v/EPA
               United States
               Environmental Protection
               Agency
             Office of Emergency and
             Remedial Response
             Washington. DC 20460
Office of Research and Development
Risk Reduction Engineering Laborato
Cincinnati, OH 45268
               Superfund
                           EPA/540/2-90/003a Mar. 1990
Inventory of Treatability
Study Vendors
               Volume I

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                                        EPA/540/2-90/003a
                                       March 1990
 INVENTORY OF TREATABILITY STUDY  VENDORS

                Volume  I
                  U S Environmental Protection Agency
                  Region 5, Library (PL-12J)
                  77 West Jackson Boulevard, 12th Moor
                  Chicago,  IL  60604-3590
  RISK REDUCTION ENGINEERING LABORATORY
  U.S. ENVIRONMENTAL  PROTECTION  AGENCY
   OFFICE OF RESEARCH AND  DEVELOPMENT
         CINCINNATI,  OHIO   45268

                   AND

OFFICE OF EMERGENCY AND  REMEDIAL RESPONSE
         WASHINGTON,  D.C.   20460

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                                 DISCLAIMER
The information in this document has been funded wholly or in part by the
U.S. Environmental Protection Agency (EPA) under Contract No. 68-03-3413,
Work Assignment No.  2-52, to PEI Associates, Inc.  It has been subjected to
the Agency's peer and administrative review, and it has been approved for
publication as an EPA document.  Mention of trade names or commercial
products does not constitute endorsement or recommendation for use.

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                                  FOREWORD
Today's rapidly developing and changing technologies and industrial products
and practices frequently carry with them the increased generation of
materials that, if improperly dealt with, can threaten both public health
and the environment.  The U.S. Environmental Protection Agency (EPA) is
charged by Congress with protecting the Nation's land, air, and water
resources.  Under a mandate of national environmental laws, the Agency
strives to formulate and implement actions leading to a compatible balance
between human activities and the ability of natural systems to support and
nurture life.  These laws direct the EPA to perform research to define our
environmental problems, measure the impacts, and search for solutions.

The Risk Reduction Engineering Laboratory is responsible for planning,
implementing, and managing research, development, and demonstration programs
to provide an authoritative, defensible engineering basis in support of the
policies, programs, and regulations of EPA with respect to drinking water,
wastewater, pesticides, toxic substances, solid and hazardous wastes, and
Superfund related activities.  This publication is one of the products of
that research and provides a vital communication link between the researcher
and the user community.

The purpose of this Inventory is to present information on the availability
of various treatability study types, the media and contaminants that could
be investigated by each treatability study type, and for specific
technologies, the demonstrated experience of responding firms at Superfund
sites.  The intended audience for this Inventory comprises Remedial Project
Managers, responsible parties, contractors, and technology vendors.


                                             E. Timothy Oppelt
                                                  Director
                                    Risk Reduction Engineering Laboratory
                                    i i i

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                                  ABSTRACT
The Comprehensive Environmental Response, Compensation and Liability Act
(CERCLA) amendments mandate the use of permanent solutions to the maximum
extent practicable when remediating Superfund sites.  Fundamental to
achieving this goal is the use of treatment technologies that reduce the
intrinsic threats posed by hazardous wastes.  Treatability studies are an
important component of the remedy evaluation and selection process; these
studies provide valuable site specific data necessary to aid in the
selection and implementation of the remedy.  Therefore, EPA has initiated a
treatability study program to facilitate the performance of and improve the
quality of treatability studies.

This document was developed to facilitate the performance of treatability
studies by ensuring that requests for proposals (RFPs) for treatability
studies are made available to the broadest subset of contractors who can
perform such studies.  This listing is not a pre-qualification of
contractors, and all RFPs must be done in accordance with the Federal
Acquistions Regulations.

The information contained in this inventory has been organized into two
volumes.  Volume I provides listings of treatability study vendors organized
by technology and contaminant groups.  Volume II contains an alphabetical
listing, by vendor name, of all of the information provided by the
responding firms.

The intended users of the document are Superfund remedial project managers
and contractors who are involved in a procurement process to obtain a
treatability study.

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                                  CONTENTS


Volume I                                                            Pages

Disclaimer	     ii

Foreword	    iii

Abstract	     iv

Introduction 	      1

Table 1 - Summary List of Technology Process Options 	      7

Table 2 - Treatability Study Vendors
          by Treatment Technologies  	     11

Table 3 - Summary List of Contaminant Groups	    197

Table 4 - Treatability Study Vendors
          by Contaminant Groups Treated  	    199

Table 5 - Treatability Study Vendors	    295


Volume II


Disclaimer	     ii

Foreword	    iii

Abstract	     iv

Introduction 	      1

Table 6 - Treatability Study Vendors
          by Company Name	      7

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                                INTRODUCTION
The U.S. Environmental Protection Agency's Risk Reduction Engineering
Laboratory of the Office of Research and Development, working on behalf of
the Office of Emergency and Remedial Response, has undertaken a study to
identify and publish sources of treatability study vendors.  This effort is
in support of the Superfund remedy selection and remediation process.  On
August 31, 1989, the U.S. Environmental Protection Agency published a notice
in the Commerce Business Daily (CBD) inviting interested parties to submit
information on capabilities to conduct treatability studies.  The responses
received on or about September 25, 1989, have been assembled in a dBase 3+
formatted data base and are presented herein.

The intended purpose of this document is to provide information about
vendors that have capabilities for conducting treatability studies for
Superfund wastes or hazardous substances.  Once a specific treatment
option(s) has been identified as having potential for use at a Superfund
site, and a determination has been made that a treatability study is needed,
a Request for Proposal (RFP) announcement should be mailed directly to all
vendors that responded to the CBD notice and indicated capabilities for the
specified treatment technology.  The direct mailing is to be conducted in
conjunction with the current RFP notification process to acquire
treatability services.  The inclusion of vendors' names in this Inventory
does not constitute or imply prequalification of these vendors.

The data provided in this Inventory pertains to various treatability study
types, the media and contaminants that could be investigated by each
treatability study type, and for specific technologies, responding firms'
demonstrated experience at Superfund sites.  This information is organized
in two volumes.  Volume I contains the following tables:

     Table 1 - Summary List of Technology Process Options
     Table 2 - Listings of Vendor Information Organized Alphabetically
               by Treatment Technologies
     Table 3 - Summary List of Contaminant Groups
     Table 4 - Listings of Vendor Information Organized by Contaminant
               Groups
     Table 5 - Alphabetical  List of Vendors with Address, Telephone Number
               and the Name of a Person to Contact

Volume II of this report contains an alphabetical listing, by vendor's name,
of all of the information provided by responding firms.

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The information contained in the responses to the August 31, 1989, notice
has not been verified, and the inclusion of statements on the capabilities
of specific firms in this document (Volumes I and II) does not
constitute an endorsement by the U.S. Environmental  Protection Agency or by
PEI Associates, Inc., to conduct treatability studies.  The purpose of this
report is merely to identify and publish a list of firms interested in
conducting treatability studies rather than to qualify these firms.  EPA
intends to update this list periodically.  For further information, please
contact:

          Ms. Joan Col son
          U.S. Environmental Protection Agency
          Office of Research and Development
          Risk Reduction Engineering Laboratory
          Superfund Technology Demonstration Division
          26 W. Martin Luther King Dr.
          Cincinnati, OH   45268

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               AUGUST 31, 1989, COMMERCE BUSINESS DAILY NOTICE


The U.S. Environmental Protection Agency Office of Research and Development,
working with the Office of Emergency and Remedial Response, is seeking to
identify potential sources which possess the qualifications to perform
specific types of treatability studies at Superfund sites.  A listing of
potential sources will be made available to Regions and to EPA contractors
as a core source list which may be used for any future solicitations to
acquire treatability study services.  THIS NOTICE IS NOT AN ANNOUNCEMENT OF
A SOLICITATION OPPORTUNITY.  IT IS A REQUEST FOR INFORMATION REGARDING
CAPABILITIES OF FIRMS WHICH MAY BE INTERESTED IN FUTURE EPA NEEDS FOR
TREATABILITY STUDY SERVICES.  This announcement will not result in
prequalification of offerers.

BACKGROUND INFORMATION:  The USEPA has a need, from time to time, to acquire
treatability study services from qualified offerers in support of the
Superfund remedy selection and implementation process.  Such offerers may be
needed on an expedited basis for subcontracting opportunities under existing
contracts.  They may also be needed for prime contracting opportunities.
The Agency is seeking to develop a data base of potential offerers which
possess qualifications for such services and which wish to receive
solicitations and/or subcontracting requests as they arise.  Potential
offerers which submit information in response to this synopsis are not
assured of automatically receiving all future solicitation/subcontract
requests; however, the information they submit regarding qualifications will
be made available to those Regions/EPA Contractors which anticipate the need
for treatability study services.  Any future EPA acquisition opportunities
for treatability study services will by synopsized individually as they
arise unless one or more of the conditions set forth in the Federal
Acquisition Regulation (FAR) 5.202 exist.

REQUESTED INFORMATION:  At this time, in accordance with FAR 5.205(a),
interested parties are invited to submit information which will permit
preliminary evaluation of their capabilities.  The following types of
information are requested:

     Company Name
     Address
     Telephone Number
     Contact Name
     Company Type: U.S. Private Enterprise
                   Large/Small Business
                   Academic Institution
                   Nonprofit Entity
                   Federal, State, or Local Government Agency
                   Foreign Government
                   Foreign Firm
                   (Other)

USEPA is interested in learning what types of treatability studies can be
performed by treatability technology type.  The following information is
requested by each of the treatment technology types listed:

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                                        Ozonation
                                        Activated  carbon
                                        Catalysis
                                        Crystallization
                                        Electrodialysis
                                        Liquid-liquid extraction
                                        Reverse osmosis
                                        Solvent recovery
                                        Stripping
                                        Adsorption
                                        Other (specify)
                                        Stabilization/solidification
                                        In situ vitrification
                                        Biodegradation
                                             composting
                                             slurry-phase  treatment
                                             solid-phase treatment
FOR TREATMENT OF LIQUIDS:
     Thermal combustion
     Wet air oxidation
     Activated sludge
     Other aerobic biological treatment
     Anaerobic biological treatment
     Chemical oxidation
     Precipitation
     Reduction
     Chlorination
     Ion exchange
     Neutralization

FOR TREATMENT OF SOLIDS/SLUDGES:
     Incineration
     Wet air oxidation and vitrification
     Chemical extraction
     Chemical treatment
     Soil washing
     In situ soil flushing
     Low temperature thermal stripping
     In situ vacuum and steam extraction
     In situ biodegradation
     Other (specify)

USEPA is interested in obtaining information on the capabilities of firms
having Superfund site-specific and non-Superfund treatability study
experience.  The following information, by treatment technology, is
requested:

EXPERIENCE:    Superfund site name
               Location
               Beginning and end dates of services performed
               Media and contaminants treated

FACILITIES UTILIZED AND SERVICES PERFORMED AT SUPERFUND SITES:  Include such
information as bench/pilot scale units; unit capacity; whether unit(s) were
mobile or fixed; unit capacities and their location.

FACILITIES AND SERVICES AVAILABLE: Bench/pilot scale units
                                   Unit capacity
                                   Whether unit(s) are mobile or fixed
                                   Fixed unit capacities and location
                                   Any other relevant information

MEDIA AND CONTAMINANT CAPABILITY:  Identify the media and contaminant groups
for which your facility/staff has the capability to conduct treatability
studies.
Media include:
Aqueous media
Organic liquors
Soils
                                   Contaminant groups include:
                                   Halogenated volatiles
                                   Halogenated nonvolatiles
                                   Nonhalogenated volatiles

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     Media inc1ude--contd.:              Contaminant groups include—contd.:
     Sludges                            Nonhalogenated nonvolatiles
     Sediments                          PCBs
     Other solids                       Pesticides
     Other (specify)                    Dioxins/furans
                                        Organic cyanides
                                        Organic corrosives
                                        Volatile metals
                                        Nonvolatile metals
                                        Asbestos
                                        Radioactive materials
                                        Inorganic corrosives
                                        Inorganic cyanides
                                        Oxidizers
                                        Reducers
                                        Other (specify)

Include any relevant experience not previously discussed.

PERMITTING STATUS:  Designate those permits that you possessed for fixed
base units used at Superfund sites.  Indicate current status and limitations
of permits you possess.

PERFORMANCE CAPACITY:   Provide information on the number of specific types
of treatability studies per  month your facility/staff is capable of
conducting.

Submit any price list that may be available to the general public.

SUBMISSION OF INFORMATION:  Interested parties are requested to submit the
types of information requested in this notice to the following address:

               James S. Poles
               PEI Associates, Inc.
               Attn: Treatability Study Sources Sought
               1233 20th St., NW
               Suite 401
               Washington, DC  20036

SUBMISSION SCHEDULE:  Submit all  information by 25 September 1989.

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     Please note that throughout this document,
the term "INP" indicates "Information Not Provided"

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                    TABLE # 1:  SUMMARY LIST OF TECHNOLOGY PROCESS OPTIONS
TREATMENT
      PAGE
(IN TABLE # 2)
BIOLOGICAL
ACTIVATED SLUDGE
AEROBIC BIOLOGICAL
ANAEROBIC BIOLOGICAL
BIODEGRADATION-AQUEOUS PHASE
BIODEGRADATION-COMPOSTING
BIODEGRADATION-LAND FARMING
BIODEGRADATION-NOS
BIODEGRADATION-SLURRY PHASE
BIODEGRADATI ON-SOL ID PHASE
IN SITU BIODEGRADATI ON
ROTATING BIOLOGICAL CONTACTORS
SSP-PLASMA SLUDGE
        11
        17
        23
        27
        27
        30
        30
        34
        37
        40
        46
        46
IMMOBILIZATION
CEMENT SOLIDIFICATION
FIXATION
FIXATION/STABILIZATION
LIME SOLIDIFICATION
ORGANIC POLYMER SOLIDIFICATION
SOLIDIFICATION
SORBENTS SOLIDIFICATION
STABILIZATION
STABILIZATION/SOLIDIFICATION
THERMOPLASTIC SOLIDIFICATION
        47
        47
        47
        47
        47
        47
        48
        48
        49
        58
IN SITU TECHNOLOGIES
<> IN SITU BIODEGRADATION, SEE BIOLOGICAL
IN SITU RADIO FREQUENCY HTG
IN SITU SOIL FLUSHING
IN SITU VACUUM & STEAM EXTRACT
IN SITU VACUUM EXTRACTION
IN SITU VITRIFICATION
        59
        59
        63
        67
        67
PHYSICAL/CHEMICAL
ACTIVATED CARBON
ACTIVATED CARBON ADSORPTION
<> ACTIVATED SLUDGE, SEE BIOLOGICAL
ADSORPTION
ADSORPTION/ABSORPTION
AEROBIC PACT
ANAEROBIC PACT
CATALYSIS
CENTRIFUGATION
CHEMICAL DECHLORINATION
CHEMICAL EXTRACTION
CHEMICAL OXIDATION
CHEMICAL PRECIPITATION
CHEMICAL REDUCTION
        69
        76

        76
        82
        83
        83
        83
        85
        86
        86
        92
       100
       107

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                                               TABLE  # 1  (CONTINUED)

 TREATMENT                                                                                  PAGE
	(IN  TABLE # 2)
 PHYSICAL/CHEMICAL
 (continued)
 CHEMICAL TREATMENT                                                                          112
 CHLORINATION                                                                                117
 CLARIFICATION                                                                               122
 COAGULATION                                                                                 122
 COAGULATION/FLOCCULATION                                                                    122
 COMBUSTOR EQUIPPED U/MASS SPEC                                                              124
 CRYSTALLIZATION                                                                             124
 DEWATERING                                                                                  126
 DISSOLVED AIR FLOTATION                                                                     127
 DISTILLATION                                                                                127
 ELECTROCHEMICAL                                                                             127
 ELECTROCHEMICAL SEPARATION                                                                  128
 ELECTROCOAGULATION                                                                          128
 ELECTRODIALYSIS                                                                             128
 ELECTROLYSIS                                                                                129
 ELECTROLYTIC OXIDATION                                                                      129
 EMULSION REMOVAL                                                                            129
 EVAPORATION                                                                                 130
 FILTRATION                                                                                  130
 FILTRATION/NEUTRAL IZ/PRECIPIT.                                                              132
 FIXATION                                                                                    133
 FLOCCULATION SETTLING                                                                       133
 FLOTATION                                                                                   133
 FLOTATION THICKENING                                                                        133
 FLUID-BED STRIPPING                                                                         133
 FREEZE  CONCENTRATION                                                                        134
 FREEZE  CRYSTALLIZATION                                                                      134
 GRAVITY  (OIL/WATER)                                                                         134
 GRAVITY  THICKENING                                                                          134
 <>  IN SITU RADIO  FREQUENCY HEATING, SEE IN SITU TECHNOLOGIES
 <>  IN SITU SOIL FLUSHING, SEE  IN SITU TECHNOLOGIES
 <>  IN SITU VACUUM & STEAM STRIPPING AND EXTRACTION, SEE IN SITU TECHNOLOGIES
 ION EXCHANGE                                                                                135
 LIQUID-LIQUID EXTRACTION                                                                    140
 LIQUID-SOLID SEPARATION                                                                     144
 LOW ENERGY EXTRACTION PROCESS                                                               144
 LOU TEMP THERMAL  EXTRACTION                                                                 144
 LOU TEMP THERMAL  STRIPPING                                                                  144
 MIXED MEDIA  FILTRATION                                                                      147
 NEUTRALIZATION                                                                              148
 OIL-WATER SEPARATION                                                                        153
 OZONATION                                                                                   154
 PACT                                                                                        158
 PERVAPORATION                                                                               158
 PHYSICAL SEPARATION                                                                         158
 PHYSICAL TREATMENT-NOS                                                                      159
 RESIN ADSORPTION                                                                            159
 REVERSE OSMOSIS                                                                             159
 SEDIMENTATION                                                                               162
 SOIL WASHING                                                                               163
 SOLVENT RECOVERY                                                                            169
 SPRAY DRYING                                                                               172

                                                  a

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                                              TABLE # 1 (CONTINUED)

 TREATMENT                                                                                 PAGE
	(IN TABLE # 2)
 PHYSICAL/CHEMICAL
 (continued)
 STRIPPING                                                                                   172
 TRICKLING FILTERS                                                                           179
 ULTRAFILTRATION                                                                             179
 UV/DEEP TREATMENT                                                                           180
 UV/OXIDATION                                                                                180
 UV/OZONATION                                                                                181
 UV/PEROXIDATION                                                                             181
 UV/PHOTOLYSIS                                                                               181
 VAPOR EXTRACTION                                                                            182
 VAPOR SEPARATION                                                                            182
 WASHING                                                                                     182
 THERMAL
 ELECTROCHEMICAL INCINERATION                                                                183
 INCINERATION                                                                                183
 LOW TEMP THERMAL DESORPTION                                                                 189
 PYROLYSIS                                                                                   189
 THERMAL COMBUSTION                                                                          189
 THERMAL DECOMPOSITION                                                                       189
 THERMAL DESORPTION                                                                          190
 THERMAL DESTRUCTION                                                                         190
 THERMAL FIXATION                                                                            190
 THERMAL PROCESSING                                                                          190
 THERMAL TREATMENT-NOS                                                                       190
 VITRIFICATION                                                                               191
 WET AIR OXIDATION                                                                           193

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                                      TABLE # 2:   TREATABILITY  STUDY VENDORS BY TREATMENT  TECHNOLOGIES
TREATMENT TECHNOLOGY
                                      COMPANY NAME
                                                                      MEDIA TREATED
                                                                                          CONTAMINANT  GROUPS
                                                      BENCH
                                                      SCALE
                                               PILOT
                                               SCALE
BIOLOGICAL

ACTIVATED SLUDGE
                                C-EE BIOREMEDIATION SYSTEMS
AQUEOUS MEDIA
ORGANIC LIQUID
HALOGENATED NONVOLATILES
HALOGENATED VOLATILES
NONHALOGENATED NONVOLATILES
NONHALOGENATED VOLATILES
PCBs
PESTICIDES
                                                      YES
                                                                NO
                                CHEMENCO, INC.
AQUEOUS MEDIA
ORGANIC LIQUID
                                                                                       NOT SPECIFIED
                                                                                                                            YES       NO
                                DETOX, INC.
AQUEOUS MEDIA
ORGANIC LIQUID
SEDIMENTS
SLUDGES
SOILS
HALOGENATED VOLATILES
HALOGENATED NONVOLATILES
NONHALOGENATED VOLATILES
NONHALOGENATED NONVOLATILES
PESTICIDES
DIOXINS/FURANS
ORGANIC CYANIDES
ORGANIC CORROSIVES
VOLATILE METALS
NONVOLATILE METALS
                                                                                                                            YES       YES
                                DIVERSIFIED ENGINEERING, INC.
AQUEOUS MEDIA
ORGANIC LIQUID
SLUDGES
SEDIMENTS
HALOGENATED NONVOLATILES
NONVOLATILE METALS
NONHALOGENATED NONVOLATILES
                                                                                                                            YES
                                                                                                                                      INP
                                E M & C ENGINEERING ASSOCIATES
AQUEOUS MEDIA
ORGANIC LIQUID
DIOXINS/FURANS
HALOGENATED NONVOLATILES
HAOLGENATED VOLATILES
INORGANIC CORROSIVES
                                                                                                                             INP
                                                                                                                                       INP

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TREATMENT TECHNOLOGY
                       TABLE # 2 (CONTINUED)

      COMPANY NAME                    MEDIA TREATED       CONTAMINANT GROUPS
                                                                                                                            BENCH     PILOT
                                                                                                                            SCALE     SCALE
ACTIVATED SLUDGE
(continued)
E M & C ENGINEERING ASSOCIATES
(continued)
                                EARTH TECHNOLOGY CORP.
                                ENSOTECH, INC.
                                      AQUEOUS  MEDIA
                                      ORGANIC  LIQUID

                                      ORGANIC  LIQUID
                                      AQUEOUS  MEDIA
 INORGANIC CYANIDES
 NONVOLATILE METALS
 ORGANIC CYANIDES
 OXIDIZERS
 PCBs
 PESTICIDES
 REDUCERS
 VOLATILE METALS

 NOT SPECIFIED
HALOGENATED NONVOLATILES
HALOGENATED VOLATILES
INORGANIC CORROSIVES
INORGANIC CYANIDES
NONHALOGENATED NONVOLATILES
NONHALOGENATED VOLATILES
NONVOLATILE METALS
OXIDIZERS
REDUCERS
                                                                                                                            YES       NO
                                     YES       YES
                                ENSR -  CELGENE
                                                                      AQUEOUS  MEDIA
                                                                      ORGANIC  LIQUID
                                                      NOT SPECIFIED
                                     YES       YES
                                ENVIRONMENTAL  REMEDIATION,  INC.
                                     AQUEOUS MEDIA
                                     ORGANIC LIQUID
                                     SEDIMENTS
                                     SLUDGES
                                     SOILS
HALOGENATED VOLATILES
NONHALOGENATED VOLATILES
PCBs
PESTICIDES
                                                                                            YES        NO
                                ENVIRONMENTAL  RESOURCE ASSOCIATES
                                                                     AQUEOUS MEDIA
                                                                                       HALOGENATEO  NONVOLATILES
                                                                                       HALOGENATED  VOLATILES
                                                                                       INORGANIC  CORROSIVES
                                                                                       NONHALOGENATED  NONVOLATILES
                                                                                                                            YES       NO

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TREATMENT TECHNOLOGY
                                      COMPANY  NAME
                                                       TABLE  # 2 (CONTINUED)

                                                                      MEDIA TREATED
                                                                                          CONTAMINANT  GROUPS
                                                                                            BENCH     PILOT
                                                                                            SCALE     SCALE
ACTIVATED SLUDGE
(continued)
ENVIRONMENTAL RESOURCE ASSOCIATES
(continued)
NONHALOGENATED VOLATILES
NONVOLATILE METALS
                                ENVIRONMENTAL  TECHNOLOGY  SOUTHEAST     AQUEOUS MEDIA
                                                       HALOGENATED  NONVOLATILES
                                                       HALOGENATED  VOLATILES
                                                       NONHALOGENATED  NONVOLATILES
                                                       NONHALOGENATED  VOLATILES
                                                       NONVOLATILE  METALS
                                                                                                                            INP        INP
                                ENVIROTECH  MID-ATLANTIC
                                                                      AQUEOUS MEDIA
                                                                      ORGANIC LIQUID
                                                       HALOGENATED  NONVOLATILES
                                                       HALOGENATED  VOLATILES
                                                       NONHALOGENATED  NONVOLATILES
                                                       NONHALOGENATED  VOLATILES
                                                       NONVOLATILE  METALS
                                                                                                                            YES       YES
                                ENURIGHT  ENVIRONMENTAL,  INC.
                                      AQUEOUS MEDIA
                                      ORGANIC LIQUID
                                                                                       RADIOACTIVE  MATERIALS
                                                                                                                            YES       YES
                                GENERAL PHYSICS CORPORATION
                                                                      AQUEOUS MEDIA
                                                                      ORGANIC LIQUID
                                                       HALOGENATED NONVOLATILES
                                                       HALOGENATED VOLATILES
                                                       NONHALOGENATED NONVOLATILES
                                                       NONHALOGENATED VOLATILES
                                                       NONVOLATILE METALS
                                                       ORGANIC CORROSIVES
                                                       ORGANIC CYANIDES
                                                       PCBs
                                                       PESTICIDES
                                                                                                                            YES       YES
                                GROUNDWATER & ENVIRONMENTAL SERVICE
                                      AQUEOUS MEDIA
                                      SEDIMENTS
                                      SLUDGES
                                      SOILS
                                                                                       NOT SPECIFIED
                                                                                                                            YES
                                                                                                                                      INP
                                HUNTER BIOSCIENCES,  INC.
                                                                      AQUEOUS MEDIA
                                                       HALOGENATED VOLATILES
                                                       NONHALOGENATED NONVOLATILES
                                                                                                                            YES
                                                                                                                                      INP

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                       TABLE # 2 (CONTINUED)
TREATMENT TECHNOLOGY
ACTIVATED SLUDGE
(continued)
COMPANY NAME
HUNTER BIOSCIENCES, INC.
(continued)
MEDIA TREATED CONTAMINANT GROUPS
NONHALOGENATED VOLATILES
BENCH
SCALE

PILOT
SCALE

HUNTER SERVICES, INC.
SEDIMENTS        DIOXINS/FURANS
SLUDGES          PCBs
SOILS            HALOGENATED NONVOLATILES
                 HALOGENATED VOLATILES
                 NONHALOGENATED NONVOLATILES
                 NONHALOGENATED VOLATILES
                 PESTICIDES
                 NONVOLATILE METALS
                 VOLATILE METALS
                                     YES
                                                                YES
JACOBS ENGINEERING GROUP, INC.
ORGANIC LIQUID
SLUDGES
HALOGENATED NONVOLATILES
HALOGENATED VOLATILES
NONHALOGENATED NONVOLATILES
NONHALOGENATED VOLATILES
                                                      YES
                                                                NO
KEYSTONE ENVIRONMENTAL RESOURCES
                                      AQUEOUS MEDIA
                                                       NONHALOGENATED NONVOLATILES
                                                       HALOGENATED VOLATILES
                                                       HALOGENATED NONVOLATILES
                                                       INORGANIC CYANIDES
                                                      YES
                                                                                                      YES
MCNAMEE ADVANCED TECHNOLOGY,  INC.
AQUEOUS MEDIA
                 HALOGENATED NONVOLATILES
                 HALOGENATED VOLATILES
                 NONHALOGENATED VOLATILES
                 INORGANIC CYANIDES
                 NONHALOGENATED NONVOLATILES
                                                      YES
                                                                YES
O'BRIEN AND GERE ENGINEERS,  INC.
AQUEOUS MEDIA
ORGANIC LIQUID
HALOGENATED NONVOLATILES
HALOGENATED VOLATILES
NONHALOGENATED NONVOLATILES
NONHALOGENATED VOLATILES
REDUCERS
YES
YES
OHM CORPORATION
                                      AQUEOUS MEDIA    DIOXINS/FURANS
                                                                                            YES
                                                                                                      YES

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TREATMENT TECHNOLOGY
                       TABLE # 2 (CONTINUED)

      COMPANY NAME                    MEDIA TREATED
                                                                                          CONTAMINANT GROUPS
                                                      BENCH
                                                      SCALE
                                               PILOT
                                               SCALE
ACTIVATED SLUDGE
(continued)
OHM CORPORATION
(continued)
ORGANIC LIQUID
SLUDGES
OTHER SOLIDS
HALOGENATED NONVOLATILES
HALOGENATED VOLATILES
NONHALOGENATED VOLATILES
NONVOLATILE METALS
NONHALOGENATED NONVOLATILES
PCBS
PESTICIDES
                                RADIAN CORPORATION
                                                                      AQUEOUS MEDIA
                                                                      ORGANIC LIQUID
                                                                      SLUDGES
                                                                      SOILS
                                                                      SEDIMENTS
                                                       NONHALOGENATED VOLATILES
                                                       DIOXINS/FURANS
                                                       HALOGENATED NONVOLATILES
                                                       HALOGENATED VOLATILES
                                                       NONHALOGENATED NONVOLATILES
                                                       ORGANIC CORROSIVES
                                                       ORGANIC CYANIDES
                                                       PCBs
                                                       PESTICIDES
                                                                                                                            YES
                                                                                                                                      YES
                                RMT,  INC.
                                      AQUEOUS MEDIA
                 HALOGENATED NONVOLATILES
                 INORGANIC CORROSIVES
                 NONHALOGENATED NONVOLATILES
                 NONVOLATILE METALS
                 ORGANIC CYANIDES
                 PCBs
                 REDUCERS
                 HALOGENATED VOLATILES
                 INORGANIC CYANIDES
                 NONHALOGENATED VOLATILES
                 ORGANIC CORROSIVES
                 OXIDIZERS
                                                                                                                            YES
                                                                                                                                      YES
                                RNK ENVIRONMENTAL,  INC.
                                      AQUEOUS MEDIA
                                      ORGANIC LIQUID
                 ORGANIC CYANIDES
                 OXIDIZERS
                 NONVOLATILE METALS
                                                                                                                            YES
                                                                                                                                      YES

-------
TREATMENT TECHNOLOGY
                       TABLE # 2 (CONTINUED)

      COMPANY NAME                    MEDIA TREATED       CONTAMINANT GROUPS
                                                                                                                            BENCH     PILOT
                                                                                                                            SCALE     SCALE
ACTIVATED SLUDGE
(continued)
ROY F.  WESTON,  INC.
                                      AQUEOUS  MEDIA
                                      ORGANIC  LIQUID
PESTICIDES
DIOXINS/FURANS
HALOGENATED VOLATILES
NONHALOGENATED VOLATILES
HALOGENATED NONVOLATILES
NONHALOGENATED NONVOLATILES
PCBs
YES       YES
                                SYBRON CHEMICALS,  INC.
                                     AQUEOUS MEDIA
                                     ORGANIC LIQUID
HALOGENATED NONVOLATILES
HALOGENATED VOLATILES
INORGANIC CYANIDES
NONHALOGENATED NONVOLATILES
NONHALOGENATED VOLATILES
NONVOLATILE METALS
ORGANIC CYANIDES
                                                                                                                            YES       YES
                                UNITED STATES TESTING  COMPANY.  INC.    ORGANIC  LIQUID    NOT SPECIFIED
                                VERSAR INC.
                                                                      AQUEOUS  MEDIA     INORGANIC CYANIDES
                                                                                       NONHALOGENATED VOLATILES
                                                                                           YES        NO

                                                                                           YES        NO
                                ZENON ENVIRONMENTAL
                                     SEDIMENTS        DIOXINS/FURANS
                                     SLUDGES          HALOGENATED NONVOLATILES
                                     SOILS            HALOGENATED VOLATILES
                                                      INORGANIC CORROSIVES
                                                      INORGANIC CYANIDES
                                                      NONHALOGENATED NONVOLATILES
                                                      NONHALOGENATED VOLATILES
                                                      ORGANIC CORROSIVES
                                                      ORGANIC CYANIDES
                                                      PCBs
                                                      PESTICIDES
                                                                                           YES        YES
                                ZIMPRO PASSAVANT
                                                                     AQUEOUS MEDIA
                                                                     ORGANIC LIQUID
                                                      HALOGENATED VOLATILES
                                                      NONHALOGENATED VOLATILES
                                                                                                                            YES       YES

-------
TREATMENT TECHNOLOGY
                       TABLE  # 2 (CONTINUED)

      COMPANY NAME                     MEDIA TREATED
                                                                                         CONTAMINANT  GROUPS
                                                      BENCH
                                                      SCALE
                                               PILOT
                                               SCALE
ACTIVATED SLUDGE
(continued)
ZIMPRO PASSAVANT
(continued)
SLUDGES
PESTICIDES
HALOGENATED NONVOLATILES
NONHALOGENATED NONVOLATILES
AEROBIC BIOLOGICAL
                                AEA TECHNOLOGY
                                      AQUEOUS MEDIA
                                      ORGANIC LIQUID
                                      SEDIMENTS
                                      SLUDGES
                                      SOILS
                                                                                       RADIOACTIVE  MATERIALS
                                                                                                                            YES
                                                                                                                                     YES
                                BIOSCIENCE MANAGEMENT,  INC.
                                                                      ORGANIC LIQUID
                                                       DIOXINS/FURANS
                                                       HALOGENATED  NONVOLATILES
                                                       HALOGENATED  VOLATILES
                                                       INORGANIC CYANIDES
                                                       NONHALOGENATED  NONVOLATILES
                                                       NONHALOGENATED  VOLATILES
                                                       ORGANIC CORROSIVES
                                                       ORGANIC CYANIDES
                                                       PCBs
                                                                                                                            YES
                                                                                                                                      YES
                                C-E ENVIRONMENTAL,  INC.
                                      AQUEOUS MEDIA
                                      ORGANIC LIQUID
                 HALOGENATED NONVOLATILES
                 NONHALOGENATED NONVOLATILES
                 HALOGENATED VOLATILES
                 NONHALOGENATED VOLATILES
                 DIOXINS/FURANS
                 PCBs
                                                                                                                            YES
                                                                                                                                      YES
                                C-EE BIOREMEDIATION SYSTEMS
                                      AQUEOUS MEDIA
                                      ORGANIC LIQUID
                 HALOGENATED NONVOLATILES
                 HALOGENATED VOLATILES
                 NONHALOGENATED NONVOLATILES
                 NONHALOGENATED VOLATILES
                 PCBs
                 PESTICIDES
                                                                                                                            YES
                                                                                                                                      NO

-------
TREATMENT TECHNOLOGY
                       TABLE # 2 (CONTINUED)

      COMPANY NAME                     MEDIA TREATED       CONTAMINANT  GROUPS
                                                                                                                            BENCH
                                                                                                                            SCALE
                                                                                                      PILOT
                                                                                                      SCALE
AEROBIC BIOLOGICAL
(continued)
CHEMENCO, INC.
                                                                      AQUEOUS MEDIA
                                                                      ORGANIC LIQUID
                                                       NOT  SPECIFIED
                                                                                            YES
                                                                                                      NO
                                CYTO CULTURE ENVIRON.  BIOTECH.
                                                                      AQUEOUS MEDIA
                                                                      ORGANIC LIQUID
                                                       NONHALOGENATED  VOLATILES
                                                       ORGANIC  CYANIDES
                                                       PCBs
                                                       PESTICIDES
                                                                                            YES
                                                                                                      YES
                                DIVERSIFIED ENGINEERING,  INC.
                                     AQUEOUS  MEDIA
                                     ORGANIC  LIQUID
                                     SLUDGES
                                     SEDIMENTS
HALOGENATED NONVOLATILES
NONVOLATILE METALS
NONHALOGENATED NONVOLATILES
YES       INP
                                E M & C ENGINEERING  ASSOCIATES
                                                                      AQUEOUS MEDIA
                                                                      ORGANIC LIQUID
                                                      DIOXINS/FURANS
                                                      HALOGENATED NONVOLATILES
                                                      HALOGENATED VOLATILES
                                                      INORGANIC CORROSIVES
                                                      INORGANIC CYANIDES
                                                      NONVOLATILE METALS
                                                      ORGANIC CYANIDES
                                                      OXIDIZERS
                                                      PCBs
                                                      PESTICIDES
                                                      REDUCERS
                                                      VOLATILE METALS
                                     INP       INP
                                ENSR -  CELGENE
                                                                     AQUEOUS  MEDIA
                                                                     ORGANIC  LIQUID
                                                      NOT SPECIFIED
                                                                                           YES       YES
                                ENVIRONMENTAL  REMEDIATION,  INC.
                                     AQUEOUS MEDIA
                                     ORGANIC LIQUID
                                     SEDIMENTS
                                     SLUDGES
                                     SOILS
HALOGENATED VOLATILES
NONHALOGENATED VOLATILES
PCBs
PESTICIDES
                                     YES       NO

-------
TREATMENT TECHNOLOGY
                                                       TABLE # 2 (CONTINUED)

                                      COMPANY NAME                    MEDIA TREATED
                    CONTAMINANT GROUPS
                                     BENCH      PILOT
                                     SCALE      SCALE
AEROBIC BIOLOGICAL
(continued)
                                ENVIRONMENTAL RESOURCE ASSOCIATES
NOT SPECIFIED
                                ENVIRONMENTAL TECHNOLOGY SOUTHEAST    AQUEOUS MEDIA
                                ENVIROTECH MID-ATLANTIC
                                ENWRIGHT ENVIRONMENTAL, INC.
                                GENERAL PHYSICS CORPORATION
                                HUNTER BIOSCIENCES, INC.
AQUEOUS MEDIA
ORGANIC LIQUID
AQUEOUS MEDIA
ORGANIC LIQUID
HALOGENATED NONVOLATILES
HALOGENATED VOLATILES
INORGANIC CORROSIVES
HONHALOGENATED NONVOLATILES
NONHALOGENATED VOLAITLES
NONVOLATILE METALS

HALOGENATED NONVOLATILES
HALOGENATED VOLATILES
NONHALOGENATED NONVOLATILES
NONHALOGENATED VOLATILES
NONVOLATILE METALS

HALOGENATED NONVOLATILES
HALOGENATED VOLATILES
NONHALOGENATED NONVOLATILES
NONHALOGENATED VOLATILES
NONVOLATILE METALS

RADIOACTIVE MATERIALS
SEDIMENTS        HALOGENATED NONVOLATILES
SLUDGES          HALOGENATED VOLATILES
SOILS            NONHALOGENATED NONVOLATILES
                 NONHALOGENATED VOLATILES
                 ORGANIC  CORROSIVES
                 ORGANIC  CYANIDES
                 OXIDIZERS
                 REDUCERS
                                                                      AQUEOUS MEDIA
                  HALOGENATED  VOLATILES
                  NONHALOGENATED  NONVOLATILES
                  NONHALOGENATED  VOLATILES
                                                      YES       NO
                                                                                                                            INP       INP
                                                                                                                            YES       YES
                                                                                                                            NO        YES
                                                                                                                            YES       YES
                                                                                                                            YES       INP

-------
TREATMENT TECHNOLOGY
                       TABLE # 2  (CONTINUED)

      COMPANY  NAME                    MEDIA TREATED       CONTAMINANT GROUPS
                                                                                                                           BENCH
                                                                                                                           SCALE
                                               PILOT
                                               SCALE
AEROBIC BIOLOGICAL
(continued)
INTERNATIONAL  PROCESS RESEARCH CORP
                                     AQUEOUS MEDIA
                                     ORGANIC LIQUID
HALOGENAT ED NONVOLAT ILES
HALOGENATED VOLATILES
INORGANIC CORROSIVES
INORGANIC CYANIDES
NONHALOGENATED VOLATILES
NONVOLATILE METALS
ORGANIC CORROSIVES
ORGANIC CYANIDES
OXIDIZERS
REDUCERS
                                                                                           YES
                                                                                                     YES
                                IT CORPORATION
                                JACOBS ENGINEERING GROUP,  INC.
                                                                     AQUEOUS MEDIA    NONHALOGENATED NONVOLATILES
                                     AQUEOUS MEDIA
                                     ORGANIC LIQUID
HALOGENATED VOLATILES
HALOGENATED NONVOLATILES
NONHALOGENATED NONVOLATILES
NONHALOGENATED VOLATILES
                                                                                           YES

                                                                                           YES
                                               NO

                                               YES
                                KEYSTONE  ENVIRONMENTAL RESOURCES
                                MCNAMEE ADVANCED TECHNOLOGY, INC.
                                                                     AQUEOUS MEDIA
                                     AQUEOUS MEDIA
                                     SLUDGES
NONHALOGENATED NONVOLATILES
HALOGENATED NONVOLATILES
HALOGENATED VOLATILES
INORGANIC CYANIDES

HALOGENATED NONVOLATILES
HALOGENATED VOLATILES
NONHALOGENATED VOLATILES
INORGANIC CYANIDES
NONHALOGENATED NONVOLATILES
                                                                                                                           YES
                                                                                                                                     YES
                                                                                           YES
                                                                                                                                     YES
                                O'BRIEN AND GERE ENGINEERS, INC.
                                     AQUEOUS MEDIA
                                     ORGANIC LIQUID
HALOGENATED NONVOLATILES
HALOGENATED VOLATILES
NONHALOGENATED NONVOLATILES
NONHALOGENATED VOLATILES
REDUCERS
                                                                                                                           YES
                                                                                                                                     YES

-------
TREATMENT TECHNOLOGY
                                                       TABLE # 2 (CONTINUED)

                                      COMPANY NAME                    MEDIA TREATED
                    CONTAMINANT GROUPS
                                     BENCH     PILOT
                                     SCALE     SCALE
AEROBIC BIOLOGICAL
(continued)
                                OHM CORPORATION
                                PEI ASSOCIATES, INC.
SOILS
ORGANIC LIQUID
SLUDGES
                                                                      SOILS
DIOXINS/FURANS
HALOGENATED NONVOLATILES
HALOGENATED VOLATILES
NONHALOGENATED VOLATILES
NONVOLATILE METALS
NONHALOGENATED NONVOLATILES
PCBS
PESTICIDES

HALOGENATED VOLATILES
NONHALOGENATED VOLATILES
VOLATILE METALS
NONVOLATILE METALS
                                                      YES       YES
                                                                                                                            INP
                                                                                                                                      INP
                                RIVER OAK ASSOCIATES
                                RMT, INC.
                                RNK ENVIRONMENTAL, INC.
AQUEOUS MEDIA
ORGANIC LIQUID
AQUEOUS MEDIA
ORGANIC LIQUID
SLUDGES
SOILS
AQUEOUS MEDIA
ORGANIC LIQUID
HALOGENATED NONVOLATILES
HALOGENATED VOLATILES
NONHALOGENATED NONVOLATILES
NONHALOGENATED VOLATILES

HALOGENATED NONVOLATILES
NONHALOGENATED NONVOLATILES
HALOGENATED VOLATILES
NONHALOGENATED VOLATILES
ORGANIC CYANIDES

NONVOLATILE METALS
OXIDIZERS
REDUCERS
NONHALOGENATED NONVOLATILES
                                                                                                                            YES
                                                                                                                                      NO
                                                                                                                            YES
                                                                                                                                      YES
                                                                                                                            YES
                                                                                                                                      YES
                                RODNEY KINNEY ASSOCIATES
AQUEOUS MEDIA    OXIDIZERS
ORGANIC LIQUID   PCBs
                 REDUCERS
                                                                                                                             INP
                                                                                                                                       INP
                                ROY F. WESTON, INC.
                                                                      AQUEOUS MEDIA
                                                                                       PESTICIDES
                                                                                                                             YES
                                                                                                                                       NO

-------
TREATMENT TECHNOLOGY
                                                       TABLE # 2 (CONTINUED)

                                      COMPANY NAME                    MEDIA TREATED       CONTAMINANT GROUPS
                                                                                            BENCH
                                                                                            SCALE
                                                                PILOT
                                                                SCALE
AEROBIC BIOLOGICAL
(continued)
ROY F.  WESTON,  INC.
(continued)
ORGANIC LIQUID
SOILS
SEDIMENTS
DIOXINS/FURANS
HALOGENATED VOLATILES
NONHALOGENATED VOLATILES
HALOGENATED NONVOLATILES
NONHALOGENATED NONVOLATILES
PCBs
                                SYBRON CHEMICALS,  INC.
                                      ORGANIC  LIQUID
                                      AQUEOUS  MEDIA
                 HALOGENATED NONVOLATILES
                 HALOGENATED VOLATILES
                 INORGANIC CYANIDES
                 NONHALOGENATED NONVOLATILES
                 NONHALOGENATED VOLATILES
                 NONVOLATILE METALS
                 ORGANIC CYANIDES
                                                                                            YES
                                                                                                                                      YES
                                TREATEK,  INC.
                                     AQUEOUS MEDIA
                                     ORGANIC LIQUID
                                     SEDIMENTS
                                     SLUDGES
                                     SOILS
                 HALOGENATED NONVOLATILES
                 HALOGENATED VOLATILES
                 NONHALOGENATED NONVOLATILES
                 NONHALOGENATEO VOLATILES
                 NONVOLATILE METALS
                 PCBs
                 PESTICIDES
                                                                                                                            YES
                                                                                                                                      YES
                                WASTE STREAM TECHNOLOGY,  INC.
                                     AQUEOUS MEDIA
                                     ORGANIC LIQUID
                 HALOGENATED NONVOLATILES
                 HALOGENATED VOLATILES
                 NONHALOGENATED NONVOLATILES
                 NONHALOGENATED VOLATILES
                                                                                                                            INP
                                                                                                                                      INP
                                UESTERN RESEARCH  INSTITUTE
                                     AQUEOUS MEDIA
                                     ORGANIC LIQUID
                 INORGANIC CYANIDES
                 NONHALOGENATED NONVOLATILES
                 NONVOLATILE METALS
                 ORGANIC CYANIDES
                                                                                           YES
                                                                                                     YES
                                WOODWARD  CLYDE  CONSULTANTS
                                                                     AQUEOUS MEDIA
                                                                     ORGANIC LIQUID
                                                                                      NOT SPECIFIED
                                                                                                                            YES
                                                                                                                                      YES

-------
TREATMENT TECHNOLOGY
                                                       TABLE # 2 (CONTINUED)

                                      COMPANY  NAME                     MEDIA TREATED
                    CONTAMINANT GROUPS
                                     BENCH     PILOT
                                     SCALE     SCALE
AEROBIC BIOLOGICAL
(continued)
                                YEC INC

                                ZIMPRO PASSAVANT
                                                                      NOT  SPECIFIED     NOT  SPECIFIED
                                                                      AQUEOUS  MEDIA
                                                                      ORGANIC  LIQUID
                 HALOGENATED VOLATILES
                 NONHALOGENATED VOLATILES
                 HALOGENATED NONVOLATILES
                 NONHALOGENATED NONVOLATILES
                                                      YES

                                                      YES
                                               YES

                                               YES
ANAEROBIC BIOLOGICAL
                                C-EE BIOREMEDIATION SYSTEMS
                                CAMBRIDGE  SCIENTIFIC,  INC.

                                CHEMENCO,  INC.


                                DETOX,  INC.
                                DIVERSIFIED ENGINEERING,  INC.
ORGANIC LIQUID
AQUEOUS MEDIA
NOT SPECIFIED

AQUEOUS MEDIA
ORGANIC LIQUID

AQUEOUS MEDIA
ORGANIC LIQUID
SEDIMENTS
SLUDGES
SOILS
AQUEOUS MEDIA
ORGANIC LIQUID
SEDIMENTS
HALOGENATED NONVOLATILES
HALOGENATED VOLATILES
NONHALOGENATED NONVOLATILES
NONHALGENATED VOLATILES
PCBs
PESTICIDES

HALOGENATED VOLATILES

NOT SPECIFIED
HALOGENATED VOLATILES
HALOGENATED NONVOLATILES
NONHALOGENATED VOLATILES
NONHALOGENATED NONVOLATILES
PESTICIDES
DIOXINS/FURANS
ORGANIC CYANIDES
ORGANIC CORROSIVES
VOLATILE METALS
NONVOLATILE METALS

HALOGENATED NONVOLATILES
NONVOLATILE METALS
NONHALOGENATED NONVOLATILES
                                                                                                                            YES
                                                                                                                                      NO
INP       INP

YES       NO


YES       YES
                                                                                                                            YES
                                                                                                                                      INP

-------
TREATMENT TECHNOLOGY
                                      COMPANY NAME
                       TABLE # 2 (CONTINUED)

                                      MEDIA TREATED
                                                                                          CONTAMINANT GROUPS
                                                                                                                            BENCH
                                                                                                                            SCALE
                                                                                                      PILOT
                                                                                                      SCALE
ANAEROBIC BIOLOGICAL
(continued)
DIVERSIFIED ENGINEERING,  INC.
(continued)
                                                                      SLUDGES
                                E M & C ENGINEERING ASSOCIATES
                                                                      AQUEOUS MEDIA
                                                                      ORGANIC LIQUID
                                                       DIOX1NS/FURANS
                                                       HALOGENATED  NONVOLATILES
                                                       HALOGENATED  VOLATILES
                                                       INORGANIC  CORROSIVES
                                                       INORGANIC  CYANIDES
                                                       NONVOLATILE  METALS
                                                       ORGANIC  CYANIDES
                                                       OXIDIZERS
                                                       PCBs
                                                       PESTICIDES
                                                       REDUCERS
                                                       VOLATILE METALS
                                                                                                                            INP
                                                                                                                                      1NP
                                ENSR -  CELGENE
                                                                      AQUEOUS  MEDIA
                                                                      ORGANIC  LIQUID
                                                                                       NOT  SPECIFIED
                                                                                           YES       YES
                                ENVIROTECH MID-ATLANTIC
                                                                      AQUEOUS  MEDIA
                                                                      ORGANIC  LIQUID
                                                      HALOGENATED NONVOLATILES
                                                      HALOGENATED VOLATILES
                                                      NONHALOGENATED NONVOLATILES
                                                      NONHALOGENATED VOLATILES
                                                      NONVOLATILE METALS
                                                                                                                            YES        YES
                                ENWRIGHT  ENVIRONMENTAL,  INC.
                                     AQUEOUS MEDIA
                                     ORGANIC LIQUID
RADIOACTIVE MATERIALS
                                                                                           YES       YES
                                GENERAL  PHYSICS  CORPORATION
                                                                     AQUEOUS MEDIA
                                                                     ORGANIC LIQUID
                                                      HALOGENATED NONVOLATILES
                                                      HALOGENATED VOLATILES
                                                      NONHALOGENATED NONVOLATILES
                                                      NONHALOGENATED VOLATILES
                                                      ORGANIC CORROSIVES
                                                      ORGANIC CYANIDES
                                                      OXIDIZERS
                                                      REDUCERS
                                                                                                                            YES       YES

-------
TREATMENT TECHNOLOGY
                 TABLE # 2 (CONTINUED)

COMPANY NAME                    MEDIA TREATED
                                                                                          CONTAMINANT GROUPS
                                     BENCH
                                     SCALE
PILOT
SCALE
ANAEROBIC BIOLOGICAL
(continued)
                                INTERNATIONAL  PROCESS RESEARCH  CORP
                                AQUEOUS MEDIA
                                ORGANIC LIQUID
HALOGENATED NONVOLATILES
HALOGENATED VOLATILES
INORGANIC CORROSIVES
INORGANIC CYANIDES
NONHALOGENATED VOLATILES
NONVOLATILE METALS
ORGANIC CORROSIVES
ORGANIC CYANIDES
OXIDIZERS
REDUCERS
                                                                                                                           YES
                                                                                                                                     YES
                                MCNAMEE ADVANCED TECHNOLOGY,  INC.
                                AQUEOUS MEDIA
                                SLUDGES
HALOGENATED NONVOLATILES
HALOGENATED VOLATILES
NONHALOGENATED VOLATILES
NONHALOGENATED NONVOLATILES
                                                                                                                            YES        YES
                                O'BRIEN AND GERE ENGINEERS,  INC.
                                OHM CORPORATION
                                AQUEOUS MEDIA
                                ORGANIC LIQUID

                                AQUEOUS MEDIA
                                ORGANIC LIQUID
                                SLUDGES
                                                                                       NONHALOGENATED  NONVOLATILES
DIOXINS/FURANS
HALOGENATED NONVOLATILES
HALOGENATED VOLATILES
NONHALOGENATED VOLATILES
NONVOLATILE METALS
NONHALOGENATED NONVOLATILES
PCBs
PESTICIDES
                                                                                                                            YES       YES
                                                                                                                            YES       YES
                                RADIAN CORPORATION
                                AQUEOUS MEDIA
                                ORGANIC LIQUID
                                SLUDGES
                                SOILS
                                SEDIMENTS
DIOXINS/FURANS
HALOGENATED NONVOLATILES
HALOGENATED VOLATILES
NONHALOGENATED NONVOLATILES
NONHALOGENATED VOLATILES
ORGANIC CORROSIVES
                                                                                                                            YES       YES

-------
TREATMENT TECHNOLOGY
                       TABLE # 2 (CONTINUED)

      COMPANY NAME                    MEDIA TREATED       CONTAMINANT GROUPS
                                                                                                                            BENCH     PILOT
                                                                                                                            SCALE     SCALE
ANAEROBIC BIOLOGICAL
(continued)
RADIAN CORPORATION
(continued)
                                                                                       ORGANIC CYANIDES
                                                                                       PCBs
                                                                                       PESTICIDES
                                REMEDIATION TECHNOLOGIES
                                                                      AQUEOUS MEDIA
                                                                      ORGANIC LIQUID
                                                       HALOGENATED NONVOLATILES
                                                       HALOGENATED VOLATILES
                                                       NONHALOGENATED  NONVOLATILES
                                                       NONHALOGENATED  VOLATILES
                                                       ORGANIC CORROSIVES
                                                       ORGANIC CYANIDES
                                                                                            YES       NO
                                RIVER OAK ASSOCIATES
                                                                      AQUEOUS MEDIA
                                                                      ORGANIC LIQUID
                                                       HALOGENATED  NONVOLATILES
                                                       HALOGENATED  VOLATILES
                                                       NONHALOGENATED  NONVOLATILES
                                                       NONHALOGENATED  VOLATILES
                                     YES       NO
                                RMT, INC.
                                      AQUEOUS MEDIA
                                      ORGANIC LIQUID
                                      SLUDGES
                                      SEDIMENTS
                                      SOILS
HALOGENATED NONVOLATILES
NONHALOGENATED NONVOLATILES
HALOGENATED VOLATILES
NONHALOGENATED VOLATILES
                                     YES       YES
                                RNK ENVIRONMENTAL,  INC.
                                     NOT SPECIFIED
                                                      ORGANIC CYANIDES
                                                      NONVOLATILE METALS
                                     YES       YES
                                RODNEY KINNEY  ASSOCIATES
                                                                      AQUEOUS  MEDIA     OXIDIZERS
                                                                      ORGANIC  LIQUID    PCBs
                                                                                       REDUCERS
                                                                                            INP        INP
                                ROY  F.  WESTON,  INC.
                                     AQUEOUS MEDIA
                                     ORGANIC LIQUID
PESTICIDES
DIOXINS/FURANS
HALOGENATED VOLATILES
NONHALOGENATED VOLATILES
HALOGENATED NONVOLATILES
NONHALOGENATED NONVOLATILES
YES       YES

-------
 TREATMENT  TECHNOLOGY
                                      COMPANY NAME
                       TABLE # 2 (CONTINUED)

                                      MEDIA TREATED
                                                                                          CONTAMINANT GROUPS
                                                                                                                            BENCH
                                                                                                                            SCALE
                                                                                                      PILOT
                                                                                                      SCALE
ANAEROBIC BIOLOGICAL
(continued)
ROY F. WESTON,  INC.
(continued)

UNITED STATES TESTING COMPANY,  INC.
                                                                      ORGANIC LIQUID
                                                                      OTHER SOLIDS
                                                                                       PCBS
                                                                                       NOT SPECIFIED
                                                                                                                            YES       NO
                                VERSAR INC.
                                                                      AQUEOUS MEDIA
                                                                                       NONHALOGENATED NONVOLATILES
                                                                                       NONHALOGENATED VOLATILES
                                                                                       ORGANIC CYANIDES
                                                                                       PESTICIDES
                                                                                            YES       NO
                                WESTERN RESEARCH INSTITUTE
                                                                      AQUEOUS MEDIA
                                                                      ORGANIC LIQUID
                                                       INORGANIC CYANIDES
                                                       NONHALOGENATED NONVOLATILES
                                                       NONVOLATILE METALS
                                                       ORGANIC CYANIDES
                                                                                                                            YES
                                                                                                                                      YES
                                YEC INC

                                ZIMPRO PASSAVANT
                                      NOT SPECIFIED    NOT SPECIFIED
                                                                      AQUEOUS MEDIA
                                                                      ORGANIC LIQUID
                                                       HALOGENATED  VOLATILES
                                                       NONHALOGENATED VOLATILES
                                                       HALOGENATED  NONVOLATILES
                                                       NONHALOGENATED NONVOLATILES
                                                                                            YES

                                                                                            YES
                                               YES

                                               YES
BIODEGRADATION-AQUEOUS PHASE    BIOTROL, INC.
                                      AQUEOUS MEDIA
                                                       HALOGENATED NONVOLATILES
                                                       HALOGENATED VOLATILES
                                                       NONHALOGENATED NONVOLATILES
                                                       NONHALOGENATED VOLATILES
                                                                                            YES
                                                                                                      YES
BIODEGRADATION-COMPOSTING
                                BIOSCIENCE MANAGEMENT, INC.
                                      ORGANIC LIQUID
                                      SOILS
                                      SLUDGES
DIOXINS/FURANS
HALOGENATED NONVOLATILES
HALOGENATED VOLATILES
INORGANIC CYANIDES
NONHALOGENATED NONVOLATILES
NONHALOGENATED VOLATILES
                                                                                            YES
                                                                                                      YES

-------
TREATMENT TECHNOLOGY
                       TABLE # 2 (CONTINUED)

      COMPANY NAME                    MEDIA TREATED       CONTAMINANT GROUPS
                                                                                                                            BENCH     PILOT
                                                                                                                            SCALE     SCALE
BIODEGRADATION-COMPOST ING
(continued)
BIOSCIENCE MANAGEMENT,  INC.
(continued)
                                CYTO CULTURE ENVIRON.  BIOTECH.
                                                       ORGANIC CORROSIVES
                                                       ORGANIC CYANIDES
                                                       PCBs

                                      SEDIMENTS         NONHALOGENATED  VOLATILES
                                      SLUDGES           ORGANIC CYANIDES
                                      SOILS             PCBs
                                                       PESTICIDES
                                                                                                                            YES
                                                                                                                                      YES
                                DETOX,  INC.
                                ENSR  -  CELGENE
                                ENVIRONMENTAL REMEDIATION, INC.
                                     AQUEOUS  MEDIA
                                     ORGANIC  LIQUID
                                     SEDIMENTS
                                     SLUDGES
                                     SOILS
SEDIMENTS
SLUDGES
SOILS

AQUEOUS MEDIA
ORGANIC LIQUID
SEDIMENTS
SLUDGES
SOILS
HALOGENATED VOLATILES
HALOGENATED NONVOLATILES
NONHALOGENATED VOLATILES
NONHALOGENATED NONVOLATILES
PESTICIDES
DIOXINS/FURANS
ORGANIC CYANIDES
ORGANIC CORROSIVES
VOLATILE METALS
NONVOLATILE METALS

NOT SPECIFIED
                                                      HALOGENATED VOLATILES
                                                      NONHALOGENATED VOLATILES
                                                      PCBS
                                                      PESTICIDES
YES
          YES
                                                                                                                           YES       YES
YES       NO
                               ENVIRONMENTAL TECHNOLOGY SOUTHEAST
                                                                     SEDIMENTS        HALOGENATED NONVOLATILES
                                                                     SLUDGES          HALOGENATED VOLATILES
                                                                     SOILS            NONHALOGENATED NONVOLATILES
                                                                                      NONHALOGENATED VOLATILES
                                                                                      NONVOLATILE METALS
                                                                                           INP       INP

-------
           TREATMENT TECHNOLOGY
                                                                  TABLE # 2 (CONTINUED)

                                                 COMPANY NAME                    MEDIA TREATED
                    CONTAMINANT  GROUPS
                                                      BENCH     PILOT
                                                      SCALE     SCALE
           BIODEGRADATION-COMPOST ING
           (continued)
ro
•o
                                           FORMULA ENVIRONMENTAL COMPANY
                                           MCNAMEE ADVANCED TECHNOLOGY, INC.
                                           RMT, INC.
                                           RNK ENVIRONMENTAL, INC.
                                           ROY f. WESTON, INC.
                                                                                                  NOT SPECIFIED
                 HALOGENATED NONVOLATILES
                 HALOGENATED VOLATILES
                 NONHALOGENATED NONVOLATILES
                 NONHALOGENATED VOLATILES

                 NOT SPECIFIED
SLUDGES
OTHER SOLIDS

SLUDGES
SOILS
SEDIMENTS
SLUDGES
SOILS
SEDIMENTS        ORGANIC CORROSIVES
SLUDGES          ORGANIC CYANIDES
SOILS            HALOGENATED VOLATILES
OTHER SOLIDS     REDUCERS
                 PESTICIDES
                 NONHALOGENATED NONVOLATILES
                 HALOGENATED NONVOLATILES
                 OXIDIZERS
                 PCBs

SEDIMENTS        PESTICIDES
SLUDGES          DIOXINS/FURANS
SOILS            HALOGENATED VOLATILES
                 HALOGENATED NONVOLATILES
                 NONHALOGENATED NONVOLATILES
                 NONHALOGENATED VOLATILES
                 PCBS
                                           UNITED STATES TESTING COMPANY,  INC.   ORGANIC LIQUID   NOT SPECIFIED
                                                                                 OTHER SOLIDS
                                                                                                                                       YES       NO
                                                                                                                                       YES       YES
                                                                                                                                       YES       YES
                                                                                                                                       YES       YES
                                                                                                                                       YES       YES
                                                                                                                                       YES       NO
                                           WASTE STREAM TECHNOLOGY,  INC.
                                                                                 OTHER SOLIDS
                                                                                                  HALOGENATED  NONVOLATILES
                                                                                                                                        YES        YES

-------
TREATMENT TECHNOLOGY
                                                       TABLE # 2 (CONTINUED)

                                      COMPANY NAME                    MEDIA TREATED       CONTAMINANT GROUPS
                                                                                            BENCH      PILOT
                                                                                            SCALE      SCALE
BIODEGRADATION-COMPOST ING
(continued)
WASTE STREAM TECHNOLOGY,  INC.
(continued)
SEDIMENTS        HALOGENATED VOLATILES
SLUDGES          NONHALOGENATED NONVOLATILES
SOILS            NONHALOGENATED VOLATILES
BIODEGRADATION-LAND FARMING     BIOTROL, INC.
                                                                      SOILS
                                                       HALOGENATED  NONVOLATILES
                                                       NONHALOGENATED  VOLATILES
                                                                                                                            YES
                                                                                                                                      YES
                                EARTH TECHNOLOGY CORP.
                                TREATEK, INC.
SEDIMENTS
SLUDGES
SOILS

SOILS
SLUDGES
SEDIMENTS
                                                                                       NONHALOGENATED NONVOLATILES
                                                       NONHALOGENATED VOLATILES
                                                       HALOGENATED VOLATILES
                                                                                                                            YES
                                                                                                                            YES
                                                                                                                                      NO
                                                                                                                                      YES
BIODEGRADATION-NOS
                                BIOSCIENCE MANAGEMENT,  INC.
                                C-E ENVIRONMENTAL,  INC.
SLUDGES
SOILS
ORGANIC LIQUID

AQUEOUS MEDIA
                                                                                       NOT  SPECIFIED
                                                       HALOGENATED VOLATILES
                                                       NONHALOGENATED VOLATILES
                                                                                                                            YES
                                                                                                                            YES
                                                                                                                                      YES
                                                                                                                                      YES
                                CHEMENCO, INC.
                                CYTO CULTURE ENVIRON.  BIOTECH.
                                     SOILS            NOT SPECIFIED
                                     SEDIMENTS
                                     OTHER  SOLIDS
                                     SLUDGES

                                     SEDIMENTS        NONHALOGENATED VOLATILES
                                     SLUDGES          ORGANIC CYANIDES
                                     SOILS            PCBs
                                                      PESTICIDES
                                                                                                                            YES
                                                                                                                                      NO
                                                                                                                            YES
                                                                                                                                      YES
                                E M & C ENGINEERING ASSOCIATES
                                                                      SLUDGES
                                                      DIOXINS/FURANS
                                                                                                                            IMP
                                                                                                                                      INP

-------
TREATMENT TECHNOLOGY
                       TABLE # 2 (CONTINUED)

      COMPANY NAME                    MEDIA TREATED       CONTAMINANT  GROUPS
                                                                                                                            BENCH
                                                                                                                            SCALE
                                               PILOT
                                               SCALE
BIODEGRADATION-NOS
(continued)
E M & C ENGINEERING ASSOCIATES
(continued)
                                ENSOTECH,  INC.
                                                                      OTHER  SOLIDS
                                                                      SOILS
                                      ORGANIC LIQUID
                                      AQUEOUS MEDIA
HALOGENATED NONVOLATILES
HALOGENATED VOLATILES
INORGANIC CORROSIVES
INORGANIC CYANIDES
NONVOLATILE METALS
ORGANIC CYANIDES
OXIDIZERS
PCBs
PESTICIDES
REDUCERS
VOLATILE METALS

HALOGENATED NONVOLATILES
HALOGENATED VOLATILES
INORGANIC CORROSIVES
INORGANIC CYANIDES
NONHALOGENATED NONVOLATILES
NONHALOGENATED VOLATILES
NONVOLATILE METALS
OXIDIZERS
REDUCERS
                                                                                            YES
                                                                                                      YES
                                ENSOTECH,  INC.
                                GROUNDWATER &  ENVIRONMENTAL SERVICE
                                      OTHER  SOLIDS     HALOGENATED NONVOLATILES
                                      SEDIMENTS        HALOGENATED VOLATILES
                                      SLUDGES          INORGANIC CORROSIVES
                                      SOILS             INORGANIC CYANIDES
                                                       NONHALOGENATED  NONVOLATILES
                                                       NONHALOGENATED  VOLATILES
                                                       NONVOLATILE METALS
                                                       OXIDIZERS
                                                       REDUCERS
                                                                                            YES
                                                                                                      YES
                                                                     AQUEOUS  MEDIA
                                                                     SEDIMENTS
                                                                     SLUDGES
                                                                                       NOT  SPECIFIED
                                                                                                                            INP
                                                                                                      IMP

-------
TREATMENT TECHNOLOGY
                       TABLE # 2 (CONTINUED)

      COMPANY NAME                    MEDIA TREATED
                                                                                          CONTAMINANT GROUPS
                                     BENCH     PILOT
                                     SCALE     SCALE
BIODEGRADATION-NOS
(continued)
GROUNDWATER & ENVIRONMENTAL SERVICE
(continued)                           SOILS
                                HARMON ENVIRONMENTAL SERVICES,  INC.    AQUEOUS  MEDIA    NOT  SPECIFIED
                                                                      SOILS
                                                                                                                            YES        YES
                                INTERNATIONAL PROCESS RESEARCH  CORP   SOILS
                                                                                       HALOGENATED  NONVOLATILES
                                                                                       HALOGENATED  VOLATILES
                                                                                       INORGANIC  CORROSIVES
                                                                                       INORGANIC  CYANIDES
                                                                                       NONHALOGENATED  VOLATILES
                                                                                       NONVOLATILE  METALS
                                                                                       ORGANIC  CORROSIVES
                                                                                       ORGANIC  CYANIDES
                                                                                       OXID1ZERS
                                                                                       REDUCERS
                                                                                                                            YES        YES
                                MIDWEST  RESEARCH  INSTITUTE
                                                                      SOILS             HALOGENATED  NONVOLATILES
                                                                      SLUDGES           HALOGENATED  VOLATILES
                                                                      SEDIMENTS         NONHALOGENATED NONVOLATILES
                                                                      OTHER SOLIDS      NONHALOGENATED VOLATILES
                                                                                       ORGANIC  CORROSIVES
                                                                                       ORGANIC  CYANIDES
                                                                                       PCBs
                                                                                            YES        YES
                                O'BRIEN  AND  GERE  ENGINEERS,  INC.
                                     SEDIMENTS
                                     SLUDGES
                                     SOILS
NONHALOGENATED NONVOLATILES
NONHALOGENATED VOLATILES
                                                                                                                           YES       YES
                                OHM  CORPORATION
                                                                     SOILS
                                                                     ORGANIC LIQUID
                                                                     OTHER SOLIDS
                                                                     AQUEOUS MEDIA
                                                      DIOXINS/FURANS
                                                      HALOGENATED NONVOLATILES
                                                      HALOGENATED VOLATILES
                                                      NONHALOGENATED VOLATILES
                                                      NONVOLATILE METALS
                                                      NONHALOGENATED NONVOLATILES
                                                      PCBs
                                                                                                                           YES       YES

-------
                       TABLE  # 2  (CONTINUED)
TREATMENT TECHNOLOGY
BIODEGRADATION-NOS
(continued)
COMPANY NAME
OHM CORPORATION
(continued)
MEDIA TREATED CONTAMINANT GROUPS
PESTICIDES
BENCH
SCALE

PILOT
SCALE

OHM CORPORATION
AQUEOUS MEDIA
ORGANIC LIQUID
RMT, INC.
                                      AQUEOUS MEDIA
RNK ENVIRONMENTAL,  INC.               AQUEOUS MEDIA
                                      ORGANIC LIQUID
                                      SEDIMENTS
                                      OTHER SOLIDS
                                      SOILS
UNITED STATES TESTING COMPANY, INC.   NOT SPECIFIED

ZENON ENVIRONMENTAL                   SEDIMENTS
                                      SLUDGES
                                      SOILS
HALOGENATED VOLATILES
HALOGENATED NONVOLATILES
NONHALOGENATED VOLATILES
NONHALOGENATED NONVOLATILES
NONVOLATILE METALS
PESTICIDES
PCBs

NONHALOGENATED NONVOLATILES
NONHALOGENATED VOLATILES
PESTICIDES
HALOGENATED NONVOLATILES
ORGANIC CORROSIVES
HALOGENATED VOLATILES

ORGANIC CORROSIVES
NONHALOGENATED NONVOLATILES
NONHALOGENATED VOLATILES
                 NOT SPECIFIED

                 DIOXINS/FURANS
                 HALOGENATED NONVOLATILES
                 HALOGENATED VOLATILES
                 INORGANIC CORROSIVES
                 INORGANIC CYANIDES
                 NONHALOGENATED NONVOLATILES
                 NONHALOGENATED VOLATILES
                 NONVOLATILE METALS
                 ORGANIC CORROSIVES
                 ORGANIC CYANIDES
                                                                                           YES
                                                                                                     YES
                                                                                            YES
                                                                                                      YES
                                                                                            YES
                                                                                                      YES
                                     INP

                                     YES
INP

YES

-------
TREATMENT TECHNOLOGY
                       TABLE  # 2 (CONTINUED)

      COMPANY NAME                     MEDIA TREATED       CONTAMINANT GROUPS
                                     BENCH     PILOT
                                     SCALE     SCALE
BIODEGRADATION-NOS
(continued)
ZENON ENVIRONMENTAL
(continued)
PCBs
PESTICIDES
BIODEGRADATION-SLURRY PHASE
                                BIOSCIENCE MANAGEMENT,  INC.
                                                                      ORGANIC LIQUID
                                                       DIOXINS/FURANS
                                                       HALOGENATED  NONVOLATILES
                                                       HALOGENATED  VOLATILES
                                                       INORGANIC CYANIDES
                                                       NONHALOGENATED NONVOLATILES
                                                       NONHALOGENATED VOLATILES
                                                       ORGANIC CORROSIVES
                                                       ORGANIC CYANIDES
                                                       PCBs
                                                                                                                            YES       YES
                                BIOTROL,  INC.
                                C-E ENVIRONMENTAL,  INC.
                                     AQUEOUS MEDIA
                                     SLUDGES
                                      SLUDGES
                                      SOILS
HALOGENATED VOLATILES
NONVOLATILE METALS
NONHALOGENATED VOLATILES

NOT SPECIFIED
                                                                                                                            YES       YES
                                                                                                                            YES       YES
                                DETOX. INC.
                                     AQUEOUS MEDIA
                                     ORGANIC LIQUID
                                     SEDIMENTS
                                     SLUDGES
                                     SOILS
HALOGENATED VOLATILES
HALOGENATED NONVOLATILES
NONHALOGENATED VOLATILES
NONHALOGENATED NONVOLATILES
PESTICIDES
DIOXINS/FURANS
ORGANIC CYANIDES
ORGANIC CORROSIVES
VOLATILE METALS
NONVOLATILE METALS
                                                                                                                            YES       YES
                                ENSR - CELGENE
                                                                      SEDIMENTS
                                                                      SLUDGES
                                                                      SOILS
                                                                                       NOT  SPECIFIED
                                                                                                                            YES
                                                                                                                                      YES

-------
TREATMENT TECHNOLOGY
                 TABLE # 2 (CONTINUED)

COMPANY NAME                    MEDIA TREATED
                                                                                          CONTAMINANT  GROUPS
                                     BENCH
                                     SCALE
PILOT
SCALE
BIODEGRADATION-SLURRY PHASE
(continued)
                                ENVIRONMENTAL  REMEDIATION,  INC.
                                AQUEOUS MEDIA
                                ORGANIC LIQUID
                                SEDIMENTS
                                SLUDGES
                                SOILS
HALOGENATED VOLATILES
NONHALOGENATED VOLATILES
PCBs
PESTICIDES
                                                                                                                            YES
                                                                                                                                      YES
                                ENVIRONMENTAL  TECHNOLOGY  SOUTHEAST
                                SEDIMENTS        HALOGENATED NONVOLATILES
                                SLUDGES          HALOGENATED VOLATILES
                                SOILS            NONHALOGENATED NONVOLATILES
                                                 NONHALOGENATED VOLATILES
                                                 NONVOLATILE METALS
                                                                                                                            INP       INP
                                ENVIROTECH  MID-ATLANTIC
                                SEDIMENTS        HALOGENATED NONVOLATILES
                                SLUDGES          HALOGENATED VOLATILES
                                SOILS            NONHALOGENATED NONVOLATILES
                                                 NONHALOGENATED VOLATILES
                                                 NONVOLATILE METALS
                                                                                                                            YES       YES
                                ENURIGHT  ENVIRONMENTAL,  INC.
                                SEDIMENTS
                                SLUDGES
                                SOILS
                                                                                       RADIOACTIVE MATERIALS
                                                                                                                            YES
                                                                                                                                      YES
                                KEYSTONE ENVIRONMENTAL RESOURCES
                                                                      SOILS
                                                                      SEDIMENTS
                                                                                       NONHALOGENATED NONVOLATILES
                                                                                                                            YES
                                                                                                                                      NO
                                HCNAMEE ADVANCED TECHNOLOGY,  INC.
                                SLUDGES
                                SOILS
HALOGENATED NONVOLATILES
HALOGENATED VOLATILES
NONHALOGENATED NONVOLATILES
NONHALOGENATED VOLATILES
                                                                                                                            YES
                                                                                                                                      YES
                                REMEDIATION TECHNOLOGIES
                                                                      SOILS
                                                                      SLUDGES
                                                                      SEDIMENTS
                                                                      OTHER SOLIDS
                                                 NONHALOGENATED VOLATILES
                                                 HALOGENATED NONVOLATILES
                                                 HALOGENATED VOLATILES
                                                 ORGANIC CORROSIVES
                                                                                                                            YES
                                                                                                                                      NO

-------
TREATMENT TECHNOLOGY
                       TABLE # 2 (CONTINUED)

      COMPANY NAME                     MEDIA TREATED
                                                                                          CONTAMINANT GROUPS
                                                      BENCH
                                                      SCALE
PILOT
SCALE
BIODEGRADATION-SLURRY PHASE
(continued)
REMEDIATION TECHNOLOGIES
(continued)
ORGANIC LIQUID   ORGANIC CYANIDES
                                RMT, INC.
                                      SEDIMENTS
                                      SLUDGES
                                      SOILS
                                      AQUEOUS  MEDIA
                                                                                       NONHALOGENATED NONVOLATILES
                                                                                                                            YES
                                                                                                                                      NO
                                ROY F. WESTON,  INC.
                                      SEDIMENTS         PESTICIDES
                                      SLUDGES           DIOXINS/FURANS
                                      SOILS             HALOGENATED  VOLATILES
                                                       HALOGENATED  NONVOLATILES
                                                       NONHALOGENATED  NONVOLATILES
                                                       NONHALOGENATED  VOLATILES
                                                       PCBs
                                                                                                                            YES
                                                                                                                                      NO
                                SYBRON CHEMICALS,  INC.
                                     AQUEOUS MEDIA
                                     SOILS
                                     SLUDGES
                                     SEDIMENTS
                 HALOGENATED NONVOLATILES
                 HALOGENATED VOLATILES
                 INORGANIC CYANIDES
                 NONHALOGENATED NONVOLATILES
                 NONHALOGENATED VOLATILES
                 NONVOLATILE METALS
                 ORGANIC CYANIDES
                                                                                                                           YES
                                                                                                                                      YES
                                THORNE ENVIRONMENTAL,  INC.
                                     AQUEOUS MEDIA
                                     SEDIMENTS
                                     SLUDGES
                                     SOILS
                 HALOGENATED VOLATILES
                 HALOGENATED NONVOLATILES
                 NONHALOGENATED VOLATILES
                 NONHALOGENATED NONVOLATILES
                 PESTICIDES
                 PCBs
                 DIOXINS/FURANS
                                                                                                                           YES
                                                                                                                                      YES
                                WASTE  STREAM  TECHNOLOGY,  INC.
                                     OTHER SOLIDS     HALOGENATED NONVOLATILES
                                     SLUDGES          HALOGENATED VOLATILES
                                     SOILS            NONHALOGENATED NONVOLATILES
                                     SEDIMENTS        NONHALOGENATED VOLATILES
                                                                                                                           YES
                                                                                                                                      NO

-------
TREATMENT TECHNOLOGY
                                                       TABLE #  2  (CONTINUED)

                                      COMPANY  NAME                    MEDIA TREATED
                                                         CONTAMINANT GROUPS
                                                      BENCH
                                                      SCALE
PILOT
SCALE
BIODEGRADATION-SLURRY PHASE
(continued)
                                WESTERN RESEARCH  INSTITUTE
                                WOODWARD CLYDE  CONSULTANTS
                                      AQUEOUS  MEDIA
                                      SEDIMENTS
                                      SLUDGES
                                      SOILS

                                      SEDIMENTS
                                      SLUDGES
                                      SOILS
                                      OTHER SOLIDS
                 HALOGENATED VOLATILES
                 NONHALOGENATED NONVOLATILES
                 NONHALOGENATED VOLATILES
                                                                                       NOT  SPECIFIED
                                                                                                                           YES
                                                                                                                                     NO
                                                                                                                           YES       YES
BIODEGRADATION-SOLID PHASE
BIOSCIENCE  MANAGEMENT,  INC.
                                C-EE BIOREMEDIATION SYSTEMS
                                CYTO CULTURE ENVIRON.  BIOTECH.
OTHER SOLIDS     DIOXINS/FURANS
SOILS            HALOGENATED NONVOLATILES
                 HALOGENATED VOLATILES
                 INORGANIC CYANIDES
                 NONHALOGENATED NONVOLATILES
                 NONHALOGENATED VOLATILES
                 ORGANIC CORROSIVES
                 ORGANIC CYANIDES
                 PCBs

SEDIMENTS        HALOGENATED NONVOLATILES
SLUDGES          HALOGENATED VOLATILES
SOILS            NONHALOGENATED NONVOLATILES
                 NONHALOGENATED VOLATILES
                 PCBS
                 PESTICIDES

SEDIMENTS        NONHALOGENATED VOLATILES
SLUDGES          ORGANIC CYANIDES
SOILS            PCBs
                 PESTICIDES
                                                                                                                            YES        YES
                                                                                                                            YES       NO
                                                                                                                            YES       YES
                                DETOX, INC.
                                                                      AQUEOUS MEDIA
                                                                                       HALOGENATED VOLATILES
                                                                                                                            YES       YES

-------
TREATMENT TECHNOLOGY
                 TABLE  # 2 (CONTINUED)

COMPANY NAME                    MEDIA TREATED        CONTAMINANT  GROUPS
                                     BENCH     PILOT
                                     SCALE     SCALE
BIODEGRADATION-SOLID PHASE      DETOX, INC.
(continued)                     (continued)
                                ORGANIC LIQUID
                                SEDIMENTS
                                SLUDGES
                                SOILS
HALOGENATED NONVOLATILES
NONHALOGENATED VOLATILES
NONHALOGENATED NONVOLATILES
PESTICIDES
DIOXINS/FURANS
ORGANIC CYANIDES
ORGANIC CORROSIVES
VOLATILE METALS
NONVOLATILE METALS
                                ENSR - CELGENE
                                SEDIMENTS
                                SLUDGES
                                SOILS
                                                                                       NOT  SPECIFIED
                                                                                                                            YES
                                                                                                                                      YES
                                ENVIRONMENTAL REMEDIATION,  INC.
                               AQUEOUS MEDIA
                               ORGANIC LIQUID
                               SEDIMENTS
                               SLUDGES
                               SOILS
HALOGENATED VOLATILES
NONHALOGENATED VOLATILES
PCBs
PESTICIDES
                                                                                                                            YES
                                                                                                                                      NO
                                ENVIRONMENTAL TECHNOLOGY  SOUTHEAST
                                SEDIMENTS         HALOGENATED  NONVOLATILES
                                SLUDGES           HALOGENATED  VOLATILES
                                SOILS             NONHALOGENATED NONVOLATILES
                                                 NONHALOGENATED VOLATILES
                                                 NONVOLATILE  METALS
                                                                                                                            INP
                                                                                                                                      INP
                                ENV1ROTECH MID-ATLANTIC
                               SEDIMENTS         HALOGENATEO NONVOLATILES
                               SLUDGES           HALOGENATED VOLATILES
                               SOILS             NONHALOGENATED NONVOLATILES
                                                 NONHALOGENATED VOLATILES
                                                 NONVOLATILE METALS
                                                                                                                            YES
                                                                                                                                      YES
                                KEYSTONE ENVIRONMENTAL RESOURCES
                                                                      SOILS
                                                NONHALOGENATED NONVOLATILES
                                                HALOGENATED NONVOLATILES
                                                                                                                            YES
                                                                                                                                      NO

-------
TREATMENT TECHNOLOGY
                       TABLE # 2 (CONTINUED)

      COMPANY NAME                    MEDIA TREATED
                                                                                          CONTAMINANT  GROUPS
                                     BENCH
                                     SCALE
PILOT
SCALE
BIODEGRADATION-SOLID PHASE
(continued)
MCNAMEE ADVANCED TECHNOLOGY,  INC.
                                OHM CORPORATION
                                      SOILS
                                      SOILS
                                      SLUDGES
                                      ORGANIC LIQUID
HALOGENATED NONVOLATILES
HALOGENATED VOLATILES
NONHALOGENATED NONVOLATILES
NONHALOGENATED VOLATILES

HALOGENATED NONVOLATILES
HALOGENATED VOLATILES
NONHALOGENATED NONVOLATILES
NONHALOGENATED VOLATILES
NONVOLATILE METALS
PESTICIDES
PCBs
                                                                                            YES
                                                                                                      YES
                                                                                                                            YES       YES
                                REMEDIATION TECHNOLOGIES
                                      OTHER SOLIDS     HALOGENATED NONVOLATILES
                                      SEDIMENTS        HALOGENATED VOLATILES
                                      SOILS            NONHALOGENATED NONVOLATILES
                                      SLUDGES          NONHALOGENATED VOLATILES
                                                       ORGANIC CORROSIVES
                                                       ORGANIC CYANIDES
                                                       PCBs
                                                                                                                            YES       NO
                                RMT,  INC.
                                ROY F.  WESTON,  INC.
                                      SEDIMENTS
                                      SLUDGES
                                      SOILS

                                      SEDIMENTS
                                      SLUDGES
                                      SOILS
                                                                                       NOT SPECIFIED
PESTICIDES
DIOXINS/FURANS
HALOGENATED VOLATILES
HALOGENATED NONVOLATILES
NONHALOGENATED NONVOLATILES
NONHALOGENATED VOLATILES
PCBs
                                                                                                                            YES       YES
                                                                                                                            YES       NO
                                SYBRON CHEMICALS,  INC.
                                      OTHER SOLIDS
                                      SEDIMENTS
HALOGENATED NONVOLATILES
HALOGENATED VOLATILES
                                                                                                                            YES       YES

-------
                                                       TABLE # 2 (CONTINUED)
TREATMENT TECHNOLOGY
BIODEGRADATION-SOLID PHASE
(continued)
COMPANY NAME
SYBRON CHEMICALS, INC.
(continued)
MEDIA TREATED
SLUDGES
SOILS
CONTAMINANT GROUPS
INORGANIC CYANIDES
NONHALOGENATED NONVOLATILES
BENCH PILOT
SCALE SCALE

                                                                                       NONHALOGENATED VOLATILES
                                                                                       NONVOLATILE METALS
                                                                                       ORGANIC CYANIDES
                                THORNE ENVIRONMENTAL, INC.
                                WASTE STREAM TECHNOLOGY, INC.
AQUEOUS MEDIA
SEDIMENTS
SLUDGES
SOILS
OTHER SOLIDS
SLUDGES
SOILS
SEDIMENTS
HALOGENATED VOLATILES
HALOGENATED NONVOLATILES
NONHALOGENATED NONVOLATILES
NONHALOGENATED VOLATILES
PESTICIDES
PCBs
DIOXINS/FURANS

HALOGENATED NONVOLATILES
HALOGENATED VOLATILES
NONHALOGENATED NONVOLATILES
NONHALOGENATED VOLATILES
                                                                                                                            YES
                                                                YES
                                                      YES
NO
                                WESTERN RESEARCH INSTITUTE
                                                                      AQUEOUS MEDIA
                                                                      SEDIMENTS
                                                                      SLUDGES
                                                                      SOILS
                                                                                       NONVOLATILE METALS
                                                                                                                            NO
                                                                                                                                      NO
IN SITU BIODEGRADATION
                                BIOSCIENCE MANAGEMENT,  INC.
SOILS            DIOXINS/FURANS
OTHER SOLIDS     HALOGENATED NONVOLATILES
                 HALOGENATED VOLATILES
                 INORGANIC CYANIDES
                 NONHALOGENATED NONVOLATILES
                 NONHALOGENATED VOLATILES
                 ORGANIC CORROSIVES
                 ORGANIC CYANIDES
                 PCBs
                                                      YES
                                                                YES

-------
TREATMENT TECHNOLOGY
                       TABLE # 2 (CONTINUED)

      COMPANY NAME                    MEDIA TREATED        CONTAMINANT  GROUPS
                                     BENCH
                                     SCALE
PILOT
SCALE
IN SITU BIODEGRADATION
(continued)
C-E ENVIRONMENTAL,  INC.
                                      SEDIMENTS         HALOGENATED  NONVOLATILES
                                      SLUDGES           HALOGENATED  VOLATILES
                                      SOILS            NONHALOGENATED  NONVOLATILES
                                                       NONHALOGENATED  VOLATILES
                                                                                            YES
                                                                                                      YES
                                C-EE BIOREMEDIATION  SYSTEMS
                                      SEDIMENTS         HALOGENATED NONVOLATILES
                                      SLUDGES           HALOGENATED VOLATILES
                                      SOILS            NONHALOGENATED  VOLATILES
                                                       NONHALOGENATED  NONVOLATILES
                                                       PCBs
                                                       PESTICIDES
                                                                                                                            YES
                                                                                                                                      NO
                                DETOX,  INC.
                                      AQUEOUS  MEDIA
                                      ORGANIC  LIQUID
                                      SEDIMENTS
                                      SLUDGES
                                      SOILS
HALOGENATED VOLATILES
HALOGENATED NONVOLATILES
NONHALOGENATED VOLATILES
NONHALOGENATED NONVOLATILES
PESTICIDES
DIOXINS/FURANS
ORGANIC CYANIDES
ORGANIC CORROSIVES
VOLATILE METALS
NONVOLATILE METALS
                                                                                                                            YES        YES
                                ENSOTECH,  INC.
                                      OTHER SOLIDS     HALOGENATED NONVOLATILES
                                      SEDIMENTS        HALOGENATED VOLATILES
                                      SLUDGES          INORGANIC CORROSIVES
                                      SOILS            INORGANIC CYANIDES
                                                       NONHALOGENATED NONVOLATILES
                                                       NONHALOGENATED VOLATILES
                                                       NONVOLATILE METALS
                                                       OXIDIZERS
                                                       REDUCERS
                                                                                                                            YES       YES
                                ENSR  -  CELGENE
                                                                      SEDIMENTS
                                                                      SLUDGES
                                                                                       NOT SPECIFIED
                                                                                                                            YES       YES

-------
TREATMENT TECHNOLOGY
                                                       TABLE # 2 (CONTINUED)

                                      COMPANY NAME                    MEDIA TREATED       CONTAMINANT GROUPS
                                                                                            BENCH
                                                                                            SCALE
                                                                PILOT
                                                                SCALE
IN SITU BIOOEGRADATION
(continued)
ENSR - CELGENE
(continued)
SOILS
                                ENVIRONMENTAL REMEDIATION,  INC.
                                      AQUEOUS  MEDIA
                                      ORGANIC  LIQUID
                                      SEDIMENTS
                                      SLUDGES
                                      SOILS
                 HALOGENATED VOLATILES
                 NONHALOGENATED VOLATILES
                 PCBs
                 PESTICIDES
                                                                                                                            YES
                                                                                                                                      NO
                                ENVIRONMENTAL TECHNOLOGY  SOUTHEAST
                                                                      SEDIMENTS        HALOGENATED  NONVOLATILES
                                                                      SLUDGES          HALOGENATED  VOLATILES
                                                                      SOILS            NONHALOGENATED  NONVOLATILES
                                                                                       NONHALOGENATED  VOLATILES
                                                                                       NONVOLATILE  METALS
                                                                                                                            INP
                                                                                                                                      INP
                                ENVIROTECH MID-ATLANTIC
                                      SEDIMENTS         HALOGENATED  NONVOLATILES
                                      SLUDGES           HALOGENATED  VOLATILES
                                      SOILS             NONHALOGENATED NONVOLATILES
                                                       NONHALOGENATED VOLATILES
                                                       NONVOLATILE  METALS
                                                                                                                            YES
                                                                                                                                      YES
                                GENERAL PHYSICS  CORPORATION
                                                                      SEDIMENTS        DIOXINS/FURANS
                                                                      SLUDGES          INORGANIC  CORROSIVES
                                                                      SOILS            INORGANIC  CYANIDES
                                                                                      NONVOLATILE METALS
                                                                                      PCBs
                                                                                      PESTICIDES
                                                                                                                            YES
                                                                                                                                      NO
                                GROUNDWATER  &  ENVIRONMENTAL SERVICE
                                                                     AQUEOUS MEDIA
                                                                     SEDIMENTS
                                                                     SLUDGES
                                                                     SOILS
                                                                                      NOT SPECIFIED
                                                                                                                            INP
                                                                                                                                      INP
                                HUNTER BIOSCIENCES,  INC.
                                      SLUDGES
                                      SOILS
                 HALOGENATED  VOLATILES
                 NONHALOGENATED  NONVOLATILES
                 NONHALOGNEATED  VOLATILES
                                                                                                                            YES
                                                                                                                                      INP

-------
TREATMENT TECHNOLOGY
                                                       TABLE #  2  (CONTINUED)

                                      COMPANY  NAME                    MEDIA TREATED
                    CONTAMINANT GROUPS
                                     BENCH
                                     SCALE
PILOT
SCALE
IN SITU BIODEGRADATION
(continued)
                                INTERNATIONAL  PROCESS  RESEARCH  CORP    SOILS
                                KEYSTONE ENVIRONMENTAL RESOURCES
                                O'BRIEN AND GERE ENGINEERS,  INC.
                                OHM CORPORATION
AQUEOUS MEDIA
SOILS
SEDIMENTS
SEDIMENTS
SLUDGES
SOILS
HALOGENATED NONVOLATILES
HALOGENATED VOLATILES
INORGANIC CORROSIVES
INORGANIC CYANIDES
NONHALOGENATED VOLATILES
NONVOLATILE METALS
ORGANIC CORROSIVES
ORGANIC CYANIDES
OXIDIZERS
REDUCERS

NONHALOGENATED NONVOLATILES
HALOGENATED NONVOLATILES
HALOGENATED VOLATILES
NONHALOGENATED VOLATILES
INORGANIC CYANIDES
NONVOLATILE METALS

NONHALOGENATED NONVOLATILES
HALOGENATED VOLATILES
INORGANIC CORROSIVES
HALOGENATED NONVOLATILES
                                                                      AQUEOUS MEDIA    DIOXINS/FURANS
                                                                      ORGANIC LIQUID
                                                                      SLUDGES
                                                                      AQUEOUS MEDIA
                                                                      ORGANIC LIQUID
                 HALOGENATED NONVOLATILES
                 HALOGENATED VOLATILES
                 NONHALOGENATED VOLATILES
                 NONVOLATILE METALS
                 NONHALOGENATED NONVOLATILES
                 PCBS
                 PESTICIDES
                 VOLATILE METALS
                                                                                                                           YES
                                                                                                                                     YES
                                                                                                                            YES       YES
                                                                                                                            YES       YES
                                                                                                                            YES       YES
                                OHM CORPORATION
                                                                      SOILS
                 DIOXINS/FURANS
                                                                                                                            YES       YES

-------
                       TABLE # 2 (CONTINUED)
TREATMENT TECHNOLOGY
IN SITU BIODEGRAOATION
(continued)
COMPANY NAME
OHM CORPORATION
(continued)
MEDIA TREATED
ORGANIC LIQUID
OTHER SOLIDS
CONTAMINANT GROUPS
HALOGENATED NONVOLATILES
HALOGENATED VOLATILES
BENCH PILOT
SCALE SCALE

                                                       NONHALOGENATED VOLATILES
                                                       PESTICIDES
                                                       NONHALOGENATED NONVOLATILES
POLYBAC CORPORATION
REMEDIATION TECHNOLOGIES
SOILS            NOT SPECIFIED

SOILS            HALOGENATED NONVOLATILES
SLUDGES          HALOGENATED VOLATILES
SEDIMENTS        INORGANIC CORROSIVES
                 INORGANIC CYANIDES
                 NONHALOGENATED VOLATILES
                 NONHALOGENATED NONVOLATILES
                 NONVOLATILE METALS
                 VOLATILE METALS
                 PCBs
                 PESTICIDES
                                     YES

                                     YES
NO

YES
RMT, INC.
SEDIMENTS
SLUDGES
SOILS
NOT SPECIFIED
                                     YES       NO
ROY F. WESTON, INC.
SEDIMENTS        PESTICIDES
SLUDGES          DIOXINS/FURANS
SOILS            HALOGENATED VOLATILES
                 HALOGENATED NONVOLATILES
                 NONHALOGENATED NONVOLATILES
                 NONHALOGENATED VOLATILES
                 PCBs
                                     YES       NO
SOUTHERN RESEARCH INSTITUTE
                                      AQUEOUS  MEDIA
                                      SEDIMENTS
                                      SLUDGES
                                      SOILS
                 HALOGENATED VOLATILES
                 NONHALOGENATED NONVOLATILES
                 PCBs
                 PESTICIDES
                                     YES       NO

-------
TREATMENT TECHNOLOGY
                                                       TABLE  # 2  (CONTINUED)

                                      COMPANY  NAME                     MEDIA TREATED
                    CONTAMINANT GROUPS
                                     BENCH
                                     SCALE
PILOT
SCALE
IN SITU BIODEGRADATION
(continued)
                                SYBRON CHEMICALS,  INC.
AQUEOUS MEDIA
SOILS
SEDIMENTS
SLUDGES
OTHER SOLIDS
HALOGENATED NONVOLATILES
HALOGENATED VOLATILES
INORGANIC CYANIDES
NONHALOGENATED NONVOLATILES
NONHALOGENATED VOLATILES
NONVOLATILE METALS
ORGANIC CYANIDES
                                                                                                                           YES
                                                                                                                                     YES
                                THORNE ENVIRONMENTAL,  INC.
                                WASTE STREAM  TECHNOLOGY,  INC.
AQUEOUS MEDIA
SEDIMENTS
SLUDGES
SOILS
AQUEOUS MEDIA
SOILS
HALOGENATED VOLATILES
HALOGENATED VOLATILES
NONHALOGENATED VOLATILES
NONHALOGENATED NONVOLATILES
PESTICIDES
PCBs
DIOXINS/FURANS

HALOGENATED NONVOLATILES
HALOGENATED VOLATILES
NONHALOGENATED NONVOLATILES
NONHALOGENATED VOLATILES
                                                                                                                           YES       YES
                                                                                                                            YES        YES
                                WESTERN RESEARCH INSTITUTE
AQUEOUS MEDIA
SEDIMENTS
SLUDGES
SOILS
HALOGENATED NONVOLATILES
HALOGENATED VOLATILES
NONHALOGENATED NONVOLATILES
NONHALOGENATED VOLATILES
                                                                                                                            YES       NO
                                WOODWARD CLYDE  CONSULTANTS
SEDIMENTS
SLUDGES
SOILS
OTHER SOLIDS
                                                                                       NOT SPECIFIED
                                                                                                                            YES       YES
                                YEC INC
                                                                      NOT SPECIFIED
                                                                                       NOT SPECIFIED
                                                                                                                            YES       YES

-------
TREATMENT TECHNOLOGY
                 TABLE # 2 (CONTINUED)

COMPANY NAME                     MEDIA TREATED       CONTAMINANT  GROUPS
                                                                                                                            BENCH
                                                                                                                            SCALE
                                               PILOT
                                               SCALE
ROTATING BIOLOGICAL CONTACTORS  DIVERSIFIED ENGINEERING, INC.
                                ZIMPRO PASSAVANT
                                AQUEOUS MEDIA
                                ORGANIC LIQUID
                                SLUDGES
                                SEDIMENTS

                                AQUEOUS MEDIA
                                ORGANIC LIQUID
                                                                                       HALOGENATED NONVOLATILES
                                                                                       NONVOLATILE METALS
                                                                                       NONHALOGENATED NONVOLATILES
                                                                                       HALOGENATED VOLATILES
                                                                                       HALOGENATED NONVOLATILES
                                                                                       NONHALOGENATED VOLATILES
                                                                                       NONHALOGENATED NONVOLATILES
                                                                                                                            YES
                                                                                                                                      IMP
                                                                                                                            YES       YES
SSP-PLASMA SLUDGE
                                PLASMA HOLDINGS,  N.V.
                               AQUEOUS MEDIA
                               ORGANIC LIQUID
                               SLUDGES
HALOGENATED NONVOLATILES
HALOGENATED VOLATILES
NONHALOGENATED NONVOLATILES
NONHALOGENATED VOLATILES
ASBESTOS
DIOXINS/FURANS
                                                                                                                            NO
                                                                                                                                      YES

-------
TREATMENT TECHNOLOGY
                                                       TABLE # 2 (CONTINUED)

                                      COMPANY NAME                    MEDIA TREATED
                                                          CONTAMINANT GROUPS
                                                      BENCH
                                                      SCALE
PILOT
SCALE
IMMOBILIZATION
CEMENT SOLIDIFICATION
DIVERSIFIED ENGINEERING, INC.
SLUDGES          HALOGENATED NONVOLATILES
OTHER SOLIDS     NONHALOGENATED NONVOLATILES
SEDIMENTS        RADIOACTIVE MATERIALS
                                                                                                                            YES
                                                                                                                                      INP
FIXATION
PEI ASSOCIATES,  INC.
                                                                      SOILS
                 NONVOLATILE METALS
                 VOLATILE METALS
                                                                                                                            INP
                                                                                                                                      INP
FIXATION/STABILIZATION
                                CHEMFIX ENVIRONMENTAL SERVICES
                                      SLUDGES
                                      AQUEOUS MEDIA
                                      SOILS
                                      OTHER SOLIDS
                 VOLATILE METALS
                 NONVOLATILE METALS
                 NONHALOGENATED VOLATILES
                 NONHALOGENATED NONVOLATILES
                                                                                                                            YES
                                                                                                                                      YES
LIME SOLIDIFICATION
DIVERSIFIED ENGINEERING, INC.
OTHER SOLIDS     HALOGENATED NONVOLATILES
SLUDGES          RADIOACTIVE MATERIALS
SEDIMENTS        NONHALOGENATED NONVOLATILES
                                                                                                                            YES
                                                                                                                                      INP
ORGANIC POLYMER SOLIDIFICATION  DIVERSIFIED ENGINEERING, INC.
                                      OTHER SOLIDS     HALOGENATED NONVOLATILES
                                      SEDIMENTS        RADIOACTIVE MATERIALS
                                      SLUDGES          NONHALOGENATED NONVOLATILES
                                                                                                                            YES
                                                                                                                                      INP
SOLIDIFICATION
                                APPLIED SURFACE TECHNOLOGY
                                      AQUEOUS MEDIA
                                      ORGANIC LIQUIDS
                                      SLUDGES
                                      SOILS
                  INORGANIC  CORROSIVES
                  OXIDIZERS
                  HALOGENATED NONVOLATILES
                  HALOGENATED VOLATILES
                  NONVOLATILE METALS
                  ORGANIC  CYANIDES
                  INORGANIC  CYANIDES
                                                                                                                            YES
                                                                                                                                      YES
                                C-E ENVIRONMENTAL, INC.
                                                                      SOILS
                                                                                       NOT SPECIFIED
                                                                                                                            YES       YES

-------
TREATMENT TECHNOLOGY
                       TABLE # 2 (CONTINUED)

      COMPANY NAME                    MEDIA TREATED        CONTAMINANT  GROUPS
                                                                                                                            BENCH     PILOT
                                                                                                                            SCALE     SCALE
SOLIDIFICATION
(continued)
C-E ENVIRONMENTAL,  INC.
(continued)
SLUDGES
SORBENTS SOLIDIFICATION
                                DIVERSIFIED ENGINEERING, INC.
                                      OTHER  SOLIDS      HALOGENATED  NONVOLATILES
                                      SEDIMENTS         RADIOACTIVE  MATERIALS
                                      SLUDGES           NONHALOGENATED  NONVOLATILES
                                                                                           YES        INP
STABILIZATION
                                ANDCO ENVIRONMENTAL PROCESSES,  INC.    SLUDGES
                                                      NONVOLATILE METALS
                                                      VOLATILE METALS
                                                                                           YES       NO
                                APPLIED SURFACE TECHNOLOGY
                                                                      AQUEOUS  MEDIA
                                                                      ORGANIC  LIQUIDS
                                                                      SLUDGES
                                                                      SOILS
                                                       INORGANIC CORROSIVES
                                                       OXIDIZERS
                                                       HALOGENATED NONVOLATILES
                                                       HALOGENATED VOLATILES
                                                       NONVOLATILE METALS
                                                       ORGANIC CYANIDES
                                                       INORGANIC CYANIDES
                                                                                                                            YES        YES
                                E M & C ENGINEERING ASSOCIATES
                                                                      AQUEOUS MEDIA
                                                                      ORGANIC LIQUID
                                                      DIOXINS/FURANS
                                                      HALOGENATED NONVOLATILES
                                                      HALOGENATED VOLATILES
                                                      INORGANIC CORROSIVES
                                                      INORGANIC CYANIDES
                                                      NONVOLATILE METALS
                                                      ORGANIC CYANIDES
                                                      OXIDIZERS
                                                      PCBs
                                                      PESTICIDES
                                                      REDUCERS
                                                      VOLATILE METALS
                                                                                                                            INP
                                                                                                                                      INP
                                ENVIROSAFE  TECHNOLOGIES,  INC.
                                     SEDIMENTS
                                     SLUDGES
                                     SOILS
                 NONVOLATILE  METALS
                 PCBs
                                                                                           YES       YES

-------
TREATMENT TECHNOLOGY
                                                       TABLE  # 2  (CONTINUED)

                                      COMPANY  NAME                     MEDIA TREATED
                    CONTAMINANT GROUPS
                                     BENCH     PILOT
                                     SCALE     SCALE
STABILIZATION
(continued)
                                HAZANSWERS,  INC.

