Task Order 4, Laboratory Study of In Situ  Volatilization Technology Applied to Letterkenny Army
            Depot Soils.  U.S. Army  Toxic and  Hazardous Materials Agency. Mar. 1988.
            USATHAMA: AMXTH-TE-CR-88009
    
            Task 11, In Situ Air Stripping of Soils Pilot Study: Final Report.  Anastos, G.J., et al.  U.S. Army
            Toxic and Hazardous Materials Agency.  Oct. 1985.
            USATHAMA: AMXTH-TE-TR-85026
    
            Use of Vapor Extraction Systems for In Situ Removal of Volatile Organic Compounds from Soil.
            Bennedsen, H.B., J.P. Scon, and J.D. Hartley. Washington, D.C. Mar. 1987.
            No published documentation number
    U.S. Navy
           Advanced Oxidation Process for Treatment of Contaminated Groundwater.  Olah and Law.
           Naval Civil Engineering Laboratory.  71-080 20#T357104.
           TM-71-90-2
    
           Initial Feasibility Repon:  Investigation of Photochemical Oxidative Techniques for Treatment of
           Contaminated Groundwater.  Olah and Law. Naval Civil Engineering Laboratory.  71-080.
           TM-71-90-9
    U.S. Air Force
           An Evaluation of Rotary Air Stripping for Removal of Volatile Organics from Ground Water.
           Dietrich, C., D. Treichler, and J. Armstrong, Traverse Group, Inc., Ann Arbor, Ml. Feb. 1987.
           NTIS: ESL-TR-S6-46
    
           In Situ Decontamination by Radiofrequency Heating - Field Test. Dev, K, J. Enk, G. Stresty,
           J. Bridges, and 0. Downey.  Sept. 1989.
           NTIS: ESL-TR-88-62; AD-A221 186/0/XAB
                                                16
    

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    DOE
           Removal of Volatile Organics from Humidified Air Streams oy Absorption. Coutnat. R W
           T Zwick. and B.C. Kim  Dec. 1987
           NTIS:  ESL-TR-87-24
    
           Surfactant-Enhanced In Situ Soils Washing. Nash, J., R. Traver. and D.C. Downey.  Sept 1987
           NTIS:  ESL-TR-87-18; AD-A188 066/5/XAB
    
           Vapor-Phase  Catalytic Oxidation of Mixed Volatile Organic Compounds.  Greene, H. University
           of Akron, Akron, OH. Sept. 1989.
           NTIS:  ESL-TR-89-12
           Cryogenic Barrier Enhanced Soil Cleanup, A Literature Review. University of Idaho.
           EG&G Report to be published (Contact DOE, Idaho National Engineering Laboratory.)
    
           An Evaluation of the Use of an Advanced Oxidation Process to Remove Chlorinated
           Hydrocarbons from Groundwater at the U.S. Department of Energy Kansas City Plant.  FY 1989
           Annual Report.  Garland, S.B. II, and G.R. Payton. Oak Ridge National Laboratory, DOE, TN.
           Oct. 1990. (To be published)
           ORNL/TM-11337
    
           An Evaluation of the Use of a Combination of Ozone-Ultraviolet Radiation and Hydrogen
           Peroxide to Remove Chlorinated Hydrocarbons from Groundwater at the U.S. Department of -
           Energy Kansas City Plant. FY 1988 Annual Report. Garland, S.B. II.  Oak Ridge National
           Laboratory, DOE, TN.  May 1989.
           ORNL7 TM-11056; NTIS or OSTI:  DE89015678
    
           Feasibility Testing of In Situ Vitrification on Arnold Engineering Development Center
           Contaminated Soils. Timmerman, C.L Pacific Northwest Laboratory, DOE, Richland, WA.
           Mar. 1989.
           ORNL/Sub-88-14384/1; NTIS or OSTI:  DE89008976
    
           In Situ Vitrification: A Review.  Cole, LL, and D.E. Fields.  Oak Ridge National Laboratory,
           DOE, TN. Nov. 1989.
           ORNL/TM-11293; NTIS or OSTI: DE90O03379
    
           In Situ Vitrification, Heat and Immobilization are Combined for Soil Remediation. Fitzpatrick, V.,
           and J. Hansen. Geosafe Corp., Kirkland, WA. Hazmat World. 2(12): 30-34.  Dec. 1989.
           No published documentation number.
    