                                MCNAMEE ADVANCED  TECHNOLOGY,  INC.
NOT SPECIFIED

AQUEOUS MEDIA
SLUDGES
NOT SPECIFIED

INORGANIC CORROSIVES
NONVOLATILE METALS
REDUCERS
OXIDIZERS
INP       IMP

YES       YES
STABILIZATION/SOLIDIFICATION    AAA CSI
                                AEA TECHNOLOGY
                                CHEMENCO,  INC.
SEDIMENTS
SLUDGES
SOILS
AQUEOUS MEDIA
ORGANIC LIQUID
SEDIMENTS
SLUDGES
SOILS
                                ANDCO ENVIRONMENTAL PROCESSES, INC.   SLUDGES
SEDIMENTS
SOILS
SLUDGES
OTHER SOLIDS
HALOGENATED NONVOLATILES
HALOGENATED VOLATILES
INORGANIC CORROSIVES
NONHALOGENATED NONVOLATILES
NONHALOGENATED VOLATILES
NONVOLATILE METALS
ORGANIC CORROSIVES
OXIDIZERS
PCBs
PESTICIDES
REDUCERS
VOLATILE METALS

RADIOACTIVE MATERIALS
                                                                                                                            NO        NO
                                                                                                                            YES       YES
                 NONVOLATILE METALS
                 VOLATILE METALS

                 NOT SPECIFIED
                                                                                                                            YES       NO
                                                                                                                            YES       NO

-------
TREATMENT TECHNOLOGY
                 TABLE  # 2  (CONTINUED)

COMPANY NAME                     MEDIA TREATED       CONTAMINANT GROUPS
                                                                                                                           BENCH
                                                                                                                           SCALE
                                                                                               PILOT
                                                                                               SCALE
STABILIZATION/SOLIDIFICATION
(continued)
                                EARTH TECHNOLOGY  CORP.
                                                                     OTHER SOLIDS     ORGANIC CORROSIVES
                                                                     SEDIMENTS        HALOGENATED VOLATILES
                                                                     SLUDGES          HALOGENATED NONVOLATILES
                                                                     SOILS            INORGANIC CORROSIVES
                                                                                      NONVOLATILE METALS
                                                                                      NONHALOGENATED VOLATILES
                                                                                      NONHALOGENATED NONVOLATILES
                                                                                      ASBESTOS
                                                                                                                           YES
                                                                                                                                     NO
                                ENRECO TECHNOLOGIES GROUP
                                ENSOTECH,  INC.
                                ENSOTECH,  INC.
                                                                     OTHER SOLIDS
                                                                     SLUDGES
                                                                     SOILS
                                                                     SEDIMENTS
                                                                     AQUEOUS MEDIA
                               SOILS
                               OTHER SOLIDS
                               SEDIMENTS
                               SLUDGES
HALOGENATED VOLATILES
NONHALOGENATED VOLATILES
PESTICIDES
VOLATILE METALS
NONVOLATILE METALS
ORGANIC CORROSIVES
INORGANIC CORROSIVES

HALOGENATED NONVOLATILES
HALOGENATED VOLATILES
INORGANIC CORROSIVES
INORGANIC CYANIDES
NONHALOGENATED NONVOLATILES
NONHALOGENATED VOLATILES
NONVOLATILE METALS
OXIDIZERS
REDUCERS

NONVOLATILE METALS
NONHALOGENATED NONVOLATILES
HALOGENATED NONVOLATILES
HALOGENATED VOLATILES
NONHALOGENATED VOLATILES
INORGANIC CORROSIVES
INORGANIC CYANIDES
                                                                                                                           YES       YES
                                                                                     YES       YES
                                                                                     YES       NO

-------
TREATMENT TECHNOLOGY
                 TABLE # 2 (CONTINUED)

COMPANY NAME                    MEDIA TREATED
                                                                                          CONTAMINANT GROUPS
                                                                                                                            BENCH      PILOT
                                                                                                                            SCALE      SCALE
STABILIZATION/SOLIDIFICATION    ENSOTECH,  INC.
(continued)                     (continued)
                                ENURIGHT ENVIRONMENTAL,  INC.
                                GENERAL  PHYSICS  CORPORATION
                                HARMON  ENVIRONMENTAL SERVICES,  INC.


                                HAZCON  ENGINEERING, INC.

                                HUNTER  SERVICES,  INC.
                                I IT RESEARCH INST
                                                 OXIDIZERS
                                                 REDUCERS

                                                 RADIOACTIVE MATERIALS
                                                 NONVOLATILE METALS
                                                 ORGANIC CORROSIVES
                                                 ORGANIC CYANIDES
                                                 RADIOACTIVE MATERIALS
                                                 VOLATILE METALS

                                                 PCBs
                                                 NOT SPECIFIED

                                                 DIOXINS/FURANS
                                                 HALOGENATED NONVOLATILES
                                                 HALOGENATED VOLATILES
                                                 NONHALOGENATED NONVOLATILES
                                                 NONHALOGENATED VOLATILES
                                                 NONVOLATILE METALS
                                                 OXIDIZERS
                                                 PCBs
                                                 PESTICIDES
                                                 VOLATILE METALS
                                                                     SLUDGES          ORGANIC CORROSIVES
                                                                     OTHER SOLIDS     ORGANIC CYANIDES
                                                                     SOILS            HALOGENATED  NONVOLATILES
                                                                                      VOLATILE METALS
                                                                                      NONVOLATILE  METALS
                                                                                      NONHALOGENATED NONVOLATILES
SEDIMENTS
SLUDGES
SOILS

OTHER SOLIDS
SLUDGES
SOILS
SOILS
SLUDGES

NOT SPECIFIED

SEDIMENTS
SLUDGES
SOILS
                                                      YES       NO
YES       YES
YES       YES


YES       NO

YES       YES
                                                                                                                            YES       YES

-------
TREATMENT TECHNOLOGY
                       TABLE # 2 (CONTINUED)

      COMPANY NAME                    MEDIA TREATED       CONTAMINANT GROUPS
                                                                                                                            BENCH
                                                                                                                            SCALE
                                                                PILOT
                                                                SCALE
STABILIZATION/SOLIDIFICATION
(continued)
I IT RESEARCH INST
(continued)
                 PCBs
                 PESTICIDES
                 RADIOACTIVE MATERIALS
                                INTERNATIONAL PROCESS  RESEARCH  CORP    SOILS
                                                       HALOGENATED  NONVOLATILES
                                                       HALOGENATED  VOLATILES
                                                       INORGANIC  CORROSIVES
                                                       INORGANIC  CYANIDES
                                                       NONHALOGENATED  VOLATILES
                                                       NONVOLATILE  METALS
                                                       ORGANIC  CORROSIVES
                                                       ORGANIC  CYANIDES
                                                       OXIDIZERS
                                                       REDUCERS
                                                      YES
                                                                                                                                      YES
                                IT  CORPORATION
                                JACOBS  ENGINEERING GROUP,  INC.
                                KIBER ASSOCIATES,  INC.
SOILS            HALOGENATED NONVOLATILES
                 HALOGENATED VOLATILES
                 INORGANIC CYANIDES
                 NONHALOGENATED NONVOLATILES
                 NONHALOGENATED VOLATILES
                 NONVOLATILE METALS
                 PCBs
                 PESTICIDES

SLUDGES          INORGANIC CORROSIVES
SOILS            ORGANIC CORROSIVES
SEDIMENTS        NONVOLATILE METALS
                 VOLATILE METALS

OTHER SOLIDS     HALOGENATED NONVOLATILES
SOILS            HALOGENATED VOLATILES
                 INORGANIC CORROSIVES
                 NONHALOGENATED NONVOLATILES
                 NONHALOGENATED VOLATILES
                 NONVOLATILE METALS
                                                                                                                            YES
                                                                                                                                     NO
                                                                                           YES
                                                                                                     NO
                                                                                           YES
                                                                                                     NO

-------
TREATMENT TECHNOLOGY
                                                       TABLE  #  2  (CONTINUED)

                                      COMPANY  NAME                    MEDIA TREATED
                    CONTAMINANT GROUPS
                                     BENCH     PILOT
                                     SCALE     SCALE
STABILIZATION/SOLIDIFICATION    KIBER  ASSOCIATES,  INC.
(continued)                     (continued)
                                KIBER ASSOCIATES,  INC.
                                KIBER ASSOCIATES,  INC.
                                MAECORP,  INC.
                                MARINE POLUTION CONTROL
                                MCNAMEE ADVANCED TECHNOLOGY, INC.
OTHER SOLIDS
SOILS
OTHER SOLIDS
SOILS
SEDIMENTS
SLUDGES
SOILS
OTHER SOLIDS

AQUEOUS MEDIA
SOILS
SLUDGES
SOILS
PESTICIDES
VOLATILE METALS

HALOGENATED NONVOLATILES
HALOGENATED VOLATILES
INORGANIC CORROSIVES
NONHALOGENATED NONVOLATILES
NONHALOGENATED VOLATILES
NONVOLATILE METALS
PESTICIDES
VOLATILE METALS

HALOGENATED NONVOLATILES
HALOGENATED VOLATILES
INORGANIC CORROSIVES
NONHALOGENATED NONVOLATILES
NONHALOGENATED VOLATILES
NONVOLATILE METALS
PESTICIDES
VOLATILE METALS

VOLATILE METALS
NONVOLATILE METALS
ASBESTOS
NONHALOGENATED  VOLATILES
PCBS

INORGANIC  CORROSIVES
NONVOLATILE  METALS
ORGANIC CORROSIVES
OXIDIZERS
REDUCERS
                                                                                                                           YES       NO
                                                                                                                            YES       NO
                                                                                                                            YES       YES
                                                                                                                            INP       INP
                                                                                                                            YES       YES

-------
TREATMENT TECHNOLOGY
                 TABLE # 2 (CONTINUED)

COMPANY NAME                    MEDIA TREATED       CONTAMINANT  GROUPS
                                                                                                                            BENCH
                                                                                                                            SCALE
                                                                                                PILOT
                                                                                                SCALE
STABILIZATION/SOLIDIFICATION
(continued)
                                O'BRIEN AND GERE  ENGINEERS,  INC.
                                SEDIMENTS        NONVOLATILE METALS
                                SLUDGES          PCBs
                                SOILS            VOLATILE  METALS
                                                 NONHALOGENATED WON VOL AT RES
                                                                                     YES
                                                                                                YES
                                OHM CORPORATION
                                                                      SOILS
                                                                      ORGANIC  LIQUID
                                                                      OTHER  SOLIDS
                                                                      SLUDGES
                                                DIOXINS/FURANS
                                                HALOGENATED NONVOLATILES
                                                HALOGENATEO VOLATILES
                                                NONHALOGENATED VOLATILES
                                                NONVOLATILE METALS
                                                NONHALOGENATED NONVOLATILES
                                                PCBs
                                                PESTICIDES
                                                VOLATILE METALS
                                                                                                                           YES       YES
                                PEI  ASSOCIATES,  INC.
                                SOILS
                                                HALOGENATED VOLATILES
                                                NONHALOGENATED VOLATILES
                                                PESTICIDES
                                                DIOXINS/FURANS
                                                VOLATILE METALS
                                                NONVOLATILE METALS
                                                                                     INP       INP
                                PEI  ASSOCIATES,  INC.
                               SOILS
                                                NONVOLATILE METALS
                                                VOLATILE METALS
                                                HALOGENATED VOLATILES
                                                PCBs
                                     INP       INP
                                PYROGENICS,  INC.
                               SLUDGES
                                                NONHALOTENATED NONVOLATILES
                                                NONVOLATILE METALS
                                                VOLATILE METALS
                                                                                     YES       YES
                                QUALTEC,  INC.
                               AQUEOUS MEDIA
                               SEDIMENTS
                               SLUDGES
HALOGENATED VOLATILES
NONHALOGENATED NONVOLATILES
NONHALOGENATED VOLATILES
INP       INP

-------
TREATMENT TECHNOLOGY
                                      COMPANY  NAME
TABLE # 2 (CONTINUED)

               MEDIA TREATED
                                                                                          CONTAMINANT GROUPS
                                     BENCH
                                     SCALE
PILOT
SCALE
STABILIZATION/SOLIDIFICATION    QUALTEC,  INC.
(continued)                     (continued)
               SOILS
NONVOLATILE METALS
PCBs
                                RADIAN CORPORATION
                                                                      AQUEOUS  MEDIA
                                                                      ORGANIC  LIQUID
                                HALOGENATED NONVOLATILES
                                HALOGENATED VOLATILES
                                NONHALOGENATED NONVOLATILES
                                NONHALOGENATED VOLATILES
                                NONVOLATILE METALS
                                ORGANIC CORROSIVES
                                ORGANIC CYANIDES
                                OXIDIZERS
                                PCBs
                                PESTICIDES
                                REDUCERS
                                VOLATILE METALS
                                                                                                                           YES
                                                                                                                                     YES
                                REMEDIATION  TECHNOLOGIES
               SEDIMENTS        HALOGENATED NONVOLATILES
               SOILS            NONHALOGENATED VOLATILES
               SLUDGES          NONHALOGENATED VOLATILES
                                NONHALOGENATED NONVOLATILES
                                ORGANIC CORROSIVES
                                ORGANIC CYANIDES
                                PCBs
                                PESTICIDES
                                                                                                                            YES
                                                                                                                                     NO
                                RHC  ENV & ANALYTICAL LABORATORIES
                                                                      SOILS            DIOXINS/FURANS
                                                                      SEDIMENTS        HALOGENATED  NONVOLATILES
                                                                      SLUDGES          HALOGENATED  VOLATILES
                                                                                      NONHALOGENATED  NONVOLATILES
                                                                                      NONHALOGENATED  VOLATILES
                                                                                      ORGANIC  CYANIDES
                                                                                      PCBs
                                                                                      PESTICIDES
                                                                                      ORGANIC  CORROSIVES
                                                                                      NONVOLATILE  METALS
                                                                                                                            YES
                                                                               YES

-------
TREATMENT TECHNOLOGY
                                                       TABLE  # 2 (CONTINUED)

                                      COMPANY NAME                    MEDIA TREATED        CONTAMINANT  GROUPS
                                                      BENCH
                                                      SCALE
                                               PILOT
                                               SCALE
STABILIZATION/SOLIDIFICATION
(continued)
                                RMT, INC.
                                RNK ENVIRONMENTAL,  INC.
                                RODNEY KINNEY ASSOCIATES
SEDIMENTS
SLUDGES
SOILS
AQUEOUS MEDIA
SEDIMENTS
SLUDGES
SOILS
OTHER SOLIDS

SLUDGES
SOILS
HALOGENATED NONVOLATILES
HALOGENATED VOLATILES
INORGANIC CORROSIVES
INORGANIC CYANIDES
NONHALOGENATED NONVOLATILES
NONHALOGENATED VOLATILES
NONVOLATILE METALS
ORGANIC CORROSIVES
ORGANIC CYANIDES
OXIDIZERS
PCBs
PESTICIDES

NONVOLATILE METALS
                                                                                                                            YES
                                                                                                                                      YES
                                                                                      OXIDIZERS
                                                                                      PCBS
                                                                                      REDUCERS
                                                      YES       YES
                                                                                                                            INP        INP
                                ROY  F.  WESTON,  INC.
SEDIMENTS        PESTICIDES
SLUDGES          DIOXINS/FURANS
SOILS            NONVOLATILE METALS
                 PCBS
                 HALOGENATED NONVOLATILES
                 HALOGENATED VOLATILES
                 INORGANIC CORROSIVES
                 INORGANIC CYANIDES
                 NONHALOGENATED NONVOLATILES
                 NONHALOGENATED VOLATILES
                 ORGANIC CORROSIVES
                 ORGANIC CYANIDES
                                                                                                                           YES       YES

-------
            TREATMENT TECHNOLOGY
                 TABLE # 2 (CONTINUED)

COMPANY NAME                    MEDIA TREATED       CONTAMINANT GROUPS
                                                                                                                                       BENCH
                                                                                                                                       SCALE
                                               PILOT
                                               SCALE
            STABILIZATION/SOLIDIFICATION
            (continued)
                                           THORNE ENVIRONMENTAL, INC.
                                           VERSAR INC.
ui
-j
                                           WESTERN RESEARCH INSTITUTE
                                OTHER SOLIDS
                                SEDIMENTS
                                SLUDGES
                                SOILS

                                SEDIMENTS
                                SLUDGES
                                SOILS
                                                                                 SEDIMENTS
                                                                                 SLUDGES
                                                                                 SOILS
ORGANIC CYANIDES
VOLATILE METALS
NONVOLATILE METALS
INORGANIC CYANIDES

VOLATILE METALS
HALOGENATED NONVOLATILES
HALOGENATED VOLATILES
INORGANIC CORROSIVES
INORGANIC CYANIDES
NONHALOGENATED NONVOLATILES
NONHALOGENATED VOLATILES
NONVOLATILE METALS
ORGANIC CORROSIVES
ORGANIC CYANIDES

NONHALOGENATED NONVOLATILES
NONHALOGENATED VOLATILES
                                                                                      YES
                                                                                                YES
                                                                                                                                       YES       NO
                                                                                                                                       YES       YES
                                           WOODWARD CLYDE CONSULTANTS
                                                                                 SEDIMENTS
                                                                                 SOILS
                                                                                 SLUDGES
                                                                                 OTHER SOLIDS
                                                 NOT SPECIFIED
                                     YES       YES
                                           YEC INC

                                           ZENON ENVIRONMENTAL
                                NOT  SPECIFIED

                                SEDIMENTS
                                SLUDGES
                                SOILS
NOT SPECIFIED

HALOGENATED NONVOLATILES
HALOGENATED VOLATILES
INORGANIC CORROSIVES
INORGANIC CYANIDES
NONHALOGENATED NONVOLATILES
NONHALOGENATED VOLATILES
NONVOLATILE METALS
YES       YES

YES       YES

-------
TREATMENT TECHNOLOGY
                       TABLE  # 2 (CONTINUED)

      COMPANY NAME                    MEDIA TREATED
   CONTAMINANT GROUPS
BENCH
SCALE
PILOT
SCALE
STABILIZATION/SOLIDIFICATION
(continued)
ZENON ENVIRONMENTAL
(continued)
ORGANIC CORROSIVES
ORGANIC CYANIDES
PCBs
PESTICIDES
THERMOPLASTIC SOLIDIFICATION    DIVERSIFIED ENGINEERING,  INC.
                                      OTHER  SOLIDS      HALOGENATED  NONVOLATILES
                                      SEDIMENTS         RADIOACTIVE  MATERIALS
                                      SLUDGES           NONHALOGENATED  NONVOLATILES
                                                                                                                            YES
                                                                                                                                      INP

-------
TREATMENT TECHNOLOGY
                 TABLE  # 2 (CONTINUED)

COMPANY NAME                    MEDIA TREATED       CONTAMINANT  GROUPS
                                                                                                                           BENCH
                                                                                                                           SCALE
PILOT
SCALE
IS SITU TECHNOLOGIES

<> IN SITU BIODEGRADATION, SEE BIOLOGICAL

IN SITU RADIO FREQUENCY HTG     I IT RESEARCH INST
                                ROY f.  WESTON,  INC.
                                SLUDGES          DIOXINS/FURANS
                                OTHER  SOLIDS     PESTICIDES
                                SOILS             HALOGENATED  VOLATILES
                                                 RADIOACTIVE  MATERIALS
                                                 PCBs

                                SEDIMENTS        PESTICIDES
                                SLUDGES          DIOXINS/FURANS
                                SOILS             NONVOLATILE  METALS
                                                 VOLATILE  METALS
                                                 PCBs
                                                 HALOGENATED  NONVOLATILES
                                                 HALOGENATED  VOLATILES
                                                 NONHALOGENATED NONVOLATILES
                                                 NONHALOGENATED VOLATILES
                                                                                      YES
                                                                                                YES
                                                                                                                           NO
                                                                                                                                     YES
IN SITU SOIL FLUSHING
                                APPLIED  SURFACE  TECHNOLOGY
                                C-EE  BIOREMEDIATION  SYSTEMS
                                AQUEOUS  MEDIA    INORGANIC CORROSIVES
                                ORGANIC  LIQUIDS  OXIDIZERS
                                SLUDGES           HALOGENATED  NONVOLATILES
                                SOILS             HALOGENATED  VOLATILES
                                                 NONVOLATILE  METALS
                                                 ORGANIC CYANIDES
                                                 INORGANIC CYANIDES

                                SEDIMENTS        HALOGENATED  NONVOLATILES
                                SLUDGES           HALOGENATED  VOLATILES
                                SOILS             NONHALOGENATED  VOLATILES
                                                 NONHALOGENATED  NONVOLATILES
                                                 PCBs
                                                 PESTICIDES
                                                                                      YES
                                                                                                                                      YES
                                                                                                                            YES
                                                                                                                                      NO

-------
TREATMENT TECHNOLOGY
                       TABLE # 2 (CONTINUED)

      COMPANY NAME                    MEDIA TREATED       CONTAMINANT GROUPS
                                     BENCH     PILOT
                                     SCALE     SCALE
IN SITU SOIL FLUSHING
(continued)
CYTO CULTURE ENVIRON.  BIOTECH.
                                      SEDIMENTS         NONHALOGENATED  VOLATILES
                                      SLUDGES          ORGANIC CYANIDES
                                      SOILS             PCBs
                                                       PESTICIDES
                                                                                            YES        YES
                                DETOX,  INC.
                                      AQUEOUS  MEDIA
                                      ORGANIC  LIQUID
                                      SEDIMENTS
                                      SLUDGES
                                      SOILS
HALOGENATED VOLATILES
HALOGENATED NONVOLATILES
NONHALOGENATED VOLATILES
NONHALOGENATED NONVOLATILES
PESTICIDES
DIOXINS/FURANS
ORGANIC CYANIDES
ORGANIC CORROSIVES
VOLATILE METALS
NONVOLATILE METALS
                                                                                                                            YES       YES
                                E M & C ENGINEERING ASSOCIATES
                                                                     SLUDGES
                                                                     OTHER SOLIDS
                                                                     SOILS
                                                      DIOXINS/FURANS
                                                      HALOGENATED NONVOLATILES
                                                      HALOGENATED VOLATILES
                                                      INORGANIC CORROSIVES
                                                      INORGANIC CYANIDES
                                                      NONVOLATILE METALS
                                                      ORGANIC CYANIDES
                                                      OXIDIZERS
                                                      PCBs
                                                      PESTICIDES
                                                      REDUCERS
                                                      VOLATILE METALS
                                                                                            INP
                                                                                                      INP
                                EARTH  TECHNOLOGY CORP.
                                                                     SEDIMENTS
                                                                     SLUDGES
                                                                     SOILS
                                                      NONHALOGENATED NONVOLATILES
                                                                                                                           YES
                                                                                                                                     NO
                                ENSOTECH,  INC.
                                     OTHER SOLIDS
                                     SEDIMENTS
HALOGENATED NONVOLATILES
HALOGENATED VOLATILES
                                                                                                                           YES       YES

-------
TREATMENT TECHNOLOGY
                                                       TABLE  # 2  (CONTINUED)

                                      COMPANY  NAME                     MEDIA TREATED
                                                          CONTAMINANT  GROUPS
                                                      BENCH      PILOT
                                                      SCALE      SCALE
IN SITU SOIL FLUSHING
(continued)
ENSOTECH,  INC.
(continued)
SLUDGES
SOILS
INORGANIC CORROSIVES
INORGANIC CYANIDES
NONHALOGENATED NONVOLATILES
NONHALOGENATED VOLATILES
NONVOLATILE METALS
OXIDIZERS
REDUCERS
                                ENVIRONMENTAL  TECHNOLOGY SOUTHEAST
                                      SEDIMENTS        HALOGENATED NONVOLATILES
                                      SLUDGES          HALOGENATED VOLATILES
                                      SOILS            NONHALOGENATED NONVOLATILES
                                                       NONHALOGENATED VOLATILES
                                                                                                                            INP
                                                                                                                                      INP
                                ENVIROTECH MID-ATLANTIC
                                      SEDIMENTS        HALOGENATED NONVOLATILES
                                      SLUDGES          HALOGENATED VOLATILES
                                      SOILS            NONHALOGENATED NONVOLATILES
                                                       NONHALOGENATED VOLATILES
                                                       NONVOLATILE METALS
                                                                                                                            YES
                                                                                                                                      YES
                                GROUNDWATER & ENVIRONMENTAL SERVICE   AQUEOUS MEDIA
                                                                      SEDIMENTS
                                                                      SLUDGES
                                                                      SOILS
                                                                                       NOT SPECIFIED
                                                                                                                            INP
                                                                                                                                      INP
                                HUNTER BIOSCIENCES, INC.
                                      SLUDGES
                                      SOILS
                 HALOGENATED VOLATILES
                 NONHALOGENATED NONVOLATILES
                 NONHALOGENATED VOLATILES
                                                                                                                            YES
                                                                                                                                      INP
                                O'BRIEN AND GERE ENGINEERS, INC.
                                      SOILS
                                      SLUDGES
                 HALOGENATED NONVOLATILES
                 HALOGENATED VOLATILES
                 NONHALOGENATED NONVOLATILES
                 NONHALOGENATED VOLATILES
                                                                                                                            YES
                                                                                                                                      YES
                                OHM CORPORATION
                                      SOILS
                                      SLUDGES
                 VOLATILE METALS
                 HALOGENATED  NONVOLATILES
                                                                                                                            YES
                                                                                                                                      YES

-------
TREATMENT TECHNOLOGY
                       TABLE # 2 (CONTINUED)

      COMPANY NAME                     MEDIA TREATED        CONTAMINANT  GROUPS
                                                                                                                            BENCH
                                                                                                                            SCALE
                                                                PILOT
                                                                SCALE
IN SITU SOIL FLUSHING
(continued)
OHM CORPORATION
(continued)
OTHER SOLIDS     HALOGENATED VOLATILES
                 NONHALOGENATED VOLATILES
                 NONVOLATILE METALS
                 NONHALOGENATED NONVOLATILES
                 PCBs
                 PESTICIDES
                                REMEDIATION TECHNOLOGIES
                                RMT,  INC.
                                ROY F.  WESTON,  INC.
                                      SEDIMENTS        HALOGENATED NONVOLATILES
                                      SLUDGES          HALOGENATED VOLATILES
                                      SOILS            INORGANIC CORROSIVES
                                                      INORGANIC CYANIDES
                                                      NONHALOGENATED VOLATILES
                                                      HALOGENATED VOLATILES
                                                      PCBs
                                                      PESTICIDES

                                      SEDIMENTS        PCBs
                                      SLUDGES          HALOGENATED VOLATILES
                                      SOILS            ORGANIC CYANIDES
                                                      NONHALOGENTED NONVOLATILES
                                                      VOLATILE METALS
                                                      ORGANIC CORROSIVES
                                                      HALOGENATED NONVOLATILES
                                                      NONHALOGENATED VOLATILES
                                                      NONVOLATILE METALS
                                                      PESTICIDES

                                      SEDIMENTS        PESTICIDES
                                      SLUDGES          DIOXINS/FURANS
                                      SOILS            NONVOLATILE METALS
                                                      INORGANIC CYANIDES
                                                      INORGANIC CORROSIVES
                                                      ORGANIC CYANIDES
                                                      ORGANIC CORROSIVES
                                                      HALOGENATED NONVOLATILES
                                                                                                                           YES
                                                                                                                                     YES
                                                      YES
                                                                                                                                     NO
                                                                                                                           YES
                                                                                                                                     NO

-------
TREATMENT TECHNOLOGY
                                                       TABLE  # 2  (CONTINUED)

                                      COMPANY NAME                    MEDIA TREATED
                                                          CONTAMINANT  GROUPS
                                                      BENCH
                                                      SCALE
PILOT
SCALE
IN SITU SOIL FLUSHING
(continued)
ROY F.  WESTON,  INC.
(continued)
                                SYBRON CHEMICALS,  INC.
                                THORNE ENVIRONMENTAL, INC.
                                WESTERN RESEARCH INSTITUTE
                 HALOGENATED VOLATILES
                 NONHALOGENATED NONVOLATILES
                 NONHALOGENATED VOLATILES
                 PCBs

OTHER SOLIDS     HALOGENATED NONVOLATILES
SEDIMENTS        HALOGENATED VOLATILES
SLUDGES          INORGANIC CYANIDES
SOILS            NONHALOGENATED NONVOLATILES
                 NONHALOGENATED VOLATILES
                 NONVOLATILE METALS
                 ORGANIC CYANIDES
                                      AQUEOUS MEDIA
                                      SEDIMENTS
                                      SLUDGES
                                      SOILS
                                      AQUEOUS MEDIA
                                      SEDIMENTS
                                      SLUDGES
                                      SOILS
                 HALOGENATED VOLATILES
                 HALOGENATED NONVOLATILES
                 NONHALOGENATED NONVOLATILES
                 NONHALOGENATED VOLATILES
                 PESTICIDES
                 PCBs
                 DIOXINS/FURANS

                 HALOGENATED NONVOLATILES
                 HALOGENATED VOLATILES
                 NONHALOGENATED VOLATILES
                                                                                                                            YES
                                                                                                                                      YES
                                                                                                                            YES
                                                                                                                                      YES
                                                                                                                            YES
                                                                                                                                      INP
IN SITU VACUUM & STEAM EXTRACT  AAA CSI
                                      SEDIMENTS        HALOGENATED NONVOLATILES
                                      SLUDGES          HALOGENATED VOLATILES
                                      SOILS            INORGANIC CORROSIVES
                                                       NONHALOGENATED NONVOLATILES
                                                       NONHALOGENATED VOLATILES
                                                       NONVOLATILE METALS
                                                       ORGANIC CORROSIVES
                                                       OXIDIZERS
                                                                                                                            NO
                                                                                                                                      NO

-------
TREATMENT TECHNOLOGY
                                                       TABLE # 2 (CONTINUED)

                                      COMPANY NAME                    MEDIA TREATED       CONTAMINANT GROUPS
                                                      BENCH     PILOT
                                                      SCALE     SCALE
IN SITU VACUUM & STEAM EXTRACT  AAA CSI
(continued)                     (continued)
                 PCBs
                 PESTICIDES
                 REDUCERS
                 VOLATILE METALS
                                C-E ENVIRONMENTAL,  INC.
SLUDGES
SOILS
                                                                                       NOT SPECIFIED
                                                                                                                            YES       YES
                                C-EE BIOREMEDIATION SYSTEMS
SEDIMENTS        HALOGENATED NONVOLATILES
SLUDGES          HALOGENATED VOLATILES
SOILS            NONHALOGENATED NONVOLATILES
                 NONHALOGENATED VOLATILES
                 PCBs
                 PESTICIDES
                                                                                                                            YES       NO
                                CHEMENCO,  INC.
SEDIMENTS
SOILS
SLUDGES
OTHER SOLIDS
NOT SPECIFIED
                                                                                                                            YES        NO
                                DETOX,  INC.
AQUEOUS MEDIA
ORGANIC LIQUID
SEDIMENTS
SLUDGES
SOILS
HALOGENATED VOLATILES
HALOGENATED NONVOLATILES
NONHALOGENATED VOLATILES
NONHALOGENATED NONVOLATILES
PESTICIDES
DIOXINS/FURANS
ORGANIC CYANIDES
ORGANIC CORROSIVES
VOLATILE METALS
NONVOLATILE METALS
                                                      YES       YES
                                EARTH  TECHNOLOGY CORP.
                                                                     SEDIMENTS
                                                                     SLUDGES
                                                                     SOILS
                                                                                       NONHALOGENATED VOLATILES
                                                                                                                            YES
                                                                                                                                      NO

-------
TREATMENT TECHNOLOGY
                                                      TABLE # 2 (CONTINUED)

                                      COMPANY NAME                    MEDIA TREATED
                                                         CONTAMINANT GROUPS
                                     BENCH      PILOT
                                     SCALE      SCALE
IN SITU VACUUM & STEAM EXTRACT
(continued)
ENSOTECH.  INC.
                                      OTHER  SOLIDS     HALOGENATED NONVOLATILES
                                      SEDIMENTS        HALOGENATED VOLATILES
                                      SLUDGES          INORGANIC CORROSIVES
                                      SOILS            INORGANIC CYANIDES
                                                      NONHALOGENATED  NONVOLATILES
                                                      NONHALOGENATED  VOLATILES
                                                      NONVOLATILE METALS
                                                      OXIDIZERS
                                                      REDUCERS
                                                                                           YES       YES
                                ENVIRONMENTAL TECHNOLOGY SOUTHEAST
                                      SEDIMENTS         HALOGENATED  NONVOLATILES
                                      SLUDGES          HALOGENATED  VOLATILES
                                      SOILS            NONHALOGENATED  NONVOLATILES
                                                       NONHALOGENATED  VOLATILES
                                                       NONVOLATILE  METALS
                                                                                                                           INP
                                                                                                                                     INP
                                ENVIROTECH MID-ATLANTIC
                                      SEDIMENTS         HALOGENATED  NONVOLATILES
                                      SLUDGES          HALOGENATED  VOLATILES
                                      SOILS            NONHALOGENATED  NONVOLATILES
                                                       NONHALOGENATED  VOLATILES
                                                       NONVOLATILE  METALS
                                                                                                                           YES
                                                                                                                                     YES
                                HUNTER  BIOSCIENCES,  INC.
                                      SLUDGES
                                      SOILS
HALOGENATED VOLATILES
NONHALOGENATED NONVOLATILES
NONHALOGENATED VOLATILES
                                                                                                                           YES
                                                                                                                                      INP
                                MAECORP,  INC.
                                      SEDIMENTS
                                      SLUDGES
                                      SOILS
NONHALOGENATED VOLATILES
HALOGENATED VOLATILES
                                                                                                                           YES
                                                                                                                                      YES
                                O'BRIEN AND GERE ENGINEERS,  INC.
                                      SOILS
                                      SLUDGES
HALOGENATED VOLATILES
NONHALOGENATED VOLATILES
                                                                                                                            YES
                                                                                                                                      YES
                                OHM  CORPORATION
                                      SOILS            NONHALOGENATED NONVOLATILES
                                      ORGANIC LIQUID   HALOGENATED NONVOLATILES
                                                                                                                            YES
                                                                                                                                      YES

-------
TREATMENT TECHNOLOGY
                 TABLE # 2 (CONTINUED)

COMPANY NAME                    MEDIA TREATED       CONTAMINANT  GROUPS
                                                                                                                            BENCH     PILOT
                                                                                                                            SCALE     SCALE
IN SITU VACUUM & STEAM EXTRACT  OHM CORPORATION
(continued)                     (continued)
                                PETROLEUM TESTING  SERVICE,  INC.
                                REMEDIATION  TECHNOLOGIES
                                OTHER SOLIDS     HALOGENATED VOLATILES
                                                 NONHALOGENATED VOLATILES

                                AQUEOUS  MEDIA     DIOXINS/FURANS
                                SEDIMENTS         HALOGENATED NONVOLATILES
                                SLUDGES           HALOGENATED VOLATILES
                                SOILS            NONHALOGENATED NONVOLATILES
                                                 NONHALOGENATED VOLATILES
                                                 NONVOLATILE METALS
                                                 PCBs
                                                 PESTICIDES

                                SEDIMENTS         HALOGENATED VOLATILES
                                SLUDGES           NONHALOGENATED VOLATILES
                                SOILS            HALOGENATED NONVOLATILES
                                                 NONHALOGENATED NONVOLATILES
                                                 PCBs
                                                 PESTICIDES
                                     YES       NO
                                                                                                                           YES
                                                                                                                                     YES
                                RMC  ENV & ANALYTICAL LABORATORIES
                                RMT,  INC.
                                                                     SEDIMENTS
                                                                     SLUDGES
                                                                     SOILS
                               SOILS
                               AQUEOUS MEDIA
DIOXINS/FURANS
HALOGENATED NONVOLATILES
HALOGENATED VOLATILES
NONHALOGENATED NONVOLATILES
NONHALOGENATED VOLATILES
NONVOLATILE METALS
ORGANIC CORROSIVES
ORGANIC CYANIDES
PCBs
PESTICIDES

VOLATILE METALS
NONHALOGENATED VOLATILES
HALOGENATED VOLATILES
                                                                                     INP
                                                                                               INP
YES       YES
                               ROY F. WESTON, INC.
                               SEDIMENTS
                                                PESTICIDES
                                                                                     YES       YES

-------
TREATMENT TECHNOLOGY
                                                       TABLE  # 2  (CONTINUED)

                                      COMPANY NAME                    MEDIA TREATED
                                                          CONTAMINANT  GROUPS
                                                      BENCH     PILOT
                                                      SCALE     SCALE
IN SITU VACUUM & STEAM EXTRACT  ROY F.  UESTON,  INC.
(continued)                     (continued)
                                      SLUDGES
                                      SOILS
                 DIOXINS/FURANS
                 HALOGENATED VOLATILES
                 HALOGENATED NONVOLATILES
                 NONHALOGENATED NONVOLATILES
                 NONHALOGENATED VOLATILES
                 PCBs
                                SYBRON CHEMICALS,  INC.
                                      OTHER SOLIDS     HALOGENATED NONVOLATILES
                                      SEDIMENTS        HALOGENATED VOLATILES
                                      SLUDGES          INORGANIC CYANIDES
                                      SOILS            NONHALOGENATED NONVOLATILES
                                                       NONHALOGENATED VOLATILES
                                                       NONVOLATILE METALS
                                                       ORGANIC CYANIDES
                                                                                                                            YES       YES
                                WOODWARD CLYDE CONSULTANTS
                                      SEDIMENTS
                                      SLUDGES
                                      SOILS
                                      OTHER SOLIDS
                                                                                       NOT SPECIFIED
                                                                                                                            YES       YES
IN SITU VACUUM EXTRACTION       ENVIROSAFE TECHNOLOGIES, INC.
                                                                      SOILS
                                                       HALOGENATED VOLATILES
                                                       NONHALOGENATED VOLATILES
                                                                                                                            YES
                                                                                                                                      YES
                                VAPEX
                                      SEDIMENTS
                                      SLUDGES
                                      SOILS
                 HALOGENATED VOLATILES
                 NONHALOGENATED VOLATILES
                                                                                                                            YES
                                                                                                                                      YES
                                VAPEX
                                      SOILS
                                      SLUDGES
                                      SEDIMENTS
                 HALOGENATED VOLATILES
                 NONHALOGENATED VOLATILES
                                                                                                                            YES
                                                                                                                                      YES
IN SITU VITRIFICATION
DETOX, INC.
AQUEOUS MEDIA
ORGANIC LIQUID
HALOGENATED VOLATILES
HALOGENATED NONVOLATILES
                                                                                                                            YES
                                                                                                                                      YES

-------
TREATMENT TECHNOLOGY
                       TABLE # 2 (CONTINUED)

      COMPANY NAME                    MEDIA TREATED       CONTAMINANT GROUPS
                                                                                                                            BENCH
                                                                                                                            SCALE
                                                                                                      PILOT
                                                                                                      SCALE
IN SITU VITRIFICATION
(continued)
DETOX, INC.
(continued)
                                RMC ENV &  ANALYTICAL  LABORATORIES
                                      SEDIMENTS        NONHALOGENATED VOLATILES
                                      SLUDGES          NONHALOGENATED NONVOLATILES
                                      SOILS            PESTICIDES
                                                       DIOXINS/FURANS
                                                       ORGANIC CYANIDES
                                                       ORGANIC CORROSIVES
                                                       VOLATILE METALS
                                                       NONVOLATILE  METALS

                                      SEDIMENTS        DIOXINS/FURANS
                                      SLUDGES          HALOGENATED  NONVOLATILES
                                      SOILS             HALOGENATED  VOLATILES
                                                       NONHALOGENATED NONVOLATILES
                                                       NONHALOGENATED VOLATILES
                                                       NONVOLATILE  METALS
                                                       ORGANIC CORROSIVES
                                                       ORGANIC CYANIDES
                                                       PCBs
                                                       PESTICIDES
                                                                                                                            YES
                                                                                                                                      YES

-------
TREATMENT TECHNOLOGY
                 TABLE # Z (CONTINUED)

COMPANY NAME                    MEDIA TREATED       CONTAMINANT  GROUPS
                                                                                                                           BENCH
                                                                                                                           SCALE
                                               PILOT
                                               SCALE
CHEMICAL/PHYSICAL

ACTIVATED CARBON
                                AAA CSI
                                                                      AQUEOUS  MEDIA
                                                                      ORGANIC  LIQUID
                                                 HALOGENATED  NONVOLATILES
                                                 HALOGENATED  VOLATILES
                                                 INORGANIC  CORROSIVES
                                                 NONHALOGENATED  NONVOLATILES
                                                 NONHALOGENATED  VOLATILES
                                                 NONVOLATILE  METALS
                                                 ORGANIC CORROSIVES
                                                 OXIDIZERS
                                                 PCBs
                                                 PESTICIDES
                                                 REDUCERS
                                                 VOLATILE METALS
                                ANDCO ENVIRONMENTAL  PROCESSES,  INC.    AQUEOUS  MEDIA     NOT  SPECIFIED
                                APPLIED SURFACE  TECHNOLOGY
                                                                      AQUEOUS  MEDIA
                                                                                       INORGANIC  CORROSIVES
                                                                      ORGANIC  LIQUIDS  OXIDIZERS
                                                                      SLUDGES
                                                                      SOILS
                                                 HALOGENATED NONVOLATILES
                                                 HALOGENATED VOLATILES
                                                 NONVOLATILE METALS
                                                 ORGANIC CYANIDES
                                                 INORGANIC CYANIDES
                                                                                                                           NO
                                                                                                                                     NO
                                                                                      YES

                                                                                      YES
                                               NO

                                               YES
                                C-E  ENVIRONMENTAL,  INC.
                                AQUEOUS MEDIA
                                ORGANIC LIQUID
HALOGENATED VOLATILES
NONHALOGENATED VOLATILES
HALOGENATED NONVOLATILES
DIOXINS/FURANS
PCBS
PESTICIDES
                                                                                                                            YES
                                                                                                                                      YES
                                C-EE  BIOREMEDIATION  SYSTEMS
                                                                      AQUEOUS  MEDIA
                                                                      ORGANIC  LIQUID
                                                 HALOGENATED NONVOLATILES
                                                 HALOGENATED VOLATILES
                                                 NONHALOGENATED NONVOLATILES
                                                 NONHALOGENATED VOLATILES
                                                                                                                            YES
                                                                                                                                      NO

-------
TREATMENT TECHNOLOGY
                                      COMPANY NAME
                       TABLE # 2 (CONTINUED)

                                      MEDIA TREATED
                                                                                          CONTAMINANT GROUPS
                                                                                                                            BENCH     PILOT
                                                                                                                            SCALE     SCALE
ACTIVATED CARBON
(continued)
C-EE BIOREMEDIATION SYSTEMS
(continued)
                                                                                       PCBs
                                                                                       PESTICIDES
                                CHEMENCO, INC.
                                      AQUEOUS MEDIA
                                      ORGANIC LIQUID
                                                       NOT  SPECIFIED
                                                                                            YES        NO
                                DETOX, INC.
                                      AQUEOUS  MEDIA
                                      ORGANIC  LIQUID
                                      SEDIMENTS
                                      SLUDGES
                                      SOILS
HALOGENATED VOLATILES
HALOGENATED NONVOLATILES
NONHALOGENATED VOLATILES
NONHALOGENATED NONVOLATILES
PESTICIDES
DIOXINS/FURANS
ORGANIC CYANIDES
ORGANIC CORROSIVES
VOLATILE METALS
NONVOLATILE METALS
                                                                                            YES       YES
                                E M & C ENGINEERING  ASSOCIATES
                                                                      AQUEOUS MEDIA
                                                                      ORGANIC LIQUID
                                                      DIOXINS/FURANS
                                                      HALOGENATED NONVOLATILES
                                                      HALOGENATED VOLATILES
                                                      INORGANIC CORROSIVES
                                                      INORGANIC CYANIDES
                                                      NONVOLATILE METALS
                                                      ORGANIC CYANIDES
                                                      OXIDIZERS
                                                      PCBs
                                                      PESTICIDES
                                                      REDUCERS
                                                      VOLATILE METALS
                                     INP       INP
                                EARTH  TECHNOLOGY  CORP.
                                                                     AQUEOUS MEDIA
                                                                     ORGANIC LIQUID
                                                      NONHALOGENATED VOLATILES
                                                      HALOGENATED NONVOLATILES
                                     YES       NO
                                ENVIRONMENTAL  RESOURCE ASSOCIATES
                                                                     AQUEOUS MEDIA
                                                                                      HALOGENATED NONVOLATILES
                                                                                      HALOGENATED VOLATILES
                                                                                           YES       YES

-------
TREATMENT TECHNOLOGY
                       TABLE # 2 (CONTINUED)

      COMPANY NAME                    MEDIA TREATED
                                                                                          CONTAMINANT GROUPS
                                     BENCH     PILOT
                                     SCALE     SCALE
ACTIVATED CARBON
(continued)
ENVIRONMENTAL RESOURCE ASSOCIATES
(continued)
INORGANIC CORROSIVES
NONHALOGENATED NONVOLATILES
NONHALOGENATED VOLATILES
NONVOLATILE METALS
                                ENVIRONMENTAL  TECHNOLOGY  SOUTHEAST
                                                                     AQUEOUS  MEDIA
                                                       HALOGENATED  NONVOLATILES
                                                       HALOGENATED  VOLATILES
                                                       NONHALOGENATED NONVOLATILES
                                                       NONHALOGENATED VOLATILES
                                                       NONVOLATILE  METALS
                                                                                                                            INP        INP
                                ENWRIGHT  ENVIRONMENTAL,  INC.
                                      AQUEOUS MEDIA
                                      ORGANIC LIQUID
                                                                                       RADIOACTIVE  MATERIALS
                                                                                                                            YES       YES
                                GENERAL  PHYSICS  CORPORATION
                                                                      AQUEOUS  MEDIA
                                                                      ORGANIC  LIQUID
                                                       DIOXINS/FURANS
                                                       HALOGENATED NONVOLATILES
                                                       HALOGENATED VOLATILES
                                                       NONHALOGENATED NONVOLATILES
                                                       NONHALOGENATED VOLATILES
                                                       NONVOLATILE METALS
                                                       ORGANIC CORROSIVES
                                                       ORGANIC CYANIDES
                                                       REDUCERS
                                                                                                                            YES       YES
                                GROUNDUATER  & ENVIRONMENTAL  SERVICE
                                      AQUEOUS MEDIA
                                      SEDIMENTS
                                      SLUDGES
                                      SOILS
                                                                                       NOT SPECIFIED
                                                                                                                            YES       INP
                                HUNTER  BIOSCIENCES,  INC.
                                                                      AQUEOUS MEDIA
                                                       HALOGENATED VOLATILES
                                                       NONHALOGENATED NONVOLATILES
                                                       NONHALOGENATED VOLATILES
                                                                                                                            YES       INP
                                INTERNATIONAL  PROCESS  RESEARCH  CORP
                                                                      AQUEOUS MEDIA
                                                                      ORGANIC LIQUID
                                                       HALOGENATED NONVOLATILES
                                                       HALOGENATED VOLATILES
                                                                                                                            YES       YES

-------
TREATMENT TECHNOLOGY
                                      COMPANY NAME
                       TABLE # 2 (CONTINUED)

                                      MEDIA TREATED
                                                                                          CONTAMINANT GROUPS
                                                                                                                            BENCH
                                                                                                                            SCALE
                                                                                                      PILOT
                                                                                                      SCALE
ACTIVATED CARBON
(continued)
INTERNATIONAL PROCESS RESEARCH  CORP
(continued)
 INORGANIC CORROSIVES
 INORGANIC CYANIDES
 NONHALOGENATED VOLATILES
 NONVOLATILE METALS
 ORGANIC CORROSIVES
 ORGANIC CYANIDES
 OXIDIZERS
 REDUCERS
                                IT CORPORATION
                                                                      AQUEOUS MEDIA
                                                                                       HALOGENATED NONVOLATILES
                                                                                       HALOGENATED VOLATILES
                                                                                       NONHALOGENATED  NONVOLATILES
                                                                                       NONHALOGENATED  VOLATILES
                                                                                       NONVOLATILE METALS
                                                                                                                            YES
                                                                                                                                      YES
                                KEYSTONE ENVIRONMENTAL  RESOURCES
                                                                      AQUEOUS  MEDIA
                                                      NONHALOGENATED NONVOLATILES
                                                      HALOGENATED NONVOLATILES
                                                      HALOGENATED VOLATILES
                                                      NONHALOGENATED VOLATILES
                                                      PCBs
                                                      PESTICIDES
                                                      DIOXINS/FURANS
                                                                                                                            YES
                                                                                                                                      YES
                                KIBER ASSOCIATES,  INC.
                                     AQUEOUS MEDIA
                                     ORGANIC LIQUID
HALOGENATED NONVOLATILES
HALOGENATED VOLATILES
NONHALOGENATED NONVOLATILES
NONHALOGENATED VOLATILES
NONVOLATILE METALS
ORGANIC CORROSIVES
ORGANIC CYANIDES
PCBs
VOLATILE METALS
                                                                                                                            YES
                                                                                                                                      NO
                                KSE,  INC.
                                     AQUEOUS MEDIA
                                     ORGANIC LIQUID
HALOGENATED VOLATILES
NONHALOGENATED VOLATILES
                                                                                                                            YES
                                                                                                                                      YES

-------
TREATMENT TECHNOLOGY
                       TABLE # 2 (CONTINUED)

      COMPANY NAME                    MEDIA TREATED       CONTAMINANT GROUPS
                                     BENCH     PILOT
                                     SCALE     SCALE
ACTIVATED CARBON
(continued)
KSE, INC.
(continued)
                                MAECORP,  INC.
                                MCNAMEE ADVANCED  TECHNOLOGY,  INC.
                                MIDWEST  RESEARCH  INSTITUTE
                                NATIONAL  SANITATION  FOUNDATION
                                O'BRIEN AND  GERE  ENGINEERS,  INC.
                                                                      AQUEOUS MEDIA
                                      AQUEOUS MEDIA
                                      SEDIMENTS
                                      SOILS
                                      SLUDGES
                                      OTHER SOLIDS
                                      AQUEOUS MEDIA

                                      NOT SPECIFIED

                                      AQUEOUS MEDIA
                                      ORGANIC LIQUID
NONVOLATILE METALS
VOLATILE METALS

DIOXINS/FURANS
PCBs

HALOGENATED NONVOLATILES
HALOGENATED VOLATILES
NONHALOGENATED VOLATILES
NONVOLATILE METALS
NONHALOGENATED NONVOLATILES

HALOGENATED VOLATILES
HALOGENATED NONVOLATILES
NONHALOGENATED NONVOLATILES
NONHALOGENATED VOLATILES
NOT SPECIFIED

HALOGENATED NONVOLATILES
HALOGENATED VOLATILES
NONHALOGENATED NONVOLATILES
NONHALOGENATED VOLATILES
PCBs
PESTICIDES
                                                                                                                           YES       YES
                                                                                                                            YES       YES
                                                                                                                            YES       YES
INP       INP

YES       YES
                                OHM  CORPORATION
                                                                      AQUEOUS  MEDIA
                                                                      ORGANIC  LIQUID
                                                                      SLUDGES
                                                       DIOXINS/FURANS
                                                       HALOGENATED NONVOLATILES
                                                       HALOGENATED VOLATILES
                                                       NONHALOGENATED VOLATILES
                                                       NONVOLATILE METALS
                                                       NONHALOGENATED NONVOLATILES
                                                       PCBs
                                                       PESTICIDES
                                                                                                                            YES
                                                                                                                                      YES

-------
TREATMENT TECHNOLOGY
                       TABLE # 2 (CONTINUED)

      COMPANY NAME                     MEDIA TREATED        CONTAMINANT  GROUPS
                                                                                                                            BENCH
                                                                                                                            SCALE
                                                                                                      PILOT
                                                                                                      SCALE
ACTIVATED CARBON
(continued)
OHM CORPORATION
(continued)

RADIAN CORPORATION
                                                                      AQUEOUS  MEDIA
                                                                      ORGANIC  LIQUID
                                REMEDIATION TECHNOLOGIES
                                                                     AQUEOUS MEDIA
                                                                     ORGANIC LIQUID
                               RIVER OAK ASSOCIATE;-
                                                                     AQUEOUS MEDIA
                                                                     ORGANIC LIQUID
                               RMT, INC.
                                     AQUEOUS MEDIA
 VOLATILE METALS

 HALOGENATED NONVOLATILES
 HALOGENATED VOLATILES
 NONHALOGENATED  NONVOLATILES
 NONHALOGENATED  VOLATILES
 NONVOLATILE METALS
 ORGANIC  CORROSIVES
 ORGANIC  CYANIDES
 OXIDIZERS
 PCBs
 PESTICIDES
 REDUCERS
 VOLATILE METALS

 HALOGENATED  NONVOLATILES
 NONHALOGENATED  VOLATILES
 HALOGENATED  VOLATILES
 NONHALOGENATED  NONVOLATILES
 ORGANIC  CORROSIVES
 ORGANIC  CYANIDES

 HALOGENATED  NONVOLATILES
 HALOGENATED  VOLATILES
 INORGANIC CORROSIVES
 INORGANIC CYANIDES
NONHALOGENATED  NONVOLATILES
NONVOLATILE METALS
OXIDIZERS
RADIOACTIVE MATERIALS
REDUCERS
VOLATILE METALS

REDUCERS
INORGANIC CORROSIVES
                                                                                           YES
                                                                                                     YES
                                                                                           YES
                                                                                                     YES
                                                                                           YES
                                                                                                     NO
                                                                                                                           YES
                                                                                                                                     YES

-------
TREATMENT TECHNOLOGY
                                      COMPANY  NAME
                       TABLE # 2 (CONTINUED)

                                      MEDIA TREATED
                                                                                          CONTAMINANT GROUPS
                                     BENCH
                                     SCALE
          PILOT
          SCALE
ACTIVATED CARBON
(continued)
RMT, INC.
(continued)
                                RNK ENVIRONMENTAL,  INC.
                                      AQUEOUS MEDIA
                                      ORGANIC LIQUID
NONHALOGENATED VOLATILES
HALOGENATED VOLATILES

ORGANIC CORROSIVES
ORGANIC CYANIDES
NONHALOGENATED NONVOLATILES
NONHALOGENATED VOLATILES
                                                                                                                           YES
                                                                                                                                     YES
                                ROY F.  WESTON,  INC.
                                      AQUEOUS MEDIA
                                      ORGANIC LIQUID
                                      SOILS
                                      SEDIMENTS
                                      SLUDGES
PESTICIDES
DIOXINS/FURANS
NONVOLATILE METALS
INORGANIC CYANIDES
ORGANIC CYANIDES
INORGANIC CORROSIVES
ORGANIC CORROSIVES
HALOGENATED VOLATILES
HALOGENATED NONVOLATILES
NONHALOGENATED VOLATILES
NONHALOGENATED NONVOLATILES
PCBs
                                                                                                                            YES
                                                                                                                                     YES
                                WESTERN RESEARCH  INSTITUTE
                                                                      AQUEOUS MEDIA
                                                                      ORGANIC LIQUID
                                                                      SLUDGES
                                                                      SOILS
                                                       INORGANIC CYANIDES
                                                       NONHALOGENATED NONVOLATILES
                                                       NONVOLATILE METALS
                                                       ORGANIC CYANIDES
                                                       PCBs
                                                                                                                            NO
                                                                                                                                      YES
                                YEC INC
                                ZENON ENVIRONMENTAL
                                      NOT SPECIFIED

                                      AQUEOUS MEDIA
                                      ORGANIC LIQUID
NOT SPECIFIED

NONHALOGENATED NONVOLATILES
DIOXINS/FURANS
HALOGENATED VOLATILES
NONHALOGENATED VOLATILES
ORGANIC CORROSIVES
ORGANIC CYANIDES
YES

YES
YES

YES

-------
 TREATMENT  TECHNOLOGY
                       TABLE # 2 (CONTINUED)

      COMPANY NAME                    MEDIA TREATED       CONTAMINANT GROUPS
                                                                                                                            BENCH
                                                                                                                            SCALE
                                                                                                      PILOT
                                                                                                      SCALE
ACTIVATED  CARBON
(continued)
ZENON ENVIRONMENTAL
(continued)
                                                                                       OXIDIZERS
                                                                                       PCBs
                                                                                       PESTICIDES
                                                                                       REDUCERS
ACTIVATED CARBON ADSORPTION     DIVERSIFIED ENGINEERING, INC.
                                      AQUEOUS  MEDIA
                                      ORGANIC  LIQUID
HALOGENATED VOLATILES
HALOGENATED NONVOLATILES
NONHALOGENATED VOLATILES
NONHALOGENATED NONVOLATILES
RADIOACTIVE MATERIALS
                                                                                                                            YES
                                                                                                                                      YES
<> ACTIVATED SLUDGE, SEE BIOLOGICAL

ADSORPTION                      AAA CSI
                                                                      AQUEOUS MEDIA
                                                                      ORGANIC LIQUID
                                APPLIED SURFACE TECHNOLOGY
                                                                      AQUEOUS  MEDIA
                                                                      ORGANIC  LIQUIDS
                                                                      SLUDGES
                                                                      SOILS
                                                      HALOGENATED NONVOLATILES
                                                      HALOGENATED VOLATILES
                                                      INORGANIC CORROSIVES
                                                      NONHALOGENATED NONVOLATILES
                                                      NONHALOGENATED VOLATILES
                                                      NONVOLATILE METALS
                                                      ORGANIC CORROSIVES
                                                      OXIDIZERS
                                                      PCBS
                                                      PESTICIDES
                                                      REDUCERS
                                                      VOLATILE METALS

                                                      INORGANIC CORROSIVES
                                                      OXIDIZERS
                                                      HALOGENATED NONVOLATILES
                                                      HALOGENATED VOLATILES
                                                      NONVOLATILE METALS
                                                      ORGANIC CYANIDES
                                                      INORGANIC CYANIDES
                                     NO
                                               NO
                                     YES
                                               YES

-------
TREATMENT TECHNOLOGY
                 TABLE # 2 (CONTINUED)

COMPANY NAME                    MEDIA TREATED
                                                                                          CONTAMINANT  GROUPS
                                     BENCH
                                     SCALE
PILOT
SCALE
ADSORPTION
(continued)
                                C-E ENVIRONMENTAL,  INC.
                                AQUEOUS MEDIA
                                ORGANIC LIQUID
HALOGENATED VOLATILES
HALOGENATED NOWVOLATILES
NONHALOGENATED VOLATILES
DIOXINS/FURANS
PCBs
PESTICIDES
                                                                                                                            YES
                                                                                                                                      YES
                                C-E ENVIRONMENTAL,  INC.
                                AQUEOUS MEDIA
                                ORGANIC LIQUID
HALOGENATED VOLATILES
NONHALOGENATED VOLATILES
HALOGENATED NONVOLATILES
DIOXINS/FURANS
PCBs
PESTICIDES
                                                                                                                            INP       IMP
                                C-EE BIOREMEDIATION SYSTEMS
                                                                      AQUEOUS MEDIA
                                                                      ORGANIC LIQUID
                                                 HALOGENATED NONVOLATILES
                                                 HALOGENATED VOLATILES
                                                 NONHALOGENATED NONVOLATILES
                                                 NONHALOGENATED VOLATILES
                                                 PCBs
                                                 PESTICIDES
                                                                                                                            YES       NO
                                CHEMENCO,  INC.
                                AQUEOUS MEDIA
                                ORGANIC LIQUID
                                                                                       NOT SPECIFIED
                                                                                                                            YES       NO
                                DETOX,  INC.
                                AQUEOUS MEDIA
                                ORGANIC LIQUID
                                SEDIMENTS
                                SLUDGES
                                SOILS
HALOGENATED VOLATILES
HALOGENATED NONVOLATILES
NONHALOGENATED VOLATILES
NONHALOGENATED NONVOLATILES
PESTICIDES
DIOXINS/FURANS
ORGANIC CYANIDES
ORGANIC CORROSIVES
VOLATILE METALS
NONVOLATILE METALS
                                                                                                                            YES       YES

-------
TREATMENT TECHNOLOGY
                 TABLE # 2 (CONTINUED)

COMPANY NAME                    MEDIA TREATED        CONTAMINANT  GROUPS
                                                                                                                            BENCH
                                                                                                                            SCALE
                                                                                               PILOT
                                                                                               SCALE
ADSORPTION
(continued)
                                E M & C ENGINEERING ASSOCIATES
                                                                      AQUEOUS MEDIA
                                                                      ORGANIC LIQUID
                                                DIOXINS/FURANS
                                                HALOGENATED NONVOLATILES
                                                HALOGENATED VOLATILES
                                                INORGANIC CORROSIVES
                                                INORGANIC CYANIDES
                                                NONVOLATILE METALS
                                                ORGANIC CYANIDES
                                                OXIDIZERS
                                                PCBs
                                                PESTICIDES
                                                REDUCERS
                                                VOLATILE METALS
                                      INP
                                                INP
                                EARTH  TECHNOLOGY CORP.
                                                                     AQUEOUS MEDIA
                                                                     ORGANIC LIQUID
                                                NONHALOGENATED VOLATILES
                                                                                     YES       NO
                                ENSOTECH,  INC.
                               ORGANIC LIQUID
                               AQUEOUS MEDIA
HALOGENATED NONVOLATILES
HALOGENATED VOLATILES
INORGANIC CORROSIVES
INORGANIC CYANIDES
NONHALOGENATED NONVOLATILES
NONHALOGENATED VOLATILES
NONVOLATILE METALS
OXIDIZERS
REDUCERS
                                                                                                                           YES       YES
                               ENVIROTECH MID-ATLANTIC
                                                                     AQUEOUS MEDIA
                                                                     ORGANIC LIQUID
                                                HALOGENATED NONVOLATILES
                                                HALOGENATED VOLATILES
                                                NONHALOGENATED NONVOLATILES
                                                NONHALOGENATED VOLATILES
                                                NONVOLATILE METALS
                                     YES       YES
                               GENERAL PHYSICS CORPORATION
                                                                     SOILS
                                                                     SLUDGES
                                                DIOXINS/FURANS
                                                HALOGENATED NONVOLATILES
                                     YES       NO

-------
TREATMENT TECHNOLOGY
                                                      TABLE # 2 (CONTINUED)

                                      COMPANY NAME                    MEDIA TREATED
                                                         CONTAMINANT GROUPS
                                                     BENCH
                                                     SCALE
                                               PILOT
                                               SCALE
ADSORPTION
(continued)
GENERAL PHYSICS  CORPORATION
(continued)
SEDIMENTS
                                HUNTER SERVICES,  INC.
                                      AQUEOUS  MEDIA
                                      ORGANIC  LIQUID
                                HUNTER SERVICES,  INC.
                                      AQUEOUS MEDIA
                                      ORGANIC LIQUID
HALOGENATED VOLATILES
INORGANIC CORROSIVES
INORGANIC CYANIDES
NONHALOGENATED NONVOLATILES
NONHALOGENATED VOLATILES
NONVOLATILE METALS
PCBs
PESTICIDES
VOLATILE METALS

DIOXINS/FURANS
HALOGENATED NONVOLATILES
HALOGENATED VOLATILES
INORGANIC CORROSIVES
NONHALOGENATED NONVOLATILES
NONHALOGENATED VOLATILES
NONVOLATILE METALS
ORGANIC CORROSIVES
ORGANIC CYANIDES
PCBs
PESTICIDES
VOLATILE METALS

DIOXINS/FURANS
HALOGENATED NONVOLATILES
HALOGENATED VOLATILES
INORGANIC CORROSIVES
NONHALOGENATED NONVOLATILES
NONHALOGENATED VOLATILES
NONVOLATILE METALS
ORGANIC CORROSIVES
ORGANIC CYANIDES
PCBs
PESTICIDES
VOLATILE METALS
                                                                                                                           YES
                                                                                                                                     YES
                                                                                                                           YES
                                                                                                                                     YES

-------
            TREATMEMT TECHNOLOGY
                 TABLE # 2 (CONTINUED)

COMPANY NAME                    MEDIA TREATED        CONTAMINANT  GROUPS
                                                                                                                                        BENCH
                                                                                                                                        SCALE
                                                                                                PILOT
                                                                                                SCALE
            ADSORPTION
            (continued)
                                            INTERNATIONAL PROCESS RESEARCH  CORP
                                            KSE,  INC.
oo
o
                                            MCNAMEE ADVANCED TECHNOLOGY, INC.
                                           O'BRIEN AND GERE ENGINEERS, INC.
                                                                                  AQUEOUS MEDIA
                                                                                  ORGANIC LIQUID
                               AQUEOUS MEDIA
                               ORGANIC LIQUID
                               AQUEOUS MEDIA
                               AQUEOUS MEDIA
                               ORGANIC LIQUID
 HALOGENATED  NONVOLATILES
 HALOGENATED  VOLATILES
 INORGANIC CORROSIVES
 INORGANIC CYANIDES
 NONHALOGENATED VOLATILES
 NONVOLATILE  METALS
 ORGANIC CORROSIVES
 ORGANIC CYANIDES
 OXIDIZERS
 REDUCERS

 HALOGENATED  VOLATILES
 NONHALOGENATED VOLATILES
 NONVOLATILE  METALS
 VOLATILE METALS

 HALOGENATED  NONVOLATILES
 HALOGENATED VOLATILES
 NONVOLATILE METALS
 NONHALOGENATED VOLATILES
 NONHALOGENATED NONVOLATILES

 HALOGENATED NONVOLATILES
 HALOGENATED VOLATILES
NONHALOGENATED VOLATILES
ORGANIC CYANIDES
PCBs
PESTICIDES
VOLATILE METALS
                                                                                      YES
                                                                                               YES
                                                                                                                                       YES       YES
                                                                                                                                       YES       YES
                                                                                                                                       YES       YES
                                           OHM CORPORATION
                                                                                 AQUEOUS MEDIA
                                                                                 ORGANIC LIQUID
                                                                                 SLUDGES
                                                DIOXINS/FURANS
                                                HALOGENATED NONVOLATILES
                                                HALOGENATED VOLATILES
                                                NONHALOGENATED VOLATILES
                                     YES       YES

-------
TREATMENT TECHNOLOGY
                                                       TABLE  # 2  (CONTINUED)

                                      COMPANY NAME                    MEDIA TREATED
                                                          CONTAMINANT  GROUPS
                                     BENCH
                                     SCALE
PILOT
SCALE
ADSORPTION
(continued)
OHM CORPORATION
(continued)
                                RIVER OAK ASSOCIATES
                                      AQUEOUS MEDIA
                                      ORGANIC LIQUID
                                RMT, INC.
                                      AQUEOUS MEDIA
                                      SEDIMENTS
                                      SOILS
                                      SLUDGES
NONVOLATILE METALS
NONHALOGENATED NONVOLATILES
PCBs
PESTICIDES
VOLATILE METALS

HALOGENATED NONVOLATILES
HALOGENATED VOLATILES
INORGANIC CORROSIVES
INORGANIC CYANIDES
NONHALOGENATED NONVOLATILES
NONVOLATILE METALS
OXIDIZERS
RADIOACTIVE MATERIALS
REDUCERS
VOLATILE METALS

HALOGENATED NONVOLATILES
INORGANIC CORROSIVES
NONHALOGENATED NONVOLATILES
NONVOLATILE METALS
PCBs
INORGANIC CYANIDES
OXIDIZERS
PESTICIDES
VOLATILE METALS
REDUCERS
                                                                                                                            YES
                                                                                                                                      NO
                                                                                                                            YES
                                                                                                                                      NO
                                SYBRON CHEMICALS, INC.
                                      AQUEOUS MEDIA
                                      ORGANIC LIQUID
HALOGENATED NONVOLATILES
HALOGENATED VOLATILES
INORGANIC CYANIDES
NONHALOGENATED VOLATILES
NONVOLATILE METALS
ORGANIC CYANIDES
                                                                                                                            YES
                                                                                                                                      YES

-------
                                                        TABLE  #  2  (CONTINUED)
TREATMENT TECHNOLOGY COMPANY NAME
ADSORPTION TREATEK, INC.
(continued)






MEDIA TREATED

AQUEOUS MEDIA
ORGANIC LIQUID
SEDIMENTS
SLUDGES
SOILS


CONTAMINANT GROUPS

HALOGENATED NONVOLATILES
HALOGENATED VOLATILES
NONHALOGENATED NONVOLATILES
NONHALOGENATED VOLATILES
NONVOLATILE METALS
PCBs
PESTICIDES
BENCH PILOT
SCALE SCALE

YES YES






                                VERSAR  INC.
                                WOODWARD CLYDE CONSULTANTS


                                YEC INC

                                YEC INC

                                ZIMPRO PASSAVANT
                                      AQUEOUS MEDIA    DIOX1NS/FURANS
                                                       HALOGENATED NONVOLATILES
                                                       HALOGENATED VOLATILES
                                                       NONHALOGENATED VOLATILES
                                                       INORGANIC CYANIDES
                                                       NONHALOGENATED NONVOLATILES

                                      AQUEOUS MEDIA    NOT SPECIFIED
                                      ORGANIC LIQUID

                                      NOT SPECIFIED    NOT SPECIFIED

                                      NOT SPECIFIED    NOT SPECIFIED

                                      AQUEOUS MEDIA    HALOGENATED VOLATILES
                                                       NONHALOGENATED VOLATILES
                                                       PCBs
                                                       HALOGENATED NONVOLATILES
                                                       NONHALOGENATED NONVOLATILES
                                                       PESTICIDES
                                                                                                                            YES
                                                                                                                                      NO
                                     YES


                                     YES

                                     YES

                                     YES
YES


YES

YES

YES
ADSORPTION/ABSORPTI ON
MAECORP, INC.
                                                                      AQUEOUS MEDIA
NONHALOGENATED VOLATILES
HALOGENATED VOLATILES
NONVOLATILE METALS
VOLATILE METALS
PCBs
                                                                                                                            YES
                                                                                                                                      YES

-------
                                                       TABLE  #  2  (CONTINUED)
TREATMENT TECHNOLOGY
ADSORPT I ON/ABSORPT I ON
(continued)
COMPANY NAME
MAECORP, INC.
(continued)
MEDIA TREATED CONTAMINANT GROUPS
DIOXINS/FURANS
BENCH
SCALE

PILOT
SCALE

AEROBIC PACT
                                ZIMPRO PASSAVANT
AQUEOUS MEDIA
ORGANIC LIQUID
HALOGENATED VOLATILES
NONHALOGENATED VOLATILES
PESTICIDES
HALOGENATED NONVOLATILES
NONHALOGENATED NONVOLATILES
                                                                                                                           YES
                                                                                                                                     YES
ANAEROBIC PACT
                                ZIMPRO PASSAVANT
                                                                      AQUEOUS  MEDIA
                                                                      ORGANIC  LIQUID
                 HALOGENATED VOLATILES
                 NONHALOGENATED VOLATILES
                 HALOGENATED NONVOLATILES
                 NONHALOGENATED NONVOLATILES
                                                                                                                           YES
                                                                                                                                     YES
CATALYSIS
                                AAA CSI
AQUEOUS MEDIA
ORGANIC LIQUID
HALOGENATED NONVOLATILES
HALOGENATED VOLATILES
INORGANIC CORROSIVES
NONHALOGENATED NONVOLATILES
NONHALOGENATED VOLATILES
NONVOLATILE METALS
ORGANIC CORROSIVES
OXIDIZERS
PCBS
PESTICIDES
REDUCERS
VOLATILE METALS
                                                                                                                           NO
                                                                                                                                     NO
                                APPLIED  SURFACE  TECHNOLOGY
AQUEOUS MEDIA    INORGANIC CORROSIVES
ORGANIC LIQUIDS  OXIDIZERS
SLUDGES          HALOGENATED NONVOLATILES
SOILS            HALOGENATED VOLATILES
                 NONVOLATILE METALS
                 ORGANIC CYANIDES
                                                                                                                            YES
                                                                                                                                      YES

-------
TREATMENT TECHNOLOGY
                       TABLE # 2 (CONTINUED)

      COMPANY NAME                    MEDIA TREATED       CONTAMINANT GROUPS
                                                                                                                            BENCH     PILOT
                                                                                                                            SCALE     SCALE
CATALYSIS
(continued)
APPLIED SURFACE TECHNOLOGY
(continued)
 INORGANIC CYANIDES
                                CHEMENCO. INC.
                                      AQUEOUS MEDIA    NOT SPECIFIED
                                      ORGANIC LIQUID
                                                                                            YES       NO
                                E M & C ENGINEERING ASSOCIATES
                                                                      AQUEOUS MEDIA
                                                                      ORGANIC LIQUID
                                                       DIOXINS/FURANS
                                                       HALOGENATED NONVOLATILES
                                                       HALOGENATED VOLATILES
                                                       INORGANIC CORROSIVES
                                                       INORGANIC CYANIDES
                                                       NONVOLATILE METALS
                                                       ORGANIC CYANIDES
                                                       OXIDIZERS
                                                       PCBs
                                                       PESTICIDES
                                                       REDUCERS
                                                       VOLATILE METALS
                                                                                                                            INP       INP
                                GENERAL PHYSICS  CORPORATION
                                                                      AQUEOUS MEDIA
                                                                      ORGANIC LIQUID
                                                       NONVOLATILE METALS
                                                       ORGANIC CORROSIVES
                                                       VOLATILE METALS
                                                                                                                            YES       NO
                                IT  CORPORATION
                                                                      AQUEOUS  MEDIA
                                                                      ORGANIC  LIQUID
                                                                      SOILS
                                                                      SEDIMENTS
                                                       DIOXINS/FURANS
                                                       HALOGENATEO  NONVOLATILES
                                                       HALOGENATED  VOLATILES
                                                       NONHALOGENATED  NOMVOLATILES
                                                       NONHALOGENATED  VOLATILES
                                                       NONVOLATILE  METALS
                                                       OXIDIZERS
                                                       PESTICIDES
                                                                                                                            YES       YES
                                KSE,  INC.
                                     AQUEOUS  MEDIA
                                     ORGAINC  LIQUID
HALOGENATED VOLATILES
NONHALOGENATED VOLATILES
NONVOLATILE METALS
VOLATILE METALS
                                                                                            YES       YES

-------
TREATMENT  TECHNOLOGY
                 TABLE # 2 (CONTINUED)

COMPANY NAME                    MEDIA TREATED       CONTAMINANT GROUPS
                                                                                                                            BENCH     PILOT
                                                                                                                            SCALE     SCALE
CATALYSIS
(continued)
                                MAECORP, INC.
                                O'BRIEN AND GERE ENGINEERS, INC.
                                RMT, INC.
                                WOODWARD CLYDE CONSULTANTS
                                AQUEOUS MEDIA
                                ORGANIC LIQUID
                                OTHER SOLIDS

                                AQUEOUS MEDIA
                                ORGANIC LIQUID
                                SEDIMENTS
                                SLUDGES
                                SOILS

                                AQUEOUS MEDIA
                                ORGANIC LIQUID
                                                                      SEDIMENTS
                                                                      SLUDGES
                                                                      SOILS
                                                                      OTHER SOLIDS
NOT SPECIFIED
DIOXINS/FURANS
                                                                                                                            YES       YES
                                     YES       YES
NONHALOGENATED NONVOLATILES
NONHALOGENATED VOLATILES
OXIDIZERS
REDUCERS

NOT SPECIFIED
                                                                                                                            YES       YES
                                                                                                                            YES       YES
CENTRIFUGATION
                                AAA CSI
                                                                      AQUEOUS MEDIA
                                                                      ORGANIC LIQUID
                                                 HALOGENATED NONVOLATILES
                                                 HALOGENATED VOLATILES
                                                 INORGANIC CORROSIVES
                                                 NONHALOGENATED NONVOLATILES
                                                 NONHALOGENATED VOLATILES
                                                 NONVOLATILE METALS
                                                 ORGANIC CORROSIVES
                                                 OXIDIZERS
                                                 PCBs
                                                 PESTICIDES
                                                 REDUCERS
                                                 VOLATILE METALS
                                                                                                                            NO        NO

-------
TREATMENT TECHNOLOGY
                       TABLE # 2 (CONTINUED)

      COMPANY NAME                    MEDIA TREATED       CONTAMINANT GROUPS
                                                                                                                            BENCH
                                                                                                                            SCALE
                                                                                                      PILOT
                                                                                                      SCALE
CENTRIFUGATION
(continued)
DIVERSIFIED ENGINEERING, INC.
                                ROY f. WESTON, INC.
                                                                      AQUEOUS MEDIA
                                                                      ORGANIC LIQUID
                                                                      SEDIMENTS
                                                                      SLUDGES
                                      SEDIMENTS
                                      SLUDGES
                                      SOILS
HALOGENATED NONVOLATILES
NONHALOGENATED NONVOLATILES
ORGANIC CORROSIVES
INORGANIC CORROSIVES
NONVOLATILE METALS
RADIOACTIVE MATERIALS

PESTICIDES
DIOXINS/FURANS
NONVOLATILE METALS
INORGANIC CYANIDES
INORGANIC CORROSIVES
ORGANIC CYANIDES
ORGANIC CORROSIVES
HALOGENATED NONVOLATILES
HALOGENATED VOLATILES
NONHALOGENATED NONVOLATILES
NONHALOGENATED VOLATILES
PCBs
                                                                                                                            YES
                                                                                                                                      INP
YES       YES
CHEMICAL OECHLORINATION
                                C-E ENVIRONMENTAL, INC.

                                C-E ENVIRONMENTAL, INC.
                                     AQUEOUS MEDIA    NOT SPECIFIED
                                     SEDIMENTS
                                     SLUDGES
                                     SOILS
                                     OTHER SOLIDS
NOT SPECIFIED
YES

YES
YES

YES
CHEMICAL EXTRACTION
                                AAA CSI
                                                                      SEDIMENTS        HALOGENATED NONVOLATILES
                                                                      SLUDGES          HALOGENATED VOLATILES
                                                                      SOILS            INORGANIC CORROSIVES
                                                                                       NONHALOGENATED NONVOLATILES
                                                                                       NONHALOGENATED VOLATILES
                                                                                       NONVOLATILE METALS
                                                                                           NO
                                                                                                     NO

-------
            TREATMENT TECHNOLOGY
                       TABLE # 2 (CONTINUED)

      COMPANY NAME                    MEDIA TREATED       CONTAMINANT GROUPS
                                     BENCH     PILOT
                                     SCALE     SCALE
            CHEMICAL EXTRACTION
            (continued)
AAA CSI
(continued)
ORGANIC CORROSIVES
OXIDIZERS
PCBs
PESTICIDES
REDUCERS
VOLATILE METALS
                                            APPLIED  SURFACE  TECHNOLOGY
oo
•vl
                                            C-E  ENVIRONMENTAL.  INC.
                                      AQUEOUS MEDIA
                                      ORGANIC LIQUIDS
                                      SLUDGES
                                      SOILS
                                      SLUDGES
                                      SOILS
INORGANIC CORROSIVES
OXIDIZERS
HALOGENATED NONVOLATILES
HALOGENATED VOLATILES
NONVOLATILE METALS
ORGANIC CYANIDES
INORGANIC CYANIDES

NOT SPECIFIED
                                                                                                                                        YES        YES
                                                                                                                                        YES       YES
                                            C-EE  BIOREMEDIATION  SYSTEMS
                                      SEDIMENTS        HALOGENATED NONVOLATILES
                                      SLUDGES          HALOGENATED VOLATILES
                                      SOILS            NONHALOGENATED NONVOLATILES
                                                       NONHALOGENATED VOLATILES
                                                       PCBs
                                                       PESTICIDES
                                                                                                                                        YES       NO
                                            CHEMENCO,  INC.
                                      SOILS
                                      SLUDGES
                                      SEDIMENTS
                                      OTHER SOLIDS
                                      AQUEOUS MEDIA
                                                                                                   NOT SPECIFIED
                                                                                                                                        YES       NO
                                            DETOX,  INC.
                                      AQUEOUS MEDIA
                                      ORGANIC LIQUID
                                      SEDIMENTS
                                      SLUDGES
HALOGENATED VOLATILES
HALOGENATED NONVOLATILES
NONHALOGENATED VOLATILES
NONHALOGENATED NONVOLATILES
                                                                                                                                        YES       YES

-------
TREATMENT TECHNOLOGY
                       TABLE # 2 (CONTINUED)

      COMPANY NAME                    MEDIA TREATED
                                                                                          CONTAMINANT GROUPS
                                                      BENCH
                                                      SCALE
PILOT
SCALE
CHEMICAL EXTRACTION
(continued)
DETOX,  INC.
(continued)
SOILS
                 PESTICIDES
                 DIOXINS/FURANS
                 ORGANIC CYANIDES
                 ORGANIC CORROSIVES
                 VOLATILE METALS
                 NONVOLATILE METALS
                                E M & C ENGINEERING ASSOCIATES
                                      SLUDGES
                                      OTHER  SOLIDS
                                      SOILS
                                                                                       DIOXINS/FURANS
                                                                                       HALOGENATED  NONVOLATILES
                                                                                       HALOGENATED  VOLATILES
                                                                                       INORGANIC  CORROSIVES
                                                                                       INORGANIC  CYANIDES
                                                                                       NONVOLATILE  METALS
                                                                                       ORGANIC  CYANIDES
                                                                                       OXIDIZERS
                                                                                       PCBs
                                                                                       PESTICIDES
                                                                                       REDUCERS
                                                                                       VOLATILE METALS
                                                                                                                            INP
                                                                                                                                      INP
                                EARTH  TECHNOLOGY  CORP.
                                                                     OTHER  SOLIDS
                                                                     SEDIMENTS
                                                                     SLUDGES
                                                                     SOILS
                                                                                      NOT SPECIFIED
                                                                                           YES
                                                                                                                                      NO
                                ENRECO TECHNOLOGIES GROUP
                                                                      SLUDGES
                                                                      SOILS
                                                                      SEDIMENTS
                                                                      OTHER SOLIDS
                                                      HALOGENATED VOLATILES
                                                      NONHALOGENATED VOLATILES
                                                      PESTICIDES
                                                      VOLATILE METALS
                                                      NONVOLATILE METALS
                                                      ORGANIC CORROSIVES
                                                                                                                            YES
                                                                                                                                      YES
                                ENSOTECH,  INC.
                                     OTHER SOLIDS
                                     SEDIMENTS
                                     SLUDGES
                 HALOGENATED  NONVOLATILES
                 HALOGENATED  VOLATILES
                 INORGANIC  CORROSIVES
                                                                                                                            YES
                                                                                                                                      YES

-------
TREATMENT TECHNOLOGY
                       TABLE # 2 (CONTINUED)

      COMPANY NAME                    MEDIA TREATED
                                                                                          CONTAMINANT GROUPS
                                                      BENCH     PILOT
                                                      SCALE     SCALE
CHEMICAL EXTRACTION
(continued)
ENSOTECH,  INC.
(continued)
                                ENVIROTECH  MID-ATLANTIC
                                ENWRIGHT ENVIRONMENTAL,  INC.
                                I IT RESEARCH  INST
SOILS
                                      SEDIMENTS
                                      SLUDGES
                                      SOILS
                                      SEDIMENTS
                                      SLUDGES
                                      SOILS

                                      SLUDGES
                                      OTHER SOLIDS
                                      SOILS
                                INTERNATIONAL PROCESS RESEARCH CORP   SOILS
INORGANIC CYANIDES
NONHALOGENATED NONVOLATILES
NONHALOGENATED VOLATILES
NONVOLATILE METALS
OXIDIZERS
REDUCERS

HALOGENATED NONVOLATILES
HALOGENATED VOLATILES
NONHALOGENATED NONVOLATILES
NONHALOGENATED VOLATILES
NONVOLATILE METALS

RADIOACTIVE MATERIALS
                 DIOXINS/FURANS
                 HALOGENATED NONVOLATILES
                 HALOGENATED VOLATILES
                 NONHALOGENATED NONVOLATILES
                 PCBs
                 PESTICIDES

                 HALOGENATED NONVOLATILES
                 HALOGENATED VOLATILES
                 INORGANIC CORROSIVES
                 INORGANIC CYANIDES
                 NONHALOGENATED VOLATILES
                 NONVOLATILE METALS
                 ORGANIC CORROSIVES
                 ORGANIC CYANIDES
                 OXIDIZERS
                 REDUCERS
                                                                                                                            YES       YES
                                                                                                                            YES       NO
                                                                                                                            YES       YES
                                                                                                                            YES       YES

-------
TREATMENT TECHNOLOGY
                       TABLE # 2 (CONTINUED)

      COMPANY NAME                    MEDIA TREATED        CONTAMINANT  GROUPS
                                     BENCH
                                     SCALE
PILOT
SCALE
CHEMICAL EXTRACTION
(continued)
IT CORPORATION
                                      ORGANIC  LIQUID
                                      SOILS
                                      SLUDGES
                                      OTHER  SOLIDS
DIOXINS/FURANS
HALOGENATED NONVOLATILES
INORGANIC CYANIDES
NONHALOGENATED NONVOLATILES
NONVOLATILE METALS
ORGANIC CYANIDES
                                                                                            YES
                                                                                                      YES
                                KSE, INC.
                                      SOILS
                                      SLUDGES
                                      OTHER  SOLIDS
HALOGENATED VOLATILES
NONHALOGENATED VOLATILES
NONVOLATILE METALS
VOLATILE METALS
                                                                                                                            YES       YES
                                MAECORP,  INC.
                                     SEDIMENTS         NONVOLATILE METALS
                                     SLUDGES           HALOGENATED NONVOLATILES
                                     SOILS             HALOGENATED VOLATILES
                                                       VOLATILE METALS
                                                                                                                            YES       YES
                                MCNAMEE ADVANCED TECHNOLOGY,  INC.
                                     SLUDGES
                                     SOILS
                                     AQUEOUS MEDIA
HALOGENATED NONVOLATILES
NONHALOGENATED NONVOLATILES
NONVOLATILE METALS
INORGANIC CYANIDES
                                                                                                                            YES
                                                                                                                                      YES
                                OHM CORPORATION
                                                                      SOILS
                                                                      ORGANIC  LIQUID
                                                                      OTHER  SOLIDS
                                                                      SLUDGES
                                                      PESTICIDES
                                                      HALOGENATED NONVOLATILES
                                                      VOLATILE METALS
                                                      PCBs
                                                      NONVOLATILE METALS
                                                      NONHALOGENATED NONVOLATILES
                                                                                                                            YES       YES
                                PITTSBURGH MIN&ENV.TECH.,  INC.
                                     SEDIMENTS
                                     SLUDGES
                                     SOILS
NONVOLATILE METALS
VOLATILE METALS
                                                                                                                            YES       YES
                                RADIAN CORPORATION
                                                                     AQUEOUS  MEDIA
                                                                     ORGANIC  LIQUID
                                                      HALOGENATED NONVOLATILES
                                                      HALOGENATED VOLATILES
                                                                                                                            YES       YES

-------
TREATMENT TECHNOLOGY
                                      COMPANY NAME
                       TABLE # 2 (CONTINUED)

                                      MEDIA TREATED
                                                                                         CONTAMINANT GROUPS
                                                                                                                           BENCH
                                                                                                                           SCALE
                                                                                                     PILOT
                                                                                                     SCALE
CHEMICAL EXTRACTION
(continued)
RADIAN CORPORATION
(continued)
                                                                                      NONHALOGENATED NONVOLATILES
                                                                                      NONHALOGENATED VOLATILES
                                                                                      NONVOLATILE METALS
                                                                                      ORGANIC CORROSIVES
                                                                                      ORGANIC CYANIDES
                                                                                      OXIDIZERS
                                                                                      PCBs
                                                                                      PESTICIDES
                                                                                      REDUCERS
                                                                                      VOLATILE METALS
                                REMEDIATION TECHNOLOGIES
                                                                     SEDIMENTS        HALOGENATED VOLATILES
                                                                     SOILS            HALOGENATED NONVOLATILES
                                                                     SLUDGES          INORGANIC CORROSIVES
                                                                                      INORGANIC CYANIDES
                                                                                      NONHALOGENATED VOLATILES
                                                                                      NONHALOGENATED NONVOLATILES
                                                                                      NONVOLATILE METALS
                                                                                      VOLATILE METALS
                                                                                                                           YES
                                                                                                                                     NO
                               RMC ENV & ANALYTICAL LABORATORIES
                                                                     SEDIMENTS        DIOXINS/FURANS
                                                                     SLUDGES          HALOGENATED NONVOLATILES
                                                                     SOILS            HALOGENATED VOLATILES
                                                                                      NONHALOGENATED NONVOLATILES
                                                                                      NONHALOGENATED VOLATILES
                                                                                      NONVOLATILE METALS
                                                                                      ORGANIC CORROSIVES
                                                                                      ORGANIC CYANIDES
                                                                                      PCBs
                                                                                      PESTICIDES
                                                                                                                           INP
                                                                                                                                     INP
                               RMT, INC.
                                      SEDIMENTS        HALOGENATED NONVOLATILES
                                      SLUDGES          NONHALGOENATED  NONVOLATILES
                                      SOILS            NONVOLATILE METALS
                                                      PCBs
                                                                                           YES
                                                                                                      YES

-------
            TREATMENT  TECHNOLOGY
                                                 COMPANY NAME
                       TABLE  #  2  (CONTINUED)

                                      MEDIA TREATED
                                                                                                     CONTAMINANT GROUPS
                                     BENCH
                                     SCALE
PILOT
SCALE
            CHEMICAL EXTRACTION
            (continued)
RMT, INC.
(continued)
HALOGENATED VOLATILES
INORGANIC CYANIDES
NONHALOGENATED VOLATILES
VOLATILE METALS
                                           ROY F. WESTON, INC.

-------
TREATMENT TECHNOLOGY
                       TABLE # 2 (CONTINUED)

      COMPANY NAME                    MEDIA TREATED       CONTAMINANT  GROUPS
                                                                                                                           BENCH     PILOT
                                                                                                                           SCALE     SCALE
CHEMICAL OXIDATION
(continued)
AAA CSI
(continued)
                                                                                      PCBs
                                                                                      PESTICIDES
                                                                                      REDUCERS
                                                                                      VOLATILE METALS
                               ANDCO  ENVIRONMENTAL PROCESSES, INC.   AQUEOUS MEDIA    NOT SPECIFIED
                               APPLIED SURFACE TECHNOLOGY
                               CAMBRIDGE SCIENTIFIC, INC.

                               DETOX, INC.
                               DIVERSIFIED ENGINEERING, INC.
                                                                     AQUEOUS MEDIA
                                                                     ORGANIC LIQUIDS
                                                                     SLUDGES
                                                                     SOILS
                                      SOILS

                                      AQUEOUS MEDIA
                                      ORGANIC LIQUID
                                      SEDIMENTS
                                      SLUDGES
                                      SOILS
                                      AQUEOUS  MEDIA
                                      ORGANIC  LIQUID
INORGANIC CORROSIVES
OXIDIZERS
HALOGENATED NONVOLATILES
HALOGENATED VOLATILES
NONVOLATILE METALS
ORGANIC CYANIDES
INORGANIC CYANIDES

NOT SPECIFIED

HALOGENATED VOLATILES
HALOGENATED NONVOLATILES
NONHALOGENATED VOLATILES
NONHALOGENATED NONVOLATILES
PESTICIDES
DIOXINS/FURANS
ORGANIC CYANIDES
ORGANIC CORROSIVES
VOLATILE METALS
NONVOLATILE METALS

INORGANIC CORROSIVES
INORGANIC CYANIDES
ORGANIC CYANIDES
NONVOLATILE METALS
REDUCERS
HALOGENATED NONVOLATILES
NONHALOGENATED NONVOLATILES
                                                                                            YES

                                                                                            YES
          YES

          YES
YES

YES
NO

YES
YES
YES

-------
TREATMENT TECHNOLOGY
                                                       TABLE # 2 (CONTINUED)

                                      COMPANY NAME                    MEDIA TREATED       CONTAMINANT GROUPS
                                                                                            BENCH
                                                                                            SCALE
                                               PILOT
                                               SCALE
CHEMICAL OXIDATION
(continued)
DIVERSIFIED ENGINEERING, INC.
(continued)
OXIDIZERS
ORGANIC CORROSIVES
                                E M & C ENGINEERING ASSOCIATES
                                      AQUEOUS MEDIA
                                      ORGANIC LIQUID
DIOXINS/FURANS
HALOGENATED NONVOLATILES
HALOGENATED VOLATILES
INORGANIC CORROSIVES
INORGANIC CYANIDES
NONVOLATILE METALS
ORGANIC CYANIDES
OXIDIZERS
PCBs
PESTICIDES
REDUCERS
VOLATILE METALS
                                                                                                                            INP
                                                                                                                                      INP
                                ENSOTECH, INC.
                                      ORGANIC LIQUID
                                      AQUEOUS MEDIA
HALOGENATED NONVOLATILES
HALOGENATED VOLATILES
INORGANIC CORROSIVES
INORGANIC CYANIDES
NONHALOGENATED NONVOLATILES
NONHALOGENATEO VOLATILES
NONVOLATILE METALS
OXIDIZERS
REDUCERS
                                                                                                                            YES
                                                                                                                                      YES
                                ENVIRONMENTAL RESOURCE ASSOCIATES
                                                                      NOT SPECIFIED
                                                       HALOGENATED NONVOLATILES
                                                       HALOGENATED VOLATILES
                                                       INORGANIC CORROSIVES
                                                       NONHALOGENATED NONVOLATILES
                                                       NONHALOGENATED VOLATILES
                                                       NONVOLATILE METALS
                                                                                                                            YES
                                                                                                                                      NO
                                ENVIRONMENTAL TECHNOLOGY SOUTHEAST
                                                                      AQUEOUS MEDIA
                                                       HALOGENATED NONVOLATILES
                                                       HALOGENATED VOLATILES
                                                                                                                            INP
                                                                                                                                      INP

-------
TREATMENT TECHNOLOGY
                       TABLE # 2 (CONTINUED)

      COMPANY NAME                    MEDIA TREATED        CONTAMINANT GROUPS
                                                                                                                           BENCH     PILOT
                                                                                                                           SCALE     SCALE
CHEMICAL OXIDATION
(continued)
ENVIRONMENTAL TECHNOLOGY SOUTHEAST
(continued)
NONHALOGENATED NONVOLATILES
NONHALOGENATED VOLATILES
NONVOLATILE METALS
                                ENWRIGHT  ENVIRONMENTAL,  INC.
                                      AQUEOUS MEDIA
                                      ORGANIC LIQUID
                                                       RADIOACTIVE  MATERIALS
                                                                                            YES        YES
                                GENERAL  PHYSICS  CORPORATION
                                                                      AQUEOUS  MEDIA
                                                                      ORGANIC  LIQUID
                                                                      SEDIMENTS
                                                                      SLUDGES
                                                                      SOILS
                                                       HALOGENATED  NONVOLATILES
                                                       HALOGENATED  VOLATILES
                                                       NONHALOGENATED  NONVOLATILES
                                                       NONHALOGENATED  VOLATILES
                                                       ORGANIC  CORROSIVES
                                                       ORGANIC  CYANIDES
                                                       REDUCERS
                                     YES       NO
                                GROUNDWATER & ENVIRONMENTAL  SERVICE
                                                                      AQUEOUS  MEDIA
                                                                      SEDIMENTS
                                                                      SLUDGES
                                                                      SOILS
                                                                                       NOT  SPECIFIED
                                                                                                                           YES
                                                                                                                                      INP
                                HUNTER  SERVICES,  INC.
                                      AQUEOUS MEDIA
                                      ORGANIC LIQUID
DIOXINS/FURANS
HALOGENATED NONVOLATILES
HALOGENATED VOLATILES
INORGANIC CORROSIVES
NONHALOGENATED NONVOLATILES
NONHALOGENATED VOLATILES
NONVOLATILE METALS
ORGANIC CORROSIVES
ORGANIC CYANIDES
PCBs
PESTICIDES
VOLATILE METALS
                                                                                            YES       YES
                                HUNTER SERVICES,  INC.
                                      AQUEOUS MEDIA
                                      ORGANIC LIQUID
DIOXINS/FURANS
HALOGENATED NONVOLATILES
                                                                                            YES       YES

-------
TREATMENT TECHNOLOGY
                                                       TABLE # 2 (CONTINUED)

                                      COMPANY NAME                     MEDIA TREATED        CONTAMINANT  GROUPS
                                                                                            BENCH
                                                                                            SCALE
                                               PILOT
                                               SCALE
CHEMICAL OXIDATION
(continued)
HUNTER SERVICES,  INC.
(continued)
                                INTERNATIONAL PROCESS  RESEARCH CORP
                                                                     AQUEOUS ME IDA
                                                                     ORGANIC LIQUID
HALOGENATED VOLATILES
INORGANIC CORROSIVES
NONHALOGENATED NONVOLATILES
NONHALOGENATED VOLATILES
NONVOLATILE METALS
ORGANIC CORROSIVES
ORGANIC CYANIDES
PCBs
PESTICIDES
VOLATILE METALS

HALOGENATED NONVOLATILES
HALOGENATED VOLATILES
INORGANIC CORROSIVES
INORGANIC CYANIDES
NONHALOGENATED VOLATILES
NONVOLATILE METALS
ORGANIC CORROSIVES
ORGANIC CYANIDES
OXIDIZERS
REDUCERS
                                                                                                                           YES
                                                                                                                                     YES
                                IT  CORPORATION
                                                                     AQUEOUS MEDIA
                                                                     SOILS
                                                                     OTHER SOLIDS
                                                      HALOGENATED NONVOLATILES
                                                      HALOGENATED VOLATILES
                                                      INORGANIC CORROSIVES
                                                      INORGANIC CYANIDES
                                                      NONHALOGENATED NONVOLATILES
                                                      NONHALOGENATED VOLATILES
                                                      NONVOLATILE METALS
                                                      ORGANIC CYANIDES
                                                      OXIDIZERS
                                                      REDUCERS
                                                      VOLATILE METALS
                                                                                                                           YES
                                                                                                                                     YES
                                JACOBS ENGINEERING GROUP, INC.
                                                                     AQUEOUS MEDIA
                                                                                      HALOGENATED NONVOLATILES
                                                                                                                           YES
                                                                                                                                     NO

-------
TREATMENT TECHNOLOGY
                       TABLE  # 2  (CONTINUED)

      COMPANY NAME                     MEDIA TREATED        CONTAMINANT  GROUPS
                                                      BENCH     PILOT
                                                      SCALE     SCALE
CHEMICAL OXIDATION
(continued)
JACOBS ENGINEERING GROUP,  INC.
(continued)
ORGANIC LIQUID
HALOGENATED VOLATILES
NONHALOGENATED VOLATILES
ORGANIC CYANIDES
NONHALOGENATED NONVOLATILES
                                KEYSTONE ENVIRONMENTAL  RESOURCES
                                                                      AQUEOUS MEDIA
                                                       NONHALOGENATED  NONVOLATILES
                                                       NONVOLATILE  METALS
                                                                                                                            YES        NO
                                MAECORP,  INC.
                                      AQUEOUS MEDIA
                                      ORGANIC LIQUID
                 ORGANIC CYANIDES
                 INORGANIC CYANIDES
                                                                                                                            YES       YES
                                MCNAMEE ADVANCED  TECHNOLOGY,  INC.
                                      AQUEOUS MEDIA
                                      SLUDGES
                 HALOGENATED NONVOLATILES
                 ORGANIC CYANIDES
                 REDUCERS
                 INORGANIC CYANIDES
                 NONHALOGENATED VOLATILES
                                                                                                                            YES       YES
                                O'BRIEN AND  GERE  ENGINEERS,  INC.
                                      AQUEOUS MEDIA
                                      ORGANIC LIQUID
                 INORGANIC CORROSIVES
                 INORGANIC CYANIDES
                 NONHALOGENATED NONVOLATILES
                 ORGANIC CYANIDES
                 REDUCERS
                                                                                                                            YES       YES
                                OHM CORPORATION
                                      AQUEOUS MEDIA
                                      ORGANIC LIQUID
                                      SLUDGES
                                      SOILS
                                      OTHER SOLIDS
                 DIOXINS/FURANS
                 HALOGENATED NONVOLATILES
                 HALOGENATED VOLATILES
                 NONHALOGENATED VOLATILES
                 NONVOLATILE METALS
                 NONHALOGENATED NONVOLATILES
                 PCBS
                 PESTICIDES
                 VOLATILE METALS
                                                                                                                            YES       YES
                                RADIAN CORPORATION
                                      AQUEOUS MEDIA
                                      ORGANIC LIQUID
                 HALOGENATED NONVOLATILES
                 HALOGENATED VOLATILES
                                                                                                                            YES       YES

-------
TREATMENT TECHNOLOGY
                       TABLE # 2 (CONTINUED)

      COMPANY NAME                    MEDIA TREATED       CONTAMINANT GROUPS
                                                                                                                            BENCH
                                                                                                                            SCALE
                                                                                                      PILOT
                                                                                                      SCALE
CHEMICAL OXIDATION
(continued)
RADIAN CORPORATION
(continued)
NONHALOGENATED NONVOLATILES
NONHALOGENATED VOLATILES
NONVOLATILE METALS
ORGANIC CORROSIVES
ORGANIC CYANIDES
OXIDIZERS
PCBs
PESTICIDES
REDUCERS
VOLATILE METALS
                                RIVER OAK ASSOCIATES
                                                                      AQUEOUS MEDIA
                                                                      ORGANIC LIQUID
                                                       HALOGENATED  NONVOLATILES
                                                       HALOGENATED  VOLATILES
                                                       NONHALOGENATED  NONVOLATILES
                                                       NONHALOGENATED  VOLATILES
                                                                                                                            YES
                                RMT,  INC.
                                      AQUEOUS  MEDIA
                                      ORGANIC  LIQUID
NONHALOGENATED VOLATILES
NONHALOGENATED NONVOLATILES
HALOGENATED NONVOLATILES
NONVOLATILE METALS
REDUCERS
ORGANIC CYANIDES
INORGANIC CYANIDES
HALOGENATED VOLATILES
VOLATILE METALS
                                                                                            YES
                                                                                                      YES
                                RNK ENVIRONMENTAL,  INC.
                                     AQUEOUS MEDIA
                                     ORGANIC LIQUID
NONVOLATILE METALS
ORGANIC CORROSIVES
REDUCERS
NONHALOGENATED NONVOLATILES
OXIDIZERS
ORGANIC CYANIDES
YES
          YES
                                RODNEY  KINNEY  ASSOCIATES
                                                                     AQUEOUS MEDIA
                                                                     ORGANIC LIQUID
                                                      OXIDIZERS
                                                      PCBs
                                                                                                                            INP
                                                                                                                                      INP

-------
TREATMENT TECHNOLOGY
                                                       TABLE # 2 (CONTINUED)

                                      COMPANY NAME                    MEDIA TREATED
                                                          CONTAMINANT GROUPS
                                     BENCH
                                     SCALE
PILOT
SCALE
CHEMICAL OXIDATION
(continued)
RODNEY KINNEY ASSOCIATES
(continued)

ROY F. WESTON, INC.
                                                                      AQUEOUS MEDIA
                                                                      ORGANIC LIQUID
REDUCERS

PESTICIDES
DIOXINS/FURANS
NONVOLATILE METALS
INORGANIC CYANIDES
ORGANIC CYANIDES
INORGANIC CORROSIVES
ORGANIC CORROSIVES
HALOGENATED VOLATILES
HALOGENATED NONVOLATILES
NONHALOGENATED VOLATILES
NONHALOGENATED NONVOLATILES
PCBs
                                                                                                                            YES
                                                                                                                                      NO
                                VERSAR INC.
                                                                      AQUEOUS MEDIA
                                                       INORGANIC CYANIDES
                                                       NONHALOGENATED VOLATILES
                                                       VOLATILE METALS
                                                       INORGANIC CORROSIVES
                                                       NONHALOGENATED NONVOLATILES
                                                       NONVOLATILE METALS
                                                       REDUCERS
                                                                                                                            YES
                                                                                                                                      NO
                                WESTERN RESEARCH INSTITUTE
                                      AQUEOUS MEDIA
                                      ORGANIC LIQUID
                                      SLUDGES
 INORGANIC CYANIDES
 NONHALOGENATED VOLATILES
 NONVOLATILE METALS
 ORGANIC CYANIDES
                                                                                                                            INP
                                                                                                                                      INP
                                WOODWARD CLYDE CONSULTANTS
                                      SEDIMENTS
                                      SLUDGES
                                      SOILS
                                      OTHER SOLIDS
                                                                                       NOT SPECIFIED
                                                                                                                            YES
                                                                                                                                      YES
                                YEC INC
                                                                      NOT SPECIFIED
                                                                                       NOT SPECIFIED
                                                                                                                            YES
                                                                                                                                      YES

-------
TREATMENT TECHNOLOGY
                                      COMPANY NAME
TABLE # 2 (CONTINUED)

               MEDIA TREATED
                                                                                          CONTAMINANT GROUPS
                                                                                                                            BENCH
                                                                                                                            SCALE
                                                                               PILOT
                                                                               SCALE
CHEMICAL PRECIPITATION
                                AAA CSI
                                                                      AQUEOUS MEDIA
                                                                      ORGANIC LIQUID
                                HALOGENATED NONVOLATILES
                                HALOGENATED VOLATILES
                                INORGANIC CORROSIVES
                                NONHALOGENATED NONVOLATILES
                                NONHALOGENATED VOLATILES
                                NONVOLATILE METALS
                                ORGANIC CORROSIVES
                                OXIDIZERS
                                PCBs
                                PESTICIDES
                                REDUCERS
                                VOLATILE METALS
                                                                                                                            NO
                                                                                                                                      NO
                                AEA TECHNOLOGY
                                                                      AQUEOUS  MEDIA
                                                                      ORGANIC  LIQUID
                                                                      SEDIMENTS
                                                                      SLUDGES
                                                                      SOILS
                                                                                       RADIOACTIVE  MATERIALS
                                                                                                                            YES       YES
                                ANDCO ENVIRONMENTAL  PROCESSES,  INC.    AQUEOUS  MEDIA     NONVOLATILE  METALS
                                                                                       VOLATILE  METALS
                                                                                                                            YES        YES
                                APPLIED SURFACE  TECHNOLOGY
                                                                      AQUEOUS MEDIA     INORGANIC  CORROSIVES
                                                                      ORGANIC LIQUIDS   OXIDIZERS
                                                                      SLUDGES           HALOGENATED  NONVOLATILES
                                                                      SOILS             HALOGENATED  VOLATILES
                                                                                       NONVOLATILE  METALS
                                                                                       ORGANIC  CYAN IDES
                                                                                       INORGANIC  CYANIDES
                                                                                                                            YES        YES
                                C-E ENVIRONMENTAL,  INC.
              AQUEOUS MEDIA    NOT SPECIFIED
              ORGANIC LIQUID
                                                                    YES        YES
                                CHEMENCO,  INC.
                                                                     AQUEOUS MEDIA     NOT  SPECIFIED
                                                                    YES        NO

-------
                       TABLE # 2 (CONTINUED)
TREATMENT TECHNOLOGY
CHEMICAL PRECIPITATION
(continued)
COMPANY NAME
CHEMENCO, INC.
(continued)
MEDIA TREATED CONTAMINANT GROUPS
ORGANIC LIQUID
BENCH
SCALE

PILOT
SCALE

DETOX, INC.
AQUEOUS MEDIA
ORGANIC LIQUID
SEDIMENTS
SLUDGES
SOILS
HALOGENATED VOLATILES
HALOGENATED NONVOLATILES
NONHALOGENATED VOLATILES
NONHALOGENATED NONVOLATILES
PESTICIDES
DIOXINS/FURANS
ORGANIC CYANIDES
ORGANIC CORROSIVES
VOLATILE METALS
NONVOLATILE METALS
                                                                                           YES
                                                                                                     YES
DIVERSIFIED ENGINEERING,  INC.
AQUEOUS MEDIA
ORGANIC LIQUID
SEDIMENTS
SLUDGES
INORGANIC CORROSIVES
INORGANIC CYANIDES
NONVOLATILE METALS
ORGANIC CYANIDES
REDUCERS
HALOGENATED NONVOLATILES
NONHALOGENATED NONVOLATILES
ORGANIC CORROSIVES
OXIDIZERS
RADIOACTIVE MATERIALS
                                                                                            YES
                                                                                                      YES
E M & C ENGINEERING ASSOCIATES
AQUEOUS MEDIA
ORGANIC LIQUID
DIOXINS/FURANS
HALOGENATED NONVOLATILES
HALOGENATED VOLATILES
INORGANIC CORROSIVES
INORGANIC CYANIDES
NONVOLATILE METALS
ORGANIC CYANIDES
OXIDIZERS
PCBs
PESTICIDES
RUDUCERS
                                                                                            INP
                                                                                                      INP

-------
TREATMENT TECHNOLOGY
                       TABLE # 2 (CONTINUED)

      COMPANY NAME                    MEDIA TREATED       CONTAMINANT GROUPS
                                                                                                                            BENCH     PILOT
                                                                                                                            SCALE     SCALE
CHEMICAL PRECIPITATION
(continued)
E M & C ENGINEERING  ASSOCIATES
(continued)
VOLATILE METALS
                                EARTH TECHNOLOGY CORP.
                                                                      AQUEOUS MEDIA
                                                                      ORGANIC LIQUID
                                                                                       NOT SPECIFIED
                                                                                                                            YES       NO
                                ENSOTECH, INC.
                                      ORGANIC LIQUID
                                      AQUEOUS MEDIA
HALOGENATED NONVOLATILES
HALOGENATED VOLATILES
INORGANIC CORROSIVES
INORGANIC CYANIDES
NONHALOGENATED NONVOLATILES
NONHALOGENATED VOLATILES
NONVOLATILE METALS
OXIDIZERS
REDUCERS
                                                                                                                            YES       YES
                                ENVIRONMENTAL RESOURCE  ASSOCIATES
                                                                      AQUEOUS MEDIA
                                                       HALOGENATED  NONVOLATILES
                                                       HALOGENATED  VOLATILES
                                                       INORGANIC CORROSIVES
                                                       NONHALOGENATED  NONVOLATILES
                                                       NONHALOGENATED  VOLATILES
                                                       NONVOLATILE  METALS
                                                                                                                            YES       YES
                                ENVIRONMENTAL TECHNOLOGY  SOUTHEAST     AQUEOUS MEDIA
                                                      HALOGENATED NONVOLATILES
                                                      HALOGENATED VOLATILES
                                                      NONHALOGENATED  NONVOLATILES
                                                      NONHALOGENATED  VOLATILES
                                                      NONVOLATILE METALS
                                                                                                                            INP        INP
                                FNURIGHT ENVIRONMENTAL,  INC.
                                     AQUEOUS MEDIA
                                     ORGANIC LIQUID
                                                                                       RADIOACTIVE  MATERIALS
                                                                                                                            YES
                                                                                                                                      YES
                                GENERAL PHYSICS CORPORATION
                                                                      AQUEOUS  MEDIA
                                                                      ORGANIC  LIQUID
                                                      NONVOLATILE METALS
                                                      ORGANIC CORROSIVES
                                                      ORGANIC CYANIDES
                                                      VOLATILE METALS
                                                                                                                            YES        YES

-------
TREATMENT TECHNOLOGY
                 TABLE # Z (CONTINUED)

COMPANY NAME                    MEDIA TREATED
                                                                                          CONTAMINANT  GROUPS
                                     BENCH
                                     SCALE
PILOT
SCALE
CHEMICAL PRECIPITATION
(continued)
                                GROUNDUATER & ENVIRONMENTAL SERVICE
                                                                      AQUEOUS MEDIA
                                                                      SEDIMENTS
                                                                      SLUDGES
                                                                      SOILS
                                HARMON ENVIRONMENTAL SERVICES,  INC.    SLUDGES
                                HUNTER SERVICES,  INC.
                                AQUEOUS MEDIA
                                ORGANIC LIQUID
                                                                                       NOT SPECIFIED
                                                                                                                            YES
                                                                                                                                      INP
NOT SPECIFIED

DIOXINS/FURANS
HALOGENATED NONVOLATILES
HALOGENATED VOLATILES
INORGANIC CORROSIVES
NONHALOGENATED NONVOLATILES
NONHALOGENATED VOLATILES
NONVOLATILE METALS
ORGANIC CORROSIVES
ORGANIC CYANIDES
PCBs
PESTICIDES
VOLATILE METALS
                                                                                      YES

                                                                                      YES
YES

YES
                                HUNTER SERVICES,  INC.
                                AQUEOUS MEDIA
                                ORGANIC LIQUID
DIOXINS/FURANS
HALOGENATED NONVOLATILES
HALOGENATED VOLATILES
INORGANIC CORROSIVES
NONHALOGENATED NONVOLATILES
NONHALOGENATED VOLATILES
NONVOLATILE METALS
ORGANIC CORROSIVES
ORGANIC CYANIDES
PCBs
PESTICIDES
VOLATILE METALS
                                                                                                                            YES
                                                                                                                                      YES
                                INTERNATIONAL PROCESS RESEARCH CORP   AQUEOUS MEDIA
                                                                                       HALOGENATED NONVOLATILES
                                                                                                                            YES
                                                                                                                                      YES

-------
TREATMENT TECHNOLOGY
                                      COMPANY NAME
                       TABLE # 2 (CONTINUED)

                                      MEDIA TREATED
                                                                                          CONTAMINANT GROUPS
                                                                                                                            BENCH     PILOT
                                                                                                                            SCALE     SCALE
CHEMICAL PRECIPITATION
(continued)
INTERNATIONAL PROCESS RESEARCH CORP
(continued)
                                                                      ORGANIC LIQUID
                                                                                       HALOGENATED VOLATILES
                                                                                       INORGANIC CORROSIVES
                                                                                       INORGANIC CYANIDES
                                                                                       NONHALOGENATED VOLATILES
                                                                                       NONVOLATILE METALS
                                                                                       ORGANIC CORROSIVES
                                                                                       ORGANIC CYANIDES
                                                                                       OXIDIZERS
                                                                                       REDUCERS
                                IT CORPORATION
                                                                      AQUEOUS MEDIA
                                                                      SLUDGES
                                                                      SOILS
                                                       NONHALOGENATED  NONVOLATILES
                                                       NONVOLATILE  METALS
                                                       RADIOACTIVE  MATERIALS
                                                                                                                            YES       YES
                                JACOBS ENGINEERING GROUP,  INC.
                                     AQUEOUS MEDIA
                                     SLUDGES
NONVOLATILE METALS
VOLATILE METALS
                                                                                            YES       NO
                                KIBER ASSOCIATES,  INC.
                                     AQUEOUS MEDIA
                                     ORGANIC LIQUID
HALOGENATED NONVOLATILES
HALOGENATED VOLATILES
NONHALOGENATED NONVOLATILES
NONHALOGENATED VOLATILES
NONVOLATILE METALS
ORGANIC CORROSIVES
ORGANIC CYANIDES
OXIDIZERS
PCBs
VOLATILE METALS
                                                                                            YES       NO
                                MAECORP,  INC.
                                     AQUEOUS MEDIA    VOLATILE METALS
                                     ORGANIC LIQUID   NONVOLATILE METALS
                                     SOILS
                                     SEDIMENTS
                                                                                                                            YES       YES
                                MCNAMEE  ADVANCED  TECHNOLOGY,  INC.
                                                                      AQUEOUS  MEDIA     NONVOLATILE  METALS
                                                                                                                            YES       YES

-------
TREATMENT TECHNOLOGY
                       TABLE # 2 (CONTINUED)

      COMPANY NAME                    MEDIA TREATED
                                                                                          CONTAMINANT GROUPS
                                     BENCH     PILOT
                                     SCALE     SCALE
CHEMICAL PRECIPITATION
(continued)
OHM CORPORATION
                                      AQUEOUS  MEDIA
                                      SLUDGES
DIOXINS/FURANS
HALOGENATED NONVOLATILES
VOLATILE METALS
PESTICIDES
NONVOLATILE METALS
NONHALOGENATED NONVOLATILES
PCBs
                                                                                           YES       YES
                                PITTSBURGH  MIN&ENV.TECH.,  INC.
                                      AQUEOUS MEDIA
NONVOLATILE METALS
VOLATILE METALS
                                                                                                                           YES       YES
                                QUALTEC,  INC.
                                      AQUEOUS MEDIA
                                      SEDIMENTS
                                      SLUDGES
                                      SOILS
HALOGENATED VOLATILES
NONHALOGENATED NONVOLATILES
NONHALOGENATED VOLATILES
NONVOLATILE METALS
PCBs
                                                                                                                            INP        INP
                                RADIAN CORPORATION
                                      AQUEOUS MEDIA
                                      ORGANIC LIQUID
HALOGENATED NONVOLATILES
HALOGENATED VOLATILES
NONHALOGENATED NONVOLATILES
NONHALOGENATED VOLATILES
NONVOLATILE METALS
ORGANIC CORROSIVES
ORGANIC CYANIDES
OXIDIZERS
PCBs
PESTICIDES
REDUCERS
VOLATILE METALS
                                                                                                                            YES        YES
                                RIVER OAK  ASSOCIATES
                                      AQUEOUS MEDIA
                                      ORGANIC LIQUID
HALOGENATED NONVOLATILES
HALOGENATED VOLATILES
NONHALOGENATED NONVOLATILES
NONHALOGENATED VOLATILES
                                                                                                                            YES
                                                                                                                                      NO

-------
TREATMENT TECHNOLOGY
                       TABLE # 2 (CONTINUED)

      COMPANY NAME                    MEDIA TREATED        CONTAMINANT  GROUPS
                                                                                                                            BENCH
                                                                                                                            SCALE
                                                                                                      PILOT
                                                                                                      SCALE
CHEMICAL PRECIPITATION
(continued)
RMT, INC.
                                                                      AQUEOUS  MEDIA
                                                                      ORGANIC  LIQUID
                                                                      SLUDGES
                                                       VOLATILE METALS
                                                       INORGANIC  CORROSIVES
                                                       NONHALOGENATED NONVOLATILES
                                                       NONVOLATILE METALS
                                                       OXIDIZERS
                                                       REDUCERS
                                                                                                                           YES
                                               YES
                                RNK ENVIRONMENTAL,  INC.
                                RODNEY KINNEY  ASSOCIATES
                                      AQUEOUS  MEDIA
                                      ORGANIC  LIQUID
VOLATILE METALS
NONVOLATILE METALS
                                                                      AQUEOUS MEDIA    OXIDIZERS
                                                                      ORGANIC LIQUID   PCBs
                                                                                      REDUCERS
                                     YES       YES
                                                                                                                            INP       INP
                                ROY  F.  WESTON,  INC.
                                TREATEK,  INC.
                                     AQUEOUS MEDIA
                                     ORGANIC LIQUID
                                     AQUEOUS MEDIA
                                     SEDIMENTS
                                     SLUDGES
                                     SOILS
PESTICIDES
DIOXINS/FURANS
HALOGENATED VOLATILES
INORGANIC CYANIDES
ORGANIC CYANIDES
INORGANIC CORROSIVES
ORGANIC CORROSIVES
HALOGENATED VOLATILES
HALOGENATED NONVOLATILES
NONHALOGENATED VOLATILES
NONHALOGENATED NONVOLATILES
PCBS

HALOGENATED NONVOLATILES
HALOGENATED VOLATILES
NONHALOGENATED NONVOLATILES
NONHALOGENATED VOLATILES
NONVOLATILE METALS
PCBs
PESTICIDES
                                                                                           YES       YES
                                     YES       YES

-------
 TREATMENT  TECHNOLOGY
                       TABLE # 2 (CONTINUED)

      COMPANY NAME                    MEDIA TREATED       CONTAMINANT GROUPS
                                                                                                                            BENCH
                                                                                                                            SCALE
PILOT
SCALE
CHEMICAL  PRECIPITATION
(continued)
VERSAR INC.
                                WESTERN RESEARCH INSTITUTE
                                WOODWARD CLYDE CONSULTANTS
                                YEC INC
                                ZENON ENVIRONMENTAL
                                                                      AQUEOUS MEDIA
                                                                      AQUEOUS MEDIA
                                                                      ORGANIC LIQUID
                                                                      SLUDGES
                                                       INORGANIC CORROSIVES
                                                       INORGANIC CYANIDES
                                                       NONVOLATILE  METALS
                                                       VOLATILE METALS

                                                       INORGANIC CYANIDES
                                                       NONHALOGENATED NONVOLATILES
                                                       NONVOLATILE  METALS
                                                       ORGANIC CYANIDES
                                                       RADIOACTIVE  MATERIALS
                                                                                            YES
                                                                                                      YES
                                                                                                                            YES       NO
                                                                      AQUEOUS MEDIA    NOT SPECIFIED
                                                                      ORGANIC LIQUID

                                                                      NOT SPECIFIED    NOT SPECIFIED
                                                                      AQUEOUS MEDIA
                                                                      ORGANIC LIQUID
                                ZIMPRO PASSAVANT
                                                                      AQUEOUS MEDIA
                                                       HALOGENATED NONVOLATILES
                                                       HALOGENATED VOLATILES
                                                       NONHALOGENATED VOLATILES
                                                       ORGANIC CORROSIVES
                                                       NONHALOGENATED NONVOLATILES
                                                       ORGANIC CYANIDES
                                                       PCBs
                                                       PESTICIDES

                                                       NONVOLATILE METALS
                                                                                            YES       YES


                                                                                            YES       YES

                                                                                            YES       YES
                                                                                                                            YES       YES
CHEMICAL REDUCTION
                                AAA CSI
                                                                      AQUEOUS MEDIA
                                                                      ORGANIC LIQUID
                                                       HALOGENATED NONVOLATILES
                                                       HALOGENATED VOLATILES
                                                       INORGANIC CORROSIVES
                                                       NONHALOGENATED NONVOLATILES
                                                       NONHALOGENATED VOLATILES
                                                       NONVOLATILE METALS
                                                       ORGANIC CORROSIVES
                                                                                                                            NO        NO

-------
            TREATMENT TECHNOLOGY
                       TABLE # 2 (CONTINUED)

      COMPANY NAME                    MEDIA TREATED       CONTAMINANT GROUPS
                                                                                                                                        BENCH
                                                                                                                                        SCALE
                                                                                                      PILOT
                                                                                                      SCALE
            CHEMICAL REDUCTION
            (continued)
AAA CSI
(continued)
                                                                                                   OXIDIZERS
                                                                                                   PCBs
                                                                                                   PESTICIDES
                                                                                                   REDUCERS
                                                                                                   VOLATILE METALS
                                            DETOX,  INC.
o
CO
                                      AQUEOUS MEDIA
                                      ORGANIC LIQUID
                                      SEDIMENTS
                                      SLUDGES
                                      SOILS
                                           DIVERSIFIED ENGINEERING, INC.
                                     ORGANIC  LIQUID
HALOGENATED VOLATILES
HALOGENATED NONVOLATILES
NONHALOGENATED VOLATILES
NONHALOGENATED NONVOLATILES
PESTICIDES
DIOXINS/FURANS
ORGANIC CYANIDES
ORGANIC CORROSIVES
VOLATILE METALS
NONVOLATILE METALS

INORGANIC CORROSIVES
NONVOLATILE METALS
ORGANIC CORROSIVES
HALOGENATED NONVOLATILES
NONHALOGENATED NONVOLATILES
REDUCERS
YES
          YES
                                                                                            YES
                                                                                                      YES
                                           E M & C ENGINEERING ASSOCIATES
                                                                                 AQUEOUS MEDIA
                                                                                 ORGANIC LIQUID
                                                      DIOXINS/FURANS
                                                      HALOGENATED NONVOLATILES
                                                      HALOGENATED VOLATILES
                                                      INORGANIC CORROSIVES
                                                      INORGANIC CYANIDES
                                                      NONVOLATILE METALS
                                                      ORGANIC CYANIDES
                                                      OXIDIZERS
                                                      PCBs
                                                      PESTICIDES
                                                      REDUCERS
                                     INP
                                               INP

-------
            TREATMENT TECHNOLOGY
                       TABLE # 2 (CONTINUED)

      COMPANY NAME                    MEDIA TREATED        CONTAMINANT  GROUPS
                                                                                                                                       BENCH
                                                                                                                                       SCALE
                                                                                                      PILOT
                                                                                                      SCALE
            CHEMICAL REDUCTION
            (continued)
E M & C ENGINEERING ASSOCIATES
(continued)
                                                                                                  VOLATILE METALS
                                            ENSOTECH,  INC.
                                      ORGANIC LIQUID
                                      AQUEOUS MEDIA
HALOGENATED NONVOLATILES
HALOGENATED VOLATILES
INORGANIC CORROSIVES
INORGANIC CYANIDES
NONHALOGENATED NONVOLATILES
NONHALOGENATED VOLATILES
NONVOLATILE METALS
OXIDIZERS
REDUCERS
                                                                                                                                       YES
                                                                                                                                                 YES
                                            ENVIRONMENTAL RESOURCE ASSOCIATES
o

-------
TREATMENT TECHNOLOGY
                 TABLE # 2 (CONTINUED)

COMPANY NAME                    MEDIA TREATED       CONTAMINANT  GROUPS
                                                                                                                            BENCH
                                                                                                                            SCALE
                                                                                                PILOT
                                                                                                SCALE
CHEMICAL REDUCTION
(continued)
                                INTERNATIONAL PROCESS RESEARCH  CORP
                                                                      AQUEOUS MEDIA
                                                                      ORGANIC LIQUID
                                                 HALOGENATED  NONVOLATILES
                                                 HALOGENATED  VOLATILES
                                                 INORGANIC CORROSIVES
                                                 INORGANIC CYANIDES
                                                 NONHALOGENATED VOLATILES
                                                 NONVOLATILE  METALS
                                                 ORGANIC CORROSIVES
                                                 ORGANIC CYANIDES
                                                 OXIDIZERS
                                                 REDUCERS
                                     YES
                                               YES
                                IT CORPORATION
                                                                     AQUEOUS MEDIA
                                                                     ORGANIC LIQUID
                                                HALOGENATED VOLATILES
                                                NONHALOGENATED NONVOLATILES
                                                NONVOLATILE METALS
                                                PESTICIDES
                                     YES       YES
                                MAECORP,  INC.
                               AQUEOUS MEDIA
                               ORGANIC LIQUID
NOT SPECIFIED
                                                                                                                           YES
                                                                                                                                     YES
                               MCNAMEE ADVANCED TECHNOLOGY, INC.
                               O'BRIEN AND GERE ENGINEERS, INC.
                               AQUEOUS MEDIA
                                                NONVOLATILE METALS
                                                OXIDIZERS
                               AQUEOUS MEDIA    INORGANIC CORROSIVES
                               ORGANIC LIQUID   OXIDIZERS
                                                                                                                           YES
                                                                                                                           YES
                                                                                                                                     YES
                                                                                                                                     YES
                               OHM CORPORATION
                                                                     AQUEOUS MEDIA
                                                                     OTHER SOLIDS
                                                                     SLUDGES
                                                                     SOILS
                                                NONVOLATILE METALS
                                                VOLATILE METALS
                                     YES
                                               YES
                               RIVER OAK ASSOCIATES
                                                                     AQUEOUS MEDIA
                                                                     ORGANIC LIQUID
                                                HALOGENATED NONVOLATILES
                                                HALOGENATED VOLATILES
                                                NONHALOGENATED NONVOLATILES
                                                NONHALOGENATED VOLATILES
                                     YES       NO

-------
TREATMENT TECHNOLOGY
                 TABLE # 2 (CONTINUED)

COMPANY NAME                    MEDIA TREATED       CONTAMINANT  GROUPS
                                     BENCH
                                     SCALE
PILOT
SCALE
CHEMICAL REDUCTION
(continued)
                                RMT, INC.
                                AQUEOUS MEDIA
                                ORGANIC LIQUID
                                SOILS
                                SLUDGES
                                SEDIMENTS
NONVOLATILE METALS
INORGANIC CYANIDES
OXIDIZERS
                                                                                                                            YES
                                                                                                                                      YES
                                RNK ENVIRONMENTAL,  INC.
                                AQUEOUS MEDIA
                                ORGANIC LIQUID
ORGANIC CORROSIVES
REDUCERS
OXIDIZERS
NONVOLATILE METALS
NONHALOGENATED NONVOLATILES
                                                                                                                            YES       YES
                                RODNEY KINNEY  ASSOCIATES
                                                                      AQUEOUS MEDIA    OXIDIZERS
                                                                      ORGANIC LIQUID   PCBs
                                                                                       REDUCERS
                                                                                                                            INP       INP
                                ROY F.  WESTON,  INC.
                                AQUEOUS MEDIA
                                ORGANIC LIQUID
PESTICIDES
DIOXINS/FURANS
NONVOLATILE METALS
INORGANIC CYANIDES
ORGANIC CYANIDES
INORGANIC CORROSIVES
ORGANIC CORROSIVES
HALOGENATED VOLATILES
HALOGENATED NONVOLATILES
NONHALOGENATED VOLATILES
NONHALOGENATED NONVOLATILES
PCBs
                                                                                                                            YES       YES
                                WESTERN RESEARCH  INSTITUTE
                                                                      AQUEOUS MEDIA
                                                                      ORGANIC LIQUID
                                                                      SLUDGES
                                                 INORGANIC CYANIDES
                                                 NONHALOGENATED NONVOLATILES
                                                 NONVOLATILE METALS
                                                 ORGANIC CYANIDES
                                                 RADIOACTIVE MATERIALS
                                                                                                                            YES       NO

-------
 TREATMENT TECHNOLOGY
                 TABLE # 2 (CONTINUED)

COMPANY NAME                    MEDIA TREATED       CONTAMINANT GROUPS
                                                                                                                            BENCH     PILOT
                                                                                                                            SCALE     SCALE
CHEMICAL REDUCTION
(continued)
                                WOODWARD CLYDE CONSULTANTS
                                ZENON ENVIRONMENTAL
                                AQUEOUS MEDIA
                                ORGANIC LIQUID

                                AQUEOUS MEDIA
                                ORGANIC LIQUID
                                                                                       NOT SPECIFIED
                                                                                       OXIDIZERS
                                                                                       NONHALOGENATED VOLATILES
                                                                                       PESTICIDES
                                                                                       REDUCERS
                                                                                       HALOGENATED NONVOLATILES
                                                                                       HALOGENATED VOLATILES
                                                                                       NONHALOGENATED NONVOLATILES
                                                                                                                            YES       YES
                                     YES       YES
CHEMICAL TREATMENT
                                AAA CSI
                                AEA TECHNOLOGY
                                APPLIED  SURFACE  TECHNOLOGY
                                                                      SEDIMENTS
                                                                      SLUDGES
                                                                      SOILS
                               AQUEOUS MEDIA
                               ORGANIC LIQUID
                               SEDIMENTS
                               SLUDGES
                               SOILS

                               AQUEOUS MEDIA
                               ORGANIC LIQUIDS
                               SLUDGES
HALOGENATED NONVOLATILES
HALOGENATED VOLATILES
INORGANIC CORROSIVES
NONHALOGENATED NONVOLATILES
NONHALOGENATED VOLATILES
NONVOLATILE METALS
ORGANIC CORROSIVES
OXIDIZERS
PCBs
PESTICIDES
REDUCERS
VOLATILE METALS

RADIOACTIVE MATERIALS
                                                                                     NO
                                                                                                NO
                                                                                       INORGANIC  CORROSIVES
                                                                                       OXIDIZERS
                                                                                       HALOGENATED  NONVOLATILES
                                                                                                                            YES
                                                                                                                                      YES
                                     YES
                                               YES

-------
TREATMENT TECHNOLOGY
                       TABLE # 2 (CONTINUED)

      COMPANY NAME                    MEDIA TREATED        CONTAMINANT  GROUPS
                                                      BENCH
                                                      SCALE
                                               PILOT
                                               SCALE
CHEMICAL TREATMENT
(continued)
APPLIED SURFACE TECHNOLOGY
(continued)
                                CHEMENCO,  INC.
                                DETOX,  INC.
                                E M & C ENGINEERING ASSOCIATES
SOILS
                                      SEDIMENTS
                                      SLUDGES
                                      SOILS
                                      OTHER SOLIDS

                                      AQUEOUS MEDIA
                                      ORGANIC LIQUID
                                      SEDIMENTS
                                      SLUDGES
                                      SOILS
                                                                      SLUDGES
                                                                      OTHER  SOLIDS
                                                                      SOILS
HALOGENATED VOLATILES
NONVOLATILE METALS
ORGANIC CYANIDES
INORGANIC CYANIDES

NOT SPECIFIED
                                                                                                                           YES
                                                                                                                                     NO
                 HALOGENATED VOLATILES
                 HALOGENATED NONVOLATILES
                 NONHALOGENATED VOLATILES
                 NONHALOGENATED NONVOLATILES
                 PESTICIDES
                 DIOXINS/FURANS
                 ORGANIC CYANIDES
                 ORGANIC CORROSIVES
                 VOLATILE METALS
                 NONVOLATILE METALS

                 DIOXINS/FURANS
                 HALOGENATED NONVOLATILES
                 HALOGENATED VOLATILES
                 INORGANIC CORROSIVES
                 INORGANIC CYANIDES
                 NONVOLATILE METALS
                 ORGANIC CYANIDES
                 OXIDIZERS
                 PCBs
                 PESTICIDES
                 REDUCERS
                 VOLATILE METALS
                                                                                                                           YES
                                                                                                                                     YES
                                                                                                                            INP
                                                                                                                                      INP
                                EARTH TECHNOLOGY  CORP.
                                                                      OTHER  SOLIDS
                                                                                       NOT  SPECIFIED
                                                                                                                            YES
                                                                                                                                      NO

-------
TREATMENT TECHNOLOGY
                       TABLE # 2 (CONTINUED)

      COMPANY NAME                    MEDIA TREATED       CONTAMINANT GROUPS
                                                                                                                            BENCH     PILOT
                                                                                                                            SCALE     SCALE
CHEMICAL TREATMENT
(continued)
EARTH TECHNOLOGY CORP.
(continued)
                                                                      SEDIMENTS
                                                                      SLUDGES
                                                                      SOILS
                                ENSOTECH,  INC.
                                ENVIRONMENTAL REMEDIATION,  INC.
                                      OTHER  SOLIDS
                                      SEDIMENTS
                                      SLUDGES
                                      SOILS
                                     AQUEOUS MEDIA
                                     ORGANIC LIQUID
                                     SEDIMENTS
                                     SLUDGES
                                     SOILS
HALOGENATED NONVOLATILES
HALOGENATED VOLATILES
INORGANIC CORROSIVES
INORGANIC CYANIDES
NONHALOGENATED NONVOLATILES
NONHALOGENATED VOLATILES
NONVOLATILE METALS
OXIDIZERS
REDUCERS

HALOGENATED VOLATILES
NONHALOGENATED VOLATILES
PCBs
PESTICIDES
                                                                                                                            YES       YES
YES       YES
                               ENVIROTECH MID-ATLANTIC
                                                                     SEDIMENTS        HALOGENATED NONVOLATILES
                                                                     SLUDGES          HALOGENATED VOLATILES
                                                                     SOILS            NONHALOGENATED NONVOLATILES
                                                                                      NONHALOGENATED VOLATILES
                                                                                      NONVOLATILE METALS
                                                                                           YES       YES
                               FORMULA ENVIRONMENTAL COMPANY
                                                                     AQUEOUS MEDIA    NOT SPECIFIED
                                                                     ORGANIC LIQUIDS
                                                                                           YES       NO
                               GENERAL PHYSICS CORPORATION
                                                                     AQUEOUS MEDIA
                                                                     ORGANIC LIQUID
                                                                     SOILS
                                                      NONVOLATILE METALS
                                                      ORGANIC CORROSIVES
                                                      ORGANIC CYANIDES
                                                      VOLATILE METALS
                                     YES       YES
                               HARMON ENVIRONMENTAL SERVICES,  INC.    AQUEOUS MEDIA    NOT SPECIFIED
                                                                                                                           YES       YES

-------
TREATMENT TECHNOLOGY
                                                      TABLE # 2 (CONTINUED)

                                     COMPANY NAME                    MEDIA TREATED
                    CONTAMINANT GROUPS
                                     BENCH
                                     SCALE
PILOT
SCALE
CHEMICAL TREATMENT
(continued)
                                I IT RESEARCH INST
                                IT  CORPORATION
                                MAECORP,  INC.
SLUDGES
OTHER SOLIDS
SOILS
                                INTERNATIONAL PROCESS RESEARCH CORP   SOILS
                                                                     ORGANIC LIQUID
SEDIMENTS
SLUDGES
SOILS
AQUEOUS MEDIA
DIOX1NS/FURANS
HALOGENATED NONVOLATILES
HALOGENATED VOLATILES
PESTICIDES
NONVOLATILE METALS
NONHALOGENATED NONVOLATILES
PCBs

HALOGENATED NONVOLATILES
HALOGENATED VOLATILES
INORGANIC CORROSIVES
INORGANIC CYANIDES
NONHALOGENATED VOLATILES
NONVOLATILE METALS
ORGANIC CORROSIVES
ORGANIC CYANIDES
OXIDIZERS
REDUCERS

PCBS
DIOXINS/FURANS

VOLATILE METALS
NONVOLATILE METALS
RADIOACTIVE MATERIAS
ORGANIC CYANIDES
INORGANIC CYANIDES
                                                                                                                           INP
                                                                                                                                     YES
                                                                                                                           YES       YES
                                                                                                                           YES       YES
                                                                                                                           YES       YES
                                MCNAMEE ADVANCED TECHNOLOGY,  INC.
SLUDGES
SOILS
 HALOGENATED NONVOLATILES
 HALOGENATED VOLATILES
 REDUCERS
 INORGANIC  CYANIDES
 NONHALOGENATED  NONVOLATILES
 NONHALOGENATED  VOLATILES
                                                                                                                           YES       YES

-------
TREATMENT TECHNOLOGY
                       TABLE # 2 (CONTINUED)

      COMPANY NAME                    MEDIA TREATED       CONTAMINANT GROUPS
                                                                                                                            BENCH
                                                                                                                            SCALE
                                                PILOT
                                                SCALE
CHEMICAL TREATMENT
(continued)
MCNAMEE ADVANCED TECHNOLOGY,  INC.
(continued)
NONVOLATILE METALS
ORGANIC CORROSIVES
ORGANIC CYANIDES
OXIDIZERS
                                OHM CORPORATION
                                                                      SOILS
                                                                      ORGANIC  LIQUID
                                                                      OTHER SOLIDS
                                                                      SLUDGES
                                                       DIOXINS/FURANS
                                                       HALOGENATED  NONVOLATILES
                                                       HALOGENATED  VOLATILES
                                                       NONHALOGENATED VOLATILES
                                                       NONVOLATILE  METALS
                                                       NONHALOGENATED NONVOLATILES
                                                       PCBs
                                                       PESTICIDES
                                                       VOLATILE METALS
                                                                                                                            YES
                                                                                                                                      YES
                                RMC ENV &  ANALYTICAL LABORATORIES
                                                                     SEDIMENTS        DIOXINS/FURANS
                                                                     SLUDGES          HALOGENATED NONVOLATILES
                                                                     SOILS            HALOGENATED VOLATILES
                                                                                      NONHALOGENATED NONVOLATILES
                                                                                      NONHALOGENATED VOLATILES
                                                                                      ORGANIC CORROSIVES
                                                                                      ORGANIC CYANIDES
                                                                                      PCBs
                                                                                      PESTICIDES
                                                                                      NONVOLATILE METALS
                                                                                                                           YES
                                                                                                                                     YES
                                RMT,  INC.
                                     SEDIMENTS
                                     SLUDGES
                                     SOILS
                                     ORGANIC LIQUID
                                     AQUEOUS MEDIA
HALOGENTED NONVOLATILES
HALOGENATED VOLATILES
INORGANIC CORROSIVES
INORGANIC CYANIDES
NONHALOGENATED NONVOLATILES
NONHALOGENATED VOLATILES
NONVOLATILE METALS
ORGANIC CORROSIVES
ORGANIC CYANIDES
                                                                                            YES
                                                                                                     YES

-------
                                                      TABLE # 2  (CONTINUED)
TREATMENT TECHNOLOGY
CHEMICAL TREATMENT
(continued)
COMPANY NAME
RMT. INC.
(continued)
MEDIA TREATED CONTAMINANT GROUPS
OXIDIZERS
PCBs
PESTICIDES
BENCH PILOT
SCALE SCALE

                                ROY F.  WESTON,  INC.
                                WASTE STREAM  TECHNOLOGY,  INC.

                                YEC INC
SEDIMENTS        PESTICIDES
SLUDGES          DIOXINS/FURANS
SOILS            NONVOLATILE METALS
                 INORGANIC CYANIDES
                 INORGANIC CORROSIVES
                 ORGANIC CYANIDES
                 ORGANIC CORROSIVES
                 HALOGENATED NONVOLATILES
                 HALOGENATED VOLATILES
                 NONHALOGENATED NONVOLATILES
                 NONHALOGENATED VOLATILES
                 PCBs

AQUEOUS MEDIA    NONVOLATILE METALS

NOT SPECIFIED    NOT SPECIFIED
                                                                                                                            YES
                                                                                                                                     NO
                                     YES       NO

                                     YES       YES
CHLORINATION
                                APPLIED  SURFACE  TECHNOLOGY
                                DETOX,  INC.
AQUEOUS MEDIA
ORGANIC LIQUIDS
SLUDGES
SOILS
AQUEOUS MEDIA
ORGANIC LIQUID
SEDIMENTS
SLUDGES
SOILS
INORGANIC CORROSIVES
OXIDIZERS
HALOGENATED NONVOLATILES
HALOGENATED VOLATILES
NONVOLATILE METALS
ORGANIC CYANIDES
INORGANIC CYANIDES

HALOGENATED VOLATILES
HALOGENATED NONVOLATILES
NONHALOGENATED VOLATILES
NONHALOGENATED NONVOLATILES
PESTICIDES
                                                                                                                            YES       YES
                                                                                                                            YES       YES

-------
TREATMENT TECHNOLOGY
                                                       TABLE # 2  (CONTINUED)

                                      COMPANY  NAME                    MEDIA TREATED       CONTAMINANT GROUPS
                                                                                            BENCH      PILOT
                                                                                            SCALE      SCALE
CHLORINATION
(continued)
DETOX,  INC.
(continued)
DIOXINS/FURANS
ORGANIC CYANIDES
ORGANIC CORROSIVES
VOLATILE METALS
NONVOLATILE METALS
                                DIVERSIFIED ENGINEERING,  INC.
                                E  M & C ENGINEERING ASSOCIATES
                                     AQUEOUS MEDIA
                                     ORGANIC LIQUID
                                                                     AQUEOUS MEDIA
                                                                     ORGANIC LIQUID
NONHALOGENATED NONVOLATILES
OXIDIZERS
NONHALOGENATED VOLATILES

DIOXINS/FURANS
HALOGENATED NONVOLATILES
HALOGENATED VOLATILES
INORGANIC CORROSIVES
INORGANIC CYANIDES
NONVOLATILE METALS
ORGANIC CYANIDES
OXIDIZERS
PCBs
PESTICIDES
REDUCERS
VOLATILE METALS
                                                                                                                           YES       YES
                                                                                                                           IMP       INP
                                EARTH TECHNOLOGY CORP.
                                ENSOTECH, INC.
                                     AQUEOUS MEDIA
                                     ORGANIC LIQUID

                                     ORGANIC LIQUID
                                     AQUEOUS MEDIA
                                                                                      NOT SPECIFIED
HALOGENATED NONVOLATILES
HALOGENATED VOLATILES
INORGANIC CORROSIVES
INORGANIC CYANIDES
NONHALOGENATED NONVOLATILES
NONHALOGENATED VOLATILES
NONVOLATILE METALS
OXIDIZERS
REDUCERS
                                                                                                                           YES       NO
                                                                                                                           YES       YES

-------
TREATMENT TECHNOLOGY
                 TABLE # 2 (CONTINUED)

COMPANY NAME                    MEDIA TREATED       CONTAMINANT GROUPS
                                                                                                                           BENCH
                                                                                                                           SCALE
                                               PILOT
                                               SCALE
CHLORINATION
(continued)
                                ENVIRONMENTAL TECHNOLOGY SOUTHEAST    AQUEOUS MEDIA
                                                                                      HALOGENATED NONVOLATILES
                                                                                      HALOGENATED VOLATILES
                                                                                      NONHALOGENATED NONVOLATILES
                                                                                      NONHALOGENATED VOLATILES
                                                                                      NONVOLATILE METALS
                                                                                                                           INP
                                                                                                                                     INP
                                GENERAL PHYSICS CORPORATION
                                                                     AQUEOUS MEDIA
                                                                     ORGANIC LIQUID
                                                 NOT  SPECIFIED
                                                                                      YES        NO
                                HUNTER SERVICES. INC.
                                AQUEOUS MEDIA
                                ORGANIC LIQUID
NONHALOGENATED NONVOLATILES
NONHALOGENATED VOLATILES
OXIDIZERS
REDUCERS
                                                                                                                           YES       YES
                                INTERNATIONAL PROCESS RESEARCH CORP
                                                                     AQUEOUS MEDIA
                                                                     ORGANIC LIQUID
                                                 HALOGENATED NONVOLATILES
                                                 HALOGENATED VOLATILES
                                                 INORGANIC CORROSIVES
                                                 INORGANIC CYANIDES
                                                 NONHALOGENATED VOLATILES
                                                 NONVOLATILE METALS
                                                 ORGANIC CORROSIVES
                                                 ORGAINC CYANIDES
                                                 OXIDIZERS
                                                 REDUCERS
                                                                                      YES       YES
                                IT CORPORATION
                                                                     AQUEOUS MEDIA
                                                                     OTHER SOLIDS
                                                 NONHALOGENATED NONVOLATILES
                                                 ORGANIC CYANIDES
                                                 INORGANIC CYANIDES
                                                                                                                           YES       YES
                               MAECORP, INC.
                                AQUEOUS MEDIA    NOT SPECIFIED
                                ORGANIC LIQUID
                                                                                      YES       YES
                               MCNAMEE ADVANCED TECHNOLOGY.  INC.
                                                                     AQUEOUS MEDIA
                                                 HALOGENATED NONVOLATILES
                                                 HALOGENATED VOLATILES
                                                                                                                           YES       YES

-------
TREATMENT TECHNOLOGY
                       TABLE  # 2 (CONTINUED)

      COMPANY NAME                     MEDIA TREATED       CONTAMINANT  GROUPS
                                     BENCH
                                     SCALE
PILOT
SCALE
CHLORINATION
(continued)
MCNAMEE ADVANCED  TECHNOLOGY,  INC.
(continued)
REDUCERS
INORGANIC CYANIDES
NONHALOGENATED NONVOLATILES
NONHALOGENATED VOLATILES
ORGANIC CYANIDES
                                O'BRIEN AND  GERE ENGINEERS, INC.
                                     AQUEOUS  MEDIA
                                     ORGANIC  LIQUID
INORGANIC CORROSIVES
INORGANIC CYANIDES
NONHALOGENATED NONVOLATILES
ORGANIC CYANIDES
REDUCERS
                                                                                                                           YES
                                                                                                                                     YES
                                OHM CORPORATION
                                                                     AQUEOUS MEDIA
                                                                     SLUDGES
                                                      NONHALOGENATED NONVOLATILES
                                                      HALOGENATED NONVOLATILES
                                                      HALOGENATED VOLATILES
                                                      NONHALOGENATED VOLATILES
                                                      NONVOLATILE METALS
                                                                                                                           YES
                                                                                                                                     YES
                                RADIAN  CORPORATION
                                                                     AQUEOUS MEDIA
                                                                     ORGANIC LIQUID
                                                      HALOGENATED NONVOLATILES
                                                      HALOGENATED VOLATILES
                                                      NONHALOGENATED NONVOLATILES
                                                      NONHALOGENATED VOLATILES
                                                      NONVOLATILE METALS
                                                      ORGANIC CORROSIVES
                                                      ORGANIC CYANIDES
                                                      OXIDIZERS
                                                      PCBS
                                                      PESTICIDES
                                                      REDUCERS
                                                      VOLATILE METALS
                                                                                                                           YES
                                                                                                                                     YES
                                RIVER OAK ASSOCIATES
                                                                     AQUEOUS MEDIA
                                                                     ORGANIC LIQUID
                                                      INORGANIC CORROSIVES
                                                      INORGANIC CYANIDES
                                                      NONVOLATILE METALS
                                                      OXIDIZERS
                                                                                                                           YES
                                                                                                                                     NO

-------
TREATMENT TECHNOLOGY
                       TABLE # 2 (CONTINUED)

      COMPANY NAME                    MEDIA TREATED       CONTAMINANT GROUPS
                                     BENCH     PILOT
                                     SCALE     SCALE
CHLORINATION
(continued)
RIVER OAK ASSOCIATES
(continued)
RADIOACTIVE MATERIALS
REDUCERS
VOLATILE METALS
                                RMT,  INC.
                                      AQUEOUS MEDIA
                                      ORGANIC LIQUID
NONHALOGENATED NONVOLATILES
REDUCERS
INORGANIC CYANIDES
ORGANIC CYANIDES
                                                                                                                            YES
                                                                                                                                      YES
                                RNK ENVIRONMENTAL,  INC.
                                      AQUEOUS MEDIA
                                      ORGANIC LIQUID
ORGANIC CYANIDES
ORGANIC CORROSIVES
NONHALOGENATED NONVOLATILES
NONHALOGENATED VOLATILES
                                                                                                                            YES
                                                                                                                                      NO
                                RODNEY KINNEY  ASSOCIATES
                                      AQUEOUS MEDIA    OXIDIZERS
                                      ORGANIC LIQUID   PCBs
                                                       REDUCERS
                                                                                                                            INP
                                                                                                                                      INP
                                ROY F.  WESTON.  INC.
                                      AQUEOUS MEDIA
                                      ORGANIC LIQUID
PESTICIDES
DIOXINS/FURANS
NONVOLATILE METALS
INORGANIC CYANIDES
ORGANIC CYANIDES
INORGANIC CORROSIVES
ORGANIC CORROSIVES
HALOGENATED VOLATILES
HALOGENATED NONVOLATILES
NONHALOGENATED VOLATILES
NONHALOGENATED NONVOLATILES
PCBs
                                                                                                                            YES
                                                                                                                                      NO
                                WESTERN  RESEARCH  INSTITUTE
                                                                      AQUEOUS MEDIA
                                                                      ORGANIC LIQUID
                                                       INORGANIC CYANIDES
                                                       NONHALOGENATED NONVOLATILES
                                                                                                                            INP       INP
                                YEC  INC
                                                                      NOT SPECIFIED    NOT SPECIFIED
                                                                                                                            YES       YES

-------
TREATMENT TECHNOLOGY
                                                       TABLE # 2 (CONTINUED)

                                      COMPANY NAME                    MEDIA TREATED       CONTAMINANT GROUPS
                                                                                            BENCH
                                                                                            SCALE
                                                                PILOT
                                                                SCALE
CHLORINATION
(continued)
                                ZENON ENVIRONMENTAL
                                                                      AQUEOUS MEDIA
                                                                      ORGANIC LIQUID
                                                                      SLUDGES
                                                                                       NOT SPECIFIED
                                                                                                                            YES
                                                                                                                                      YES
CLARIFICATION
                                ANDCO ENVIRONMENTAL PROCESSES,  INC.    AQUEOUS MEDIA
                                                       NONVOLATILE METALS
                                                       VOLATILE METALS
                                                                                                                            YES
                                                                                                                                      YES
COAGULATION
                                DIVERSIFIED ENGINEERING, INC.
                                      AQUEOUS MEDIA
                                      ORGANIC LIQUID
                 INORGANIC CORROSIVES
                 INORGANIC CYANIDES
                 NONVOLATILE METALS
                 ORGANIC CYANIDES
                 REDUCERS
                 HALOGENATED NONVOLATILES
                 NONHALOGENATED NONVOLATILES
                 ORGANIC CORROSIVES
                 OXIDIZERS
                 RADIOACTIVE MATERIALS
                                                                                                                            YES
                                                                                                                                      YES
COAGULATION/FLOCCULATION
HUNTER SERVICES,  INC.
AQUEOUS MEDIA
ORGANIC LIQUID
DIOXINS/FURANS
HALOGENATED NONVOLATILES
HALOGENATED VOLATILES
INORGANIC CORROSIVES
NONHALOGENATED NONVOLATILES
NONHALOGENATED VOLATILES
NONVOLATILE METALS
ORGANIC CORROSIVES
ORGANIC SYANIDES
PCBs
PESTICIDES
VOLATILE METALS
                                                                                                                            YES       YES

-------
                       TABLE #  2  (CONTINUED)
TREATMENT TECHNOLOGY COMPANY NAME
COAGULATION/FLOCCULATION HUNTER SERVICES, INC.
(continued)
MEDIA TREATED
AQUEOUS MEDIA
ORGANIC LIQUID
CONTAMINANT GROUPS
DIOXINS/FURANS
HALOGENATED NONVOLATILES
BENCH
SCALE
YES
PILOT
SCALE
YES
                                                      HALOGENATED VOLATILES
                                                      INORGANIC CORROSIVES
                                                      NONHALOGENATED NONVOLATILES
                                                      NONHALOGENATED VOLATILES
                                                      NONVOLATILE METALS
                                                      ORGANIC CORROSIVES
                                                      ORGANIC CYANIDES
                                                      PCBs
                                                      PESTICIDES
                                                      VOLATILE METALS
KEYSTONE ENVIRONMENTAL  RESOURCES
                                      AQUEOUS MEDIA
                 NONHALOGENATED NONVOLATILES
                 HALOGENATED NONVOLATILES
                 NONVOLATILE METALS
                                                                                           YES
                                                                                                     YES
MCNAMEE ADVANCED  TECHNOLOGY,  INC.

ROY F. WESTON,  INC.
                                      AQUEOUS MEDIA     NONVOLATILE METALS
AQUEOUS MEDIA
ORGANIC LIQUID
PESTICIDES
DIOXINS/FURANS
NONVOLATILE METALS
INORGANIC CYANIDES
ORGANIC CYANIDES
INORGANIC CORROSIVES
ORGANIC CORROSIVES
HALOGENATED VOLATILES
HALOGENATED NONVOLATILES
NONHALOGENATED VOLATILES
NONHALOGENATED NONVOLATILES
PCBs
                                                      YES

                                                      YES
                                               YES

                                               YES
WESTERN RESEARCH INSTITUTE
AQUEOUS MEDIA
ORGANIC LIQUID
                                                       NONHALOGENATED  NONVOLATILES
                                                                                            YES
                                                                                                      NO

-------
TREATMENT TECHNOLOGY
                       TABLE # 2 (CONTINUED)

      COMPANY NAME                    MEDIA TREATED       CONTAMINANT GROUPS
                                                                                                                            BENCH
                                                                                                                            SCALE
          PILOT
          SCALE
COAGULATION/FLOCCULATION
(continued)
YEC INC
                                ZIMPRO PASSAVANT
                                      NOT SPECIFIED     NOT  SPECIFIED
                                                                      AQUEOUS MEDIA    NONVOLATILE METALS
YES

YES
YES

YES
COMBUSTOR EQUIPPED W/MASS SPEC  MIDWEST RESEARCH INSTITUTE
                                      OTHER SOLIDS      HALOGENATED  VOLATILES
                                      SEDIMENTS         HALOGENATED  NONVOLATILES
                                      SOILS            NONHALOGENATEO  NONVOLATILES
                                      SLUDGES           NONHALOGENATED  VOLATILES
                                                                                            YES
                                                                                                      NO
CRYSTALLIZATION
                                AAA CSI
                                AEA TECHNOLOGY
                                APPLIED SURFACE  TECHNOLOGY
                                                                      AQUEOUS MEDIA
                                                                      ORGANIC LIQUID
                                                       HALOGENATED  NONVOLATILES
                                                       HALOGENATED  VOLATILES
                                                       INORGANIC CORROSIVES
                                                       NONHALOGENATED NONVOLATILES
                                                       NONHALOGENATED VOLATILES
                                                       NONVOLATILE  METALS
                                                       ORGANIC CORROSIVES
                                                       OXIDIZERS
                                                       PCBs
                                                       PESTICIDES
                                                       REDUCERS
                                                       VOLATILE METALS
                                                                                                                            NO        NO
                                                                      NOT SPECIFIED     NOT  SPECIFIED
                                                                      AQUEOUS MEDIA
                                                                      ORGANIC LIQUIDS
                                                                      SLUDGES
                                                                      SOILS
                                                       INORGANIC CORROSIVES
                                                      OXIDIZERS
                                                       HALOGENATED NONVOLATILES
                                                       HALOGENATED VOLATILES
                                                       NONVOLATILE METALS
                                                      ORGANIC CYANIDES
                                                       INORGANIC CYANIDES
                                                                                           YES

                                                                                           YES
          YES

          YES
                                CHEMENCO,  INC.
                                     AQUEOUS MEDIA
                                                                                       NOT  SPECIFIED
                                                                                                                            YES
                                                                                                                                      NO

-------
TREATMENT TECHNOLOGY
                       TABLE  # 2 (CONTINUED)

      COMPANY NAME                    MEDIA TREATED
                                                                                          CONTAMINANT GROUPS
                                                      BENCH
                                                      SCALE
                                               PILOT
                                               SCALE
CRYSTALLIZATION
(continued)
CHEMENCO,  INC.
(continued)

E M & C ENGINEERING ASSOCIATES
                                INTERNATIONAL PROCESS  RESEARCH  CORP
                                IT CORPORATION

                                MAECORP,  INC.


                                OHM CORPORATION
ORGANIC LIQUID

AQUEOUS MEDIA
ORGANIC LIQUID
                                      AQUEOUS MEDIA
                                      ORGANIC LIQUID
                                                                      AQUEOUS MEDIA
DIOXINS/FURANS
HALOGENATED NONVOLATILES
HALOGENATED VOLATILES
INORGANIC CORROSIVES
INORGANIC CYANIDES
NONVOLATILE METALS
ORGANIC CYANIDES
OXIDIZERS
PCBs
PESTICIDES
REDUCERS
VOLATILE METALS

HALOGENATED NONVOLATILES
HALOGENATED VOLATILES
INORGANIC CORROSIVES
INORGANIC CYANIDES
NONHALOGENATED VOLATILES
NONVOLATILE METALS
ORGANIC CORROSIVES
ORGANIC CYANIDES
OXIDIZERS
REDUCERS

NOT SPECIFIED
                                                                                                                            INP
                                                                                                                                      INP
                                                                                                                            YES       YES
                                      AQUEOUS MEDIA    VOLATILE METALS
                                      ORGANIC LIQUID   NONVOLATILE METALS

                                      AQUEOUS MEDIA    VOLATILE METALS
                                      ORGANIC LIQUID   HALOGENATED NONVOLATILES
                                      SLUDGES          HALOGENATED VOLATILES
                                                       NONHALOGENATED VOLATILES
                                                      YES       YES

                                                      YES       YES


                                                      YES       YES

-------
                                                       TABLE # 2 (CONTINUED)
TREATMENT TECHNOLOGY
CRYSTALLIZATION
(continued)
COMPANY NAME
OHM CORPORATION
(continued)
MEDIA TREATED CONTAMINANT GROUPS
NONVOLATILE METALS
BENCH
SCALE

PILOT
SCALE

                                                                                       NONHALOGENATED NONVOLATILES
                                                                                       PESTICIDES
                                RIVER OAK ASSOCIATES
                                                                      AQUEOUS MEDIA
                                                                      ORGANIC LIQUID
                 HALOGENATED NONVOLATILES
                 HALOGENATED VOLATILES
                 INORGANIC CORROSIVES
                 INORGANIC CYANIDES
                 NONHALOGENATED NONVOLATILES
                 NONVOLATILE METALS
                 OXIDIZERS
                 RADIOACTIVE MATERIALS
                 REDUCERS
                 VOLATILE METALS
                                                                                                                            YES
                                                                                                                                      NO
                                RMT, INC.
AQUEOUS MEDIA
ORGANIC LIQUID
                                                                                       NOT SPECIFIED
                                                                                                                            YES
                                                                                                                                      YES
DEWATERING
                                MCNAMEE ADVANCED TECHNOLOGY, INC.

                                OHM CORPORATION
SLUDGES

AQUEOUS MEDIA
ORGANIC LIQUID
SLUDGES
NOT SPECIFIED

DIOXtNS/FURANS
HALOGENATED NONVOLATILES
HALOGENATED VOLATILES
NONHALOGENATED VOLATILES
NONVOLATILE METALS
NONHALOGENATED NONVOLATILES
PCBS
PESTICIDES
VOLATILE METALS
YES

YES
YES

YES
                                PYROGEN1CS, INC.
                                                                      SLUDGES
                 NONHALOGENATED NONVOLATILES
                 NONVOLATILE METALS
                 VOLATILE METALS
                                                                                                                            YES       YES

-------
                                                       TABLE # 2 (CONTINUED)
TREATMENT TECHNOLOGY COMPANY NAME

DEWATERING WESTERN RESEARCH INSTITUTE
(continued)



MEDIA TREATED


SEDIMENTS
SLUDGES
SOILS

CONTAMINANT GROUPS


INORGANIC CYANIDES
NONHALOGENATED NONVOLATILES
NONVOLATILE METALS
ORGANIC CYANIDES
BENCH PILOT
SCALE SCALE

INP INP



                                ZIMPRO PASSAVANT
                                                                      NOT SPECIFIED
                                                                                       NOT SPECIFIED
                                                                                                                            YES       YES
DISSOLVED AIR  FLOTATION
                                KEYSTONE ENVIRONMENTAL RESOURCES
                                                                      AQUEOUS MEDIA
                                                                                       NONHALOGENATED NONVOLATILES
                                                                                       HALOGENATED NONVOLATILES
                                                                                       NONVOLATILE METALS
                                                                                       NONHALOGENATED VOLATILES
                                                                                                                            YES       NO
                                YEC INC
                                                                      NOT SPECIFIED
                                                                                       NOT SPECIFIED
                                                                                                                            YES       YES
DISTILLATION
                                DIVERSIFIED ENGINEERING, INC.
AQUEOUS MEDIA
ORGANIC LIQUID
HALOGENATED VOLATILES
VOLATILE METALS
NONHALOGENATED VOLATILES
RADIOACTIVE MATERIALS
                                                      YES       YES
                                RMT, INC.
AQUEOUS MEDIA
ORGANIC LIQUID
INORGANIC CORROSIVES
ORGANIC CYANIDES
VOLATILE METALS
REDUCERS
PESTICIDES
HALOGENATED VOLATILES
INORGANIC CYANIDES
NONHALOGENATED VOLATILES
ORGANIC CORROSIVES
OXIDIZERS
                                                      YES       YES
ELECTROCHEMICAL
                                AHDCO ENVIRONMENTAL PROCESSES, INC.   AQUEOUS MEDIA
                 NONVOLATILE METALS
                 HALOGENATED NONVOLATILES
                                                                                                                            YES       YES

-------
TREATMENT TECHNOLOGY
                       TABLE # 2 (CONTINUED)

      COMPANY NAME                    MEDIA TREATED       CONTAMINANT GROUPS
                                                      BENCH     PILOT
                                                      SCALE     SCALE
ELECTROCHEMICAL
(continued)
ANDCO ENVIRONMENTAL PROCESSES,  INC.
(continued)
                 NONHALOGENATED NONVOLATILES
ELECTROCHEMICAL SEPARATION
                                IT CORPORATION
                                                                      AQUEOUS MEDIA
                                                       NONHALOGENATED  NONVOLATILES
                                                       INORGANIC CORROSIVES
                                                                                                                            YES       NO
ELECTROCOAGULATION
WESTERN RESEARCH INSTITUTE
AQUEOUS MEDIA
ORGANIC LIQUID
INORGANIC CYANIDES
NONHALOGENATED NONVOLATILES
NONVOLATILE METALS
ORGANIC CYANIDES
                                                                                                                            YES        YES
ELECTRODIALYS1S
                                APPLIED SURFACE TECHNOLOGY
                                EARTH TECHNOLOGY  CORP.
                                RADIAN CORPORATION
                                      AQUEOUS MEDIA
                                      ORGANIC LIQUIDS
                                      SLUDGES
                                      SOILS
                                      AQUEOUS  MEDIA
                                      ORGANIC  LIQUID

                                      AQUEOUS  MEDIA
                                      ORGANIC  LIQUID
                 INORGANIC CORROSIVES
                 OXIDIZERS
                 HALOGENATED NONVOLATILES
                 HALOGENATED VOLATILES
                 NONVOLATILE METALS
                 ORGANIC CYANIDES
                 INORGANIC CYANIDES

                 NOT SPECIFIED
                 HALOGENATED NONVOLATILES
                 HALOGENATED VOLATILES
                 NONHALOGENATED NONVOLATILES
                 NONHALOGENATED VOLATILES
                 NONVOLATILE METALS
                 ORGANIC CORROSIVES
                 ORGANIC CYANIDES
                 OXIDIZERS
                 PCBs
                 PESTICIDES
                 REDUCERS
                                                                                                                            YES        YES
                                                                                                                           YES        NO
                                                                                                                           YES        YES

-------
TREATMENT TECHNOLOGY
                                                       TABLE #  2  (CONTINUED)

                                      COMPANY  NAME                     MEDIA TREATED
                                                         CONTAMINANT GROUPS
                                     BENCH
                                     SCALE
PILOT
SCALE
ELECTROOIALYSIS
(continued)
RADIAN CORPORATION
(continued)

RIVER OAK ASSOCIATES
                                RMT, INC.
                                                                      AQUEOUS MEDIA
                                                                      ORGANIC LIQUID
                                      AQUEOUS MEDIA
                                      ORGANIC LIQUID
VOLATILE METALS

INORGANIC CORROSIVES
INORGANIC CYANIDES
NONHALOGENATED NONVOLATILES
NONVOLATILE METALS
OXIDIZERS
RADIOACTIVE MATERIALS
REDUCERS
VOLATILE METALS

INORGANIC CORROSIVES
NONVOLATILE METALS
ORGANIC CYANIDES
INORGANIC CYANIDES
VOLATILE METALS
                                                                                                                           YES
                                                                                                                                     NO
                                                                                                                            YES        YES
ELECTROLYSIS
                                APPLIED SURFACE TECHNOLOGY
                                      AQUEOUS MEDIA    INORGANIC CORROSIVES
                                      ORGANIC LIQUIDS  OXIDIZERS
                                                                                                                            YES       YES
                                                                      SLUDGES
                                                                      SOILS
                                                       HALOGENATED NONVOLATILES
                                                       HALOGENATED VOLATILES
                                                       NONVOLATILE METALS
                                                       ORGANIC CYANIDES
                                                       INORGANIC CYANIDES
ELECTROLYTIC OXIDATION
                                VERSAR INC.
                                                                      AQUEOUS MEDIA
                                                       INORGANIC CYANIDES
                                                       ORGANIC CYANIDES
                                                                                                                            YES       NO
EMULSION REMOVAL
                                WESTERN RESEARCH INSTITUTE
                                      AQUEOUS MEDIA
                                      ORGANIC LIQUID
                                      SLUDGES
                                      SOILS
                                                                                       NOT SPECIFIED
                                                                                                                            YES       NO

-------
TREATMENT TECHNOLOGY
                 TABLE # 2 (CONTINUED)

COMPANY NAME                    MEDIA TREATED       CONTAMINANT GROUPS
                                                                                                                            BENCH
                                                                                                                            SCALE
                                                                                                PILOT
                                                                                                SCALE
EVAPORATION
                                DIVERSIFIED ENGINEERING, INC.
                                RMT. INC.
                                AQUEOUS MEDIA
                                ORGANIC LIQUID
                                AQUEOUS MEDIA
                                ORGANIC LIQUID
                                WESTERN RESEARCH INSTITUTE
                                                                      AQUEOUS MEDIA
                                                                      ORGANIC LIQUID
                                                                      SLUDGES
HALOGENATED VOLATILES
VOLATILE METALS
NONHALOGENATED VOLATILES
RADIOACTIVE MATERIALS

NONHALOGENATED NONVOLATILES
HALOGENATED NONVOLATILES
INORGANIC CYANIDES
ORGANIC CYANIDES
NONVOLATILE METALS
INORGANIC CORROSIVES
ORGANIC CORROSIVES
PESTICIDES
OXIDIZERS
REDUCERS

NOT SPECIFIED
YES
                                                                                                YES
                                                                                      YES
                                                                                                YES
                                                                                      NO
                                                                                                YES
FILTRATION
                                AAA CSI
                                                                      AQUEOUS MEDIA
                                                                      ORGANIC LIQUID
                                                 HALOGENATED  NONVOLATILES
                                                 HALOGENATED  VOLATILES
                                                 INORGANIC CORROSIVES
                                                 NONHALOGENATED NONVOLATILES
                                                 NONHALOGENATED VOLATILES
                                                 NONVOLATILE  METALS
                                                 ORGANIC CORROSIVES
                                                 OXIDIZERS
                                                 PCBs
                                                 PESTICIDES
                                                 REDUCERS
                                                 VOLATILE METALS
                                                                                                                            NO
                                                                                                                                      NO

-------
TREATMENT TECHNOLOGY
                                                       TABLE # 2 (CONTINUED)

                                      COMPANY NAME                    MEDIA TREATED
                    CONTAMINANT GROUPS
                                     BENCH     PILOT
                                     SCALE     SCALE
FILTRATION
(continued)
                                ANDCO ENVIRONMENTAL PROCESSES,  INC.   AQUEOUS MEDIA
                                DIVERSIFIED ENGINEERING, INC.
                                ENSOTECH, INC.
                                HAECORP, INC.
                                MARINE POLUTION CONTROL
SLUDGES
AQUEOUS MEDIA
ORGANIC LIQUID
SEDIMENTS
OTHER SOLIDS
ORGANIC LIQUID
AQUEOUS MEDIA
AQUEOUS MEDIA
ORGANIC LIQUID
SEDIMENTS
OTHER SOLIDS

AQUEOUS MEDIA
SOILS
NONVOLATILE METALS
VOLATILE METALS

NONVOLATILE METALS
NONHALOGENATED NONVOLATILES
INORGANIC CYANIDES
RADIOACTIVE MATERIALS
REDUCERS
HALOGENATED NONVOLATILES
INORGANIC CORROSIVES
ORGANIC CORROSIVES
OXIDIZERS
ORGANIC CYANIDES

HALOGENATED NONVOLATILES
HALOGENATED VOLATILES
INORGANIC CORROSIVES
INORGANIC CYANIDES
NONHALOGENATED NONVOLATILES
NONHALOGENATED VOLATILES
NONVOLATILE METALS
OXIDIZERS
REDUCERS

NOT SPECIFIED
                                                                                                                            YES       YES
                                                                                                                            YES       YES
                                                                                                                            YES       YES
                                                                                                                            YES       YES
ASBESTOS
NONHALOGENATED VOLATILES
PCBs
                                                                                                                             INP        INP
                                MCNAMEE ADVANCED TECHNOLOGY, INC.
                                                                      AQUEOUS MEDIA
                                                                                       NOT  SPECIFIED
                                                                                                                             YES        YES

-------
TREATMENT TECHNOLOGY
                                                       TABLE it 2 (CONTINUED)

                                      COMPANY NAME                    MEDIA TREATED       CONTAMINANT GROUPS
                                                      BENCH
                                                      SCALE
                                               PILOT
                                               SCALE
FILTRATION
(continued)
                                ROY F. WESTON, INC.
AQUEOUS MEDIA
ORGANIC LIQUID
PESTICIDES
DIOXINS/FURANS
NONVOLATILE METALS
INORGANIC CYANIDES
ORGANIC CYANIDES
INORGANIC CORROSIVES
ORGANIC CORROSIVES
HALOGENATED VOLATILES
HALOGENATED NONVOLATILES
NONHALOGENATED NONVOLATILES
PCBs
NONHALOGENATED VOLATILES
                                                                                                                            YES
                                                                                                                                      YES
                                ROY F. WESTON, INC.
SEDIMENTS        PESTICIDES
SLUDGES          DIOXINS/FURANS
SOILS            NONVOLATILE METALS
                 INORGANIC CYANIDES
                 INORGANIC CORROSIVES
                 ORGANIC CYANIDES
                 ORGANIC CORROSIVES
                 HALOGENATED NONVOLATILES
                 HALOGENATED VOLATILES
                 NONHALOGENATED NONVOLATILES
                 NONHALOGENATED VOLATILES
                 PCBs
                                                                                                                            YES       YES
                                ZIMPRO PASSAVANT
                                                                      AQUEOUS  MEDIA
                                                                      ORGANIC  LIQUID
                                                                                       NONVOLATILE  METALS
                                                                                                                            YES        YES
FILTRATION/NEUTRALIZ/PRECIPIT.  KEYSTONE ENVIRONMENTAL RESOURCES
                                                                      AQUEOUS  MEDIA
                 NONHALOGENATED NONVOLATILES
                 HALOGENATED NONVOLATILES
                 NONVOLATILE METALS
                                                                                                                            YES        YES

-------
TREATMENT TECHNOLOGY
                                                       TABLE  #  2  (CONTINUED)

                                      COMPANY  NAME                     MEDIA TREATED
                    CONTAMINANT  GROUPS
                                     BENCH
                                     SCALE
PILOT
SCALE
FIXATION
                                PEI  ASSOCIATES,  INC.
                                                                      SOILS
                 HALOGENATED  VOLATILES
                 PESTICIDES
                 NONVOLATILE  METALS
                 VOLATILE METALS
                 NONHALOGENATED VOLATILES
                                                                                                                           INP
                                                                                                                                     INP
FLOCCULATION SETTLING
                                DIVERSIFIED  ENGINEERING,  INC.
AQUEOUS MEDIA
ORGANIC LIQUID
HALOGENATED NONVOLATILES
NONHALOGENATED NONVOLATILES
ORGANIC CYANIDES
INORGANIC CYANIDES
NONVOLATILE METALS
RADIOACTIVE MATERIALS
                                                                                                                           YES       YES
FLOTATION
                                WESTERN RESEARCH  INSTITUTE
AQUEOUS MEDIA
ORGANIC LIQUID
                                                                                       NONHALOGENATED  NONVOLATILES
                                                                                                                           YES       NO
FLOTATION THICKENING
                                ROY F.  WESTON,  INC.
SEDIMENTS        PESTICIDES
SLUDGES          DIOXINS/FURANS
SOILS            NONVOLATILE METALS
                 INORGANIC CYANIDES
                 INORGANIC CORROSIVES
                 ORGANIC CYANIDES
                 ORGANIC CORROSIVES
                 HALOGENATED NONVOLATILES
                 HALOGENATED VOLATILES
                 NONHALOGENATED NONVOLATILES
                 NONHALOGENATED VOLATILES
                 PCBs
                                                                                                                           YES        NO
FLUID-BED STRIPPING
                                APPLIED SURFACE TECHNOLOGY
                                                                      AQUEOUS MEDIA
                                                                                       INORGANIC CORROSIVES
                                                                                                                            YES       YES

-------
TREATMENT TECHNOLOGY
                       TABLE # 2 (CONTINUED)

      COMPANY NAME                    MEDIA TREATED       CONTAMINANT GROUPS
                                                      BENCH     PILOT
                                                      SCALE     SCALE
FLUID-BED STRIPPING
(continued)
APPLIED SURFACE TECHNOLOGY
(continued)
ORGANIC LIQUIDS
SLUDGES
SOILS
OX1D1ZERS
HALOGENATED NONVOLATILES
HALOGENATED VOLATILES
NONVOLATILE METALS
ORGANIC CYANIDES
INORGANIC CYANIDES
FREEZE CONCENTRATION
                                MAECORP, INC.
                                      AQUEOUS MEDIA
                                      ORGANIC LIQUID
                 VOLATILE METALS
                 NONVOLATILE METALS
                                                                                                                            YES
                                                                                                                                      YES
FREEZE CRYSTALLIZATION
                                FREEZE TECHNOLOGIES CORPORATION
                                MCNAMEE ADVANCED TECHNOLOGY, INC.
                                                                      AQUEOUS MEDIA
                                                                                       NONVOLATILE METALS
                                                                                       ORGANIC CORROSIVES
                                                                                       HALOGENATED VOLATILES
                                                                                       NONHALOGENATED VOLATILES
                                      AQUEOUS MEDIA    NONVOLATILE METALS
                                                                                                                            NO
                                                                                                                                      YES
                                                                                                                            YES
                                                                                                                                      NO
GRAVITY (OIL/WATER)
DIVERSIFIED ENGINEERING,  INC.
                                      AQUEOUS MEDIA
                 NONHALOGENATED  NONVOLATILES
                 HALOGENATED  NONVOLATILES
                 NONHALOGENATED  VOLATILES
                 HALOGENATED  VOLATILES
                                                                                                                            YES
                                                                                                      YES
GRAVITY THICKENING
                                ROY F. WESTON, INC.
                                      SEDIMENTS        PESTICIDES
                                      SLUDGES          DIOXINS/FURANS
                                      SOILS            NONVOLATILE METALS
                                                       INORGANIC CYANIDES
                                                       INORGANIC CORROSIVES
                                                       ORGANIC CYANIDES
                                                       ORGANIC CORROSIVES
                                                       HALOGENATED NONVOLATILES
                                                       HALOGENATED VOLATILES
                                                                                                                            YES       YES

-------
TREATMENT TECHNOLOGY
                       TABLE # 2 (CONTINUED)

      COMPANY NAME                    MEDIA TREATED       CONTAMINANT GROUPS
                                     BENCH     PILOT
                                     SCALE     SCALE
GRAVITY THICKENING
(continued)
ROY F. WESTON, INC.
(continued)
NONHALOGENATED NONVOLATILES
NONHALOGENATED VOLATILES
PCBs
<> IN SITU RADIO FREQUENCY HEATING, SEE IN SITU TECHNOLOGIES

<> IN SITU SOIL FLUSHING, SEE IN SITU TECHNOLOGIES

<> IN SITU VACUUM & STEAM STRIPPING AND EXTRACTION, SEE IN SITU TECHNOLOGIES

ION EXCHANGE                    AEA TECHNOLOGY
                                      AQUEOUS MEDIA    RADIOACTIVE MATERIALS
                                      ORGANIC LIQUID
                                      SEDIMENTS
                                      SLUDGES
                                      SOILS
                                ANDCO ENVIRONMENTAL PROCESSES, INC.   AQUEOUS MEDIA    NONVOLATILE METALS
                                APPLIED SURFACE TECHNOLOGY
                                BIO-RECOVERY SYSTEMS, INC.
                                C-E ENVIRONMENTAL, INC.
                                CHEMENCO, INC.
                                      AQUEOUS MEDIA    INORGANIC CORROSIVES
                                      ORGANIC LIQUIDS  OXIDIZERS
                                      SLUDGES          HALOGENATED NONVOLATILES
                                      SOILS            HALOGENATED VOLATILES
                                                       NONVOLATILE METALS
                                                       ORGANIC CYANIDES
                                                       INORGANIC CYANIDES

                                      AQUEOUS MEDIA    NONVOLATILE METALS
                                      SLUDGES

                                      AQUEOUS MEDIA    HALOGENATED NONVOLATILES
                                                       HALOGENATED VOLATILES

                                      AQUEOUS MEDIA    NOT SPECIFIED
                                      ORGANIC LIQUID
                                                                                            YES       YES
                                                                                            YES       INP

                                                                                            YES       YES
                                                                                                                            YES       NO
                                                                                                                            YES       YES
                                                                                                                            YES       NO

-------
TREATMENT TECHNOLOGY
                                      COMPANY NAME
TABLE # 2 (CONTINUED)

               MEDIA TREATED
                                                                                          CONTAMINANT GROUPS
                                                                                                                            BENCH
                                                                                                                            SCALE
                                                                               PILOT
                                                                               SCALE
ION EXCHANGE
(continued)
                                DIVERSIFIED ENGINEERING, INC.
               AQUEOUS MEDIA
               ORGANIC LIQUID
HALOGENATED NONVOLATILES
NONVOLATILE METALS
NONHALOGENATED NONVOLATILES
RADIOACTIVE MATERIALS
                                                                     YES
                                                                               YES
                                E M & C ENGINEERING ASSOCIATES
                                                                      AQUEOUS MEDIA
                                                                      ORGANIC LIQUID
                                DIOXINS/FURANS
                                HALOGENATED  NONVOLATILES
                                HALOGENATED  VOLATILES
                                INORGANIC  CORROSIVES
                                INORGANIC  CYANIDES
                                NONVOLATILE  METALS
                                ORGANIC  CYANIDES
                                OXIDIZERS
                                PCBs
                                PESTICIDES
                                REDUCERS
                                VOLATILE METALS
                                                                                                                            INP       INP
                                EARTH TECHNOLOGY CORP.
                                                                      AQUEOUS  MEDIA
                                                                      ORGANIC  LIQUID
                                                                                       NOT  SPECIFIED
                                                                                                                           YES        MO
                                ENSOTECH,  INC.
              ORGANIC LIQUID
              AQUEOUS MEDIA
HALOGENATED NONVOLATILES
HALOGENATED VOLATILES
INORGANIC CORROSIVES
INORGANIC CYANIDES
NONHALOGENATED NONVOLATILES
NONHALOGENATED VOLATILES
NONVOLATILE METALS
OXIDIZERS
REDUCERS
                                                                                                                           YES        YES
                                ENVIRONMENTAL  RESOURCE  ASSOCIATES
                                                                      AQUEOUS MEDIA
                                                                                       HALOGENATED VOLATILES
                                                                                       HALOGENATED VOLATILES
                                                                                       INORGANIC  CORROSIVES
                                                                                                                           YES        YES

-------
TREATMENT TECHNOLOGY
                       TABLE # 2 (CONTINUED)

      COMPANY NAME                    MEDIA TREATED
   CONTAMINANT GROUPS
BENCH
SCALE
PILOT
SCALE
ION EXCHANGE
(continued)
ENVIRONMENTAL RESOURCE ASSOCIATES
(continued)
NONHALOGENATEO NONVOLATILES
NONHALOGENATED VOLATILES
NONVOLATILE METALS
                                ENVIRONMENTAL  TECHNOLOGY  SOUTHEAST
                                                                      AQUEOUS  MEDIA
                                                       HALOGENATED  NONVOLATILES
                                                       HALOGENATED  VOLATILES
                                                       NONHALOGENATED  NONVOLATILES
                                                       NONHALOGENATED  VOLATILES
                                                       NONVOLATILE  METALS
                                                                                                                            INP
                                                                                                                                      INP
                                ENVIROTECH  MID-ATLANTIC
                                      AQUEOUS MEDIA
                                      ORGANIC LIQUID
HALOGENATED NONVOLATILES
HALOGENATED VOLATILES
NONHALOGENATED NONVOLATILES
NONHALOGENATED VOLATILES
NONVOLATILE METALS
                                                                                                                           YES
                                                                                                                                     YES
                                GENERAL PHYSICS  CORPORATION
                                                                      AQUEOUS MEDIA
                                                                      ORGANIC LIQUID
                                                       NONVOLATILE METALS
                                                       ORGANIC CORROSIVES
                                                       ORGANIC CYANIDES
                                                       OXIDIZERS
                                                       REDUCERS
                                                       VOLATILE METALS
                                                                                                                            YES
                                                                                                                                     YES
                                INTERNATIONAL  PROCESS  RESEARCH CORP
                                                                      AQUEOUS MEDIA
                                                                      ORGANIC LIQUID
                                                       HALOGENATED NONVOLATILES
                                                       HALOGIEATED BOLAITLES
                                                       INORGANIC CORROSIVES
                                                       INORGANIC CYANIDES
                                                       NONHALOGENATED VOLATILES
                                                       NONVOLATILE METALS
                                                       ORGANIC CORROSIVES
                                                       ORGANIC CYANIDES
                                                       OXIDIZERS
                                                       REDUCERS
                                                                                                                            YES
                                                                                                                                      YES
                                IT CORPORATION
                                                                      AQUEOUS MEDIA    NONVOLATILE METALS
                                                                                                                            YES
                                                                                                                                      YES

-------
TREATMENT TECHNOLOGY
                       TABLE # 2 (CONTINUED)

      COMPANY NAME                    MEDIA TREATED       CONTAMINANT GROUPS
                                                                                                                            BENCH     PILOT
                                                                                                                            SCALE     SCALE
ION EXCHANGE
(continued)
IT CORPORATION
(continued)

KEYSTONE ENVIRONMENTAL RESOURCES
                                MAECORP,  INC.
                                MCNAMEE  ADVANCED  TECHNOLOGY,  INC.
                                O'BRIEN AND  GERE ENGINEERS,  INC.
                                OHM  CORPORATION
                               QUALTEC,  INC.
                               RADIAN CORPORATION
                                                                      AQUEOUS MEDIA
                                      AQUEOUS MEDIA
                                      ORGANIC LIQUID
                                      SLUDGES
                                      SOILS
                                      OTHER  SOLIDS

                                      AQUEOUS MEDIA
RADIOACTIVE MATERIALS

NONVOLATILE METALS
VOLATILE METALS
INORGANIC CYANIDES

VOLATILE METALS
NONVOLATILE METALS
HALOGENATED VOLATILES
                                                       NONVOLATILE METALS
                                                       INORGANIC CYANIDES
                                     AQUEOUS MEDIA    NONVOLATILE METALS
                                     ORGANIC LIQUID   VOLATILE METALS
                                                      INORGANIC CYANIDES

                                     AQUEOUS MEDIA    NONVOLATILE METALS
                                     ORGANIC LIQUID   VOLATILE METALS
                                     SLUDGES

                                     AQUEOUS MEDIA    HALOGENATED VOLATILES
                                                      NONHALOGENATED NONVOLATILES
                                                      NONHALOGENATED VOLATILES
                                                      NONVOLATILE METALS
                                                      PCBs

                                     AQUEOUS MEDIA    HALOGENATED NONVOLATILES
                                     ORGANIC LIQUID   HALOGENATED VOLATILES
                                                      NONHALOGENATED NONVOLATILES
                                                      NONHALOGENATED VOLATILES
                                                      NONVOLATILE METALS
                                                      ORGANIC CORROSIVES
                                                                                                                            YES       YES
                                                                                                                            YES       YES
                                                                                                                            YES
                                                                                                                           YES
                                                                                                                           YES
                                                                                                                            INP
                                                                                                                                      YES
                                                                                                                                     YES
                                                                                                                                     YES
                                                                                                                                      INP
                                                                                                                           YES       YES

-------
            TREATMENT  TECHNOLOGY
                       TABLE # 2 (CONTINUED)

      COMPANY NAME                    MEDIA TREATED       CONTAMINANT GROUPS
                                                                                                                                       BENCH     PILOT
                                                                                                                                       SCALE     SCALE
            ION  EXCHANGE
            (continued)
RADIAN CORPORATION
(continued)
                                                                                                  ORGANIC CYANIDES
                                                                                                  OXIDIZERS
                                                                                                  PCBs
                                                                                                  PESTICIDES
                                                                                                  REDUCERS
                                                                                                  VOLATILE METALS
                                            RIVER OAK ASSOCIATES
                                                                                 AQUEOUS MEDIA
                                                                                 ORGANIC LIQUID
OJ
O
                                           RMT,  INC.
                                      AQUEOUS MEDIA
                                      ORGANIC LIQUID
VOLATILE METALS
NONVOLATILE METALS
RADIOACTIVE MATERIALS
REDUCERS
INORGANIC CORROSIVES
INORGANIC CYANIDES
OXIDIZERS

VOLATILE METALS
INORGANIC CORROSIVES
ORGANIC CORROSIVES
INORGANIC CYANIDES
ORGANIC CYANIDES
NONVOLATILE METALS
OXIDIZERS
REDUCERS
                                                                                                                                       YES       NO
                                                                                            YES       YES
                                           RNK ENVIRONMENTAL,  INC.
                                      AQUEOUS MEDIA
                                      ORGANIC LIQUID
VOLATILE METALS
NONVOLATILE METALS
                                                                                            YES       YES
                                           ROY F. WESTON, INC.
                                      AQUEOUS MEDIA
                                      ORGANIC LIQUID
PESTICIDES
DIOXINS/FURANS
NONVOLATILE METALS
INORGANIC CYANIDES
ORGANIC CYANIDES
INORGANIC CORROSIVES
ORGANIC CORROSIVES
HALOGENATED VOLATILES
                                                                                            YES       YES

-------
 TREATMENT TECHNOLOGY
                       TABLE # 2 (CONTINUED)

      COMPANY NAME                    MEDIA TREATED       CONTAMINANT GROUPS
                                                                                                                             BENCH     PILOT
                                                                                                                             SCALE     SCALE
 ION EXCHANGE
 (continued)
ROY F. WESTON,  INC.
(continued)
                                 SYBRON  CHEMICALS,  INC.
                                      AQUEOUS  MEDIA
                                      ORGANIC  LIQUID
                                VERSAR  INC.
                                                                      AQUEOUS MEDIA
                                WESTERN RESEARCH INSTITUTE
                                WOODWARD CLYDE CONSULTANTS
                                                                      AQUEOUS MEDIA
                                                                      SLUDGES
                                                                      AQUEOUS MEDIA
                                                                      ORGANIC LIQUID
 HALOGENATED  NONVOLATILES
 NONHALOGENATED NONVOLATILES
 NONHALOGENATED VOLATILES
 PCBs

 HALOGENATED  NONVOLATILES
 HALOGENATED  VOLATILES
 INORGANIC CYANIDES
 NONHALOGENATED NONVOLATILES
 NONHALOGENATED VOLATILES
 NONVOLATILE  METALS
 ORGANIC CYANIDES

 ORGANIC CYANIDES
 NONVOLATILE  METALS
 INORGANIC CORROSIVES
 INORGANIC CYANIDES
 VOLATILE METALS

 INORGANIC CYANIDES
NONHALOGENATED NONVOLATILES
NONVOLATILE METALS
ORGANIC CYANIDES

NOT SPECIFIED
                                                                                                                            YES       YES
                                                                                                                            YES       NO
                                                                                           INP       IMP
                                                                                           YES       YES
                                YEC INC
                                                                      NOT SPECIFIED    NOT SPECIFIED
                                                                                                                            YES       YES
LIQUID-LIQUID EXTRACTION
                                AAA CSI
                                                                      AQUEOUS MEDIA
                                                                      ORGANIC LIQUID
                                                      HALOGENATED NONVOLATILES
                                                      HALOGENATED VOLATILES
                                                      INORGANIC CORROSIVES
                                                      NONHALOGENATED NONVOLATILES
                                                      NONHALOGENATED VOLATILES
                                     NO        NO

-------
TREATMENT TECHNOLOGY
                                      COMPANY NAME
TABLE # 2 (CONTINUED)

               MEDIA TREATED
                                                                                          CONTAMINANT  GROUPS
                                                                                                                            BENCH      PILOT
                                                                                                                            SCALE      SCALE
LIQUID-LIQUID EXTRACTION        AAA CSI
(continued)                     (continued)
                                NONVOLATILE  METALS
                                ORGANIC CORROSIVES
                                OXIDIZERS
                                PCBs
                                PESTICIDES
                                REDUCERS
                                VOLATILE METALS
                                AEA TECHNOLOGY
                                                                      AQUEOUS MEDIA
                                                                      ORGANIC LIQUID
                                NOT  SPECIFIED
                                                                     YES        YES
                                C-EE  BIOREMEDIATION  SYSTEMS
                                CHEMENCO,  INC.
                                                                      AQUEOUS  MEDIA
                                                                      ORGANIC  LIQUID
               AQUEOUS  MEDIA
               ORGANIC  LIQUID
HALOGENATED VOLATILES
HALOGENATED NONVOLATILES
NONHALOGENATED VOLATILES
NONHALOGENATED NONVOLATILES
PCBs
PESTICIDES

NOT SPECIFIED
                                                                                                                           YES       NO
                                     YES       NO
                                DIVERSIFIED ENGINEERING,  INC.
                                E M & C ENGINEERING ASSOCIATES
               AQUEOUS  MEDIA
               ORGANIC  LIQUID
               SEDIMENTS
               SLUDGES

               AQUEOUS  MEDIA
               ORGANIC  LIQUID
HALOGENATED NONVOLATILES
NONHALOGENATED NONVOLATILES
ORGANIC CORROSIVES
RADIOACTIVE MATERIALS

DIOXINS/FURANS
HALOGENATED NONVOLATILES
HALOGENATED VOLATILES
INORGANIC CORROSIVES
INORGANIC CYANIDES
NONVOLATILE METALS
ORGANIC CYANIDES
OXIDIZERS
PCBs
YES       INP
                                                                                                                            INP        INP

-------
TREATMENT TECHNOLOGY
                       TABLE # 2 (CONTINUED)

      COMPANY NAME                     MEDIA TREATED       CONTAMINANT  GROUPS
                                                                                                                            BENCH      PILOT
                                                                                                                            SCALE      SCALE
LIQUID-LIQUID EXTRACTION
(continued)
E M & C ENGINEERING  ASSOCIATES
(continued)
                                                                                       PESTICIDES
                                                                                       REDUCERS
                                                                                       VOLATILE  METALS
                                ENWRIGHT ENVIRONMENTAL,  INC.
                                     AQUEOUS MEDIA
                                     ORGANIC LIQUID
RADIOACTIVE MATERIALS
                                     YES       NO
                                GENERAL PHYSICS  CORPORATION
                                                                      AQUEOUS MEDIA
                                                                      ORGANIC LIQUID
                                                                      SLUDGES
                                                                      SOILS
                                                      HALOGENATED NONVOLATILES
                                                      HALOGENATED VOLATILES
                                                      NONHALOGENATED NONVOLATILES
                                                      NONHALOGENATED VOLATILES
                                                      ORGANIC CORROSIVES
                                                      ORGANIC CYANIDES
                                                      PCBs
                                                      VOLATILE METALS
                                     YES       YES
                                INTERNATIONAL PROCESS RESEARCH CORP
                                                                     AQUEOUS MEDIA
                                                                     ORGANIC LIQUID
                                                      HALOGENATED NONVOLATILES
                                                      HALOGENATED VOLATILES
                                                      INORGANIC CORROSIVES
                                                      INORGANIC CYANIDES
                                                      NONHALOGENATED VOLATILES
                                                      NONVOLATILE METALS
                                                      ORGANIC CORROSIVES
                                                      ORGANIC CYANIDES
                                                      OXIDIZERS
                                                      REDUCERS
                                     YES       YES
                                IT CORPORATION
                                JACOBS ENGINEERING GROUP, INC.
                                                                     AQUEOUS MEDIA
                                                                     SLUDGES
                                     AQUEOUS MEDIA
                                     ORGANIC LIQUID
NONHALOGENATED NONVOLATILES
PCBs
DIOXINS/FURANS

HALOGENATED NONVOLATILES
HALOGENATED VOLATILES
NONHALOGENATED NONVOLATILES
NONHALOGENATED VOLATILES
                                                                                           YES       YES
YES
          NO

-------
TREATMENT TECHNOLOGY
                 TABLE  # 2 (CONTINUED)

COMPANY NAME                    MEDIA TREATED       CONTAMINANT GROUPS
                                     BENCH     PILOT
                                     SCALE     SCALE
LIQUID-LIQUID EXTRACTION
(continued)
                                MAECORP,  INC.
                                MCNAMEE ADVANCED TECHNOLOGY, INC.
                                O'BRIEN AND GERE ENGINEERS, INC.
                                RMT,  INC.
                                S-CUBED
                                VERSAR  INC.
                                AQUEOUS MEDIA
                                ORGANIC LIQUID

                                AQUEOUS MEDIA
                                AQUEOUS MEDIA
                                ORGANIC LIQUID

                                AQUEOUS MEDIA
                                ORGANIC LIQUID
                                                                     AQUEOUS MEDIA
                                                                     AQUEOUS MEDIA
                                                                     ORGANIC LIQUID
VOLATILE METALS
NONVOLATILE METALS

HALOGENATED NONVOLATILES
NONHALOGENATED NONVOLATILES
ORGANIC CYANIDES
ORGANIC CORROSIVES

HALOGENATED NONVOLATILES
NONHALOGENATED NONVOLATILES

HALOGENATED VOLATILES
NONHALOGENATED NONVOLATILES
NONHALOGENATED VOLATILES
PESTICIDES

DIOXINS/FURANS
HALOGENATED VOLATILES
NONHALOGENATED VOLATILES
ORGANIC CYANIDES
PCBS
PESTICIDES

HALOGENATED NONVOLATILES
HALOGENATED VOLATILES
PCBs
PESTICIDES
NONHALOGENATED NONVOLATILES
NONHALOGENATED VOLATILES
                                                                                                                           YES       YES
                                                                                                                           YES       YES
                                                                                                                           YES       YES
                                                                                                                           YES       YES
                                                                                                                            YES        NO
                                                                                                                            YES        NO
                                WESTERN RESEARCH INSTITUTE
                                                                     AQUEOUS MEDIA
                                                                     ORGANIC LIQUID
                                                                                       NONHALOGENATED  NONVOLATILES
                                                                                                                            INP        INP

-------
TREATMENT TECHNOLOGY
                 TABLE # 2  (CONTINUED)

COMPANY NAME                    MEDIA TREATED       CONTAMINANT  GROUPS
                                                                                                                            BENCH
                                                                                                                            SCALE
                                                                                                PILOT
                                                                                                SCALE
LIQUID-SOLID SEPARATION
                                AEA TECHNOLOGY
                                WESTERN RESEARCH INSTITUTE
                                AQUEOUS MEDIA
                                ORGANIC LIQUID
                                SEDIMENTS
                                SLUDGES
                                SOILS