           In Situ Vitrification of PCB (Potychlonnated Biphenyl)-Contaminated Soils: Final Report.
           Timmerman, C.L  Pacific Northwest Laboratory, DOE, Richland, WA. Oct. 1986.
           EPRI-CS-4839; NTIS or OSTI:  DE87003328
    
           In Situ Vitrification: Test Results for a Contaminated Soil-Melting Process, Supplement 1.
           Buelt. J.L, C.L Timmerman, and J.H. Westsik, Jr. Pacific  Northwest Laboratory, DOE,
           Richland, WA. Oct. 1989.
           PNL-SA-15767-Suppl. 1; NTIS or OSTI:  DE9O005231
                                                17
    

    -------
     o     in Situ Vitrification of Transuranic Wastes An Updated Systems Evaluation anc Aponcafois
           Assessment.  Buelt, J.L, C.L Timmerman. KH. Oma  V.F. FitzpatncK, and J G Carter  Pac.fc
           Northwest Laboratory, DOE. Richland. WA  Mar. 1987.
           PNL-4800-Suppl. 1; NTIS or OSTI:  DE870073S6
    
     o     Protection of Ground Water by Immobilization of Heavy Metals in Industrial-Waste Impacted Soil
           Systems. McLean, J.E., L.M. Dudley, R.C. Sims.  Utah Water Research Laboratory, Utah State
           University, Logan, UT.  Sept. 1986.
           NTIS:  PB 87-112413/XAB
    
     o     Remediation of Contaminated Soil Using Heap Leach Mining Technology.  Tork, D.A. and
           P.L Aamodt.  Los Alamos National Laboratory, DOE, NM.  1990.
           LAUR-90-701; NTIS or OSTI:  DE90007510
    
    o      Sream Stripping and Batch Distillation for the Removal/Recovery of Volatile Organic
           Compounds.  Hassan, S.Q., and J.P. Herrin. Dept. of Civil and Environmental Engineering,
           Cincinnati University, Cincinnati, OH.  1989.
           NTIS:  PB 89-218796/XAB
    
    U.S. Bureau of Reclamation
    
    o      Selenium Removal with Ferrous Hydroxide.  Moody, C.D. and A.P. Murphy.  Proceedings of
           Toxic Substances in Agricultural Water Supply and Drainage, U.S. Committee on Irrigation and
           Drainage, pp.  231-241.  Jun. 1989.
           Available from Bureau of Reclamation
                                                18
    

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                                    H.  DATABASES
    
    Alternative Treatment Technology Information Center
    
    The Alternative Treatment Technology Information Center (ATTIC) is a comprehensive
    automated information retrieval system that integrates existing hazardous waste data into a
    unified, searchable resource. This system provides access to a wide variety of technical
    information sources at one location, including information on alternative treatment
    technologies, such as international reports, bench and pilot scale data, and industrial
    applications.  The Center itself provides searches of ATTIC resident databases, comprehensive
    searches of other on-line databases, and technical evaluations of collected data. An on-line
    system provides an electronic link to the ATTIC system databases and document ordering and
    is accessible by any PC or Macintosh  equipped with communications software and a modem.
    The system operator can be reached at 301/816-9153 for further information.
    
    
    Defense Technical Information Center On-line Syctem
    
    The Defense RDT&E On-line System (DROLS) was developed by the Defense Technical
    Information Center (DTIC) to provide on-line access to its collection of reports and documents.
    DROLS provides access to three separate databases:
    
           •      Research and Technology Work Unit Information System (WUIS) Database. A
                  database of technically oriented summaries of on-going DoD research and  -
                  technology efforts at the work unit level of contracted projects.
    
           •      Technical Report (TR)  Database.  A database consisting of bibliographic
                  records of technical reports submitted to DTIC by DoD, National Aeronautics
                  and Space Administration (NASA), other government agencies, and their
                  contractors.
    
           •      Independent Research and Development (IR&D) Database.  A database of
                  private contractors' independent R&D efforts shared with DoD.  This database
                  is proprietary and made accessible  only to classified DoD terminals.
    
    Practically all of DTlC's Technical Report collections can be searched and displayed through
    DROLS. Citations to classified and unclassified reports and limited and unlimited distribution
    reports are available to qualified users. Most of the standard bibliographic items such as
    author, source (organizations), report date, title and subjects can be searched for through the
    on-line system. Free-text qualification  of the title and narrative fields is available on a limited
    basis. Nonbibliographic data are also searchable (e.g., projects, contracts,  report  numbers,
    and funding sources).  For more information on DTlC's on-line system, contact DTIC directly:
    
           Defense Technical Information Center
           Attn:  On-line Support Office (DT1C-BLD)
           Bldg. 5. Cameron Station
           Alexandna, VA 22?04-6145
           703/274-7709
           AUTOVON 284-7790
                                          19
    

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     Hazardous Waste Collection Database
    