                                AQUEOUS MEDIA
                                ORGANIC LIQUID
                                                                                       NOT SPECIFIED
                                                                                                                            INP
                                                                                                                                      INP
                                                                                       INORGANIC  CYANIDES
                                                                                       NONHALOGENATED  NONVOLATILES
                                                                                       NONVOLATILE  METALS
                                                                                       ORGANIC CYANIDES
                                                                                                                            YES       YES
LOU ENERGY EXTRACTION PROCESS   APPLIED REMEDIATION  TECHNOLOGY,  INC
                                SEDIMENTS
                                SLUDGES
                                SOILS
                                OTHER SOLIDS
PCBs
PESTICIDES
NONHALOGENATED VOLATILES
HALOGENATED VOLATILES
NONVOLATILE METALS
VOLATILE METALS
                                                                                      YES        YES
LOW TEMP THERMAL EXTRACTION
                                C-E ENVIRONMENTAL,  INC.
                               SLUDGES
                               SOILS
HALOGENATED VOLATILES
NONHALOGENATED NONVOLATILES
                                                                                      YES        YES
LOW TEMP THERMAL STRIPPING
                                AAA CSI
                                                                     SEDIMENTS        HALOGENATED NONVOLATILES
                                                                     SLUDGES          HALOGENATED VOLATILES
                                                                     SOILS            INORGANIC CORROSIVES
                                                                                      NONHALOGENATED NONVOLATILES
                                                                                      NONHALOGENATED VOLATILES
                                                                                      NONVOLATILE METALS
                                                                                      ORGANIC CORROSIVES
                                                                                      OXIDIZERS
                                                                                      PCBs
                                                                                      PESTICIDES
                                                                                      REDUCERS
                                                                                                                            NO
                                                                                                                                      NO

-------
TREATMENT TECHNOLOGY
                 TABLE # 2 (CONTINUED)

COMPANY NAME                    MEDIA TREATED       CONTAMINANT GROUPS
                                                                                                                            BENCH
                                                                                                                            SCALE
                                               PILOT
                                               SCALE
LOW TEMP THERMAL STRIPPING      AAA CSI
(continued)                     (continued)
                                APPLIED  SURFACE  TECHNOLOGY
                                C-EE  BIOREMEDIATION  SYSTEMS
                                CHEMENCO,  INC.
                                E  M &  C  ENGINEERING  ASSOCIATES
                                                                      AQUEOUS MEDIA
                                                                      ORGANIC LIQUIDS
                                                                      SLUDGES
                                                                      SOILS
                                                 VOLATILE METALS

                                                 INORGANIC CORROSIVES
                                                 OXIDIZERS
                                                 HALOGENATED NONVOLATILES
                                                 HALOGENATED VOLATILES
                                                 NONVOLATILE METALS
                                                 ORGANIC CYANIDES
                                                 INORGANIC CYANIDES
                                                                      SEDIMENTS         HALOGENATED  NONVOLATILES
                                                                      SLUDGES          HALOGENATED  VOLATILES
                                                                      SOILS             NONHALOGENATED  NONVOLATILES
                                                                                       NONHALOGENATED  VOLATILES
                                                                                       PCBs
                                                                                       PESTICIDES
                                                                                                                            YES
                                                                                                                                      YES
                                OTHER SOLIDS
                                SEDIMENTS
                                SOILS
                                SLUDGES

                                SLUDGES
                                OTHER SOILDS
                                SOILS
                                                                                                                            YES
                                                                                                                                      NO
NOT SPECIFIED
                                                                                      YES
                                                                                                                                      NO
                                                                                       DIOXINS/FURANS
                                                                                       HALOGENATED  NONVOLATILES
                                                                                       HALOGENATED  VOLATILES
                                                                                       INORGANIC CORROSIVES
                                                                                       INORGANIC CYANIDES
                                                                                       NONVOLATILE  METALS
                                                                                       ORGANIC  CYANIDES
                                                                                       OXIDIZERS
                                                                                       PCBS
                                                                                       PESTICIDES
                                                                                       REDUCERS
                                                                                       VOLATILE METALS
                                                                                                                            INP
                                               INP

-------
TREATMENT TECHNOLOGY
                                      COMPANY NAME
                       TABLE # 2 (CONTINUED)

                                      MEDIA TREATED
                                                                                          CONTAMINANT GROUPS
                                                                                                                            BENCH
                                                                                                                            SCALE
                                                                                                      PILOT
                                                                                                      SCALE
LOW TEMP THERMAL STRIPPING
(continued)
EARTH TECHNOLOGY  CORP.
                                      SEDIMENTS
                                      SLUDGES
                                      SOILS
                                                                                       NOT SPECIFIED
                                                                                                                            YES
                                                                                                                                      NO
                                ENSOTECH,  INC.
                                      OTHER  SOLIDS      HALOGENATED  NONVOLATILES
                                      SEDIMENTS         HALOGENATED  VOLATILES
                                      SLUDGES           INORGANIC  CORROSIVES
                                      SOILS             INORGANIC  CYANIDES
                                                       NONHALOGENATED  NONVOLATILES
                                                       NONHALOGENATED  VOLATILES
                                                       NONVOLATILE  METALS
                                                       OXIDIZERS
                                                       REDUCERS
                                                                                            YES        YES
                                HUNTER  SERVICES,  INC.
                                     AQUEOUS MEDIA
                                                      DIOXINS/FURANS
                                                      HALOGENATED NONVOLATILES
                                                      HALOGENATED VOLATILES
                                                      NONHALOGENATED NONVOLATILES
                                                      NONHALOGENATED VOLATILES
                                                      NONVOLATILE METALS
                                                      ORGANIC CORROSIVES
                                                      ORGANIC CYANIDES
                                                      OXIDIZERS
                                                      PCBs
                                                      PESTICIDES
                                                      REDUCERS
YES       YES
                                11T  RESEARCH  INST
                                                                     SLUDGES
                                                                     OTHER SOLIDS
                                                                     SOILS
                                                      HALOGENATED VOLATILES
                                                                                                                            INP        YES
                                IT  CORPORATION
                                                                     SOILS
                                                                                      DIOXINS/FURANS
                                                                                      HALOGENATED NONVOLATILES
                                                                                      HALOGENATED VOLATILES
                                                                                      NONHALOGENATED NONVOLATILES
                                                                                                                           YES        YES

-------
TREATMENT TECHNOLOGY
                                                       TABLE  #  2  (CONTINUED)

                                      COMPANY  NAME                     MEDIA TREATED
                                                          CONTAMINANT  GROUPS
                                     BENCH     PILOT
                                     SCALE     SCALE
LOW TEMP THERMAL STRIPPING
(continued)
IT CORPORATION
(continued)
                                KSE, INC.
                                MAECORP,  INC.
                                OHM CORPORATION
                                RMT, INC.
                                ROY F. WESTON,  INC.
                                      SOILS
                                      SLUDGES
                                      OTHER SOLIDS
NONHALOGENATED VOLATILES
NONVOLATILE METALS
PCBs
PESTICIDES
RADIOACTIVE MATERIALS

HALOGENATED VOLATILES
NONHALOGENATED VOLATILES
NONVOLATILE METALS
VOLATILE METALS
                                      SEDIMENTS        HALOGENATED VOLATILES
                                      SLUDGES          NONHALOGENATED VOLATILES
                                      SOILS

                                      SOILS            HALOGENATED VOLATILES
                                      SLUDGES          NONHALOGENATED VOLATILES
                                      OTHER SOLIDS     VOLATILE METALS

                                      SEDIMENTS        PCBs
                                      SLUDGES          NONHALOGENATED VOLATILES
                                      SOILS            HALOGENATED VOLATILES

                                      SEDIMENTS        PESTICIDES
                                      SLUDGES          DIOXINS/FURANS
                                      SOILS            NONVOLATILE METALS
                                                       VOLATILE METALS
                                                       PCBS
                                                       HALOGENATED NONVOLATILES
                                                       HALOGENATED VOLATILES
                                                       NONHALOGENATED NONVOLATILES
                                                       NONHALOGENATED VOLATILES
                                                                                                                            YES
                                                                                                                                      YES
                                                                                                                            YES
                                                                                                                            YES
                                                                                                                            YES
                                                                                                                            YES
                                                                                                                                      YES
                                                                                                                                      YES
                                                                                                                                      YES
                                                                                                                                      YES
MIXED MEDIA FILTRATION
O'BRIEN AND GERE ENGINEERS, INC.
                                                                      AQUEOUS MEDIA
                                                                                       NOT SPECIFIED
                                                                                                                            YES       YES

-------
TREATMENT TECHNOLOGY
                       TABLE # 2 (CONTINUED)

      COMPANY NAME                    MEDIA TREATED       CONTAMINANT GROUPS
                                                                                                                            BENCH
                                                                                                                            SCALE
                                                                                                      PILOT
                                                                                                      SCALE
MIXED MEDIA FILTRATION
(continued)
O'BRIEN AND GERE ENGINEERS,  INC.
(continued)
                                                                      ORGANIC LIQUID
NEUTRALIZATION
                                AAA CSI
                                                                      AQUEOUS MEDIA
                                                                      ORGANIC LIQUID
                                                       HALOGENATED  NONVOLATILES
                                                       HALOGENATED  VOLATILES
                                                       INORGANIC  CORROSIVES
                                                       NONHALOGENATED  NONVOLATILES
                                                       NONHALOGENATED  VOLATILES
                                                       NONVOLATILE  METALS
                                                       ORGANIC  CORROSIVES
                                                       OXIDIZERS
                                                       PCBs
                                                       PESTICIDES.
                                                       REDUCERS
                                                       VOLATILE METALS
                                                                                            NO
          NO
                                BIOSCIENCE  MANAGEMENT,  INC.
                                     ORGANIC LIQUID
                                                      DIOXINS/FURANS
                                                      HALOGENATED NONVOLATILES
                                                      HALOGENATED VOLATILES
                                                      INORGANIC CYANIDES
                                                      NONHALOGENATED NONVOLATILES
                                                      NONHALOGENATED VOLATILES
                                                      ORGANIC CORROSIVES
                                                      ORGANIC CYANIDES
                                                      PCBS
YES
          YES
                                C-EE  BIOREMEDIATION SYSTEMS
                                                                     AQUEOUS MEDIA
                                                                     ORGANIC LIQUID
                                                      HALOGENATED NONVOLATILES
                                                      HALOGENATED VOLATILES
                                                      NONHALOGENATED NONVOLATILES
                                                      NONHALOGENATED VOLATILES
                                                      PCBs
                                                      PESTICIDES
YES
          NO
                               C-EE BIOREMEDIATION SYSTEMS
                                                                     AQUEOUS MEDIA
                                                                     ORGANIC LIQUID
                                                      HALOGENATED NONVOLATILES
                                                      HALOGENATED VOLATILES
YES
          NO

-------
TREATMENT TECHNOLOGY
                       TABLE # 2 (CONTINUED)

      COMPANY NAME                    MEDIA TREATED       CONTAMINANT  GROUPS
                                                                                                                            BENCH     PILOT
                                                                                                                            SCALE     SCALE
NEUTRALIZATION
(continued)
C-EE BIOREMEDIATION SYSTEMS
(continued)
                                CHEMENCO,  INC.
                                DIVERSIFIED  ENGINEERING,  INC.
                                      AQUEOUS MEDIA
                                      ORGANIC LIQUID

                                      AQUEOUS MEDIA
                                      ORGANIC LIQUID
                                E  M &  C  ENGINEERING ASSOCIATES
                                                                      AQUEOUS  MEDIA
                                                                      ORGANIC  LIQUID
NONHALOGENATED NONVOLATILES
NONHALOGENATED VOLATILES
PCBs
PESTICIDES

NOT SPECIFIED
INORGANIC CORROSIVES
INORGANIC CYANIDES
NONVOLATILE METALS
ORGANIC CYANIDES
REDUCERS
HALOGENATED NONVOLATILES
NONHALOGENATED NONVOLATILES
ORGANIC CORROSIVES
OXIDIZERS

DIOXINS/FURANS
HALOGENATED NONVOLATILES
HALOGENATED VOLATILES
INORGANIC CORROSIVES
INORGANIC CYANIDES
NONVOLATILE METALS
ORGANIC CYANIDES
OXIDIZERS
PCGs
PESTICIDES
REDUCERS
VOLATILE METALS
                                                                                                                            YES       NO
                                     YES       YES
                                                                                            INP       INP
                                EARTH  TECHNOLOGY  CORP.
                                                                     AQUEOUS  MEDIA    NOT  SPECIFIED
                                                                     ORGANIC  LIQUID
                                                                                                                            YES       NO
                                ENSOTECH,  INC.
                                      ORGANIC LIQUID   HALOGENATED  NONVOLATILES
                                                                                            YES       YES

-------
TREATMENT TECHNOLOGY
                       TABLE # 2 (CONTINUED)

      COMPANY NAME                    MEDIA TREATED       CONTAMINANT GROUPS
                                                                                                                            BENCH
                                                                                                                            SCALE
                                                                                                      PILOT
                                                                                                      SCALE
NEUTRALIZATION
(continued)
ENSOTECH,  INC.
(continued)
                                                                      AQUEOUS MEDIA
                                ENVIRONMENTAL RESOURCE ASSOCIATES
                                                                      AQUEOUS MEDIA
                                ENVIRONMENTAL  TECHNOLOGY  SOUTHEAST     AQUEOUS MEDIA
                                ENWRIGHT  ENVIRONMENTAL,  INC.
                                FRANCIS A. MCLOUGHLIN
                                GENERAL PHYSICS CORPORATION
                                     AQUEOUS MEDIA
                                     ORGANIC LIQUID

                                     SLUDGES

                                     AQUEOUS MEDIA
                                     ORGANIC LIQUID
 HALOGENATED  VOLATILES
 INORGANIC CORROSIVES
 INORGANIC CYANIDES
 NONHALOGENATED  NONVOLATILES
 NONHALOGENATED  VOLATILES
 NONVOLATILE  METALS
 OXIDIZERS
 REDUCERS

 HALOGENATED  NONVOLATILES
 HALOGENATED  VOLATILES
 INORGANIC CORROSIVES
 NONHALOGENATED  NONVOLATILES
 NONHALOGENATED  VOLATILES
 NONVOLATILE  METALS

 HALOGENATED  NONVOLATILES
 HALOGENATED  VOLATILES
 NONHALOGENATED  NONVOLATILES
 NONHALOGENATED  VOLATILES
 NONVOLATILE  METALS

 RADIOACTIVE  MATERIALS
VOLATILE METALS

NONVOLATILE METALS
ORGANIC CORROSIVES
ORGANIC CYANIDES
OXIDIZERS
REDUCERS
VOLATILE METALS
                                                                                                                            YES       YES
                                                                                                                            INP        INP
YES       YES


INP       INP

YES       YES
                                HARMON ENVIRONMENTAL SERVICES, INC.   SLUDGES
                                                      NOT SPECIFIED
                                                                                           YES       YES

-------
TREATMENT TECHNOLOGY
                 TABLE # 2 (CONTINUED)

COMPANY NAME                    MEDIA TREATED
                                                                                          CONTAMINANT  GROUPS
                                     BENCH
                                     SCALE
PILOT
SCALE
NEUTRALIZATION
(continued)
                                HUNTER SERVICES,  INC.
                                AQUEOUS MEDIA
                                ORGANIC LIQUID
HALOGENATED NONVOLATILES
HALOGENATED VOLATILES
NONHALOGENATED NONVOLATILES
NONHALOGENATED VOLATILES
OXIDIZERS
REDUCERS
                                                                                                                           YES
                                                                                                                                     YES
                                INTERNATIONAL  PROCESS  RESEARCH CORP
                                AQUEOUS MEDIA
                                ORGANIC LIQUID
HALOGENATED NONVOLATILES
HALOGENATED VOLATILES
INORGANIC CORROSIVES
INORGANIC CYANIDES
NONHALOGENATED VOALTILES
NONVOLATILE METALS
ORGANIC CORROSIVES
ORGANIC CYANIDES
OXIDIZERS
REDUCERS
                                                                                                                            YES        YES
                                IT CORPORATION
                                AQUEOUS MEDIA    ORGANIC CORROSIVES
                                                 INORGANIC CORROSIVES
                                                                                                                            YES       YES
                                MAECORP,  INC.
                                AQUEOUS MEDIA    NOT SPECIFIED
                                ORGANIC LIQUID
                                SOILS
                                SLUDGES
                                                                                                                            YES       YES
                                MARINE POLUTION  CONTROL
                                AQUEOUS MEDIA    NONHALOGENATED VOLATILES
                                SOILS            PCBs
                                                                                                                            IMP       INP
                                MCNAMEE ADVANCED  TECHNOLOGY,  INC.
                                AQUEOUS MEDIA    INORGANIC CORROSIVES
                                                 ORGANIC CORROSIVES
                                                                                                                            YES       YES
                                O'BRIEN AND  GERE  ENGINEERS,  INC.
                                AQUEOUS MEDIA    INORGANIC CORROSIVES
                                ORGANIC LIQUID
                                                                                                                            YES       YES

-------
TREATMENT TECHNOLOGY
                 TABLE # 2 (CONTINUED)

COMPANY NAME                    MEDIA TREATED
   CONTAMINANT GROUPS
BENCH
SCALE
PILOT
SCALE
NEUTRALIZATION
(continued)
                                OHM CORPORATION
                                AQUEOUS MEDIA
                                ORGANIC LIQUID
                                SLUDGES
VOLATILE METALS
HALOGENATED NONVOLATILES
PESTICIDES
NONHALOGENATED NONVOLATILES
NONVOLATILE METALS
                                                                                                                            YES
                                                                                                                                      YES
                                RIVER OAK ASSOCIATES
                                                                      AQUEOUS  MEDIA
                                                                      ORGANIC  LIQUID
                                                 INORGANIC CORROSIVES
                                                 INORGANIC CYANIDES
                                                 NONHALOGENATED NONVOLATILES
                                                 NONVOLATILE METALS
                                                 OXIDIZERS
                                                 RADIOACTIVE MATERIALS
                                                 REDUCERS
                                                 VOLATILE METALS
                                                                                                                           YES        NO
                                RIVER OAK ASSOCIATES
                               AQUEOUS MEDIA
                               ORGANIC LIQUID
INORGANIC CORROSIVES
INORGANIC CYANIDES
NONHALOGENATED NONVOLATILES
NONVOLATILE METALS
OXIDIZERS
RADIOACTIVE MATERIALS
REDUCERS
VOLATILE METALS
                                                                                                                           YES       NO
                                RMT,  INC.
                               AQUEOUS MEDIA
                               ORGANIC LIQUID
                               SEDIMENTS
                               SLUDGES
                               SOILS
INORGANIC CORROSIVES
ORGANIC CORROSIVES
                                                                                                                           YES       YES
                                RNK ENVIRONMENTAL,  INC.
                               AQUEOUS MEDIA
                               ORGANIC LIQUID
ORGANIC CORROSIVES
INORGANIC CORROSIVES
                                                                                                                           YES       YES
                                ROY F.  WESTON,  INC.
                                                                     AQUEOUS MEDIA
                                                                                      PESTICIDES
                                                                                                                           YES       YES

-------
 TREATMENT  TECHNOLOGY
                       TABLE # 2 (CONTINUED)

      COMPANY NAME                    MEDIA TREATED       CONTAMINANT GROUPS
                                                                                                                            BENCH     PILOT
                                                                                                                            SCALE     SCALE
NEUTRALIZATION
(continued)
ROY F.  WESTON,  INC.
(continued)
ORGANIC LIQUID
DIOXINS/FURANS
NONVOLATILE METALS
INORGANIC CYANIDES
ORGANIC CYANIDES
INORGANIC CORROSIVES
ORGANIC CORROSIVES
HALOGENATED VOLATILES
HALOGENATED NONVOLATILES
NONHALOGENATED VOLATILES
NONHALOGENATED NONVOLATILES
PCBs
                                VERSAR INC.
                                                                      AQUEOUS MEDIA
                                                                                        INORGANIC CORROSIVES
                                                                                        ORGANIC CORROSIVES
                                                                                                                            YES       YES
                                WESTERN RESEARCH INSTITUTE
                                                                      AQUEOUS MEDIA
                                                                      ORGANIC LIQUID
                                                                      SLUDGES
                                                                      SOILS
                                                       INORGANIC CYANIDES
                                                       NONHALOGENATED NONVOLATILES
                                                       NONHALOGENATED VOLATILES
                                                       NONVOLATILE METALS
                                                       ORGANIC CYANIDES
                                                       RADIOACTIVE METERIALS
                                                                                                                            YES        INP
                                WOODWARD CLYDE CONSULTANTS
                                                                      AQUEOUS MEDIA    NOT SPECIFIED
                                                                      ORGANIC LIQUID
                                                                                                                            YES
                                                                                                                                      YES
                                YEC INC
                                                                      NOT SPECIFIED    NOT SPECIFIED
                                                                                                                            YES
                                                                                                                                      YES
OIL-WATER SEPARATION
                                DIVERSIFIED ENGINEERING, INC.
                                      AQUEOUS MEDIA
                 NONHALOGENATED NONVOLATILES
                 NONHALOGENATED VOLATILES
                                                                                                                            YES
                                                                                                                                      YES
                                OHM CORPORATION
                                                                      AQUEOUS MEDIA
                                                                      ORGANIC LIQUID
                                                                      SLUDGES
                                                       VOLATILE METALS
                                                       HALOGENATED NONVOLATILES
                                                       HALOGENATED VOLATILES
                                                       NONHALOGENATED VOLATILES
                                                                                                                             YES
                                                                                                                                      YES

-------
TREATMENT TECHNOLOGY
                                      COMPANY NAME
                       TABLE # Z (CONTINUED)

                                      MEDIA TREATED
                                                                                          CONTAMINANT GROUPS
                                                                                                                            BENCH     PILOT
                                                                                                                            SCALE     SCALE
OIL-WATER SEPARATION
(continued)
OHM CORPORATION
(continued)
                                                                                       NONVOLATILE METALS
                                                                                       NONHALOGENATED NONVOLATILES
                                                                                       PCBs
                                                                                       PESTICIDES
OZONATION
                                APPLIED SURFACE TECHNOLOGY
                                                                      AQUEOUS MEDIA
                                                                      ORGANIC LIQUIDS
                                                                      SLUDGES
                                                                      SOILS
                                                       INORGANIC  CORROSIVES
                                                       OXIDIZERS
                                                       HALOGENATED NONVOLATILES
                                                       HALOGENATED VOLATILES
                                                       NONVOLATILE METALS
                                                       ORGANIC CYANIDES
                                                       INORGANIC  CYANIDES
                                     YES       YES
                                CHEMENCO,  INC.
                                     AQUEOUS MEDIA
                                     ORGANIC LIQUID
                                                      NOT SPECIFIED
                                     YES       NO
                                DETOX.  INC.
                                     AQUEOUS MEDIA
                                     ORGANIC LIQUID
                                     SEDIMENTS
                                     SLUDGES
                                     SOILS
HALOGENATED VOLATILES
HALOGENATED NONVOLATILES
NONHALOGENATED VOLATILES
NONHALOGENATED NONVOLATILES
PESTICIDES
DIOXINS/FURANS
ORGANIC CYANIDES
ORGANIC CORROSIVES
VOLATILE METALS
NONVOLATILE METALS
YES       YES
                                E M & C  ENGINEERING ASSOCIATES
                                                                     AQUEOUS MEDIA
                                                                     ORGANIC LIQUID
                                                      DIOXINS/FURANS
                                                      HALOGENATED NONVOLATILES
                                                      HALOGENATED VOLATILES
                                                      INORGANIC CORROSIVES
                                                      INORGANIC CYANIDES
                                                      NONVOLATILE METALS
                                                      ORGANIC CYANIDES
                                     INP       INP

-------
TREATMENT TECHNOLOGY
                       TABLE # 2 (CONTINUED)

      COMPANY NAME                    MEDIA TREATED        CONTAMINANT  GROUPS
                                                                                                                            BENCH      PILOT
                                                                                                                            SCALE      SCALE
OZONATION
(continued)
E M & C ENGINEERING ASSOCIATES
(continued)
                                EARTH TECHNOLOGY CORP.
                                ENWRIGHT ENVIRONMENTAL,  INC.
                                GENERAL PHYSICS CORPORATION
                                      AQUEOUS  MEDIA
                                      ORGANIC  LIQUID

                                      AQUEOUS  MEDIA
                                      ORGANIC  LIQUID

                                      AQUEOUS  MEDIA
                                      ORGANIC  LIQUID
                                HUNTER SERVICES,  INC.
                                      AQUEOUS  MEDIA
                                      ORGANIC  LIQUID
OX1DI2ERS
PCBs
PESTICIDES
REDUCERS
VOLATILE METALS

NOT SPECIFIED
RADIOACTIVE MATERIALS
HALOGENATED NONVOLATILES
HALOGENATED VOLATILES
INORGANIC CORROSIVES
INORGANIC CYANIDES
NONHALOGENATED NONVOLATILES
NONHALOGENATED VOLATILES
NONVOLATILE METALS
ORGANIC CORROSIVES
ORGANIC CYANIDES
OXIDIZERS
REDUCERS

DIOXINS/FURANS
HALOGENATED NONVOLATILES
HALOGENATED VOLATILES
NONHALOGENATED NONVOLATILES
NONHALOGENATED VOLATILES
ORGANIC CORROSIVES
ORGANIC CYANIDES
OXIDIZERS
REDUCERS
                                                                                                                            YES       NO
                                     YES       NO
                                                                                                                            YES       YES
                                                                                            YES        YES
                                I IT RESEARCH  INST
                                                                      AQUEOUS  MEDIA
                                                                                       PESTICIDES
                                                                                                                            YES       YES

-------
TREATMENT TECHNOLOGY
                       TABLE # 2 (CONTINUED)

      COMPANY NAME                     MEDIA TREATED        CONTAMINANT GROUPS
                                                                                                                            BENCH     PILOT
                                                                                                                            SCALE     SCALE
OZONATION
(continued)
I IT RESEARCH INST
(continued)
ORGANIC CORROSIVES
HALOGENATED VOLATILES
                                INTERNATIONAL PROCESS RESEARCH CORP
                                                                      AQUEOUS MEDIA
                                                                      ORGANIC LIQUID
                                                       HALOGENATED  NONVOLATILES
                                                       HALOGENATED  VOLATILES
                                                       INORGANIC  CORROSIVES
                                                       INORGANIC  CYANIDES
                                                       NONHALOGENATED VOLATILES
                                                       NONVOLATILE  METALS
                                                       ORGANIC OCRROSIVES
                                                       ORGANIC CYANIDES
                                                       OXIDIZERS
                                                       REDUCERS
                                                                                                                            YES       YES
                                KEYSTONE ENVIRONMENTAL RESOURCES
                                     AQUEOUS MEDIA
                                                                                       NONHALOGENATED NONVOLATILES
                                                                                       HALOGENATED NONVOLATILES
                                                                                       HALOGENATED VOLATILES
                                                                                       NONHALOGENATED VOLATILES
                                                                                       INORGANIC CYANIDES
                                                                                       DIOXINS/FURANS
                                                                                       PESTICIDES
                                     YES       YES
                                MCNAMEE ADVANCED TECHNOLOGY,  INC.
                                     AQUEOUS MEDIA
INORGANIC CYANIDES
ORGANIC CYANIDES
                                                                                           YES       YES
                                O'BRIEN AND GERE ENGINEERS,  INC.
                                     AQUEOUS MEDIA
                                     ORGANIC LIQUID
INORGANIC CORROSIVES
INORGANIC CYANIDES
NONHALOGENATED NONVOLATILES
ORGANIC CYANIDES
REDUCERS
                                                                                           YES       YES
                                RADIAN CORPORATION
                                                                      AQUEOUS  MEDIA
                                                                      ORGANIC  LIQUID
                                                      HALOGENATED NONVOLATILES
                                                      HALOGENATED VOLATILES
                                                      NONHALOGENATED NONVOLATILES
                                                      NONHALOGENATED VOLATILES
                                                                                                                            YES        YES

-------
TREATMENT TECHNOLOGY
                       TABLE  # 2 (CONTINUED)

      COMPANY NAME                     MEDIA TREATED        CONTAMINANT  GROUPS
                                                                                                                            BENCH     PILOT
                                                                                                                            SCALE     SCALE
OZONATION
(continued)
RADIAN CORPORATION
(continued)
                                                                                       NONVOLATILE  METALS
                                                                                       ORGANIC  CORROSIVES
                                                                                       ORGANIC  CYANIDES
                                                                                       OXIDIZERS
                                                                                       PCBs
                                                                                       PESTICIDES
                                                                                       REDUCERS
                                                                                       VOLATILE METALS
                                REMEDIATION  TECHNOLOGIES
                                                                      AQUEOUS MEDIA
                                                                      ORGANIC LIQUID
                                                       HALOGENATED VOLATILE
                                                       NONHALOGENATED VOLATILES
                                                                                                                            YES        YES
                                RIVER OAK  ASSOCIATES
                                                                      AQUEOUS MEDIA
                                                                      ORGANIC LIQUID
                                                       HALOGENATED NONVOLATILES
                                                       HALOGENATED VOLATILES
                                                       INORGANIC  CORROSIVES
                                                       INORGANIC  CYANIDES
                                                       NONHALOGENATED  NONVOLATILES
                                                       NONVOLATILE METALS
                                                       OXIDIZERS
                                                       RADIOACTIVE MATERIALS
                                                       VOLATILE METALS
                                                                                                                            YES        NO
                                RMT,  INC.
                                      AQUEOUS  MEDIA
                                      ORGANIC  LIQUID
HALOGENATED VOLATILES
INORGANIC CYANIDES
REDUCERS
HALOGENATED NONVOLATILES
ORGANIC CYANIDES
                                                                                                                            YES        YES
                                ROY  F. WESTON.  INC.
                                     AQUEOUS  MEDIA
                                     ORGANIC  LIQUID
PESTICIDES
DIOXINS/FURANS
NONVOLATILE METALS
INORGANIC CYANIDES
ORGANIC CYANIDES
INORGANIC CORROSIVES
ORGANIC CORROSIVES
                                                                                            YES        NO

-------
TREATMENT TECHNOLOGY
                       TABLE # 2 (CONTINUED)

      COMPANY NAME                    MEDIA TREATED       CONTAMINANT GROUPS
                                                                                                                            BENCH     PILOT
                                                                                                                            SCALE     SCALE
OZONATION
(continued)
ROY F. WESTON, INC.
(continued)
                                                                                       HALOGENATED VOLATILES
                                                                                       HALOGENATED NONVOLATILES
                                                                                       NONHALOGENATED VOLATILES
                                                                                       NONHALOGENATED NONVOLATILES
                                                                                       PCBs
                                WESTERN RESEARCH INSTITUTE
                                                                      AQUEOUS MEDIA
                                                                      ORGANIC LIQUID
                                                       INORGANIC CYANIDES
                                                       NONHALOGENATED  NONVOLATILES
                                                                                                                            INP       INP
                                YEC  INC
                                                                      NOT SPECIFIED
                                                                                       NOT SPECIFIED
                                                                                                                            YES       YES
PACT
                                MCNAMEE ADVANCED TECHNOLOGY, INC.
                                      AQUEOUS MEDIA
                                                       HALOGENATED  NONVOLATILES
                                                       HALOGENATED  VOLATILES
                                                       ORGANIC CYANIDES
                                                       INORGANIC  CYANIDES
                                                       NONHALOGENATED  NONVOLATILES
                                                       NONHALOGENATED  VOLATILES
                                                       NONVOLATILE  HETALS
                                                                                            YES       YES
                                VERSAR INC.
                                                                      AQUEOUS MEDIA
                                                                                       HALOGENATED NONVOLATILES
                                                                                       HALOGENATED VOLATILES
                                                                                       NONHALOGENATED NONVOLATILES
                                                                                       NONHALOGENATED VOLATILES
                                                                                       INORGANIC CYANIDES
                                                                                       ORGANIC CYANIDES
                                                                                       DIOXINS/FURANS
                                                                                                                            YES       NO
PERVAPORATION
                                MEMBRANE TECHNOLOGY & RESEARCH, INC
                                     AQUEOUS  MEDIA
                                     ORGANIC  LIQUID
NONHALOGENATED VOLATILES
HALOGENATED VOLATILES
                                                                                            YES        YES
PHYSICAL SEPARATION
                                AWC INCORPORATED
                                                                      SOILS
                                                                                       NONVOLATILE METALS
                                                                                       RADIOACTIVE MATERIALS
                                                                                                                            YES
                                                                                                                                      NO

-------
TREATMENT TECHNOLOGY
                                                       TABLE # 2 (CONTINUED)

                                      COMPANY NAME                    MEDIA TREATED
                                                          CONTAMINANT  GROUPS
                                                      BENCH
                                                      SCALE
                                              PILOT
                                              SCALE
PHYSICAL SEPARATION
(continued)
                                JACOBS ENGINEERING GROUP, INC.
                                PITTSBURGH MIN&ENV.TECH., INC.
                                      AQUEOUS MEDIA
                                      ORGANIC LIQUID
                                      SEDIMENTS
                                      SLUDGES
                                      SOILS

                                      SOILS
                                      OTHER SOLIDS
                 INORGANIC CORROSIVES
                 NONVOLATILE METALS
                 ORGANIC CORROSIVES
                 VOLATILE METALS
                 NONVOLATILE METALS
                 VOLATILE METALS
                                                                                                                            YES
                                                                                                                                      NO
                                                                                                                            YES       YES
PHYSICAL TREATMENT-NOS
ROY F. WESTON, INC.
                                                                      NOT SPECIFIED
                 HALOGENATED VOLATILES
                 NONHALOGENATED VOLATILES
                 NONVOLATILE METALS
                 VOLATILE METALS
                                                                                                                            YES       YES
RESIN ADSORPTION
DIVERSIFIED ENGINEERING, INC.
AQUEOUS MEDIA
ORGANIC LIQUID
HALOGENATED VOLATILES
HALOGENATED NONVOLATILES
NONHALOGENATED VOLATILES
NONHALOGENATED NONVOLATILES
RADIOACTIVE MATERIALS
                                                                                                                            YES       YES
REVERSE OSMOSIS
                                APPLIED SURFACE TECHNOLOGY
                                      AQUEOUS MEDIA
                                      ORGANIC LIQUIDS
                                      SLUDGES
                                      SOILS
                  INORGANIC CORROSIVES
                  OXID1ZERS
                  HALOGENATED NONVOLATILES
                  HALOGENATED VOLATILES
                  NONVOLATILE METALS
                  ORGANIC CYANIDES
                  INORGANIC CYANIDES
                                                                                                                            YES       YES
                                CHEMENCO,  INC.
                                      AQUEOUS MEDIA
                                      ORGANIC LIQUID
                                                                                        NOT  SPECIFIED
                                                                                                                             YES       NO

-------
TREATMENT TECHNOLOGY
                       TABLE # 2 (CONTINUED)

      COMPANY NAME                    MEDIA TREATED        CONTAMINANT  GROUPS
                                                                                                                            BENCH
                                                                                                                            SCALE
                                                PILOT
                                                SCALE
REVERSE OSMOSIS
(continued)
E M & C ENGINEERING ASSOCIATES
                                                                      AQUEOUS MEDIA
                                                                      ORGANIC LIQUID
                                                      DIOXINS/FURANS
                                                      HALOGENATED  NONVOLATILES
                                                      HALOGENATED  VOLATILES
                                                      INORGANIC  CORROSIVES
                                                      INORGANIC  CYANIDES
                                                      NONVOLATILE  METALS
                                                      ORGANIC CYANIDES
                                                      OXIDIZERS
                                                      PCBs
                                                      PESTICIDES
                                                      REDUCERS
                                                      VOLATILE METALS
                                                                                                                            INP
                                                                                                                                      INP
                                EARTH TECHNOLOGY  CORP.
                                                                      AQUEOUS MEDIA    NOT SPECIFIED
                                                                      ORGANIC LIQUID
                                                                                                                           YES
                                                                                                                                      NO
                                GROUNDUATER & ENVIRONMENTAL SERVICE    AQUEOUS MEDIA
                                                                      SEDIMENTS
                                                                      SLUDGES
                                                                      SOILS
                                                      NOT SPECIFIED
                                                                                           YES
                                                                                                      INP
                                IT  CORPORATION
                                                                     AQUEOUS MEDIA
                                                                                      HALOGENATED NONVOLATILES
                                                                                      NONHALOGENATED NONVOLATILES
                                                                                      NONVOLATILE METALS
                                                                                      RADIOACTIVE MATERIALS
                                                                                                                           YES
                                                                                                                                     NO
                                KEYSTONE ENVIRONMENTAL RESOURCES
                                                                     AQUEOUS MEDIA
                                                                                      NONVOLATILE METALS
                                                                                      VOLATILE METALS
                                                                                      INORGANIC CYANIDES
                                                                                                                           NO
                                                                                                                                     YES
                                KSE,  INC.
                                     AQUEOUS MEDIA
                                     ORGANIC LIQUID
HALOGENATED VOLATILES
NONHALOGENATED VOLATILES
NONVOLATILE METALS
VOALTILE METALS
                                                                                           YES
                                                                                                     YES

-------
                       TABLE # 2 (CONTINUED)
TREATMENT TECHNOLOGY COMPANY NAME
REVERSE OSMOSIS MAECORP, INC.
(continued)
MEDIA TREATED
AQUEOUS MEDIA
ORGANIC LIQUID
CONTAMINANT GROUPS
NONVOLATILE METALS
VOLATILE METALS
BENCH
SCALE
YES
PILOT
SCALE
YES
HCNAMEE ADVANCED  TECHNOLOGY,  INC.

RADIAN CORPORATION
RIVER OAK ASSOCIATES
RMT, INC.
                                                       HALOGENATED  VOLATILES
                                                       NONHALOGENATED  VOLATILES
                                      AQUEOUS MEDIA    NOT SPECIFIED
AQUEOUS MEDIA
ORGANIC LIQUID
AQUEOUS MEDIA
ORGANIC LIQUID
                                      AQUEOUS MEDIA
HALOGENATED NONVOLATILES
HALOGENATED VOLATILES
NONHALOGENATED NONVOLATILES
NONHALOGENATED VOLATILES
NONVOLATILE METALS
ORGANIC CORROSIVES
ORGANIC CYANIDES
OXIDIZERS
PCBs
PESTICIDES
REDUCERS
VOLATILE METALS

HALOGENATED VOLATILES
HALOGENATED NONVOLATILES
NONHALOGENATED NONVOLATILES

VOLATILE METALS
INORGANIC CORROSIVES
OXIDIZERS
NONVOLATILE METALS
INORGANIC CYANIDES
REDUCERS
                                                      YES       YES

                                                      YES       YES
                                                                                            YES       NO
                                                                                            YES       YES
RNK ENVIRONMENTAL,  INC.
AQUEOUS MEDIA    NONVOLATILE METALS
ORGANIC LIQUID
                                                                                            YES       YES
VERSAR INC.
                                      AQUEOUS MEDIA    NONVOLATILE METALS
                                                                                            YES       NO

-------
TREATMENT TECHNOLOGY
                       TABLE # 2 (CONTINUED)

      COMPANY NAME                    MEDIA TREATED       CONTAMINANT GROUPS
                                                                                                                            BENCH     PILOT
                                                                                                                            SCALE     SCALE
REVERSE OSMOSIS
(continued)
VERSAR INC.
(continued)
ORGANIC CYANIDES
VOLATILE METALS
                                WESTERN RESEARCH INSTITUTE
                                                                      AQUEOUS MEDIA
                                                                      ORGANIC LIQUID
                                                       INORGANIC CYANIDES
                                                       NONHALOGENATED NONVOLATILES
                                                       NONHALOGENATED VOLATILES
                                                       NONVOLATILE METALS
                                                       ORGANIC CYANIDES
                                                                                                                            YES
                                                                                                                                      YES
                                ZENON ENVIRONMENTAL
                                                                      AQUEOUS MEDIA
                                                                      ORGANIC LIQUID
                                                       DIOXINS/FURANS
                                                       HALOGENATED  NONVOLATILES
                                                       HALOGENATED  VOLATILES
                                                       INORGANIC CORROSIVES
                                                       INORGANIC CYANIDES
                                                       NONHALOGENATED NONVOLATILES
                                                       NONHALOGENATED VOLATILES
                                                       PCBs
                                                       PESTICIDES
                                                       NONVOLATILES METALS
                                                       ORGANIC  CORROSIVES
                                                       ORGANIC  CYANIDES
                                                                                                                            YES
                                                                                                                                      YES
SEDIMENTATION
                                DIVERSIFIED ENGINEERING,  INC.
                                      AQUEOUS  MEDIA
                                      ORGANIC  LIQUID
HALOGENATED NONVOLATILES
NONVOLATILE METALS
RADIOACTIVE MATERIALS
NONHALOGENATED NONVOLATILES
ORGANIC CYANIDES
                                                                                                                            YES       YES
                                MAECORP, INC.
                                     AQUEOUS  MEDIA
                                     ORGANIC  LIQUID
                                                                                       NOT SPECIFIED
                                                                                                                            YES       YES
                                ROY F. WESTON, INC.
                                     AQUEOUS  MEDIA
                                     ORGANIC  LIQUID
PESTICIDES
DIOXINS/FURANS
NONVOLATILE METALS
                                                                                                                            YES       YES

-------
TREATMENT TECHNOLOGY
                                                       TABLE # 2 (CONTINUED)

                                      COMPANY NAME                    MEDIA TREATED
                                                          CONTAMINANT GROUPS
                                     BENCH     PILOT
                                     SCALE     SCALE
SEDIMENTATION
(continued)
ROY F. WESTON,  INC.
(continued)
INORGANIC CYANIDES
ORGANIC CYANIDES
INORGANIC CORROSIVES
ORGANIC CORROSIVES
HALOGENATED VOLATILES
HALOGENATED NONVOLATILES
NONHALOGENATED VOLATILES
NONHALOGENATED NONVOLATILES
PCBs
SOIL WASHING
                                APPLIED SURFACE TECHNOLOGY
                                BIOTROL, INC.
                                C-EE BIOREMEDIATION SYSTEMS
                                CHEMENCO, INC.
                                      AQUEOUS MEDIA
                                      ORGANIC LIQUIDS
                                      SLUDGES
                                      SOILS
                                                                      SOILS
INORGANIC CORROSIVES
OXIDIZERS
HALOGENATED NONVOLATILES
HALOGENATED VOLATILES
NONVOLATILE METALS
ORGANIC CYANIDES
INORGANIC CYANIDES

HALOGENATED VOLATILES
NONHALOGENATED VOLATILES
NONVOLATILE METALS
                                      SEDIMENTS        HALOGENATED NONVOLATILES
                                      SLUDGES          HALOGENATED VOLATILES
                                      SOILS            NONHALOGENATED VOLATILES
                                                       NONHALOGENATED NONVOLATILES
                                                       PCBs
                                                       PESTICIDES
                                                                                                                            YES       YES
                                      SOILS
                                      SLUDGES
                                      SEDIMENTS
                                      OTHER SOLIDS
                                                                                        NOT  SPECIFIED
                                                                                                                             YES       YES
                                                                                                                             YES       NO
                                                                                                                             YES       NO

-------
                       TABLE # 2 (CONTINUED)
TREATMENT TECHNOLOGY

SOIL WASHING
(continued)



COMPANY NAME MEDIA TREATED

CYTO CULTURE ENVIRON. BIOTECH.
SEDIMENTS
SLUDGES
SOILS

CONTAMINANT GROUPS

NONHALOGENATED VOLATILES
ORGANIC CYANIDES
PCBs
PESTICIDES
BENCH PILOT
SCALE SCALE
YES YES



DETOX, INC.
AQUEOUS MEDIA
ORGANIC LIQUID
SEDIMENTS
SLUDGES
SOILS
HALOGENATED VOLATILES
HALOGENATED NONVOLATILES
NONHALOGENATED VOLATILES
NONHALOGENATED NONVOLATILES
PESTICIDES
DIOXINS/FURANS
ORGANIC CYANIDES
ORGANIC CORROSIVES
VOLATILE METALS
NONVOLATILE METALS
                                                      YES       YES
EARTH TECHNOLOGY CORP.
                                      SOILS            NONVOLATILE METALS
                                      SEDIMENTS        NONHALOGENATED VOLATILES
                                      SLUDGES          VOLATILE METALS
                                                       ORGANIC CORROSIVES
                                                       HALOGENATED VOLATILES
                                                       NONHALOGENATED NONVOLATILES
                                                       INORGANIC CORROSIVES
                                                                                            YES
                                                                                                      NO
ENSOTECH,  INC.
OTHER SOLIDS     HALOGENATED NONVOLATILES
SEDIMENTS        HALOGENATED VOLATILES
SLUDGES          INORGANIC CORROSIVES
SOILS            INORGANIC CYANIDES
                 NONHALOGENATED NONVOLATILES
                 NONHALOGENATED VOLATILES
                 NONVOLATILE METALS
                 OXIDIZERS
                 REDUCERS
                                     YES       YES
ENVIRONMENTAL  REMEDIATION,  INC.
AQUEOUS MEDIA
HALOGENATED VOLATILES
                                                      YES
                                                                NO

-------
TREATMENT TECHNOLOGY
                       TABLE # 2 (CONTINUED)

      COMPANY NAME                    MEDIA TREATED
                                                                                          CONTAMINANT GROUPS
                                                      BENCH     PILOT
                                                      SCALE     SCALE
SOIL WASHING
(continued)
ENVIRONMENTAL REMEDIATION,  INC.
(continued)
ORGANIC LIQUID
SEDIMENTS
SLUDGES
SOILS
                                ENVIRONMENTAL TECHNOLOGY SOUTHEAST    SEDIMENTS
                                                                      SLUDGES
                                                                      SOILS
                                ENVIROTECH MID-ATLANTIC
NONHALOGENATED VOLATILES
PCBs
PESTICIDES
                                                       HALOGENATED NONVOLATILES
                                                       HALOGENATED VOLATILES
                                                       NONHALOGENATED NONVOLATILES
                                                       NONHALOGENATED VOLATILES
                                                       NONVOLATILE METALS
                                      SEDIMENTS        HALOGENATED NONVOLATILES
                                      SLUDGES          HALOGENATED VOLATILES
                                      SOILS            NONHALOGENATED NONVOLATILES
                                                       NONHALOGENATED VOLATILES
                                                       NONVOLATILE METALS
                                GROUNDWATER & ENVIRONMENTAL SERVICE   AQUEOUS MEDIA
                                                                      SEDIMENTS
                                                                      SLUDGES
                                                                      SOILS

                                HARMON ENVIRONMENTAL SERVICES, INC.   SOILS

                                I IT RESEARCH INST                     SLUDGES
                                                                      OTHER SOLIDS
                                                                      SOILS
                                                                                       NOT SPECIFIED
                                I IT RESEARCH INST
                                      SLUDGES
                                      OTHER SOLIDS
                                      SOILS
                                INTERNATIONAL PROCESS RESEARCH CORP   SOILS
                                                       PCBs
                                                       NONVOLATILE METALS
                                                                                       NONVOLATILE METALS
                                                       HALOGENATED NONVOLATILES
                                                       HALOGENATED VOLATILES
                                                       INORGANIC CORROSIVES
                                                                                                                            INP       INP
                                                                                                                            YES       YES
                                                                                                                            INP
                                                                                                                                      INP
                                                      YES

                                                      YES



                                                      YES



                                                      YES
                                               YES

                                               INP



                                               INP



                                               YES

-------
TREATMENT TECHNOLOGY
                       TABLE  # 2 (CONTINUED)

      COMPANY NAME                    MEDIA TREATED
                                                                                          CONTAMINANT GROUPS
                                                      BENCH     PILOT
                                                      SCALE     SCALE
SOIL WASHING
(continued)
INTERNATIONAL PROCESS RESEARCH  CORP
(continued)
                                                                                       INORGANIC CYANIDES
                                                                                       NONHALOGENATED VOLATILES
                                                                                       NONVOLATILE METALS
                                                                                       ORGANIC CORROSIVES
                                                                                       ORGANIC CYANIDES
                                                                                       OXIDIZERS
                                                                                       REDUCERS
                                IT CORPORATION
                                                                      SOILS
                                                                                       DIOXINS/FURANS
                                                                                       NONVOLATILE METALS
                                                                                                                            YES       NO
                                KEYSTONE ENVIRONMENTAL RESOURCES
                                                                      SOILS            NONHALOGENATEO NONVOLATILES
                                                                      SEDIMENTS        HALOGENATED NONVOLATILES
                                                                                       PCBs
                                                                                       NONVOLATILE METALS
                                                                                                                            YES       YES
                                O'BRIEN AND GERE ENGINEERS,  INC.
SOILS
SLUDGES
                                                      NONVOLATILE METALS
                                                      VOLATILE METALS
                                                      PCBs
                                                      HALOGENATED VOLATILES
                                                      HALOGENATED NONVOLATILES
                                                      NONHALOGENATED NONVOLATILES
                                                      DIOXINS/FURANS
                                                                                            YES        NO
                                OHM CORPORATION
                                                                      SOILS             PESTICIDES
                                                                      SLUDGES          HALOGENATED  NONVOLATILES
                                                                      OTHER  SOLIDS      PCBs
                                                                                       NONHALOGENATED  NONVOLATILES
                                                                                       NONVOLATILE  METALS
                                                                                                                            YES       YES
                                PEI  ASSOCIATES,  INC.
                                     SOILS
                                     OTHER SOLIDS
                 NONVOLATILE METALS
                 VOLATILE METALS
                                                                                           YES       NO
                                PITTSBURGH  MIN&ENV.TECH.,  INC.
                                     SOILS
                                     SLUDGES
                 NONVOLATILE METALS
                 VOLATILE METALS
                                                                                           YES       YES

-------
                       TABLE # 2 (CONTINUED)
TREATMENT TECHNOLOGY
SOIL WASHING
(continued)
COMPANY NAME
PITTSBURGH MIN&ENV.TECH.. INC.
(continued)
MEDIA TREATED CONTAMINANT GROUPS
SEDIMENTS
BENCH
SCALE

PILOT
SCALE

REMEDIATION TECHNOLOGIES
SEDIMENTS        HALOGENATED NONVOLATILES
SOILS            HALOGENATED VOLATILES
SLUDGES          INORGANIC CORROSIVES
                 INORGANIC CYANIDES
                 NONHALOGENATED VOLATILES
                 NONHALOGENATED NONVOLATILES
                 NONVOLATILE METALS
                 VOLATILE METALS
                                                                                            YES
                                                                                                      NO
RMC ENV & ANALYTICAL LABORATORIES
                                      SEDIMENTS        DIOXINS/FURANS
                                      SLUDGES          HALOGENATED NONVOLATILES
                                      SOILS            HALOGENATED VOLATILES
                                                       NONHALOGENATED NONVOLATILES
                                                       NONHALOGENATED VOLATILES
                                                       NONVOLATILE METALS
                                                       ORGANIC CORROSIVES
                                                       ORGANIC CYANIDES
                                                       PCBs
                                                       PESTICIDES
                                                                                            YES
                                                                                                      YES
RMT, INC.
SEDIMENTS        HALOGENATED VOLATILES
SLUDGES          HALOGENATED NONVOLATILES
SOILS            PCBs
                 ORGANIC CORROSIVES
                 ORGANIC CYANIDES
                 NONHALOGENATED VOLATILES
                 NONHALOGENATED NONVOLATILES
                 NONVOLATILE METALS
                 VOLATILE METALS
                 PESTICIDES
                                                                                            YES
                                                                                                      YES
RNK ENVIRONMENTAL, INC.
SEDIMENTS        HALOGENATED VOLATILES
SLUDGES          PESTICIDES
                                                                                            YES
                                                                                                      YES

-------
                       TABLE # 2  (CONTINUED)
TREATMENT TECHNOLOGY
SOIL WASHING
(continued)
COMPANY NAME
RNK ENVIRONMENTAL, INC.
(continued)
MEDIA TREATED
SOILS
OTHER SOLIDS
CONTAMINANT GROUPS
ORGANIC CORROSIVES
HALOGENATED NONVOLATILES
BENCH PILOT
SCALE SCALE

                                                       NONHALOGENATED NONVOLATILES
                                                       NONHALOGENATED VOLATILES
ROY F. WESTON, INC.
SEDIMENTS        PESTICIDES
SLUDGES          DIOXINS/FURANS
SOILS            NONVOLATILE METALS
                 INORGANIC CYANIDES
                 INORGANIC CORROSIVES
                 ORGANIC CYANIDES
                 ORGANIC CORROSIVES
                 HALOGENATED NONVOLATILES
                 HALOGENATED VOLATILES
                 NONHALOGENATED NONVOLATILES
                 NONHALOGENATED VOLATILES
                 PCBs
                                     YES
                                               NO
SYBRON CHEMICALS, INC.
OTHER SOLIDS
SEDIMENTS
SLUDGES
SOILS
HALOGENATED NONVOLATILES
HALOGENATED VOLATILES
INORGANIC CYANIDES
NONHALOGENATED VOLATILES
NONVOLATILE METALS
ORGANIC CYANIDES
YES
          YES
TREATEK, INC.
AQUEOUS MEDIA
ORGANIC LIQUID
SLUDGES
SOILS
HALOGENATED NONVOLATILES
HALOGENATED VOLATILES
NONHALOGENATED NONVOLATILES
NONHALOGENATED VOLATILES
NONVOLATILE METALS
PCBs
PESTICIDES
YES
          NO
WESTERN RESEARCH INSTITUTE
                                      AQUEOUS MEDIA
                                      SEDIMENTS
                 NONHALOGENATED NONVOLATILES
                 NONVOLATILE METALS
                                     NO
                                               YES

-------
TREATMENT TECHNOLOGY
                                                       TABLE # 2 (CONTINUED)

                                      COMPANY NAME                    MEDIA TREATED
                                                          CONTAMINANT GROUPS
                                                      BENCH
                                                      SCALE
         PILOT
         SCALE
SOIL WASHING
(continued)
WESTERN RESEARCH INSTITUTE
(continued)
                                WESTINGHOUSE SCIENCE & TECHNOLOGY
                                WOODWARD CLYDE CONSULTANTS
SLUDGES
SOILS

SOILS
                                      SEDIMENTS
                                      SLUDGES
                                      SOILS
                                      OTHER SOLIDS
                 PCBS
                                                       NONVOLATILE METALS
                                                       ORGANIC CORROSIVES
                                                       PCBs
                                                       RADIOACTIVE MATERIALS

                                                       NOT SPECIFIED
                                                                                                                            YES
                                                                                                                                      YES
                                                                                                                            YES
                                                                                                                                      YES
SOLVENT RECOVERY
                                AAA CSI
                                CAMBRIDGE SCIENTIFIC, INC.

                                CHEMENCO, INC.


                                DETOX, INC.
                                      AQUEOUS MEDIA
                                      ORGANIC LIQUID
                                                                      SOILS
                 HALOGENATED NONVOLATILES
                 HALOGENATED VOLATILES
                 INORGANIC CORROSIVES
                 NONHALOGENATED NONVOLATILES
                 NONHALOGENATED VOLATILES
                 NONVOLATILE METALS
                 ORGANIC CORROSIVES
                 OXIDIZERS
                 PCBs
                 PESTICIDES
                 REDUCERS
                 VOLATILE METALS

                 NONHALOGENATED VOLATILES
                                                                                                                            NO
                                                                                                                                      NO
                                      AQUEOUS MEDIA     NOT  SPECIFIED
                                      ORGANIC LIQUID
                                      AQUEOUS MEDIA
                                      ORGANIC LIQUID
                                      SEDIMENTS
                  HALOGENATED  VOLATILES
                  HALOGENATED  NONVOLATILES
                  NONHALOGENATED VOLATILES
INP       INP

YES       NO


YES       YES

-------
TREATMENT TECHNOLOGY
                                      COMPANY NAME
                       TABLE # 2 (CONTINUED)

                                      MEDIA TREATED
                                                                                          CONTAMINANT GROUPS
                                                      BENCH     PILOT
                                                      SCALE     SCALE
SOLVENT RECOVERY
(continued)
DETOX, INC.
(continued)
SLUDGES
SOILS
NONHALOGENATED NONVOLATILES
PESTICIDES
DIOXINS/FURANS
ORGANIC CYANIDES
ORGANIC CORROSIVES
VOLATILE METALS
NONVOLATILE METALS
                                DIVERSIFIED ENGINEERING,  INC.
                                      ORGANIC  LIQUID
                                                       HALOGENATED VOLATILES
                                                       NONHALOGENATED VOLATILES
                                                                                                                           YES
                                                                                                                                      INP
                                E M & C ENGINEERING  ASSOCIATES
                                                                      AQUEOUS MEDIA
                                                                      ORGANIC LIQUID
                                                      DIOXINS/FURANS
                                                      HALOGENATED  NONVOLATILES
                                                      HALOGENATED  VOLATILES
                                                      INORGANIC CORROSIVES
                                                      INORGANIC CYANIDES
                                                      NONVOLATILE  METALS
                                                      ORGANIC CYANIDES
                                                      OXIDIZERS
                                                      PCBs
                                                      PESTICIDES
                                                      REDUCERS
                                                      VOLATILE METALS
                                                                                                                            INP        INP
                                INTERNATIONAL  PROCESS RESEARCH CORP
                                                                     AQUEOUS MEDIA
                                                                     ORGANIC LIQUID
                                                      HALOGENATED NONVOLATILES
                                                      HALOGENATED VOLATILES
                                                      INORGANIC CORROSIVES
                                                      INORGANIC CYANIDES
                                                      NONHALOGENATED VOLATILES
                                                      NONVOLATILE METALS
                                                      ORGANIC CORROSIVES
                                                      ORGANIC CYANIDES
                                                      OXIDIZERS
                                                      REDUCERS
                                                                                                                           YES
                                                                                                                                     YES

-------
TREATMENT TECHNOLOGY
                       TABLE  # 2  (CONTINUED)

      COMPANY  NAME                     MEDIA TREATED
                                                                                          CONTAMINANT  GROUPS
                                     BENCH     PILOT
                                     SCALE     SCALE
SOLVENT RECOVERY
(continued)
IT CORPORATION
                                      AQUEOUS  MEDIA
                                      ORGANIC  LIQUID
HALOGENATED VOLATILES
NONHALOGENATED VOLATILES
                                                                                            YES       YES
                                KSE,  INC.
                                      AQUEOUS  MEDIA
                                      ORGANIC  LIQUID
HALOGENATED VOLATILES
NONHALOGENATED VOLATILES
NONVOLATILE METALS
VOALTILE METALS
                                                                                                                            YES       YES
                                MAECORP,  INC.
                                      AQUEOUS  MEDIA
                                      ORGANIC  LIQUID
                                      SOILS
                                      SLUDGES
VOLATILE METALS
NONVOLATILE METALS
                                                                                                                            YES       YES
                                MCNAMEE ADVANCED  TECHNOLOGY,  INC.
                                                                      AQUEOUS MEDIA
                                                       HALOGENATED  NONVOLATILES
                                                       HALOGENATED  VOLATILES
                                                       NONHALOGENATED  NONVOLATILES
                                                       NONHALOGENATED  VOLATILES
                                                                                                                            YES       YES
                                O'BRIEN AND  GERE  ENGINEERS,  INC.
                                      AQUEOUS  MEDIA
                                      ORGANIC  LIQUID
HALOGENATED VOLATILES
NONHALOGENATED NONVOLATILES
NONHALOGENATED VOLATILES
HALOGENATED NONVOLATILES
                                                                                                                            YES       NO
                                OHM CORPORATION/SPAR
                                      ORGANIC  LIQUID
                                      SLUDGES
VOLATILE METALS
HALOGENATED NONVOLATILES
HALOGENATED VOLATILES
NONHALOGENATED VOLATILES
NONVOLATILE METALS
NONHALOGENATED NONVOLATILES
PESTICIDES
                                                                                                                            YES       YES
                                RMT,  INC.
                                      AQUEOUS MEDIA    NONHALOGENATED VOLATILES
                                      ORGANIC LIQUID
                                                                                                                            YES       YES
                                WOODWARD  CLYDE  CONSULTANTS
                                                                      AQUEOUS MEDIA    NOT SPECIFIED
                                                                                                                            YES       YES

-------
TREATMENT TECHNOLOGY
                       TABLE # 2 (CONTINUED)

      COMPANY NAME                    MEDIA TREATED
                    CONTAMINANT GROUPS
BENCH     PILOT
SCALE     SCALE
SOLVENT RECOVERY
(continued)
WOODWARD CLYDE CONSULTANTS
(continued)
ORGANIC LIQUID
SPRAY DRYING
                                WESTERN RESEARCH INSTITUTE
                                      AQUEOUS MEDIA    NONHALOGENATED NONVOLATILES
                                      ORGANIC LIQUID
                                                                                                                            INP       INP
STRIPPING
                                AAA CSI
                                                                      AQUEOUS MEDIA
                                                                      ORGANIC LIQUID
                                                       HALOGENATED NONVOLATILES
                                                       HALOGENATED VOLATILES
                                                       INORGANIC CORROSIVES
                                                       NONHALOGENATED NONVOLATILES
                                                       NONHALOGENATED VOLATILES
                                                       NONVOLATILE METALS
                                                       ORGANIC CORROSIVES
                                                       OXIDIZERS
                                                       PCBs
                                                       PESTICIDES
                                                       REDUCERS
                                                       VOLATILE METALS
                                                                                                                            NO        NO
                                ANDCO ENVIRONMENTAL  PROCESSES,  INC.    AQUEOUS MEDIA
                                                       NONHALOGENATED  VOLATILES
                                                       HALOGENATED  VOLATILES
                                                                                                                            YES       NO
                                APPLIED SURFACE TECHNOLOGY
                                      AQUEOUS MEDIA
                                      ORGANIC LIQUIDS
                                      SLUDGES
                                      SOILS
                 INORGANIC CORROSIVES
                 OXIDIZERS
                 HALOGENATED NONVOLATILES
                 HALOGENATED VOLATILES
                 NONVOLATILE METALS
                 ORGANIC CYANIDES
                 INORGANIC CYANIDES
                                                                                                                            YES       YES
                                BIOSCIENCE MANAGEMENT,  INC.
                                                                      ORGANIC LIQUID
                                                       DIOXINS/FURANS
                                                       HALOGENATED  NONVOLATILES
                                                       HALOGENATED  VOLATILES
                                                       INORGANIC CYANIDES
                                                                                                                            YES       YES

-------
TREATMENT TECHNOLOGY
                       TABLE # 2 (CONTINUED)

      COMPANY NAME                    MEDIA TREATED
                                                                                          CONTAMINANT GROUPS
                                     BENCH     PILOT
                                     SCALE     SCALE
STRIPPING
(continued)
BIOSCIENCE MANAGEMENT, INC.
(continued)
NONHALOGENATED NONVOLATILES
NONHALOGENATED VOLATILES
ORGANIC CYANIDES
ORGANIC CORROSIVES
PCBs
                                C-E ENVIRONMENTAL, INC.
                                                                      AQUEOUS MEDIA
                                                       HALOGENATED VOLATILES
                                                       NONHALOGENATED VOLATILES
                                                                                                                            YES       YES
                                C-EE BIOREMEDIATION SYSTEMS
                                                                      AQUEOUS MEDIA
                                                                      ORGANIC LIQUID
                                                       HALOGENATED NONVOLATILES
                                                       HALOGENATED VOLATILES
                                                       NONHALOGENATED NONVOLATILES
                                                       NONHALOGENATED VOLATILES
                                                       PCBs
                                                       PESTICIDES
                                                                                                                            YES       NO
                                CHEMENCO,  INC.
                                      AQUEOUS MEDIA
                                      ORGANIC LIQUID
                                                                                       NOT SPECIFIED
                                                                                                                            YES       NO
                                DETOX, INC.
                                      AQUEOUS MEDIA
                                      ORGANIC LIQUID
                                      SEDIMENTS
                                      SLUDGES
                                      SOILS
HALOGENATED VOLATILES
HALOGENATED NONVOLATILES
NONHALOGENATED VOLATILES
NONHALOGENATED NONVOLATILES
PESTICIDES
DIOXINS/FURANS
ORGANIC CYANIDES
ORGANIC CORROSIVES
VOLATILE METALS
NONVOLATILE METALS
                                                                                                                            YES       YES
                                E M & C ENGINEERING ASSOCIATES
                                                                      AQUEOUS MEDIA
                                                                      ORGANIC LIQUID
                                                       DIOXINS/FURANS
                                                       HALOGENATED NONVOLATILES
                                                       HALOGENATED VOLATILES
                                                       INORGANIC CORROSIVES
                                                       INORGANIC CYANIDES
                                                                                                                            INP       INP

-------
TREATMENT TECHNOLOGY
                       TABLE # 2 (CONTINUED)

      COMPANY NAME                     MEDIA TREATED
                                                                                          CONTAMINANT GROUPS
                                     BENCH
                                     SCALE
          PILOT
          SCALE
STRIPPING
(continued)
E M & C ENGINEERING  ASSOCIATES
(continued)
                                EARTH TECHNOLOGY CORP.
                                EARTH TECHNOLOGY CORP.
                                ENSOTECH,  INC.
                                     AQUEOUS MEDIA

                                     AQUEOUS MEDIA
                                     ORGANIC LIQUID

                                     ORGANIC LIQUID
                                     AQUEOUS MEDIA
                                ENVIRONMENTAL  RESOURCE  ASSOCIATES
                                                                      AQUEOUS MEDIA
                                ENVIRONMENTAL  TECHNOLOGY  SOUTHEAST     AQUEOUS MEDIA
NONVOLATILE METALS
ORGANIC CYANIDES
OXIDIZERS
PCBs
PESTICIDES
REDUCERS
VOLATILE METALS

HALOGENATED VOLATILES

NOT SPECIFIED
HALOGENATED NONVOLATILES
HALOGENATED VOLATILES
INORGANIC CORROSIVES
INORGANIC CYANIDES
NONHALOGENATED NONVOLATILES
NONHALOGENATED VOLATILES
NONVOLATILE METALS
OXIDIZERS
REDUCERS

HALOGENATED NONVOLATILES
HALOGENATED VOLATILES
INORGANIC CORROSIVES
NONHALOGENATED NONVOLATILES
NONHALOGENATED VOLATILES
NONVOLATILE METALS

HALOGENATED NONVOLATILES
HALOGENATED VOLATILES
NONHALOGENATED NONVOLATILES
NONHALOGENATED VOLATILES
NONVOLATILE METALS
YES       NO

YES       NO


YES       YES
                                                                                                                           YES       YES
                                                                                                                            INP        INP

-------
TREATMENT TECHNOLOGY
                                                       TABLE  # 2 (CONTINUED)

                                      COMPANY  NAME                     MEDIA TREATED
                    CONTAMINANT GROUPS
                                     BENCH
                                     SCALE
PILOT
SCALE
STRIPPING
(continued)
                                ENWRIGHT ENVIRONMENTAL,  INC.
                                GENERAL PHYSICS CORPORATION
                                GROUNDWATER & ENVIRONMENTAL SERVICE
                                HUNTER BIOSCIENCES,  INC.
                                HUNTER SERVICES,  INC.
AQUEOUS MEDIA
ORGANIC LIQUID

AQUEOUS MEDIA
ORGANIC LIQUID
AQUEOUS MEDIA
SEDIMENTS
SLUDGES
SOILS

AQUEOUS MEDIA
AQUEOUS MEDIA
ORGANIC LIQUID
                                                                                       RADIOACTIVE  MATERIALS
HALOGENATED NONVOLATILES
HALOGENATED VOLATILES
NONHALOGENATED NONVOLATILES
NONHALOGENATED VOLATILES
NONVOLATILE METALS
ORGANIC CORROSIVES
ORGANIC CYANIDES
PCBs
PESTICIDES

NOT SPECIFIED
HALOGENATED VOLATILES
NONHALOGENATED NONVOLATILES
NONHALOGENATED VOLATILES

DIOXINS/FURANS
HALOGENATED NONVOLATILES
HALOGENATED VOLATILES
NONHALOGENATED NONVOLATILES
NONHALOGENATED VOLATILES
NONVOLATILE METALS
ORGANIC CORROSIVES
ORGANIC CYANIDES
OXIDIZERS
PCBs
PESTICIDES
REDUCERS
                                                                                                                           YES
                                                                                                                           YES
                                                                                                                                     YES
                                                                                                                                     YES
                                                                                                                            YES       INP
                                                                                                                            YES       INP
                                                                                                                            YES       YES

-------
TREATMENT TECHNOLOGY
                 TABLE # 2 (CONTINUED)

COMPANY NAME                    MEDIA TREATED       CONTAMINANT GROUPS
                                                                                                                            BENCH
                                                                                                                            SCALE
                                                                                                PILOT
                                                                                                SCALE
STRIPPING
(continued)
                                INTERNATIONAL PROCESS RESEARCH CORP
                                IT CORPORATION
                                KEYSTONE ENVIRONMENTAL RESOURCES
                                KSE, INC.
                                MAECORP,  INC.
                                MCNAMEE ADVANCED TECHNOLOGY,  INC.
                                NATIONAL SANITATION  FOUNDATION
                                O'BRIEN AND  GERE  ENGINEERS,  INC.
                                                                      AQUEOUS MEDIA
                                                                      ORGANIC LIQUID
HALOGENATED NONVOLATILES
HALOGENATED VOLATILES
INORGANIC CORROSIVES
INORGANIC CYANIDES
NONHALOGENATED VOLATILES
NONVOLATILE METALS
ORGANIC CORROSIVES
ORGANIC CYANIDES
OXIDIZERS
REDUCERS

HALOGENATED VOLATILES
NONHALOGENATED VOLATILES
PESTICIDES

NONHALOGENATED VOLATILES
HALOGENATED VOLATILES

HALOGENATED VOLATILES
NONHALOGENATED VOLATILES
NONVOLATILE METALS
VOLATILE METALS
                               AQUEOUS MEDIA     HALOGENATED VOLATILES
                               ORGANIC LIQUID    NONHALOGENATED VOLATILES
                                                 VOLATILE METALS

                               AQUEOUS MEDIA     VOLATILE METALS
                                                 HALOGENATED VOLATILES
                                                 NONHALOGENATED VOLATILES

                               NOT SPECIFIED     NOT SPECIFIED

                               AQUEOUS MEDIA     HALOGENATED NONVOLATILES
                                                                      AQUEOUS MEDIA
                                                                      SOILS
                                                                      AQUEOUS MEDIA
                               AQUEOUS MEDIA
                               ORGANIC LIQUID
                                                                                      YES
                                                                                                YES
                                                                                                                            YES
                                                                                                                            YES
                                                                                      YES
                                                                                                                                      YES
                                                                                                                                      NO
          YES
YES



YES



INP

YES
                                               YES



                                               YES



                                               INP

                                               YES

-------
                       TABLE # 2 (CONTINUED)
TREATMENT TECHNOLOGY
STRIPPING
(continued)
COMPANY NAME
O'BRIEN AND GERE ENGINEERS, INC.
(continued)
MEDIA TREATED
ORGANIC LIQUID
CONTAMINANT GROUPS
HALOGENATED VOLATILES
BENCH
SCALE

PILOT
SCALE

                                                       NONHALOGENATED NONVOLATILES
                                                       NONHALOGENATED VOLATILES
OHM CORPORATION
                                      AQUEOUS MEDIA
                                      ORGANIC LIQUID
                                      SLUDGES
HALOGENATED VOLATILES
HALOGENATED NONVOLATILES
NONHALOGENATED VOLATILES
NONHALOGENATED NONVOLATILES
                                                                                            YES
                                                                                                      YES
RADIAN CORPORATION
                                      AQUEOUS MEDIA
                                      ORGANIC LIQUID
HALOGENATED NONVOLATILES
HALOGENATED VOLATILES
NONHALOGENATED NONVOLATILES
NONHALOGENATED VOLATILES
NONVOLATILE METALS
ORGANIC CORROSIVES
ORGANIC CYANIDES
OXIDIZERS
PCBs
PESTICIDES
REDUCERS
VOLATILE METALS
                                                                                            YES
                                                                                                      YES
REMEDIATION TECHNOLOGIES
                                      SOILS            HALOGENATED NONVOLATILES
                                      SLUDGES          HALOGENATED VOLATILES
                                      SEDIMENTS        NONHALOGENATED NONVOLATILES
                                      OTHER SOLIDS     NONHALOGENATED VOLATILES
                                                       ORGANIC CORROSIVES
                                                       ORGANIC CYANIDES
                                                                                            YES
                                                                                                      INP
RIVER OAK ASSOCIATES
                                      AQUEOUS MEDIA
                                      ORGANIC LIQUID
HALOGENATED NONVOLATILES
HALOGENATED VOLATILES
INORGANIC CORROSIVES
INORGANIC CYANIDES
NONVOLATILE METALS
OXIDIZERS
                                                                                            YES
                                                                                                      NO

-------
                       TABLE # 2 (CONTINUED)
TREATMENT TECHNOLOGY
STRIPPING
(continued)
COMPANY NAME
RIVER OAK ASSOCIATES
(continued)
MEDIA TREATED CONTAMINANT GROUPS
RADIOACTIVE MATERIALS
BENCH
SCALE

PILOT
SCALE

                                                       REDUCERS
                                                       VOLATILE METALS
RMT, INC.
AQUEOUS MEDIA
ORGANIC LIQUID
SOILS
SLUDGES
SEDIMENTS
HALOGENATED VOLATILES
INORGANIC CYANIDES
VOLATILES METALS
NONHALOGENATED VOLATILES
ORGANIC CYANIDES
                                                                                            YES
                                                                                                      YES
ROY F. UESTON, INC.
AQUEOUS MEDIA
ORGANIC LIQUID
PESTICIDES
DIOXINS/OJRANS
NONVOLATILE METALS
INORGANIC CYANIDES
ORGANIC CYANIDES
INORGANIC CORROSIVES
ORGANIC CORROSIVES
HALOGENATED VOLATILES
HALOGENATED NONVOLATILES
NONHALOGENATED VOLATILES
NONHALOGENATED NONVOLATILES
PCBs
                                                                                            YES
                                                                                                      YES
TREATEK,  INC.
AQUEOUS MEDIA
SEDIMENTS
SLUDGES
SOILS
HALOGENATED NONVOLATILES
HALOGENATED VOLATILES
NONHALOGENATED NONVOLATILES
NONHALOGENATED VOLATILES
NONVOLATILE METALS
PCBs
PESTICIDES
                                                                                            YES
                                                                                                      NO
VERSAR INC.
AQUEOUS MEDIA
ORGANIC LIQUID
HALOGENATED NONVOLATILES
HALOGENATED VOLATILES
NONHALOGENATED NONVOLATILES
NONHALOGENATED VOLATILES
                                                                                            YES
                                                                                                      NO

-------
TREATMENT TECHNOLOGY
                                                       TABLE # 2 (CONTINUED)

                                      COMPANY NAME                    MEDIA TREATED
                    CONTAMINANT GROUPS
                                     BENCH
                                     SCALE
PILOT
SCALE
STRIPPING
(continued)
                                WESTERN RESEARCH INSTITUTE
                                WOODWARD CLYDE CONSULTANTS
                                YEC INC
                                ZIMPRO PASSAVANT
AQUEOUS MEDIA    INORGANIC CYANIDES
ORGANIC LIQUID   NONHALOGENATED NONVOLATILES
                 NONHALOGENATED VOLATILES
                 NONVOLATILE METALS
                 ORGANIC CYANIDES

AQUEOUS MEDIA    NOT SPECIFIED
ORGANIC LIQUID

NOT SPECIFIED    NOT SPECIFIED

AQUEOUS MEDIA    HALOGENATED VOLATILES
                 NONHALOGENATED VOLATILES
                                                                                                                            YES
                                                                                                                                      YES
                                     YES       YES


                                     YES       YES

                                     YES       YES
TRICKLING FILTERS
                                DIVERSIFIED ENGINEERING, INC.
AQUEOUS MEDIA
ORGANIC LIQUID
SLUDGES
SEDIMENTS
HALOGENATED NONVOLATILES
NONVOLATILE METALS
NONHALOGENATED NONVOLATILES
                                                                                                                            YES       INP
ULTRAFILTRATION
                                AEA TECHNOLOGY
                                APPLIED SURFACE TECHNOLOGY
AQUEOUS MEDIA
ORGANIC LIQUID
SEDIMENTS
SLUDGES
SOILS

AQUEOUS MEDIA
ORGANIC LIQUIDS
SLUDGES
SOILS
                                                                                       RADIOACTIVE MATERIALS
                                                                                                                            YES       YES
INORGANIC CORROSIVES
OXIDIZERS
HALOGENATED NONVOLATILES
HALOGENATED VOLATILES
NONVOLATILE METALS
ORGANIC CYANIDES
INORGANIC CYANIDES
                                                                                                                            YES       YES

-------
            TREATMENT  TECHNOLOGY
                       TABLE # 2 (CONTINUED)

      COMPANY NAME                    MEDIA TREATED       CONTAMINANT GROUPS
                                                                                                                                       BENCH
                                                                                                                                       SCALE
                                                                PILOT
                                                                SCALE
           ULTRAFILTRATION
           (continued)
                                            DIVERSIFIED ENGINEERING,  INC.
                                            KSE,  INC.
                                           RMT,  INC.
                                      AQUEOUS MEDIA
                                      ORGANIC LIQUID
                                      AQUEOUS MEDIA
                                      ORGANIC LIQUID
                 HALOGENATED NONVOLATILES
                 NONVOLATILE METALS
                 NONHALOGENATED NONVOLATILES
                 RADIOACTIVE MATERIALS

                 HALOGENATED VOLATILES
                 NONHALOGENATED VOLATILES
                 NONVOLATILE METALS
                 VOLATILE METALS
                                      AQUEOUS MEDIA    NOT SPECIFIED
                                                                                            YES
                                                                                                      YES
                                     YES       YES
                                                                                            YES       YES
CD
o
           UV/DEEP TREATMENT
THORNE ENVIRONMENTAL, INC.
AQUEOUS MEDIA
HALOGENATED VOLATILES
HALOGENATED NONVOLATILES
NONHALOGENATED VOLATILES
NONHALOGENATED NONVOLATILES
PCBs
PESTICIDES
DIOXINS/FURANS
ORGANIC CYANIDES
INORGANIC CYANIDES
OXIDIZERS
REDUCERS
YES       NO
           UV/OXIDATION
C-E ENVIRONMENTAL,  INC.
                                                                                 AQUEOUS MEDIA    HALOGENATED VOLATILES
                                                                                 ORGANIC LIQUID   NONHALOGENATED VOLATILES
                                                                                                                                       YES       YES
                                           EARTH TECHNOLOGY CORP.
                                           MCNAMEE ADVANCED TECHNOLOGY, INC.
                                      AQUEOUS MEDIA    NONHALOGENATED VOLATILES

                                      AQUEOUS MEDIA    HALOGENATED  NONVOLATILES
                                                       HALOGENATED  VOLATILES
                                                       ORGANIC CYANIDES
                                                      YES       YES

                                                      YES       YES

-------
 TREATMENT  TECHNOLOGY
                       TABLE # 2 (CONTINUED)

      COMPANY NAME                    MEDIA TREATED       CONTAMINANT GROUPS
                                                      BENCH     PILOT
                                                      SCALE     SCALE
UV/OXIDATION
(continued)
MCNAMEE ADVANCED TECHNOLOGY, INC.
(continued)
                 INORGANIC CYANIDES
                 NONHALOGENATED NONVOLATILES
                 NONHALOGENATED VOLATILES
                                ULTROX INTERNATIONAL
                                      AQUEOUS MEDIA
                 HALOGENATED VOLATILES
                 PCBs
                 PESTICIDES
                 ORGANIC CYANIDES
                 INORGANIC CYANIDES
                 NONHALOGENATED VOLATILES
                                                                                                                            YES
                                                                                                                                      YES
                                ULTROX INTERNATIONAL
                                                                      AQUEOUS MEDIA
                                                       HALOGENATED VOLATILES
                                                       PESTICIDES
                                                       PCBs
                                                       ORGANIC CYANIDES
                                                       INORGANIC CYANIDES
                                                       NONHALOGENATED VOLATILES
                                                                                                                            YES
                                                                                                                                      YES
UV/OZOMATION
I IT RESEARCH INST
                                      AQUEOUS MEDIA
                 DIOXINS/FURANS
                 HALOGENATED NONVOLATILES
                 HALOGENATED VOLATILES
                 PESTICIDES
                 ORGANIC CYANIDES
                 NONHALOGENATED NONVOLATILES
                 PCBs
                                                                                                                            YES       YES
UV/PEROXIDATION
MAECORP, INC.
AQUEOUS MEDIA
ORGANIC LIQUID
                 HALOGENATED VOLATILES
                                                                                                                            YES       YES
UV/PHOTOLYSIS
O'BRIEN AND GERE ENGINEERS, INC.
AQUEOUS MEDIA
ORGANIC LIQUID
SOILS
DIOXINS/FURANS
HALOGENATED NONVOLATILES
PCBs
                                                                                                                            YES       NO

-------
TREATMENT TECHNOLOGY
                       TABLE # 2 (CONTINUED)

      COMPANY NAME                    MEDIA TREATED       CONTAMINANT GROUPS
                                     BENCH     PILOT
                                     SCALE     SCALE
UV/PHOTOLYSIS
(continued)
O'BRIEN AND GERE ENGINEERS, INC.
(continued)
HALOGENATED VOLATILES
ORGANIC CYANIDES
INORGANIC CYANIDES
VAPOR EXTRACTION
                                THORNE ENVIRONMENTAL, INC.
                                      SOILS            HALOGENATED VOLATILES
                                      AQUEOUS MEDIA    NONHALOGENATED VOLATILES
                                                                                                                            NO        YES
VAPOR SEPARATION
MEMBRANE TECHNOLOGY & RESEARCH,  INC   NOT SPECIFIED    HALOGENATED VOLATILES
                                                       NONHALOGENATED VOLATILES
                                                                                                                            YES       YES
WASHING
                                AEA TECHNOLOGY
                                                                      AQUEOUS MEDIA    RADIOACTIVE MATERIALS
                                                                      ORGANIC LIQUID
                                                                      SEDIMENTS
                                                                      SLUDGES
                                                                      SOILS
                                                                                                                            YES       YES

-------
TREATMENT TECHNOLOGY
                                      COMPANY NAME
TABLE # 2 (CONTINUED)

               MEDIA TREATED
                                                                                          CONTAMINANT  GROUPS
                                                                                                                            BENCH
                                                                                                                            SCALE
                                                                               PILOT
                                                                               SCALE
THERMAL
ELECTROCHEMICAL INCINERATION    AEA TECHNOLOGY
                                                                      AQUEOUS MEDIA
                                                                      ORGANIC LIQUID
                                                                      SEDIMENTS
                                                                      SLUDGES
                                                                      SOILS
                                PESTICIDES
                                PCBs
                                                                     INP
                                                                               INP
INCINERATION
                                AAA CSI
                                AAA CSI
                                                                      AQUEOUS MEDIA
                                                                      ORGANIC LIQUID
                                                                      SEDIMENTS
                                                                      SLUDGES
                                                                      SOILS
                                HALOGENATED  NONVOLATILES
                                HALOGENATED  VOLATILES
                                INORGANIC CORROSIVES
                                NONHALOGENATED NONVOLATILES
                                NONHALOGENATED VOLATILES
                                NONVOLATILE  METALS
                                ORGANIC CORROSIVES
                                OXIDIZERS
                                PCBs
                                PESTICIDES
                                REDUCERS
                                VOLATILE METALS

                                HALOGENATED  NONVOLATILES
                                HALOGENATED  VOLATILES
                                INORGANIC CORROSIVES
                                NONHALOGENATED NONVOLATILES
                                NONHALOGENATED VOLATILES
                                NONVOLATILE  METALS
                                ORGANIC CORROSIVES
                                OXIDIZERS
                                PCBS
                                PESTICIDES
                                REDUCERS
                                VOLATILE METALS
                                                                                                                            NO         NO
NO        NO
                                AEA  TECHNOLOGY
                                                                      AQUEOUS  MEDIA     RADIOACTIVE  MATERIALS
                                                                                                                            YES       YES

-------
TREATMENT TECHNOLOGY
                       TABLE # 2 (CONTINUED)

      COMPANY NAME                    MEDIA TREATED       CONTAMINANT GROUPS
                                                                                                                            BENCH     PILOT
                                                                                                                            SCALE     SCALE
INCINERATION
(continued)
AEA TECHNOLOGY
(continued)
                                C-E ENVIRONMENTAL,  INC.
                                CHEMENCO,  INC.
                                CHEMENCO,  INC.
                                DIVERSIFIED  ENGINEERING, INC.
                                E M & C ENGINEERING ASSOCIATES
ORGANIC LIQUID
SEDIMENTS
SLUDGES
SOILS

SEDIMENTS        NOT SPECIFIED
SLUDGES
SOILS

AQUEOUS MEDIA    NOT SPECIFIED
ORGANIC LIQUID
                                     OTHER  SOLIDS
                                     SOILS
                                     SEDIMENTS
                                     SLUDGES

                                     SEDIMENTS
                                     SLUDGES
                                     SOILS
                                                       NOT  SPECIFIED
                                                                                            YES
                                                                                                                            YES
                                                                                            YES
                                                                                                      YES
                                                                                                                                      NO
                                                                                                      NO
                                                                     SLUDGES
                                                                     OTHER SOLIDS
                                                                     SOILS
                 RADIOACTIVE MATERIALS
                 HALOGENATED VOLATILES
                 ORGANIC CORROSIVES
                 PESTICIDES
                 NONHALOGENATED VOLATILES
                 INORGANIC CORROSIVES
                 VOLATILE METALS

                 DIOXINS/FURANS
                 HALOGENATED NONVOLATILES
                 HALOGENATED VOLATILES
                 INORGANIC CORROSIVES
                 INORGANIC CYANIDES
                 NONVOLATILE METALS
                 ORGANIC CYANIDES
                 OXIDIZERS
                 PCBs
                 PESTICIDES
YES
          INP
                                                                                                                           INP        INP

-------
                       TABLE # 2 (CONTINUED)
TREATMENT TECHNOLOGY
INCINERATION
(continued)
COMPANY NAME
E M & C ENGINEERING ASSOCIATES
(continued)
MEDIA TREATED CONTAMINANT GROUPS
REDUCERS
VOLATILE METALS
BENCH PILOT
SCALE SCALE

EARTH TECHNOLOGY CORP.
ENERGY&ENVIRONMENTAL RESEARCH CORP.
ENSOTECH, INC.
ENVIRONMENTAL TECHNOLOGY SOUTHEAST
OTHER SOLIDS
SEDIMENTS
SLUDGES
SOILS

SLUDGES
SOILS
ORGANIC LIQUID
OTHER SOLIDS
SEDIMENTS
SLUDGES
SOILS
SEDIMENTS
SLUDGES
SOILS
                                                       NOT SPECIFIED
                                                                                            YES
                                                                                                      NO
DIOXINS/FURANS
HALOGENATED NONVOLATILES
HALOGENATED VOLATILES
INORGANIC CORROSIVES
NONHALOGENATED NONVOLATILES
NONHALOGENATED VOLATILES
NONVOLATILE METALS
ORGANIC CYANIDES
OXIDIZERS
PCBs
PESTICIDES
REDUCERS

HALOGENATED NONVOLATILES
KALOGENATED VOLATILES
INORGANIC CORROSIVES
INORGANIC CYANIDES
NONHALOGENATED NONVOLATILES
NONHALOGENATED VOLATILES
NONVOLATILE METALS
OXIDIZERS
REDUCERS

HALOGENATED NONVOLATILES
HALOGENATED VOLATILES
NONHALOGENATED NONVOLATILES
NONHALOGENATED VOLATILES
                                                                                            YES
                                                                                                      YES
                                                                                            YES
                                                                                                      YES
                                                                                            INP
                                                                                                      INP

-------
TREATMENT TECHNOLOGY
                       TABLE # 2 (CONTINUED)

      COMPANY NAME                     MEDIA TREATED        CONTAMINANT  GROUPS
                                                                                                                            BENCH      PILOT
                                                                                                                            SCALE      SCALE
INCINERATION
(continued)
ENVIRONMENTAL TECHNOLOGY SOUTHEAST
(continued)

HAZANSWERS, INC.
                                                                      NOT  SPECIFIED
                                INTERNATIONAL  PROCESS  RESEARCH  CORP    SOILS
NONVOLATILE METALS

NOT SPECIFIED

HALOGENATED NONVOLATILES
HALOGENATED VOLATILES
INORGANIC CORROSIVES
INORGANIC CYANIDES
NONHALOGENATED VOLATILES
NONVOLATILE METALS
ORGANIC CORROSIVES
ORGANIC CYANIDES
OXIDIZERS
REDUCERS
INP

YES
INP

YES
                                IT CORPORATION
                                                                     SOILS
                                                                     SEDIMENTS
                                JACOBS  ENGINEERING GROUP,  INC.

                                MCNAMEE ADVANCED TECHNOLOGY,  INC.
                                     NOT SPECIFIED

                                     SLUDGES
                                     SOILS
                                MIDWEST RESEARCH INSTITUTE
                                                                     AQUEOUS MEDIA
                                                                     ORGANIC LIQUID
                                                                     SLUDGES
DIOXINS/FURANS
RADIOACTIVE MATERIALS
NONVOLATILE METALS
NONHALOGENATED VOLATILES
PCBs
VOLATILE METALS
HALOGENATED NONVOLATILES
NONHALOGENATED NONVOLATILES

NOT SPECIFIED

HALOGENATED NONVOLATILES
HALOGENATED VOLATILES
ORGANIC CORROSIVES
NONHALOGENATED VOLATILES
NONHALOGENATED NONVOLATILES

PCBs
NONHALOGENATED NONVOLATILES
NONHALOGENATED VOLATILES
                                                                                                                           YES
                                                                                                                                     YES
INP

NO
INP

NO
                                                                                                                           YES
                                                                                                                                     NO

-------
                       TABLE # 2 (CONTINUED)
TREATMENT TECHNOLOGY
INCINERATION
(continued)
COMPANY NAME
MIDWEST RESEARCH INSTITUTE
(continued)
MEDIA TREATED
OTHER SOLIDS
CONTAMINANT GROUPS
HALOGENATED VOLATILES
BENCH
SCALE

PILOT
SCALE

                                                       HALOGENATED  NONVOLATILES
OGDEN ENVIRONMENTAL SERVICES,  INC.
AQUEOUS MEDIA
ORGANIC LIQUID
OTHER SOLIDS
SEDIMENTS
SLUDGES
PCBs
HALOGENATED VOLATILES
HALOGENATED NONVOLATILES
NONHALOGENATED VOLATILES
NONHALOGENATED NONVOLATILES
ORGANIC CORROSIVES
                                                                                           YES
                                                                                                     YES
OHM CORPORATION
                                      SOILS
                                      ORGANIC LIQUID
                                      OTHER SOLIDS
                                      SLUDGES
                 DIOXINS/FURANS
                 HALOGENATED NONVOLATILES
                 HALOGENATED VOLATILES
                 NONHALOGENATED VOLATILES
                 PESTICIDES
                 NONHALOGENATED NONVOLATILES
                 PCBs
                                                                                           YES
                                                                                                     YES
RADIAN CORPORATION
                                      SEDIMENTS
                                      SLUDGES
                                      SOILS
                 PCBS
                 PESTICIDES
                 VOLATILE METALS
                                      ORGANIC LIQUIDS   NONHALOGENATED  VOLATILES
                                                       HALOGENATED  VOLATILES
                                                                                           YES
                                                                                                     YES
RMC ENV & ANALYTICAL LABORATORIES
SEDIMENTS        DIOXINS/FURANS
SLUDGES          HALOGENATED NONVOLATILES
SOILS            HALOGENATED VOLATILES
                 NONHALOGENATED NONVOLATILES
                 NONHALOGENATED VOLATILES
                 NONVOLATILE METALS
                 ORGANIC CORROSIVES
                 ORGANIC CYANIDES
                 PCBs
                 PESTICIDES
                                                      INP
                                                                                                      INP

-------
           TREATMENT TECHNOLOGY
                       TABLE # 2 (CONTINUED)

      COMPANY NAME                    MEDIA TREATED       CONTAMINANT GROUPS
                                                                                                                                       BENCH
                                                                                                                                       SCALE
                                                                                                      PILOT
                                                                                                      SCALE
            INCINERATION
            (continued)
RMT, INC.
                                                                                 AQUEOUS MEDIA
                                                                                 ORGANIC LIQUID
                                                                                 SEDIMENTS
                                                                                 SLUDGES
                                                                                 SOILS
                                                       NONHALOGENATED  VOLATILES
                                                       HALOGENATED  VOLATILES
                                                       ORGANIC  CORROSIVES
                                                       INORGANIC CORROSIVES
                                                       REDUCERS
                                                       PCBs
                                                       HALOGENATED  NONVOLATILES
                                                       NONHALOGENATED  NONVOLATILES
NO
                                                                                                                                                 YES
                                           ROY F. WESTON, INC.
CD
oo
                                      SEDIMENTS         PESTICIDES
                                      SLUDGES           DIOXINS/FURANS
                                      SOILS             NONVOLATILE METALS
                                                       VOLATILE METALS
                                                       PCBs
                                                       HALOGENATED NONVOLATILES
                                                       HALOGENATED VOLATILES
                                                       NONHALOGENATED NONVOLATILES
                                                       NONHALOGENATED VOLATILES
                                                                                            NO
                                                                                                      YES
                                           VERSAR INC.
                                                                                 SEDIMENTS
                                                                                 SLUDGES
                                                                                 SOILS
                                                                                 AQUEOUS MEDIA
                                                                                 ORGANIC LIQUID
                                                      DIOXINS/FURANS
                                                      HALOGENATED VOLATILES
                                                      NONHALOGENATED VOLATILES
                                                      PCBs
                                                      PESTICIDES
                                                      VOLATILE METALS
                                                      HALOGENATED NONVOLATILES
                                                      NONHALOGENATED NONVOLATILES
                                                                                                                                       NO        YES
                                           WESTERN RESEARCH INSTITUTE
                                                                                 AQUEOUS MEDIA
                                                                                 ORGANIC LIQUID
                                                      NONHALOGENATED NONVOLATILES
                                                                                            INP        INP
                                           WOODWARD CLYDE CONSULTANTS
                                                                                 SEDIMENTS
                                                                                 SLUDGES
                                                                                 SOILS
                                                                                 OTHER SOLIDS
                                                                                                  NOT SPECIFIED
                                                                                                                                       YES       YES

-------
TREATMENT TECHNOLOGY
                 TABLE # 2 (CONTINUED)

COMPANY NAME                    MEDIA TREATED       CONTAMINANT  GROUPS
                                                                                                                            BENCH
                                                                                                                            SCALE
                                               PILOT
                                               SCALE
LOW TEMP THERMAL DESORPTION
                                PEI ASSOCIATES, INC.
                                SOILS
HALOGENATED VOLATILES
NONHALOGENATED VOLATILES
VOLATILE METALS
PESTICIDES
PCBs
                                                                                                                            INP
                                                                                                                                      INP
PYROLYSIS
                                PROCEDYNE CORPORATION
                                                                      AQUEOUS MEDIA
                                                                      ORGANIC LIQUID
                                                                      SLUDGES
                                                 HALOGENATED VOLATILES
                                                 NONHALOGENATED  VOLATILES
                                                                                                                            NO
                                                                                                                                      YES
THERMAL COMBUSTION
                                MCNAMEE ADVANCED TECHNOLOGY, INC.
                                OHM CORPORATION
                                AQUEOUS MEDIA    HALOGENATED NONVOLATILES
                                SLUDGES          HALOGENATED VOLATILES
                                                 ORGANIC CORROSIVES
                                                 ORGANIC CYANIDES
                                                 NONHALOGENATED  NONVOLATILES
                                                 NONHALOGENATED  VOLATILES

                                OTHER  SOLIDS     NONHALOGENATED  NONVOLATILES
                                SOIL              HALOGENATED NONVOLATILES
                                SLUDGES          HALOGENATED VOLATILES
                                                 NONHALOGENATED  VOLATILES
                                                                                                                            YES
                                                                                                YES
                                                                                                                            YES
                                                                                                                                      YES
THERMAL DECOMPOSITION
                                APPLIED SURFACE TECHNOLOGY
                                                                      AQUEOUS MEDIA
                                                                      ORGANIC LIQUIDS
                                                                      SLUDGES
                                                                      SOILS
                                                 INORGANIC CORROSIVES
                                                 OXIDIZERS
                                                 HALOGENATED NONVOLATILES
                                                 HALOGENATED VOLATILES
                                                 NONVOLATILE METALS
                                                 ORGANIC CYANIDES
                                                 INORGANIC CYANIDES
                                                                                                                            YES
                                                                                                                                      YES

-------
           TREATMENT TECHNOLOGY
                                                 COMPANY NAME
TABLE # 2 (CONTINUED)

               MEDIA TREATED
                                                                                                     CONTAMINANT GROUPS
                                                                                                                                       BENCH     PILOT
                                                                                                                                       SCALE     SCALE
           THERMAL DESORPTION
                                           PEI ASSOCIATES, INC.

                                           REMEDIATION TECHNOLOGIES
               SOILS

               SEDIMENTS
               SLUDGES
               SOILS
               AQUEOUS MEDIA
               ORGANIC LIQUID
                                                                                                  PESTICIDES
                                                                                                  NONHALOGENATED VOLATILES
                                                                                                                                       IMP
                                                                                                                                       NO
                                                                                                                                                 IMP
                                                                                                                                                 YES
           THERMAL DESTRUCTION
                                           PYROGENICS, INC.
               SOILS             NONHALOGENATED  NONVOLATILES
               OTHER  SOLIDS      NONVOLATILE  METALS
                                VOLATILE  METALS
                                                                                                                                       YES       YES
o
o
           THERMAL FIXATION
                                           C-E ENVIRONMENTAL, INC.
               NOT  SPECIFIED     NOT  SPECIFIED
                                                                     INP        INP
           THERMAL PROCESSING
                                           AAA CSI
                                                                                 SEDIMENTS        HALOGENATED NONVOLATILES
                                                                                 SLUDGES          HALOGENATED VOLATILES
                                                                                 SOILS            INORGANIC CORROSIVES
                                                                                                  NONHALOGENATED NONVOLATILES
                                                                                                  NONHALOGENATED VOLATILES
                                                                                                  NONVOLATILE METALS
                                                                                                  ORGANIC CORROSIVES
                                                                                                  OXIDIZERS
                                                                                                  PCBs
                                                                                                  PESTICIDES
                                                                                                  REDUCERS
                                                                                                  VOLATILE METALS
                                                                                                                                       NO        NO
           THERMAL TREATMENT-NOS
                                           ROY F. WESTON,  INC.
               NOT SPECIFIED
                                HALOGENATED VOLATILES
                                NONHALOGENATED VOLATILES
                                NONVOLATILE METALS
                                                                                                                                       INP
                                                                               INP

-------
TREATMENT TECHNOLOGY
                       TABLE # 2 (CONTINUED)

      COMPANY NAME                    MEDIA TREATED        CONTAMINANT  GROUPS
                                                                                                                           BENCH     PILOT
                                                                                                                           SCALE     SCALE
THERMAL TREATMENT-NOS
(continued)
ROY F.  WESTON,  INC.
(continued)
                                                                                       VOLATILE  METALS
VITRIFICATION
                                AEA TECHNOLOGY
                                C-E ENVIRONMENTAL,  INC.
                                CHEMENCO,  INC.
                                DIVERSIFIED  ENGINEERING,  INC.
                                E M & C ENGINEERING ASSOCIATES
                                      AQUEOUS  MEDIA
                                      ORGANIC  LIQUID
                                      SEDIMENTS
                                      SLUDGES
                                      SOILS

                                      SOILS
                                      SLUDGES

                                      OTHER SOLIDS
                                      SEDIMENTS
                                      SOILS
                                      SLUDGES

                                      SEDIMENTS
                                      SLUDGES
                                      OTHER SOLIDS

                                      SLUDGES
                                      OTHER SOLIDS
                                      SOILS
                                                                                       RADIOACTIVE  MATERIALS
                                                                                           YES       YES
NOT SPECIFIED
NOT SPECIFIED
                                     YES
                                     YES
                                               YES
                                               NO
RADIOACTIVE MATERIALS
DIOXINS/FURANS
HALOGENATED NONVOLAITLES
HALOGENATED VOLATILES
INORGANIC CORROSIVES
INORGANIC CYANIDES
NONVOLATILE METALS
ORGANIC CYANIDES
OXIDIZERS
PCBs
PESTICIDES
REDUCERS
VOLATILE METALS
                                     YES
INP
                                               INP
                                               INP
                                ENSOTECH,  INC.
                                      OTHER  SOLIDS
                                                       HALOGENATED  NONVOLATILES
                                                                                            YES        YES

-------
                       TABLE # 2 (CONTINUED)
TREATMENT TECHNOLOGY

VITRIFICATION
(continued)


COMPANY NAME

ENSOTECH, INC.
(continued)


MEDIA TREATED


SEDIMENTS
SLUDGES
SOILS
CONTAMINANT GROUPS


HALOGENATED VOLATILES
INORGANIC CORROSIVES
INORGANIC CYANIDES
BENCH PILOT
SCALE SCALE




GENERAL PHYSICS CORPORATION

IT CORPORATION


MAECORP, INC.



MCNAMEE ADVANCED TECHNOLOGY,  INC.
PYROGENICS, INC.
RMT, INC.
VERSAR INC.
OTHER SOLIDS

SOILS
SEDIMENTS
SLUDGES
SOILS

SLUDGES
NONHALOGENATED NONVOLATILES
NONHALOGENATED VOLATILES
NONVOLATILE METALS
OXIDIZERS
REDUCERS

RADIOACTIVE MATERIALS

NONVOLATILE METALS
RADIOACTIVE MATERIALS

NOT SPECIFIED
                 HALOGENATED NONVOLATILES
                 REDUCERS
                 INORGANIC CORROSIVES
                 ORGANIC CYANIDES
                 NONHALOGENATED NONVOLATILES
                 RADIOACTIVE MATERIALS
SOILS            NONHALOGENATED NONVOLATILES
OTHER SOLIDS     NONVOLATILE METALS
                 VOLATILE METALS

SEDIMENTS        NOT SPECIFIED
SLUDGES
SOILS

SEDIMENTS        HALOGENATED NONVOLATILES
SLUDGES          HALOGENATED VOLATILES
YES       YES

YES       NO


NO        YES



NO        NO
                                     YES       YES
                                     YES       YES
                                                                                            YES       NO

-------
TREATMENT TECHNOLOGY
                                      COMPANY NAME
                                                       TABLE  # 2  (CONTINUED)

                                                                      MEDIA TREATED
                                                          CONTAMINANT  GROUPS
                                                      BENCH
                                                      SCALE
                                               PILOT
                                               SCALE
VITRIFICATION
(continued)
VERSAR INC.
(continued)
SOILS
NONHALOGENATED NONVOLATILES
NONHALOGENATED VOLATILES
NONVOLATILE METALS
ORGANIC CORROSIVES
ORGANIC CYANIDES
OXIDIZERS
REDUCERS
VOLATILE METALS
WET AIR OXIDATION
                                AAA CSI
                                      AQUEOUS MEDIA
                                      ORGANIC LIQUID
                                AAA CSI
                                      SEDIMENTS
                                      SLUDGES
                                      SOILS
                 HALOGENATED NONVOLATILES
                 HALOGENATED VOLATILES
                 INORGANIC CORROSIVES
                 NONHALOGENATED NONVOLATILES
                 NONHALOGENATED VOLATILES
                 NONVOLATILE METALS
                 ORGANIC CORROSIVES
                 OXIDIZERS
                 PCBs
                 PESTICIDES
                 REDUCERS
                 VOLATILE METALS

                 HALOGENATED NONVOLATILES
                 HALOGENATED VOLATILES
                 INORGANIC CORROSIVES
                 NONHALOGENATED NONVOLATILES
                 NONHALOGENATED VOLATILES
                 NONVOLATILE METALS
                 ORGANIC CORROSIVES
                 OXIDIZERS
                 PCBs
                 PESTICIDES
                 REDUCERS
                 VOLATILE METALS
                                                                                                                            NO
                                                                                                                                      NO
                                                                                                                            NO
                                                                                                                                      NO

-------
TREATMENT TECHNOLOGY
                 TABLE # 2 (CONTINUED)

COMPANY NAME                    MEDIA TREATED       CONTAMINANT  GROUPS
                                                                                                                            BENCH
                                                                                                                            SCALE
                                                                                                PILOT
                                                                                                SCALE
WET AIR OXIDATION
(continued)
                                DIVERSIFIED ENGINEERING,  INC.
                                AQUEOUS  MEDIA
                                ORGANIC  LIQUID
                                SLUDGES
                                SEDIMENTS
HALOGENATED NONVOLATILES
NONVOLATILE METALS
NONHALOGENATED NONVOLATILES
                                                                                      YES
                                                                                                INP
                                E M & C ENGINEERING ASSOCIATES
                                                                      SLUDGES
                                                                      OTHER  SOLIDS
                                                                      SOILS
                                                DIOXINS/FURANS
                                                HALOGENATED  NONVOLATILES
                                                HALOGENATED  VOLAITLES
                                                INORGANIC CORROSIVES
                                                INORGANIC CYANIDES
                                                NONVOLATILE  METALS
                                                ORGANIC  CYANIDES
                                                OXIDIZERS
                                                PCBs
                                                PESTICIDES
                                                REDUCERS
                                                VOLATILE METALS
                                     INP       INP
                                INTERNATIONAL  PROCESS  RESEARCH CORP
                                                                     AQUEOUS MEDIA
                                                                     ORGANIC LIQUID
                                                HALOGENATED NONVOLATILES
                                                HALOGENATED VOLATILES
                                                INORGANIC CORROSIVES
                                                INORGANIC CYANIDES
                                                NONHALOGENATED VOLATILES
                                                NONVOLATILE METALS
                                                ORGANIC CORROSIVES
                                                ORGANIC CYANIDES
                                                OXIDIZERS
                                                REDUCERS
                                     YES       YES
                                IT  CORPORATION
                                                                     AQUEOUS MEDIA
                                                                     ORGANIC LIQUID
                                                HALOGENATED NONVOLATILES
                                                NONHALOGENATED NONVOLATILES
                                                NONHALOGENATED VOLATILES
                                                PCBs
                                                PESTICIDES
                                     YES       NO

-------
TREATMENT TECHNOLOGY
                 TABLE # 2 (CONTINUED)

COMPANY NAME                    MEDIA TREATED       CONTAMINANT  GROUPS
                                                                                                                           BENCH
                                                                                                                           SCALE
                                               PILOT
                                               SCALE
WET AIR OXIDATION
(continued)
                                MCNAMEE ADVANCED TECHNOLOGY,  INC.
                                MCNAMEE ADVANCED  TECHNOLOGY,  INC.
                                RMT,  INC.
                                VERSAR INC.
                                                                      AQUEOUS  MEDIA
                                SLUDGES
                                SOILS
                                AQUEOUS MEDIA
                                AQUEOUS MEDIA
                                ORGANIC LIQUID
                                SEDIMENTS
                                SLUDGES
                                SOILS
                                                                      AQUEOUS MEDIA
HALOGENATED NONVOLATILES
HALOGENATED VOLATILES
ORGANIC CYANIDES
INORGANIC CYANIDES
NONHALOGENATED NONVOLATILES
NONHALOGENATED VOLATILES

HALOGENATED NONVOLATILES
HALOGENATED VOLATILES
ORGANIC CYANIDES
INORGANIC CYANIDES
NONHALOGENATED NONVOLATILES
NONHALOGENATED VOLATILES

HALOGENATED VOLATILES
HALOGENATED NONVOLATILES
NONHALOGENATED NONVOLATILES
NONHALOGENATED VOLATILES
PESTICIDES
INORGANIC CORROSIVES
ORGANIC CYANIDES
ORGANIC CORROSIVES
INORGANIC CYANIDES
REDUCERS

DIOXINS/FURANS
HALOGENATED NONVOLATILES
HALOGENATED VOLATILES
REDUCERS
INORGANIC CYANIDES
NONHALOGENATED NONVOLATILES
NONHALOGENATED VOLATILES
OXIDIZERS
                                                                                                                           YES
                                                                                                                                     YES
                                                                                                                           YES       NO
                                                                                                                            YES       NO
                                                                                                                            YES        NO

-------
TREATMENT TECHNOLOGY
                       TABLE # 2 (CONTINUED)

      COMPANY NAME                    MEDIA TREATED       CONTAMINANT GROUPS
                                                                                                                            BENCH
                                                                                                                            SCALE
                                                                                                      PILOT
                                                                                                      SCALE
WET AIR OXIDATION
(continued)
WESTERN RESEARCH INSTITUTE
                                ZIMPRO PASSAVANT
                                      AQUEOUS MEDIA
                                      ORGANIC LIQUID

                                      AQUEOUS MEDIA
                                      ORGANIC LIQUID
                                      SEDIMENTS
                                      SLUDGES
                                      SOILS
NONHALOGENATED NONVOLATILES
NONHALOGENATED VOLATILES

HALOGENATED VOLATILES
NONHALOGENATED VOLATILES
INORGANIC CYANIDES
ORGANIC CYANIDES
DIOXINS/FURANS
NONHALOGENATED NONVOLATILES
HALOGENATED NONVOLATILES
ORGANIC CORROSIVES
PESTICIDES
INORGANIC CORROSIVES
                                                                                                                            YES
                                                                                                                            YES
                                                                                                                                      NO
                                                                                                                                      YES

-------
TABLE # 3:  SUMMARY LIST OF CONTAMINANT  GROUPS
CONTAMINANT GROUP
ASBESTOS
DIOXINS/FURANS
HALOGENATED NONVOLATILES
HALOGENATED VOLATILES
INORGANIC CORROSIVES
INORGANIC CYANIDES
NONHALOGENATED NONVOLATILES
NONHALOGENATED VOLATILES
NONVOLATILE METALS
ORGANIC CORROSIVES
ORGANIC CYANIDES
OXIDIZERS
PCBs
PESTICIDES
RADIOACTIVE MATERIALS
REDUCERS
VOLATILE METALS
NOT SPECIFIED
PAGE
(IN TABLE # 4)
199
199
202
211
222
226
230
240
249
258
262
267
271
276
281
282
286
290
                     197

-------
               TABLE # 4:   TREATABILITY STUDY VENDORS BY  CONTAMINANT  GROUPS  TREATED
CONTAMINANT GROUP
                                   COMPANY NAME
                                                                            TREATMENT  TECHNOLOGY
ASBESTOS
DIOXINS/FURANS
EARTH TECHNOLOGY CORP.
MARINE POLUTION CONTROL
MARINE POLUTION CONTROL
PLASMA HOLDINGS, N.V.

BIOSCIENCE MANAGEMENT, INC.
BIOSCIENCE MANAGEMENT, INC.
BIOSCIENCE MANAGEMENT, INC.
BIOSCIENCE MANAGEMENT, INC.
BIOSCIENCE MANAGEMENT, INC.
BIOSCIENCE MANAGEMENT, INC.
BIOSCIENCE MANAGEMENT, INC.
C-E ENVIRONMENTAL, INC.
C-E ENVIRONMENTAL, INC.
C-E ENVIRONMENTAL, INC.
C-E ENVIRONMENTAL, INC.
DETOX, INC.
DETOX, INC.
DETOX, INC.
DETOX, INC.
DETOX, INC.
DETOX, INC.
DETOX, INC.
DETOX, INC.
DETOX, INC.
DETOX, INC.
DETOX, INC.
DETOX, INC.
DETOX, INC.
DETOX, INC.
DETOX, INC.
DETOX, INC.
DETOX, INC.
DETOX, INC.
DETOX, INC.
DETOX, INC.
DETOX, INC.
E M & C ENGINEERING ASSOCIATES
E M & C ENGINEERING ASSOCIATES
E M & C ENGINEERING ASSOCIATES
E M & C ENGINEERING ASSOCIATES
E M & C ENGINEERING ASSOCIATES
E M & C ENGINEERING ASSOCIATES
E M & C ENGINEERING ASSOCIATES
E M & C ENGINEERING ASSOCIATES
E M & C ENGINEERING ASSOCIATES
E M & C ENGINEERING ASSOCIATES
E M & C ENGINEERING ASSOCIATES
E M & C ENGINEERING ASSOCIATES
E M & C ENGINEERING ASSOCIATES
STABILIZATION/SOLIDIFICATION
FILTRATION
STABILIZATION/SOLIDIFICATION
SSP-PLASMA SLUDGE

AEROBIC BIOLOGICAL
BIODEGRADATION-COMPOST ING
BIODEGRADATION-SLURRY PHASE
BIODEGRADATI ON-SOL ID PHASE
IN SITU BIODEGRADATION
NEUTRALIZATION
STRIPPING
ACTIVATED CARBON
ADSORPTION
ADSORPTION
AEROBIC BIOLOGICAL
ACTIVATED CARBON
ACTIVATED SLUDGE
ADSORPTION
ANAEROBIC BIOLOGICAL
BIODEGRADATION-COMPOST ING
BIODEGRADATION-SLURRY PHASE
BIODEGRADATION-SOLID PHASE
CHEMICAL EXTRACTION
CHEMICAL OXIDATION
CHEMICAL PRECIPITATION
CHEMICAL REDUCTION
CHEMICAL TREATMENT
CH LOR I NAT I ON
IN SITU BIODEGRADATION
IN SITU SOIL FLUSHING
IN SITU VACUUM & STEAM EXTRACT
IN SITU VITRIFICATION
OZONATION
SOIL WASHING
SOLVENT RECOVERY
STRIPPING
ACTIVATED CARBON
ACTIVATED SLUDGE
ADSORPTION
AEROBIC BIOLOGICAL
ANAEROBIC BIOLOGICAL
BIODEGRADATION-NOS
CATALYSIS
CHEMICAL EXTRACTION
CHEMICAL OXIDATION
CHEMICAL PRECIPITATION
CHEMICAL REDUCTION
CHEMICAL TREATMENT
CHLOR I NAT ION
                                                 199

-------
CONTAMINANT GROUP
TABLE # 4 (CONTINUED)

   COMPANY NAME
                                                                            TREATMENT TECHNOLOGY
DIOXINS/FURANS
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            ENERGY&ENVIRONMENTAL RESEARCH CORP.
                            GENERAL PHYSICS CORPORATION
                            GENERAL PHYSICS CORPORATION
                            GENERAL PHYSICS CORPORATION
                            HUNTER SERVICES, INC.
                            HUNTER SERVICES. INC.
                            HUNTER SERVICES, INC.
                            HUNTER SERVICES, INC.
                            HUNTER SERVICES, INC.
                            HUNTER SERVICES, INC.
                            HUNTER SERVICES, INC.
                            HUNTER SERVICES, INC.
                            HUNTER SERVICES, INC.
                            HUNTER SERVICES, INC.
                            HUNTER SERVICES, INC.
                            HUNTER SERVICES, INC.
                            HUNTER SERVICES, INC.
                            I IT RESEARCH INST
                            I IT RESEARCH INST
                            I IT RESEARCH INST
                            I IT RESEARCH INST
                            IT CORPORATION
                            IT CORPORATION
                            IT CORPORATION
                            IT CORPORATION
                            IT CORPORATION
                            IT CORPORATION
                            IT CORPORATION
                            KEYSTONE ENVIRONMENTAL RESOURCES
                            KEYSTONE ENVIRONMENTAL RESOURCES
                            MAECORP, INC.
                            MAECORP, INC.
                            O'BRIEN AND GERE ENGINEERS, INC.
                            O'BRIEN AND GERE ENGINEERS, INC.
                            O'BRIEN AND GERE ENGINEERS, INC.
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
                                     CRYSTALLIZATION
                                     IN SITU SOIL FLUSHING
                                     INCINERATION
                                     ION EXCHANGE
                                     LIQUID-LIQUID EXTRACTION
                                     LOU TEMP THERMAL STRIPPING
                                     NEUTRALIZATION
                                     OZONATION
                                     REVERSE OSMOSIS
                                     SOLVENT RECOVERY
                                     STABILIZATION
                                     STRIPPING
                                     VITRIFICATION
                                     WET AIR OXIDATION
                                     INCINERATION
                                     ACTIVATED CARBON
                                     ADSORPTION
                                     IN SITU BIODEGRADATION
                                     ACTIVATED SLUDGE
                                     ADSORPTION
                                     ADSORPTION
                                     CHEMICAL OXIDATION
                                     CHEMICAL OXIDATION
                                     CHEMICAL PRECIPITATION
                                     CHEMICAL PRECIPITATION
                                     COAGULATION/FLOCCULATION
                                     COAGULATION/FLOCCULATION
                                     LOW TEMP THERMAL STRIPPING
                                     OZONATION
                                     STABILIZATION/SOLIDIFICATION
                                     STRIPPING
                                     CHEMICAL EXTRACTION
                                     CHEMICAL TREATMENT
                                     IN SITU RADIO FREQUENCY HTG
                                     UV/OZONAT10N
                                     CATALYSIS
                                     CHEMICAL EXTRACTION
                                     CHEMICAL TREATMENT
                                     INCINERATION
                                     LIQUID-LIQUID EXTRACTION
                                     LOW TEMP THERMAL STRIPPING
                                     SOIL WASHING
                                     ACTIVATED CARBON
                                     OZONATION
                                     ACTIVATED CARBON
                                     ADSORPTION/ABSORPTION
                                     CATALYSIS
                                     SOIL WASHING
                                     UV/PHOTOLYSIS
                                     ACTIVATED CARBON
                                     ACTIVATED SLUDGE
                                     ADSORPTION
                                     AEROBIC BIOLOGICAL
                                                 200

-------
CONTAMINANT GROUP
                                TABLE # 4 (CONTINUED)

                                   COMPANY NAME
       TREATMENT TECHNOLOGY
DIOXINS/FURANS
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
                            PEI ASSOCIATES, INC.
                            PETROLEUM TESTING SERVICE, INC.
                            PLASMA HOLDINGS, N.V.
                            RADIAN CORPORATION
                            RADIAN CORPORATION
                            RMC ENV & ANALYTICAL LABORATORIES
                            RMC ENV & ANALYTICAL LABORATORIES
                            RMC ENV & ANALYTICAL LABORATORIES
                            RMC ENV & ANALYTICAL LABORATORIES
                            RMC ENV & ANALYTICAL LABORATORIES
                            RMC ENV & ANALYTICAL LABORATORIES
                            RMC ENV & ANALYTICAL LABORATORIES
                            ROY F. WESTON,  INC.
                            ROY F. WESTON,  INC.
                            ROY F. WESTON,  INC.
                            ROY F. WESTON,  INC.
                            ROY F. WESTON,  INC.
                            ROY F. WESTON,  INC.
                            ROY F. WESTON,  INC.
                            ROY F. WESTON,  INC.
                            ROY F. WESTON,  INC.
                            ROY F. WESTON,  INC.
                            ROY F. WESTON,  INC.
                            ROY F. WESTON,  INC.
                            ROY F. WESTON,  INC.
                            ROY F. WESTON,  INC.
                            ROY F. WESTON,  INC.
                            ROY F. WESTON,  INC.
                            ROY F. WESTON,  INC.
                            ROY F. WESTON,  INC.
                            ROY F. WESTON,  INC.
                            ROY F. WESTON,  INC.
                            ROY F. WESTON,  INC.
                            ROY F. UESTON,  INC.
                            ROY F. WESTON,  INC.
                            ROY F. WESTON,  INC.
                            ROY F. WESTON,  INC.
                            ROY F. WESTON,  INC.
                            ROY F. WESTON,  INC.
                            ROY F. WESTON,  INC.
                            ROY F. WESTON,  INC.
                            ROY F. WESTON,  INC.
                            ROY F. WESTON,  INC.
ANAEROBIC BIOLOGICAL
BIODEGRADATION-NOS
CHEMICAL OXIDATION
CHEMICAL PRECIPITATION
CHEMICAL TREATMENT
DEWATERING
IN SITU BIODEGRADATION
IN SITU BIODEGRADATION
INCINERATION
STABILIZATION/SOLIDIFICATION
STABILIZATION/SOLIDIFICATION
IN SITU VACUUM & STEAM EXTRACT
SSP-PLASMA SLUDGE
ACTIVATED SLUDGE
ANAEROBIC BIOLOGICAL
CHEMICAL EXTRACTION
CHEMICAL TREATMENT
IN SITU VACUUM & STEAM EXTRACT
IN SITU VITRIFICATION
INCINERATION
SOIL WASHING
STABILIZATION/SOLIDIFICATION
ACTIVATED CARBON
ACTIVATED SLUDGE
AEROBIC BIOLOGICAL
ANAEROBIC BIOLOGICAL
BIODEGRADATION-COMPOST ING
BIODEGRADATION-SLURRY PHASE
BIODEGRADATION-SOLID PHASE
CENTRIFUGATION
CHEMICAL EXTRACTION
CHEMICAL OXIDATION
CHEMICAL PRECIPITATION
CHEMICAL REDUCTION
CHEMICAL TREATMENT
CHLORINATION
COAGULATION/F LOCCULAT ION
FILTRATION
FILTRATION
FLOTATION THICKENING
GRAVITY THICKENING
IN SITU BIODEGRADATION
IN SITU RADIO FREQUENCY HTG
IN SITU SOIL FLUSHING
IN SITU VACUUM & STEAM EXTRACT
INCINERATION
ION EXCHANGE
LOW TEMP THERMAL STRIPPING
NEUTRALIZATION
OZONATION
SEDIMENTATION
SOIL WASHING
STABILIZATION/SOLIDIFICATION
                                                 201

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CONTAMINANT GROUP
                                TABLE # 4 (CONTINUED)

                                   COMPANY NAME
       TREATMENT TECHNOLOGY
DIOXINS/FURANS
                            ROY F. WESTON, INC.
                            S-CUBED
                            THORNE ENVIRONMENTAL. INC.
                            THORNE ENVIRONMENTAL, INC.
                            THORNE ENVIRONMENTAL, INC.
                            THORNE ENVIRONMENTAL, INC.
                            THORNE ENVIRONMENTAL, INC.
                            VERSAR INC.
                            VERSAR INC.
                            VERSAR INC.
                            VERSAR INC.
                            ZENON ENVIRONMENTAL
                            ZENON ENVIRONMENTAL
                            ZENON ENVIRONMENTAL
                            ZENON ENVIRONMENTAL
                            ZIMPRO PASSAVANT
STRIPPING
LIQUID-LIQUID EXTRACTION
BIODEGRADATION-SLURRY PHASE
BIODEGRADATION-SOLID PHASE
IN SITU BIODEGRADATION
IN SITU SOIL FLUSHING
UV/DEEP TREATMENT
ADSORPTION
INCINERATION
PACT
WET AIR OXIDATION
ACTIVATED CARBON
ACTIVATED SLUDGE
BIODEGRADATION-NOS
REVERSE OSMOSIS
WET AIR OXIDATION
HALOGENATED NONVOLATILES
                            AAA CSI
                            AAA CSI
                            AAA CSI
                            AAA CSI
                            AAA CSI
                            AAA CSI
                            AAA CSI
                            AAA CSI
                            AAA CSI
                            AAA CSI
                            AAA CSI
                            AAA CSI
                            AAA CSI
                            AAA CSI
                            AAA CSI
                            AAA CSI
                            AAA CSI
                            AAA CSI
                            AAA CSI
                            AAA CSI
                            AAA CSI
                            AAA CSI
                            AAA CSI
                            ANDCO ENVIRONMENTAL PROCESSES, INC.
                            APPLIED SURFACE TECHNOLOGY
                            APPLIED SURFACE TECHNOLOGY
                            APPLIED SURFACE TECHNOLOGY
                            APPLIED SURFACE TECHNOLOGY
                            APPLIED SURFACE TECHNOLOGY
                            APPLIED SURFACE TECHNOLOGY
                            APPLIED SURFACE TECHNOLOGY
                            APPLIED SURFACE TECHNOLOGY
                            APPLIED SURFACE TECHNOLOGY
                            APPLIED SURFACE TECHNOLOGY
                            APPLIED SURFACE TECHNOLOGY
                            APPLIED SURFACE TECHNOLOGY
ACTIVATED CARBON
ADSORPTION
CATALYSIS
CENTRIFUGATION
CHEMICAL EXTRACTION
CHEMICAL OXIDATION
CHEMICAL PRECIPITATION
CHEMICAL REDUCTION
CHEMICAL TREATMENT
CRYSTALLIZATION
FILTRATION
IN SITU VACUUM & STEAM EXTRACT
INCINERATION
INCINERATION
LIQUID-LIQUID EXTRACTION
LOW TEMP THERMAL STRIPPING
NEUTRALIZATION
SOLVENT RECOVERY
STABILIZATION/SOLIDIFICATION
STRIPPING
THERMAL PROCESSING
WET AIR OXIDATION
WET AIR OXIDATION
ELECTROCHEMICAL
ACTIVATED CARBON
ADSORPTION
CATALYSIS
CHEMICAL EXTRACTION
CHEMICAL OXIDATION
CHEMICAL PRECIPITATION
CHEMICAL TREATMENT
CHLORINATION
CRYSTALLIZATION
ELECTRODIALYSIS
ELECTROLYSIS
FLUID-BED STRIPPING
                                                 202

-------
CONTAMINANT GROUP
                                TABLE # 4 (CONTINUED)

                                   COMPANY NAME
       TREATMENT TECHNOLOGY
HALOGENATED NONVOLATILES
                            APPLIED SURFACE TECHNOLOGY
                            APPLIED SURFACE TECHNOLOGY
                            APPLIED SURFACE TECHNOLOGY
                            APPLIED SURFACE TECHNOLOGY
                            APPLIED SURFACE TECHNOLOGY
                            APPLIED SURFACE TECHNOLOGY
                            APPLIED SURFACE TECHNOLOGY
                            APPLIED SURFACE TECHNOLOGY
                            APPLIED SURFACE TECHNOLOGY
                            APPLIED SURFACE TECHNOLOGY
                            APPLIED SURFACE TECHNOLOGY
                            BIOSCIENCE MANAGEMENT, INC.
                            BIOSCIENCE MANAGEMENT, INC.
                            BIOSCIENCE MANAGEMENT, INC.
                            BIOSCIENCE MANAGEMENT, INC.
                            BIOSCIENCE MANAGEMENT, INC.
                            BIOSCIENCE MANAGEMENT, INC.
                            BIOSCIENCE MANAGEMENT, INC.
                            BIOTROL, INC.
                            BIOTROL, INC.
                            C-E ENVIRONMENTAL, INC.
                            C-E ENVIRONMENTAL, INC.
                            C-E ENVIRONMENTAL, INC.
                            C-E ENVIRONMENTAL, INC.
                            C-E ENVIRONMENTAL, INC.
                            C-E ENVIRONMENTAL, INC.
                            C-EE BIOREMEDIATION SYSTEMS
                            C-EE BIOREMEDIATION SYSTEMS
                            C-EE BIOREMEDIATION SYSTEMS
                            C-EE BIOREMEDIATION SYSTEMS
                            C-EE BIOREMEDIATION SYSTEMS
                            C-EE BIOREMEDIATION SYSTEMS
                            C-EE BIOREMEDIATION SYSTEMS
                            C-EE BIOREMEDIATION SYSTEMS
                            C-EE BIOREMEDIATION SYSTEMS
                            C-EE BIOREMEDIATION SYSTEMS
                            C-EE BIOREMEDIATION SYSTEMS
                            C-EE BIOREMEDIATION SYSTEMS
                            C-EE BIOREMEDIATION SYSTEMS
                            C-EE BIOREMEDIATION SYSTEMS
                            C-EE BIOREMEDIATION SYSTEMS
                            C-EE BIOREMEDIATION SYSTEMS
                            DETOX,  INC.
                            DETOX,  INC.
                            DETOX,  INC.
                            DETOX,  INC.
                            DETOX,  INC.
                            DETOX,  INC.
                            DETOX,  INC.
                            DETOX,  INC.
                            DETOX,  INC.
                            DETOX,  INC.
                            DETOX,  INC.
IN SITU SOIL FLUSHING
ION EXCHANGE
LOW TEMP THERMAL STRIPPING
OZONATION
REVERSE OSMOSIS
SOIL WASHING
SOLIDIFICATION
STABILIZATION
STRIPPING
THERMAL DECOMPOSITION
ULTRAFILTRATION
AEROBIC BIOLOGICAL
BIODEGRADATION-COMPOST ING
BIODEGRADATION-SLURRY PHASE
BIODEGRADATION-SOLID PHASE
IN SITU BIODEGRADATION
NEUTRALIZATION
STRIPPING
BIODEGRADATION-AQUEOUS PHASE
BIODEGRADATION-LAND FARMING
ACTIVATED CARBON
ADSORPTION
ADSORPTION
AEROBIC BIOLOGICAL
IN SITU BIODEGRADATION
ION EXCHANGE
ACTIVATED CARBON
ACTIVATED SLUDGE
ADSORPTION
AEROBIC BIOLOGICAL
ANAEROBIC BIOLOGICAL
BIODEGRADATION-SOLID PHASE
CHEMICAL EXTRACTION
IN SITU BIODEGRADATION
IN SITU SOIL  FLUSHING
IN SITU VACUUM & STEAM EXTRACT
LIQUID-LIQUID EXTRACTION
LOW TEMP THERMAL STRIPPING
NEUTRALIZATION
NEUTRALIZATION
SOIL WASHING
STRIPPING
ACTIVATED CARBON
ACTIVATED SLUDGE
ADSORPTION
ANAEROBIC BIOLOGICAL
BIODEGRADATION-COMPOSTING
BIODEGRADATION-SLURRY PHASE
BIODEGRADATION-SOLID PHASE
CHEMICAL EXTRACTION
CHEMICAL OXIDATION
CHEMICAL PRECIPITATION
CHEMICAL REDUCTION
                                                 203

-------
CONTAMINANT GROUP
                                TABLE # 4 (CONTINUED)

                                   COMPANY NAME
       TREATMENT TECHNOLOGY
HALOGENATED NONVOLATILES
                            DETOX. INC.
                            DETOX, INC.
                            DETOX, INC.
                            DETOX, INC.
                            DETOX, INC.
                            DETOX, INC.
                            DETOX, INC.
                            DETOX, INC.
                            DETOX, INC.
                            DETOX, INC.
                            DIVERSIFIED ENGINEERING, INC.
                            DIVERSIFIED ENGINEERING, INC.
                            DIVERSIFIED ENGINEERING, INC.
                            DIVERSIFIED ENGINEERING, INC.
                            DIVERSIFIED ENGINEERING, INC.
                            DIVERSIFIED ENGINEERING, INC.
                            DIVERSIFIED ENGINEERING, INC.
                            DIVERSIFIED ENGINEERING, INC.
                            DIVERSIFIED ENGINEERING, INC.
                            DIVERSIFIED ENGINEERING, INC.
                            DIVERSIFIED ENGINEERING, INC.
                            DIVERSIFIED ENGINEERING, INC.
                            DIVERSIFIED ENGINEERING, INC.
                            DIVERSIFIED ENGINEERING, INC.
                            DIVERSIFIED ENGINEERING, INC.
                            DIVERSIFIED ENGINEERING, INC.
                            DIVERSIFIED ENGINEERING, INC.
                            DIVERSIFIED ENGINEERING, INC.
                            DIVERSIFIED ENGINEERING, INC.
                            DIVERSIFIED ENGINEERING, INC.
                            DIVERSIFIED ENGINEERING, INC.
                            DIVERSIFIED ENGINEERING, INC.
                            DIVERSIFIED ENGINEERING, INC.
                            DIVERSIFIED ENGINEERING, INC.
                            DIVERSIFIED ENGINEERING, INC.
                            DIVERSIFIED ENGINEERING, INC.
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
CHEMICAL TREATMENT
CHLORINATIOH
IN SITU BIODEGRADATION
IN SITU SOIL FLUSHING
IN SITU VACUUM & STEAM EXTRACT
IN SITU VITRIFICATION
OZONATION
SOIL WASHING
SOLVENT RECOVERY
STRIPPING
ACTIVATED CARBON ADSORPTION
ACTIVATED SLUDGE
AEROBIC BIOLOGICAL
ANAEROBIC BIOLOGICAL
CEMENT SOLIDIFICATION
CENTRIFUGATION
CHEMICAL OXIDATION
CHEMICAL PRECIPITATION
CHEMICAL REDUCTION
COAGULATION
FILTRATION
FLOCCULAT10N SETTLING
GRAVITY (OIL/WATER)
ION EXCHANGE
LIME SOLIDIFICATION
LIQUID-LIQUID EXTRACTION
NEUTRALIZATION
ORGANIC POLYMER SOLIDIFICATION
RESIN ADSORPTION
ROTATING BIOLOGICAL CONTACTORS
SEDIMENTATION
SORBENTS SOLIDIFICATION
THERMOPLASTIC SOLIDIFICATION
TRICKLING FILTERS
ULTRAFILTRATION
WET AIR OXIDATION
ACTIVATED CARBON
ACTIVATED SLUDGE
ADSORPTION
AEROBIC BIOLOGICAL
ANAEROBIC BIOLOGICAL
BIODEGRADATION-NOS
CATALYSIS
CHEMICAL EXTRACTION
CHEMICAL OXIDATION
CHEMICAL PRECIPITATION
CHEMICAL REDUCTION
CHEMICAL TREATMENT
CHLORINATION
CRYSTALLIZATION
IN SITU SOIL FLUSHING
INCINERATION
ION EXCHANGE
                                                 204

-------
CONTAMINANT GROUP
                                TABLE # 4 (CONTINUED)

                                   COMPANY NAME
       TREATMENT TECHNOLOGY
HALOGENATED NONVOLATILES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            EARTH TECHNOLOGY CORP.
                            EARTH TECHNOLOGY CORP.
                            ENERGY&ENVIRONMENTAL RESEARCH CORP.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENVIRONMENTAL RESOURCE ASSOCIATES
                            ENVIRONMENTAL RESOURCE ASSOCIATES
                            ENVIRONMENTAL RESOURCE ASSOCIATES
                            ENVIRONMENTAL RESOURCE ASSOCIATES
                            ENVIRONMENTAL RESOURCE ASSOCIATES
                            ENVIRONMENTAL RESOURCE ASSOCIATES
                            ENVIRONMENTAL RESOURCE ASSOCIATES
                            ENVIRONMENTAL RESOURCE ASSOCIATES
                            ENVIRONMENTAL TECHNOLOGY SOUTHEAST
                            ENVIRONMENTAL TECHNOLOGY SOUTHEAST
                            ENVIRONMENTAL TECHNOLOGY SOUTHEAST
                            ENVIRONMENTAL TECHNOLOGY SOUTHEAST
                            ENVIRONMENTAL TECHNOLOGY SOUTHEAST
                            ENVIRONMENTAL TECHNOLOGY SOUTHEAST
                            ENVIRONMENTAL TECHNOLOGY SOUTHEAST
                            ENVIRONMENTAL TECHNOLOGY SOUTHEAST
                            ENVIRONMENTAL TECHNOLOGY SOUTHEAST
                            ENVIRONMENTAL TECHNOLOGY SOUTHEAST
LIQUID-LIQUID EXTRACTION
LOW TEMP THERMAL STRIPPING
NEUTRALIZATION
OZONATION
REVERSE OSMOSIS
SOLVENT RECOVERY
STABILIZATION
STRIPPING
WET AIR OXIDATION
ACTIVATED CARBON
STABILIZATION/SOLIDIFICATION
INCINERATION
ACTIVATED SLUDGE
ADSORPTION
BIODEGRADATION-NOS
BICOEGRADATION-NOS
CHEMICAL EXTRACTION
CHEMICAL OXIDATION
CHEMICAL PRECIPITATION
CHEMICAL REDUCTION
CHEMICAL TREATMENT
CHLORINATION
FILTRATION
IN SITU BIOOEGRADATION
IN SITU SOIL FLUSHING
IN SITU VACUUM & STEAM EXTRACT
INCINERATION
ION EXCHANGE
LOW TEMP THERMAL STRIPPING
NEUTRALIZATION
SOIL WASHING
STABILIZATION/SOLIDIFICATION
STABILIZATION/SOLIDIFICATION
STRIPPING
VITRIFICATION
ACTIVATED CARBON
ACTIVATED SLUDGE
AEROBIC BIOLOGICAL
CHEMICAL OXIDATION
CHEMICAL PRECIPITATION
CHEMICAL REDUCTION
NEUTRALIZATION
STRIPPING
ACTIVATED CARBON
ACTIVATED SLUDGE
AEROBIC BIOLOGICAL
BIODEGRADATION-COMPOSTING
BIODEGRADATION-SLURRY PHASE
BIODEGRADATION-SOLID PHASE
CHEMICAL OXIDATION
CHEMICAL PRECIPITATION
CHEMICAL REDUCTION
CHLORINATION
                                                 205

-------
CONTAMINANT GROUP
                                TABLE # 4 (CONTINUED)

                                   COMPANY NAME
       TREATMENT TECHNOLOGY
HALOGENATED NONVOLATILES
                            ENVIRONMENTAL TECHNOLOGY SOUTHEAST
                            ENVIRONMENTAL TECHNOLOGY SOUTHEAST
                            ENVIRONMENTAL TECHNOLOGY SOUTHEAST
                            ENVIRONMENTAL TECHNOLOGY SOUTHEAST
                            ENVIRONMENTAL TECHNOLOGY SOUTHEAST
                            ENVIRONMENTAL TECHNOLOGY SOUTHEAST
                            ENVIRONMENTAL TECHNOLOGY SOUTHEAST
                            ENVIRONMENTAL TECHNOLOGY SOUTHEAST
                            ENVIROTECH MID-ATLANTIC
                            ENVIROTECH MID-ATLANTIC
                            ENVIROTECH MID-ATLANTIC
                            ENVIROTECH MID-ATLANTIC
                            ENVIROTECH MID-ATLANTIC
                            ENVIROTECH MID-ATLANTIC
                            ENVIROTECH MID-ATLANTIC
                            ENVIROTECH MID-ATLANTIC
                            ENVIROTECH MID-ATLANTIC
                            ENVIROTECH MID-ATLANTIC
                            ENVIROTECH MID-ATLANTIC
                            ENVIROTECH MID-ATLANTIC
                            ENVIROTECH MID-ATLANTIC
                            GENERAL PHYSICS CORPORATION
                            GENERAL PHYSICS CORPORATION
                            GENERAL PHYSICS CORPORATION
                            GENERAL PHYSICS CORPORATION
                            GENERAL PHYSICS CORPORATION
                            GENERAL PHYSICS CORPORATION
                            GENERAL PHYSICS CORPORATION
                            GENERAL PHYSICS CORPORATION
                            GENERAL PHYSICS CORPORATION
                            GENERAL PHYSICS CORPORATION
                            HUNTER SERVICES, INC.
                            HUNTER SERVICES, INC.
                            HUNTER SERVICES, INC.
                            HUNTER SERVICES, INC.
                            HUNTER SERVICES, INC.
                            HUNTER SERVICES, INC.
                            HUNTER SERVICES, INC.
                            HUNTER SERVICES, INC.
                            HUNTER SERVICES, INC.
                            HUNTER SERVICES, INC.
                            HUNTER SERVICES, INC.
                            HUNTER SERVICES, INC.
                            HUNTER SERVICES, INC.
                            HUNTER SERVICES, INC.
                            I IT RESEARCH INST
                            IIT RESEARCH INST
                            I IT RESEARCH INST
                            IIT RESEARCH INST
                            INTERNATIONAL PROCESS RESEARCH CORP
                            INTERNATIONAL PROCESS RESEARCH CORP
                            INTERNATIONAL PROCESS RESEARCH CORP
                            INTERNATIONAL PROCESS RESEARCH CORP
IN SITU BIODEGRADATION
IN SITU SOIL FLUSHING
IN SITU VACUUM & STEAM EXTRACT
INCINERATION
ION EXCHANGE
NEUTRALIZATION
SOIL WASHING
STRIPPING
ACTIVATED SLUDGE
ADSORPTION
AEROBIC BIOLOGICAL
ANAEROBIC BIOLOGICAL
BIODEGRADATION-SLURRY PHASE
BIODEGRADATION-SOLID PHASE
CHEMICAL EXTRACTION
CHEMICAL TREATMENT
IN SITU BIODEGRADATION
IN SITU SOIL FLUSHING
IN SITU VACUUM & STEAM EXTRACT
ION EXCHANGE
SOIL WASHING
ACTIVATED CARBON
ACTIVATED SLUDGE
ADSORPTION
AEROBIC BIOLOGICAL
ANAEROBIC BIOLOGICAL
CHEMICAL OXIDATION
CHEMICAL REDUCTION
LIQUID-LIQUID EXTRACTION
OZONATION
STRIPPING
ACTIVATED SLUDGE
ADSORPTION
ADSORPTION
CHEMICAL OXIDATION
CHEMICAL OXIDATION
CHEMICAL PRECIPITATION
CHEMICAL PRECIPITATION
COAGULAT ION/F LOCCULATI ON
COAGULAT ION/FLOCCULATION
LOW TEMP THERMAL STRIPPING
NEUTRALIZATION
OZONATION
STABILIZATION/SOLIDIFICATION
STRIPPING
CHEMICAL EXTRACTION
CHEMICAL TREATMENT
STABILIZATION/SOLIDIFICATION
UV/OZONATION
ACTIVATED CARBON
ADSORPTION
AEROBIC BIOLOGICAL
ANAEROBIC BIOLOGICAL
                                                 206

-------
CONTAMINANT GROUP
                                TABLE # 4 (CONTINUED)

                                   COMPANY NAME
       TREATMENT TECHNOLOGY
HALOGENATED NONVOLATILES
                            INTERNATIONAL PROCESS RESEARCH CORP
                            INTERNATIONAL PROCESS RESEARCH CORP
                            INTERNATIONAL PROCESS RESEARCH CORP
                            INTERNATIONAL PROCESS RESEARCH CORP
                            INTERNATIONAL PROCESS RESEARCH CORP
                            INTERNATIONAL PROCESS RESEARCH CORP
                            INTERNATIONAL PROCESS RESEARCH CORP
                            INTERNATIONAL PROCESS RESEARCH CORP
                            INTERNATIONAL PROCESS RESEARCH CORP
                            INTERNATIONAL PROCESS RESEARCH CORP
                            INTERNATIONAL PROCESS RESEARCH CORP
                            INTERNATIONAL PROCESS RESEARCH CORP
                            INTERNATIONAL PROCESS RESEARCH CORP
                            INTERNATIONAL PROCESS RESEARCH CORP
                            INTERNATIONAL PROCESS RESEARCH CORP
                            INTERNATIONAL PROCESS RESEARCH CORP
                            INTERNATIONAL PROCESS RESEARCH CORP
                            INTERNATIONAL PROCESS RESEARCH CORP
                            INTERNATIONAL PROCESS RESEARCH CORP
                            IT CORPORATION
                            IT CORPORATION
                            IT CORPORATION
                            IT CORPORATION
                            IT CORPORATION
                            IT CORPORATION
                            IT CORPORATION
                            IT CORPORATION
                            IT CORPORATION
                            JACOBS ENGINEERING GROUP, INC.
                            JACOBS ENGINEERING GROUP, INC.
                            JACOBS ENGINEERING GROUP, INC.
                            JACOBS ENGINEERING GROUP, INC.
                            KEYSTONE ENVIRONMENTAL RESOURCES
                            KEYSTONE ENVIRONMENTAL RESOURCES
                            KEYSTONE ENVIRONMENTAL RESOURCES
                            KEYSTONE ENVIRONMENTAL RESOURCES
                            KEYSTONE ENVIRONMENTAL RESOURCES
                            KEYSTONE ENVIRONMENTAL RESOURCES
                            KEYSTONE ENVIRONMENTAL RESOURCES
                            KEYSTONE ENVIRONMENTAL RESOURCES
                            KEYSTONE ENVIRONMENTAL RESOURCES
                            KEYSTONE ENVIRONMENTAL RESOURCES
                            KIBER ASSOCIATES, INC.
                            KIBER ASSOCIATES, INC.
                            KIBER ASSOCIATES, INC.
                            KIBER ASSOCIATES, INC.
                            KIBER ASSOCIATES, INC.
                            MAECORP, INC.
                            MCNAMEE ADVANCED TECHNOLOGY, INC.
                            MCNAMEE ADVANCED TECHNOLOGY, INC.
                            MCNAMEE ADVANCED TECHNOLOGY, INC.
                            MCNAMEE ADVANCED TECHNOLOGY, INC.
                            MCNAMEE ADVANCED TECHNOLOGY, INC.
BIODEGRADATION-NOS
CHEMICAL EXTRACTION
CHEMICAL OXIDATION
CHEMICAL PRECIPITATION
CHEMICAL REDUCTION
CHEMICAL TREATMENT
CHLORINATION
CRYSTALLIZATION
IN SITU BIODEGRADATION
INCINERATION
ION EXCHANGE
LIQUID-LIQUID EXTRACTION
NEUTRALIZATION
OZONATION
SOIL WASHING
SOLVENT RECOVERY
STABILIZATION/SOLIDIFICATION
STRIPPING
WET AIR OXIDATION
ACTIVATED CARBON
CATALYSIS
CHEMICAL EXTRACTION
CHEMICAL OXIDATION
INCINERATION
LOW TEMP THERMAL STRIPPING
REVERSE OSMOSIS
STABILIZATION/SOLIDIFICATION
WET AIR OXIDATION
ACTIVATED SLUDGE
AEROBIC BIOLOGICAL
CHEMICAL OXIDATION
LIQUID-LIQUID EXTRACTION
ACTIVATED CARBON
ACTIVATED SLUDGE
AEROBIC BIOLOGICAL
BIODEGRADATION-SOLID PHASE
COAGULATION/F LOCCULATION
DISSOLVED AIR FLOTATION
FILTRATION/NEUTRALIZ/PRECIPIT.
IN SITU BIODEGRADATION
OZONATION
SOIL WASHING
ACTIVATED CARBON
CHEMICAL PRECIPITATION
STABILIZATION/SOLIDIFICATION
STABILIZATION/SOLIDIFICATION
STABILIZATION/SOLIDIFICATION
CHEMICAL EXTRACTION
ACTIVATED CARBON
ACTIVATED SLUDGE
ADSORPTION
AEROBIC BIOLOGICAL
ANAEROBIC BIOLOGICAL
                                                 207

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CONTAMINANT GROUP
TABLE # 4 (CONTINUED)

   COMPANY NAME
                                                                            TREATMENT TECHNOLOGY
HALOGENATED NONVOLATILES
                            MCNAMEE ADVANCED TECHNOLOGY, INC.
                            MCNAMEE ADVANCED TECHNOLOGY, INC.
                            MCNAMEE ADVANCED TECHNOLOGY, INC.
                            MCNAMEE ADVANCED TECHNOLOGY, INC.
                            MCNAMEE ADVANCED TECHNOLOGY, INC.
                            MCNAMEE ADVANCED TECHNOLOGY, INC.
                            MCNAMEE ADVANCED TECHNOLOGY, INC.
                            MCNAMEE ADVANCED TECHNOLOGY, INC.
                            MCNAMEE ADVANCED TECHNOLOGY, INC.
                            MCNAMEE ADVANCED TECHNOLOGY, INC.
                            MCNAMEE ADVANCED TECHNOLOGY, INC.
                            MCNAMEE ADVANCED TECHNOLOGY, INC.
                            MCNAMEE ADVANCED TECHNOLOGY, INC.
                            MCNAMEE ADVANCED TECHNOLOGY, INC.
                            MCNAMEE ADVANCED TECHNOLOGY, INC.
                            MCNAMEE ADVANCED TECHNOLOGY, INC.
                            MIDWEST RESEARCH INSTITUTE
                            MIDWEST RESEARCH INSTITUTE
                            MIDWEST RESEARCH INSTITUTE
                            MIDWEST RESEARCH INSTITUTE
                            O'BRIEN AND GERE ENGINEERS, INC.
                            O'BRIEN AND GERE ENGINEERS, INC.
                            O'BRIEN AND GERE ENGINEERS, INC.
                            O'BRIEN AND GERE ENGINEERS, INC.
                            O'BRIEN AND GERE ENGINEERS, INC.
                            O'BRIEN AND GERE ENGINEERS, INC.
                            O'BRIEN AND GERE ENGINEERS, INC.
                            O'BRIEN AND GERE ENGINEERS, INC.
                            O'BRIEN AND GERE ENGINEERS, INC.
                            O'BRIEN AND GERE ENGINEERS, INC.
                            O'BRIEN AND GERE ENGINEERS, INC.
                            OGDEN ENVIRONMENTAL SERVICES,  INC.
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
                                     BIODEGRADATION-COMPOST ING
                                     BIODEGRADATION-SLURRY PHASE
                                     BIODEGRADATION-SOLID PHASE
                                     CHEMICAL EXTRACTION
                                     CHEMICAL OXIDATION
                                     CHEMICAL TREATMENT
                                     CHLORI NAT ION
                                     INCINERATION
                                     LIQUID-LIQUID EXTRACTION
                                     PACT
                                     SOLVENT RECOVERY
                                     THERMAL COMBUSTION
                                     UV/OXIDATION
                                     VITRIFICATION
                                     WET AIR OXIDATION
                                     WET AIR OXIDATION
                                     ACTIVATED CARBON
                                     BIODEGRADATION-NOS
                                     COMBUSTOR EQUIPPED W/MASS SPEC
                                     INCINERATION
                                     ACTIVATED CARBON
                                     ACTIVATED SLUDGE
                                     ADSORPTION
                                     AEROBIC BIOLOGICAL
                                     IN SITU BIODEGRADATI ON
                                     IN SITU SOIL FLUSHING
                                     LIQUID-LIQUID EXTRACTION
                                     SOIL WASHING
                                     SOLVENT RECOVERY
                                     STRIPPING
                                     UV/PHOTOLYSIS
                                     INCINERATION
                                     ACTIVATED CARBON
                                     ACTIVATED SLUDGE
                                     ADSORPTION
                                     AEROBIC BIOLOGICAL
                                     ANAEROBIC BIOLOGICAL
                                     BIODEGRADATI ON-NOS
                                     BI ODEGRADATION-NOS
                                     BIODEGRADATION-SOLID PHASE
                                     CHEMICAL EXTRACTION
                                     CHEMICAL OXIDATION
                                     CHEMICAL PRECIPITATION
                                     CHEMICAL TREATMENT
                                     CHLORINATION
                                     CRYSTALLIZATION
                                     DEWATERING
                                     IN  SITU BI ODEGRADATION
                                     IN  SITU BIODEGRADATION
                                     IN  SITU SOIL  FLUSHING
                                     IN  SITU VACUUM & STEAM EXTRACT
                                     INCINERATION
                                     NEUTRALIZATION
                                                 208

-------
CONTAMINANT GROUP
                                TABLE # 4 (CONTINUED)

                                   COMPANY NAME
                                                                            TREATMENT TECHNOLOGY
HALOGENATED NONVOLATILES
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION/SPAR
                            PETROLEUM TESTING SERVICE,  INC.
                            PLASMA HOLDINGS,  N.V.
                            RADIAN CORPORATION
                            RADIAN CORPORATION
                            RADIAN CORPORATION
                            RADIAN CORPORATION
                            RADIAN CORPORATION
                            RADIAN CORPORATION
                            RADIAN CORPORATION
                            RADIAN CORPORATION
                            RADIAN CORPORATION
                            RADIAN CORPORATION
                            RADIAN CORPORATION
                            RADIAN CORPORATION
                            RADIAN CORPORATION
                            REMEDIATION TECHNOLOGIES
                            REMEDIATION TECHNOLOGIES
                            REMEDIATION TECHNOLOGIES
                            REMEDIATION TECHNOLOGIES
                            REMEDIATION TECHNOLOGIES
                            REMEDIATION TECHNOLOGIES
                            REMEDIATION TECHNOLOGIES
                            REMEDIATION TECHNOLOGIES
                            REMEDIATION TECHNOLOGIES
                            REMEDIATION TECHNOLOGIES
                            REMEDIATION TECHNOLOGIES
                            RIVER  OAK ASSOCIATES
                            RIVER  OAK ASSOCIATES
                            RIVER  OAK ASSOCIATES
                            RIVER  OAK ASSOCIATES
                            RIVER  OAK ASSOCIATES
                            RIVER  OAK ASSOCIATES
                            RIVER  OAK ASSOCIATES
                            RIVER  OAK ASSOCIATES
                            RIVER  OAK ASSOCIATES
                            RIVER  OAK ASSOCIATES
                            RIVER  OAK ASSOCIATES
                            RMC ENV & ANALYTICAL LABORATORIES
                            RMC ENV & ANALYTICAL LABORATORIES
                            RMC ENV & ANALYTICAL LABORATORIES
                            RMC ENV & ANALYTICAL LABORATORIES
                            RMC ENV & ANALYTICAL LABORATORIES
                            RMC ENV &  ANALYTICAL LABORATORIES
                            RMC ENV & ANALYTICAL LABORATORIES
                            RMT, INC.
                            RMT, INC.
                            RMT, INC.
 OIL-WATER SEPARATION
 SOIL WASHING
 STABILIZATION/SOLIDIFICATION
 STRIPPING
 THERMAL COMBUSTION
 SOLVENT RECOVERY
 IN SITU VACUUM & STEAM EXTRACT
 SSP-PLASMA SLUDGE
 ACTIVATED CARBON
 ACTIVATED SLUDGE
 ANAEROBIC BIOLOGICAL
 CHEMICAL EXTRACTION
 CHEMICAL OXIDATION
 CHEMICAL PRECIPITATION
 CHLORINATION
 ELECTRODIALYSIS
 ION EXCHANGE
 OZONATION
 REVERSE OSMOSIS
 STABILIZATION/SOLIDIFICATION
 STRIPPING
 ACTIVATED CARBON
 ANAEROBIC BIOLOGICAL
 BIODEGRADATION-SLURRY PHASE
 BIODEGRADATION-SOLID PHASE
 CHEMICAL EXTRACTION
 IN SITU BIOOEGRADATION
 IN SITU SOIL FLUSHING
 IN SITU VACUUM & STEAM EXTRACT
 SOIL WASHING
 STABILIZATION/SOLIDIFICATION
 STRIPPING
 ACTIVATED CARBON
 ADSORPTION
 AEROBIC BIOLOGICAL
 ANAEROBIC BIOLOGICAL
 CHEMICAL OXIDATION
 CHEMICAL PRECIPITATION
 CHEMICAL REDUCTION
 CRYSTALLIZATION
 OZONATION
 REVERSE  OSMOSIS
 STRIPPING
 CHEMICAL  EXTRACTION
 CHEMICAL  TREATMENT
 IN SITU  VACUUM & STEAM EXTRACT
 IN SITU  VITRIFICATION
 INCINERATION
 SOIL WASHING
 STABILIZATION/SOLIDIFICATION
ACTIVATED SLUDGE
ADSORPTION
AEROBIC BIOLOGICAL
                                                209

-------
CONTAMINANT GROUP
TABLE # 4 (CONTINUED)

   COMPANY NAME
                                                                            TREATMENT TECHNOLOGY
HALOGENATED NONVOLATILES
                            RMT, INC.
                            RMT, INC.
                            RMT, INC.
                            RMT, INC.
                            RMT, INC.
                            RMT, INC.
                            RMT, INC.
                            RMT, INC.
                            RMT, INC.
                            RMT, INC.
                            RMT, INC.
                            RNK ENVIRONMENTAL,  INC.
                            RNK ENVIRONMENTAL,  INC.
                            ROY F.  WESTON,  INC.
                            ROY F.  WESTON,  INC.
                            ROY F.  WESTON,  INC.
                            ROY F.  WESTON,  INC.
                            ROY F.  WESTON,  INC.
                            ROY F.  WESTON,  INC.
                            ROY F.  WESTON,  INC.
                            ROY F.  WESTON,  INC.
                            ROY F.  WESTON,  INC.
                            ROY F.  WESTON,  INC.
                            ROY F.  WESTON,  INC.
                            ROY F.  WESTON,  INC.
                            ROY F.  WESTON,  INC.
                            ROY F.  WESTON,  INC.
                            ROY F.  WESTON,  INC.
                            ROY F.  WESTON,  INC.
                            ROY F.  WESTON,  INC.
                            ROY F.  WESTON,  INC.
                            ROY F.  WESTON,  INC.
                            ROY F.  WESTON,  INC.
                            ROY F.  WESTON,  INC.
                            ROY F.  WESTON,  INC.
                            ROY F.  WESTON,  INC.
                            ROY F.  WESTON,  INC.
                            ROY F.  WESTON,  INC.
                            ROY F.  WESTON,  INC.
                            ROY F.  WESTON,  INC.
                            ROY F.  WESTON,  INC.
                            ROY F.  WESTON,  INC.
                            ROY F.  WESTON,  INC.
                            ROY F.  WESTON,  INC.
                            ROY F.  WESTON,  INC.
                            SYBRON  CHEMICALS, INC.
                            SYBRON  CHEMICALS, INC.
                            SYBRON  CHEMICALS, INC.
                            SYBRON  CHEMICALS, INC.
                            SYBRON  CHEMICALS, INC.
                            SYBRON  CHEMICALS, INC.
                            SYBRON  CHEMICALS, INC.
                            SYBRON  CHEMICALS, INC.
                                     ANAEROBIC BIOLOGICAL
                                     BIOOEGRADATION-NOS
                                     CHEMICAL EXTRACTION
                                     CHEMICAL OXIDATION
                                     EVAPORATION
                                     IN SITU SOIL FLUSHING
                                     INCINERATION
                                     OZONATION
                                     SOIL WASHING
                                     STABILIZATION/SOLIDIFICATION
                                     WET AIR OXIDATION
                                     BIODEGRADATION-COMPOST ING
                                     SOIL WASHING
                                     ACTIVATED CARBON
                                     ACTIVATED SLUDGE
                                     AEROBIC BIOLOGICAL
                                     ANAEROBIC BIOLOGICAL
                                     BIODEGRADATI ON-COMPOST ING
                                     BIODEGRADATI ON-SLURRY PHASE
                                     BIODEGRADATION-SOLID PHASE
                                     CENTRIFUGATION
                                     CHEMICAL EXTRACTION
                                     CHEMICAL OXIDATION
                                     CHEMICAL PRECIPITATION
                                     CHEMICAL REDUCTION
                                     CHEMICAL TREATMENT
                                     CHLORINATION
                                     COAGULAT ION/FLOCCULATION
                                     FILTRATION
                                     FILTRATION
                                     FLOTATION THICKENING
                                     GRAVITY THICKENING
                                     IN SITU BIODEGRADATION
                                     IN SITU RADIO FREQUENCY HTG
                                     IN SITU SOIL FLUSHING
                                     IN SITU VACUUM & STEAM EXTRACT
                                     INCINERATION
                                     ION EXCHANGE
                                     LOW TEMP THERMAL STRIPPING
                                     NEUTRALIZATION
                                     OZONATION
                                     SEDIMENTATION
                                     SOIL WASHING
                                     STABILIZATION/SOLIDIFICATION
                                     STRIPPING
                                     ACTIVATED SLUDGE
                                     ADSORPTION
                                     AEROBIC BIOLOGICAL
                                     BIODEGRADATION-SLURRY PHASE
                                     BIODEGRADATION-SOLID PHASE
                                     IN  SITU BIODEGRADATION
                                     IN  SITU SOIL  FLUSHING
                                     IN  SITU VACUUM & STEAM EXTRACT
                                                210

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                                TABLE # 4 (CONTINUED)
CONTAMINANT GROUP
                                   COMPANY NAME
                                                                            TREATMENT  TECHNOLOGY
HALOGENATED NONVOLATILES
HALOGENATED VOLATILES
SYBRON CHEMICALS, INC.
SYBRON CHEMICALS, INC.
THORNE ENVIRONMENTAL, INC.
THORNE ENVIRONMENTAL, INC.
THORNE ENVIRONMENTAL, INC.
THORNE ENVIRONMENTAL, INC.
TREATEK,  INC.
TREATEIC,  INC.
TREATEK,  INC.
TREATEK,  INC.
TREATEK,  INC.
VERSAR INC.
VERSAR INC.
VERSAR INC.
VERSAR INC.
VERSAR INC.
VERSAR INC.
VERSAR INC.
VERSAR INC.
VERSAR INC.
WASTE STREAM TECHNOLOGY,  INC.
WASTE STREAM TECHNOLOGY,  INC.
WASTE STREAM TECHNOLOGY,  INC.
WASTE STREAM TECHNOLOGY,  INC.
WASTE STREAM TECHNOLOGY,  INC.
WESTERN RESEARCH INSTITUTE
WESTERN RESEARCH INSTITUTE
ZENON ENVIRONMENTAL
ZENON ENVIRONMENTAL
ZENON ENVIRONMENTAL
ZENON ENVIRONMENTAL
ZENON ENVIRONMENTAL
ZENON ENVIRONMENTAL
ZIMPRO PASSAVANT
ZIMPRO PASSAVANT
ZIMPRO PASSAVANT
ZIMPRO PASSAVANT
ZIMPRO PASSAVANT
ZIMPRO PASSAVANT
ZIMPRO PASSAVANT
ZIMPRO PASSAVANT

AAA CSI
AAA CSI
AAA CSI
AAA CSI
AAA CSI
AAA CSI
AAA CSI
AAA CSI
AAA CSI
AAA CSI
AAA CSI
ION EXCHANGE
SOIL WASHING
BIODEGRADATION-SLURRY PHASE
BIODEGRADATION-SOLID PHASE
IN SITU SOIL FLUSHING
UV/DEEP TREATMENT
ADSORPTION
AEROBIC BIOLOGICAL
CHEMICAL PRECIPITATION
SOIL WASHING
STRIPPING
ADSORPTION
CHEMICAL EXTRACTION
INCINERATION
LIQUID-LIQUID EXTRACTION
PACT
STABILIZATION/SOLIDIFICATION
STRIPPING
VITRIFICATION
WET AIR OXIDATION
AEROBIC BIOLOGICAL
BIODEGRADATION-COMPOSTING
BIODEGRADATION-SLURRY PHASE
BIODEGRADATION-SOLID PHASE
IN SITU BIODEGRADATION
IN SITU BIODEGRADATION
IN SITU SOIL FLUSHING
ACTIVATED SLUDGE
BIODEGRADATION-NOS
CHEMICAL PRECIPITATION
CHEMICAL REDUCTION
REVERSE OSMOSIS
STABILIZATION/SOLIDIFICATION
ACTIVATED SLUDGE
ADSORPTION
AEROBIC BIOLOGICAL
AEROBIC PACT
ANAEROBIC BIOLOGICAL
ANAEROBIC PACT
ROTATING BIOLOGICAL CONTACTORS
WET AIR OXIDATION

ACTIVATED CARBON
ADSORPTION
CATALYSIS
CENTRIFUGATION
CHEMICAL EXTRACTION
CHEMICAL OXIDATION
CHEMICAL PRECIPITATION
CHEMICAL REDUCTION
CHEMICAL TREATMENT
CRYSTALLIZATION
FILTRATION
                                                 211

-------
CONTAMINANT GROUP
                                TABLE # 4 (CONTINUED)

                                   COMPANY NAME
       TREATMENT TECHNOLOGY
HALOGENATED VOLATILES
                            AAA CSI
                            AAA CSI
                            AAA CSI
                            AAA CSI
                            AAA CSI
                            AAA CSI
                            AAA CSI
                            AAA CSI
                            AAA CSI
                            AAA CSI
                            AAA CSI
                            AAA CSI
                            ANDCO ENVIRONMENTAL PROCESSES, INC.
                            APPLIED REMEDIATION TECHNOLOGY, INC
                            APPLIED SURFACE TECHNOLOGY
                            APPLIED SURFACE TECHNOLOGY
                            APPLIED SURFACE TECHNOLOGY
                            APPLIED SURFACE TECHNOLOGY
                            APPLIED SURFACE TECHNOLOGY
                            APPLIED SURFACE TECHNOLOGY
                            APPLIED SURFACE TECHNOLOGY
                            APPLIED SURFACE TECHNOLOGY
                            APPLIED SURFACE TECHNOLOGY
                            APPLIED SURFACE TECHNOLOGY
                            APPLIED SURFACE TECHNOLOGY
                            APPLIED SURFACE TECHNOLOGY
                            APPLIED SURFACE TECHNOLOGY
                            APPLIED SURFACE TECHNOLOGY
                            APPLIED SURFACE TECHNOLOGY
                            APPLIED SURFACE TECHNOLOGY
                            APPLIED SURFACE TECHNOLOGY
                            APPLIED SURFACE TECHNOLOGY
                            APPLIED SURFACE TECHNOLOGY
                            APPLIED SURFACE TECHNOLOGY
                            APPLIED SURFACE TECHNOLOGY
                            APPLIED SURFACE TECHNOLOGY
                            APPLIED SURFACE TECHNOLOGY
                            BIOSCIENCE MANAGEMENT,  INC.
                            BIOSCIENCE MANAGEMENT,  INC.
                            BIOSCIENCE MANAGEMENT,  INC.
                            BIOSCIENCE MANAGEMENT,  INC.
                            BIOSCIENCE MANAGEMENT,  INC.
                            BIOSCIENCE MANAGEMENT,  INC.
                            BIOSCIENCE MANAGEMENT,  INC.
                            BIOTROL,  INC.
                            BIOTROL,  INC.
                            BIOTROL,  INC.
                            C-E ENVIRONMENTAL,  INC.
                            C-E ENVIRONMENTAL,  INC.
                            C-E ENVIRONMENTAL,  INC.
                            C-E ENVIRONMENTAL,  INC.
                            C-E ENVIRONMENTAL,  INC.
                            C-E ENVIRONMENTAL,  INC.
IN SITU VACUUM & STEAM EXTRACT
INCINERATION
INCINERATION
LIQUID-LIQUID EXTRACTION
LOW TEMP THERMAL STRIPPING
NEUTRALIZATION
SOLVENT RECOVERY
STABILIZATION/SOLIDIFICATION
STRIPPING
THERMAL PROCESSING
WET AIR OXIDATION
WET AIR OXIDATION
STRIPPING
LOW ENERGY EXTRACTION PROCESS
ACTIVATED CARBON
ADSORPTION
CATALYSIS
CHEMICAL EXTRACTION
CHEMICAL OXIDATION
CHEMICAL PRECIPITATION
CHEMICAL TREATMENT
CHLORINATION
CRYSTALLIZATION
ELECTRODIALYSIS
ELECTROLYSIS
FLUID-BED STRIPPING
IN SITU SOIL FLUSHING
ION EXCHANGE
LOW TEMP THERMAL STRIPPING
OZONATION
REVERSE OSMOSIS
SOIL WASHING
SOLIDIFICATION
STABILIZATION
STRIPPING
THERMAL DECOMPOSITION
ULTRAFILTRATION
AEROBIC BIOLOGICAL
BIODEGRADATION-COMPOST ING
BIOOEGRAOATION-SLURRY  PHASE
BIODEGRADATION-SOLID PHASE
IN SITU BIODEGRADATION
NEUTRALIZATION
STRIPPING
BIODEGRADATION-AQUEOUS  PHASE
BIODEGRADATION-SLURRY  PHASE
SOIL WASHING
ACTIVATED CARBON
ADSORPTION
ADSORPTION
AEROBIC BIOLOGICAL
BIODEGRADATION-NOS
IN SITU BIODEGRADATION
                                                  212

-------
CONTAMINANT GROUP
                                TABLE # 4 (CONTINUED)

                                   COMPANY NAME
       TREATMENT TECHNOLOGY
HALOGENATED VOLATILES
                            C-E ENVIRONMENTAL,  INC.
                            C-E ENVIRONMENTAL,  INC.
                            C-E ENVIRONMENTAL,  INC.
                            C-E ENVIRONMENTAL,  INC.
                            C-EE BIOREMEDIATION SYSTEMS
                            C-EE BIOREMEDIATION SYSTEMS
                            C-EE BIOREMEDIATION SYSTEMS
                            C-EE BIOREMEDIATION SYSTEMS
                            C-EE BIOREMEDIATION SYSTEMS
                            C-EE BIOREMEDIATION SYSTEMS
                            C-EE BIOREMEDIATION SYSTEMS
                            C-EE BIOREMEDIATION SYSTEMS
                            C-EE BIOREMEDIATION SYSTEMS
                            C-EE BIOREMEDIATION SYSTEMS
                            C-EE BIOREMEDIATION SYSTEMS
                            C-EE BIOREMEDIATION SYSTEMS
                            C-EE BIOREMEDIATION SYSTEMS
                            C-EE BIOREMEDIATION SYSTEMS
                            C-EE BIOREMEDIATION SYSTEMS
                            C-EE BIOREMEDIATION SYSTEMS
                            CAMBRIDGE SCIENTIFIC,  INC.
                            DETOX, INC.
                            DETOX, INC.
                            DETOX, INC.
                            DETOX, INC.
                            DETOX, INC.
                            DETOX, INC.
                            DETOX, INC.
                            DETOX, INC.
                            DETOX, INC.
                            DETOX, INC.
                            DETOX, INC.
                            DETOX, INC.
                            DETOX, INC.
                            DETOX, INC.
                            DETOX, INC.
                            DETOX, INC.
                            DETOX, INC.
                            DETOX, INC.
                            DETOX, INC.
                            DETOX, INC.
                            DETOX, INC.
                            DIVERSIFIED ENGINEERING,  INC.
                            DIVERSIFIED ENGINEERING,  INC.
                            DIVERSIFIED ENGINEERING,  INC.
                            DIVERSIFIED ENGINEERING,  INC.
                            DIVERSIFIED ENGINEERING,  INC.
                            DIVERSIFIED ENGINEERING,  INC.
                            DIVERSIFIED ENGINEERING,  INC.
                            E M  &  C ENGINEERING ASSOCIATES
                            E M  &  C ENGINEERING ASSOCIATES
                            E M  &  C ENGINEERING ASSOCIATES
                            E M  &  C ENGINEERING ASSOCIATES
 ION EXCHANGE
 LOW TEMP  THERMAL  EXTRACTION
 STRIPPING
 UV/OXIDATION
 ACTIVATED CARBON
 ACTIVATED SLUDGE
 ADSORPTION
 AEROBIC BIOLOGICAL
 ANAEROBIC BIOLOGICAL
 BIODEGRADATION-SOLID  PHASE
 CHEMICAL  EXTRACTION
 IN SITU BIODEGRADATION
 IN SITU SOIL  FLUSHING
 IN SITU VACUUM &  STEAM  EXTRACT
 LIQUID-LIQUID EXTRACTION
 LOW TEMP  THERMAL  STRIPPING
 NEUTRALIZATION
 NEUTRALIZATION
 SOIL WASHING
 STRIPPING
 ANAEROBIC BIOLOGICAL
 ACTIVATED CARBON
 ACTIVATED SLUDGE
 ADSORPTION
 ANAEROBIC BIOLOGICAL
 BIOOEGRADATION-COMPOSTING
 BIODEGRADATION-SLURRY PHASE
 BIODEGRADATION-SOLID  PHASE
 CHEMICAL  EXTRACTION
 CHEMICAL  OXIDATION
 CHEMICAL  PRECIPITATION
 CHEMICAL  REDUCTION
 CHEMICAL  TREATMENT
 CHLORINATION
 IN SITU BIODEGRADATION
 IN SITU SOIL FLUSHING
 IN SITU VACUUM &  STEAM  EXTRACT
 IN SITU VITRIFICATION
 OZONATION
 SOIL WASHING
 SOLVENT RECOVERY
 STRIPPING
ACTIVATED  CARBON  ADSORPTION
DISTILLATION
 EVAPORATION
 GRAVITY (OIL/WATER)
 INCINERATION
RESIN ADSORPTION
SOLVENT RECOVERY
ACTIVATED CARBON
ADSORPTION
AEROBIC BIOLOGICAL
ANAEROBIC BIOLOGICAL
                                                213

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CONTAMINANT GROUP
                                TABLE # 4 (CONTINUED)

                                   COMPANY NAME
                                                                            TREATMENT  TECHNOLOGY
HALOGENATED VOLATILES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M a C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            EARTH TECHNOLOGY CORP.
                            EARTH TECHNOLOGY CORP.
                            EARTH TECHNOLOGY CORP.
                            ENERGY&ENVIRONMENTAL RESEARCH CORP.
                            ENRECO TECHNOLOGIES GROUP
                            ENRECO TECHNOLOGIES GROUP
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENVIRONMENTAL REMEDIATION, INC.
                            ENVIRONMENTAL REMEDIATION, INC.
                            ENVIRONMENTAL REMEDIATION, INC.
BIODEGRADATION-NOS
CATALYSIS
CHEMICAL EXTRACTION
CHEMICAL OXIDATION
CHEMICAL PRECIPITATION
CHEMICAL REDUCTION
CHEMICAL TREATMENT
CHLORINATION
CRYSTALLIZATION
IN SITU SOIL FLUSHING
INCINERATION
ION EXCHANGE
LIQUID-LIQUID EXTRACTION
LOW TEMP THERMAL STRIPPING
NEUTRALIZATION
OZONATION
REVERSE OSMOSIS
SOLVENT RECOVERY
STABILIZATION
STRIPPING
VITRIFICATION
SOIL WASHING
STABILIZATION/SOLIDIFICATION
STRIPPING
INCINERATION
CHEMICAL EXTRACTION
STABILIZATION/SOLIDIFICATION
ACTIVATED SLUDGE
ADSORPTION
BIODEGRADATION-NOS
BIODEGRADATION-NOS
CHEMICAL EXTRACTION
CHEMICAL OXIDATION
CHEMICAL PRECIPITATION
CHEMICAL REDUCTION
CHEMICAL TREATMENT
CHLORINATION
FILTRATION
IN SITU BIODEGRADATION
IN SITU SOIL FLUSHING
IN SITU VACUUM & STEAM EXTRACT
INCINERATION
ION EXCHANGE
LOW TEMP THERMAL STRIPPING
NEUTRALIZATION
SOIL WASHING
STABILIZATION/SOLIDIFICATION
STABILIZATION/SOLIDIFICATION
STRIPPING
VITRIFICATION
ACTIVATED SLUDGE
AEROBIC BIOLOGICAL
BIODEGRADATION-COMPOSTING
                                                 214

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CONTAMINANT GROUP
                                TABLE # 4 (CONTINUED)

                                   COMPANY NAME
       TREATMENT TECHNOLOGY
HALOGENATED VOLATILES
                            ENVIRONMENTAL REMEDIATION,  INC.
                            ENVIRONMENTAL REMEDIATION,  INC.
                            ENVIRONMENTAL REMEDIATION,  INC.
                            ENVIRONMENTAL REMEDIATION,  INC.
                            ENVIRONMENTAL REMEDIATION,  INC.
                            ENVIRONMENTAL RESOURCE ASSOCIATES
                            ENVIRONMENTAL RESOURCE ASSOCIATES
                            ENVIRONMENTAL RESOURCE ASSOCIATES
                            ENVIRONMENTAL RESOURCE ASSOCIATES
                            ENVIRONMENTAL RESOURCE ASSOCIATES
                            ENVIRONMENTAL RESOURCE ASSOCIATES
                            ENVIRONMENTAL RESOURCE ASSOCIATES
                            ENVIRONMENTAL RESOURCE ASSOCIATES
                            ENVIRONMENTAL RESOURCE ASSOCIATES
                            ENVIRONMENTAL TECHNOLOGY SOUTHEAST
                            ENVIRONMENTAL TECHNOLOGY SOUTHEAST
                            ENVIRONMENTAL TECHNOLOGY SOUTHEAST
                            ENVIRONMENTAL TECHNOLOGY SOUTHEAST
                            ENVIRONMENTAL TECHNOLOGY SOUTHEAST
                            ENVIRONMENTAL TECHNOLOGY SOUTHEAST
                            ENVIRONMENTAL TECHNOLOGY SOUTHEAST
                            ENVIRONMENTAL TECHNOLOGY SOUTHEAST
                            ENVIRONMENTAL TECHNOLOGY SOUTHEAST
                            ENVIRONMENTAL TECHNOLOGY SOUTHEAST
                            ENVIRONMENTAL TECHNOLOGY SOUTHEAST
                            ENVIRONMENTAL TECHNOLOGY SOUTHEAST
                            ENVIRONMENTAL TECHNOLOGY SOUTHEAST
                            ENVIRONMENTAL TECHNOLOGY SOUTHEAST
                            ENVIRONMENTAL TECHNOLOGY SOUTHEAST
                            ENVIRONMENTAL TECHNOLOGY SOUTHEAST
                            ENVIRONMENTAL TECHNOLOGY SOUTHEAST
                            ENVIRONMENTAL TECHNOLOGY SOUTHEAST
                            ENVIROSAFE TECHNOLOGIES, INC.
                            ENVIROTECH MID-ATLANTIC
                            ENVIROTECH MID-ATLANTIC
                            ENVIROTECH MID-ATLANTIC
                            ENVIROTECH MID-ATLANTIC
                            ENVIROTECH MID-ATLANTIC
                            ENVIROTECH MID-ATLANTIC
                            ENVIROTECH MID-ATLANTIC
                            ENVIROTECH MID-ATLANTIC
                            ENVIROTECH MID-ATLANTIC
                            ENVIROTECH MID-ATLANTIC
                            ENVIROTECH MID-ATLANTIC
                            ENVIROTECH MID-ATLANTIC
                            ENVIROTECH MID-ATLANTIC
                            FREEZE TECHNOLOGIES CORPORATION
                            GENERAL PHYSICS CORPORATION
                            GENERAL PHYSICS CORPORATION
                            GENERAL PHYSICS CORPORATION
                            GENERAL PHYSICS CORPORATION
                            GENERAL PHYSICS CORPORATION
                            GENERAL PHYSICS CORPORATION
BIOOEGRADATION-SLURRY PHASE
BIODEGRADATION-SOLID PHASE
CHEMICAL TREATMENT
IN SITU BIODEGRADATION
SOIL WASHING
ACTIVATED CARBON
ACTIVATED SLUDGE
AEROBIC BIOLOGICAL
CHEMICAL OXIDATION
CHEMICAL PRECIPITATION
CHEMICAL REDUCTION
ION EXCHANGE
NEUTRALIZATION
STRIPPING
ACTIVATED CARBON
ACTIVATED SLUDGE
AEROBIC BIOLOGICAL
BIODEGRADATION-COMPOST ING
BIODEGRADATION-SLURRY PHASE
BIODEGRADATION-SOLID PHASE
CHEMICAL OXIDATION
CHEMICAL PRECIPITATION
CHEMICAL REDUCTION
CHLORINATION
IN SITU BIODEGRADATION
IN SITU SOIL FLUSHING
IN SITU VACUUM & STEAM EXTRACT
INCINERATION
ION EXCHANGE
NEUTRALIZATION
SOIL WASHING
STRIPPING
IN SITU VACUUM EXTRACTION
ACTIVATED SLUDGE
ADSORPTION
AEROBIC BIOLOGICAL
ANAEROBIC BIOLOGICAL
BIODEGRADATION-SLURRY PHASE
BIODEGRADATION-SOLID PHASE
CHEMICAL EXTRACTION
CHEMICAL TREATMENT
IN SITU BIODEGRADATION
IN SITU SOIL FLUSHING
IN SITU VACUUM & STEAM EXTRACT
ION EXCHANGE
SOIL WASHING
FREEZE CRYSTALLIZATION
ACTIVATED CARBON
ACTIVATED SLUDGE
ADSORPTION
AEROBIC BIOLOGICAL
ANAEROBIC BIOLOGICAL
CHEMICAL OXIDATION
                                                 215

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CONTAMINANT GROUP
                                TABLE # 4 (CONTINUED)

                                   COMPANY NAME
                 TREATMENT  TECHNOLOGY
HALOGENATED VOLATILES
                            GENERAL PHYSICS CORPORATION
                            GENERAL PHYSICS CORPORATION
                            GENERAL PHYSICS CORPORATION
                            GENERAL PHYSICS CORPORATION
                            HUNTER BIOSCIENCES, INC.
                            HUNTER BIOSCIENCES, INC.
                            HUNTER BIOSCIENCES, INC.
                            HUNTER BIOSCIENCES, INC.
                            HUNTER BIOSCIENCES, INC.
                            HUNTER BIOSCIENCES. INC.
                            HUNTER BIOSCIENCES, INC.
                            HUNTER SERVICES, INC.
                            HUNTER SERVICES, INC.
                            HUNTER SERVICES, INC.
                            HUNTER SERVICES, INC.
                            HUNTER SERVICES, INC.
                            HUNTER SERVICES, INC.
                            HUNTER SERVICES, INC.
                            HUNTER SERVICES, INC.
                            HUNTER SERVICES, INC.
                            HUNTER SERVICES, INC.
                            HUNTER SERVICES, INC.
                            HUNTER SERVICES, INC.
                            HUNTER SERVICES, INC.
                            HUNTER SERVICES, INC.
                            IIT RESEARCH INST
                            I IT RESEARCH INST
                            I IT RESEARCH INST
                            I IT RESEARCH INST
                            I IT RESEARCH INST
                            I IT RESEARCH INST
                            INTERNATIONAL PROCESS RESEARCH
                            INTERNATIONAL PROCESS RESEARCH
                            INTERNATIONAL PROCESS RESEARCH
                            INTERNATIONAL PROCESS RESEARCH
                            INTERNATIONAL PROCESS RESEARCH
                            INTERNATIONAL PROCESS RESEARCH
                            INTERNATIONAL PROCESS RESEARCH
                            INTERNATIONAL PROCESS RESEARCH
                            INTERNATIONAL PROCESS RESEARCH
                            INTERNATIONAL PROCESS RESEARCH
                            INTERNATIONAL PROCESS RESEARCH
                            INTERNATIONAL PROCESS RESEARCH
                            INTERNATIONAL PROCESS RESEARCH
                            INTERNATIONAL PROCESS RESEARCH
                            INTERNATIONAL PROCESS RESEARCH
                            INTERNATIONAL PROCESS RESEARCH
                            INTERNATIONAL PROCESS RESEARCH
                            INTERNATIONAL PROCESS RESEARCH
                            INTERNATIONAL PROCESS RESEARCH
                            INTERNATIONAL PROCESS RESEARCH
                            INTERNATIONAL PROCESS RESEARCH
                            INTERNATIONAL PROCESS RESEARCH
CORP
CORP
CORP
CORP
CORP
CORP
CORP
CORP
CORP
CORP
CORP
CORP
CORP
CORP
CORP
CORP
CORP
CORP
CORP
CORP
CORP
CORP
CHEMICAL REDUCTION
LIQUID-LIQUID EXTRACTION
OZONATION
STRIPPING
ACTIVATED CARBON
ACTIVATED SLUDGE
AEROBIC BIOLOGICAL
IN SITU BIODEGRADATION
IN SITU SOIL FLUSHING
IN SITU VACUUM & STEAM EXTRACT
STRIPPING
ACTIVATED SLUDGE
ADSORPTION
ADSORPTION
CHEMICAL OXIDATION
CHEMICAL OXIDATION
CHEMICAL PRECIPITATION
CHEMICAL PRECIPITATION
COAGULAT ION/FLOCCULATI ON
COAGULATION/FLOCCULATION
LOW TEMP THERMAL STRIPPING
NEUTRALIZATION
OZONATION
STABILIZATION/SOLIDIFICATION
STRIPPING
CHEMICAL EXTRACTION
CHEMICAL TREATMENT
IN SITU RADIO FREQUENCY HTG
LOW TEMP THERMAL STRIPPING
OZONATION
UV/OZONATION
ACTIVATED CARBON
ADSORPTION
AEROBIC BIOLOGICAL
ANAEROBIC BIOLOGICAL
BIODEGRADATION-NOS
CHEMICAL EXTRACTION
CHEMICAL OXIDATION
CHEMICAL PRECIPITATION
CHEMICAL REDUCTION
CHEMICAL TREATMENT
CHLORINATION
CRYSTALLIZATION
IN SITU BIODEGRADATION
INCINERATION
LIQUID-LIQUID EXTRACTION
NEUTRALIZATION
OZONATION
SOIL WASHING
SOLVENT RECOVERY
STABILIZATION/SOLIDIFICATION
STRIPPING
WET AIR OXIDATION
                                                 216

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CONTAMINANT GROUP
                                TABLE # 4 (CONTINUED)

                                   COMPANY NAME
       TREATMENT TECHNOLOGY
HALOGENATED VOLATILES
                            IT CORPORATION
                            IT CORPORATION
                            IT CORPORATION
                            IT CORPORATION
                            IT CORPORATION
                            IT CORPORATION
                            IT CORPORATION
                            IT CORPORATION
                            JACOBS ENGINEERING GROUP, INC.
                            JACOBS ENGINEERING GROUP, INC.
                            JACOBS ENGINEERING GROUP, INC.
                            JACOBS ENGINEERING GROUP, INC.
                            KEYSTONE ENVIRONMENTAL RESOURCES
                            KEYSTONE ENVIRONMENTAL RESOURCES
                            KEYSTONE ENVIRONMENTAL RESOURCES
                            KEYSTONE ENVIRONMENTAL RESOURCES
                            KEYSTONE ENVIRONMENTAL RESOURCES
                            KEYSTONE ENVIRONMENTAL RESOURCES
                            KIBER ASSOCIATES, INC.
                            KIBER ASSOCIATES, INC.
                            KIBER ASSOCIATES, INC.
                            KIBER ASSOCIATES, INC.
                            KIBER ASSOCIATES, INC.
                            KSE, INC.
                            KSE, INC.
                            KSE, INC.
                            KSE, INC.
                            KSE, INC.
                            KSE, INC.
                            KSE, INC.
                            KSE, INC.
                            KSE, INC.
                            MAECORP, INC.
                            MAECORP, INC.
                            MAECORP, INC.
                            MAECORP, INC.
                            MAECORP, INC.
                            MAECORP, INC.
                            MAECORP, INC.
                            MAECORP, INC.
                            MCNAMEE ADVANCED TECHNOLOGY, INC.
                            MCNAMEE ADVANCED TECHNOLOGY, INC.
                            MCNAMEE ADVANCED TECHNOLOGY, INC.
                            MCNAMEE ADVANCED TECHNOLOGY, INC.
                            MCNAMEE ADVANCED TECHNOLOGY, INC.
                            MCNAMEE ADVANCED TECHNOLOGY, INC.
                            MCNAMEE ADVANCED TECHNOLOGY, INC.
                            MCNAMEE ADVANCED TECHNOLOGY, INC.
                            MCNAMEE ADVANCED TECHNOLOGY, INC.
                            MCNAMEE ADVANCED TECHNOLOGY, INC.
                            MCNAMEE ADVANCED TECHNOLOGY, INC.
                            MCNAMEE ADVANCED TECHNOLOGY, INC.
                            MCNAMEE ADVANCED TECHNOLOGY, INC.
ACTIVATED CARBON
CATALYSIS
CHEMICAL OXIDATION
CHEMICAL REDUCTION
LOW TEMP THERMAL STRIPPING
SOLVENT RECOVERY
STABILIZATION/SOLIDIFICATION
STRIPPING
ACTIVATED SLUDGE
AEROBIC BIOLOGICAL
CHEMICAL OXIDATION
LIQUID-LIQUID EXTRACTION
ACTIVATED CARBON
ACTIVATED SLUDGE
AEROBIC BIOLOGICAL
IN SITU BIOOEGRADATION
OZONATION
STRIPPING
ACTIVATED CARBON
CHEMICAL PRECIPITATION
STABILIZATION/SOLIDIFICATION
STABILIZATION/SOLIDIFICATION
STABILIZATION/SOLIDIFICATION
ACTIVATED CARBON
ADSORPTION
CATALYSIS
CHEMICAL EXTRACTION
LOW TEMP THERMAL STRIPPING
REVERSE OSMOSIS
SOLVENT RECOVERY
STRIPPING
ULTRAFILTRATION
ADSORPTION/ABSORPTION
CHEMICAL EXTRACTION
IN SITU VACUUM & STEAM EXTRACT
ION EXCHANGE
LOW TEMP THERMAL STRIPPING
REVERSE OSMOSIS
STRIPPING
UV/PEROXIDATION
ACTIVATED CARBON
ACTIVATED SLUDGE
ADSORPTION
AEROBIC BIOLOGICAL
ANAEROBIC BIOLOGICAL
BIODEGRADATION-COMPOSTING
BIODEGRADATION-SLURRY PHASE
BIODEGRADATION-SOLID PHASE
CHEMICAL TREATMENT
CHLORINATION
INCINERATION
PACT
SOLVENT RECOVERY
                                                 217

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CONTAMINANT GROUP
TABLE # 4 (CONTINUED)

   COMPANY NAME
                                                                            TREATMENT TECHNOLOGY
HALOGENATED VOLAT1LES
                            MCNAMEE ADVANCED TECHNOLOGY, INC.
                            MCNAMEE ADVANCED TECHNOLOGY, INC.
                            MCNAMEE ADVANCED TECHNOLOGY, INC.
                            MCNAMEE ADVANCED TECHNOLOGY, INC.
                            MCNAMEE ADVANCED TECHNOLOGY, INC.
                            MEMBRANE TECHNOLOGY & RESEARCH, INC
                            MEMBRANE TECHNOLOGY & RESEARCH, INC
                            MIDWEST RESEARCH INSTITUTE
                            MIDWEST RESEARCH INSTITUTE
                            MIDWEST RESEARCH INSTITUTE
                            MIDWEST RESEARCH INSTITUTE
                            O'BRIEN AND GERE ENGINEERS, INC.
                            O'BRIEN AND GERE ENGINEERS, INC.
                            O'BRIEN AND GERE ENGINEERS, INC.
                            O'BRIEN AND GERE ENGINEERS, INC.
                            O'BRIEN AND GERE ENGINEERS, INC.
                            O'BRIEN AND GERE ENGINEERS, INC.
                            O'BRIEN AND GERE ENGINEERS, INC.
                            O'BRIEN AND GERE ENGINEERS, INC.
                            O'BRIEN AND GERE ENGINEERS, INC.
                            O'BRIEN AND GERE ENGINEERS, INC.
                            O'BRIEN AND GERE ENGINEERS, INC.
                            OGDEN ENVIRONMENTAL SERVICES, INC.
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION/SPAR
                            PEI ASSOCIATES, INC.
                            PEI ASSOCIATES, INC.
                            PEI ASSOCIATES, INC.
                            PEI ASSOCIATES, INC.
                            PEI ASSOCIATES, INC.
                            PETROLEUM TESTING SERVICE, INC.
                                     STRIPPING
                                     THERMAL COMBUSTION
                                     UV/OXIDATION
                                     WET AIR OXIDATION
                                     WET AIR OXIDATION
                                     PERVAPORATION
                                     VAPOR SEPARATION
                                     ACTIVATED CARBON
                                     BIODEGRADATION-NOS
                                     COMBUSTOR EQUIPPED W/MASS SPEC
                                     INCINERATION
                                     ACTIVATED CARBON
                                     ACTIVATED SLUDGE
                                     ADSORPTION
                                     AEROBIC BIOLOGICAL
                                     IN SITU BIODEGRADATION
                                     IN SITU SOIL FLUSHING
                                     IN SITU VACUUM & STEAM EXTRACT
                                     SOIL WASHING
                                     SOLVENT RECOVERY
                                     STRIPPING
                                     UV/PHOTOLYSIS
                                     INCINERATION
                                     ACTIVATED CARBON
                                     ACTIVATED SLUDGE
                                     ADSORPTION
                                     AEROBIC BIOLOGICAL
                                     ANAEROBIC BIOLOGICAL
                                     BIODEGRADATION-NOS
                                     BIODEGRADATION-NOS
                                     BIODEGRADATION-SOLID PHASE
                                     CHEMICAL OXIDATION
                                     CHEMICAL TREATMENT
                                     CHLOR1NAT10N
                                     CRYSTALLIZATION
                                     DEWATERING
                                     IN SITU BIODEGRADATION
                                     IN SITU BIODEGRADATION
                                     IN SITU SOIL FLUSHING
                                     IN SITU VACUUM & STEAM EXTRACT
                                     INCINERATION
                                     LOW TEMP THERMAL STRIPPING
                                     OIL-WATER SEPARATION
                                     STABILIZATION/SOLIDIFICATION
                                     STRIPPING
                                     THERMAL COMBUSTION
                                     SOLVENT RECOVERY
                                     AEROBIC BIOLOGICAL
                                     FIXATION
                                     LOW TEMP THERMAL DESORPTION
                                     STABILIZATION/SOLIDIFICATION
                                     STABILIZATION/SOLIDIFICATION
                                     IN SITU VACUUM & STEAM EXTRACT
                                                 218

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CONTAMINANT GROUP
                                TABLE # 4 (CONTINUED)

                                   COMPANY NAME
       TREATMENT TECHNOLOGY
HALOGENATED VOLATILES
                            PLASMA HOLDINGS, N.V.
                            PROCEDYNE CORPORATION
                            QUALTEC, INC.
                            QUALTEC, INC.
                            QUALTEC. INC.
                            RADIAN CORPORATION
                            RADIAN CORPORATION
                            RADIAN CORPORATION
                            RADIAN CORPORATION
                            RADIAN CORPORATION
                            RADIAN CORPORATION
                            RADIAN CORPORATION
                            RADIAN CORPORATION
                            RADIAN CORPORATION
                            RADIAN CORPORATION
                            RADIAN CORPORATION
                            RADIAN CORPORATION
                            RADIAN CORPORATION
                            RADIAN CORPORATION
                            REMEDIATION  TECHNOLOGIES
                            REMEDIATION  TECHNOLOGIES
                            REMEDIATION  TECHNOLOGIES
                            REMEDIATION  TECHNOLOGIES
                            REMEDIATION  TECHNOLOGIES
                            REMEDIATION  TECHNOLOGIES
                            REMEDIATION  TECHNOLOGIES
                            REMEDIATION  TECHNOLOGIES
                            REMEDIATION  TECHNOLOGIES
                            REMEDIATION  TECHNOLOGIES
                            RIVER OAK ASSOCIATES
                            RIVER OAK ASSOCIATES
                            RIVER OAK ASSOCIATES
                            RIVER OAK ASSOCIATES
                            RIVER OAK ASSOCIATES
                            RIVER OAK ASSOCIATES
                            RIVER OAK ASSOCIATES
                            RIVER OAK ASSOCIATES
                            RIVER OAK ASSOCIATES
                            RIVER OAK ASSOCIATES
                            RIVER OAK ASSOCIATES
                            RMC ENV  & ANALYTICAL LABORATORIES
                            RMC ENV  & ANALYTICAL LABORATORIES
                            RMC ENV  & ANALYTICAL LABORATORIES
                            RMC ENV  & ANALYTICAL LABORATORIES
                            RMC ENV  & ANALYTICAL LABORATORIES
                            RMC ENV  & ANALYTICAL LABORATORIbS
                            RMC ENV  & ANALYTICAL LABORATORIES
                            RMT,  INC.
                            RMT,  INC.
                            RMT,  INC.
                            RMT,  INC.
                            RMT,  INC.
                            RMT,  INC.
SSP-PLASMA SLUDGE
PYROLYSIS
CHEMICAL PRECIPITATION
ION EXCHANGE
STABILIZATION/SOLIDIFICATION
ACTIVATED CARBON
ACTIVATED SLUDGE
ANAEROBIC BIOLOGICAL
CHEMICAL EXTRACTION
CHEMICAL OXIDATION
CHEMICAL PRECIPITATION
CHLORINATION
ELECTROOIALYSIS
INCINERATION
ION EXCHANGE
OZONATION
REVERSE OSMOSIS
STABILIZATION/SOLIDIFICATION
STRIPPING
ACTIVATED CARBON
ANAEROBIC BIOLOGICAL
BIODEGRADATION-SLURRY PHASE
BIODEGRADATION-SOLID PHASE
CHEMICAL EXTRACTION
IN SITU BIODEGRADATION
IN SITU SOIL  FLUSHING
IN SITU VACUUM & STEAM  EXTRACT
SOIL WASHING
STRIPPING
ACTIVATED CARBON
ADSORPTION
AEROBIC BIOLOGICAL
ANAEROBIC BIOLOGICAL
CHEMICAL OXIDATION
CHEMICAL PRECIPITATION
CHEMICAL REDUCTION
CRYSTALLIZATION
OZONATION
REVERSE OSMOSIS
STRIPPING
CHEMICAL EXTRACTION
CHEMICAL TREATMENT
IN SITU VACUUM & STEAM  EXTRACT
IN SITU VITRIFICATION
INCINERATION
SOIL WASHING
STABILIZATION/SOLIDIFICATION
ACTIVATED CARBON
ACTIVATED SLUDGE
AEROBIC BIOLOGICAL
ANAEROBIC BIOLOGICAL
BIODEGRADATION-NOS
CHEMICAL EXTRACTION
                                                 219

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CONTAMINANT GROUP
TABLE # 4 (CONTINUED)

   COMPANY NAME
                                                                            TREATMENT TECHNOLOGY
HALOGENATED VOLATILES
                            RMT, INC.
                            RMT, INC.
                            RMT, INC.
                            RMT, INC.
                            RMT, INC.
                            RMT, INC.
                            RMT, INC.
                            RMT, INC.
                            RMT, INC.
                            RMT, INC.
                            RMT, INC.
                            RMT, INC.
                            RMT, INC.
                            RNK ENVIRONMENTAL, INC.
                            RNK ENVIRONMENTAL, INC.
                            ROY F. UESTON, INC.
                            ROY F. UESTON, INC.
                            ROY F. WESTON, INC.
                            ROY F. UESTON, INC.
                            ROY F. UESTON, INC.
                            ROY F. UESTON, INC.
                            ROY F. UESTON, INC.
                            ROY F. UESTON, INC.
                            ROY F. UESTON, INC.
                            ROY F. UESTON, INC.
                            ROY F. UESTON, INC.
                            ROY F. UESTON, INC.
                            ROY F. UESTON, INC.
                            ROY F. UESTON, INC.
                            ROY F. UESTON, INC.
                            ROY F. UESTON, INC.
                            ROY F. UESTON, INC.
                            ROY F. UESTON, INC.
                            ROY F. UESTON, INC.
                            ROY F. UESTON, INC.
                            ROY F. UESTON, INC.
                            ROY F. UESTON, INC.
                            ROY F. UESTON, INC.
                            ROY F. UESTON, INC.
                            ROY F. UESTON, INC.
                            ROY F. UESTON, INC.
                            ROY F. UESTON, INC.
                            ROY F. UESTON, INC.
                            ROY F. UESTON, INC.
                            ROY F. UESTON, INC.
                            ROY F. UESTON, INC.
                            ROY F. UESTON, INC.
                            ROY F. UESTON, INC.
                            ROY F. UESTON, INC.
                            S-CUBED
                            SOUTHERN RESEARCH INSTITUTE
                            SYBRON CHEMICALS, INC.
                            SYBRON CHEMICALS, INC.
                                     CHEMICAL OXIDATION
                                     CHEMICAL TREATMENT
                                     DISTILLATION
                                     IN SITU SOIL FLUSHING
                                     IN SITU VACUUM & STEAM EXTRACT
                                     INCINERATION
                                     LIQUID-LIQUID EXTRACTION
                                     LOU TEMP THERMAL STRIPPING
                                     OZONATION
                                     SOIL UASHING
                                     STABILIZATION/SOLIDIFICATION
                                     STRIPPING
                                     WET AIR OXIDATION
                                     BIODEGRADATION-COMPOSTING
                                     SOIL UASHING
                                     ACTIVATED CARBON
                                     ACTIVATED SLUDGE
                                     AEROBIC BIOLOGICAL
                                     ANAEROBIC BIOLOGICAL
                                     BIODEGRADATION-COMPOSTING
                                     BIODEGRADATION-SLURRY PHASE
                                     BIODEGRADATION-SOLID PHASE
                                     CENTRIFUGATION
                                     CHEMICAL EXTRACTION
                                     CHEMICAL OXIDATION
                                     CHEMICAL PRECIPITATION
                                     CHEMICAL REDUCTION
                                     CHEMICAL TREATMENT
                                     CHLORINATION
                                     COAGULATION/FLOCCULATION
                                     FILTRATION
                                     FILTRATION
                                     FLOTATION THICKENING
                                     GRAVITY THICKENING
                                     IN SITU BIODEGRADATION
                                     IN SITU RADIO FREQUENCY HTG
                                     IN SITU SOIL FLUSHING
                                     IN SITU VACUUM & STEAM EXTRACT
                                     INCINERATION
                                     ION EXCHANGE
                                     LOU TEMP THERMAL STRIPPING
                                     NEUTRALIZATION
                                     OZONATION
                                     PHYSICAL TREATMENT-NOS
                                     SEDIMENTATION
                                     SOIL WASHING
                                     STABILIZATION/SOLIDIFICATION
                                     STRIPPING
                                     THERMAL TREATMENT-NOS
                                     LIQUID-LIQUID EXTRACTION
                                     IN SITU BIODEGRADATION
                                     ACTIVATED SLUDGE
                                     ADSORPTION
                                                 220

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CONTAMINANT GROUP
                                TABLE # A (CONTINUED)