     The Hazardous Waste Collection Database (HWCD) is a special EPA Headquarters Library
     Collection on hazardous waste related topics.  It is designed to better meet the information
     needs of EPA staff by making key documents and services more readily available through the
     EPA Library Network.  HWCD is a bibliographic system referencing each item in the collection
     by a corresponding record in the data base. Each record contains a bibliographic reference
     and abstract for the referenced HWCD resource.  The EPA Headquarters Library in
     Washington, D.C. maintains the collection and  the contents of the data  base.  HWCD contains
     books and journals, legislation and regulations, reports from Federal agencies, OSWER policy
     and guidance directives, and EPA reports from selected program offices.  Documents
     produced by the ATTIC program are also included in the collection.  The data base is
     available through the EPA On-line Library System (OLS).  For more information, contact Felice
     Sacks, EPA Headquarters Library, at 202/382-5922, or Cathy Metzler, National Technical
     Information Service (NT1S), at 703/487-4807.
    National Technical Information Service
    
    The National Technical Information Service (NTIS) data base consists of unclassified U.S. and
    foreign government-sponsored research, development, and engineering program reports, as
    well as other analyses prepared by government agencies and their contractors and grantees.
    Items included in this coverage are Federally-generated machine-readable data files and
    software; U.S. government inventions available for licensing; reports on new technologies
    developed by Federal agencies; federally-generated translations of international publications;
    and reports prepared by non-U.S. government agencies and exchanged with Federal
    agencies.  For more information on accessing this database, contact NTIS directly:
    
           National Technical Information Service
           U.S. Department of Commerce
           5285 Port Royal Road
           Springfield, VA 22161
           703/487-4600
                                         20
    

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                                     I.  DOCUMENT SOU  ~ES
    EPA documents and reports listed in this bibliography may be obtained from the following sources
    EPA/530
    (Solid Waste) RCRA Docket
    and Information Center
    401 M Street. SW, WH-562
    Washington, DC 20460
    Ann: RCRA Docket
    (202)475-9327
    EPA/Center for Environmental
    Research Information (CERI)
    OSWER Directives are available
    from the Superfund Docket and
    Information Center
    26 W. Martin Luther King Drive
    Cincinnati, OH 45268
    (513)569-7562
    
    401 M St. SW, OS-245
    Washington, DC 20460
    Ann. Superfund Directives
    (202)382-6940
    Videocassertes Available
    from EPA/TIX
    Publications Available
    from EPA/Ada Laboratory
    Woodbridge Ave.
    Bldg. 209
    Edison. NJ  08837
    (201)906-6860
    
    Kay Cooper
    U.S. EPA
    P.O. Box 1198
    Ada, OK 74820
    FTS 743-2354
    (405) 332-8800
    Order NTIS reports directly from NT1S:
    
           National Technical Information Service
           U.S. Department of Congress
           5285 Port Royal Road
           Springfield, VA 22161
    
           To ORDER reports:  703/487-4650
    
           For general Information: 703/487-4600
                           *U.S. GOVERNMENT PRINTING OFFICE: 1 992-6<.8 . o o y 0698
                                                21
    

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     Order Department of Energy Documents with OSTI Numbers directly from OSTl
    
            OSTI
            U.S. Dept. of Energy
            Oak Ridge. TN  37801
    
    
     Order U.S. Army Toxic and Hazardous Materials Agency (USATHAMA) documents from NTIS (see
     above) or DTIC:
    
            Defense Technical Information Center (DTIC)
            Cameron Station
            Alexandria, VA 22304-6145
    
            User Services:  703/274-3848
    
            USATHAMA documents not available through NTIS or DTIC may be requested from   USATH
                                                                                       AMA
                                                                                       directly:
    
            U.S. Army Toxic and Hazardous Materials Agency
            ATTN: CETHA-TS-D
            Aberdeen Proving Ground, Maryland 21010-5401
            301/671-2054
    
    U.S. Army Corps  of Engineers Reports, not available from NTIS, can be requested from the Waterways
    Experiment Station:
    
            Mark E. Zappi, Environmental Engineer
            Environmental Engineering Division
            U.S. Army Corps of Engineers Waterways Experiment Station
           3903 Halls Ferry Road
           Vicksburg, MS 39180-6199
            (601) 643-2856
    
    Bureau of Reclamation documents are available from:
    
           Bureau of Reclamation
           ATTN: D3800
           Denver, Colorado 80225-0007
    Naval Civil Engineering Laboratory Documents, that are not available through NTIS, may be requested
    from the laboratory directly:
    
           Division Director
           Code L-71
           Navai Civil Engineering Laboratory (NCEL)
           Ron Hueneme, CA 93043
                                               22
    

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                                             Suggestion
    
    If you know of additional sources of information or specific reports that should be included in tnis
    bibliography,  or if you are often in need of information and don t know how to find it, please  make a
    note on this page. This is a setf-addressed mailer - just add postage, and drop it in the mail.
                                                  23
    

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