                                   COMPANY NAME
       TREATMENT TECHNOLOGY
HALOGENATED VOLATILES
                            SYBRON CHEMICALS, INC.
                            SYBRON CHEMICALS, INC.
                            SYBRON CHEMICALS, INC.
                            SYBRON CHEMICALS, INC.
                            SYBRON CHEMICALS, INC.
                            SYBRON CHEMICALS, INC.
                            SYBRON CHEMICALS, INC.
                            SYBRON CHEMICALS, INC.
                            THORNE ENVIRONMENTAL, INC.
                            THORNE ENVIRONMENTAL, INC.
                            THORNE ENVIRONMENTAL, INC.
                            THORNE ENVIRONMENTAL, INC.
                            THORNE ENVIRONMENTAL, INC.
                            THORNE ENVIRONMENTAL. INC.
                            TREATEK, INC.
                            TREATEK, INC.
                            TREATEK, INC.
                            TREATEK, INC.
                            TREATEK, INC.
                            TREATEK, INC.
                            ULTROX INTERNATIONAL
                            ULTROX INTERNATIONAL
                            VAPEX
                            VAPEX
                            VERSAR INC.
                            VERSAR INC.
                            VERSAR INC.
                            VERSAR INC.
                            VERSAR INC.
                            VERSAR INC.
                            VERSAR INC.
                            VERSAR INC.
                            VERSAR INC.
                            WASTE STREAM TECHNOLOGY,  INC.
                            WASTE STREAM TECHNOLOGY,  INC.
                            WASTE STREAM TECHNOLOGY,  INC.
                            WASTE STREAM TECHNOLOGY,  INC.
                            WASTE STREAM TECHNOLOGY,  INC.
                            WESTERN RESEARCH INSTITUTE
                            WESTERN RESEARCH INSTITUTE
                            WESTERN RESEARCH INSTITUTE
                            ZENON ENVIRONMENTAL
                            ZENON ENVIRONMENTAL
                            ZENON ENVIRONMENTAL
                            ZENON ENVIRONMENTAL
                            ZENON ENVIRONMENTAL
                            ZENON ENVIRONMENTAL
                            ZENON ENVIRONMENTAL
                            ZIMPRO PASSAVANT
                            ZIMPRO PASSAVANT
                            ZIMPRO PASSAVANT
                            ZIMPRO PASSAVANT
                            ZIMPRO PASSAVANT
AEROBIC BIOLOGICAL
BIODEGRADATION-SLURRY PHASE
BIODEGRADATION-SOLID PHASE
IN SITU BIODEGRADATION
IN SITU SOIL FLUSHING
IN SITU VACUUM & STEAM EXTRACT
ION EXCHANGE
SOIL WASHING
BIODEGRADATION-SLURRY PHASE
BIODEGRADATION-SOLID PHASE
IN SITU BIODEGRADATION
IN SITU SOIL FLUSHING
UV/DEEP TREATMENT
VAPOR EXTRACTION
ADSORPTION
AEROBIC BIOLOGICAL
BIODEGRADATION-LAND FARMING
CHEMICAL PRECIPITATION
SOIL WASHING
STRIPPING
UV/OXIDATION
UV/OXIDATION
IN SITU VACUUM EXTRACTION
IN SITU VACUUM EXTRACTION
ADSORPTION
CHEMICAL EXTRACTION
INCINERATION
LIQUID-LIQUID EXTRACTION
PACT
STABILIZATION/SOLIDIFICATION
STRIPPING
VITRIFICATION
WET AIR OXIDATION
AEROBIC BIOLOGICAL
BIODEGRADATION-COMPOSTING
BIODEGRADATION-SLURRY PHASE
BIODEGRADATION-SOLID PHASE
IN SITU BIODEGRADATION
BIODEGRADATION-SLURRY PHASE
IN SITU BIODEGRADATION
IN SITU SOIL FLUSHING
ACTIVATED CARBON
ACTIVATED SLUDGE
BIODEGRADATION-NOS
CHEMICAL PRECIPITATION
CHEMICAL REDUCTION
REVERSE OSMOSIS
STABILIZATION/SOLIDIFICATION
ACTIVATED SLUDGE
ADSORPTION
AEROBIC BIOLOGICAL
AEROBIC PACT
ANAEROBIC BIOLOGICAL
                                                 221

-------
CONTAMINANT GROUP
                                TABLE # 4 (CONTINUED)

                                   COMPANY NAME
                                                                            TREATMENT TECHNOLOGY
HALOGENATED VOLATILES
                            2IMPRO PASSAVANT
                            ZIMPRO PASSAVANT
                            ZIMPRO PASSAVANT
                            ZIMPRO PASSAVANT
ANAEROBIC PACT
ROTATING BIOLOGICAL CONTACTORS
STRIPPING
WET AIR OXIDATION
INORGANIC CORROSIVES
                            AAA CSI
                            AAA CSI
                            AAA CSI
                            AAA CSI
                            AAA CSI
                            AAA CSI
                            AAA CSI
                            AAA CSI
                            AAA CSI
                            AAA CSI
                            AAA CSI
                            AAA CSI
                            AAA CSI
                            AAA CSI
                            AAA CSI
                            AAA CSI
                            AAA CSI
                            AAA CSI
                            AAA CSI
                            AAA CSI
                            AM CSI
                            AM CSI
                            MA CSI
                            APPLIED SURFACE TECHNOLOGY
                            APPLIED SURFACE TECHNOLOGY
                            APPLIED SURFACE TECHNOLOGY
                            APPLIED SURFACE TECHNOLOGY
                            APPLIED SURFACE TECHNOLOGY
                            APPLIED SURFACE TECHNOLOGY
                            APPLIED SURFACE TECHNOLOGY
                            APPLIED SURFACE TECHNOLOGY
                            APPLIED SURFACE TECHNOLOGY
                            APPLIED SURFACE TECHNOLOGY
                            APPLIED SURFACE TECHNOLOGY
                            APPLIED SURFACE TECHNOLOGY
                            APPLIED SURFACE TECHNOLOGY
                            APPLIED SURFACE TECHNOLOGY
                            APPLIED SURFACE TECHNOLOGY
                            APPLIED SURFACE TECHNOLOGY
                            APPLIED SURFACE TECHNOLOGY
                            APPLIED SURFACE TECHNOLOGY
                            APPLIED SURFACE TECHNOLOGY
                            APPLIED SURFACE TECHNOLOGY
                            APPLIED SURFACE TECHNOLOGY
                            APPLIED SURFACE TECHNOLOGY
                            APPLIED SURFACE TECHNOLOGY
                            DIVERSIFIED ENGINEERING, INC.
                            DIVERSIFIED ENGINEERING, INC.
ACTIVATED CARBON
ADSORPTION
CATALYSIS
CENTRIFUGATION
CHEMICAL EXTRACTION
CHEMICAL OXIDATION
CHEMICAL PRECIPITATION
CHEMICAL REDUCTION
CHEMICAL TREATMENT
CRYSTALLIZATION
FILTRATION
IN SITU VACUUM & STEAM EXTRACT
INCINERATION
INCINERATION
LIQUID-LIQUID EXTRACTION
LOW TEMP THERMAL STRIPPING
NEUTRALIZATION
SOLVENT RECOVERY
STABILIZATION/SOLIDIFICATION
STRIPPING
THERMAL PROCESSING
WET AIR OXIDATION
WET AIR OXIDATION
ACTIVATED CARBON
ADSORPTION
CATALYSIS
CHEMICAL EXTRACTION
CHEMICAL OXIDATION
CHEMICAL PRECIPITATION
CHEMICAL TREATMENT
CHLORINATION
CRYSTALLIZATION
ELECTRODIALYSIS
ELECTROLYSIS
FLUID-BED STRIPPING
IN SITU SOIL FLUSHING
ION EXCHANGE
LOW TEMP THERMAL STRIPPING
OZONATION
REVERSE OSMOSIS
SOIL WASHING
SOLIDIFICATION
STABILIZATION
STRIPPING
THERMAL DECOMPOSITION
ULTRAFILTRATION
CENTRIFUGATION
CHEMICAL OXIDATION
                                                 222

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CONTAMINANT GROUP
                                TABLE # 4 (CONTINUED)

                                   COMPANY NAME
       TREATMENT TECHNOLOGY
INORGANIC CORROSIVES
                            DIVERSIFIED ENGINEERING, INC.
                            DIVERSIFIED ENGINEERING, INC.
                            DIVERSIFIED ENGINEERING, INC.
                            DIVERSIFIED ENGINEERING, INC.
                            DIVERSIFIED ENGINEERING, INC.
                            DIVERSIFIED ENGINEERING, INC.
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E H & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E H & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            EARTH TECHNOLOGY CORP.
                            EARTH TECHNOLOGY CORP.
                            ENERGY&ENVIRONMENTAL RESEARCH CORP.
                            ENRECO TECHNOLOGIES GROUP
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
CHEMICAL PRECIPITATION
CHEMICAL REDUCTION
COAGULATION
FILTRATION
INCINERATION
NEUTRALIZATION
ACTIVATED CARBON
ACTIVATED SLUDGE
ADSORPTION
AEROBIC BIOLOGICAL
ANAEROBIC BIOLOGICAL
BIODEGRADATION-NOS
CATALYSIS
CHEMICAL EXTRACTION
CHEMICAL OXIDATION
CHEMICAL PRECIPITATION
CHEMICAL REDUCTION
CHEMICAL TREATMENT
CHLORINATION
CRYSTALLIZATION
IN SITU SOIL FLUSHING
INCINERATION
ION EXCHANGE
LIQUID-LIQUID EXTRACTION
LOW TEMP THERMAL STRIPPING
NEUTRALIZATION
OZONATION
REVERSE OSMOSIS
SOLVENT RECOVERY
STABILIZATION
STRIPPING
VITRIFICATION
WET AIR OXIDATION
SOIL WASHING
STABILIZATION/SOLIDIFICATION
INCINERATION
STABILIZATION/SOLIDIFICATION
ACTIVATED SLUDGE
ADSORPTION
BIODEGRADATION-NOS
BIODEGRADATION-NOS
CHEMICAL EXTRACTION
CHEMICAL OXIDATION
CHEMICAL PRECIPITATION
CHEMICAL REDUCTION
CHEMICAL TREATMENT
CHLORINATION
FILTRATION
IN SITU BIODEGRADATION
IN SITU SOIL FLUSHING
IN SITU VACUUM & STEAM EXTRACT
INCINERATION
ION EXCHANGE
                                                 223

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CONTAMINANT GROUP
TABLE # 4 (CONTINUED)

   COMPANY NAME
                                                                            TREATMENT TECHNOLOGY
INORGANIC CORROSIVES
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENVIRONMENTAL RESOURCE ASSOCIATES
                            ENVIRONMENTAL RESOURCE ASSOCIATES
                            ENVIRONMENTAL RESOURCE ASSOCIATES
                            ENVIRONMENTAL RESOURCE ASSOCIATES
                            ENVIRONMENTAL RESOURCE ASSOCIATES
                            ENVIRONMENTAL RESOURCE ASSOCIATES
                            ENVIRONMENTAL RESOURCE ASSOCIATES
                            ENVIRONMENTAL RESOURCE ASSOCIATES
                            ENVIRONMENTAL RESOURCE ASSOCIATES
                            GENERAL PHYSICS CORPORATION
                            GENERAL PHYSICS CORPORATION
                            GENERAL PHYSICS CORPORATION
                            HUNTER SERVICES, INC.
                            HUNTER SERVICES, INC.
                            HUNTER SERVICES, INC.
                            HUNTER SERVICES, INC.
                            HUNTER SERVICES, INC.
                            HUNTER SERVICES, INC.
                            HUNTER SERVICES, INC.
                            HUNTER SERVICES, INC.
                            INTERNATIONAL PROCESS RESEARCH CORP
                            INTERNATIONAL PROCESS RESEARCH CORP
                            INTERNATIONAL PROCESS RESEARCH CORP
                            INTERNATIONAL PROCESS RESEARCH CORP
                            INTERNATIONAL PROCESS RESEARCH CORP
                            INTERNATIONAL PROCESS RESEARCH CORP
                            INTERNATIONAL PROCESS RESEARCH CORP
                            INTERNATIONAL PROCESS RESEARCH CORP
                            INTERNATIONAL PROCESS RESEARCH CORP
                            INTERNATIONAL PROCESS RESEARCH CORP
                            INTERNATIONAL PROCESS RESEARCH CORP
                            INTERNATIONAL PROCESS RESEARCH CORP
                            INTERNATIONAL PROCESS RESEARCH CORP
                            INTERNATIONAL PROCESS RESEARCH CORP
                            INTERNATIONAL PROCESS RESEARCH CORP
                            INTERNATIONAL PROCESS RESEARCH CORP
                            INTERNATIONAL PROCESS RESEARCH CORP
                            INTERNATIONAL PROCESS RESEARCH CORP
                            INTERNATIONAL PROCESS RESEARCH CORP
                            INTERNATIONAL PROCESS RESEARCH CORP
                            INTERNATIONAL PROCESS RESEARCH CORP
                            INTERNATIONAL PROCESS RESEARCH CORP
                            INTERNATIONAL PROCESS RESEARCH CORP
                            IT CORPORATION
                            IT CORPORATION
                            IT CORPORATION
                                     LOW TEMP THERMAL STRIPPING
                                     NEUTRALIZATION
                                     SOIL WASHING
                                     STABILIZATION/SOLIDIFICATION
                                     STABILIZATION/SOLIDIFICATION
                                     STRIPPING
                                     VITRIFICATION
                                     ACTIVATED CARBON
                                     ACTIVATED SLUDGE
                                     AEROBIC BIOLOGICAL
                                     CHEMICAL OXIDATION
                                     CHEMICAL PRECIPITATION
                                     CHEMICAL REDUCTION
                                     ION EXCHANGE
                                     NEUTRALIZATION
                                     STRIPPING
                                     ADSORPTION
                                     IN SITU BIODEGRADATION
                                     OZONATION
                                     ADSORPTION
                                     ADSORPTION
                                     CHEMICAL OXIDATION
                                     CHEMICAL OXIDATION
                                     CHEMICAL PRECIPITATION
                                     CHEMICAL PRECIPITATION
                                     COAGULATION/FLOCCULATION
                                     COAGULATION/FLOCCULATI ON
                                     ACTIVATED CARBON
                                     ADSORPTION
                                     AEROBIC BIOLOGICAL
                                     ANAEROBIC BIOLOGICAL
                                     BIODEGRADATION-NOS
                                     CHEMICAL EXTRACTION
                                     CHEMICAL OXIDATION
                                     CHEMICAL PRECIPITATION
                                     CHEMICAL REDUCTION
                                     CHEMICAL TREATMENT
                                     CHLORINAT ION
                                     CRYSTALLIZATION
                                     IN SITU BIODEGRADATION
                                     INCINERATION
                                     ION EXCHANGE
                                     LIQUID-LIQUID EXTRACTION
                                     NEUTRALIZATION
                                     OZONATION
                                     SOIL WASHING
                                     SOLVENT RECOVERY
                                     STABILIZATION/SOLIDIFICATION
                                     STRIPPING
                                     WET AIR OXIDATION
                                     CHEMICAL OXIDATION
                                     ELECTROCHEMICAL SEPARATION
                                     NEUTRALIZATION
                                                 224

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CONTAMINANT GROUP
                                TABLE # 4 (CONTINUED)

                                   COMPANY NAME
       TREATMENT TECHNOLOGY
INORGANIC CORROSIVES
                            JACOBS ENGINEERING GROUP,  INC.
                            JACOBS ENGINEERING GROUP,  INC.
                            KIBER ASSOCIATES, INC.
                            KIBER ASSOCIATES, INC.
                            KIBER ASSOCIATES, INC.
                            MCNAMEE ADVANCED TECHNOLOGY, INC.
                            MCNAMEE ADVANCED TECHNOLOGY, INC.
                            MCNAMEE ADVANCED TECHNOLOGY, INC.
                            MCNAMEE ADVANCED TECHNOLOGY, INC.
                            O'BRIEN AND GERE ENGINEERS, INC.
                            O'BRIEN AND GERE ENGINEERS, INC.
                            O'BRIEN AND GERE ENGINEERS, INC.
                            O'BRIEN AND GERE ENGINEERS, INC.
                            O'BRIEN AND GERE ENGINEERS, INC.
                            O'BRIEN AND GERE ENGINEERS, INC.
                            REMEDIATION TECHNOLOGIES
                            REMEDIATION TECHNOLOGIES
                            REMEDIATION TECHNOLOGIES
                            REMEDIATION TECHNOLOGIES
                            RIVER OAK ASSOCIATES
                            RIVER OAK ASSOCIATES
                            RIVER OAK ASSOCIATES
                            RIVER OAK ASSOCIATES
                            RIVER OAK ASSOCIATES
                            RIVER OAK ASSOCIATES
                            RIVER OAK ASSOCIATES
                            RIVER OAK ASSOCIATES
                            RIVER OAK ASSOCIATES
                            RIVER OAK ASSOCIATES
                            RMT, INC.
                            RMT, INC.
                            RMT, INC.
                            RMT, INC.
                            RMT, INC.
                            RMT, INC.
                            RMT, INC.
                            RMT, INC.
                            RMT, INC.
                            RMT, INC.
                            RMT, INC.
                            RMT, INC.
                            RMT, INC.
                            RMT, INC.
                            RNK ENVIRONMENTAL, INC.
                            ROY F. WESTON, INC.
                            ROY F. WESTON, INC.
                            ROY F. UESTON, INC.
                            ROY F. WESTON, INC.
                            ROY F. WESTON, INC.
                            ROY F. WESTON, INC.
                            ROY F. WESTON, INC.
                            ROY F. WESTON, INC.
                            ROY F. WESTON, INC.
PHYSICAL SEPARATION
STABILIZATION/SOLIDIFICATION
STABILIZATION/SOLIDIFICATION
STABILIZATION/SOLIDIFICATION
STABILIZATION/SOLIDIFICATION
NEUTRALIZATION
STABILIZATION
STABILIZATION/SOLIDIFICATION
VITRIFICATION
CHEMICAL OXIDATION
CHEMICAL REDUCTION
CHLORINATION
IN SITU BIODEGRADATION
NEUTRALIZATION
OZONATION
CHEMICAL EXTRACTION
IN SITU BIODEGRADATION
IN SITU SOIL FLUSHING
SOIL WASHING
ACTIVATED CARBON
ADSORPTION
CHLORINATION
CRYSTALLIZATION
ELECTRODIALYSIS
ION EXCHANGE
NEUTRALIZATION
NEUTRALIZATION
OZONATION
STRIPPING
ACTIVATED CARBON
ACTIVATED SLUDGE
ADSORPTION
CHEMICAL PRECIPITATION
CHEMICAL TREATMENT
DISTILLATION
ELECTRODIALYSIS
EVAPORATION
INCINERATION
ION EXCHANGE
NEUTRALIZATION
REVERSE OSMOSIS
STABILIZATION/SOLIDIFICATION
WET AIR OXIDATION
NEUTRALIZATION
ACTIVATED CARBON
CENTRIFUGATION
CHEMICAL EXTRACTION
CHEMICAL OXIDATION
CHEMICAL PRECIPITATION
CHEMICAL REDUCTION
CHEMICAL TREATMENT
CHLORINATION
COAGULATION/FLOCCULATION
                                                 225

-------
CONTAMINANT GROUP
    TABLE # 4 (CONTINUED)

       COMPANY NAME
                                                                            TREATMENT TECHNOLOGY
INORGANIC CORROSIVES
INORGANIC CYANIDES
ROY F. WESTON, INC.
ROY F. WESTON, INC.
ROY F. WESTON, INC.
ROY F. WESTON, INC.
ROY F. WESTON, INC.
ROY F. WESTON, INC.
ROY F. WESTON, INC.
ROY F. WESTON, INC.
ROY F. WESTON, INC.
ROY F. WESTON, INC.
ROY F. WESTON, INC.
ROY F. WESTON, INC.
VERSAR INC.
VERSAR INC.
VERSAR INC.
VERSAR INC.
VERSAR INC.
ZENON ENVIRONMENTAL
ZENON ENVIRONMENTAL
ZENON ENVIRONMENTAL
ZENON ENVIRONMENTAL
ZIMPRO PASSAVANT

APPLIED SURFACE TECHNOLOGY
APPLIED SURFACE TECHNOLOGY
APPLIED SURFACE TECHNOLOGY
APPLIED SURFACE TECHNOLOGY
APPLIED SURFACE TECHNOLOGY
APPLIED SURFACE TECHNOLOGY
APPLIED SURFACE TECHNOLOGY
APPLIED SURFACE TECHNOLOGY
APPLIED SURFACE TECHNOLOGY
APPLIED SURFACE TECHNOLOGY
APPLIED SURFACE TECHNOLOGY
APPLIED SURFACE TECHNOLOGY
APPLIED SURFACE TECHNOLOGY
APPLIED SURFACE TECHNOLOGY
APPLIED SURFACE TECHNOLOGY
APPLIED SURFACE TECHNOLOGY
APPLIED SURFACE TECHNOLOGY
APPLIED SURFACE TECHNOLOGY
APPLIED SURFACE TECHNOLOGY
APPLIED SURFACE TECHNOLOGY
APPLIED SURFACE TECHNOLOGY
APPLIED SURFACE TECHNOLOGY
APPLIED SURFACE TECHNOLOGY
BIOSCIENCE MANAGEMENT, INC.
BIOSCIENCE MANAGEMENT, INC.
BIOSCIENCE MANAGEMENT, INC.
BIOSCIENCE MANAGEMENT, INC.
BIOSCIENCE MANAGEMENT, INC.
BIOSCIENCE MANAGEMENT, INC.
BIOSCIENCE MANAGEMENT, INC.
FILTRATION
FILTRATION
FLOTATION THICKENING
GRAVITY THICKENING
IN SITU SOIL FLUSHING
ION EXCHANGE
NEUTRALIZATION
OZONATION
SEDIMENTATION
SOIL WASHING
STABILIZATION/SOLIDIFICATION
STRIPPING
CHEMICAL OXIDATION
CHEMICAL PRECIPITATION
ION EXCHANGE
NEUTRALIZATION
STABILIZATION/SOLIDIFICATION
ACTIVATED SLUDGE
BIODEGRADATION-NOS
REVERSE OSMOSIS
STABILIZATION/SOLIDIFICATION
WET AIR OXIDATION

ACTIVATED CARBON
ADSORPTION
CATALYSIS
CHEMICAL EXTRACTION
CHEMICAL OXIDATION
CHEMICAL PRECIPITATION
CHEMICAL TREATMENT
CHLORINATION
CRYSTALLIZATION
ELECTRODIALYSIS
ELECTROLYSIS
FLUID-BED STRIPPING
IN SITU SOIL FLUSHING
ION EXCHANGE
LOW TEMP THERMAL STRIPPING
OZONATION
REVERSE OSMOSIS
SOIL WASHING
SOLIDIFICATION
STABILIZATION
STRIPPING
THERMAL DECOMPOSITION
ULTRAFILTRATION
AEROBIC BIOLOGICAL
BIODEGRADATION-COMPOSTING
BIODEGRADATION-SLURRY PHASE
BIODEGRADATION-SOLID PHASE
IN SITU BIODEGRADATION
NEUTRALIZATION
STRIPPING
                                                 226

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CONTAMINANT GROUP
                                TABLE # 4 (CONTINUED)

                                   COMPANY NAME
       TREATMENT TECHNOLOGY
INORGANIC CYANIDES
                            DIVERSIFIED ENGINEERING,  INC.
                            DIVERSIFIED ENGINEERING,  INC.
                            DIVERSIFIED ENGINEERING,  INC.
                            DIVERSIFIED ENGINEERING,  INC.
                            DIVERSIFIED ENGINEERING,  INC.
                            DIVERSIFIED ENGINEERING,  INC.
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E H & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E H & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E H & C ENGINEERING ASSOCIATES
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
CHEMICAL OXIDATION
CHEMICAL PRECIPITATION
COAGULATION
FILTRATION
FLOCCULATION SETTLING
NEUTRALIZATION
ACTIVATED CARBON
ACTIVATED SLUDGE
ADSORPTION
AEROBIC BIOLOGICAL
ANAEROBIC BIOLOGICAL
BIOOEGRADATION-NOS
CATALYSIS
CHEMICAL EXTRACTION
CHEMICAL OXIDATION
CHEMICAL PRECIPITATION
CHEMICAL REDUCTION
CHEMICAL TREATMENT
CHLORINATION
CRYSTALLIZATION
IN SITU SOIL FLUSHING
INCINERATION
ION EXCHANGE
LIQUID-LIQUID EXTRACTION
LOW TEMP THERMAL STRIPPING
NEUTRALIZATION
OZONATION
REVERSE OSMOSIS
SOLVENT RECOVERY
STABILIZATION
STRIPPING
VITRIFICATION
WET AIR OXIDATION
ACTIVATED SLUDGE
ADSORPTION
BIOOEGRADATION-NOS
BIOOEGRADATION-NOS
CHEMICAL EXTRACTION
CHEMICAL OXIDATION
CHEMICAL PRECIPITATION
CHEMICAL REDUCTION
CHEMICAL TREATMENT
CHLORINATION
FILTRATION
IN SITU BIODEGRADATION
IN SITU SOIL FLUSHING
IN SITU VACUUM & STEAM EXTRACT
INCINERATION
ION EXCHANGE
LOW TEMP THERMAL STRIPPING
NEUTRALIZATION
SOIL WASHING
STABILIZATION/SOLIDIFICATION
                                                 227

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CONTAMINANT GROUP
TABLE # 4 (CONTINUED)

   COMPANY NAME
                                                                            TREATMENT TECHNOLOGY
INORGANIC CYANIDES
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH. INC.
                            GENERAL PHYSICS CORPORATION
                            GENERAL PHYSICS CORPORATION
                            GENERAL PHYSICS CORPORATION
                            INTERNATIONAL PROCESS RESEARCH CORP
                            INTERNATIONAL PROCESS RESEARCH CORP
                            INTERNATIONAL PROCESS RESEARCH CORP
                            INTERNATIONAL PROCESS RESEARCH CORP
                            INTERNATIONAL PROCESS RESEARCH CORP
                            INTERNATIONAL PROCESS RESEARCH CORP
                            INTERNATIONAL PROCESS RESEARCH CORP
                            INTERNATIONAL PROCESS RESEARCH CORP
                            INTERNATIONAL PROCESS RESEARCH CORP
                            INTERNATIONAL PROCESS RESEARCH CORP
                            INTERNATIONAL PROCESS RESEARCH CORP
                            INTERNATIONAL PROCESS RESEARCH CORP
                            INTERNATIONAL PROCESS RESEARCH CORP
                            INTERNATIONAL PROCESS RESEARCH CORP
                            INTERNATIONAL PROCESS RESEARCH CORP
                            INTERNATIONAL PROCESS RESEARCH CORP
                            INTERNATIONAL PROCESS RESEARCH CORP
                            INTERNATIONAL PROCESS RESEARCH CORP
                            INTERNATIONAL PROCESS RESEARCH CORP
                            INTERNATIONAL PROCESS RESEARCH CORP
                            INTERNATIONAL PROCESS RESEARCH CORP
                            INTERNATIONAL PROCESS RESEARCH CORP
                            INTERNATIONAL PROCESS RESEARCH CORP
                            IT CORPORATION
                            IT CORPORATION
                            IT CORPORATION
                            IT CORPORATION
                            KEYSTONE ENVIRONMENTAL RESOURCES
                            KEYSTONE ENVIRONMENTAL RESOURCES
                            KEYSTONE ENVIRONMENTAL RESOURCES
                            KEYSTONE ENVIRONMENTAL RESOURCES
                            KEYSTONE ENVIRONMENTAL RESOURCES
                            KEYSTONE ENVIRONMENTAL RESOURCES
                            MAECORP. INC.
                            MAECORP, INC.
                            MCNAMEE ADVANCED TECHNOLOGY,  INC.
                            MCNAMEE ADVANCED TECHNOLOGY,  INC.
                            MCNAMEE ADVANCED TECHNOLOGY,  INC.
                            MCNAMEE ADVANCED TECHNOLOGY.  INC.
                            MCNAMEE ADVANCED TECHNOLOGY,  INC.
                            MCNAMEE ADVANCED TECHNOLOGY,  INC.
                            MCNAMEE ADVANCED TECHNOLOGY,  INC.
                            MCNAMEE ADVANCED TECHNOLOGY,  INC.
                            MCNAMEE ADVANCED TECHNOLOGY.  INC.
                            MCNAMEE ADVANCED TECHNOLOGY,  INC.
                            MCNAMEE ADVANCED TECHNOLOGY,  INC.
                            MCNAMEE ADVANCED TECHNOLOGY,  INC.
                                     STABILIZATION/SOLIDIFICATION
                                     STRIPPING
                                     VITRIFICATION
                                     ADSORPTION
                                     IN SITU BIODEGRADATION
                                     OZONATION
                                     ACTIVATED CARBON
                                     ADSORPTION
                                     AEROBIC BIOLOGICAL
                                     ANAEROBIC BIOLOGICAL
                                     B10DEGRADATION-NOS
                                     CHEMICAL EXTRACTION
                                     CHEMICAL OXIDATION
                                     CHEMICAL PRECIPITATION
                                     CHEMICAL REDUCTION
                                     CHEMICAL TREATMENT
                                     CHLORINATION
                                     CRYSTALLIZATION
                                     IN SITU BIODEGRADATION
                                     INCINERATION
                                     ION EXCHANGE
                                     LIQUID-LIQUID EXTRACTION
                                     NEUTRALIZATION
                                     OZONATION
                                     SOIL WASHING
                                     SOLVENT RECOVERY
                                     STABILIZATION/SOLIDIFICATION
                                     STRIPPING
                                     WET AIR OXIDATION
                                     CHEMICAL EXTRACTION
                                     CHEMICAL OXIDATION
                                     CHLORINATION
                                     STABILIZATION/SOLIDIFICATION
                                     ACTIVATED SLUDGE
                                     AEROBIC BIOLOGICAL
                                     IN SITU BIODEGRADATION
                                     ION EXCHANGE
                                     OZONATION
                                     REVERSE OSMOSIS
                                     CHEMICAL OXIDATION
                                     CHEMICAL TREATMENT
                                     ACTIVATED SLUDGE
                                     AEROBIC BIOLOGICAL
                                     CHEMICAL EXTRACTION
                                     CHEMICAL OXIDATION
                                     CHEMICAL TREATMENT
                                     CHLORINATION
                                     ION EXCHANGE
                                     OZONATION
                                     PACT
                                     UV/OXIDATION
                                     WET AIR OXIDATION
                                     WET AIR OXIDATION
                                                 228

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CONTAMINANT GROUP
                                TABLE # 4 (CONTINUED)

                                   COMPANY NAME
       TREATMENT TECHNOLOGY
INORGANIC CYANIDES
                            O'BRIEN AND GERE ENGINEERS, INC.
                            O'BRIEN AND GERE ENGINEERS, INC.
                            O'BRIEN AND GERE ENGINEERS, INC.
                            O'BRIEN AND GERE ENGINEERS, INC.
                            O'BRIEN AND GERE ENGINEERS, INC.
                            REMEDIATION TECHNOLOGIES
                            REMEDIATION TECHNOLOGIES
                            REMEDIATION TECHNOLOGIES
                            REMEDIATION TECHNOLOGIES
                            RIVER OAK ASSOCIATES
                            RIVER OAK ASSOCIATES
                            RIVER OAK ASSOCIATES
                            RIVER OAK ASSOCIATES
                            RIVER OAK ASSOCIATES
                            RIVER OAK ASSOCIATES
                            RIVER OAK ASSOCIATES
                            RIVER OAK ASSOCIATES
                            RIVER OAK ASSOCIATES
                            RIVER OAK ASSOCIATES
                            RMT, INC.
                            RMT, INC.
                            RMT, INC.
                            RMT, INC.
                            RMT, INC.
                            RMT, INC.
                            RMT, INC.
                            RMT, INC.
                            RMT, INC.
                            RMT, INC.
                            RMT, INC.
                            RMT, INC.
                            RMT, INC.
                            RMT, INC.
                            RMT, INC.
                            RMT, INC.
                            ROY F. WESTON, INC.
                            ROY F. UESTON, INC.
                            ROY F. WESTON, INC.
                            ROY F. UESTON, INC.
                            ROY T. WESTON, INC.
                            ROY F. WESTON, INC.
                            ROY F. WESTON, INC.
                            ROY F. WESTON, INC.
                            ROY F. WESTON, INC.
                            ROY F. WESTON, INC.
                            ROY F. WESTON, INC.
                            ROY F. WESTON, INC.
                            ROY F. WESTON, INC.
                            ROY F. WESTON, INC.
                            ROY F. WESTON, INC.
                            ROY F. WESTON, INC.
                            ROY F. WESTON, INC.
                            ROY F. WESTON, INC.
CHEMICAL OXIDATION
CHLORINATION
ION EXCHANGE
OZONATION
UV/PHOTOLYSIS
CHEMICAL EXTRACTION
IN SITU BIODEGRADATION
IN SITU SOIL FLUSHING
SOIL WASHING
ACTIVATED CARBON
ADSORPTION
CHLORINATION
CRYSTALLIZATION
ELECTRCOIALYSIS
ION EXCHANGE
NEUTRALIZATION
NEUTRALIZATION
OZONATION
STRIPPING
ACTIVATED SLUDGE
ADSORPTION
CHEMICAL EXTRACTION
CHEMICAL OXIDATION
CHEMICAL REDUCTION
CHEMICAL TREATMENT
CHLORINATION
DISTILLATION
ELECTRODIALYSIS
EVAPORATION
ION EXCHANGE
OZONATION
REVERSE OSMOSIS
STABILIZATION/SOLIDIFICATION
STRIPPING
WET AIR OXIDATION
ACTIVATED CARBON
CENTRIFUGATION
CHEMICAL EXTRACTION
CHEMICAL OXIDATION
CHEMICAL PRECIPITATION
CHEMICAL REDUCTION
CHEMICAL TREATMENT
CHLORINATION
COAGULATION/FLOCCULATION
FILTRATION
FILTRATION
FLOTATION THICKENING
GRAVITY THICKENING
IN SITU SOIL FLUSHING
ION EXCHANGE
NEUTRALIZATION
OZONATION
SEDIMENTATION
                                                 229

-------
CONTAMINANT GROUP
                                TABLE # 4 (CONTINUED)

                                   COMPANY NAME
       TREATMENT TECHNOLOGY
INORGANIC CYANIDES
                            ROY F. WESTON,  INC.
                            ROY f. WESTON,  INC.
                            ROY F. WESTON,  INC.
                            SYBRON CHEMICALS,  INC.
                            SYBRON CHEMICALS,  INC.
                            SYBRON CHEMICALS,  INC.
                            SYBRON CHEMICALS,  INC.
                            SYBRON CHEMICALS,  INC.
                            SYBRON CHEMICALS,  INC.
                            SYBRON CHEMICALS,  INC.
                            SYBRON CHEMICALS,  INC.
                            SYBRON CHEMICALS,  INC.
                            SYBRON CHEMICALS,  INC.
                            THORNE ENVIRONMENTAL, INC.
                            THORNE ENVIRONMENTAL, INC.
                            ULTROX INTERNATIONAL
                            ULTROX INTERNATIONAL
                            VERSAR INC.
                            VERSAR INC.
                            VERSAR INC.
                            VERSAR INC.
                            VERSAR INC.
                            VERSAR INC.
                            VERSAR INC.
                            VERSAR INC.
                            VERSAR INC.
                            WESTERN RESEARCH INSTITUTE
                            WESTERN RESEARCH INSTITUTE
                            WESTERN RESEARCH INSTITUTE
                            WESTERN RESEARCH INSTITUTE
                            WESTERN RESEARCH INSTITUTE
                            WESTERN RESEARCH INSTITUTE
                            WESTERN RESEARCH INSTITUTE
                            WESTERN RESEARCH INSTITUTE
                            WESTERN RESEARCH INSTITUTE
                            WESTERN RESEARCH INSTITUTE
                            WESTERN RESEARCH INSTITUTE
                            WESTERN RESEARCH INSTITUTE
                            WESTERN RESEARCH INSTITUTE
                            WESTERN RESEARCH INSTITUTE
                            WESTERN RESEARCH INSTITUTE
                            ZENON ENVIRONMENTAL
                            ZENON ENVIRONMENTAL
                            ZENON ENVIRONMENTAL
                            ZENON ENVIRONMENTAL
                            ZIMPRO PASSAVANT
SOIL WASHING
STABILIZATION/SOLIDIFICATION
STRIPPING
ACTIVATED SLUDGE
ADSORPTION
AEROBIC BIOLOGICAL
BIODEGRADATION-SLURRY PHASE
BIODEGRADATION-SOLID PHASE
IN SITU BIODEGRADATION
IN SITU SOIL FLUSHING
IN SITU VACUUM & STEAM EXTRACT
ION EXCHANGE
SOIL WASHING
STABILIZATION/SOLIDIFICATION
UV/DEEP TREATMENT
UV/OXIDATION
UV/OXIDATION
ACTIVATED SLUDGE
ADSORPTION
CHEMICAL OXIDATION
CHEMICAL PRECIPITATION
ELECTROLYTIC OXIDATION
ION EXCHANGE
PACT
STABILIZATION/SOLIDIFICATION
WET AIR OXIDATION
ACTIVATED CARBON
AEROBIC BIOLOGICAL
ANAEROBIC BIOLOGICAL
CHEMICAL OXIDATION
CHEMICAL PRECIPITATION
CHEMICAL REDUCTION
CHLORINATION
DEWATERING
ELECTROCOAGULATION
ION EXCHANGE
LIQUID-SOLID SEPARATION
NEUTRALIZATION
OZONATION
REVERSE OSMOSIS
STRIPPING
ACTIVATED SLUDGE
BIOOEGRADATION-NOS
REVERSE OSMOSIS
STABILIZATION/SOLIDIFICATION
WET AIR OXIDATION
NONHALOGENATED NONVOLATILES AAA CSI
                            AAA CSI
                            AAA CSI
                            AAA CSI
                            AAA CSI
                            AAA CSI
ACTIVATED CARBON
ADSORPTION
CATALYSIS
CENTRIFUGATION
CHEMICAL EXTRACTION
CHEMICAL OXIDATION
                                                 230

-------
CONTAMINANT GROUP
                                TABLE # 4 (CONTINUED)

                                   COMPANY NAME
       TREATMENT TECHNOLOGY
NONHALOGENATED NONVOLATILES
                            AAA CSI
                            AAA CSI
                            AAA CSI
                            AAA CSI
                            AAA CSI
                            AAA CSI
                            AAA CSI
                            AAA CSI
                            AAA CSI
                            AAA CSI
                            AAA CSI
                            AAA CSI
                            AAA CSI
                            AAA CSI
                            AAA CSI
                            AAA CSI
                            AAA CSI
                            ANDCO ENVIRONMENTAL PROCESSES, INC.
                            BIOSCIENCE MANAGEMENT, INC.
                            BIOSCIENCE MANAGEMENT, INC.
                            BIOSCIENCE MANAGEMENT, INC.
                            BIOSCIENCE MANAGEMENT, INC.
                            BIOSCIENCE MANAGEMENT, INC.
                            BIOSCIENCE MANAGEMENT, INC.
                            BIOSCIENCE MANAGEMENT, INC.
                            BIOTROL, INC.
                            C-E ENVIRONMENTAL, INC.
                            C-E ENVIRONMENTAL, INC.
                            C-E ENVIRONMENTAL, INC.
                            C-EE BIOREMEDIATION SYSTEMS
                            C-EE BIOREMEDIATION SYSTEMS
                            C-EE BIOREMEDIATION SYSTEMS
                            C-EE BIOREMEDIATION SYSTEMS
                            C-EE BIOREMEDIATION SYSTEMS
                            C-EE BIOREMEDIATION SYSTEMS
                            C-EE BIOREMEDIATION SYSTEMS
                            C-EE BIOREMEDIATION SYSTEMS
                            C-EE BIOREMEDIATION SYSTEMS
                            C-EE BIOREMEDIATION SYSTEMS
                            C-EE BIOREMEDIATION SYSTEMS
                            C-EE BIOREMEDIATION SYSTEMS
                            C-EE BIOREMEDIATION SYSTEMS
                            C-EE BIOREMEDIATION SYSTEMS
                            C-EE BIOREMEDIATION SYSTEMS
                            C-EE BIOREMEDIATION SYSTEMS
                            CHEMFIX ENVIRONMENTAL  SERVICES
                            DETOX,  INC.
                            DETOX,  INC.
                            DETOX,  INC.
                            DETOX,  INC.
                            DETOX,  INC.
                            DETOX,  INC.
                            DETOX,  INC.
CHEMICAL PRECIPITATION
CHEMICAL REDUCTION
CHEMICAL TREATMENT
CRYSTALLIZATION
FILTRATION
IN SITU VACUUM & STEAM  EXTRACT
INCINERATION
INCINERATION
LIQUID-LIQUID EXTRACTION
LOW  TEMP THERMAL STRIPPING
NEUTRALIZATION
SOLVENT RECOVERY
STABILIZATION/SOLIDIFICATION
STRIPPING
THERMAL PROCESSING
WET  AIR OXIDATION
WET  AIR OXIDATION
ELECTROCHEMICAL
AEROBIC BIOLOGICAL
BIODEGRADATION-COMPOST ING
BIODEGRADATION-SLURRY PHASE
BIODEGRADATION-SOLID PHASE
IN SITU BIODEGRADATION
NEUTRALIZATION
STRIPPING
BIODEGRADATION-AQUEOUS  PHASE
AEROBIC BIOLOGICAL
IN SITU BIODEGRADATION
LOW  TEMP THERMAL EXTRACTION
ACTIVATED CARBON
ACTIVATED SLUDGE
ADSORPTION
AEROBIC BIOLOGICAL
ANAEROBIC BIOLOGICAL
BIODEGRADATION-SOLID PHASE
CHEMICAL EXTRACTION
IN SITU BIODEGRADATION
IN SITU SOIL FLUSHING
IN SITU VACUUM & STEAM  EXTRACT
LIQUID-LIQUID EXTRACTION
LOW  TEMP THERMAL STRIPPING
NEUTRALIZATION
NEUTRALIZATION
SOIL WASHING
STRIPPING
FIXATION/STABILIZATION
ACTIVATED CARBON
ACTIVATED SLUDGE
ADSORPTION
ANAEROBIC BIOLOGICAL
BIODEGRADATION-COMPOST ING
BIODEGRADATION-SLURRY PHASE
BIODEGRADATION-SOLID PHASE
                                                231

-------
CONTAMINANT GROUP
TABLE # 4 (CONTINUED)

   COMPANY NAME
                                                                            TREATMENT  TECHNOLOGY
NONHALOGENATED NONVOLATILES
                            DETOX, INC.
                            DETOX, INC.
                            DETOX, INC.
                            DETOX, INC.
                            DETOX, INC.
                            DETOX, INC.
                            DETOX, INC.
                            DETOX, INC.
                            DETOX, INC.
                            DETOX, INC.
                            DETOX, INC.
                            DETOX, INC.
                            DETOX, INC.
                            DETOX, INC.
                            DIVERSIFIED  ENGINEERING, INC.
                            DIVERSIFIED  ENGINEERING, INC.
                            DIVERSIFIED  ENGINEERING, INC.
                            DIVERSIFIED  ENGINEERING, INC.
                            DIVERSIFIED  ENGINEERING, INC.
                            DIVERSIFIED  ENGINEERING, INC.
                            DIVERSIFIED  ENGINEERING, INC.
                            DIVERSIFIED  ENGINEERING, INC.
                            DIVERSIFIED  ENGINEERING, INC.
                            DIVERSIFIED  ENGINEERING, INC.
                            DIVERSIFIED  ENGINEERING, INC.
                            DIVERSIFIED  ENGINEERING, INC.
                            DIVERSIFIED  ENGINEERING, INC.
                            DIVERSIFIED  ENGINEERING, INC.
                            DIVERSIFIED  ENGINEERING, INC.
                            DIVERSIFIED  ENGINEERING, INC.
                            DIVERSIFIED  ENGINEERING, INC.
                            DIVERSIFIED  ENGINEERING, INC.
                            DIVERSIFIED  ENGINEERING, INC.
                            DIVERSIFIED  ENGINEERING, INC.
                            DIVERSIFIED  ENGINEERING, INC.
                            DIVERSIFIED  ENGINEERING, INC.
                            DIVERSIFIED  ENGINEERING, INC.
                            DIVERSIFIED  ENGINEERING, INC.
                            DIVERSIFIED  ENGINEERING, INC.
                            DIVERSIFIED  ENGINEERING, INC.
                            DIVERSIFIED ENGINEERING, INC.
                            DIVERSIFIED  ENGINEERING, INC.
                            EARTH TECHNOLOGY CORP.
                            EARTH TECHNOLOGY CORP.
                            EARTH TECHNOLOGY CORP.
                            EARTH TECHNOLOGY CORP.
                            ENERGY&ENVIRONMENTAL RESEARCH CORP.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                                     CHEMICAL EXTRACTION
                                     CHEMICAL OXIDATION
                                     CHEMICAL PRECIPITATION
                                     CHEMICAL REDUCTION
                                     CHEMICAL TREATMENT
                                     CHLORINATION
                                     IN SITU BIODEGRADATION
                                     IN SITU SOIL FLUSHING
                                     IN SITU VACUUM & STEAM EXTRACT
                                     IN SITU VITRIFICATION
                                     OZONATION
                                     SOIL WASHING
                                     SOLVENT RECOVERY
                                     STRIPPING
                                     ACTIVATED CARBON ADSORPTION
                                     ACTIVATED SLUDGE
                                     AEROBIC BIOLOGICAL
                                     ANAEROBIC BIOLOGICAL
                                     CEMENT SOLIDIFICATION
                                     CENTRIFUGATION
                                     CHEMICAL OXIDATION
                                     CHEMICAL PRECIPITATION
                                     CHEMICAL REDUCTION
                                     CHLORINATION
                                     COAGULATION
                                     FILTRATION
                                     FLOCCULATION SETTLING
                                     GRAVITY (OIL/WATER)
                                     ION EXCHANGE
                                     LIME SOLIDIFICATION
                                     LIQUID-LIQUID EXTRACTION
                                     NEUTRALIZATION
                                     OIL-WATER SEPARATION
                                     ORGANIC POLYMER SOLIDIFICATION
                                     RESIN ADSORPTION
                                     ROTATING BIOLOGICAL CONTACTORS
                                     SEDIMENTATION
                                     SORBENTS SOLIDIFICATION
                                     THERMOPLASTIC SOLIDIFICATION
                                     TRICKLING FILTERS
                                     ULTRAFILTRATION
                                     WET AIR OXIDATION
                                     BIODEGRADATION-LAND FARMING
                                     IN SITU SOIL FLUSHING
                                     SOIL WASHING
                                     STABILIZATION/SOLIDIFICATION
                                     INCINERATION
                                     ACTIVATED SLUDGE
                                     ADSORPTION
                                     BIODEGRADATION-NOS
                                     BIODEGRADATION-NOS
                                     CHEMICAL EXTRACTION
                                     CHEMICAL OXIDATION
                                                 232

-------
                                TABLE # 4 (CONTINUED)
CONTAMINANT GROUP
                                   COMPANY NAME
                                                                            TREATMENT TECHNOLOGY
NONHALOGENATED NONVOLATILES
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENVIRONMENTAL RESOURCE ASSOCIATES
                            ENVIRONMENTAL RESOURCE ASSOCIATES
                            ENVIRONMENTAL RESOURCE ASSOCIATES
                            ENVIRONMENTAL RESOURCE ASSOCIATES
                            ENVIRONMENTAL RESOURCE ASSOCIATES
                            ENVIRONMENTAL RESOURCE ASSOCIATES
                            ENVIRONMENTAL RESOURCE ASSOCIATES
                            ENVIRONMENTAL RESOURCE ASSOCIATES
                            ENVIRONMENTAL TECHNOLOGY SOUTHEAST
                            ENVIRONMENTAL TECHNOLOGY SOUTHEAST
                            ENVIRONMENTAL TECHNOLOGY SOUTHEAST
                            ENVIRONMENTAL TECHNOLOGY SOUTHEAST
                            ENVIRONMENTAL TECHNOLOGY SOUTHEAST
                            ENVIRONMENTAL TECHNOLOGY SOUTHEAST
                            ENVIRONMENTAL TECHNOLOGY SOUTHEAST
                            ENVIRONMENTAL TECHNOLOGY SOUTHEAST
                            ENVIRONMENTAL TECHNOLOGY SOUTHEAST
                            ENVIRONMENTAL TECHNOLOGY SOUTHEAST
                            ENVIRONMENTAL TECHNOLOGY SOUTHEAST
                            ENVIRONMENTAL TECHNOLOGY SOUTHEAST
                            ENVIRONMENTAL TECHNOLOGY SOUTHEAST
                            ENVIRONMENTAL TECHNOLOGY SOUTHEAST
                            ENVIRONMENTAL TECHNOLOGY SOUTHEAST
                            ENVIRONMENTAL TECHNOLOGY SOUTHEAST
                            ENVIRONMENTAL TECHNOLOGY SOUTHEAST
                            ENVIRONMENTAL TECHNOLOGY SOUTHEAST
                            ENVIROTECH MID-ATLANTIC
                            ENVIROTECH MID-ATLANTIC
                            ENVIROTECH MID-ATLANTIC
                            ENVIROTECH MID-ATLANTIC
                            ENVIROTECH MID-ATLANTIC
                            ENVIROTECH MID-ATLANTIC
                            ENVIROTECH MID-ATLANTIC
                            ENVIROTECH MID-ATLANTIC
                            ENVIROTECH MID-ATLANTIC
                            ENVIROTECH MID-ATLANTIC
CHEMICAL PRECIPITATION
CHEMICAL REDUCTION
CHEMICAL TREATMENT
CHLORINATION
FILTRATION
IN SITU BIODEGRADATION
IN SITU SOIL FLUSHING
IN SITU VACUUM & STEAM EXTRACT
INCINERATION
ION EXCHANGE
LOW TEMP THERMAL STRIPPING
NEUTRALIZATION
SOIL WASHING
STABILIZATION/SOLIDIFICATION
STABILIZATION/SOLIDIFICATION
STRIPPING
VITRIFICATION
ACTIVATED CARBON
ACTIVATED SLUDGE
CHEMICAL OXIDATION
CHEMICAL PRECIPITATION
CHEMICAL REDUCTION
ION EXCHANGE
NEUTRALIZATION
STRIPPING
ACTIVATED CARBON
ACTIVATED SLUDGE
AEROBIC BIOLOGICAL
BIODEGRADATION-COMPOST ING
BIODEGRADATION-SLURRY PHASE
BIODEGRADATION-SOLID PHASE
CHEMICAL OXIDATION
CHEMICAL PRECIPITATION
CHEMICAL REDUCTION
CHLORINATION
IN SITU BIODEGRADATION
IN SITU SOIL FLUSHING
IN SITU VACUUM & STEAM EXTRACT
INCINERATION
ION EXCHANGE
NEUTRALIZATION
SOIL WASHING
STRIPPING
ACTIVATED SLUDGE
ADSORPTION
AEROBIC BIOLOGICAL
ANAEROBIC BIOLOGICAL
BIODEGRADATION-SLURRY PHASE
BIODEGRADATION-SOLID PHASE
CHEMICAL EXTRACTION
CHEMICAL TREATMENT
IN SITU BIODEGRADATION
IN SITU SOIL FLUSHING
                                                 233

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CONTAMINANT GROUP
                                TABLE # 4 (CONTINUED)

                                   COMPANY NAME
       TREATMENT TECHNOLOGY
NONHALOGENATEO NONVOLATILES
                            ENVIROTECH MID-ATLANTIC
                            ENVIROTECH MID-ATLANTIC
                            ENVIROTECH MID-ATLANTIC
                            GENERAL PHYSICS CORPORATION
                            GENERAL PHYSICS CORPORATION
                            GENERAL PHYSICS CORPORATION
                            GENERAL PHYSICS CORPORATION
                            GENERAL PHYSICS CORPORATION
                            GENERAL PHYSICS CORPORATION
                            GENERAL PHYSICS CORPORATION
                            GENERAL PHYSICS CORPORATION
                            GENERAL PHYSICS CORPORATION
                            GENERAL PHYSICS CORPORATION
                            HUNTER BIOSCIENCES, INC.
                            HUNTER BIOSCIENCES, INC.
                            HUNTER BIOSCIENCES, INC.
                            HUNTER BIOSCIENCES, INC.
                            HUNTER BIOSCIENCES, INC.
                            HUNTER BIOSCIENCES, INC.
                            HUNTER BIOSCIENCES, INC.
                            HUNTER SERVICES, INC.
                            HUNTER SERVICES, INC.
                            HUNTER SERVICES, INC.
                            HUNTER SERVICES, INC.
                            HUNTER SERVICES, INC.
                            HUNTER SERVICES, INC.
                            HUNTER SERVICES, INC.
                            HUNTER SERVICES, INC.
                            HUNTER SERVICES, INC.
                            HUNTER SERVICES, INC.
                            HUNTER SERVICES, INC.
                            HUNTER SERVICES, INC.
                            HUNTER SERVICES, INC.
                            HUNTER SERVICES, INC.
                            HUNTER SERVICES, INC.
                            I IT RESEARCH INST
                            I IT RESEARCH INST
                            I IT RESEARCH INST
                            I IT RESEARCH INST
                            IT CORPORATION
                            IT CORPORATION
                            IT CORPORATION
                            IT CORPORATION
                            IT CORPORATION
                            IT CORPORATION
                            IT CORPORATION
                            IT CORPORATION
                            IT CORPORATION
                            IT CORPORATION
                            IT CORPORATION
                            IT CORPORATION
                            IT CORPORATION
                            IT CORPORATION
IN SITU VACUUM & STEAM EXTRACT
ION EXCHANGE
SOIL WASHING
ACTIVATED CARBON
ACTIVATED SLUDGE
ADSORPTION
AEROBIC BIOLOGICAL
ANAEROBIC BIOLOGICAL
CHEMICAL OXIDATION
CHEMICAL REDUCTION
LIQUID-LIQUID EXTRACTION
OZONATION
STRIPPING
ACTIVATED CARBON
ACTIVATED SLUDGE
AEROBIC BIOLOGICAL
IN SITU BIODEGRADATION
IN SITU SOIL FLUSHING
IN SITU VACUUM & STEAM EXTRACT
STRIPPING
ACTIVATED SLUDGE
ADSORPTION
ADSORPTION
CHEMICAL OXIDATION
CHEMICAL OXIDATION
CHEMICAL PRECIPITATION
CHEMICAL PRECIPITATION
CHLORINATION
COAGULATION/FLOCCULATION
COAGULATION/FLOCCULATI ON
LOW TEMP THERMAL STRIPPING
NEUTRALIZATION
OZONATION
STABILIZATION/SOLIDIFICATION
STRIPPING
CHEMICAL EXTRACTION
CHEMICAL TREATMENT
STABILIZATION/SOLIDIFICATION
UV/OZONATION
ACTIVATED CARBON
AEROBIC BIOLOGICAL
CATALYSIS
CHEMICAL EXTRACTION
CHEMICAL OXIDATION
CHEMICAL PRECIPITATION
CHEMICAL REDUCTION
CHLORINATION
ELECTROCHEMICAL SEPARATION
INCINERATION
LIQUID-LIQUID EXTRACTION
LOW TEMP THERMAL STRIPPING
REVERSE OSMOSIS
STABILIZATION/SOLIDIFICATION
                                                 234

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CONTAMINANT GROUP
                                TABLE # 4 (CONTINUED)

                                   COMPANY NAME
        TREATMENT  TECHNOLOGY
NONHALOGENATED NONVOLATILES
                            IT CORPORATION
                            JACOBS ENGINEERING GROUP,  INC.
                            JACOBS ENGINEERING GROUP,  INC.
                            JACOBS ENGINEERING GROUP,  INC.
                            JACOBS ENGINEERING GROUP,  INC.
                            KEYSTONE ENVIRONMENTAL RESOURCES
                            KEYSTONE ENVIRONMENTAL RESOURCES
                            KEYSTONE ENVIRONMENTAL RESOURCES
                            KEYSTONE ENVIRONMENTAL RESOURCES
                            KEYSTONE ENVIRONMENTAL RESOURCES
                            KEYSTONE ENVIRONMENTAL RESOURCES
                            KEYSTONE ENVIRONMENTAL RESOURCES
                            KEYSTONE ENVIRONMENTAL RESOURCES
                            KEYSTONE ENVIRONMENTAL RESOURCES
                            KEYSTONE ENVIRONMENTAL RESOURCES
                            KEYSTONE ENVIRONMENTAL RESOURCES
                            KEYSTONE ENVIRONMENTAL RESOURCES
                            KIBER ASSOCIATES,  INC.
                            KIBER ASSOCIATES,  INC.
                            KIBER ASSOCIATES,  INC.
                            KIBER ASSOCIATES,  INC.
                            KIBER ASSOCIATES,  INC.
                            MCNAMEE ADVANCED TECHNOLOGY,  INC.
                            MCNAMEE ADVANCED TECHNOLOGY,  INC.
                            MCNAMEE ADVANCED TECHNOLOGY,  INC.
                            MCNAMEE ADVANCED TECHNOLOGY,  INC.
                            MCNAMEE ADVANCED TECHNOLOGY,  INC.
                            MCNAMEE ADVANCED TECHNOLOGY,  INC.
                            MCNAMEE ADVANCED TECHNOLOGY,  INC.
                            MCNAMEE ADVANCED TECHNOLOGY,  INC.
                            MCNAMEE ADVANCED TECHNOLOGY,  INC.
                            MCNAMEE ADVANCED TECHNOLOGY,  INC.
                            MCNAMEE ADVANCED TECHNOLOGY,  INC.
                            MCNAMEE ADVANCED TECHNOLOGY,  INC.
                            MCNAMEE ADVANCED TECHNOLOGY,  INC.
                            MCNAMEE ADVANCED TECHNOLOGY,  INC.
                            MCNAMEE ADVANCED TECHNOLOGY,  INC.
                            MCNAMEE ADVANCED TECHNOLOGY,  INC.
                            MCNAMEE ADVANCED TECHNOLOGY,  INC.
                            MCNAMEE ADVANCED TECHNOLOGY,  INC.
                            MCNAMEE ADVANCED TECHNOLOGY,  INC.
                            MCNAMEE ADVANCED TECHNOLOGY,  INC.
                            MIDWEST RESEARCH INSTITUTE
                            MIDWEST RESEARCH INSTITUTE
                            MIDWEST RESEARCH INSTITUTE
                            MIDWEST RESEARCH INSTITUTE
                            O'BRIEN AND GERE ENGINEERS, INC.
                            O'BRIEN AND GERE ENGINEERS, INC.
                            O'BRIEN AND GERE ENGINEERS, INC.
                            O'BRIEN AND GERE ENGINEERS, INC.
                            O'BRIEN AND GERE ENGINEERS, INC.
                            O'BRIEN AND GERE ENGINEERS, INC.
                            O'BRIEN AND GERE ENGINEERS, INC.
WET AIR OXIDATION
ACTIVATED  SLUDGE
AEROBIC BIOLOGICAL
CHEMICAL OXIDATION
LIQUID-LIQUID  EXTRACTION
ACTIVATED  CARBON
ACTIVATED  SLUDGE
AEROBIC BIOLOGICAL
BIODEGRADATION-SLURRY  PHASE
BIODEGRADATION-SOLID PHASE
CHEMICAL OXIDATION
COAGULATION/FLOCCULATI ON
DISSOLVED  AIR  FLOTATION
FILTRATION/NEUTRAL IZ/PRECIPIT.
IN SITU BIODEGRADATION
OZONATION
SOIL WASHING
ACTIVATED  CARBON
CHEMICAL PRECIPITATION
STABILIZATION/SOLIDIFICATION
STABILIZATION/SOLIDIFICATION
STABILIZATION/SOLIDIFICATION
ACTIVATED  CARBON
ACTIVATED  SLUDGE
ADSORPTION
AEROBIC BIOLOGICAL
ANAEROBIC  BIOLOGICAL
BIODEGRADATION-COMPOST ING
BIODEGRADATION-SLURRY  PHASE
BIODEGRADATION-SOLID PHASE
CHEMICAL EXTRACTION
CHEMICAL TREATMENT
CHLORINATION
INCINERATION
LIQUID-LIQUID EXTRACTION
PACT
SOLVENT RECOVERY
THERMAL COMBUSTION
UV/OXIDATION
VITRIFICATION
WET AIR OXIDATION
WET AIR OXIDATION
ACTIVATED  CARBON
BIODEGRADATION-NOS
COMBUSTOR  EQUIPPED W/MASS SPEC
INCINERATION
ACTIVATED  CARBON
ACTIVATED  SLUDGE
AEROBIC BIOLOGICAL
ANAEROBIC  BIOLOGICAL
BIODEGRADATION-NOS
CHEMICAL OXIDATION
CHLORINATION
                                                235

-------
CONTAMINANT GROUP
                                TABLE # 4 (CONTINUED)

                                   COMPANY NAME
       TREATMENT TECHNOLOGY
NONHALOGENATEO NONVOLATILES
                            O'BRIEN AND GERE ENGINEERS, INC.
                            O'BRIEN AND GERE ENGINEERS, INC.
                            O'BRIEN AND GERE ENGINEERS, INC.
                            O'BRIEN AND GERE ENGINEERS, INC.
                            O'BRIEN AND GERE ENGINEERS, INC.
                            O'BRIEN AND GERE ENGINEERS, INC.
                            O'BRIEN AND GERE ENGINEERS, INC.
                            O'BRIEN AND GERE ENGINEERS, INC.
                            OGDEN ENVIRONMENTAL SERVICES, INC.
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION/SPAR
                            PETROLEUM TESTING SERVICE, INC.
                            PLASMA HOLDINGS, N.V.
                            PYROGENICS, INC.
                            PYROGENICS, INC.
                            PYROGENICS, INC.
                            QUALTEC, INC.
                            QUALTEC, INC.
                            QUALTEC, INC.
                            RADIAN CORPORATION
                            RADIAN CORPORATION
                            RADIAN CORPORATION
                            RADIAN CORPORATION
                            RADIAN CORPORATION
                            RADIAN CORPORATION
                            RADIAN CORPORATION
                            RADIAN CORPORATION
                            RADIAN CORPORATION
IN SITU BIODEGRADATION
IN SITU SOIL FLUSHING
LIQUID-LIQUID EXTRACTION
OZONATION
SOIL WASHING
SOLVENT RECOVERY
STABILIZATION/SOLIDIFICATION
STRIPPING
INCINERATION
ACTIVATED CARBON
ACTIVATED SLUDGE
ADSORPTION
AEROBIC BIOLOGICAL
ANAEROBIC BIOLOGICAL
BIODEGRADATION-NOS
BIODEGRADATION-NOS
BIODEGRADATION-SOLID PHASE
CHEMICAL EXTRACTION
CHEMICAL OXIDATION
CHEMICAL PRECIPITATION
CHEMICAL TREATMENT
CHLORINATION
CRYSTALLIZATION
DEWATERING
IN SITU BIODEGRADATION
IN SITU BIODEGRADATION
IN SITU SOIL FLUSHING
IN SITU VACUUM & STEAM EXTRACT
INCINERATION
NEUTRALIZATION
OIL-UATER SEPARATION
SOIL WASHING
STABILIZATION/SOLIDIFICATION
STRIPPING
THERMAL COMBUSTION
SOLVENT RECOVERY
IN SITU VACUUM & STEAM EXTRACT
SSP-PLASMA SLUDGE
DEWATERING
THERMAL DESTRUCTION
VITRIFICATION
CHEMICAL PRECIPITATION
ION EXCHANGE
STABILIZATION/SOLIDIFICATION
ACTIVATED CARBON
ACTIVATED SLUDGE
ANAEROBIC BIOLOGICAL
CHEMICAL EXTRACTION
CHEMICAL OXIDATION
CHEMICAL PRECIPITATION
CHLORINATION
ELECTRODIALYSIS
ION EXCHANGE
                                                 236

-------
CONTAMINANT GROUP
                                TABLE # 4 (CONTINUED)

                                   COMPANY NAME
       TREATMENT TECHNOLOGY
NONHALOGENATED NONVOLATILES
                            RADIAN CORPORATION
                            RADIAN CORPORATION
                            RADIAN CORPORATION
                            RADIAN CORPORATION
                            REMEDIATION TECHNOLOGIES
                            REMEDIATION TECHNOLOGIES
                            REMEDIATION TECHNOLOGIES
                            REMEDIATION TECHNOLOGIES
                            REMEDIATION TECHNOLOGIES
                            REMEDIATION TECHNOLOGIES
                            REMEDIATION TECHNOLOGIES
                            REMEDIATION TECHNOLOGIES
                            REMEDIATION TECHNOLOGIES
                            RIVER OAK ASSOCIATES
                            RIVER OAK ASSOCIATES
                            RIVER OAK ASSOCIATES
                            RIVER OAK ASSOCIATES
                            RIVER OAK ASSOCIATES
                            RIVER OAK ASSOCIATES
                            RIVER OAK ASSOCIATES
                            RIVER OAK ASSOCIATES
                            RIVER OAK ASSOCIATES
                            RIVER OAK ASSOCIATES
                            RIVER OAK ASSOCIATES
                            RIVER OAK ASSOCIATES
                            RIVER OAK ASSOCIATES
                            RMC ENV & ANALYTICAL LABORATORIES
                            RMC ENV & ANALYTICAL LABORATORIES
                            RMC ENV & ANALYTICAL LABORATORIES
                            RMC ENV & ANALYTICAL LABORATORIES
                            RMC ENV & ANALYTICAL LABORATORIES
                            RMC ENV & ANALYTICAL LABORATORIES
                            RMC ENV & ANALYTICAL LABORATORIES
                            RMT,  INC.
                            RMT,  INC.
                            RMT,  INC.
                            RMT.  INC.
                            RMT,  INC.
                            RMT,  INC.
                            RMT,  INC.
                            RMT,  INC.
                            RMT,  INC.
                            RMT,  INC.
                            RMT,  INC.
                            RMT,  INC.
                            RMT,  INC.
                            RMT,  INC.
                            RMT,  INC.
                            RMT,  INC.
                            RMT,  INC.
                            RNK ENVIRONMENTAL,  INC.
                            RNK ENVIRONMENTAL,  INC.
                            RNK ENVIRONMENTAL,  INC.
OZONATION
REVERSE OSMOSIS
STABILIZATION/SOLIDIFICATION
STRIPPING
ACTIVATED CARBON
ANAEROBIC BIOLOGICAL
BIODEGRADATION-SOLID PHASE
CHEMICAL EXTRACTION
IN SITU BIODEGRADATION
IN SITU VACUUM & STEAM EXTRACT
SOIL WASHING
STABILIZATION/SOLIDIFICATION
STRIPPING
ACTIVATED CARBON
ADSORPTION
AEROBIC BIOLOGICAL
ANAEROBIC BIOLOGICAL
CHEMICAL OXIDATION
CHEMICAL PRECIPITATION
CHEMICAL REDUCTION
CRYSTALLIZATION
ELECTRODIALYSIS
NEUTRALIZATION
NEUTRALIZATION
OZONATION
REVERSE OSMOSIS
CHEMICAL EXTRACTION
CHEMICAL TREATMENT
IN SITU VACUUM & STEAM EXTRACT
IN SITU VITRIFICATION
INCINERATION
SOIL WASHING
STABILIZATION/SOLIDIFICATION
ACTIVATED SLUDGE
ADSORPTION
AEROBIC BIOLOGICAL
ANAEROBIC BIOLOGICAL
BIODEGRADATION-NOS
BIODEGRADATION-SLURRY PHASE
CATALYSIS
CHEMICAL OXIDATION
CHEMICAL PRECIPITATION
CHEMICAL TREATMENT
CHLORINAT ION
EVAPORATION
INCINERATION
LIQUID-LIQUID EXTRACTION
SOIL WASHING
STABILIZATION/SOLIDIFICATION
WET AIR OXIDATION
ACTIVATED CARBON
AEROBIC BIOLOGICAL
BICOEGRADATION-COMPOST ING
                                                237

-------
CONTAMINANT GROUP
TABLE # 4 (CONTINUED)

   COMPANY NAME
                                                                            TREATMENT TECHNOLOGY
NONHALOGENATED NONVOLATILES
                            RNK ENVIRONMENTAL, INC.
                            RNK ENVIRONMENTAL, INC.
                            RNK ENVIRONMENTAL, INC.
                            RNK ENVIRONMENTAL, INC.
                            RNK ENVIRONMENTAL, INC.
                            ROY F. WESTON, INC.
                            ROY F. WESTON, INC.
                            ROY F. WESTON, INC.
                            ROY F. WESTON, INC.
                            ROY F. WESTON, INC.
                            ROY F. WESTON, INC.
                            ROY F. WESTON, INC.
                            ROY F. WESTON, INC.
                            ROY F. WESTON, INC.
                            ROY F. WESTON, INC.
                            ROY F. WESTON, INC.
                            ROY F. WESTON, INC.
                            ROY F. WESTON, INC.
                            ROY F. WESTON, INC.
                            ROY F. WESTON, INC.
                            ROY F. WESTON, INC.
                            ROY F. WESTON, INC.
                            ROY F. WESTON, INC.
                            ROY F. WESTON, INC.
                            ROY F. WESTON, INC.
                            ROY F. WESTON, INC.
                            ROY F. WESTON, INC.
                            ROY F. WESTON, INC.
                            ROY F. WESTON, INC.
                            ROY F. WESTON, INC.
                            ROY F. WESTON, INC.
                            ROY F. WESTON, INC.
                            ROY F. WESTON, INC.
                            ROY F. WESTON, INC.
                            ROY F. WESTON, INC.
                            ROY F. WESTON, INC.
                            ROY F. WESTON, INC.
                            SOUTHERN RESEARCH INSTITUTE
                            SYBRON CHEMICALS, INC.
                            SYBRON CHEMICALS, INC.
                            SYBRON CHEMICALS, INC.
                            SYBRON CHEMICALS, INC.
                            SYBRON CHEMICALS, INC.
                            SYBRON CHEMICALS, INC.
                            SYBRON CHEMICALS, INC.
                            SYBRON CHEMICALS, INC.
                            THORNE ENVIRONMENTAL,  INC.
                            THORNE ENVIRONMENTAL,  INC.
                            THORNE ENVIRONMENTAL,  INC.
                            THORNE ENVIRONMENTAL,  INC.
                            THORNE ENVIRONMENTAL,  INC.
                            TREATEK, INC.
                            TREATEK, INC.
                                     BIODEGRADATION-NOS
                                     CHEMICAL OXIDATION
                                     CHEMICAL REDUCTION
                                     CHLORI NAT ION
                                     SOIL WASHING
                                     ACTIVATED CARBON
                                     ACTIVATED SLUDGE
                                     AEROBIC BIOLOGICAL
                                     ANAEROBIC BIOLOGICAL
                                     BIODEGRADATION-COMPOSTING
                                     BIODEGRADATION-SLURRY PHASE
                                     BIODEGRADATION-SOLID PHASE
                                     CENTRIFUGATION
                                     CHEMICAL EXTRACTION
                                     CHEMICAL OXIDATION
                                     CHEMICAL PRECIPITATION
                                     CHEMICAL REDUCTION
                                     CHEMICAL TREATMENT
                                     CHLORINATION
                                     COAGULATION/FLOCCULATION
                                     FILTRATION
                                     FILTRATION
                                     FLOTATION THICKENING
                                     GRAVITY THICKENING
                                     IN SITU BIODEGRADATION
                                     IN SITU RADIO FREQUENCY HTG
                                     IN SITU SOIL FLUSHING
                                     IN SITU VACUUM & STEAM EXTRACT
                                     INCINERATION
                                     ION EXCHANGE
                                     LOW TEMP THERMAL STRIPPING
                                     NEUTRALIZATION
                                     OZONATION
                                     SEDIMENTATION
                                     SOIL WASHING
                                     STABILIZATION/SOLIDIFICATION
                                     STRIPPING
                                     IN SITU BIODEGRADATION
                                     ACTIVATED SLUDGE
                                     AEROBIC BIOLOGICAL
                                     BIODEGRADATION-SLURRY PHASE
                                     BIODEGRADATION-SOLID PHASE
                                     IN SITU BIODEGRADATION
                                     IN SITU SOIL FLUSHING
                                     IN SITU VACUUM & STEAM EXTRACT
                                     ION EXCHANGE
                                     BIODEGRADATION-SLURRY PHASE
                                     BIODEGRADATION-SOLID PHASE
                                     IN SITU BIODEGRADATION
                                     IN SITU SOIL FLUSHING
                                     UV/DEEP TREATMENT
                                     ADSORPTION
                                     AEROBIC BIOLOGICAL
                                                 238

-------
CONTAMINANT GROUP
                                TABLE # 4 (CONTINUED)

                                   COMPANY NAME
       TREATMENT TECHNOLOGY
NONHALOGENATED NONVOLATILES
                            TREATEK, INC.
                            TREATEK, INC.
                            TREATEK, INC.
                            VERSAR INC.
                            VERSAR INC.
                            VERSAR INC.
                            VERSAR INC.
                            VERSAR INC.
                            VERSAR INC.
                            VERSAR INC.
                            VERSAR INC.
                            VERSAR INC.
                            VERSAR INC.
                            VERSAR INC.
                            WASTE STREAM TECHNOLOGY, INC.
                            WASTE STREAM TECHNOLOGY, INC.
                            WASTE STREAM TECHNOLOGY, INC.
                            WASTE STREAM TECHNOLOGY, INC.
                            WASTE STREAM TECHNOLOGY, INC.
                            WESTERN RESEARCH INSTITUTE
                            WESTERN RESEARCH INSTITUTE
                            WESTERN RESEARCH INSTITUTE
                            WESTERN RESEARCH INSTITUTE
                            WESTERN RESEARCH INSTITUTE
                            WESTERN RESEARCH INSTITUTE
                            WESTERN RESEARCH INSTITUTE
                            WESTERN RESEARCH INSTITUTE
                            WESTERN RESEARCH INSTITUTE
                            WESTERN RESEARCH INSTITUTE
                            WESTERN RESEARCH INSTITUTE
                            WESTERN RESEARCH INSTITUTE
                            WESTERN RESEARCH INSTITUTE
                            WESTERN RESEARCH INSTITUTE
                            WESTERN RESEARCH INSTITUTE
                            WESTERN RESEARCH INSTITUTE
                            WESTERN RESEARCH INSTITUTE
                            WESTERN RESEARCH INSTITUTE
                            WESTERN RESEARCH INSTITUTE
                            WESTERN RESEARCH INSTITUTE
                            WESTERN RESEARCH INSTITUTE
                            WESTERN RESEARCH INSTITUTE
                            WESTERN RESEARCH INSTITUTE
                            WESTERN RESEARCH INSTITUTE
                            ZENON ENVIRONMENTAL
                            ZENON ENVIRONMENTAL
                            ZENON ENVIRONMENTAL
                            ZENON ENVIRONMENTAL
                            ZENON ENVIRONMENTAL
                            ZENON ENVIRONMENTAL
                            ZENON ENVIRONMENTAL
                            ZIMPRO PASSAVANT
                            ZIMPRO PASSAVANT
                            ZIMPRO PASSAVANT
CHEMICAL PRECIPITATION
SOIL WASHING
STRIPPING
ADSORPTION
ANAEROBIC BIOLOGICAL
CHEMICAL EXTRACTION
CHEMICAL OXIDATION
INCINERATION
LIQUID-LIQUID EXTRACTION
PACT
STABILIZATION/SOLIDIFICATION
STRIPPING
VITRIFICATION
WET AIR OXIDATION
AEROBIC BIOLOGICAL
BIODEGRADATION-COMPOSTING
BIODEGRADATION-SLURRY PHASE
BIODEGRADATION-SOLID PHASE
IN SITU BIODEGRADATION
ACTIVATED CARBON
AEROBIC BIOLOGICAL
ANAEROBIC BIOLOGICAL
BIODEGRADATION-SLURRY PHASE
CHEMICAL PRECIPITATION
CHEMICAL REDUCTION
CHLORINATION
COAGULATION/FLOCCULATION
DEWATERING
ELECTROCOAGULATION
FLOTATION
IN SITU BIODEGRADATION
INCINERATION
ION EXCHANGE
LIQUID-LIQUID EXTRACTION
LIQUID-SOLID SEPARATION
NEUTRALIZATION
OZONATION
REVERSE OSMOSIS
SOIL WASHING
SPRAY DRYING
STABILIZATION/SOLIDIFICATION
STRIPPING
WET AIR OXIDATION
ACTIVATED CARBON
ACTIVATED SLUDGE
BIODEGRADATION-NOS
CHEMICAL PRECIPITATION
CHEMICAL REDUCTION
REVERSE OSMOSIS
STABILIZATION/SOLIDIFICATION
ACTIVATED SLUDGE
ADSORPTION
AEROBIC BIOLOGICAL
                                                239

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CONTAMINANT GROUP
                                TABLE # 4 (CONTINUED)

                                   COMPANY NAME
       TREATMENT TECHNOLOGY
NONHALOGENATED NONVOLATILES
                            ZIHPRO PASSAVANT
                            ZIMPRO PASSAVANT
                            ZIMPRO PASSAVANT
                            ZIMPRO PASSAVANT
                            ZIMPRO PASSAVANT
AEROBIC PACT
ANAEROBIC BIOLOGICAL
ANAEROBIC PACT
ROTATING BIOLOGICAL CONTACTORS
WET AIR OXIDATION
NONHALOGENATED VOLATILES
                            AAA CSI
                            AAA CSI
                            AAA CSI
                            AAA CSI
                            AAA CSI
                            AAA CSI
                            AAA CSI
                            AAA CSI
                            AAA CSI
                            AAA CSI
                            AAA CSI
                            AAA CSI
                            AAA CSI
                            AAA CSI
                            AAA CSI
                            AAA CSI
                            AAA CSI
                            AAA CSI
                            AAA CSI
                            AAA CSI
                            AAA CSI
                            AAA CSI
                            AAA CSI
                            ANDCO ENVIRONMENTAL PROCESSES, INC.
                            APPLIED REMEDIATION TECHNOLOGY, INC
                            BIOSCIENCE MANAGEMENT, INC.
                            BIOSCIENCE MANAGEMENT, INC.
                            BIOSCIENCE MANAGEMENT, INC.
                            BIOSCIENCE MANAGEMENT, INC.
                            BIOSCIENCE MANAGEMENT, INC.
                            BIOSCIENCE MANAGEMENT, INC.
                            BIOSCIENCE MANAGEMENT, INC.
                            BIOTROL,  INC.
                            BIOTROL,  INC.
                            BIOTROL,  INC.
                            BIOTROL,  INC.
                            C-E ENVIRONMENTAL,  INC.
                            C-E ENVIRONMENTAL,  INC.
                            C-E ENVIRONMENTAL,  INC.
                            C-E ENVIRONMENTAL,  INC.
                            C-E ENVIRONMENTAL,  INC.
                            C-E ENVIRONMENTAL,  INC.
                            C-E ENVIRONMENTAL,  INC.
                            C-E ENVIRONMENTAL,  INC.
                            C-EE BIOREMEDIATION SYSTEMS
                            C-EE BIOREMEDIATION SYSTEMS
                            C-EE BIOREMEDIATION SYSTEMS
ACTIVATED CARBON
ADSORPTION
CATALYSIS
CENTRIFUGATION
CHEMICAL EXTRACTION
CHEMICAL OXIDATION
CHEMICAL PRECIPITATION
CHEMICAL REDUCTION
CHEMICAL TREATMENT
CRYSTALLIZATION
FILTRATION
IN SITU VACUUM & STEAM EXTRACT
INCINERATION
INCINERATION
LIQUID-LIQUID EXTRACTION
LOW TEMP THERMAL STRIPPING
NEUTRALIZATION
SOLVENT RECOVERY
STABILIZATION/SOLIDIFICATION
STRIPPING
THERMAL PROCESSING
WET AIR OXIDATION
WET AIR OXIDATION
STRIPPING
LOW ENERGY EXTRACTION PROCESS
AEROBIC BIOLOGICAL
BIODEGRADATION-COMPOSTING
BIODEGRADATION-SLURRY PHASE
BIODEGRADATION-SOLID PHASE
IN SITU BIODEGRADATION
NEUTRALIZATION
STRIPPING
BIODEGRADATION-AQUEOUS PHASE
BIODEGRADATION-LAND  FARMING
BIODEGRADATION-SLURRY PHASE
SOIL  WASHING
ACTIVATED CARBON
ADSORPTION
ADSORPTION
AEROBIC BIOLOGICAL
BIODEGRADATION-NOS
IN SITU BIODEGRADATION
STRIPPING
UV/OXIDATION
ACTIVATED CARBON
ACTIVATED SLUDGE
ADSORPTION
                                                 240

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CONTAMINANT GROUP
                                TABLE # 4 (CONTINUED)

                                   COMPANY NAME
       TREATMENT TECHNOLOGY
NONHALOGENATED VOLATILES
                            C-EE BIOREMEDIATION SYSTEMS
                            C-EE BIOREMEDIATION SYSTEMS
                            C-EE BIOREMEDIATION SYSTEMS
                            C-EE BIOREMEDIATION SYSTEMS
                            C-EE BIOREMEDIATION SYSTEMS
                            C-EE BIOREMEDIATION SYSTEMS
                            C-EE BIOREMEDIATION SYSTEMS
                            C-EE BIOREMEDIATION SYSTEMS
                            C-EE BIOREMEDIATION SYSTEMS
                            C-EE BIOREMEDIATION SYSTEMS
                            C-EE BIOREMEDIATION SYSTEMS
                            C-EE BIOREMEDIATION SYSTEMS
                            CAMBRIDGE SCIENTIFIC, INC.
                            CHEMFIX ENVIRONMENTAL SERVICES
                            CYTO CULTURE ENVIRON. BIOTECH.
                            CYTO CULTURE ENVIRON. BIOTECH.
                            CYTO CULTURE ENVIRON. BIOTECH.
                            CYTO CULTURE ENVIRON. BIOTECH.
                            CYTO CULTURE ENVIRON. BIOTECH.
                            CYTO CULTURE ENVIRON. BIOTECH.
                            DETOX, INC.
                            DETOX, INC.
                            DETOX, INC.
                            DETOX, INC.
                            DETOX, INC.
                            DETOX, INC.
                            DETOX, INC.
                            DETOX, INC.
                            DETOX, INC.
                            DETOX, INC.
                            DETOX, INC.
                            DETOX, INC.
                            DETOX, INC.
                            DETOX, INC.
                            DETOX, INC.
                            DETOX, INC.
                            DETOX, INC.
                            DETOX, INC.
                            DETOX, INC.
                            DETOX, INC.
                            DETOX, INC.
                            DIVERSIFIED ENGINEERING, INC.
                            DIVERSIFIED ENGINEERING, INC.
                            DIVERSIFIED ENGINEERING, INC.
                            DIVERSIFIED ENGINEERING, INC.
                            DIVERSIFIED ENGINEERING, INC.
                            DIVERSIFIED ENGINEERING, INC.
                            DIVERSIFIED ENGINEERING, INC.
                            DIVERSIFIED ENGINEERING, INC.
                            DIVERSIFIED ENGINEERING, INC.
                            EARTH TECHNOLOGY CORP.
                            EARTH TECHNOLOGY CORP.
                            EARTH TECHNOLOGY CORP.
AEROBIC BIOLOGICAL
BIODEGRADATION-SOLID PHASE
CHEMICAL EXTRACTION
IN SITU BIODEGRADATION
IN SITU SOIL FLUSHING
IN SITU VACUUM & STEAM EXTRACT
LIQUID-LIQUID EXTRACTION
LOW TEMP THERMAL STRIPPING
NEUTRALIZATION
NEUTRALIZATION
SOIL WASHING
STRIPPING
SOLVENT RECOVERY
FIXATION/STABILIZATION
AEROBIC BIOLOGICAL
BIODEGRADATION-COMPOSTING
BIODEGRADATION-NOS
BIODEGRADATION-SOLID PHASE
IN SITU SOIL FLUSHING
SOIL WASHING
ACTIVATED CARBON
ACTIVATED SLUDGE
ADSORPTION
ANAEROBIC BIOLOGICAL
BIODEGRADATION-COMPOSTING
BIODEGRADATION-SLURRY PHASE
BIODEGRADATION-SOLID PHASE
CHEMICAL EXTRACTION
CHEMICAL OXIDATION
CHEMICAL PRECIPITATION
CHEMICAL REDUCTION
CHEMICAL TREATMENT
CHLORINATION
IN SITU BIODEGRADATION
IN SITU SOIL FLUSHING
IN SITU VACUUM & STEAM EXTRACT
IN SITU VITRIFICATION
OZONATION
SOIL WASHING
SOLVENT RECOVERY
STRIPPING
ACTIVATED CARBON ADSORPTION
CHLORINATION
DISTILLATION
EVAPORATION
GRAVITY (OIL/WATER)
INCINERATION
OIL-WATER SEPARATION
RESIN ADSORPTION
SOLVENT RECOVERY
ACTIVATED CARBON
ADSORPTION
IN SITU VACUUM & STEAM EXTRACT
                                                 241

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CONTAMINANT GROUP
                                TABLE # It (CONTINUED)

                                   COMPANY NAME
       TREATMENT TECHNOLOGY
NONHALOGENATEO VOLATILES
                            EARTH TECHNOLOGY CORP.
                            EARTH TECHNOLOGY CORP.
                            EARTH TECHNOLOGY CORP.
                            ENERGY&ENVIRONMENTAL RESEARCH CORP.
                            ENRECO TECHNOLOGIES GROUP
                            ENRECO TECHNOLOGIES GROUP
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENVIRONMENTAL REMEDIATION, INC.
                            ENVIRONMENTAL REMEDIATION, INC.
                            ENVIRONMENTAL REMEDIATION, INC.
                            ENVIRONMENTAL REMEDIATION, INC.
                            ENVIRONMENTAL REMEDIATION, INC.
                            ENVIRONMENTAL REMEDIATION, INC.
                            ENVIRONMENTAL REMEDIATION, INC.
                            ENVIRONMENTAL REMEDIATION, INC.
                            ENVIRONMENTAL RESOURCE ASSOCIATES
                            ENVIRONMENTAL RESOURCE ASSOCIATES
                            ENVIRONMENTAL RESOURCE ASSOCIATES
                            ENVIRONMENTAL RESOURCE ASSOCIATES
                            ENVIRONMENTAL RESOURCE ASSOCIATES
                            ENVIRONMENTAL RESOURCE ASSOCIATES
                            ENVIRONMENTAL RESOURCE ASSOCIATES
                            ENVIRONMENTAL RESOURCE ASSOCIATES
                            ENVIRONMENTAL TECHNOLOGY SOUTHEAST
                            ENVIRONMENTAL TECHNOLOGY SOUTHEAST
                            ENVIRONMENTAL TECHNOLOGY SOUTHEAST
                            ENVIRONMENTAL TECHNOLOGY SOUTHEAST
                            ENVIRONMENTAL TECHNOLOGY SOUTHEAST
                            ENVIRONMENTAL TECHNOLOGY SOUTHEAST
                            ENVIRONMENTAL TECHNOLOGY SOUTHEAST
                            ENVIRONMENTAL TECHNOLOGY SOUTHEAST
SOIL WASHING
STABILIZATION/SOLIDIFICATION
UV/OXIDATION
INCINERATION
CHEMICAL EXTRACTION
STABILIZATION/SOLIDIFICATION
ACTIVATED SLUDGE
ADSORPTION
BIODEGRADATION-NOS
BIODEGRADATION-NOS
CHEMICAL EXTRACTION
CHEMICAL OXIDATION
CHEMICAL PRECIPITATION
CHEMICAL REDUCTION
CHEMICAL TREATMENT
CHLORINATION
FILTRATION
IN SITU BIODEGRADATION
IN SITU SOIL FLUSHING
IN SITU VACUUM & STEAM EXTRACT
INCINERATION
ION EXCHANGE
LOW TEMP THERMAL STRIPPING
NEUTRALIZATION
SOIL WASHING
STABILIZATION/SOLIDIFICATION
STABILIZATION/SOLIDIFICATION
STRIPPING
VITRIFICATION
ACTIVATED SLUDGE
AEROBIC BIOLOGICAL
8IOOEGRADATION-COMPOST ING
BIODEGRADATION-SLURRY  PHASE
BIODEGRADATION-SOLID PHASE
CHEMICAL TREATMENT
IN SITU BIODEGRADATION
SOIL WASHING
ACTIVATED CARBON
ACTIVATED SLUDGE
CHEMICAL OXIDATION
CHEMICAL PRECIPITATION
CHEMICAL REDUCTION
ION EXCHANGE
NEUTRALIZATION
STRIPPING
ACTIVATED CARBON
ACTIVATED SLUDGE
AEROBIC BIOLOGICAL
BIODEGRADATION - COMPOST ING
BIODEGRADATION-SLURRY  PHASE
BIODEGRADATI ON-SOL ID PHASE
CHEMICAL OXIDATION
CHEMICAL PRECIPITATION
                                                 242

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CONTAMINANT GROUP
                                TABLE # 4 (CONTINUED)

                                   COMPANY NAME
       TREATMENT TECHNOLOGY
NONHALOGENATED VOLATILES
                            ENVIRONMENTAL TECHNOLOGY SOUTHEAST
                            ENVIRONMENTAL TECHNOLOGY SOUTHEAST
                            ENVIRONMENTAL TECHNOLOGY SOUTHEAST
                            ENVIRONMENTAL TECHNOLOGY SOUTHEAST
                            ENVIRONMENTAL TECHNOLOGY SOUTHEAST
                            ENVIRONMENTAL TECHNOLOGY SOUTHEAST
                            ENVIRONMENTAL TECHNOLOGY SOUTHEAST
                            ENVIRONMENTAL TECHNOLOGY SOUTHEAST
                            ENVIRONMENTAL TECHNOLOGY SOUTHEAST
                            ENVIRONMENTAL TECHNOLOGY SOUTHEAST
                            ENVIROSAFE TECHNOLOGIES, INC.
                            ENVIROTECH MID-ATLANTIC
                            ENVIROTECH MID-ATLANTIC
                            ENVIROTECH MID-ATLANTIC
                            ENVIROTECH MID-ATLANTIC
                            ENVIROTECH MID-ATLANTIC
                            ENVIROTECH MID-ATLANTIC
                            ENVIROTECH MID-ATLANTIC
                            ENVIROTECH MID-ATLANTIC
                            ENVIROTECH MID-ATLANTIC
                            ENVIROTECH MID-ATLANTIC
                            ENVIROTECH MID-ATLANTIC
                            ENVIROTECH MID-ATLANTIC
                            ENVIROTECH MID-ATLANTIC
                            FREEZE TECHNOLOGIES CORPORATION
                            GENERAL PHYSICS CORPORATION
                            GENERAL PHYSICS CORPORATION
                            GENERAL PHYSICS CORPORATION
                            GENERAL PHYSICS CORPORATION
                            GENERAL PHYSICS CORPORATION
                            GENERAL PHYSICS CORPORATION
                            GENERAL PHYSICS CORPORATION
                            GENERAL PHYSICS CORPORATION
                            GENERAL PHYSICS CORPORATION
                            GENERAL PHYSICS CORPORATION
                            HUNTER BIOSCIENCES,  INC.
                            HUNTER BIOSCIENCES,  INC.
                            HUNTER BIOSCIENCES,  INC.
                            HUNTER BIOSCIENCES,  INC.
                            HUNTER BIOSCIENCES,  INC.
                            HUNTER BIOSCIENCES,  INC.
                            HUNTER SERVICES,  INC.
                            HUNTER SERVICES,  INC.
                            HUNTER SERVICES,  INC.
                            HUNTER SERVICES,  INC.
                            HUNTER SERVICES,  INC.
                            HUNTER SERVICES,  INC.
                            HUNTER SERVICES,  INC.
                            HUNTER SERVICES,  INC.
                            HUNTER SERVICES,  INC.
                            HUNTER SERVICES,  INC.
                            HUNTER SERVICES,  INC.
                            HUNTER SERVICES,  INC.
CHEMICAL REDUCTION
CHLORINATION
IN  SITU BIODEGRADATION
IN  SITU SOIL  FLUSHING
IN  SITU VACUUM  &  STEAM  EXTRACT
INCINERATION
ION EXCHANGE
NEUTRALIZATION
SOIL WASHING
STRIPPING
IN  SITU VACUUM  EXTRACTION
ACTIVATED  SLUDGE
ADSORPTION
AEROBIC BIOLOGICAL
ANAEROBIC  BIOLOGICAL
BIODEGRADATION-SLURRY PHASE
BIODEGRADATION-SOLID PHASE
CHEMICAL EXTRACTION
CHEMICAL TREATMENT
IN  SITU BIODEGRADATION
IN  SITU SOIL  FLUSHING
IN  SITU VACUUM  &  STEAM  EXTRACT
ION EXCHANGE
SOIL WASHING
FREEZE CRYSTALLIZATION
ACTIVATED  CARBON
ACTIVATED  SLUDGE
ADSORPTION
AEROBIC BIOLOGICAL
ANAEROBIC  BIOLOGICAL
CHEMICAL OXIDATION
CHEMICAL REDUCTION
LIQUID-LIQUID EXTRACTION
OZONATION
STRIPPING
ACTIVATED  CARBON
ACTIVATED  SLUDGE
AEROBIC BIOLOGICAL
IN  SITU SOIL FLUSHING
IN  SITU VACUUM &  STEAM  EXTRACT
STRIPPING
ACTIVATED  SLUDGE
ADSORPTION
ADSORPTION
CHEMICAL OXIDATION
CHEMICAL OXIDATION
CHEMICAL PRECIPITATION
CHEMICAL PRECIPITATION
CHLORINATION
COAGULATION/FLOCCULATION
COAGULATION/FLOCCULATION
LOW TEMP THERMAL STRIPPING
NEUTRALIZATION
                                                243

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CONTAMINANT GROUP
                                TABLE # 4 (CONTINUED)

                                   COMPANY NAME
                                                                            TREATMENT TECHNOLOGY
NONHALOGENATED VOLATILES
                            HUNTER SERVICES, INC.
                            HUNTER SERVICES, INC.
                            HUNTER SERVICES, INC.
                            INTERNATIONAL PROCESS  RESEARCH CORP
                            INTERNATIONAL PROCESS  RESEARCH CORP
                            INTERNATIONAL PROCESS  RESEARCH CORP
                            INTERNATIONAL PROCESS  RESEARCH CORP
                            INTERNATIONAL PROCESS  RESEARCH CORP
                            INTERNATIONAL PROCESS  RESEARCH CORP
                            INTERNATIONAL PROCESS  RESEARCH CORP
                            INTERNATIONAL PROCESS  RESEARCH CORP
                            INTERNATIONAL PROCESS  RESEARCH CORP
                            INTERNATIONAL PROCESS  RESEARCH CORP
                            INTERNATIONAL PROCESS  RESEARCH CORP
                            INTERNATIONAL PROCESS  RESEARCH CORP
                            INTERNATIONAL PROCESS  RESEARCH CORP
                            INTERNATIONAL PROCESS  RESEARCH CORP
                            INTERNATIONAL PROCESS  RESEARCH CORP
                            INTERNATIONAL PROCESS  RESEARCH CORP
                            INTERNATIONAL PROCESS  RESEARCH CORP
                            INTERNATIONAL PROCESS  RESEARCH CORP
                            INTERNATIONAL PROCESS  RESEARCH CORP
                            INTERNATIONAL PROCESS  RESEARCH CORP
                            INTERNATIONAL PROCESS  RESEARCH CORP
                            INTERNATIONAL PROCESS  RESEARCH CORP
                            IT CORPORATION
                            IT CORPORATION
                            IT CORPORATION
                            IT CORPORATION
                            IT CORPORATION
                            IT CORPORATION
                            IT CORPORATION
                            IT CORPORATION
                            IT CORPORATION
                            JACOBS ENGINEERING GROUP, INC.
                            JACOBS ENGINEERING GROUP, INC.
                            JACOBS ENGINEERING GROUP, INC.
                            JACOBS ENGINEERING GROUP, INC.
                            KEYSTONE ENVIRONMENTAL RESOURCES
                            KEYSTONE ENVIRONMENTAL RESOURCES
                            KEYSTONE ENVIRONMENTAL RESOURCES
                            KEYSTONE ENVIRONMENTAL RESOURCES
                            KEYSTONE ENVIRONMENTAL RESOURCES
                            KIBER ASSOCIATES, INC.
                            K1BER ASSOCIATES, INC.
                            KIBER ASSOCIATES, INC.
                            KIBER ASSOCIATES, INC.
                            KIBER ASSOCIATES, INC.
                            KSE, INC.
                            KSE, INC.
                            KSE, INC.
                            KSE, INC.
                            KSE, INC.
020NATION
STABILIZATION/SOLIDIFICATION
STRIPPING
ACTIVATED CARBON
ADSORPTION
AEROBIC BIOLOGICAL
ANAEROBIC BIOLOGICAL
BIODEGRADATION-NOS
CHEMICAL EXTRACTION
CHEMICAL OXIDATION
CHEMICAL PRECIPITATION
CHEMICAL REDUCTION
CHEMICAL TREATMENT
CHLORINATION
CRYSTALLIZATION
IN SITU BIODEGRADATION
INCINERATION
ION EXCHANGE
LIQUID-LIQUID EXTRACTION
OZONATION
SOIL WASHING
SOLVENT RECOVERY
STABILIZATION/SOLIDIFICATION
STRIPPING
WET AIR OXIDATION
ACTIVATED CARBON
CATALYSIS
CHEMICAL OXIDATION
INCINERATION
LOU TEMP THERMAL STRIPPING
SOLVENT RECOVERY
STABILIZATION/SOLIDIFICATION
STRIPPING
WET AIR OXIDATION
ACTIVATED SLUDGE
AEROBIC BIOLOGICAL
CHEMICAL OXIDATION
LIQUID-LIQUID EXTRACTION
ACTIVATED CARBON
DISSOLVED AIR FLOTATION
IN SITU BIODEGRADATION
OZONATION
STRIPPING
ACTIVATED CARBON
CHEMICAL PRECIPITATION
STABILIZATION/SOLIDIFICATION
STABILIZATION/SOLIDIFICATION
STABILIZATION/SOLIDIFICATION
ACTIVATED CARBON
ADSORPTION
CATALYSIS
CHEMICAL EXTRACTION
LOW TEMP THERMAL STRIPPING
                                                 244

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CONTAMINANT GROUP
                                TABLE # 4 (CONTINUED)

                                   COMPANY NAME
       TREATMENT TECHNOLOGY
NONHALOGENATED VOLATILES
                            KSE, INC.
                            KSE, INC.
                            KSE, INC.
                            KSE, INC.
                            MAECORP, INC.
                            MAECORP, INC.
                            MAECORP, INC.
                            MAECORP, INC.
                            MAECORP, INC.
                            MARINE POLUTION CONTROL
                            MARINE POLUTION CONTROL
                            MARINE POLUTION CONTROL
                            MCNAMEE ADVANCED TECHNOLOGY, INC.
                            MCNAMEE ADVANCED TECHNOLOGY, INC.
                            MCNAMEE ADVANCED TECHNOLOGY, INC.
                            MCNAMEE ADVANCED TECHNOLOGY, INC.
                            MCNAMEE ADVANCED TECHNOLOGY, INC.
                            MCNAMEE ADVANCED TECHNOLOGY, INC.
                            MCNAMEE ADVANCED TECHNOLOGY, INC.
                            MCNAMEE ADVANCED TECHNOLOGY, INC.
                            MCNAMEE ADVANCED TECHNOLOGY, INC.
                            MCNAMEE ADVANCED TECHNOLOGY, INC.
                            MCNAMEE ADVANCED TECHNOLOGY, INC.
                            MCNAMEE ADVANCED TECHNOLOGY, INC.
                            MCNAMEE ADVANCED TECHNOLOGY, INC.
                            MCNAMEE ADVANCED TECHNOLOGY, INC.
                            MCNAMEE ADVANCED TECHNOLOGY, INC.
                            MCNAMEE ADVANCED TECHNOLOGY, INC.
                            MCNAMEE ADVANCED TECHNOLOGY, INC.
                            MCNAMEE ADVANCED TECHNOLOGY, INC.
                            MCNAMEE ADVANCED TECHNOLOGY, INC.
                            MEMBRANE TECHNOLOGY & RESEARCH,  INC
                            MEMBRANE TECHNOLOGY & RESEARCH,  INC
                            MIDWEST RESEARCH INSTITUTE
                            MIDWEST RESEARCH INSTITUTE
                            MIDWEST RESEARCH INSTITUTE
                            MIDWEST RESEARCH INSTITUTE
                            O'BRIEN AND  GERE ENGINEERS,  INC.
                            O'BRIEN AND  GERE ENGINEERS,  INC.
                            O'BRIEN AND  GERE ENGINEERS,  INC.
                            O'BRIEN AND  GERE ENGINEERS,  INC.
                            O'BRIEN AND  GERE ENGINEERS.  INC.
                            O'BRIEN AND  GERE ENGINEERS,  INC.
                            O'BRIEN AND  GERE ENGINEERS,  INC.
                            O'BRIEN AND  GERE ENGINEERS,  INC.
                            O'BRIEN AND  GERE ENGINEERS,  INC.
                            OGDEN ENVIRONMENTAL SERVICES,  INC.
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
REVERSE OSMOSIS
SOLVENT RECOVERY
STRIPPING
ULTRAFILTRATION
ADSORPTION/ABSORPTION
IN SITU VACUUM & STEAM EXTRACT
LOW TEMP THERMAL STRIPPING
REVERSE OSMOSIS
STRIPPING
FILTRATION
NEUTRALIZATION
STABILIZATION/SOLIDIFICATION
ACTIVATED CARBON
ACTIVATED SLUDGE
ADSORPTION
AEROBIC BIOLOGICAL
ANAEROBIC BIOLOGICAL
BIODEGRADATION-COMPOSTING
BIODEGRADATION-SLURRY PHASE
BIODEGRADATION-SOLID PHASE
CHEMICAL OXIDATION
CHEMICAL TREATMENT
CHLORINATION
INCINERATION
PACT
SOLVENT RECOVERY
STRIPPING
THERMAL COMBUSTION
UV/OXIDATION
WET AIR OXIDATION
WET AIR OXIDATION
PERVAPORATION
VAPOR SEPARATION
ACTIVATED CARBON
BIODEGRADATION-NOS
COMBUSTOR EQUIPPED W/MASS SPEC
INCINERATION
ACTIVATED CARBON
ACTIVATED SLUDGE
ADSORPTION
AEROBIC BIOLOGICAL
BIODEGRADATION-NOS
IN SITU SOIL FLUSHING
IN SITU VACUUM & STEAM EXTRACT
SOLVENT RECOVERY
STRIPPING
INCINERATION
ACTIVATED CARBON
ACTIVATED SLUDGE
ADSORPTION
AEROBIC BIOLOGICAL
ANAEROBIC BIOLOGICAL
BIODEGRADATION-NOS
                                                 245

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CONTAMINANT GROUP
                                TABLE # 4 (CONTINUED)

                                   COMPANY NAME
       TREATMENT TECHNOLOGY
NONHALOGENATED VOLATILES
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION/SPAR
                            PEI ASSOCIATES, INC.
                            PEI ASSOCIATES, INC.
                            PEI ASSOCIATES, INC.
                            PEI ASSOCIATES, INC.
                            PETROLEUM TESTING SERVICE, INC.
                            PLASMA HOLDINGS, N.V.
                            PROCEDYNE CORPORATION
                            QUALTEC, INC.
                            QUALTEC, INC.
                            QUALTEC, INC.
                            RADIAN CORPORATION
                            RADIAN CORPORATION
                            RADIAN CORPORATION
                            RADIAN CORPORATION
                            RADIAN CORPORATION
                            RADIAN CORPORATION
                            RADIAN CORPORATION
                            RADIAN CORPORATION
                            RADIAN CORPORATION
                            RADIAN CORPORATION
                            RADIAN CORPORATION
                            RADIAN CORPORATION
                            RADIAN CORPORATION
                            RADIAN CORPORATION
                            REMEDIATION TECHNOLOGIES
                            REMEDIATION TECHNOLOGIES
                            REMEDIATION TECHNOLOGIES
                            REMEDIATION TECHNOLOGIES
                            REMEDIATION TECHNOLOGIES
                            REMEDIATION TECHNOLOGIES
                            REMEDIATION TECHNOLOGIES
                            REMEDIATION TECHNOLOGIES
                            REMEDIATION TECHNOLOGIES
                            REMEDIATION TECHNOLOGIES
                            REMEDIATION TECHNOLOGIES
BIODEGRADATION-NOS
BIODEGRADATION-SOLID PHASE
CHEMICAL OXIDATION
CHEMICAL TREATMENT
CHLORINAT ION
CRYSTALLIZATION
DEWATERING
IN SITU BIODEGRADATION
IN SITU BIODEGRADATION
IN SITU SOIL FLUSHING
IN SITU VACUUM & STEAM EXTRACT
INCINERATION
LOU TEMP THERMAL STRIPPING
OIL-WATER SEPARATION
STABILIZATION/SOLIDIFICATION
STRIPPING
THERMAL COMBUSTION
SOLVENT RECOVERY
AEROBIC BIOLOGICAL
FIXATION
LOW TEMP THERMAL DESORPTION
STABILIZATION/SOLIDIFICATION
IN SITU VACUUM & STEAM EXTRACT
SSP-PLASMA SLUDGE
PYROLYSIS
CHEMICAL PRECIPITATION
ION EXCHANGE
STABILIZATION/SOLIDIFICATION
ACTIVATED CARBON
ACTIVATED SLUDGE
ANAEROBIC BIOLOGICAL
CHEMICAL EXTRACTION
CHEMICAL OXIDATION
CHEMICAL PRECIPITATION
CHLORINATION
ELECTRODIALYSIS
INCINERATION
ION EXCHANGE
OZONATION
REVERSE OSMOSIS
STABILIZATION/SOLIDIFICATION
STRIPPING
ACTIVATED CARBON
ANAEROBIC BIOLOGICAL
BIODEGRADATION-SLURRY PHASE
BIODEGRADATION-SOLID PHASE
CHEMICAL EXTRACTION
IN SITU BIODEGRADATION
IN SITU SOIL FLUSHING
IN SITU VACUUM & STEAM EXTRACT
OZONATION
SOIL WASHING
STABILIZATION/SOLIDIFICATION
                                                 246

-------
CONTAMINANT GROUP
                                TABLE # 4 (CONTINUED)

                                   COMPANY NAME
       TREATMENT  TECHNOLOGY
NONHALOGENATED VOLATILES
                            REMEDIATION TECHNOLOGIES
                            REMEDIATION TECHNOLOGIES
                            RIVER OAK ASSOCIATES
                            RIVER OAK ASSOCIATES
                            RIVER OAK ASSOCIATES
                            RIVER OAK ASSOCIATES
                            RIVER OAK ASSOCIATES
                            RMC ENV & ANALYTICAL LABORATORIES
                            RMC ENV & ANALYTICAL LABORATORIES
                            RMC ENV & ANALYTICAL LABORATORIES
                            RMC ENV & ANALYTICAL LABORATORIES
                            RMC ENV & ANALYTICAL LABORATORIES
                            RMC ENV & ANALYTICAL LABORATORIES
                            RMC ENV & ANALYTICAL LABORATORIES
                            RMT, INC.
                            RMT, INC.
                            RMT, INC.
                            RMT, INC.
                            RMT, INC.
                            RMT, INC.
                            RMT, INC.
                            RMT, INC.
                            RMT, INC.
                            RMT, INC.
                            RMT, INC.
                            RMT, INC.
                            RMT, INC.
                            RMT, INC.
                            RMT, INC.
                            RMT, INC.
                            RMT, INC.
                            RMT, INC.
                            RMT, INC.
                            RMT, INC.
                            RNK ENVIRONMENTAL,  INC.
                            RNK ENVIRONMENTAL,  INC.
                            RNK ENVIRONMENTAL,  INC.
                            RNK ENVIRONMENTAL,  INC.
                            ROY F.  UESTON,  INC.
                            ROY F.  WESTON,  INC.
                            ROY F.  UESTON,  INC.
                            ROY F.  WESTON,  INC.
                            ROY F.  WESTON,  INC.
                            ROY F.  WESTON,  INC.
                            ROY F.  WESTON,  INC.
                            ROY F.  WESTON,  INC.
                            ROY F.  WESTON,  INC.
                            ROY F.  WESTON,  INC.
                            ROY F.  WESTON,  INC.
                            ROY F.  WESTON,  INC.
                            ROY F.  WESTON,  INC.
                            ROY F.  WESTON,  INC.
                            ROY F.  WESTON,  INC.
STRIPPING
THERMAL DESORPTION
AEROBIC BIOLOGICAL
ANAEROBIC BIOLOGICAL
CHEMICAL OXIDATION
CHEMICAL PRECIPITATION
CHEMICAL REDUCTION
CHEMICAL EXTRACTION
CHEMICAL TREATMENT
IN SITU VACUUM & STEAM EXTRACT
IN SITU VITRIFICATION
INCINERATION
SOIL WASHING
STABILIZATION/SOLIDIFICATION
ACTIVATED CARBON
ACTIVATED SLUDGE
AEROBIC BIOLOGICAL
ANAEROBIC BIOLOGICAL
BIODEGRADATION-NOS
CATALYSIS
CHEMICAL EXTRACTION
CHEMICAL OXIDATION
CHEMICAL TREATMENT
DISTILLATION
IN SITU SOIL FLUSHING
IN SITU VACUUM & STEAM EXTRACT
INCINERATION
LIQUID-LIQUID EXTRACTION
LOW TEMP THERMAL STRIPPING
SOIL WASHING
SOLVENT RECOVERY
STABILIZATION/SOLIDIFICATION
STRIPPING
WET AIR OXIDATION
ACTIVATED CARBON
BIODEGRADATION-NOS
CHLORINATION
SOIL WASHING
ACTIVATED CARBON
ACTIVATED SLUDGE
AEROBIC BIOLOGICAL
ANAEROBIC BIOLOGICAL
BIODEGRADATION-COMPOSTING
BIODEGRADATION-SLURRY PHASE
BIODEGRADATION-SOLID PHASE
CENTRIFUGATION
CHEMICAL EXTRACTION
CHEMICAL OXIDATION
CHEMICAL PRECIPITATION
CHEMICAL REDUCTION
CHEMICAL TREATMENT
CHLORINATION
COAGULATION/FLOCCULATION
                                                247

-------
CONTAMINANT GROUP
TABLE # 4 (CONTINUED)

   COMPANY NAME
                                                                            TREATMENT TECHNOLOGY
NONHALOGENATED VOLATILES
                            ROY F. WESTON,  INC.
                            ROY F. WESTON.  INC.
                            ROY F. WESTON,  INC.
                            ROY F. WESTON,  INC.
                            ROY F. WESTON,  INC.
                            ROY F. WESTON,  INC.
                            ROY F. WESTON,  INC.
                            ROY F. WESTON,  INC.
                            ROY F. WESTON,  INC.
                            ROY F. WESTON,  INC.
                            ROY F. WESTON,  INC.
                            ROY F. WESTON,  INC.
                            ROY F. WESTON,  INC.
                            ROY F. WESTON,  INC.
                            ROY F. WESTON,  INC.
                            ROY F. WESTON,  INC.
                            ROY F. WESTON,  INC.
                            ROY F. WESTON,  INC.
                            ROY F. WESTON,  INC.
                            S-CUBED
                            SYBRON CHEMICALS, INC.
                            SYBRON CHEMICALS, INC.
                            SYBRON CHEMICALS, INC.
                            SYBRON CHEMICALS, INC.
                            SYBRON CHEMICALS, INC.
                            SYBRON CHEMICALS, INC.
                            SYBRON CHEMICALS, INC.
                            SYBRON CHEMICALS, INC.
                            SYBRON CHEMICALS, INC.
                            SYBRON CHEMICALS, INC.
                            THORNE ENVIRONMENTAL, INC.
                            THORNE ENVIRONMENTAL, INC.
                            THORNE ENVIRONMENTAL, INC.
                            THORNE ENVIRONMENTAL, INC.
                            THORNE ENVIRONMENTAL, INC.
                            THORNE ENVIRONMENTAL, INC.
                            TREATEK, INC.
                            TREATEK, INC.
                            TREATEK, INC.
                            TREATEK, INC.
                            TREATEK, INC.
                            TREATEK, INC.
                            ULTROX INTERNATIONAL
                            ULTROX INTERNATIONAL
                            VAPEX
                            VAPEX
                            VERSAR INC.
                            VERSAR INC.
                            VERSAR INC.
                            VERSAR INC.
                            VERSAR INC.
                            VERSAR INC.
                            VERSAR INC.
                                     FILTRATION
                                     FILTRATION
                                     FLOTATION THICKENING
                                     GRAVITY THICKENING
                                     IN SITU BIODEGRADATION
                                     IN SITU RADIO FREQUENCY HTG
                                     IN SITU SOIL FLUSHING
                                     IN SITU VACUUM & STEAM EXTRACT
                                     INCINERATION
                                     ION EXCHANGE
                                     LOW TEMP THERMAL STRIPPING
                                     NEUTRALIZATION
                                     OZONATION
                                     PHYSICAL TREATMENT-NOS
                                     SEDIMENTATION
                                     SOIL WASHING
                                     STABILIZATION/SOLIDIFICATION
                                     STRIPPING
                                     THERMAL TREATMENT-NOS
                                     LIQUID-LIQUID EXTRACTION
                                     ACTIVATED SLUDGE
                                     ADSORPTION
                                     AEROBIC BIOLOGICAL
                                     BIODEGRADAT ION-SLURRY PHASE
                                     BIODEGRADATION-SOLID PHASE
                                     IN SITU BIODEGRADATION
                                     IN SITU SOIL FLUSHING
                                     IN SITU VACUUM & STEAM EXTRACT
                                     ION EXCHANGE
                                     SOIL WASHING
                                     BIODEGRADATION-SLURRY PHASE
                                     BIODEGRADATION-SOLID PHASE
                                     IN SITU BIODEGRADATION
                                     IN SITU SOIL FLUSHING
                                     UV/DEEP TREATMENT
                                     VAPOR EXTRACTION
                                     ADSORPTION
                                     AEROBIC BIOLOGICAL
                                     BIODEGRADATION-LAND FARMING
                                     CHEMICAL PRECIPITATION
                                     SOIL WASHING
                                     STRIPPING
                                     UV/OXIDATION
                                     UV/OXIDATION
                                     IN SITU VACUUM EXTRACTION
                                     IN SITU VACUUM EXTRACTION
                                     ACTIVATED SLUDGE
                                     ADSORPTION
                                     ANAEROBIC BIOLOGICAL
                                     CHEMICAL EXTRACTION
                                     CHEMICAL OXIDATION
                                     INCINERATION
                                     LIQUID-LIQUID EXTRACTION
                                                 248

-------
CONTAMINANT GROUP
                                TABLE # 4 (CONTINUED)

                                   COMPANY NAME
                                                TREATMENT TECHNOLOGY
NONHALOGENATED VOLATILES
NONVOLATILE METALS
VERSAR  INC.
VERSAR  INC.
VERSAR  INC.
VERSAR  INC.
VERSAR  INC.
WASTE STREAM  TECHNOLOGY,  INC.
WASTE STREAM  TECHNOLOGY,  INC.
WASTE STREAM  TECHNOLOGY,  INC.
WASTE STREAM  TECHNOLOGY,  INC.
WASTE STREAM  TECHNOLOGY,  INC.
WESTERN RESEARCH  INSTITUTE
WESTERN RESEARCH  INSTITUTE
WESTERN RESEARCH  INSTITUTE
WESTERN RESEARCH  INSTITUTE
WESTERN RESEARCH  INSTITUTE
WESTERN RESEARCH  INSTITUTE
WESTERN RESEARCH  INSTITUTE
WESTERN RESEARCH  INSTITUTE
WESTERN RESEARCH  INSTITUTE
ZENON ENVIRONMENTAL
ZENON ENVIRONMENTAL
ZENON ENVIRONMENTAL
ZENON ENVIRONMENTAL
ZENON ENVIRONMENTAL
ZENON ENVIRONMENTAL
ZENON ENVIRONMENTAL
ZIMPRO  PASSAVANT
ZIMPRO  PASSAVANT
ZIMPRO  PASSAVANT
ZIMPRO  PASSAVANT
ZIMPRO  PASSAVANT
ZIMPRO  PASSAVANT
ZIMPRO  PASSAVANT
ZIMPRO  PASSAVANT
ZIMPRO  PASSAVANT

AAA CSI
AAA CSI
AAA CSI
AAA CSI
AAA CSI
AAA CSI
AAA CSI
AAA CSI
AAA CSI
AAA CSI
AAA CSI
AAA CSI
AAA CSI
AAA CSI
AAA CSI
AAA CSI
AAA CSI
PACT
STABILIZATION/SOLIDIFICATION
STRIPPING
VITRIFICATION
WET AIR OXIDATION
AEROBIC BIOLOGICAL
BIODEGRADATION-COMPOSTING
BIODEGRADATION-SLURRY  PHASE
BIODEGRADATION-SOLID PHASE
IN SITU BIOOEGRADATION
BIODEGRADATION-SLURRY  PHASE
CHEMICAL OXIDATION
IN SITU BIOOEGRADATION
IN SITU SOIL FLUSHING
NEUTRALIZATION
REVERSE OSMOSIS
STABILIZATION/SOLIDIFICATION
STRIPPING
WET AIR OXIDATION
ACTIVATED CARBON
ACTIVATED SLUDGE
BIODEGRADATION-NOS
CHEMICAL PRECIPITATION
CHEMICAL REDUCTION
REVERSE OSMOSIS
STABILIZATION/SOLIDIFICATION
ACTIVATED SLUDGE
ADSORPTION
AEROBIC BIOLOGICAL
AEROBIC PACT
ANAEROBIC BIOLOGICAL
ANAEROBIC PACT
ROTATING BIOLOGICAL CONTACTORS
STRIPPING
WET AIR OXIDATION

ACTIVATED CARBON
ADSORPTION
CATALYSIS
CENTRIFUGATION
CHEMICAL EXTRACTION
CHEMICAL OXIDATION
CHEMICAL PRECIPITATION
CHEMICAL REDUCTION
CHEMICAL TREATMENT
CRYSTALLIZATION
FILTRATION
IN SITU VACUUM & STEAM EXTRACT
INCINERATION
INCINERATION
LIQUID-LIQUID EXTRACTION
LOW TEMP THERMAL STRIPPING
NEUTRALIZATION
                                                 249

-------
CONTAMINANT GROUP
                                TABLE # 4 (CONTINUED)

                                   COMPANY NAME
                                                                            TREATMENT  TECHNOLOGY
NONVOLATILE METALS
                            AAA CSI
                            AAA CSI
                            AAA CSI
                            AAA CSI
                            AAA CSI
                            AAA CSI
                            ANDCO ENVIRONMENTAL PROCESSES,  INC.
                            ANDCO ENVIRONMENTAL PROCESSES,  INC.
                            ANDCO ENVIRONMENTAL PROCESSES,  INC.
                            ANDCO ENVIRONMENTAL PROCESSES,  INC.
                            ANDCO ENVIRONMENTAL PROCESSES,  INC.
                            ANDCO ENVIRONMENTAL PROCESSES,  INC.
                            ANDCO ENVIRONMENTAL PROCESSES,  INC.
                            APPLIED REMEDIATION TECHNOLOGY, INC
                            APPLIED SURFACE TECHNOLOGY
                            APPLIED SURFACE TECHNOLOGY
                            APPLIED SURFACE TECHNOLOGY
                            APPLIED SURFACE TECHNOLOGY
                            APPLIED SURFACE TECHNOLOGY
                            APPLIED SURFACE TECHNOLOGY
                            APPLIED SURFACE TECHNOLOGY
                            APPLIED SURFACE TECHNOLOGY
                            APPLIED SURFACE TECHNOLOGY
                            APPLIED SURFACE TECHNOLOGY
                            APPLIED SURFACE TECHNOLOGY
                            APPLIED SURFACE TECHNOLOGY
                            APPLIED SURFACE TECHNOLOGY
                            APPLIED SURFACE TECHNOLOGY
                            APPLIED SURFACE TECHNOLOGY
                            APPLIED SURFACE TECHNOLOGY
                            APPLIED SURFACE TECHNOLOGY
                            APPLIED SURFACE TECHNOLOGY
                            APPLIED SURFACE TECHNOLOGY
                            APPLIED SURFACE TECHNOLOGY
                            APPLIED SURFACE TECHNOLOGY
                            APPLIED SURFACE TECHNOLOGY
                            APPLIED SURFACE TECHNOLOGY
                            AWC INCORPORATED
                            BIO-RECOVERY SYSTEMS, INC.
                            BIOTROL, INC.
                            BIOTROL, INC.
                            CHEMFIX ENVIRONMENTAL SERVICES
                            DETOX, INC.
                            DETOX, INC.
                            DETOX, INC.
                            DETOX, INC.
                            DETOX, INC.
                            DETOX, INC.
                            DETOX, INC.
                            DETOX, INC.
                            DETOX, INC.
                            DETOX, INC.
                            DETOX, INC.
SOLVENT RECOVERY
STABILIZATION/SOLIDIFICATION
STRIPPING
THERMAL PROCESSING
WET AIR OXIDATION
WET AIR OXIDATION
CHEMICAL PRECIPITATION
CLARIFICATION
ELECTROCHEMICAL
FILTRATION
ION EXCHANGE
STABILIZATION
STABILIZATION/SOLIDIFICATION
LOW ENERGY EXTRACTION PROCESS
ACTIVATED CARBON
ADSORPTION
CATALYSIS
CHEMICAL EXTRACTION
CHEMICAL OXIDATION
CHEMICAL PRECIPITATION
CHEMICAL TREATMENT
CHLORINATION
CRYSTALLIZATION
ELECTRODIALYSIS
ELECTROLYSIS
FLUID-BED STRIPPING
IN SITU SOIL FLUSHING
ION EXCHANGE
LOW TEMP THERMAL STRIPPING
OZONATION
REVERSE OSMOSIS
SOIL WASHING
SOLIDIFICATION
STABILIZATION
STRIPPING
THERMAL DECOMPOSITION
ULTRAFILTRATION
PHYSICAL SEPARATION
ION EXCHANGE
BI DEGRADATION-SLURRY PHASE
SOIL WASHING
FIXATION/STABILIZATION
ACTIVATED CARBON
ACTIVATED SLUDGE
ADSORPTION
ANAEROBIC BIOLOGICAL
BIODEGRADATION-COMPOST ING
BIODEGRADATION-SLURRY PHASE
BIODEGRADATION-SOLID PHASE
CHEMICAL EXTRACTION
CHEMICAL OXIDATION
CHEMICAL PRECIPITATION
CHEMICAL REDUCTION
                                                 250

-------
CONTAMINANT GROUP
                                TABLE # 4 (CONTINUED)

                                   COMPANY NAME
       TREATMENT TECHNOLOGY
NONVOLATILE METALS
                            DETOX, INC.
                            DETOX, INC.
                            DETOX, INC.
                            DETOX, INC.
                            DETOX, INC.
                            DETOX, INC.
                            DETOX, INC.
                            DETOX, INC.
                            DETOX, INC.
                            DETOX, INC.
                            DIVERSIFIED ENGINEERING,  INC.
                            DIVERSIFIED ENGINEERING,  INC.
                            DIVERSIFIED ENGINEERING,  INC.
                            DIVERSIFIED ENGINEERING,  INC.
                            DIVERSIFIED ENGINEERING,  INC.
                            DIVERSIFIED ENGINEERING,  INC.
                            DIVERSIFIED ENGINEERING,  INC.
                            DIVERSIFIED ENGINEERING,  INC.
                            DIVERSIFIED ENGINEERING,  INC.
                            DIVERSIFIED ENGINEERING,  INC.
                            DIVERSIFIED ENGINEERING,  INC.
                            DIVERSIFIED ENGINEERING,  INC.
                            DIVERSIFIED ENGINEERING,  INC.
                            DIVERSIFIED ENGINEERING,  INC.
                            DIVERSIFIED ENGINEERING,  INC.
                            DIVERSIFIED ENGINEERING,  INC.
                            DIVERSIFIED ENGINEERING,  INC.
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
CHEMICAL TREATMENT
CHLORINATION
IN SITU BIODEGRADATION
IN SITU SOIL FLUSHING
IN SITU VACUUM & STEAM EXTRACT
IN SITU VITRIFICATION
OZONATION
SOIL WASHING
SOLVENT RECOVERY
STRIPPING
ACTIVATED SLUDGE
AEROBIC BIOLOGICAL
ANAEROBIC BIOLOGICAL
CENTRIFUGATION
CHEMICAL OXIDATION
CHEMICAL PRECIPITATION
CHEMICAL REDUCTION
COAGULATION
FILTRATION
FLOCCULATION SETTLING
ION EXCHANGE
NEUTRALIZATION
ROTATING BIOLOGICAL CONTACTORS
SEDIMENTATION
TRICKLING FILTERS
ULTRAFILTRATION
WET AIR OXIDATION
ACTIVATED CARBON
ACTIVATED SLUDGE
ADSORPTION
AEROBIC BIOLOGICAL
ANAEROBIC BIOLOGICAL
BIODEGRADATION-NOS
CATALYSIS
CHEMICAL EXTRACTION
CHEMICAL OXIDATION
CHEMICAL PRECIPITATION
CHEMICAL REDUCTION
CHEMICAL TREATMENT
CHLORINATION
CRYSTALLIZATION
IN SITU SOIL FLUSHING
INCINERATION
ION EXCHANGE
LIQUID-LIQUID EXTRACTION
LOW TEMP THERMAL STRIPPING
NEUTRALIZATION
OZONATION
REVERSE OSMOSIS
SOLVENT RECOVERY
STABILIZATION
STRIPPING
VITRIFICATION
                                                 251

-------
CONTAMINANT GROUP
                                TABLE # 4 (CONTINUED)

                                   COMPANY NAME
       TREATMENT TECHNOLOGY
NONVOLATILE METALS
                            E M & C ENGINEERING ASSOCIATES
                            EARTH TECHNOLOGY CORP.
                            EARTH TECHNOLOGY CORP.
                            ENERGYSENVIRONMENTAL RESEARCH CORP.
                            ENRECO TECHNOLOGIES GROUP
                            ENRECO TECHNOLOGIES GROUP
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENVIRONMENTAL RESOURCE ASSOCIATES
                            ENVIRONMENTAL RESOURCE ASSOCIATES
                            ENVIRONMENTAL RESOURCE ASSOCIATES
                            ENVIRONMENTAL RESOURCE ASSOCIATES
                            ENVIRONMENTAL RESOURCE ASSOCIATES
                            ENVIRONMENTAL RESOURCE ASSOCIATES
                            ENVIRONMENTAL RESOURCE ASSOCIATES
                            ENVIRONMENTAL RESOURCE ASSOCIATES
                            ENVIRONMENTAL RESOURCE ASSOCIATES
                            ENVIRONMENTAL TECHNOLOGY SOUTHEAST
                            ENVIRONMENTAL TECHNOLOGY SOUTHEAST
                            ENVIRONMENTAL TECHNOLOGY SOUTHEAST
                            ENVIRONMENTAL TECHNOLOGY SOUTHEAST
                            ENVIRONMENTAL TECHNOLOGY SOUTHEAST
                            ENVIRONMENTAL TECHNOLOGY SOUTHEAST
                            ENVIRONMENTAL TECHNOLOGY SOUTHEAST
                            ENVIRONMENTAL TECHNOLOGY SOUTHEAST
                            ENVIRONMENTAL TECHNOLOGY SOUTHEAST
                            ENVIRONMENTAL TECHNOLOGY SOUTHEAST
                            ENVIRONMENTAL TECHNOLOGY SOUTHEAST
                            ENVIRONMENTAL TECHNOLOGY SOUTHEAST
                            ENVIRONMENTAL TECHNOLOGY SOUTHEAST
                            ENVIRONMENTAL TECHNOLOGY SOUTHEAST
                            ENVIRONMENTAL TECHNOLOGY SOUTHEAST
WET AIR OXIDATION
SOIL WASHING
STABILIZATION/SOLIDIFICATION
INCINERATION
CHEMICAL EXTRACTION
STABILIZATION/SOLIDIFICATION
ACTIVATED SLUDGE
ADSORPTION
B10DEGRADATION-NOS
BIODEGRADATION-NOS
CHEMICAL EXTRACTION
CHEMICAL OXIDATION
CHEMICAL PRECIPITATION
CHEMICAL REDUCTION
CHEMICAL TREATMENT
CHLORINATION
FILTRATION
IN SITU BIODEGRADATION
IN SITU SOIL FLUSHING
IN SITU VACUUM & STEAM EXTRACT
INCINERATION
ION EXCHANGE
LOW TEMP THERMAL STRIPPING
NEUTRALIZATION
SOIL WASHING
STABILIZATION/SOLIDIFICATION
STABILIZATION/SOLIDIFICATION
STRIPPING
VITRIFICATION
ACTIVATED CARBON
ACTIVATED SLUDGE
AEROBIC BIOLOGICAL
CHEMICAL OXIDATION
CHEMICAL PRECIPITATION
CHEMICAL REDUCTION
ION EXCHANGE
NEUTRALIZATION
STRIPPING
ACTIVATED CARBON
ACTIVATED SLUDGE
AEROBIC BIOLOGICAL
BIODEGRADATION-COMPOSTING
BIODEGRADATION-SLURRY PHASE
BIODEGRADATION-SOLID PHASE
CHEMICAL OXIDATION
CHEMICAL PRECIPITATION
CHEMICAL REDUCTION
CHLORINATION
IN SITU BIODEGRADATION
IN SITU VACUUM & STEAM EXTRACT
INCINERATION
ION EXCHANGE
NEUTRALIZATION
                                                 252

-------
CONTAMINANT GROUP
                                TABLE # 4 (CONTINUED)

                                   COMPANY NAME
       TREATMENT TECHNOLOGY
NONVOLATILE METALS
                            ENVIRONMENTAL TECHNOLOGY SOUTHEAST
                            ENVIRONMENTAL TECHNOLOGY SOUTHEAST
                            ENVIROSAFE TECHNOLOGIES, INC.
                            ENVIROTECH MID-ATLANTIC
                            ENVIROTECH MID-ATLANTIC
                            ENVIROTECH MID-ATLANTIC
                            ENVIROTECH MID-ATLANTIC
                            ENVIROTECH MID-ATLANTIC
                            ENVIROTECH MID-ATLANTIC
                            ENVIROTECH MID-ATLANTIC
                            ENVIROTECH MID-ATLANTIC
                            ENVIROTECH MID-ATLANTIC
                            ENVIROTECH MID-ATLANTIC
                            ENVIROTECH MID-ATLANTIC
                            ENVIROTECH MID-ATLANTIC
                            ENVIROTECH MID-ATLANTIC
                            FREEZE TECHNOLOGIES CORPORATION
                            GENERAL PHYSICS CORPORATION
                            GENERAL PHYSICS CORPORATION
                            GENERAL PHYSICS CORPORATION
                            GENERAL PHYSICS CORPORATION
                            GENERAL PHYSICS CORPORATION
                            GENERAL PHYSICS CORPORATION
                            GENERAL PHYSICS CORPORATION
                            GENERAL PHYSICS CORPORATION
                            GENERAL PHYSICS CORPORATION
                            GENERAL PHYSICS CORPORATION
                            GENERAL PHYSICS CORPORATION
                            GENERAL PHYSICS CORPORATION
                            HUNTER SERVICES, INC.
                            HUNTER SERVICES, INC.
                            HUNTER SERVICES, INC.
                            HUNTER SERVICES, INC.
                            HUNTER SERVICES, INC.
                            HUNTER SERVICES, INC.
                            HUNTER SERVICES, INC.
                            HUNTER SERVICES, INC.
                            HUNTER SERVICES, INC.
                            HUNTER SERVICES, INC.
                            HUNTER SERVICES, INC.
                            HUNTER SERVICES, INC.
                            IIT RESEARCH  INST
                            I IT RESEARCH  INST
                            I IT RESEARCH  INST
                            I IT RESEARCH  INST
                            INTERNATIONAL PROCESS RESEARCH  CORP
                            INTERNATIONAL PROCESS RESEARCH  CORP
                            INTERNATIONAL PROCESS RESEARCH  CORP
                            INTERNATIONAL PROCESS RESEARCH  CORP
                            INTERNATIONAL PROCESS RESEARCH  CORP
                            INTERNATIONAL PROCESS RESEARCH  CORP
                            INTERNATIONAL PROCESS RESEARCH  CORP
                            INTERNATIONAL PROCESS RESEARCH  CORP
SOIL WASHING
STRIPPING
STABILIZATION
ACTIVATED SLUDGE
ADSORPTION
AEROBIC BIOLOGICAL
ANAEROBIC BIOLOGICAL
BIODEGRADATION-SLURRY PHASE
BIODEGRADATION-SOLID PHASE
CHEMICAL EXTRACTION
CHEMICAL TREATMENT
IN SITU BIODEGRADATION
IN SITU SOIL FLUSHING
IN SITU VACUUM & STEAM EXTRACT
ION EXCHANGE
SOIL WASHING
FREEZE CRYSTALLIZATION
ACTIVATED CARBON
ACTIVATED SLUDGE
ADSORPTION
CATALYSIS
CHEMICAL PRECIPITATION
CHEMICAL TREATMENT
IN SITU BIODEGRADATION
ION EXCHANGE
NEUTRALIZATION
OZONATION
STABILIZATION/SOLIDIFICATION
STRIPPING
ACTIVATED SLUDGE
ADSORPTION
ADSORPTION
CHEMICAL OXIDATION
CHEMICAL OXIDATION
CHEMICAL PRECIPITATION
CHEMICAL PRECIPITATION
COAGULATION/FLOCCULATI ON
COAGULATION/F LOCCULAT ION
LOW TEMP THERMAL STRIPPING
STABILIZATION/SOLIDIFICATION
STRIPPING
CHEMICAL TREATMENT *
SOIL WASHING
SOIL WASHING
STABILIZATION/SOLIDIFICATION
ACTIVATED CARBON
ADSORPTION
AEROBIC BIOLOGICAL
ANAEROBIC BIOLOGICAL
BIODEGRADATION-NOS
CHEMICAL EXTRACTION
CHEMICAL OXIDATION
CHEMICAL PRECIPITATION
                                                 253

-------
CONTAMINANT GROUP
                                TABLE # 4 (CONTINUED)

                                   COMPANY NAME
       TREATMENT TECHNOLOGY
NONVOLATILE METALS
                            INTERNATIONAL PROCESS RESEARCH CORP
                            INTERNATIONAL PROCESS RESEARCH CORP
                            INTERNATIONAL PROCESS RESEARCH CORP
                            INTERNATIONAL PROCESS RESEARCH CORP
                            INTERNATIONAL PROCESS RESEARCH CORP
                            INTERNATIONAL PROCESS RESEARCH CORP
                            INTERNATIONAL PROCESS RESEARCH CORP
                            INTERNATIONAL PROCESS RESEARCH CORP
                            INTERNATIONAL PROCESS RESEARCH CORP
                            INTERNATIONAL PROCESS RESEARCH CORP
                            INTERNATIONAL PROCESS RESEARCH CORP
                            INTERNATIONAL PROCESS RESEARCH CORP
                            INTERNATIONAL PROCESS RESEARCH CORP
                            INTERNATIONAL PROCESS RESEARCH CORP
                            INTERNATIONAL PROCESS RESEARCH CORP
                            IT CORPORATION
                            IT CORPORATION
                            IT CORPORATION
                            IT CORPORATION
                            IT CORPORATION
                            IT CORPORATION
                            IT CORPORATION
                            IT CORPORATION
                            IT CORPORATION
                            IT CORPORATION
                            IT CORPORATION
                            IT CORPORATION
                            IT CORPORATION
                            JACOBS ENGINEERING GROUP, INC.
                            JACOBS ENGINEERING GROUP, INC.
                            JACOBS ENGINEERING GROUP, INC.
                            KEYSTONE ENVIRONMENTAL RESOURCES
                            KEYSTONE ENVIRONMENTAL RESOURCES
                            KEYSTONE ENVIRONMENTAL RESOURCES
                            KEYSTONE ENVIRONMENTAL RESOURCES
                            KEYSTONE ENVIRONMENTAL RESOURCES
                            KEYSTONE ENVIRONMENTAL RESOURCES
                            KEYSTONE ENVIRONMENTAL RESOURCES
                            KEYSTONE ENVIRONMENTAL RESOURCES
                            KIBER ASSOCIATES, INC.
                            KIBER ASSOCIATES, INC.
                            KIBER ASSOCIATES, INC.
                            KIBER ASSOCIATES, INC.
                            KIBER ASSOCIATES, INC.
                            KSE, INC.
                            KSE, INC.
                            KSE, INC.
                            KSE, INC.
                            KSE, INC.
                            KSE, INC.
                            KSE, INC.
                            KSE, INC.
                            KSE, INC.
CHEMICAL REDUCTION
CHEMICAL TREATMENT
CHLORINATION
CRYSTALLIZATION
IN SITU BIOOEGRADATION
INCINERATION
ION EXCHANGE
LIQUID-LIQUID EXTRACTION
NEUTRALIZATION
OZONATION
SOIL WASHING
SOLVENT RECOVERY
STABILIZATION/SOLIDIFICATION
STRIPPING
WET AIR OXIDATION
ACTIVATED CARBON
CATALYSIS
CHEMICAL EXTRACTION
CHEMICAL OXIDATION
CHEMICAL PRECIPITATION
CHEMICAL REDUCTION
INCINERATION
ION EXCHANGE
LOW TEMP THERMAL STRIPPING
REVERSE OSMOSIS
SOIL WASHING
STABILIZATION/SOLIDIFICATION
VITRIFICATION
CHEMICAL PRECIPITATION
PHYSICAL SEPARATION
STABILIZATION/SOLIDIFICATION
CHEMICAL OXIDATION
COAGULAT ION/FLOCCULATION
DISSOLVED AIR FLOTATION
FILTRATION/NEUTRAL IZ/PRECI PIT.
IN SITU BIODEGRADATION
ION EXCHANGE
REVERSE OSMOSIS
SOIL WASHING
ACTIVATED CARBON
CHEMICAL PRECIPITATION
STABILIZATION/SOLIDIFICATION
STABILIZATION/SOLIDIFICATION
STABILIZATION/SOLIDIFICATION
ACTIVATED CARBON
ADSORPTION
CATALYSIS
CHEMICAL EXTRACTION
LOW TEMP THERMAL STRIPPING
REVERSE OSMOSIS
SOLVENT RECOVERY
STRIPPING
ULTRAFILTRATION
                                                 254

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CONTAMINANT GROUP
TABLE # 4 (CONTINUED)

   COMPANY NAME
                                                                            TREATMENT TECHNOLOGY
NONVOLATILE METALS
                            MAECORP, INC.
                            MAECORP, INC.
                            MAECORP, INC.
                            MAECORP, INC.
                            MAECORP, INC.
                            MAECORP, INC.
                            MAECORP, INC.
                            MAECORP, INC.
                            MAECORP, INC.
                            MAECORP, INC.
                            MAECORP, INC.
                            MCNAMEE ADVANCED TECHNOLOGY,  INC.
                            MCNAMEE ADVANCED TECHNOLOGY,  INC.
                            MCNAMEE ADVANCED TECHNOLOGY,  INC.
                            MCNAMEE ADVANCED TECHNOLOGY,  INC.
                            MCNAMEE ADVANCED TECHNOLOGY,  INC.
                            MCNAMEE ADVANCED TECHNOLOGY,  INC.
                            MCNAMEE ADVANCED TECHNOLOGY,  INC.
                            MCNAMEE ADVANCED TECHNOLOGY,  INC.
                            MCNAMEE ADVANCED TECHNOLOGY,  INC.
                            MCNAMEE ADVANCED TECHNOLOGY,  INC.
                            MCNAMEE ADVANCED TECHNOLOGY,  INC.
                            MCNAMEE ADVANCED TECHNOLOGY,  INC.
                            O'BRIEN AND GERE ENGINEERS,  INC.
                            O'BRIEN AND GERE ENGINEERS,  INC.
                            O'BRIEN AND GERE ENGINEERS,  INC.
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION/SPAR
                            PEI  ASSOCIATES,  INC.
                            PEI  ASSOCIATES,  INC.
                            PEI  ASSOCIATES,  INC.
                                     ADSORPTION/ABSORPTION
                                     CHEMICAL  EXTRACTION
                                     CHEMICAL  PRECIPITATION
                                     CHEMICAL  TREATMENT
                                     CRYSTALLIZATION
                                     FREEZE CONCENTRATION
                                     ION EXCHANGE
                                     LIQUID-LIQUID EXTRACTION
                                     REVERSE OSMOSIS
                                     SOLVENT RECOVERY
                                     STABILIZATION/SOLIDIFICATION
                                     ACTIVATED CARBON
                                     ADSORPTION
                                     CHEMICAL  EXTRACTION
                                     CHEMICAL  PRECIPITATION
                                     CHEMICAL  REDUCTION
                                     CHEMICAL  TREATMENT
                                     COAGULAT ION/FLOCCULATION
                                     FREEZE CRYSTALLIZATION
                                     ION EXCHANGE
                                     PACT
                                     STABILIZATION
                                     STABILIZATION/SOLIDIFICATION
                                     ION EXCHANGE
                                     SOIL WASHING
                                     STABILIZATION/SOLIDIFICATION
                                     ACTIVATED CARBON
                                     ACTIVATED SLUDGE
                                     ADSORPTION
                                     AEROBIC BIOLOGICAL
                                     ANAEROBIC BIOLOGICAL
                                     BICOEGRADATION-NOS
                                     BIODEGRADATION-NOS
                                     BIODEGRADATION-SOLID PHASE
                                     CHEMICAL  EXTRACTION
                                     CHEMICAL  OXIDATION
                                     CHEMICAL  PRECIPITATION
                                     CHEMICAL  REDUCTION
                                     CHEMICAL  TREATMENT
                                     CHLORINATION
                                     CRYSTALLIZATION
                                     DEUATERING
                                     IN  SITU BIODEGRADATION
                                     IN  SITU SOIL  FLUSHING
                                     ION  EXCHANGE
                                     NEUTRALIZATION
                                     OIL-WATER SEPARATION
                                     SOIL WASHING
                                     STABILIZATION/SOLIDIFICATION
                                     SOLVENT RECOVERY
                                    AEROBIC BIOLOGICAL
                                     FIXATION
                                     FIXATION
                                                Z55

-------
CONTAMINANT GROUP
TABLE # 4 (CONTINUED)

   COMPANY NAME
                                                                            TREATMENT TECHNOLOGY
NONVOLATILE METALS
                            PEI ASSOCIATES,  INC.
                            PEI ASSOCIATES.  INC.
                            PEI ASSOCIATES,  INC.
                            PETROLEUM TESTING SERVICE,  INC.
                            PITTSBURGH MIN&ENV.TECH.,  INC.
                            PITTSBURGH MIN&ENV.TECH.,  INC.
                            PITTSBURGH MIN&ENV.TECH.,  INC.
                            PITTSBURGH MIN&ENV.TECH.,  INC.
                            PYROGENICS, INC.
                            PYROGENICS, INC.
                            PYROGENICS, INC.
                            PYROGENICS, INC.
                            QUALTEC, INC.
                            QUALTEC, INC.
                            QUALTEC, INC.
                            RADIAN CORPORATION
                            RADIAN CORPORATION
                            RADIAN CORPORATION
                            RADIAN CORPORATION
                            RADIAN CORPORATION
                            RADIAN CORPORATION
                            RADIAN CORPORATION
                            RADIAN CORPORATION
                            RADIAN CORPORATION
                            RADIAN CORPORATION
                            RADIAN CORPORATION
                            REMEDIATION TECHNOLOGIES
                            REMEDIATION TECHNOLOGIES
                            REMEDIATION TECHNOLOGIES
                            RIVER OAK ASSOCIATES
                            RIVER OAK ASSOCIATES
                            RIVER OAK ASSOCIATES
                            RIVER OAK ASSOCIATES
                            RIVER OAK ASSOCIATES
                            RIVER OAK ASSOCIATES
                            RIVER OAK ASSOCIATES
                            RIVER OAK ASSOCIATES
                            RIVER OAK ASSOCIATES
                            RIVER OAK ASSOCIATES
                            RMC ENV & ANALYTICAL  LABORATORIES
                            RMC ENV & ANALYTICAL  LABORATORIES
                            RMC ENV & ANALYTICAL  LABORATORIES
                            RMC ENV & ANALYTICAL  LABORATORIES
                            RMC ENV & ANALYTICAL  LABORATORIES
                            RMC ENV & ANALYTICAL  LABORATORIES
                            RMC ENV & ANALYTICAL  LABORATORIES
                            RMT,  INC.
                            RMT,  INC.
                            RMT,  INC.
                            RMT,  INC.
                            RMT,  INC.
                            RMT,  INC.
                            RMT,  INC.
                                     SOIL  WASHING
                                     STABILIZATION/SOLIDIFICATION
                                     STABILIZATION/SOLIDIFICATION
                                     IN SITU VACUUM & STEAM EXTRACT
                                     CHEMICAL EXTRACTION
                                     CHEMICAL PRECIPITATION
                                     PHYSICAL SEPARATION
                                     SOIL  WASHING
                                     DEUATERING
                                     STABILIZATION/SOLIDIFICATION
                                     THERMAL DESTRUCTION
                                     VITRIFICATION
                                     CHEMICAL PRECIPITATION
                                     ION EXCHANGE
                                     STABILIZATION/SOLIDIFICATION
                                     ACTIVATED CARBON
                                     CHEMICAL EXTRACTION
                                     CHEMICAL OXIDATION
                                     CHEMICAL PRECIPITATION
                                     CHLORI NAT ION
                                     ELECTRODIALYSIS
                                     ION EXCHANGE
                                     OZONATION
                                     REVERSE OSMOSIS
                                     STABILIZATION/SOLIDIFICATION
                                     STRIPPING
                                     CHEMICAL EXTRACTION
                                     IN SITU BIODEGRADATION
                                     SOIL  WASHING
                                     ACTIVATED CARBON
                                     ADSORPTION
                                     CHLORINATION
                                     CRYSTALLIZATION
                                     ELECTRODIALYSIS
                                     ION EXCHANGE
                                     NEUTRALIZATION
                                     NEUTRALIZATION
                                     OZONATION
                                     STRIPPING
                                     CHEMICAL EXTRACTION
                                     CHEMICAL TREATMENT
                                     IN SITU VACUUM & STEAM EXTRACT
                                     IN SITU VITRIFICATION
                                     INCINERATION
                                     SOIL  WASHING
                                     STABILIZATION/SOLIDIFICATION
                                     ACTIVATED SLUDGE
                                     ADSORPTION
                                     CHEMICAL EXTRACTION
                                     CHEMICAL OXIDATION
                                     CHEMICAL PRECIPITATION
                                     CHEMICAL REDUCTION
                                     CHEMICAL TREATMENT
                                                256

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CONTAMINANT GROUP
                                TABLE # 4 (CONTINUED)

                                   COMPANY NAME
       TREATMENT TECHNOLOGY
NONVOLATILE METALS
                            RMT. INC.
                            RMT, INC.
                            RMT, INC.
                            RMT, INC.
                            RMT, INC.
                            RMT, INC.
                            RMT, INC.
                            RNK ENVIRONMENTAL, INC.
                            RNK ENVIRONMENTAL, INC.
                            RNK ENVIRONMENTAL, INC.
                            RNK ENVIRONMENTAL, INC.
                            RNK ENVIRONMENTAL, INC.
                            RNK ENVIRONMENTAL, INC.
                            RNK ENVIRONMENTAL, INC.
                            RNK ENVIRONMENTAL, INC.
                            RNK ENVIRONMENTAL, INC.
                            ROY F. UESTON, INC.
                            ROY F. WESTON, INC.
                            ROY F. UESTON, INC.
                            ROY F. UESTON, INC.
                            ROY F. UESTON, INC.
                            ROY F. UESTON, INC.
                            ROY F. UESTON, INC.
                            ROY F. UESTON, INC.
                            ROY f. UESTON, INC.
                            ROY F. UESTON, INC.
                            ROY F. WESTON, INC.
                            ROY F. UESTON, INC.
                            ROY F. UESTON, INC.
                            ROY F. UESTON, INC.
                            ROY F. UESTON, INC.
                            ROY F. UESTON, INC.
                            ROY F. UESTON, INC.
                            ROY F. UESTON, INC.
                            ROY F. UESTON, INC.
                            ROY F. UESTON, INC.
                            ROY F. UESTON, INC.
                            ROY F. UESTON, INC.
                            ROY F. UESTON, INC.
                            ROY F. WESTON, INC.
                            ROY F. UESTON, INC.
                            SYBRON CHEMICALS,  INC.
                            SYBRON CHEMICALS,  INC.
                            SYBRON CHEMICALS,  INC.
                            SYBRON CHEMICALS,  INC.
                            SYBRON CHEMICALS,  INC.
                            SYBRON CHEMICALS,  INC.
                            SYBRON CHEMICALS,  INC.
                            SYBRON CHEMICALS,  INC.
                            SYBRON CHEMICALS,  INC.
                            SYBRON CHEMICALS,  INC.
                            THORNE ENVIRONMENTAL,  INC.
                            TREATEK, INC.
ELECTRODIALYSIS
EVAPORATION
IN SITU SOIL FLUSHING
ION EXCHANGE
REVERSE OSMOSIS
SOIL UASHING
STABILIZATION/SOLIDIFICATION
ACTIVATED SLUDGE
AEROBIC BIOLOGICAL
ANAEROBIC BIOLOGICAL
CHEMICAL OXIDATION
CHEMICAL PRECIPITATION
CHEMICAL REDUCTION
ION EXCHANGE
REVERSE OSMOSIS
STABILIZATION/SOLIDIFICATION
ACTIVATED CARBON
CENTRIFUGATION
CHEMICAL EXTRACTION
CHEMICAL OXIDATION
CHEMICAL REDUCTION
CHEMICAL TREATMENT
CHLORINATION
COAGULATION/F LOCCULATION
FILTRATION
FILTRATION
FLOTATION THICKENING
GRAVITY  THICKENING
IN  SITU  RADIO  FREQUENCY HTG
IN  SITU  SOIL FLUSHING
INCINERATION
ION EXCHANGE
LOU TEMP THERMAL  STRIPPING
NEUTRALIZATION
OZONATION
PHYSICAL TREATMENT-NOS
SEDIMENTATION
SOIL  UASHING
STABILIZATION/SOLIDIFICATION
STRIPPING
THERMAL  TREATMENT-NOS
ACTIVATED SLUDGE
ADSORPTION
AEROBIC  BIOLOGICAL
BIODEGRADATION-SLURRY PHASE
BIODEGRADATION-SOLID  PHASE
IN  SITU  BIODEGRADATION
IN  SITU  SOIL FLUSHING
IN  SITU  VACUUM &  STEAM  EXTRACT
ION EXCHANGE
SOIL  UASHING
STABILIZATION/SOLIDIFICATION
ADSORPTION
                                                  257

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CONTAMINANT GROUP
                                TABLE # 4 (CONTINUED)

                                   COMPANY NAME
                                                TREATMENT  TECHNOLOGY
NONVOLATILE METALS
                            TREATEK, INC.
                            TREATEK. INC.
                            TREATEK, INC.
                            TREATEK, INC.
                            VERSAR INC.
                            VERSAR INC.
                            VERSAR INC.
                            VERSAR INC.
                            VERSAR INC.
                            VERSAR INC.
                            VERSAR INC.
                            WASTE STREAM TECHNOLOGY, INC.
                            WESTERN RESEARCH INSTITUTE
                            WESTERN RESEARCH INSTITUTE
                            WESTERN RESEARCH INSTITUTE
                            WESTERN RESEARCH INSTITUTE
                            WESTERN RESEARCH INSTITUTE
                            WESTERN RESEARCH INSTITUTE
                            WESTERN RESEARCH INSTITUTE
                            WESTERN RESEARCH INSTITUTE
                            WESTERN RESEARCH INSTITUTE
                            WESTERN RESEARCH INSTITUTE
                            WESTERN RESEARCH INSTITUTE
                            WESTERN RESEARCH INSTITUTE
                            WESTERN RESEARCH INSTITUTE
                            WESTERN RESEARCH INSTITUTE
                            WESTERN RESEARCH INSTITUTE
                            WESTINGHOUSE SCIENCE & TECHNOLOGY
                            ZENON ENVIRONMENTAL
                            ZENON ENVIRONMENTAL
                            ZIMPRO PASSAVANT
                            ZIMPRO PASSAVANT
                            ZIMPRO PASSAVANT
                                         AEROBIC  BIOLOGICAL
                                         CHEMICAL PRECIPITATION
                                         SOIL  WASHING
                                         STRIPPING
                                         CHEMICAL EXTRACTION
                                         CHEMICAL OXIDATION
                                         CHEMICAL PRECIPITATION
                                         ION EXCHANGE
                                         REVERSE  OSMOSIS
                                         STABILIZATION/SOLIDIFICATION
                                         VITRIFICATION
                                         CHEMICAL TREATMENT
                                         ACTIVATED CARBON
                                         AEROBIC  BIOLOGICAL
                                         ANAEROBIC BIOLOGICAL
                                         BIODEGRADATION-SOLID PHASE
                                         CHEMICAL OXIDATION
                                         CHEMICAL PRECIPITATION
                                         CHEMICAL REDUCTION
                                         DEWATERING
                                         E LECTROCOAGULAT ION
                                         ION  EXCHANGE
                                         LIQUID-SOLID  SEPARATION
                                         NEUTRALIZATION
                                         REVERSE  OSMOSIS
                                         SOIL  WASHING
                                         STRIPPING
                                         SOIL  WASHING
                                         BIODEGRADATION-NOS
                                         STABILIZATION/SOLIDIFICATION
                                         CHEMICAL PRECIPITATION
                                         COAGULATION/FLOCCULATION
                                         FILTRATION
ORGANIC CORROSIVES
AAA CSI
AAA CSI
AAA CSI
AAA CSI
AAA CSI
AAA CSI
AAA CSI
AAA CSI
AAA CSI
AAA CSI
AAA CSI
AAA CSI
AAA CSI
AAA CSI
AAA CSI
AAA CSI
AAA CSI
AAA CSI
AAA CSI
ACTIVATED CARBON
ADSORPTION
CATALYSIS
CENTRIFUGATION
CHEMICAL EXTRACTION
CHEMICAL OXIDATION
CHEMICAL PRECIPITATION
CHEMICAL REDUCTION
CHEMICAL TREATMENT
CRYSTALLIZATION
FILTRATION
IN SITU VACUUM & STEAM EXTRACT
INCINERATION
INCINERATION
LIQUID-LIQUID EXTRACTION
LOW TEMP THERMAL STRIPPING
NEUTRALIZATION
SOLVENT RECOVERY
STABILIZATION/SOLIDIFICATION
                                                 258

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CONTAMINANT GROUP
                                TABLE # 4 (CONTINUED)

                                   COMPANY NAME
       TREATMENT TECHNOLOGY
ORGANIC CORROSIVES
                            AM CSI
                            AAA CSI
                            AM CSI
                            AM CSI
                            BIOSCIENCE MANAGEMENT, INC.
                            BIOSCIENCE MANAGEMENT, INC.
                            BIOSCIENCE MANAGEMENT, INC.
                            BIOSCIENCE MANAGEMENT, INC.
                            BIOSCIENCE MANAGEMENT, INC.
                            BIOSCIENCE MANAGEMENT, INC.
                            BIOSCIENCE MANAGEMENT, INC.
                            DETOX, INC.
                            DETOX, INC.
                            DETOX, INC.
                            DETOX, INC.
                            DETOX, INC.
                            DETOX, INC.
                            DETOX, INC.
                            DETOX, INC.
                            DETOX, INC.
                            DETOX, INC.
                            DETOX, INC.
                            DETOX, INC.
                            DETOX, INC.
                            DETOX, INC.
                            DETOX, INC.
                            DETOX, INC.
                            DETOX, INC.
                            DETOX, INC.
                            DETOX, INC.
                            DETOX, INC.
                            DETOX, INC.
                            DIVERSIFIED ENGINEERING, INC.
                            DIVERSIFIED ENGINEERING, INC.
                            DIVERSIFIED ENGINEERING, INC.
                            DIVERSIFIED ENGINEERING, INC.
                            DIVERSIFIED ENGINEERING, INC.
                            DIVERSIFIED ENGINEERING, INC.
                            DIVERSIFIED ENGINEERING, INC.
                            DIVERSIFIED ENGINEERING, INC.
                            DIVERSIFIED ENGINEERING, INC.
                            EARTH  TECHNOLOGY CORP.
                            EARTH  TECHNOLOGY CORP.
                            ENRECO TECHNOLOGIES GROUP
                            ENRECO TECHNOLOGIES GROUP
                            FREEZE TECHNOLOGIES CORPORATION
                            GENERAL PHYSICS CORPORATION
                            GENERAL PHYSICS CORPORATION
                            GENERAL PHYSICS CORPORATION
                            GENERAL PHYSICS CORPORATION
                            GENERAL PHYSICS CORPORATION
                            GENERAL PHYSICS CORPORATION
                            GENERAL PHYSICS CORPORATION
STRIPPING
THERMAL PROCESSING
WET AIR OXIDATION
WET AIR OXIDATION
AEROBIC BIOLOGICAL
BIODEGRADATION-COMPOST ING
BIODEGRADATION-SLURRY PHASE
BIODEGRADATION-SOLID PHASE
IN SITU BIODEGRADATION
NEUTRALIZATION
STRIPPING
ACTIVATED CARBON
ACTIVATED SLUDGE
ADSORPTION
ANAEROBIC BIOLOGICAL
BICOEGRADATION-COMPOSTING
BIODEGRADATION-SLURRY PHASE
81ODEGRADATION-SOLID PHASE
CHEMICAL EXTRACTION
CHEMICAL OXIDATION
CHEMICAL PRECIPITATION
CHEMICAL REDUCTION
CHEMICAL TREATMENT
CHLORINATION
IN SITU BIODEGRADATI ON
IN SITU SOIL  FLUSHING
IN SITU VACUUM & STEAM EXTRACT
IN SITU VITRIFICATION
OZONATION
SOIL WASHING
SOLVENT RECOVERY
STRIPPING
CENTRIFUGATION
CHEMICAL OXIDATION
CHEMICAL PRECIPITATION
CHEMICAL REDUCTION
COAGULATION
FILTRATION
INCINERATION
LIQUID-LIQUID EXTRACTION
NEUTRALIZATION
SOIL WASHING
STABILIZATION/SOLIDIFICATION
CHEMICAL EXTRACTION
STABILIZATION/SOLIDIFICATION
FREEZE CRYSTALLIZATION
ACTIVATED CARBON
ACTIVATED SLUDGE
AEROBIC BIOLOGICAL
ANAEROBIC BIOLOGICAL
CATALYSIS
CHEMICAL OXIDATION
CHEMICAL PRECIPITATION
                                                 259

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CONTAMINANT GROUP
                                TABLE # 4 (CONTINUED)

                                   COMPANY NAME
                                                                            TREATMENT TECHNOLOGY
ORGANIC CORROSIVES
                            GENERAL PHYSICS CORPORATION
                            GENERAL PHYSICS CORPORATION
                            GENERAL PHYSICS CORPORATION
                            GENERAL PHYSICS CORPORATION
                            GENERAL PHYSICS CORPORATION
                            GENERAL PHYSICS CORPORATION
                            GENERAL PHYSICS CORPORATION
                            HUNTER SERVICES, INC.
                            HUNTER SERVICES, INC.
                            HUNTER SERVICES, INC.
                            HUNTER SERVICES, INC.
                            HUNTER SERVICES, INC.
                            HUMTER SERVICES, INC.
                            HUNTER SERVICES, INC.
                            HUNTER SERVICES, INC.
                            HUNTER SERVICES, INC.
                            HUNTER SERVICES, INC.
                            HUNTER SERVICES, INC.
                            I IT RESEARCH INST
                            I IT RESEARCH INST
                            INTERNATIONAL PROCESS RESEARCH CORP
                            INTERNATIONAL PROCESS RESEARCH CORP
                            INTERNATIONAL PROCESS RESEARCH CORP
                            INTERNATIONAL PROCESS RESEARCH CORP
                            INTERNATIONAL PROCESS RESEARCH CORP
                            INTERNATIONAL PROCESS RESEARCH CORP
                            INTERNATIONAL PROCESS RESEARCH CORP
                            INTERNATIONAL PROCESS RESEARCH CORP
                            INTERNATIONAL PROCESS RESEARCH CORP
                            INTERNATIONAL PROCESS RESEARCH CORP
                            INTERNATIONAL PROCESS RESEARCH CORP
                            INTERNATIONAL PROCESS RESEARCH CORP
                            INTERNATIONAL PROCESS RESEARCH CORP
                            INTERNATIONAL PROCESS RESEARCH CORP
                            INTERNATIONAL PROCESS RESEARCH CORP
                            INTERNATIONAL PROCESS RESEARCH CORP
                            INTERNATIONAL PROCESS RESEARCH CORP
                            INTERNATIONAL PROCESS RESEARCH CORP
                            INTERNATIONAL PROCESS RESEARCH CORP
                            INTERNATIONAL PROCESS RESEARCH CORP
                            INTERNATIONAL PROCESS RESEARCH CORP
                            INTERNATIONAL PROCESS RESEARCH CORP
                            IT CORPORATION
                            JACOBS ENGINEERING GROUP, INC.
                            JACOBS ENGINEERING GROUP, INC.
                            KIBER ASSOCIATES, INC.
                            KIBER ASSOCIATES, INC.
                            MCNAMEE ADVANCED TECHNOLOGY, INC.
                            MCNAMEE ADVANCED TECHNOLOGY, INC.
                            MCNAMEE ADVANCED TECHNOLOGY, INC.
                            MCNAMEE ADVANCED TECHNOLOGY, INC.
                            MCNAMEE ADVANCED TECHNOLOGY, INC.
                            MCNAMEE ADVANCED TECHNOLOGY, INC.
CHEMICAL TREATMENT
ION EXCHANGE
LIQUID-LIQUID EXTRACTION
NEUTRALIZATION
OZONATION
STABILIZATION/SOLIDIFICATION
STRIPPING
ADSORPTION
ADSORPTION
CHEMICAL OXIDATION
CHEMICAL OXIDATION
CHEMICAL PRECIPITATION
CHEMICAL PRECIPITATION
COAGULATION/FLOCCULATION
COAGULATION/FLOCCULATION
LOW TEMP THERMAL STRIPPING
OZONATION
STRIPPING
OZONATION
STABILIZATION/SOLIDIFICATION
ACTIVATED CARBON
ADSORPTION
AEROBIC BIOLOGICAL
ANAEROBIC BIOLOGICAL
BIODEGRADATION-NOS
CHEMICAL EXTRACTION
CHEMICAL OXIDATION
CHEMICAL PRECIPITATION
CHEMICAL REDUCTION
CHEMICAL TREATMENT
CHLORINATION
CRYSTALLIZATION
IN SITU BIODEGRADATION
INCINERATION
ION EXCHANGE
LIQUID-LIQUID EXTRACTION
NEUTRALIZATION
SOIL WASHING
SOLVENT RECOVERY
STABILIZATION/SOLIDIFICATION
STRIPPING
WET AIR OXIDATION
NEUTRALIZATION
PHYSICAL SEPARATION
STABILIZATION/SOLIDIFICATION
ACTIVATED CARBON
CHEMICAL PRECIPITATION
CHEMICAL TREATMENT
INCINERATION
LIQUID-LIQUID EXTRACTION
NEUTRALIZATION
STABILIZATION/SOLIDIFICATION
THERMAL COMBUSTION
                                                 260

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CONTAMINANT GROUP
                                TABLE # 4 (CONTINUED)

                                   COMPANY NAME
       TREATMENT TECHNOLOGY
ORGANIC CORROSIVES
                            MIDWEST RESEARCH INSTITUTE
                            OGDEN ENVIRONMENTAL SERVICES,  INC.
                            RADIAN CORPORATION
                            RADIAN CORPORATION
                            RADIAN CORPORATION
                            RADIAN CORPORATION
                            RADIAN CORPORATION
                            RADIAN CORPORATION
                            RADIAN CORPORATION
                            RADIAN CORPORATION
                            RADIAN CORPORATION
                            RADIAN CORPORATION
                            RADIAN CORPORATION
                            RADIAN CORPORATION
                            RADIAN CORPORATION
                            REMEDIATION TECHNOLOGIES
                            REMEDIATION TECHNOLOGIES
                            REMEDIATION TECHNOLOGIES
                            REMEDIATION TECHNOLOGIES
                            REMEDIATION TECHNOLOGIES
                            REMEDIATION TECHNOLOGIES
                            RMC ENV & ANALYTICAL LABORATORIES
                            RMC ENV & ANALYTICAL LABORATORIES
                            RMC ENV & ANALYTICAL LABORATORIES
                            RMC ENV & ANALYTICAL LABORATORIES
                            RMC ENV & ANALYTICAL LABORATORIES
                            RMC ENV & ANALYTICAL LABORATORIES
                            RMC ENV & ANALYTICAL LABORATORIES
                            RMT,  INC.
                            RMT,  INC.
                            RMT,  INC.
                            RMT,  INC.
                            RMT,  INC.
                            RMT,  INC.
                            RMT,  INC.
                            RMT,  INC.
                            RMT,  INC.
                            RMT,  INC.
                            RMT,  INC.
                            RMT,  INC.
                            RNK ENVIRONMENTAL, INC.
                            RNK ENVIRONMENTAL, INC.
                            RNK ENVIRONMENTAL, INC.
                            RNK ENVIRONMENTAL, INC.
                            RNK ENVIRONMENTAL, INC.
                            RNK ENVIRONMENTAL, INC.
                            RNK ENVIRONMENTAL, INC.
                            RNK ENVIRONMENTAL, INC.
                            ROY F. WESTON, INC.
                            ROY F. UESTON, INC.
                            ROY f. UESTON, INC.
                            ROY F. WESTON, INC.
                            ROY F. WESTON, INC.
BIODEGRADATION-NOS
INCINERATION
ACTIVATED CARBON
ACTIVATED SLUDGE
ANAEROBIC BIOLOGICAL
CHEMICAL EXTRACTION
CHEMICAL OXIDATION
CHEMICAL PRECIPITATION
CHLORINATION
ELECTRODIALYSIS
ION EXCHANGE
OZONATION
REVERSE OSMOSIS
STABILIZATION/SOLIDIFICATION
STRIPPING
ACTIVATED CARBON
ANAEROBIC BIOLOGICAL
BIODEGRADATION-SLURRY PHASE
BIOOEGRADATION-SOLID PHASE
STABILIZATION/SOLIDIFICATION
STRIPPING
CHEMICAL EXTRACTION
CHEMICAL TREATMENT
IN SITU VACUUM & STEAM EXTRACT
IN SITU VITRIFICATION
INCINERATION
SOIL WASHING
STABILIZATION/SOLIDIFICATION
ACTIVATED SLUDGE
BIODEGRADATION-NOS
CHEMICAL TREATMENT
DISTILLATION
EVAPORATION
IN SITU SOIL  FLUSHING
INCINERATION
ION EXCHANGE
NEUTRALIZATION
SOIL WASHING
STABILIZATION/SOLIDIFICATION
WET AIR OXIDATION
ACTIVATED CARBON
BIODEGRADATION-COMPOSTING
BIODEGRADATION-NOS
CHEMICAL OXIDATION
CHEMICAL REDUCTION
CHLORINATION
NEUTRALIZATION
SOIL WASHING
ACTIVATED CARBON
CENTRIFUGATION
CHEMICAL EXTRACTION
CHEMICAL OXIDATION
CHEMICAL PRECIPITATION
                                                 261

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CONTAMINANT GROUP
TABLE # 4 (CONTINUED)

   COMPANY NAME
                                                                            TREATMENT TECHNOLOGY
ORGANIC CORROSIVES
                            ROY F. WESTON, INC.
                            ROY F. WESTON, INC.
                            ROY F. WESTON, INC.
                            ROY F. WESTON, INC.
                            ROY F. WESTON, INC.
                            ROY F. WESTON, INC.
                            ROY F. WESTON, INC.
                            ROY F. WESTON, INC.
                            ROY F. WESTON, INC.
                            ROY F. WESTON, INC.
                            ROY F. WESTON, INC.
                            ROY F. WESTON, INC.
                            ROY F. WESTON, INC.
                            ROY F. WESTON, INC.
                            ROY F. WESTON, INC.
                            ROY F. WESTON, INC.
                            VERSAR INC.
                            VERSAR INC.
                            VERSAR INC.
                            WESTINGHOUSE SCIENCE & TECHNOLOGY
                            ZENON ENVIRONMENTAL
                            ZENON ENVIRONMENTAL
                            ZENON ENVIRONMENTAL
                            ZENON ENVIRONMENTAL
                            ZENON ENVIRONMENTAL
                            ZENON ENVIRONMENTAL
                            ZIMPRO PASSAVANT
                                     CHEMICAL REDUCTION
                                     CHEMICAL TREATMENT
                                     CHLORINATION
                                     COAGULAT ION/F LOCCULATI ON
                                     FILTRATION
                                     FILTRATION
                                     FLOTAT IOH THICKENING
                                     GRAVITY THICKENING
                                     IN SITU SOIL FLUSHING
                                     ION EXCHANGE
                                     NEUTRALIZATION
                                     OZONATION
                                     SEDIMENTATION
                                     SOIL WASHING
                                     STABILIZATION/SOLIDIFICATION
                                     STRIPPING
                                     NEUTRALIZATION
                                     STABILIZATION/SOLIDIFICATION
                                     VITRIFICATION
                                     SOIL WASHING
                                     ACTIVATED CARBON
                                     ACTIVATED SLUDGE
                                     BIODEGRADATION-NOS
                                     CHEMICAL PRECIPITATION
                                     REVERSE OSMOSIS
                                     STABILIZATION/SOLIDIFICATION
                                     WET AIR OXIDATION
ORGANIC CYANIDES
                            APPLIED SURFACE TECHNOLOGY
                            APPLIED SURFACE TECHNOLOGY
                            APPLIED SURFACE TECHNOLOGY
                            APPLIED SURFACE TECHNOLOGY
                            APPLIED SURFACE TECHNOLOGY
                            APPLIED SURFACE TECHNOLOGY
                            APPLIED SURFACE TECHNOLOGY
                            APPLIED SURFACE TECHNOLOGY
                            APPLIED SURFACE TECHNOLOGY
                            APPLIED SURFACE TECHNOLOGY
                            APPLIED SURFACE TECHNOLOGY
                            APPLIED SURFACE TECHNOLOGY
                            APPLIED SURFACE TECHNOLOGY
                            APPLIED SURFACE TECHNOLOGY
                            APPLIED SURFACE TECHNOLOGY
                            APPLIED SURFACE TECHNOLOGY
                            APPLIED SURFACE TECHNOLOGY
                            APPLIED SURFACE TECHNOLOGY
                            APPLIED SURFACE TECHNOLOGY
                            APPLIED SURFACE TECHNOLOGY
                            APPLIED SURFACE TECHNOLOGY
                            APPLIED SURFACE TECHNOLOGY
                            APPLIED SURFACE TECHNOLOGY
                            BIOSCIENCE MANAGEMENT, INC.
                            BIOSCIENCE MANAGEMENT, INC.
                                     ACTIVATED CARBON
                                     ADSORPTION
                                     CATALYSIS
                                     CHEMICAL EXTRACTION
                                     CHEMICAL OXIDATION
                                     CHEMICAL PRECIPITATION
                                     CHEMICAL TREATMENT
                                     CHLORINATION
                                     CRYSTALLIZATION
                                     ELECTRODIALYSIS
                                     ELECTROLYSIS
                                     FLUID-BED STRIPPING
                                     IN SITU SOIL FLUSHING
                                     ION EXCHANGE
                                     LOW TEMP THERMAL STRIPPING
                                     OZONATION
                                     REVERSE OSMOSIS
                                     SOIL WASHING
                                     SOLIDIFICATION
                                     STABILIZATION
                                     STRIPPING
                                     THERMAL DECOMPOSITION
                                     ULTRAFILTRATION
                                     AEROBIC BIOLOGICAL
                                     BIODEGRADATION-COMPOST ING
                                                 262

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CONTAMINANT GROUP
                                TABLE # 4 (CONTINUED)

                                   COMPANY NAME
       TREATMENT TECHNOLOGY
ORGANIC CYANIDES
                            BIOSCIENCE MANAGEMENT,  INC.
                            BIOSCIENCE MANAGEMENT,  INC.
                            BIOSCIENCE MANAGEMENT,  INC.
                            BIOSCIENCE MANAGEMENT,  INC.
                            BIOSCIENCE MANAGEMENT,  INC.
                            CYTO CULTURE ENVIRON. BIOTECH.
                            CYTO CULTURE ENVIRON. BIOTECH.
                            CYTO CULTURE ENVIRON. BIOTECH.
                            CYTO CULTURE ENVIRON. BIOTECH.
                            CYTO CULTURE ENVIRON. BIOTECH.
                            CYTO CULTURE ENVIRON. BIOTECH.
                            DETOX, INC.
                            DETOX, INC.
                            DETOX, INC.
                            DETOX, INC.
                            DETOX, INC.
                            DETOX, INC.
                            DETOX, INC.
                            DETOX, INC.
                            DETOX, INC.
                            DETOX, INC.
                            DETOX, INC.
                            DETOX, INC.
                            DETOX, INC.
                            DETOX, INC.
                            DETOX, INC.
                            DETOX, INC.
                            DETOX, INC.
                            DETOX, INC.
                            DETOX, INC.
                            DETOX, INC.
                            DETOX, INC.
                            DIVERSIFIED ENGINEERING, INC.
                            DIVERSIFIED ENGINEERING, INC.
                            DIVERSIFIED ENGINEERING, INC.
                            DIVERSIFIED ENGINEERING, INC.
                            DIVERSIFIED ENGINEERING, INC.
                            DIVERSIFIED ENGINEERING, INC.
                            DIVERSIFIED ENGINEERING, INC.
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
BIODEGRADATION-SLURRY PHASE
BIODEGRADATION-SOLID PHASE
IN SITU BIODEGRADATION
NEUTRALIZATION
STRIPPING
AEROBIC BIOLOGICAL
BIODEGRADATION-COMPOST ING
BIODEGRADATION-NOS
BIODEGRADATION-SOLID PHASE
IN SITU SOIL FLUSHING
SOIL WASHING
ACTIVATED CARBON
ACTIVATED SLUDGE
ADSORPTION
ANAEROBIC BIOLOGICAL
BIODEGRADATION-COMPOST ING
BIODEGRADATION-SLURRY PHASE
BIODEGRADATION-SOLID PHASE
CHEMICAL EXTRACTION
CHEMICAL OXIDATION
CHEMICAL PRECIPITATION
CHEMICAL REDUCTION
CHEMICAL TREATMENT
CHLORINATION
IN SITU BIODEGRADATION
IN SITU SOIL FLUSHING
IN SITU VACUUM & STEAM EXTRACT
IN SITU VITRIFICATION
OZONATION
SOIL WASHING
SOLVENT RECOVERY
STRIPPING
CHEMICAL OXIDATION
CHEMICAL PRECIPITATION
COAGULATION
FILTRATION
FLOCCULATION SETTLING
NEUTRALIZATION
SEDIMENTATION
ACTIVATED CARBON
ACTIVATED SLUDGE
ADSORPTION
AEROBIC BIOLOGICAL
ANAEROBIC BIOLOGICAL
BIODEGRADATION-NOS
CATALYSIS
CHEMICAL EXTRACTION
CHEMICAL OXIDATION
CHEMICAL PRECIPITATION
CHEMICAL REDUCTION
CHEMICAL TREATMENT
CHLORINATION
CRYSTALLIZATION
                                                 263

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CONTAMINANT GROUP
                                TABLE # 4 (CONTINUED)

                                   COMPANY NAME
       TREATMENT TECHNOLOGY
ORGANIC CYANIDES
                            E M & C ENGINEERING ASSOCIATES
                            E H & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            ENERGY&ENVIRONMENTAL RESEARCH CORP
                            GENERAL PHYSICS CORPORATION
                            GENERAL PHYSICS CORPORATION
                            GENERAL PHYSICS CORPORATION
                            GENERAL PHYSICS CORPORATION
                            GENERAL PHYSICS CORPORATION
                            GENERAL PHYSICS CORPORATION
                            GENERAL PHYSICS CORPORATION
                            GENERAL PHYSICS CORPORATION
                            GENERAL PHYSICS CORPORATION
                            GENERAL PHYSICS CORPORATION
                            GENERAL PHYSICS CORPORATION
                            GENERAL PHYSICS CORPORATION
                            GENERAL PHYSICS CORPORATION
                            HUNTER SERVICES, INC.
                            HUNTER SERVICES, INC.
                            HUNTER SERVICES, INC.
                            HUNTER SERVICES, INC.
                            HUNTER SERVICES, INC.
                            HUNTER SERVICES, INC.
                            HUNTER SERVICES, INC.
                            HUNTER SERVICES, INC.
                            HUNTER SERVICES, INC.
                            HUNTER SERVICES, INC.
                            I IT RESEARCH  INST
                            I IT RESEARCH  INST
                            INTERNATIONAL PROCESS RESEARCH CORP
                            INTERNATIONAL PROCESS RESEARCH CORP
                            INTERNATIONAL PROCESS RESEARCH CORP
                            INTERNATIONAL PROCESS RESEARCH CORP
                            INTERNATIONAL PROCESS RESEARCH CORP
                            INTERNATIONAL PROCESS RESEARCH CORP
                            INTERNATIONAL PROCESS RESEARCH CORP
                            INTERNATIONAL PROCESS RESEARCH CORP
                            INTERNATIONAL PROCESS RESEARCH CORP
                            INTERNATIONAL PROCESS RESEARCH CORP
                            INTERNATIONAL PROCESS RESEARCH CORP
                            INTERNATIONAL PROCESS RESEARCH CORP
                            INTERNATIONAL PROCESS RESEARCH CORP
                             INTERNATIONAL PROCESS RESEARCH CORP
IN SITU SOIL FLUSHING
INCINERATION
ION EXCHANGE
LIQUID-LIQUID EXTRACTION
LOW TEMP THERMAL STRIPPING
NEUTRALIZATION
OZONATION
REVERSE OSMOSIS
SOLVENT RECOVERY
STABILIZATION
STRIPPING
VITRIFICATION
WET AIR OXIDATION
INCINERATION
ACTIVATED CARBON
ACTIVATED SLUDGE
AEROBIC BIOLOGICAL
ANAEROBIC BIOLOGICAL
CHEMICAL OXIDATION
CHEMICAL PRECIPITATION
CHEMICAL TREATMENT
ION EXCHANGE
LIQUID-LIQUID EXTRACTION
NEUTRALIZATION
OZONATION
STABILIZATION/SOLIDIFICATION
STRIPPING
ADSORPTION
ADSORPTION
CHEMICAL OXIDATION
CHEMICAL OXIDATION
CHEMICAL PRECIPITATION
CHEMICAL PRECIPITATION
COAGULATION/FLOCCULAT ION
LOW TEMP THERMAL STRIPPING
OZONATION
STRIPPING
STABILIZATION/SOLIDIFICATION
UV/OZONATION
ACTIVATED CARBON
ADSORPTION
AEROBIC BIOLOGICAL
ANAEROBIC BIOLOGICAL
BIODEGRADATION-NOS
CHEMICAL EXTRACTION
CHEMICAL OXIDATION
CHEMICAL PRECIPITATIOK
CHEMICAL REDUCTION
CHEMICAL TREATMENT
CRYSTALLIZATION
IN SITU BIOOEGRADATION
INCINERATION
ION EXCHANGE
                                                 264

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                                TABLE # 4 (CONTINUED)
CONTAMINANT GROUP
                                   COMPANY NAME
                                                                            TREATMENT TECHNOLOGY
ORGANIC CYANIDES
                            INTERNATIONAL PROCESS RESEARCH CORP
                            INTERNATIONAL PROCESS RESEARCH CORP
                            INTERNATIONAL PROCESS RESEARCH CORP
                            INTERNATIONAL PROCESS RESEARCH CORP
                            INTERNATIONAL PROCESS RESEARCH CORP
                            INTERNATIONAL PROCESS RESEARCH CORP
                            INTERNATIONAL PROCESS RESEARCH CORP
                            INTERNATIONAL PROCESS RESEARCH CORP
                            IT CORPORATION
                            IT CORPORATION
                            IT CORPORATION
                            JACOBS ENGINEERING GROUP, INC.
                            KIBER ASSOCIATES, INC.
                            KIBER ASSOCIATES, INC.
                            MAECORP, INC.
                            MAECORP, INC.
                            MCNAMEE ADVANCED TECHNOLOGY, INC.
                            MCNAMEE ADVANCED TECHNOLOGY, INC.
                            MCNAMEE ADVANCED TECHNOLOGY, INC.
                            MCNAMEE ADVANCED TECHNOLOGY, INC.
                            MCNAMEE ADVANCED TECHNOLOGY, INC.
                            MCNAMEE ADVANCED TECHNOLOGY, INC.
                            MCNAMEE ADVANCED TECHNOLOGY, INC.
                            MCNAMEE ADVANCED TECHNOLOGY, INC.
                            MCNAMEE ADVANCED TECHNOLOGY, INC.
                            MCNAMEE ADVANCED TECHNOLOGY, INC.
                            MCNAMEE ADVANCED TECHNOLOGY, INC.
                            MIDWEST RESEARCH INSTITUTE
                            O'BRIEN AND GERE ENGINEERS, INC.
                            O'BRIEN AND GERE ENGINEERS, INC.
                            O'BRIEN AND GERE ENGINEERS, INC.
                            O'BRIEN AND GERE ENGINEERS, INC.
                            O'BRIEN AND GERE ENGINEERS, INC.
                            RADIAN CORPORATION
                            RADIAN CORPORATION
                            RADIAN CORPORATION
                            RADIAN CORPORATION
                            RADIAN CORPORATION
                            RADIAN CORPORATION
                            RADIAN CORPORATION
                            RADIAN CORPORATION
                            RADIAN CORPORATION
                            RADIAN CORPORATION
                            RADIAN CORPORATION
                            RADIAN CORPORATION
                            RADIAN CORPORATION
                            REMEDIATION TECHNOLOGIES
                            REMEDIATION TECHNOLOGIES
                            REMEDIATION TECHNOLOGIES
                            REMEDIATION TECHNOLOGIES
                            REMEDIATION TECHNOLOGIES
                            REMEDIATION TECHNOLOGIES
                            RMC ENV & ANALYTICAL  LABORATORIES
LIQUID-LIQUID EXTRACTION
NEUTRALIZATION
OZONATION
SOIL WASHING
SOLVENT RECOVERY
STABILIZATION/SOLIDIFICATION
STRIPPING
WET AIR OXIDATION
CHEMICAL EXTRACTION
CHEMICAL OXIDATION
CHLORINATION
CHEMICAL OXIDATION
ACTIVATED CARBON
CHEMICAL PRECIPITATION
CHEMICAL OXIDATION
CHEMICAL TREATMENT
CHEMICAL OXIDATION
CHEMICAL TREATMENT
CHLORINATION
LIQUID-LIQUID EXTRACTION
OZONATION
PACT
THERMAL COMBUSTION
UV/OXIDATION
VITRIFICATION
WET AIR OXIDATION
WET AIR OXIDATION
BIODEGRADATION-NOS
ADSORPTION
CHEMICAL OXIDATION
CHLORINATION
OZONATION
UV/PHOTOLYSIS
ACTIVATED CARBON
ACTIVATED SLUDGE
ANAEROBIC BIOLOGICAL
CHEMICAL EXTRACTION
CHEMICAL OXIDATION
CHEMICAL PRECIPITATION
CHLORINATION
ELECTROOIALYSIS
ION EXCHANGE
OZONATION
REVERSE OSMOSIS
STABILIZATION/SOLIDIFICATION
STRIPPING
ACTIVATED CARBON
ANAEROBIC BIOLOGICAL
BIODEGRADATION-SLURRY PHASE
BIODEGRADATION-SOLID PHASE
STABILIZATION/SOLIDIFICATION
STRIPPING
CHEMICAL EXTRACTION
                                                 265

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CONTAMINANT GROUP
                                TABLE # 4 (CONTINUED)

                                   COMPANY NAME
                                                                            TREATMENT TECHNOLOGY
ORGANIC CYANIDES
                            RMC ENV & ANALYTICAL LABORATORIES
                            RMC ENV & ANALYTICAL LABORATORIES
                            RMC ENV & ANALYTICAL LABORATORIES
                            RMC ENV & ANALYTICAL LABORATORIES
                            RMC ENV & ANALYTICAL LABORATORIES
                            RMC ENV & ANALYTICAL LABORATORIES
                            RMT, INC.
                            RMT, INC.
                            RMT, INC.
                            RMT, INC.
                            RMT, INC.
                            RMT, INC.
                            RMT, INC.
                            RMT, INC.
                            RMT, INC.
                            RMT, INC.
                            RMT, INC.
                            RMT, INC.
                            RMT, INC.
                            RMT, INC.
                            RMT, INC.
                            RNK ENVIRONMENTAL,  INC.
                            RNK ENVIRONMENTAL,  INC.
                            RNK ENVIRONMENTAL,  INC.
                            RNK ENVIRONMENTAL,  INC.
                            RNK ENVIRONMENTAL,  INC.
                            RNK ENVIRONMENTAL,  INC.
                            ROY F. WESTON. INC.
                            ROY F. WESTON, INC.
                            ROY F. WESTON, INC.
                            ROY F. WESTON, INC.
                            ROY F. WESTON, INC.
                            ROY F. WESTON, INC.
                            ROY F. WESTON, INC.
                            ROY F. WESTON, INC.
                            ROY F. WESTON, INC.
                            ROY F. WESTON, INC.
                            ROY F. WESTON, INC.
                            ROY F. WESTON, INC.
                            ROY F. WESTON, INC.
                            ROY F. WESTON, INC.
                            ROY F. WESTON, INC.
                            ROY F. WESTON, INC.
                            ROY F. WESTON, INC.
                            ROY f. WESTON, INC.
                            ROY F. WESTON, INC.
                            ROY F. WESTON, INC.
                            ROY F. WESTON, INC.
                            S-CUBED
                            SYBRON CHEMICALS,  INC.
                            SYBRON CHEMICALS,  INC.
                            SYBRON CHEMICALS,  INC.
                            SYBRON CHEMICALS,  INC.
CHEMICAL TREATMENT
IN SITU VACUUM & STEAM EXTRACT
IN SITU VITRIFICATION
INCINERATION
SOIL WASHING
STABILIZATION/SOLIDIFICATION
ACTIVATED SLUDGE
AEROBIC BIOLOGICAL
CHEMICAL OXIDATION
CHEMICAL TREATMENT
CHLORINAT ION
DISTILLATION
ELECTRODIALYSIS
EVAPORATION
IN SITU SOIL FLUSHING
ION EXCHANGE
OZONATION
SOIL WASHING
STABILIZATION/SOLIDIFICATION
STRIPPING
WET AIR OXIDATION
ACTIVATED CARBON
ACTIVATED SLUDGE
ANAEROBIC BIOLOGICAL
BIODEGRADATION-COMPOST ING
CHEMICAL OXIDATION
CHLORINATION
ACTIVATED CARBON
CENTRIFUGATION
CHEMICAL EXTRACTION
CHEMICAL OXIDATION
CHEMICAL PRECIPITATION
CHEMICAL REDUCTION
CHEMICAL TREATMENT
CHLORINATION
COAGULATION/FLOCCULATION
FILTRATION
FILTRATION
FLOTATION THICKENING
GRAVITY  THICKENING
IN SITU  SOIL FLUSHING
ION EXCHANGE
NEUTRALIZATION
OZONATION
SEDIMENTATION
SOIL WASHING
STABILIZATION/SOLIDIFICATION
STRIPPING
LIQUID-LIQUID EXTRACTION
ACTIVATED SLUDGE
ADSORPTION
AEROBIC  BIOLOGICAL
BIODEGRADATI ON-SLURRY PHASE
                                                  266

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CONTAMINANT GROUP
                                TABLE # 4 (CONTINUED)

                                   COMPANY NAME
                                                                            TREATMENT TECHNOLOGY
ORGANIC CYANIDES
                            SYBRON CHEMICALS, INC.
                            SYBRON CHEMICALS, INC.
                            SYBRON CHEMICALS, INC.
                            SYBRON CHEMICALS, INC.
                            SYBRON CHEMICALS, INC.
                            SYBRON CHEMICALS, INC.
                            THORNE ENVIRONMENTAL, INC.
                            THORNE ENVIRONMENTAL, INC.
                            ULTROX INTERNATIONAL
                            ULTROX INTERNATIONAL
                            VERSAR INC.
                            VERSAR INC.
                            VERSAR INC.
                            VERSAR INC.
                            VERSAR INC.
                            VERSAR INC.
                            VERSAR INC.
                            VERSAR INC.
                            WESTERN RESEARCH INSTITUTE
                            WESTERN RESEARCH INSTITUTE
                            WESTERN RESEARCH INSTITUTE
                            WESTERN RESEARCH INSTITUTE
                            WESTERN RESEARCH INSTITUTE
                            WESTERN RESEARCH INSTITUTE
                            WESTERN RESEARCH INSTITUTE
                            WESTERN RESEARCH INSTITUTE
                            WESTERN RESEARCH INSTITUTE
                            WESTERN RESEARCH INSTITUTE
                            WESTERN RESEARCH INSTITUTE
                            WESTERN RESEARCH INSTITUTE
                            WESTERN RESEARCH INSTITUTE
                            ZENON ENVIRONMENTAL
                            ZENON ENVIRONMENTAL
                            ZENON ENVIRONMENTAL
                            ZENON ENVIRONMENTAL
                            ZENON ENVIRONMENTAL
                            ZENON ENVIRONMENTAL
                            ZIMPRO PASSAVANT
BIODEGRADATION-SOLID PHASE
IN SITU BIODEGRADATION
IN SITU SOIL  FLUSHING
IN SITU VACUUM & STEAM EXTRACT
ION EXCHANGE
SOIL WASHING
STABILIZATION/SOLIDIFICATION
UV/DEEP TREATMENT
UV/OXIDATION
UV/OX IDAT ION
ANAEROBIC BIOLOGICAL
CHEMICAL EXTRACTION
ELECTROLYTIC  OXIDATION
ION EXCHANGE
PACT
REVERSE OSMOSIS
STABILIZATION/SOLIDIFICATION
VITRIFICATION
ACTIVATED CARBON
AEROBIC BIOLOGICAL
ANAEROBIC BIOLOGICAL
CHEMICAL OXIDATION
CHEMICAL PRECIPITATION
CHEMICAL REDUCTION
DEWATERING
ELECTROCOAGULATION
ION EXCHANGE
LIQUID-SOLID  SEPARATION
NEUTRALIZATION
REVERSE OSMOSIS
STRIPPING
ACTIVATED CARBON
ACTIVATED SLUDGE
BIODEGRADATION-NOS
CHEMICAL PRECIPITATION
REVERSE OSMOSIS
STABILIZATION/SOLIDIFICATION
WET AIR OXIDATION
OXIDIZERS
                            AAA CSI
                            AAA CSI
                            AAA CSI
                            AAA CSI
                            AAA CSI
                            AAA CSI
                            AAA CSI
                            AAA CSI
                            AAA CSI
                            AAA CSI
                            AAA CSI
                            AAA CSI
                            AAA CSI
                            AAA CSI
ACTIVATED CARBON
ADSORPTION
CATALYSIS
CENTRIFUGATION
CHEMICAL EXTRACTION
CHEMICAL OXIDATION
CHEMICAL PRECIPITATION
CHEMICAL REDUCTION
CHEMICAL TREATMENT
CRYSTALLIZATION
FILTRATION
IN SITU VACUUM & STEAM EXTRACT
INCINERATION
INCINERATION
                                                 267

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CONTAMINANT GROUP
                                TABLE # 4 (CONTINUED)

                                   COMPANY NAME
       TREATMENT TECHNOLOGY
OXIDIZERS
                            AAA CSI
                            AAA CSI
                            AAA CSI
                            AAA CSI
                            AAA CSI
                            AAA CSI
                            AAA CSI
                            AAA CSI
                            AAA CSI
                            APPLIED SURFACE TECHNOLOGY
                            APPLIED SURFACE TECHNOLOGY
                            APPLIED SURFACE TECHNOLOGY
                            APPLIED SURFACE TECHNOLOGY
                            APPLIED SURFACE TECHNOLOGY
                            APPLIED SURFACE TECHNOLOGY
                            APPLIED SURFACE TECHNOLOGY
                            APPLIED SURFACE TECHNOLOGY
                            APPLIED SURFACE TECHNOLOGY
                            APPLIED SURFACE TECHNOLOGY
                            APPLIED SURFACE TECHNOLOGY
                            APPLIED SURFACE TECHNOLOGY
                            APPLIED SURFACE TECHNOLOGY
                            APPLIED SURFACE TECHNOLOGY
                            APPLIED SURFACE TECHNOLOGY
                            APPLIED SURFACE TECHNOLOGY
                            APPLIED SURFACE TECHNOLOGY
                            APPLIED SURFACE TECHNOLOGY
                            APPLIED SURFACE TECHNOLOGY
                            APPLIED SURFACE TECHNOLOGY
                            APPLIED SURFACE TECHNOLOGY
                            APPLIED SURFACE TECHNOLOGY
                            APPLIED SURFACE TECHNOLOGY
                            DIVERSIFIED ENGINEERING, INC.
                            DIVERSIFIED ENGINEERING, INC.
                            DIVERSIFIED ENGINEERING, INC.
                            DIVERSIFIED ENGINEERING, INC.
                            DIVERSIFIED ENGINEERING, INC.
                            DIVERSIFIED ENGINEERING, INC.
                            E H &  C ENGINEERING ASSOCIATES
                            E H &  C ENGINEERING ASSOCIATES
                            E M &  C ENGINEERING ASSOCIATES
                            E M &  C ENGINEERING ASSOCIATES
                            E M &  C ENGINEERING ASSOCIATES
                            E M &  C ENGINEERING ASSOCIATES
                            E M &  C ENGINEERING ASSOCIATES
                            E M &  C ENGINEERING ASSOCIATES
                            E M &  C ENGINEERING ASSOCIATES
                            E M &  C ENGINEERING ASSOCIATES
                            E M &  C ENGINEERING ASSOCIATES
                            E M &  C ENGINEERING ASSOCIATES
                            E M &  C ENGINEERING ASSOCIATES
                            E M &  C ENGINEERING ASSOCIATES
                            E M &  C ENGINEERING ASSOCIATES
LIQUID-LIQUID EXTRACTION
LOW TEMP THERMAL STRIPPING
NEUTRALIZATION
SOLVENT RECOVERY
STABILIZATION/SOLIDIFICATION
STRIPPING
THERMAL PROCESSING
WET AIR OXIDATION
WET AIR OXIDATION
ACTIVATED CARBON
ADSORPTION
CATALYSIS
CHEMICAL EXTRACTION
CHEMICAL OXIDATION
CHEMICAL PRECIPITATION
CHEMICAL TREATMENT
CHLORINATION
CRYSTALLIZATION
ELECTRODIALYSIS
ELECTROLYSIS
FLUID-BED STRIPPING
IN SITU SOIL FLUSHING
ION EXCHANGE
LOW TEMP THERMAL STRIPPING
OZONATION
REVERSE OSMOSIS
SOIL WASHING
SOLIDIFICATION
STABILIZATION
STRIPPING
THERMAL DECOMPOSITION
ULTRAFILTRATION
CHEMICAL OXIDATION
CHEMICAL PRECIPITATION
CHLORINATION
COAGULATION
FILTRATION
NEUTRALIZATION
ACTIVATED CARBON
ACTIVATED SLUDGE
ADSORPTION
AEROBIC BIOLOGICAL
ANAEROBIC BIOLOGICAL
BIODEGRADATION-NOS
CATALYSIS
CHEMICAL EXTRACTION
CHEMICAL OXIDATION
CHEMICAL PRECIPITATION
CHEMICAL REDUCTION
CHEMICAL TREATMENT
CHLORINATION
CRYSTALLIZATION
IN SITU SOIL FLUSHING
                                                 268

-------
CONTAMINANT GROUP
                                TABLE # 4 (CONTINUED)

                                   COMPANY NAME
                                                                            TREATMENT TECHNOLOGY
OXIDIZERS
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            ENERGY&ENVIRONMENTAL RESEARCH CORP.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            GENERAL PHYSICS CORPORATION
                            GENERAL PHYSICS CORPORATION
                            GENERAL PHYSICS CORPORATION
                            GENERAL PHYSICS CORPORATION
                            GENERAL PHYSICS CORPORATION
                            GENERAL PHYSICS CORPORATION
                            HUNTER  SERVICES,  INC.
                            HUNTER  SERVICES,  INC.
                            HUNTER  SERVICES,  INC.
                            HUNTER  SERVICES,  INC.
                            HUNTER  SERVICES,  INC.
                            HUNTER  SERVICES,  INC.
                            INTERNATIONAL  PROCESS RESEARCH CORP
                            INTERNATIONAL  PROCESS RESEARCH CORP
                            INTERNATIONAL  PROCESS RESEARCH CORP
                            INTERNATIONAL  PROCESS RESEARCH CORP
                            INTERNATIONAL  PROCESS RESEARCH CORP
 INCINERATION
 ION  EXCHANGE
 LIQUID-LIQUID  EXTRACTION
 LOW  TEMP  THERMAL  STRIPPING
 NEUTRALIZATION
 OZONATION
 REVERSE OSMOSIS
 SOLVENT RECOVERY
 STABILIZATION
 STRIPPING
 VITRIFICATION
 WET  AIR OXIDATION
 INCINERATION
 ACTIVATED SLUDGE
 ADSORPTION
 BIODEGRADATION-NOS
 BIODEGRADATION-NOS
 CHEMICAL  EXTRACTION
 CHEMICAL  OXIDATION
 CHEMICAL  PRECIPITATION
 CHEMICAL  REDUCTION
 CHEMICAL  TREATMENT
 CHLORI NATION
 FILTRATION
 IN SITU BIODEGRADATION
 IN SITU SOIL FLUSHING
 IN SITU VACUUM &  STEAM  EXTRACT
 INCINERATION
 ION  EXCHANGE
 LOW  TEMP  THERMAL  STRIPPING
 NEUTRALIZATION
 SOIL WASHING
 STABILIZATION/SOLIDIFICATION
 STABILIZATION/SOLIDIFICATION
 STRIPPING
 VITRIFICATION
 AEROBIC BIOLOGICAL
 ANAEROBIC BIOLOGICAL
 CHEMICAL  REDUCTION
 ION  EXCHANGE
 NEUTRALIZATION
 OZONATION
 CHLORINATION
 LOW  TEMP  THERMAL  STRIPPING
 NEUTRALIZATION
OZONATION
 STABILIZATION/SOLIDIFICATION
STRIPPING
ACTIVATED CARBON
ADSORPTION
AEROBIC BIOLOGICAL
ANAEROBIC BIOLOGICAL
BIODEGRADATION-NOS
                                                269

-------
CONTAMINANT GROUP
                                TABLE # 4 (CONTINUED)

                                   COMPANY NAME
                                                                            TREATMENT TECHNOLOGY
OXIDIZERS
                            INTERNATIONAL PROCESS RESEARCH CORP
                            INTERNATIONAL PROCESS RESEARCH CORP
                            INTERNATIONAL PROCESS RESEARCH CORP
                            INTERNATIONAL PROCESS RESEARCH CORP
                            INTERNATIONAL PROCESS RESEARCH CORP
                            INTERNATIONAL PROCESS RESEARCH CORP
                            INTERNATIONAL PROCESS RESEARCH CORP
                            INTERNATIONAL PROCESS RESEARCH CORP
                            INTERNATIONAL PROCESS RESEARCH CORP
                            INTERNATIONAL PROCESS RESEARCH CORP
                            INTERNATIONAL PROCESS RESEARCH CORP
                            INTERNATIONAL PROCESS RESEARCH CORP
                            INTERNATIONAL PROCESS RESEARCH CORP
                            INTERNATIONAL PROCESS RESEARCH CORP
                            INTERNATIONAL PROCESS RESEARCH CORP
                            INTERNATIONAL PROCESS RESEARCH CORP
                            INTERNATIONAL PROCESS RESEARCH CORP
                            INTERNATIONAL PROCESS RESEARCH CORP
                            IT CORPORATION
                            IT CORPORATION
                            KIBER ASSOCIATES, INC.
                            MCNAMEE ADVANCED TECHNOLOGY, INC.
                            MCNAMEE ADVANCED TECHNOLOGY, INC.
                            MCNAMEE ADVANCED TECHNOLOGY, INC.
                            MCNAMEE ADVANCED TECHNOLOGY, INC.
                            O'BRIEN AND GERE ENGINEERS, INC.
                            RADIAN CORPORATION
                            RADIAN CORPORATION
                            RADIAN CORPORATION
                            RADIAN CORPORATION
                            RADIAN CORPORATION
                            RADIAN CORPORATION
                            RADIAN CORPORATION
                            RADIAN CORPORATION
                            RADIAN CORPORATION
                            RADIAN CORPORATION
                            RADIAN CORPORATION
                            RIVER OAK ASSOCIATES
                            RIVER OAK ASSOCIATES
                            RIVER OAK ASSOCIATES
                            RIVER OAK ASSOCIATES
                            RIVER OAK ASSOCIATES
                            RIVER OAK ASSOCIATES
                            RIVER OAK ASSOCIATES
                            RIVER OAK ASSOCIATES
                            RIVER OAK ASSOCIATES
                            RIVER OAK ASSOCIATES
                            RMT, INC.
                            RMT, INC.
                            RMT, INC.
                            RMT, INC.
                            RMT, INC.
                            RMT, INC.
CHEMICAL EXTRACTION
CHEMICAL OXIDATION
CHEMICAL PRECIPITATION
CHEMICAL REDUCTION
CHEMICAL TREATMENT
CHLORINATION
CRYSTALLIZATION
IN SITU BIOOEGRADATION
INCINERATION
ION EXCHANGE
LIQUID-LIQUID EXTRACTION
NEUTRALIZATION
OZONATION
SOIL WASHING
SOLVENT RECOVERY
STABILIZATION/SOLIDIFICATION
STRIPPING
WET AIR OXIDATION
CATALYSIS
CHEMICAL OXIDATION
CHEMICAL PRECIPITATION
CHEMICAL REDUCTION
CHEMICAL TREATMENT
STABILIZATION
STABILIZATION/SOLIDIFICATION
CHEMICAL REDUCTION
ACTIVATED CARBON
CHEMICAL EXTRACTION
CHEMICAL OXIDATION
CHEMICAL PRECIPITATION
CHLORINATION
ELECTRODIALYSIS
ION EXCHANGE
OZONATION
REVERSE OSMOSIS
STABILIZATION/SOLIDIFICATION
STRIPPING
ACTIVATED CARBON
ADSORPTION
CHLORINATION
CRYSTALLIZATION
ELECTRODIALYSIS
ION EXCHANGE
NEUTRALIZATION
NEUTRALIZATION
OZONATION
STRIPPING
ACTIVATED SLUDGE
ADSORPTION
CATALYSIS
CHEMICAL PRECIPITATION
CHEMICAL REDUCTION
CHEMICAL TREATMENT
                                                 270

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CONTAMINANT GROUP
     TABLE # 4 (CONTINUED)

        COMPANY NAME
                                                                            TREATMENT TECHNOLOGY
OXIDIZERS
PCBs
 RMT,  INC.
 RMT,  INC.
 RMT,  INC.
 RMT,  INC.
 RMT,  INC.
 RNK ENVIRONMENTAL,  INC.
 RNK ENVIRONMENTAL,  INC.
 RNK ENVIRONMENTAL,  INC.
 RNK ENVIRONMENTAL,  INC.
 RNK ENVIRONMENTAL,  INC.
 RODNEY KINNEY ASSOCIATES
 RODNEY KINNEY ASSOCIATES
 RODNEY KINNEY ASSOCIATES
 RODNEY KINNEY ASSOCIATES
 RODNEY KINNEY ASSOCIATES
 RODNEY KINNEY ASSOCIATES
 RODNEY KINNEY ASSOCIATES
 THORNE ENVIRONMENTAL,  INC.
 VERSAR INC.
 VERSAR INC.
 ZENON  ENVIRONMENTAL
 ZENON  ENVIRONMENTAL

 AAA CSI
 AAA CSI
 AAA CSI
 AAA CSI
 AAA CSI
 AAA CSI
 AAA CSI
 AAA CSI
 AAA CSI
 AAA CSI
 AAA CSI
 AAA CSI
 AAA CSI
 AAA CSI
 AAA CSI
 AAA CSI
 AAA CSI
 AAA CSI
 AAA CSI
 AAA CSI
 AAA CSI
 AAA CSI
 AAA CSI
AEA TECHNOLOGY
APPLIED REMEDIATION TECHNOLOGY, INC
 BIOSCIENCE MANAGEMENT, INC.
 BIOSCIENCE MANAGEMENT, INC.
BIOSCIENCE MANAGEMENT, INC.
BIOSCIENCE MANAGEMENT, INC.
BIOSCIENCE MANAGEMENT, INC.
 DISTILLATION
 EVAPORATION
 ION EXCHANGE
 REVERSE OSMOSIS
 STABILIZATION/SOLIDIFICATION
 ACTIVATED SLUDGE
 AEROBIC BIOLOGICAL
 BIODEGRADATION- COMPOST ING
 CHEMICAL OXIDATION
 CHEMICAL REDUCTION
 AEROBIC BIOLOGICAL
 ANAEROBIC BIOLOGICAL
 CHEMICAL OXIDATION
 CHEMICAL PRECIPITATION
 CHEMICAL REDUCTION
 CHLORINATION
 STABILIZATION/SOLIDIFICATION
 UV/DEEP TREATMENT
 VITRIFICATION
 WET AIR OXIDATION
 ACTIVATED CARBON
 CHEMICAL REDUCTION

 ACTIVATED CARBON
 ADSORPTION
 CATALYSIS
 CENTRIFUGATION
 CHEMICAL EXTRACTION
 CHEMICAL OXIDATION
 CHEMICAL PRECIPITATION
 CHEMICAL REDUCTION
 CHEMICAL TREATMENT
 CRYSTALLIZATION
 FILTRATION
 IN  SITU VACUUM & STEAM EXTRACT
 INCINERATION
 INCINERATION
 LIQUID-LIQUID  EXTRACTION
 LOW  TEMP THERMAL STRIPPING
 NEUTRALIZATION
 SOLVENT  RECOVERY
 STABILIZATION/SOLIDIFICATION
 STRIPPING
 THERMAL  PROCESSING
WET AIR  OXIDATION
WET AIR  OXIDATION
ELECTROCHEMICAL  INCINERATION
LOW ENERGY EXTRACTION  PROCESS
AEROBIC  BIOLOGICAL
BIODEGRADATION-COMPOSTING
BIODEGRADATION-SLURRY PHASE
BIODEGRADATION-SOLID PHASE
IN SITU BIODEGRADATION
                                                271

-------
CONTAMINANT GROUP
TABLE # 4 (CONTINUED)

   COMPANY NAME
                                                                            TREATMENT TECHNOLOGY
PC8S
                            BIOSCIENCE MANAGEMENT,  INC.
                            BIOSCIENCE MANAGEMENT,  INC.
                            C-E ENVIRONMENTAL,  INC.
                            C-E ENVIRONMENTAL,  INC.
                            C-E ENVIRONMENTAL,  INC.
                            C-E ENVIRONMENTAL,  INC.
                            C-EE BIOREMEDIATION SYSTEMS
                            C-EE BIOREMEDIATION SYSTEMS
                            C-EE BIOREMEDIATION SYSTEMS
                            C-EE BIOREMEDIATION SYSTEMS
                            C-EE BIOREMEDIATION SYSTEMS
                            C-EE BIOREMEDIATION SYSTEMS
                            C-EE BIOREMEDIATION SYSTEMS
                            C-EE BIOREMEDIATION SYSTEMS
                            C-EE BIOREMEDIATION SYSTEMS
                            C-EE BIOREMEDIATION SYSTEMS
                            C-EE BIOREMEDIATION SYSTEMS
                            C-EE BIOREMEDIATION SYSTEMS
                            C-EE BIOREMEDIATION SYSTEMS
                            C-EE BIOREMEDIATION SYSTEMS
                            C-EE BIOREMEDIATION SYSTEMS
                            C-EE BIOREMEDIATION SYSTEMS
                            CYTO CULTURE  ENVIRON. BIOTECH.
                            CYTO CULTURE  ENVIRON. BIOTECH.
                            CYTO CULTURE  ENVIRON. BIOTECH.
                            CYTO CULTURE  ENVIRON. BIOTECH.
                            CYTO CULTURE  ENVIRON. BIOTECH.
                            CYTO CULTURE  ENVIRON. BIOTECH.
                            E  M & C  ENGINEERING ASSOCIATES
                            E  M & C  ENGINEERING ASSOCIATES
                            E  M & C  ENGINEERING ASSOCIATES
                            E  M & C  ENGINEERING ASSOCIATES
                            E  M & C  ENGINEERING ASSOCIATES
                            E  M S C  ENGINEERING ASSOCIATES
                            E  M & C  ENGINEERING ASSOCIATES
                            E  M & C  ENGINEERING ASSOCIATES
                            E  M & C  ENGINEERING ASSOCIATES
                            E  M & C  ENGINEERING ASSOCIATES
                            E  M & C  ENGINEERING ASSOCIATES
                            E  M & C  ENGINEERING ASSOCIATES
                            E  M & C  ENGINEERING ASSOCIATES
                            E  M & C  ENGINEERING ASSOCIATES
                            E  M & C  ENGINEERING ASSOCIATES
                            E  M & C  ENGINEERING ASSOCIATES
                            E  M & C  ENGINEERING ASSOCIATES
                            E  M & C  ENGINEERING ASSOCIATES
                            E  M & C  ENGINEERING ASSOCIATES
                            E  M & C  ENGINEERING ASSOCIATES
                            E  M & C  ENGINEERING ASSOCIATES
                            E  M & C  ENGINEERING ASSOCIATES
                            E  M & C  ENGINEERING ASSOCIATES
                            E  M & C  ENGINEERING ASSOCIATES
                            E  M & C  ENGINEERING  ASSOCIATES
                                     NEUTRALIZATION
                                     STRIPPING
                                     ACTIVATED CARBON
                                     ADSORPTION
                                     ADSORPTION
                                     AEROBIC BIOLOGICAL
                                     ACTIVATED CARBON
                                     ACTIVATED SLUDGE
                                     ADSORPTION
                                     AEROBIC BIOLOGICAL
                                     ANAEROBIC BIOLOGICAL
                                     BIOOEGRADATION-SOLID PHASE
                                     CHEMICAL EXTRACTION
                                     IN  SITU BIODEGRADATION
                                     IN  SITU SOIL  FLUSHING
                                     IN  SITU VACUUM & STEAM EXTRACT
                                     LIQUID-LIQUID EXTRACTION
                                     LOW TEMP THERMAL STRIPPING
                                     NEUTRALIZATION
                                     NEUTRALIZATION
                                     SOIL WASHING
                                     STRIPPING
                                     AEROBIC BIOLOGICAL
                                     BIODEGRADATION-COMPOST ING
                                     BIODEGRADATION-NOS
                                     BIODEGRADATION-SOLID PHASE
                                     IN  SITU SOIL  FLUSHING
                                     SOIL WASHING
                                     ACTIVATED CARBON
                                     ACTIVATED SLUDGE
                                     ADSORPTION
                                     AEROBIC BIOLOGICAL
                                     ANAEROBIC BIOLOGICAL
                                     BIODEGRADATION-NOS
                                     CATALYSIS
                                     CHEMICAL EXTRACTION
                                     CHEMICAL OXIDATION
                                     CHEMICAL PRECIPITATION
                                     CHEMICAL REDUCTION
                                     CHEMICAL TREATMENT
                                     CHLORINATION
                                     CRYSTALLIZATION
                                     IN  SITU SOIL  FLUSHING
                                     INCINERATION
                                     ION  EXCHANGE
                                     LIQUID-LIQUID  EXTRACTION
                                     LOW  TEMP THERMAL STRIPPING
                                     OZONATION
                                     REVERSE  OSMOSIS
                                     SOLVENT  RECOVERY
                                     STABILIZATION
                                     STRIPPING
                                     VITRIFICATION
                                                272

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CONTAMINANT GROUP
TABLE # 4 (CONTINUED)

   COMPANY NAME
                                                                            TREATMENT TECHNOLOGY
PCBs
                            E M & C ENGINEERING ASSOCIATES
                            ENERGY&ENVIRONMENTAL RESEARCH CORP.
                            ENVIRONMENTAL REMEDIATION,  INC.
                            ENVIRONMENTAL REMEDIATION,  INC.
                            ENVIRONMENTAL REMEDIATION,  INC.
                            ENVIRONMENTAL REMEDIATION,  INC.
                            ENVIRONMENTAL REMEDIATION,  INC.
                            ENVIRONMENTAL REMEDIATION,  INC.
                            ENVIRONMENTAL REMEDIATION,  INC.
                            ENVIRONMENTAL REMEDIATION,  INC.
                            ENVIROSAFE TECHNOLOGIES,  INC.
                            GENERAL PHYSICS CORPORATION
                            GENERAL PHYSICS CORPORATION
                            GENERAL PHYSICS CORPORATION
                            GENERAL PHYSICS CORPORATION
                            GENERAL PHYSICS CORPORATION
                            HARMON ENVIRONMENTAL SERVICES,  INC.
                            HARMON ENVIRONMENTAL SERVICES,  INC.
                            HUNTER SERVICES,  INC.
                            HUNTER SERVICES,  INC.
                            HUNTER SERVICES,  INC.
                            HUNTER SERVICES,  INC.
                            HUNTER SERVICES,  INC.
                            HUNTER SERVICES,  INC.
                            HUNTER SERVICES,  INC.
                            HUNTER SERVICES,  INC.
                            HUNTER SERVICES,  INC.
                            HUNTER SERVICES,  INC.
                            HUNTER SERVICES,  INC.
                            HUNTER SERVICES,  INC.
                            I IT  RESEARCH  INST
                            I IT  RESEARCH  INST
                            I IT  RESEARCH  INST
                            I IT  RESEARCH  INST
                            I IT  RESEARCH  INST
                            IT CORPORATION
                            IT CORPORATION
                            IT CORPORATION
                            IT CORPORATION
                            IT CORPORATION
                            IT CORPORATION
                            KEYSTONE ENVIRONMENTAL RESOURCES
                            KEYSTONE ENVIRONMENTAL RESOURCES
                            KIBER ASSOCIATES, INC.
                            KIBER ASSOCIATES, INC.
                            MAECORP, INC.
                            MAECORP, INC.
                            MARINE POLUTION CONTROL
                            MARINE POLUTION CONTROL
                           MARINE POLUTION CONTROL
                           MIDWEST RESEARCH INSTITUTE
                           MIDWEST RESEARCH INSTITUTE
                           O'BRIEN AND GERE ENGINEERS,  INC.
                                     WET AIR OXIDATION
                                     INCINERATION
                                     ACTIVATED SLUDGE
                                     AEROBIC BIOLOGICAL
                                     BIODEGRADATION-COMPOSTING
                                     BIODEGRADATION-SLURRY PHASE
                                     BIOOEGRADATION-SOLID PHASE
                                     CHEMICAL TREATMENT
                                     IN SITU BIODEGRADATION
                                     SOIL WASHING
                                     STABILIZATION
                                     ACTIVATED SLUDGE
                                     ADSORPTION
                                     IN SITU BIODEGRADATION
                                     LIQUID-LIQUID EXTRACTION
                                     STRIPPING
                                     SOIL WASHING
                                     STABILIZATION/SOLIDIFICATION
                                     ACTIVATED SLUDGE
                                     ADSORPTION
                                     ADSORPTION
                                     CHEMICAL OXIDATION
                                     CHEMICAL OXIDATION
                                     CHEMICAL PRECIPITATION
                                     CHEMICAL PRECIPITATION
                                     COAGULATION/FLOCCULATION
                                     COAGULATION/FLOCCULATION
                                     LOW TEMP THERMAL STRIPPING
                                     STABILIZATION/SOLIDIFICATION
                                     STRIPPING
                                     CHEMICAL EXTRACTION
                                     CHEMICAL TREATMENT
                                     IN  SITU RADIO FREQUENCY  HTG
                                     STABILIZATION/SOLIDIFICATION
                                     UV/OZONATION
                                     CHEMICAL TREATMENT
                                     INCINERATION
                                     LIQUID-LIQUID  EXTRACTION
                                     LOW TEMP THERMAL  STRIPPING
                                     STABILIZATION/SOLIDIFICATION
                                     WET  AIR  OXIDATION
                                     ACTIVATED  CARBON
                                     SOIL WASHING
                                     ACTIVATED  CARBON
                                     CHEMICAL PRECIPITATION
                                    ACTIVATED  CARBON
                                    ADSORPTION/ABSORPTION
                                     FILTRATION
                                    NEUTRALIZATION
                                    STABILIZATION/SOLIDIFICATION
                                    BIODEGRADATION-NOS
                                     INCINERATION
                                    ACTIVATED CARBON
                                                273

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CONTAMINANT GROUP
TABLE # 4 (CONTINUED)

   COMPANY NAME
                                                                            TREATMENT TECHNOLOGY
PCBs
                            O'BRIEN AND GERE ENGINEERS, INC.
                            O'BRIEN AND GERE ENGINEERS, INC.
                            O'BRIEN AND GERE ENGINEERS, INC.
                            O'BRIEN AND GERE ENGINEERS, INC.
                            OGDEN ENVIRONMENTAL SERVICES,  INC.
                            OHM CORPORATION
                            OHH CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
                            PEI ASSOCIATES, INC.
                            PEI ASSOCIATES, INC.
                            PETROLEUM TESTING SERVICE,  INC.
                            QUALTEC,  INC.
                            QUALTEC,  INC.
                            QUALTEC,  INC.
                            RADIAN CORPORATION
                            RADIAN CORPORATION
                            RADIAN CORPORATION
                            RADIAN CORPORATION
                            RADIAN CORPORATION
                            RADIAN CORPORATION
                            RADIAN CORPORATION
                            RADIAN CORPORATION
                            RADIAN CORPORATION
                            RADIAN CORPORATION
                            RADIAN CORPORATION
                            RADIAN CORPORATION
                            RADIAN CORPORATION
                            RADIAN CORPORATION
                            REMEDIATION  TECHNOLOGIES
                            REMEDIATION  TECHNOLOGIES
                            REMEDIATION  TECHNOLOGIES
                            REMEDIATION  TECHNOLOGIES
                            REMEDIATION  TECHNOLOGIES
                            RMC ENV & ANALYTICAL LABORATORIES
                            RMC ENV & ANALYTICAL LABORATORIES
                            RMC ENV & ANALYTICAL LABORATORIES
                            RMC ENV & ANALYTICAL LABORATORIES
                                     ADSORPTION
                                     SOIL WASHING
                                     STABILIZATION/SOLIDIFICATION
                                     UV/PHOTOLYSIS
                                     INCINERATION
                                     ACTIVATED CARBON
                                     ACTIVATED SLUDGE
                                     ADSORPTION
                                     AEROBIC BIOLOGICAL
                                     ANAEROBIC BIOLOGICAL
                                     BIODEGRADATION-NOS
                                     BIODEGRADATION-NOS
                                     BIODEGRADATION-SOLID PHASE
                                     CHEMICAL EXTRACTION
                                     CHEMICAL OXIDATION
                                     CHEMICAL PRECIPITATION
                                     CHEMICAL TREATMENT
                                     DEUATERING
                                     IN  SITU BIODEGRADATION
                                     IN  SITU SOIL FLUSHING
                                     INCINERATION
                                     OIL-WATER SEPARATION
                                     SOIL WASHING
                                     STABILIZATION/SOLIDIFICATION
                                     LOW TEMP THERMAL DESORPTION
                                     STABILIZATION/SOLIDIFICATION
                                     IN  SITU VACUUM  & STEAM EXTRACT
                                     CHEMICAL PRECIPITATION
                                     ION EXCHANGE
                                     STABILIZATION/SOLIDIFICATION
                                     ACTIVATED CARBON
                                     ACTIVATED SLUDGE
                                     ANAEROBIC BIOLOGICAL
                                     CHEMICAL EXTRACTION
                                     CHEMICAL OXIDATION
                                     CHEMICAL PRECIPITATION
                                     CHLORINATION
                                     ELECTRODIALYSIS
                                     INCINERATION
                                     ION EXCHANGE
                                     OZONATION
                                     REVERSE  OSMOSIS
                                     STABILIZATION/SOLIDIFICATION
                                     STRIPPING
                                     BIODEGRADATION-SOLID  PHASE
                                     IN  SITU  BIODEGRADATION
                                     IN  SITU  SOIL  FLUSHING
                                     IN  SITU  VACUUM  & STEAM EXTRACT
                                     STABILIZATION/SOLIDIFICATION
                                     CHEMICAL  EXTRACTION
                                     CHEMICAL  TREATMENT
                                     IN  SITU  VACUUM  & STEAM EXTRACT
                                     IN  SITU  VITRIFICATION
                                                274

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                                TABLE # 4 (CONTINUED)
CONTAMINANT GROUP
                                   COMPANY NAME
                                                                            TREATMENT TECHNOLOGY
PCBs
                            RMC ENV & ANALYTICAL LABORATORIES
                            RMC ENV & ANALYTICAL LABORATORIES
                            RMC ENV & ANALYTICAL LABORATORIES
                            RMT, INC.
                            RMT, INC.
                            RMT, INC.
                            RMT, INC.
                            RMT, INC.
                            RMT, INC.
                            RMT, INC.
                            RMT, INC.
                            RMT, INC.
                            RNK ENVIRONMENTAL,  INC.
                            RODNEY KINNEY ASSOCIATES
                            RODNEY KINNEY ASSOCIATES
                            RODNEY KINNEY ASSOCIATES
                            RODNEY KINNEY ASSOCIATES
                            RODNEY KINNEY ASSOCIATES
                            RODNEY KINNEY ASSOCIATES
                            RODNEY KINNEY ASSOCIATES
                            ROY F. WESTON,  INC.
                            ROY F. WESTON,  INC.
                            ROY F. UESTON,  INC.
                            ROY F. WESTON,  INC.
                            ROY F. WESTON,  INC.
                            ROY F. WESTON,  INC.
                            ROY F. WESTON,  INC.
                            ROY F. WESTON,  INC.
                            ROY F. WESTON,  INC.
                            ROY F. WESTON,  INC.
                            ROY F. WESTON,  INC.
                            ROY F. WESTON,  INC.
                            ROY F. WESTON,  INC.
                            ROY F. WESTON,  INC.
                            ROY F. WESTON,  INC.
                            ROY F. WESTON,  INC.
                            ROY F. WESTON,  INC.
                            ROY F. WESTON,  INC.
                            ROY F. WESTON,  INC.
                            ROY F. WESTON,  INC.
                            ROY F. WESTON,  INC.
                            ROY F. WESTON,  INC.
                            ROY F. WESTON,  INC.
                            ROY F. WESTON,  INC.
                            ROY F. WESTON,  INC.
                            ROY F. WESTON,  INC.
                            ROY F. WESTON,  INC.
                            ROY F. WESTON,  INC.
                            ROY F. WESTON,  INC.
                            ROY F. WESTON,  INC.
                            ROY F. WESTON,  INC.
                            S-CUBED
                            SOUTHERN RESEARCH INSTITUTE
INCINERATION
SOIL WASHING
STABILIZATION/SOLIDIFICATION
ACTIVATED SLUDGE
ADSORPTION
CHEMICAL EXTRACTION
CHEMICAL TREATMENT
IN SITU SOIL FLUSHING
INCINERATION
LOW TEMP THERMAL STRIPPING
SOIL WASHING
STABILIZATION/SOLIDIFICATION
BIOOEGRADATION-COMPOSTING
AEROBIC BIOLOGICAL
ANAEROBIC BIOLOGICAL
CHEMICAL OXIDATION
CHEMICAL PRECIPITATION
CHEMICAL REDUCTION
CHLORINATION
STABILIZATION/SOLIDIFICATION
ACTIVATED CARBON
ACTIVATED SLUDGE
AEROBIC BIOLOGICAL
ANAEROBIC BIOLOGICAL
BIODEGRADATION-COMPOST ING
BIODEGRADATION-SLURRY  PHASE
BIODEGRADATION-SOLID PHASE
CENTRIFUGATION
CHEMICAL EXTRACTION
CHEMICAL OXIDATION
CHEMICAL REDUCTION
CHEMICAL TREATMENT
CHLORINATION
COAGULATION/FLOCCULAT ION
FILTRATION
FILTRATION
FLOTATION THICKENING
GRAVITY THICKENING
IN  SITU BIODEGRADATION
IN  SITU RADIO FREQUENCY HTG
IN  SITU SOIL FLUSHING
IN  SITU VACUUM & STEAM EXTRACT
INCINERATION
ION  EXCHANGE
LOW  TEMP THERMAL STRIPPING
NEUTRALIZATION
OZONATION
SEDIMENTATION
SOIL WASHING
STABILIZATION/SOLIDIFICATION
STRIPPING
LIQUID-LIQUID EXTRACTION
 IN  SITU BIODEGRADATION
                                                  275

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                                TABLE # 4 (CONTINUED)
CONTAMINANT GROUP
                                   COMPANY NAME
                                                                            TREATMENT TECHNOLOGY
PCBs
                            THORNE ENVIRONMENTAL, INC.
                            THORNE ENVIRONMENTAL, INC.
                            THORNE ENVIRONMENTAL, INC.
                            THORNE ENVIRONMENTAL, INC.
                            THORNE ENVIRONMENTAL, INC.
                            TREATEK, INC.
                            TREATEK, INC.
                            TREATEK, INC.
                            TREATEK, INC.
                            TREATEK, INC.
                            ULTROX INTERNATIONAL
                            ULTROX INTERNATIONAL
                            VERSAR INC.
                            VERSAR INC.
                            WESTERN RESEARCH INSTITUTE
                            WESTERN RESEARCH INSTITUTE
                            WESTINGHOUSE SCIENCE & TECHNOLOGY
                            ZENON ENVIRONMENTAL
                            ZENON ENVIRONMENTAL
                            ZENON ENVIRONMENTAL
                            ZENON ENVIRONMENTAL
                            ZENON ENVIRONMENTAL
                            ZENON ENVIRONMENTAL
                            ZIMPRO PASSAVANT
BIODEGRADATION-SLURRY PHASE
BICOEGRADATION-SOLID PHASE
IN SITU BIODEGRADATION
IN SITU SOIL FLUSHING
UV/DEEP TREATMENT
ADSORPTION
AEROBIC BIOLOGICAL
CHEMICAL PRECIPITATION
SOIL WASHING
STRIPPING
UV/OXIDATION
UV/OXIDATION
INCINERATION
LIQUID-LIQUID EXTRACTION
ACTIVATED CARBON
SOIL WASHING
SOIL WASHING
ACTIVATED CARBON
ACTIVATED SLUDGE
BICOEGRADATION-NOS
CHEMICAL PRECIPITATION
REVERSE OSMOSIS
STABILIZATION/SOLIDIFICATION
ADSORPTION
PESTICIDES
                            AAA CSI
                            AAA CSI
                            AAA CSI
                            AAA CSI
                            AAA CSI
                            AAA CSI
                            AAA CSI
                            AAA CSI
                            AAA CSI
                            AAA CSI
                            AAA CSI
                            AAA CSI
                            AAA CSI
                            AAA CSI
                            AAA CSI
                            AAA CSI
                            AAA CSI
                            AAA CSI
                            AAA CSI
                            AAA CSI
                            AAA CSI
                            AAA CSI
                            AAA CSI
                            AEA TECHNOLOGY
                            APPLIED REMEDIATION TECHNOLOGY, INC
                            C-E ENVIRONMENTAL, INC.
                            C-E ENVIRONMENTAL, INC.
                            C-E ENVIRONMENTAL, INC.
ACTIVATED CARBON
ADSORPTION
CATALYSIS
CENTRIFUGATION
CHEMICAL EXTRACTION
CHEMICAL OXIDATION
CHEMICAL PRECIPITATION
CHEMICAL REDUCTION
CHEMICAL TREATMENT
CRYSTALLIZATION
FILTRATION
IN SITU VACUUM & STEAM EXTRACT
INCINERATION
INCINERATION
LIQUID-LIQUID EXTRACTION
LOW TEMP THERMAL STRIPPING
NEUTRALIZATION
SOLVENT RECOVERY
STABILIZATION/SOLIDIFICATION
STRIPPING
THERMAL PROCESSING
WET AIR OXIDATION
WET AIR OXIDATION
ELECTROCHEMICAL INCINERATION
LOW ENERGY EXTRACTION PROCESS
ACTIVATED CARBON
ADSORPTION
ADSORPTION
                                                 276

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CONTAMINANT GROUP
                                TABLE # 4 (CONTINUED)

                                   COMPANY NAME
       TREATMENT TECHNOLOGY
PESTICIDES
                            C-EE BIOREMEDIATION SYSTEMS
                            C-EE BIOREMEDIATION SYSTEMS
                            C-EE BIOREMEDIATION SYSTEMS
                            C-EE BIOREMEDIATION SYSTEMS
                            C-EE BIOREMEDIATION SYSTEMS
                            C-EE BIOREMEDIATION SYSTEMS
                            C-EE BIOREMEDIATION SYSTEMS
                            C-EE BIOREMEDIATION SYSTEMS
                            C-EE BIOREMEDIATION SYSTEMS
                            C-EE BIOREMEDIATION SYSTEMS
                            C-EE BIOREMEDIATION SYSTEMS
                            C-EE BIOREMEDIATION SYSTEMS
                            C-EE BIOREMEDIATION SYSTEMS
                            C-EE BIOREMEDIATION SYSTEMS
                            C-EE BIOREMEDIATION SYSTEMS
                            C-EE BIOREMEDIATION SYSTEMS
                            CYTO CULTURE ENVIRON. BIOTECH.
                            CYTO CULTURE ENVIRON. BIOTECH.
                            CYTO CULTURE ENVIRON. BIOTECH.
                            CYTO CULTURE ENVIRON. BIOTECH.
                            CYTO CULTURE ENVIRON. BIOTECH.
                            CYTO CULTURE ENVIRON. BIOTECH.
                            DETOX, INC.
                            DETOX, INC.
                            DETOX, INC.
                            DETOX, INC.
                            DETOX, INC.
                            DETOX, INC.
                            DETOX, INC.
                            DETOX, INC.
                            DETOX, INC.
                            DETOX, INC.
                            DETOX, INC.
                            DETOX, INC.
                            DETOX, INC.
                            DETOX, INC.
                            DETOX, INC.
                            DETOX, INC.
                            DETOX, INC.
                            DETOX, INC.
                            DETOX, INC.
                            DETOX, INC.
                            DETOX, INC.
                            DIVERSIFIED ENGINEERING, INC.
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
ACTIVATED CARBON
ACTIVATED SLUDGE
ADSORPTION
AEROBIC BIOLOGICAL
ANAEROBIC BIOLOGICAL
BIODEGRADATION-SOLID PHASE
CHEMICAL EXTRACTION
IN SITU BIODEGRADATION
IN SITU SOIL FLUSHING
IN SITU VACUUM & STEAM EXTRACT
LIQUID-LIQUID EXTRACTION
LOW TEMP THERMAL STRIPPING
NEUTRALIZATION
NEUTRALIZATION
SOIL WASHING
STRIPPING
AEROBIC BIOLOGICAL
BIODEGRADATION-COMPOST ING
BIODEGRADATION-NOS
BIODEGRADATION-SOLID PHASE
IN SITU SOIL FLUSHING
SOIL WASHING
ACTIVATED CARBON
ACTIVATED SLUDGE
ADSORPTION
ANAEROBIC BIOLOGICAL
BIODEGRADATION-COMPOST ING
BIODEGRADATION-SLURRY PHASE
BIODEGRADATION-SOLID PHASE
CHEMICAL EXTRACTION
CHEMICAL OXIDATION
CHEMICAL PRECIPITATION
CHEMICAL REDUCTION
CHEMICAL TREATMENT
CHLORI NAT ION
IN SITU BIODEGRADATION
IN SITU SOIL FLUSHING
IN SITU VACUUM & STEAM EXTRACT
IN SITU VITRIFICATION
OZONATION
SOIL WASHING
SOLVENT RECOVERY
STRIPPING
INCINERATION
ACTIVATED CARBON
ACTIVATED SLUDGE
ADSORPTION
AEROBIC BIOLOGICAL
ANAEROBIC BIOLOGICAL
BIODEGRADATION-NOS
CATALYSIS
CHEMICAL EXTRACTION
CHEMICAL OXIDATION
                                                 277

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CONTAMINANT GROUP
                                TABLE # 4 (CONTINUED)

                                   COMPANY NAME
       TREATMENT TECHNOLOGY
PESTICIDES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            ENERGY&ENVIRONMENTAL RESEARCH CORP.
                            ENRECO TECHNOLOGIES GROUP
                            ENRECO TECHNOLOGIES GROUP
                            ENVIRONMENTAL REMEDIATION, INC.
                            ENVIRONMENTAL REMEDIATION, INC.
                            ENVIRONMENTAL REMEDIATION, INC.
                            ENVIRONMENTAL REMEDIATION, INC.
                            ENVIRONMENTAL REMEDIATION, INC.
                            ENVIRONMENTAL REMEDIATION, INC.
                            ENVIRONMENTAL REMEDIATION, INC.
                            ENVIRONMENTAL REMEDIATION, INC.
                            GENERAL PHYSICS CORPORATION
                            GENERAL PHYSICS CORPORATION
                            GENERAL PHYSICS CORPORATION
                            GENERAL PHYSICS CORPORATION
                            HUNTER SERVICES,  INC.
                            HUNTER SERVICES,  INC.
                            HUNTER SERVICES,  INC.
                            HUNTER SERVICES,  INC.
                            HUNTER SERVICES,  INC.
                            HUNTER SERVICES,  INC.
                            HUNTER SERVICES,  INC.
                            HUNTER SERVICES,  INC.
                            HUNTER SERVICES,  INC.
                            HUNTER SERVICES,  INC.
                            HUNTER SERVICES,  INC.
                            HUNTER SERVICES,  INC.
                            I IT RESEARCH  INST
                            I IT RESEARCH  INST
                            I IT RESEARCH  INST
                            I IT RESEARCH  INST
                            IIT RESEARCH  INST
                            I IT RESEARCH  INST
                            IT CORPORATION
                            IT CORPORATION
CHEMICAL PRECIPITATION
CHEMICAL REDUCTION
CHEMICAL TREATMENT
CHLORINATION
CRYSTALLIZATION
IN SITU SOIL FLUSHING
INCINERATION
ION EXCHANGE
LIQUID-LIQUID EXTRACTION
LOW TEMP THERMAL STRIPPING
NEUTRALIZATION
OZONATION
REVERSE OSMOSIS
SOLVENT RECOVERY
STABILIZATION
STRIPPING
VITRIFICATION
WET AIR OXIDATION
INCINERATION
CHEMICAL EXTRACTION
STABILIZATION/SOLIDIFICATION
ACTIVATED SLUDGE
AEROBIC BIOLOGICAL
BIODEGRADATION-COMPOSTING
BIODEGRADATION-SLURRY PHASE
BIODEGRADATION-SOL ID PHASE
CHEMICAL TREATMENT
IN SITU BIODEGRADATION
SOIL WASHING
ACTIVATED SLUDGE
ADSORPTION
IN SITU BIOOEGRADATION
STRIPPING
ACTIVATED SLUDGE
ADSORPTION
ADSORPTION
CHEMICAL OXIDATION
CHEMICAL OXIDATION
CHEMICAL PRECIPITATION
CHEMICAL PRECIPITATION
COAGULAT ION/FLOCCULAT ION
COAGULATION/FLOCCULATION
LOW TEMP THERMAL STRIPPING
STABILIZATION/SOLIDIFICATION
STRIPPING
CHEMICAL EXTRACTION
CHEMICAL TREATMENT
IN SITU RADIO  FREQUENCY HTG
OZONATION
STABILIZATION/SOLIDIFICATION
UV/OZONATION
CATALYSIS
CHEMICAL REDUCTION
                                                  278

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CONTAMINANT GROUP
                                TABLE # 4 (CONTINUED)

                                   COMPANY NAME
       TREATMENT TECHNOLOGY
PESTICIDES
                            IT CORPORATION
                            IT CORPORATION
                            IT CORPORATION
                            IT CORPORATION
                            KEYSTONE ENVIRONMENTAL RESOURCES
                            KEYSTONE ENVIRONMENTAL RESOURCES
                            KIBER ASSOCIATES, INC.
                            KIBER ASSOCIATES, INC.
                            KIBER ASSOCIATES, INC.
                            O'BRIEN AND GERE ENGINEERS, INC.
                            O'BRIEN AND GERE ENGINEERS, INC.
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION/SPAR
                            PEI ASSOCIATES,  INC.
                            PEI ASSOCIATES,  INC.
                            PEI ASSOCIATES,  INC.
                            PEI ASSOCIATES,  INC.
                            PETROLEUM TESTING SERVICE,  INC.
                            RADIAN  CORPORATION
                            RADIAN  CORPORATION
                            RADIAN  CORPORATION
                            RADIAN  CORPORATION
                            RADIAN  CORPORATION
                            RADIAN  CORPORATION
                            RADIAN  CORPORATION
                            RADIAN  CORPORATION
                            RADIAN  CORPORATION
                            RADIAN  CORPORATION
                            RADIAN  CORPORATION
                            RADIAN  CORPORATION
                            RADIAN  CORPORATION
                            RADIAN  CORPORATION
LOW TEMP THERMAL STRIPPING
STABILIZATION/SOLIDIFICATION
STRIPPING
WET AIR OXIDATION
ACTIVATED CARBON
OZONATION
STABILIZATION/SOLIDIFICATION
STABILIZATION/SOLIDIFICATION
STABILIZATION/SOLIDIFICATION
ACTIVATED CARBON
ADSORPTION
ACTIVATED CARBON
ACTIVATED SLUDGE
ADSORPTION
AEROBIC BIOLOGICAL
ANAEROBIC BIOLOGICAL
BIODEGRADATION-NOS
BIODEGRADATION-NOS
BIODEGRADATION-SOLID PHASE
CHEMICAL EXTRACTION
CHEMICAL OXIDATION
CHEMICAL PRECIPITATION
CHEMICAL TREATMENT
CRYSTALLIZATION
DEWATERING
IN SITU BIODEGRADATION
IN SITU BIODEGRADATION
IN SITU SOIL  FLUSHING
INCINERATION
NEUTRALIZATION
OIL-WATER SEPARATION
SOIL WASHING
STABILIZATION/SOLIDIFICATION
SOLVENT RECOVERY
FIXATION
LOW TEMP THERMAL DESORPTION
STABILIZATION/SOLIDIFICATION
THERMAL DESORPTION
IN SITU VACUUM & STEAM  EXTRACT
ACTIVATED CARBON
ACTIVATED SLUDGE
ANAEROBIC BIOLOGICAL
CHEMICAL EXTRACTION
CHEMICAL OXIDATION
CHEMICAL PRECIPITATION
CHLORINATION
ELECTRODIALYSIS
INCINERATION
ION EXCHANGE
OZONATION
REVERSE OSMOSIS
STABILIZATION/SOLIDIFICATION
STRIPPING
                                                 279

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CONTAMINANT GROUP
                                TABLE # 4 (CONTINUED)

                                   COMPANY NAME
       TREATMENT TECHNOLOGY
PESTICIDES
                            REMEDIATION TECHNOLOGIES
                            REMEDIATION TECHNOLOGIES
                            REMEDIATION TECHNOLOGIES
                            REMEDIATION TECHNOLOGIES
                            RMC ENV & ANALYTICAL LABORATORIES
                            RMC ENV & ANALYTICAL LABORATORIES
                            RMC ENV & ANALYTICAL LABORATORIES
                            RMC ENV & ANALYTICAL LABORATORIES
                            RMC ENV & ANALYTICAL LABORATORIES
                            RMC ENV & ANALYTICAL LABORATORIES
                            RMC ENV & ANALYTICAL LABORATORIES
                            RMT, INC.
                            RMT, INC.
                            RMT, INC.
                            RMT, INC.
                            RMT, INC.
                            RMT, INC.
                            RMT, INC.
                            RMT, INC.
                            RMT, INC.
                            RMT, INC.
                            RNK ENVIRONMENTAL, INC.
                            RNK ENVIRONMENTAL, INC.
                            ROY F. WESTON, INC.
                            ROY F. WESTON, INC.
                            ROY F. WESTON, INC.
                            ROY F. WESTON, INC.
                            ROY F. WESTON, INC.
                            ROY F. WESTON, INC.
                            ROY F. WESTON, INC.
                            ROY F. WESTON, INC.
                            ROY F. WESTON, INC.
                            ROY F. WESTON, INC.
                            ROY F. WESTON, INC.
                            ROY F. WESTON, INC.
                            ROY F. WESTON, INC.
                            ROY F. WESTON. INC.
                            ROY F. WESTON, INC.
                            ROY F. WESTON, INC.
                            ROY F. WESTON, INC.
                            ROY F. WESTON, INC.
                            ROY F. WESTON, INC.
                            ROY F. WESTON, INC.
                            ROY F. WESTON, INC.
                            ROY F. WESTON, INC.
                            ROY F. WESTON, INC.
                            ROY F. WESTON, INC.
                            ROY F. WESTON, INC.
                            ROY F. WESTON, INC.
                            ROY F. WESTON, INC.
                            ROY F. WESTON, INC.
                            ROY F. WESTON, INC.
                            ROY F. WESTON, INC.
IN SITU BIODEGRADATION
IN SITU SOIL FLUSHING
IN SITU VACUUM & STEAM EXTRACT
STABILIZATION/SOLIDIFICATION
CHEMICAL EXTRACTION
CHEMICAL TREATMENT
IN SITU VACUUM & STEAM EXTRACT
IN SITU VITRIFICATION
INCINERATION
SOIL WASHING
STABILIZATION/SOLIDIFICATION
ADSORPTION
BIODEGRADATION-NOS
CHEMICAL TREATMENT
DISTILLATION
EVAPORATION
IN SITU SOIL FLUSHING
LIQUID-LIQUID EXTRACTION
SOIL WASHING
STABILIZATION/SOLIDIFICATION
WET AIR OXIDATION
BIODEGRADATION-COMPOSTING
SOIL WASHING
ACTIVATED CARBON
ACTIVATED SLUDGE
AEROBIC BIOLOGICAL
ANAEROBIC BIOLOGICAL
BIODEGRADATION-COMPOST ING
BIODEGRADATION-SLURRY PHASE
BIODEGRADATION-SOLID PHASE
CENTRIFUGAT10N
CHEMICAL EXTRACTION
CHEMICAL OXIDATION
CHEMICAL PRECIPITATION
CHEMICAL REDUCTION
CHEMICAL TREATMENT
CHLORINATION
COAGULATION/FLOCCULATI ON
FILTRATION
FILTRATION
FLOTATION THICKENING
GRAVITY THICKENING
IN SITU BIODEGRADATION
IN SITU RADIO FREQUENCY HTG
IN SITU SOIL FLUSHING
IN SITU VACUUM & STEAM EXTRACT
INCINERATION
ION EXCHANGE
LOW TEMP THERMAL STRIPPING
NEUTRALIZATION
OZONATION
SEDIMENTATION
SOIL WASHING
                                                 280

-------
CONTAMINANT GROUP
                                TABLE # 4 (CONTINUED)

                                   COMPANY NAME
                                                TREATMENT  TECHNOLOGY
PESTICIDES
                            ROY F. UESTON, INC.
                            ROY F. WESTON, INC.
                            S-CUBED
                            SOUTHERN RESEARCH INSTITUTE
                            THORNE ENVIRONMENTAL, INC.
                            THORNE ENVIRONMENTAL, INC.
                            THORNE ENVIRONMENTAL, INC.
                            THORNE ENVIRONMENTAL, INC.
                            THORNE ENVIRONMENTAL, INC.
                            TREATEK, INC.
                            TREATEK, INC.
                            TREATEK, INC.
                            TREATEK, INC.
                            TREATEK, INC.
                            ULTROX INTERNATIONAL
                            ULTROX INTERNATIONAL
                            VERSAR INC.
                            VERSAR INC.
                            VERSAR INC.
                            ZENON ENVIRONMENTAL
                            ZENON ENVIRONMENTAL
                            ZENON ENVIRONMENTAL
                            ZENON ENVIRONMENTAL
                            ZENON ENVIRONMENTAL
                            ZENON ENVIRONMENTAL
                            ZENON ENVIRONMENTAL
                            ZIMPRO PASSAVANT
                            ZIMPRO PASSAVANT
                            ZIMPRO PASSAVANT
                            ZIMPRO PASSAVANT
                                         STABILIZATION/SOLIDIFICATION
                                         STRIPPING
                                         LIQUID-LIQUID  EXTRACTION
                                         IN  SITU BIODEGRADATION
                                         BIODEGRADATION-SLURRY PHASE
                                         BIODEGRADATION-SOLID PHASE
                                         IN  SITU BIODEGRADATION
                                         IN  SITU SOIL FLUSHING
                                         UV/DEEP TREATMENT
                                         ADSORPTION
                                         AEROBIC BIOLOGICAL
                                         CHEMICAL PRECIPITATION
                                         SOIL WASHING
                                         STRIPPING
                                         UV/OXIDATION
                                         UV/OXIDATION
                                         ANAEROBIC  BIOLOGICAL
                                         INCINERATION
                                         LIQUID-LIQUID  EXTRACTION
                                         ACTIVATED  CARBON
                                         ACTIVATED  SLUDGE
                                         BIODEGRADATION-NOS
                                         CHEMICAL PRECIPITATION
                                         CHEMICAL REDUCTION
                                         REVERSE OSMOSIS
                                         STABILIZATION/SOLIDIFICATION
                                         ACTIVATED  SLUDGE
                                         ADSORPTION
                                         AEROBIC PACT
                                         WET AIR OXIDATION
RADIOACTIVE MATERIALS
AEA TECHNOLOGY
AEA TECHNOLOGY
AEA TECHNOLOGY
AEA TECHNOLOGY
AEA TECHNOLOGY
AEA TECHNOLOGY
AEA TECHNOLOGY
AEA TECHNOLOGY
AEA TECHNOLOGY
AUC INCORPORATED
DIVERSIFIED ENGINEERING, INC.
DIVERSIFIED ENGINEERING, INC.
DIVERSIFIED ENGINEERING, INC.
DIVERSIFIED ENGINEERING, INC.
DIVERSIFIED ENGINEERING, INC.
DIVERSIFIED ENGINEERING, INC.
DIVERSIFIED ENGINEERING, INC.
DIVERSIFIED ENGINEERING, INC.
DIVERSIFIED ENGINEERING, INC.
DIVERSIFIED ENGINEERING, INC.
DIVERSIFIED ENGINEERING, INC.
DIVERSIFIED ENGINEERING, INC.
AEROBIC BIOLOGICAL
CHEMICAL PRECIPITATION
CHEMICAL TREATMENT
INCINERATION
ION EXCHANGE
STABILIZATION/SOLIDIFICATION
ULTRAFILTRATION
VITRIFICATION
WASHING
PHYSICAL SEPARATION
ACTIVATED CARBON ADSORPTION
CEMENT SOLIDIFICATION
CENTRIFUGATION
CHEMICAL PRECIPITATION
COAGULATION
DISTILLATION
EVAPORATION
FILTRATION
FLOCCULATION SETTLING
INCINERATION
ION EXCHANGE
LIME SOLIDIFICATION
                                                 281

-------
CONTAMINANT GROUP
    TABLE It 4 (CONTINUED)

       COMPANY NAME
                                                                            TREATMENT TECHNOLOGY
RADIOACTIVE MATERIALS
                            DIVERSIFIED ENGINEERING,  INC.
                            DIVERSIFIED ENGINEERING,  INC.
                            DIVERSIFIED ENGINEERING,  INC.
                            DIVERSIFIED ENGINEERING,  INC.
                            DIVERSIFIED ENGINEERING,  INC.
                            DIVERSIFIED ENGINEERING,  INC.
                            DIVERSIFIED ENGINEERING,  INC.
                            DIVERSIFIED ENGINEERING,  INC.
                            ENURIGHT ENVIRONMENTAL,  INC.
                            ENURIGHT ENVIRONMENTAL,  INC.
                            ENURIGHT ENVIRONMENTAL,  INC.
                            ENWRIGHT ENVIRONMENTAL,  INC.
                            ENURIGHT ENVIRONMENTAL,  INC.
                            ENWRIGHT ENVIRONMENTAL,  INC.
                            ENWRIGHT ENVIRONMENTAL,  INC.
                            ENWRIGHT ENVIRONMENTAL,  INC.
                            ENWRIGHT ENVIRONMENTAL,  INC.
                            ENWRIGHT ENVIRONMENTAL,  INC.
                            ENWRIGHT ENVIRONMENTAL,  INC.
                            ENWRIGHT ENVIRONMENTAL,  INC.
                            ENWRIGHT ENVIRONMENTAL,  INC.
                            GENERAL PHYSICS CORPORATION
                            GENERAL PHYSICS CORPORATION
                            I IT RESEARCH INST
                            I IT RESEARCH INST
                            IT CORPORATION
                            IT CORPORATION
                            IT CORPORATION
                            IT CORPORATION
                            IT CORPORATION
                            IT CORPORATION
                            MCNAMEE ADVANCED TECHNOLOGY, INC.
                            RIVER OAK ASSOCIATES
                            RIVER OAK ASSOCIATES
                            RIVER OAK ASSOCIATES
                            RIVER OAK ASSOCIATES
                            RIVER OAK ASSOCIATES
                            RIVER OAK ASSOCIATES
                            RIVER OAK ASSOCIATES
                            RIVER OAK ASSOCIATES
                            RIVER OAK ASSOCIATES
                            RIVER OAK ASSOCIATES
                            WESTERN RESEARCH INSTITUTE
                            WESTERN RESEARCH INSTITUTE
                            WESTINGHOUSE SCIENCE & TECHNOLOGY
                                         LIQUID-LIQUID  EXTRACTION
                                         ORGANIC POLYMER SOLIDIFICATION
                                         RESIN  ADSORPTION
                                         SEDIMENTATION
                                         SORBENTS SOLIDIFICATION
                                         THERMOPLASTIC  SOLIDIFICATION
                                         ULTRAFILTRATION
                                         VITRIFICATION
                                         ACTIVATED CARBON
                                         ACTIVATED SLUDGE
                                         AEROBIC BIOLOGICAL
                                         ANAEROBIC BIOLOGICAL
                                         BIODEGRADATION-SLURRY PHASE
                                         CHEMICAL EXTRACTION
                                         CHEMICAL OXIDATION
                                         CHEMICAL PRECIPITATION
                                         LIQUID-LIQUID  EXTRACTION
                                         NEUTRALIZATION
                                         OZONATION
                                         STABILIZATION/SOLIDIFICATION
                                         STRIPPING
                                         STABILIZATION/SOLIDIFICATION
                                         VITRIFICATION
                                         IN SITU RADIO  FREQUENCY HTG
                                         STABILIZATION/SOLIDIFICATION
                                         CHEMICAL PRECIPITATION
                                         INCINERATION
                                         ION EXCHANGE
                                         LOW TEMP THERMAL STRIPPING
                                         REVERSE OSMOSIS
                                         VITRIFICATION
                                         VITRIFICATION
                                         ACTIVATED CARBON
                                         ADSORPTION
                                         CHLOR I NAT ION
                                         CRYSTALLIZATION
                                         ELECTRODIALYSIS
                                         ION EXCHANGE
                                         NEUTRALIZATION
                                         NEUTRALIZATION
                                         OZONATION
                                         STRIPPING
                                         CHEMICAL PRECIPITATION
                                         CHEMICAL REDUCTION
                                         SOIL WASHING
REDUCERS
AAA CSI
AAA CSI
AAA CSI
AAA CSI
AAA CSI
AAA CSI
AAA CSI
                                                                     ACTIVATED CARBON
                                                                     ADSORPTION
                                                                     CATALYSIS
                                                                     CENTRIFUGATION
                                                                     CHEMICAL EXTRACTION
                                                                     CHEMICAL OXIDATION
                                                                     CHEMICAL PRECIPITATION
                                                 282

-------
CONTAMINANT GROUP
                                TABLE # 4 (CONTINUED)

                                   COMPANY NAME
       TREATMENT TECHNOLOGY
REDUCERS
                            AAA CSI
                            AAA CSI
                            AAA CSI
                            AAA CSI
                            AAA CSI
                            AAA CSI
                            AAA CSI
                            AAA CSI
                            AAA CSI
                            AAA CSI
                            AAA CSI
                            AAA CSI
                            AAA CSI
                            AAA CSI
                            AAA CSI
                            AAA CSI
                            DIVERSIFIED ENGINEERING, INC.
                            DIVERSIFIED ENGINEERING, INC.
                            DIVERSIFIED ENGINEERING, INC.
                            DIVERSIFIED ENGINEERING, INC.
                            DIVERSIFIED ENGINEERING, INC.
                            DIVERSIFIED ENGINEERING, INC.
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            ENERGY&ENVIRONMENTAL RESEARCH CORP.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
CHEMICAL REDUCTION
CHEMICAL TREATMENT
CRYSTALLIZATION
FILTRATION
IN SITU VACUUM & STEAM EXTRACT
INCINERATION
INCINERATION
LIQUID-LIQUID EXTRACTION
LOU TEMP THERMAL STRIPPING
NEUTRALIZATION
SOLVENT RECOVERY
STABILIZATION/SOLIDIFICATION
STRIPPING
THERMAL PROCESSING
WET AIR OXIDATION
WET AIR OXIDATION
CHEMICAL OXIDATION
CHEMICAL PRECIPITATION
CHEMICAL REDUCTION
COAGULATION
FILTRATION
NEUTRALIZATION
ACTIVATED CARBON
ACTIVATED SLUDGE
ADSORPTION
AEROBIC BIOLOGICAL
ANAEROBIC BIOLOGICAL
BIODEGRADATION-NOS
CATALYSIS
CHEMICAL EXTRACTION
CHEMICAL OXIDATION
CHEMICAL REDUCTION
CHEMICAL TREATMENT
CHLORINAT ION
CRYSTALLIZATION
IN SITU SOIL FLUSHING
INCINERATION
ION EXCHANGE
LIQUID-LIQUID EXTRACTION
LOW TEMP THERMAL STRIPPING
NEUTRALIZATION
OZONATION
REVERSE OSMOSIS
SOLVENT RECOVERY
STABILIZATION
STRIPPING
VITRIFICATION
WET AIR OXIDATION
INCINERATION
ACTIVATED SLUDGE
ADSORPTION
BIODEGRADATION-NOS
BIODEGRADATION-NOS
                                                 283

-------
CONTAMINANT GROUP
TABLE # 4 (CONTINUED)

   COMPANY NAME
       TREATMENT TECHNOLOGY
REDUCERS
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            ENSOTECH, INC.
                            GENERAL PHYSICS CORPORATION
                            GENERAL PHYSICS CORPORATION
                            GENERAL PHYSICS CORPORATION
                            GENERAL PHYSICS CORPORATION
                            GENERAL PHYSICS CORPORATION
                            GENERAL PHYSICS CORPORATION
                            GENERAL PHYSICS CORPORATION
                            HUNTER SERVICES, INC.
                            HUNTER SERVICES, INC.
                            HUNTER SERVICES, INC.
                            HUNTER SERVICES, INC.
                            HUNTER SERVICES, INC.
                            INTERNATIONAL PROCESS RESEARCH
                            INTERNATIONAL PROCESS RESEARCH
                            INTERNATIONAL PROCESS RESEARCH
                            INTERNATIONAL PROCESS RESEARCH
                            INTERNATIONAL PROCESS RESEARCH
                            INTERNATIONAL PROCESS RESEARCH
                            INTERNATIONAL PROCESS RESEARCH
                            INTERNATIONAL PROCESS RESEARCH
                            INTERNATIONAL PROCESS RESEARCH
                            INTERNATIONAL PROCESS RESEARCH
                            INTERNATIONAL PROCESS RESEARCH
                            INTERNATIONAL PROCESS RESEARCH
                            INTERNATIONAL PROCESS RESEARCH
                            INTERNATIONAL PROCESS RESEARCH
                            INTERNATIONAL PROCESS RESEARCH
                            INTERNATIONAL PROCESS RESEARCH
                            INTERNATIONAL PROCESS RESEARCH
                            INTERNATIONAL PROCESS RESEARCH
                            INTERNATIONAL PROCESS RESEARCH
                            INTERNATIONAL PROCESS RESEARCH
                            INTERNATIONAL PROCESS RESEARCH
                            INTERNATIONAL PROCESS RESEARCH
                           CORP
                           CORP
                           CORP
                           CORP
                           CORP
                           CORP
                           CORP
                           CORP
                           CORP
                           CORP
                           CORP
                           CORP
                           CORP
                           CORP
                           CORP
                           CORP
                           CORP
                           CORP
                           CORP
                           CORP
                           CORP
                           CORP
CHEMICAL EXTRACTION
CHEMICAL OXIDATION
CHEMICAL PRECIPITATION
CHEMICAL REDUCTION
CHEMICAL TREATMENT
CHLORINATION
FILTRATION
IN SITU BIODEGRADATION
IN SITU SOIL FLUSHING
IN SITU VACUUM & STEAM EXTRACT
INCINERATION
ION EXCHANGE
LOU TEMP THERMAL STRIPPING
NEUTRALIZATION
SOIL WASHING
STABILIZATION/SOLIDIFICATION
STABILIZATION/SOLIDIFICATION
STRIPPING
VITRIFICATION
ACTIVATED CARBON
AEROBIC BIOLOGICAL
ANAEROBIC BIOLOGICAL
CHEMICAL OXIDATION
ION EXCHANGE
NEUTRALIZATION
OZONATION
CHLORINATION
LOU TEMP THERMAL STRIPPING
NEUTRALIZATION
OZONATION
STRIPPING
ACTIVATED CARBON
ADSORPTION
AEROBIC BIOLOGICAL
ANAEROBIC BIOLOGICAL
BIODEGRADATION-NOS
CHEMICAL EXTRACTION
CHEMICAL OXIDATION
CHEMICAL PRECIPITATION
CHEMICAL REDUCTION
CHEMICAL TREATMENT
CHLORINATION
CRYSTALLIZATION
IN SITU BIODEGRADATION
INCINERATION
ION EXCHANGE
LIQUID-LIQUID EXTRACTION
NEUTRALIZATION
OZONATION
SOIL UASHING
SOLVENT RECOVERY
STABILIZATION/SOLIDIFICATION
STRIPPING
                                                 284

-------
                                TABLE # 4 (CONTINUED)
CONTAMINANT GROUP
                                   COMPANY NAME
                                                                            TREATMENT TECHNOLOGY
REDUCERS
                            INTERNATIONAL PROCESS RESEARCH CORP
                            IT CORPORATION
                            MCNAMEE ADVANCED TECHNOLOGY, INC.
                            MCNAMEE ADVANCED TECHNOLOGY, INC.
                            MCNAMEE ADVANCED TECHNOLOGY, INC.
                            MCNAMEE ADVANCED TECHNOLOGY, INC.
                            MCNAMEE ADVANCED TECHNOLOGY, INC.
                            MCNAMEE ADVANCED TECHNOLOGY, INC.
                            O'BRIEN AND GERE ENGINEERS, INC.
                            O'BRIEN AND GERE ENGINEERS, INC.
                            O'BRIEN AND GERE ENGINEERS, INC.
                            O'BRIEN AND GERE ENGINEERS, INC.
                            O'BRIEN AND GERE ENGINEERS, INC.
                            RADIAN CORPORATION
                            RADIAN CORPORATION
                            RADIAN CORPORATION
                            RADIAN CORPORATION
                            RADIAN CORPORATION
                            RADIAN CORPORATION
                            RADIAN CORPORATION
                            RADIAN CORPORATION
                            RADIAN CORPORATION
                            RADIAN CORPORATION
                            RADIAN CORPORATION
                            RIVER OAK ASSOCIATES
                            RIVER OAK ASSOCIATES
                            RIVER OAK ASSOCIATES
                            RIVER OAK ASSOCIATES
                            RIVER OAK ASSOCIATES
                            RIVER OAK ASSOCIATES
                            RIVER OAK ASSOCIATES
                            RIVER OAK ASSOCIATES
                            RIVER OAK ASSOCIATES
                            RMT, INC.
                            RMT, INC.
                            RMT, INC.
                            RMT, INC.
                            RMT, INC.
                            RMT, INC.
                            RMT, INC.
                            RMT, INC.
                            RMT, INC.
                            RMT, INC.
                            RMT, INC.
                            RMT, INC.
                            RMT, INC.
                            RMT, INC.
                            RNK ENVIRONMENTAL, INC.
                            RNK ENVIRONMENTAL, INC.
                            RNK ENVIRONMENTAL, INC.
                            RNK ENVIRONMENTAL, INC.
                            RODNEY KINNEY ASSOCIATES
                            RODNEY KINNEY ASSOCIATES
UET AIR OXIDATION
CHEMICAL OXIDATION
CHEMICAL OXIDATION
CHEMICAL TREATMENT
CHLORINATION
STABILIZATION
STABILIZATION/SOLIDIFICATION
VITRIFICATION
ACTIVATED SLUDGE
AEROBIC BIOLOGICAL
CHEMICAL OXIDATION
CHLORINATION
OZONATION
ACTIVATED CARBON
CHEMICAL EXTRACTION
CHEMICAL OXIDATION
CHEMICAL PRECIPITATION
CHLORINATION
ELECTRODIALYSIS
ION EXCHANGE
OZONATION
REVERSE OSMOSIS
STABILIZATION/SOLIDIFICATION
STRIPPING
ACTIVATED CARBON
ADSORPTION
CHLORINATION
CRYSTALLIZATION
ELECTRODIALYSIS
ION EXCHANGE
NEUTRALIZATION
NEUTRALIZATION
STRIPPING
ACTIVATED CARBON
ACTIVATED SLUDGE
ADSORPTION
CATALYSIS
CHEMICAL OXIDATION
CHEMICAL PRECIPITATION
CHLORINATION
DISTILLATION
EVAPORATION
INCINERATION
ION EXCHANGE
OZONATION
REVERSE OSMOSIS
UET AIR OXIDATION
AEROBIC BIOLOGICAL
BIODEGRADATION- COMPOST ING
CHEMICAL OXIDATION
CHEMICAL REDUCTION
AEROBIC BIOLOGICAL
ANAEROBIC BIOLOGICAL
                                                 285

-------
CONTAMINANT GROUP
    TABLE # 4 (CONTINUED)

       COMPANY NAME
                                                                            TREATMENT  TECHNOLOGY
REDUCERS
VOLATILE METALS
RODNEY KINNEY ASSOCIATES
RODNEY KINNEY ASSOCIATES
RODNEY KINNEY ASSOCIATES
RODNEY KINNEY ASSOCIATES
RODNEY KINNEY ASSOCIATES
THORNE ENVIRONMENTAL, INC.
VERSAR INC.
VERSAR INC.
VERSAR INC.
ZENON ENVIRONMENTAL
ZENON ENVIRONMENTAL

AAA CSI
AAA CSI
AAA CSI
AAA CSI
AAA CSI
AAA CSI
AAA CSI
AAA CSI
AAA CSI
AAA CSI
AAA CSI
AAA CSI
AAA CSI
AAA CSI
AAA CSI
AAA CSI
AAA CSI
AAA CSI
AAA CSI
AAA CSI
AAA CSI
AAA CSI
AAA CSI
ANDCO ENVIRONMENTAL PROCESSES, INC.
ANDCO ENVIRONMENTAL PROCESSES, INC.
ANDCO ENVIRONMENTAL PROCESSES, INC.
ANDCO ENVIRONMENTAL PROCESSES, INC.
ANDCO ENVIRONMENTAL PROCESSES, INC.
APPLIED REMEDIATION TECHNOLOGY, INC
CHEMFIX ENVIRONMENTAL SERVICES
DETOX, INC.
DETOX, INC.
DETOX, INC.
DETOX, INC.
DETOX, INC.
DETOX, INC.
DETOX, INC.
DETOX, INC.
DETOX, INC.
DETOX, INC.
DETOX, INC.
CHEMICAL OXIDATION
CHEMICAL PRECIPITATION
CHEMICAL REDUCTION
CHLORINATION
STABILIZATION/SOLIDIFICATION
UV/DEEP TREATMENT
CHEMICAL OXIDATION
VITRIFICATION
WET AIR OXIDATION
ACTIVATED CARBON
CHEMICAL REDUCTION

ACTIVATED CARBON
ADSORPTION
CATALYSIS
CENTRIFUGATION
CHEMICAL EXTRACTION
CHEMICAL OXIDATION
CHEMICAL PRECIPITATION
CHEMICAL REDUCTION
CHEMICAL TREATMENT
CRYSTALLIZATION
FILTRATION
IN SITU VACUUM & STEAM EXTRACT
INCINERATION
INCINERATION
LIQUID-LIQUID EXTRACTION
LOW TEMP THERMAL STRIPPING
NEUTRALIZATION
SOLVENT RECOVERY
STABILIZATION/SOLIDIFICATION
STRIPPING
THERMAL PROCESSING
WET AIR OXIDATION
WET AIR OXIDATION
CHEMICAL PRECIPITATION
CLARIFICATION
FILTRATION
STABILIZATION
STABILIZATION/SOLIDIFICATION
LOU ENERGY EXTRACTION PROCESS
FIXATION/STABILIZATION
ACTIVATED CARBON
ACTIVATED SLUDGE
ADSORPTION
ANAEROBIC BIOLOGICAL
BIODEGRADATION-COMPOST ING
BIODEGRADATION-SLURRY PHASE
BIODEGRADATION-SOLID PHASE
CHEMICAL EXTRACTION
CHEMICAL OXIDATION
CHEMICAL PRECIPITATION
CHEMICAL REDUCTION
                                                 286

-------
CONTAMINANT GROUP
                                TABLE # 4 (CONTINUED)

                                   COMPANY NAME
       TREATMENT TECHNOLOGY
VOLATILE METALS
                            DETOX, INC.
                            DETOX, INC.
                            DETOX, INC.
                            DETOX, INC.
                            DETOX, INC.
                            DETOX, INC.
                            DETOX, INC.
                            DETOX, INC.
                            DETOX, INC.
                            DETOX, INC.
                            DIVERSIFIED ENGINEERING, INC.
                            DIVERSIFIED ENGINEERING, INC.
                            DIVERSIFIED ENGINEERING, INC.
                            E M & C ENGINEERING ASSOCIATES
                            E H & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E H & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            E M & C ENGINEERING ASSOCIATES
                            EARTH TECHNOLOGY CORP.
                            ENRECO TECHNOLOGIES GROUP
                            ENRECO TECHNOLOGIES GROUP
                            FRANCIS A. MCLOUGHLIN
                            GENERAL PHYSICS CORPORATION
                            GENERAL PHYSICS CORPORATION
                            GENERAL PHYSICS CORPORATION
                            GENERAL PHYSICS CORPORATION
                            GENERAL PHYSICS CORPORATION
                            GENERAL PHYSICS CORPORATION
                            GENERAL PHYSICS CORPORATION
                            GENERAL PHYSICS CORPORATION
                            HUNTER SERVICES, INC.
CHEMICAL TREATMENT
CHLORI NAT ION
IN SITU BIODEGRADATION
IN SITU SOIL FLUSHING
IN SITU VACUUM & STEAM EXTRACT
IN SITU VITRIFICATION
OZONATION
SOIL WASHING
SOLVENT RECOVERY
STRIPPING
DISTILLATION
EVAPORATION
INCINERATION
ACTIVATED CARBON
ACTIVATED SLUDGE
ADSORPTION
AEROBIC BIOLOGICAL
ANAEROBIC BIOLOGICAL
BIODEGRADATION-NOS
CATALYSIS
CHEMICAL EXTRACTION
CHEMICAL OXIDATION
CHEMICAL PRECIPITATION
CHEMICAL REDUCTION
CHEMICAL TREATMENT
CHLORINATION
CRYSTALLIZATION
IN SITU SOIL FLUSHING
INCINERATION
ION EXCHANGE
LIQUID-LIQUID EXTRACTION
LOW TEMP THERMAL STRIPPING
NEUTRALIZATION
OZONATION
REVERSE OSMOSIS
SOLVENT RECOVERY
STABILIZATION
STRIPPING
VITRIFICATION
WET AIR OXIDATION
SOIL WASHING
CHEMICAL EXTRACTION
STABILIZATION/SOLIDIFICATION
NEUTRALIZATION
ADSORPTION
CATALYSIS
CHEMICAL PRECIPITATION
CHEMICAL TREATMENT
ION EXCHANGE
LIQUID-LIQUID EXTRACTION
NEUTRALIZATION
STABILIZATION/SOLIDIFICATION
ACTIVATED SLUDGE
                                                 287

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CONTAMINANT GROUP
TABLE # 4 (CONTINUED)

   COMPANY NAME
                                                                            TREATMENT TECHNOLOGY
VOLATILE METALS
                            HUNTER SERVICES,  INC.
                            HUNTER SERVICES.  INC.
                            HUNTER SERVICES,  INC.
                            HUNTER SERVICES,  INC.
                            HUNTER SERVICES,  INC.
                            HUNTER SERVICES,  INC.
                            HUNTER SERVICES,  INC.
                            HUNTER SERVICES,  INC.
                            HUNTER SERVICES,  INC.
                            I IT RESEARCH INST
                            IT CORPORATION
                            IT CORPORATION
                            JACOBS ENGINEERING GROUP, INC.
                            JACOBS ENGINEERING GROUP, INC.
                            JACOBS ENGINEERING GROUP, INC.
                            KEYSTONE ENVIRONMENTAL RESOURCES
                            KEYSTONE ENVIRONMENTAL RESOURCES
                            KIBER ASSOCIATES, INC.
                            KIBER ASSOCIATES, INC.
                            KIBER ASSOCIATES, INC.
                            KIBER ASSOCIATES, INC.
                            KIBER ASSOCIATES, INC.
                            KSE, INC.
                            KSE. INC.
                            KSE, INC.
                            KSE, INC.
                            KSE, INC.
                            KSE, INC.
                            KSE, INC.
                            MAECORP, INC.
                            MAECORP, INC.
                            MAECORP, INC.
                            MAECORP, INC.
                            MAECORP, INC.
                            MAECORP, INC.
                            MAECORP, INC.
                            MAECORP, INC.
                            MAECORP, INC.
                            MAECORP, INC.
                            MAECORP, INC.
                            MAECORP, INC.
                            MCNAMEE ADVANCED  TECHNOLOGY,  INC.
                            O'BRIEN AND GERE  ENGINEERS,  INC.
                            O'BRIEN AND GERE  ENGINEERS,  INC.
                            O'BRIEN AND GERE  ENGINEERS,  INC.
                            O'BRIEN AND GERE  ENGINEERS,  INC.
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
                                     ADSORPTION
                                     ADSORPTION
                                     CHEMICAL OXIDATION
                                     CHEMICAL OXIDATION
                                     CHEMICAL PRECIPITATION
                                     CHEMICAL PRECIPITATION
                                     COAGULATION/F LOCCULATION
                                     COAGULATION/FLOCCULATION
                                     STABILIZATION/SOLIDIFICATION
                                     STABILIZATION/SOLIDIFICATION
                                     CHEMICAL OXIDATION
                                     INCINERATION
                                     CHEMICAL PRECIPITATION
                                     PHYSICAL SEPARATION
                                     STABILIZATION/SOLIDIFICATION
                                     ION EXCHANGE
                                     REVERSE OSMOSIS
                                     ACTIVATED CARBON
                                     CHEMICAL PRECIPITATION
                                     STABILIZATION/SOLIDIFICATION
                                     STABILIZATION/SOLIDIFICATION
                                     STABILIZATION/SOLIDIFICATION
                                     ACTIVATED CARBON
                                     ADSORPTION
                                     CATALYSIS
                                     CHEMICAL EXTRACTION
                                     LOW TEMP THERMAL STRIPPING
                                     STRIPPING
                                     ULTRAFILTRATION
                                     ADSORPTION/ABSORPTION
                                     CHEMICAL EXTRACTION
                                     CHEMICAL PRECIPITATION
                                     CHEMICAL TREATMENT
                                     CRYSTALLIZATION
                                     FREEZE CONCENTRATION
                                     ION EXCHANGE
                                     LIQUID-LIQUID EXTRACTION
                                     REVERSE OSMOSIS
                                     SOLVENT RECOVERY
                                     STABILIZATION/SOLIDIFICATION
                                     STRIPPING
                                     STRIPPING
                                     ADSORPTION
                                     ION EXCHANGE
                                     SOIL WASHING
                                     STABILIZATION/SOLIDIFICATION
                                     ACTIVATED CARBON
                                     ADSORPTION
                                     CHEMICAL EXTRACTION
                                     CHEMICAL OXIDATION
                                     CHEMICAL PRECIPITATION
                                     CHEMICAL REDUCTION
                                     CHEMICAL TREATMENT
                                                 288

-------
CONTAMINANT GROUP
                                TABLE # 4 (CONTINUED)

                                   COMPANY NAME
       TREATMENT TECHNOLOGY
VOLATILE METALS
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION
                            OHM CORPORATION/SPAR
                            PEI ASSOCIATES, INC.
                            PEI ASSOCIATES, INC.
                            PEI ASSOCIATES, INC.
                            PEI ASSOCIATES, INC.
                            PEI ASSOCIATES, INC.
                            PEI ASSOCIATES, INC.
                            PEI ASSOCIATES, INC.
                            PITTSBURGH MIN&ENV.TECH., INC.
                            PITTSBURGH MIN&ENV.TECH., INC.
                            PITTSBURGH MIN&ENV.TECH., INC.
                            PITTSBURGH MIN&ENV.TECH., INC.
                            PYROGENICS, INC.
                            PYROGENICS, INC.
                            PYROGENICS, INC.
                            PYROGENICS, INC.
                            RADIAN CORPORATION
                            RADIAN CORPORATION
                            RADIAN CORPORATION
                            RADIAN CORPORATION
                            RADIAN CORPORATION
                            RADIAN CORPORATION
                            RADIAN CORPORATION
                            RADIAN CORPORATION
                            RADIAN CORPORATION
                            RADIAN CORPORATION
                            RADIAN CORPORATION
                            RADIAN CORPORATION
                            REMEDIATION TECHNOLOGIES
                            REMEDIATION TECHNOLOGIES
                            REMEDIATION TECHNOLOGIES
                            RIVER OAK ASSOCIATES
                            RIVER OAK ASSOCIATES
                            RIVER OAK ASSOCIATES
                            RIVER OAK ASSOCIATES
                            RIVER OAK ASSOCIATES
                            RIVER OAK ASSOCIATES
                            RIVER OAK ASSOCIATES
                            RIVER OAK ASSOCIATES
                            RIVER OAK ASSOCIATES
                            RIVER OAK ASSOCIATES
                            RMT, INC.
                            RMT, INC.
                            RMT, INC.
CRYSTALLIZATION
DEWATERING
IN SITU BIODEGRADATION
IN SITU SOIL FLUSHING
ION EXCHANGE
LOW TEMP THERMAL STRIPPING
NEUTRALIZATION
OIL-WATER SEPARATION
STABILIZATION/SOLIDIFICATION
SOLVENT RECOVERY
AEROBIC BIOLOGICAL
FIXATION
FIXATION
LOW TEMP THERMAL DESORPTION
SOIL WASHING
STABILIZATION/SOLIDIFICATION
STABILIZATION/SOLIDIFICATION
CHEMICAL EXTRACTION
CHEMICAL PRECIPITATION
PHYSICAL SEPARATION
SOIL WASHING
DEWATERING
STABILIZATION/SOLIDIFICATION
THERMAL DESTRUCTION
VITRIFICATION
ACTIVATED CARBON
CHEMICAL EXTRACTION
CHEMICAL OXIDATION
CHEMICAL PRECIPITATION
CHLORINATION
ELECTROOIALYSIS
INCINERATION
ION EXCHANGE
OZONATION
REVERSE OSMOSIS
STABILIZATION/SOLIDIFICATION
STRIPPING
CHEMICAL EXTRACTION
IN SITU BIODEGRADATION
SOIL WASHING
ACTIVATED CARBON
ADSORPTION
CHLORINATION
CRYSTALLIZATION
ELECTRODIALYSIS
ION EXCHANGE
NEUTRALIZATION
NEUTRALIZATION
OZONATION
STRIPPING
ADSORPTION
CHEMICAL EXTRACTION
CHEMICAL OXIDATION
                                                 289

-------
CONTAMINANT GROUP
    TABLE # 4 (CONTINUED)

       COMPANY NAME
                                                                            TREATMENT TECHNOLOGY
VOLATILE METALS
NOT SPECIFIED
RMT.  INC.
RMT,  INC.
RMT.  INC.
RMT,  INC.
RMT,  INC.
RMT,  INC.
RMT,  INC.
RMT,  INC.
RNK ENVIRONMENTAL, INC.
RNK ENVIRONMENTAL, INC.
ROY F. WESTON, INC.
ROY F. WESTON, INC.
ROY F. WESTON, INC.
ROY F. WESTON, INC.
ROY F. WESTON, INC.
THORNE ENVIRONMENTAL, INC.
VERSAR INC.
VERSAR INC.
VERSAR INC.
VERSAR INC.
VERSAR INC.
VERSAR INC.
VERSAR INC.
VERSAR INC.

AEA TECHNOLOGY
AEA TECHNOLOGY
AEA TECHNOLOGY
ANDCO ENVIRONMENTAL PROCESSES, INC.
ANDCO ENVIRONMENTAL PROCESSES, INC.
BIOSCIENCE MANAGEMENT, INC.
C-E ENVIRONMENTAL, INC.
C-E ENVIRONMENTAL, INC.
C-E ENVIRONMENTAL, INC.
C-E ENVIRONMENTAL, INC.
C-E ENVIRONMENTAL, INC.
C-E ENVIRONMENTAL, INC.
C-E ENVIRONMENTAL, INC.
C-E ENVIRONMENTAL, INC.
C-E ENVIRONMENTAL, INC.
C-E ENVIRONMENTAL, INC.
CAMBRIDGE SCIENTIFIC, INC.
CHEMENCO, INC.
CHENENCO, INC.
CHEMENCO, INC.
CHEMENCO, INC.
CHEMENCO, INC.
CHEMENCO, INC.
CHEMENCO, INC.
CHEMENCO, INC.
CHEMENCO, INC.
CHEMENCO, INC.
CHEMENCO, INC.
CHEMICAL  PRECIPITATION
DISTILLATION
ELECTRCOIALYSIS
IN  SITU SOIL  FLUSHING
IN  SITU VACUUM &  STEAM  EXTRACT
ION EXCHANGE
REVERSE OSMOSIS
SOIL WASHING
CHEMICAL  PRECIPITATION
ION EXCHANGE
IN  SITU RADIO FREQUENCY HTG
INCINERATION
LOW TEMP  THERMAL  STRIPPING
PHYSICAL  TREATMENT-NOS
THERMAL TREATMENT-NOS
STABILIZATION/SOLIDIFICATION
CHEMICAL  EXTRACTION
CHEMICAL  OXIDATION
CHEMICAL  PRECIPITATION
INCINERATION
ION EXCHANGE
REVERSE OSMOSIS
STABILIZATION/SOLIDIFICATION
VITRIFICATION

CRYSTALLIZATION
LIQUID-LIQUID EXTRACTION
LIQUID-SOLID  SEPARATION
ACTIVATED CARBON
CHEMICAL OXIDATION
BIODEGRADATION-NOS
BIODEGRADATION-SLURRY PHASE
CHEMICAL DECHLORINATION
CHEMICAL DECHLORINATION
CHEMICAL EXTRACTION
CHEMICAL PRECIPITATION
IN  SITU VACUUM & STEAM  EXTRACT
INCINERATION
SOLIDIFICATION
THERMAL FIXATION
VITRIFICATION
CHEMICAL OXIDATION
ACTIVATED CARBON
ACTIVATED SLUDGE
ADSORPTION
AEROBIC BIOLOGICAL
ANAEROBIC BIOLOGICAL
BIODEGRADATION-NOS
CATALYSIS
CHEMICAL EXTRACTION
CHEMICAL PRECIPITATION
CHEMICAL TREATMENT
CRYSTALLIZATION
                                                290

-------
CONTAMINANT GROUP
                                TABLE # 4 (CONTINUED)

                                   COMPANY NAME
       TREATMENT TECHNOLOGY
NOT SPECIFIED
                            CHEMENCO, INC.
                            CHEMENCO, INC.
                            CHEMENCO, INC.
                            CHEMENCO, INC.
                            CHEMENCO, INC.
                            CHEMENCO, INC.
                            CHEMENCO, INC.
                            CHEMENCO, INC.
                            CHEMENCO, INC.
                            CHEMENCO, INC.
                            CHEMENCO, INC.
                            CHEMENCO, INC.
                            CHEMENCO, INC.
                            CHEMENCO, INC.
                            EARTH TECHNOLOGY CORP.
                            EARTH TECHNOLOGY CORP.
                            EARTH TECHNOLOGY CORP.
                            EARTH TECHNOLOGY CORP.
                            EARTH TECHNOLOGY CORP.
                            EARTH TECHNOLOGY CORP.
                            EARTH TECHNOLOGY CORP.
                            EARTH TECHNOLOGY CORP.
                            EARTH TECHNOLOGY CORP.
                            EARTH TECHNOLOGY CORP.
                            EARTH TECHNOLOGY CORP.
                            EARTH TECHNOLOGY CORP.
                            EARTH TECHNOLOGY CORP.
                            ENSR - CELGENE
                            ENSR - CELGENE
                            ENSR - CELGENE
                            ENSR - CELGENE
                            ENSR - CELGENE
                            ENSR - CELGENE
                            ENSR - CELGENE
                            FORMULA ENVIRONMENTAL COMPANY
                            FORMULA ENVIRONMENTAL COMPANY
                            GENERAL PHYSICS CORPORATION
                            GROUNDUATER & ENVIRONMENTAL SERVICE
                            GROUNDUATER & ENVIRONMENTAL SERVICE
                            GROUNDUATER & ENVIRONMENTAL SERVICE
                            GROUNDUATER & ENVIRONMENTAL SERVICE
                            GROUNDUATER & ENVIRONMENTAL SERVICE
                            GROUNDUATER & ENVIRONMENTAL SERVICE
                            GROUNDUATER & ENVIRONMENTAL SERVICE
                            GROUNDUATER & ENVIRONMENTAL SERVICE
                            GROUNDUATER & ENVIRONMENTAL SERVICE
                            GROUNDUATER & ENVIRONMENTAL SERVICE
                            GROUNDUATER & ENVIRONMENTAL SERVICE
                            HARMON ENVIRONMENTAL SERVICES,  INC.
                            HARMON ENVIRONMENTAL SERVICES,  INC.
                            HARMON ENVIRONMENTAL SERVICES,  INC.
                            HARMON ENVIRONMENTAL SERVICES,  INC.
                            HAZANSUERS, INC.
IN SITU VACUUM & STEAM EXTRACT
INCINERATION
INCINERATION
ION EXCHANGE
LIQUID-LIQUID EXTRACTION
LOU TEMP THERMAL STRIPPING
NEUTRALIZATION
OZONATION
REVERSE OSMOSIS
SOIL UASHING
SOLVENT RECOVERY
STABILIZATION/SOLIDIFICATION
STRIPPING
VITRIFICATION
ACTIVATED SLUDGE
CHEMICAL EXTRACTION
CHEMICAL PRECIPITATION
CHEMICAL TREATMENT
CHLORINATION
ELECTROOIALYSIS
INCINERATION
ION EXCHANGE
LOU TEMP THERMAL STRIPPING
NEUTRALIZATION
OZONATION
REVERSE OSMOSIS
STRIPPING
ACTIVATED SLUDGE
AEROBIC BIOLOGICAL
ANAEROBIC BIOLOGICAL
BIODEGRADATION-COMPOST ING
BIODEGRADATION-SLURRY PHASE
BIODEGRADATION-SOLID PHASE
IN SITU BIODEGRADATION
BI ODEGRADATION-COMPOST ING
CHEMICAL TREATMENT
CHLORINATION
ACTIVATED CARBON
ACTIVATED SLUDGE
BIODEGRADATION-NOS
CHEMICAL OXIDATION
CHEMICAL PRECIPITATION
CHEMICAL REDUCTION
IN SITU BIODEGRADATION
IN SITU SOIL FLUSHING
REVERSE OSMOSIS
SOIL UASHING
STRIPPING
BIODEGRADATION-NOS
CHEMICAL PRECIPITATION
CHEMICAL TREATMENT
NEUTRALIZATION
INCINERATION
                                                 291

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CONTAMINANT GROUP
                                TABLE # 4 (CONTINUED)

                                   COMPANY NAME
       TREATMENT TECHNOLOGY
NOT SPECIFIED
                            HAZANSWERS, INC.
                            HAZCON ENGINEERING, INC.
                            IT CORPORATION
                            JACOBS ENGINEERING GROUP, INC.
                            MAECORP, INC.
                            MAECORP, INC.
                            MAECORP, INC.
                            MAECORP, INC.
                            MAECORP, INC.
                            MAECORP, INC.
                            MAECORP, INC.
                            MCNAMEE ADVANCED TECHNOLOGY, INC.
                            MCNAMEE ADVANCED TECHNOLOGY, INC.
                            MCNAMEE ADVANCED TECHNOLOGY, INC.
                            NATIONAL SANITATION FOUNDATION
                            NATIONAL SANITATION FOUNDATION
                            O'BRIEN AND GERE ENGINEERS, INC.
                            POLYBAC CORPORATION
                            RMT, INC.
                            RMT, INC.
                            RMT, INC.
                            RMT, INC.
                            RMT, INC.
                            RMT, INC.
                            UNITED STATES TESTING COMPANY, INC.
                            UNITED STATES TESTING COMPANY, INC.
                            UNITED STATES TESTING COMPANY, INC.
                            UNITED STATES TESTING COMPANY, INC.
                            WESTERN RESEARCH INSTITUTE
                            WESTERN RESEARCH INSTITUTE
                            WOODWARD CLYDE CONSULTANTS
                            WOODWARD CLYDE CONSULTANTS
                            WOODWARD CLYDE CONSULTANTS
                            WOODWARD CLYDE CONSULTANTS
                            WOODWARD CLYDE CONSULTANTS
                            WOODWARD CLYDE CONSULTANTS
                            WOODWARD CLYDE CONSULTANTS
                            WOODWARD CLYDE CONSULTANTS
                            WOODWARD CLYDE CONSULTANTS
                            WOODWARD CLYDE CONSULTANTS
                            WOODWARD CLYDE CONSULTANTS
                            WOODWARD CLYDE CONSULTANTS
                            WOODWARD CLYDE CONSULTANTS
                            WOODWARD CLYDE CONSULTANTS
                            WOODWARD CLYDE CONSULTANTS
                            WOODWARD CLYDE CONSULTANTS
                            YEC  INC
                            YEC  INC
                            YEC  INC
                            YEC  INC
                            YEC  INC
                            YEC  INC
                            YEC  INC
STABILIZATION
STABILIZATION/SOLIDIFICATION
CRYSTALLIZATION
INCINERATION
CATALYSIS
CHEMICAL REDUCTION
CHLORINATION
FILTRATION
NEUTRALIZATION
SEDIMENTATION
VITRIFICATION
DEWATERING
FILTRATION
REVERSE OSMOSIS
ACTIVATED CARBON
STRIPPING
MIXED MEDIA FILTRATION
IN SITU BIODEGRADAT10N
BIODEGRADATION-COMPOST ING
BIODEGRADATION-SOLID PHASE
CRYSTALLIZATION
IN SITU BIODEGRADATION
ULTRAFILTRATION
VITRIFICATION
ACTIVATED SLUDGE
ANAEROBIC BIOLOGICAL
BIODEGRADATION-COMPOSTING
BIODEGRADATION-NOS
EMULSION REMOVAL
EVAPORATION
ADSORPTION
AEROBIC BIOLOGICAL
BIODEGRADATION-SLURRY PHASE
CATALYSIS
CHEMICAL OXIDATION
CHEMICAL PRECIPITATION
CHEMICAL REDUCTION
IN SITU BIODEGRADATION
IN SITU VACUUM & STEAM EXTRACT
INCINERATION
ION EXCHANGE
NEUTRALIZATION
SOIL WASHING
SOLVENT RECOVERY
STABILIZATION/SOLIDIFICATION
STRIPPING
ACTIVATED CARBON
ADSORPTION
ADSORPTION
AEROBIC BIOLOGICAL
ANAEROBIC BIOLOGICAL
CHEMICAL OXIDATION
CHEMICAL PRECIPITATION
                                                 292

-------
CONTAMINANT GROUP
                                TABLE # 4 (CONTINUED)

                                   COMPANY NAME
       TREATMENT TECHNOLOGY
NOT SPECIFIED
                            YEC INC
                            YEC INC
                            YEC INC
                            YEC INC
                            YEC INC
                            YEC INC
                            YEC INC
                            YEC INC
                            YEC INC
                            YEC INC
                            ZENON ENVIRONMENTAL
                            ZIMPRO PASSAVANT
CHEMICAL TREATMENT
CHLORINATION
COAGULATION/FLOCCULATION
DISSOLVED AIR FLOTATION
IN SITU BIODEGRADATION
ION EXCHANGE
NEUTRALIZATION
OZONATION
STABILIZATION/SOLIDIFICATION
STRIPPING
CHLORINATION
OEUATERING
                                                   293

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    COMPANY  NAME
                  TABLE # 5: TREATABILITY STUDY VENDORS

    STREET ADDRESS                CITY                STATE ZIP CODE  PHONE NUMBER
                                                                                                                                  CONTACT
AAA CSI
AEA TECHNOLOGY
ANDCO ENVIRONMENTAL  PROCESSES,  INC.
APPLIED REMEDIATION  TECHNOLOGY,  INC
APPLIED SURFACE  TECHNOLOGY
AWC INCORPORATED
BIO-RECOVERY SYSTEMS,  INC.
BIOSCIENCE MANAGEMENT,  INC.
BIOTROL,  INC.
C-E ENVIRONMENTAL,  INC.
C-EE BIOREMEDIATION  SYSTEMS
CAMBRIDGE SCIENTIFIC,  INC.
CHEMENCO, INC.
CHEMFIX ENVIRONMENTAL  SERVICES
CYTO CULTURE ENVIRON.  BIOTECH.
DETOX, INC.
DIVERSIFIED ENGINEERING,  INC.
E M & C ENGINEERING  ASSOCIATES
EARTH TECHNOLOGY CORP.
ENERGY&ENVIRONMENTAL RESEARCH CORP.
ENRECO TECHNOLOGIES  GROUP
ENSOTECH, INC.
ENSR - CELGENE
ENVIRONMENTAL REMEDIATION, INC.
ENVIRONMENTAL RESOURCE ASSOCIATES
ENVIRONMENTAL TECHNOLOGY SOUTHEAST
ENVIROSAFE TECHNOLOGIES, INC.
ENVIROTECH MID-ATLANTIC
ENWRIGHT ENVIRONMENTAL, INC.
FORMULA ENVIRONMENTAL COMPANY
FRANCIS A. MCLOUGHLIN
FREEZE TECHNOLOGIES  CORPORATION
GENERAL PHYSICS  CORPORATION
GROUNDWATER & ENVIRONMENTAL SERVICE
HARMON ENVIRONMENTAL SERVICES, INC.
HAZANSWERS,  INC.
P.O. BOX 5067
HARWELL LABORATORY
595 COMMERCE DRIVE
273 FRANKLIN ROAD
957-R INDUSTRIAL ROAD
4335 W TROPICANA
P.O. BOX 3982
1530 VALLEY CTR PKWY/120
11 PEAVEY ROAD
261 COMMERCIAL/BOX 7050
107 AUDUBON ROAD/STE. 25
195 COMMON STREET
5736 N TRYON ST
2424 EDENBORN AVE, # 620
124 WASHINGTON AVENUE
561 CONGRESS PARK DRIVE
7600 GEORGIA AVE., NW
1665 SCENIC AVE., STE 104
100 W. BROADWAY/STE. 5000
18 MASON
PO BOX 9838
7949 AJAY DRIVE
3000 RICHMOND AVE
P.O. BOX 45212-210
144 BIGNALL STREET
900 N. UNIVERSITY, STE.50
P.O. BOX 833
1861 PRATT DRIVE
P.O. BOX 17467
1306 N.W. MIRAGE #K301
P.O. BOX 182
2539-C TIMBERLAKE
6700 ALEXANDER BELL DRIVE
PEMBROKE ONE BLDG/STE.320
2066 WEST PARK PLACE
2300 N.  YELLOWSTONE
NOVATO
OXFORDSHIRE, UK
AMHERST
RANDOLPH
SAN CARLOS
LAS VEGAS
LAS CRUCES
BETHLEHEM
CHASKA
PORTLAND
WAKEFIELD
BELMONT
CHARLOTTE
METAIRIE
PORT WASHINGTON
DAYTON
WASHINGTON
COSTA MESA
LONG BEACH
IRVINE
AMARILLO
SUN VALLEY
HOUSTON
BATON ROUGE
WARWICK
JACKSONVILLE
VALLEY FORGE
BLACKSBURG
GREENVILLE
SILVERDALE
WELLESLY HILLS
RALEIGH
COLUMBIA
VIRGINIA BEACH
STONE MOUNTAIN
IDAHO FALLS
CA  94948
    OX110RA
NY  14150
NJ  07869
CA  94070
NV  89103
NM  88003
PA  18017
MN  55318
ME  04112
MA  01880
MA  02178
NC  28213
LA  70001
CA  94801
OH  45459
DC  20012-1616
CA  92626
CA  90802-5785
CA  92718
TX  79105-9838
CA  91352
TX  77098
LA  70895
RI  02888
FL  32211
PA  19482-0833
VA  24060
SC  26606
WA  98383-0341
MA  02181
NC  27629-0968
MD  21046
VA  23450
GA  30087
ID  83401
415-883-6380
0235-24141
716-691-2100
201-361-8840
415-594-9797
702-871-7733
505-646-5888
215-974-9693
612-448-2515
207-775-5401
617-245-6606
617-484-3184
704-596-4844
800-992-3443
415-233-6660
513-433-7394
202-726-7676
714-957-6429
213-495-4449
714-859-8851
806-379-6424
818-767-2222
713-520-9900
504-291-4440
401-781-7422
800-334-7456
215-962-0800
703-362-9661
803-235-0707
206-698-1905
617-237-5262
919-850-0600
301-290-2300
804-490-4653
404-469-3077
208-522-5526
G.F. KRONEBERGER
L.R. FELLINGHAM
GARY A. PECK
WERNER STEINER
S. MOGHADDAM
TERRY WENSTRAND
DENNIS DARNALL
T.G. ZITRIDES
DALE PFLUG
AVI JIT DASGUPTA, PhD
SAMUEL FOGEL
DONALD WISE
WILLIAM KLOTZ
PHILLIP N. BALDWIN,  JR.
RANDALL VON WEDEL
DIANE KROPLIN
M.THOMAS/R.TADAVARTHY
MOHAMED I. ELGAFI
KANDIAH ARULMOLI
RANDY SEEKER
DWIGHT M. RUETER
DR. INDERJIT H. SUBHERWAL
JAMES B. WORTHINGTON
JOHN CHRISTIANSEN
ALVIN SNYDER
H.W. COX, JR.
ROBERT A. WEST
S. DOBORAH OYLER
ED WANNEMACHER
PAUL LAUTERBACH
FRANCIS A. MCLOUGHLIN
JAMES HEIST
DESMOND W. CHAN
S. KUMAR
MARK SNEARON
MILO LARSEN

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     COMPANY  NAME
                                                           TABLE # 5  (CONTINUED)

                                         STREET  ADDRESS                CITY
                                                                                          STATE ZIP CODE  PHONE NUMBER
                                                                                                                                 CONTACT
 HAZCON  ENGINEERING,  INC.
 HUNTER  BIOSCIENCES,  INC.
 HUNTER  SERVICES,  INC.
 I IT  RESEARCH  INST
 INTERNATIONAL PROCESS RESEARCH  CORP
 IT CORPORATION
 JACOBS  ENGINEERING GROUP,  INC.
 KEYSTONE ENVIRONMENTAL RESOURCES
 KIBER ASSOCIATES, INC.
 KSE, INC.
 MAECORP, INC.
 MARINE  POLUTION CONTROL
 MCNAMEE ADVANCED TECHNOLOGY,  INC.
 MEMBRANE TECHNOLOGY & RESEARCH, INC
 MIDWEST RESEARCH INSTITUTE
 NATIONAL SANITATION FOUNDATION
 O'BRIEN AND GERE ENGINEERS, INC.
 OGDEN ENVIRONMENTAL SERVICES, INC.
 OHM CORPORATION
 OHM CORPORATION/SPAR
 PEI ASSOCIATES, INC.
 PETROLEUM TESTING SERVICE, INC.
 PITTSBURGH MIN&ENV.TECH.,  INC.
 PLASMA HOLDINGS, N.V.
 POLYBAC CORPORATION
 PROCEDYNE CORPORATION
 PYROGENICS, INC.
 QUALTEC, INC.
 RADIAN CORPORATION
 REMEDIATION TECHNOLOGIES
 RIVER OAK ASSOCIATES
 RMC ENV & ANALYTICAL LABORATORIES
RMT, INC.
RNK ENVIRONMENTAL, INC.
RODNEY KINNEY ASSOCIATES
ROY f.  WESTON, INC.
S-CUBED
P.O. BOX 1274
3208 SPRING FOREST ROAD
P.O. BOX 1703
10 WEST 35TH ST
5906 MCINTYRE STREET
304 DIRECTORS DRIVE
1234 NATIONAL PRESS BLDG.
3000 TECH CENTER DRIVE
4000 DEKALB TECH.PKWY, NE
P.O. BOX 368
155 NO. WACKER DR..STE400
8631 WEST JEFFERSON
3135 S STATE ST/SUITE 301
1360 WILLOW RD/SUITE 103
425 VOLKER BLVD
3475 PLYMOUTH RD.
P. 0. BOX 4873
P. 0. BOX 4873
P. 0. BOX 551
P. 0. BOX 4873
11499 CHESTER ROAD
12051 RIVIERA ROAD
390 FRANKFORT ROAD
P.O. BOX 14055
954 MARION BLVD.
11 INDUSTRIAL DRIVE
2424 BRIDGE AVE
11300 US HWY #1,SUITE 500
8501 MO PAC BLVD.
22419 72ND AVE S
C/0 ESC INC.,P.O. BOX 366
214 WEST MAIN PLAZA
744 HEARTLAND TRAIL
P.O. BOX 17325
P.O. BOX 1102
WESTON WAY
P.O. BOX 1620
BROOKSHIRE
RALEIGH
GAINESVILLE
CHICAGO
GOLGEN
KNOXVILLE
WASHINGTON
MONROEVILLE
ATLANTA
AMHERST
CHICAGO
DETROIT
ANN ARBOR
MENLO PARK
KANSAS CITY
ANN ARBOR
SYRACUSE
SAN DIEGO
FINOLAY
FAIRFIELD
CINCINNATI
SANTA FE SPRINGS
MONACA
MINNEAPOLIS
ALLENTOWN
NEW BRUNSWICK
POINT PLEASANT
PALM BEACH GARDENS
AUSTIN
KENT
WINFIELD
WEST PLAINS
MADISON
COVINGTON
EAGLE RIVER
WEST CHESTER
LA JOLLA
 TX  77422      800-227-6543    RAY  FUNDERBURK
 NC  27604      919-872-9686    MIKE WILLIAMS
 FL  32602-1703 904-332-3318    PAUL J. FAVARA
 IL  60616-3799 312-567-4255    R.H. SNOW
 CO  80403      303-279-2581    CULLY MARSHALL
 TN  37923      615-690-3211    RICHARD MILLER
 DC  20045      202-783-1560    MR. RAMESH MARAJ
 PA  15146      412-825-9600    RICHARD DeCEASAR, PhD
 GA  30340      404-455-3944    NEVILLE W. KINGHAM
 MA  01004      413-549-5506    DR. CHARLES W. QUINLAN
 IL  60606      312-372-3300    JAMES MILLER
 MI  48209      800-521-8232    MICHAEL E. SNYDER
 MI  48108      313-665-5553    DR. JOH KANG
 CA  94025      415-328-2228    VICKI SIMMONS
 MO  64110      816-753-7600    BRUCE A. BOOMER
 MI  48106      313-769-8010    MARC ANDERSON
 NY  13221      315-437-6100    STEVEN CARVER
 CA  92121      315-437-6100    ROBERT C. HANEY
 OH  45839-0551 419-423-3526    SAM INSALACO
 OH  45014-9118 513-860-2020    JOHN HOGAN
 OH  45246      513-782-4700    M. AROZARENA
 CA  90670-2289 213-698-0081    MICHAEL D. MITCHELL
 PA  15061      412-774-4900    WILLIAM F. SUTTON
 MN  55414      612-625-0775    J.K.TYLKO-FRAN.MCLOUGHLIN
 PA  18103      800-523-9385    JOHN VINSON FORSYTH
 NJ  08901      201-249-8347    JOHN R. WHYTE, JR.
 NJ  08742      201-295-0800    DR. J. MICHAEL BURKE
 FL  33408      800-247-9871    R.A. "PETE" DRAKE
 TX  78720-1088 512-454-4797    DOROTHY A. STEWART
 WA  98032      206-872-0247    HANS P. STROO
 IL  60190      312-231-7915    ROBERT L. HARKINS
MO  65775      417-256-1101    DR. R. SOUNDARARAJAN
WI  53717-1934 608-831-4444    PAUL KNOPP/MICHAEL HENSON
 KY  41017      606-344-0966    DAVID NUTINI
AK  99577      907-694-2332    RODNEY KINNEY, SR.
 PA  19380      215-692-3030    M. RAMANATHAN
CA  92038-1620 619-453-0060    GREG SWANSON

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