United States        Office of
          Environmental Protection   Emergency and
          Agency          Remedial Response
EPA/ROD/R08-93/078
January 1993
£EPA   Superfund
         Record of Decision:
          Rocky Mountain Arsenal

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 REPORT DOCUMENTATION  T 1. REPORT NO.      2.     3. Reclplenr. Aco8881on No.  
   PAGE      EPA/ROD/R08-93/078                
4. Title and Subtitle                    5. R.poI1 Data    
 SUPERFUND RECORD OF DECISION              01/15/93  
 Rocky Mountain Arsenal (Operable Unit 28), CO      6.        
 Tenth Remedial Action                       
7. Autho,(.)                      8. Performing Organization Rept. NO'
9. Performing Organization Name and Addr-             10 Project T..klWork Unit No.  
                         11. Contract(C) or Grant(O) No.  
                         (C)        
                         (0)        
12. Sponsoring Organization Name and Add~             13. Type 0' Report .. Period eovefad 
 U.S. Environmental Protection Agency                 
 401 M Street, S.W.                800/800    
 Washington, D.C. 20460             14.        
15. Supplementary Note.                            
      PB94-964410                   
16. Abstract (Limit: 200 worela)                          
 The Rocky Mountain Arsenal (Operable Unit 28) site is part of the 17,000-acre former 
 U.S. Army chemical warfare and incendiary munitions manufacturing and assembly plant in
 Adams County, Colorado. From the 1950s until late 1969, the Army used the Rocky  
 Mountain Arsenal (RMA) facility to produce the nerve agent GB (isopropylmethyl-  
 phosphonofluoridate). Between 1947 and 1982, private industries leased major portions
 of the plant facilities to manufacture various insecticides and herbicides. Since  
 1970, Army facility operations primarily have involved the destru~tion of chemical  
 warfare materials. Because final remediation of the RMA site will take many years to 
 complete, 13 interim response actions (IRAs) were determined necessary prior to  
 implementing the final ROD. OU28 , which is one of these 13 IRAs, contains warehouses 
 containing investigation-derived and activity-derived waste that has been or will be 
 placed in storage areas at the RMA. In 1984, waste storage was initiated at the RMA in
 support of onsite investigative and remedial activities.  Waste streams generated and 
 stored onsite included CERCLA investigation-derived waste, including soil, liquids,  
 personal protective equipment (PPE), laboratory waste, trash, contaminated debris, and
 miscellaneous drummed solids; and activity-derived waste, including utility system  
 (See Attached Page)                       
17. Document Analyal. a. Dncrlptora                     
 Record of Decision - Rocky Mountain Arsenal (Operable Unit  28), CO      
 Tenth Remedial Action                       
 Contaminated Media: soil, debris                   
 Key Contaminants: VOCs (benzene, PCE, TCE, toluene, xylenes), other organics  
        (pesticides), metals (arsenic, chromium,  lead), other inorganics. 
 b. Id.ntlfleralOpen-End8cf T.rm.                       
 c. COSATI FI.lcUOroup                          
16. Availability Statement               19. S8curlty CI... (ThIs R.port)  21. No.o'Pag..  
                       None      53  
                    20. Security Class (ThIs Pag.)  22. Price  
                       None         
50272-101
(SH ANSI-Z39.18)
SHlnstrucUons on RevlH88
OPTIONAL FORM Z72 (4-77)
(Formerly NTIS-$)

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EPA/ROD/R08-93/078
Rocky Mountain Arsenal (Operable Unit 28), CO
Tenth Remedial Action
Abstract (Continued)
waste, sewage treatment plant waste, facility maintenance shop waste, motor pool waste,
laboratory waste, found-on-post waste, and waste derived from other remedial actions at
the facility. This ROD addresses the investigation- and activity-derived waste. stored in
warehouses at the RMA and will facilitate the final remedy for this waste and additional
waste generated as a result of CERCLA activities. The primary contaminants of concern
affecting the soil and debris are VOCs, including benzene, PCE, TCE, toluene; and xylenes;
other organics, including pesticides; metals, including arsenic, chromium, and lead; and
other inorganics.
The selected remedial action for this site includes continuing long-term storage of
contaminated waste onsite; treating any waste soil which contains liquids onsite using
stabilization; disposing of the treated soil, PPE, contaminated debris, miscellaneous
solids, found on-post waste, and laboratory waste in a RCRA Subtitle C landfill offsite;
reclaiming the motor pool waste offsite; blending the solvents and used oil waste into
fuel; or incinerating the waste offsite. The lead agency will indicate the selected
management alternative(s) in an Implementation Letter(s). There are no present worth or
O&M costs provided for this remedial action.
PERFORMANCE STANDARDS OR GOALS:

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.'
January 15, 1993
DEPARTMENT OF THE ARMY
PROGRAM MANAGER FOR ROCKY MOUNTAIN ARSENAL
COMMERCE cm. COLORADO 80022.2180
REPLY TO
AT'l"ThTION OF:
Remedial Operations Branch
i I
r-:-d .
! /z.-.!~'J
~ -~ ~
Mr. Connally Mears
U.S. Environmental Protection Agency
Region VIII
Mail Code 8HWM-FF
999-18th Street, Suite 500
Denver, Colorado 80202-2466
Dear Mr. Mears:
Enclosed is a copy of the Final Decision Document for Element One of the
CERCLA Hazardous Wastes Interim Response Action. oU ~e

No organization invoked dispute regarding this th>clbffient. We did, however,
correct typographical errors on Table 4-1 (page 4-3) anJ Table 7-1 (page 7-4).
Therefore, we are enclosing a revised copy.
Our point of contact on this matter is Mr. Larry DeCet at (303) 289-0124.
Sincerely,
~~~
Charles T. Scharmann
RMA Committee Coordinator
Enclosure
. -

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"
Copies Furnished:
Captain Jonathan Potter, Litigation Attorney, Rocky Mountain AIsenal
Building 111, Commerce City, Colorado 80022 (w/enel) ~ ~--_-.
Mr, Bradley Bridgewater, U.S. Department of Justice, 999-18th Street,
Suite 501, North Tower, Denver, Colorado 80202 (w/enel)
Mr. Sheldon Muller, Assistant Regional Counsel, U.S. Environmental
Protection Agency, One Denver Place, Suite 500, 999- 18th Street,
Denver, Colorado 80202-2405
Mr. Gene Czyzewski, CDM Federal Programs Corporation, 1626 Cole Boulevard,
Suite 100, Golden, Colorado 80401 (w/enel)
Document Tracking Center, AMXRM-IDT, Room 132, Building 111, Rocky
Mountain Arsenal, Commerce City, Colorado 80022 (w/enel)

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.,' - COMMITTED T~ PROTECTION OFTHE ENVIRONMENT~
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Ymal DecisioD 'DocuDient -.
for ElemeDt'One of .
the CERCLA Hazardous Wastes
, '. ,.Interim ResponSe ActioD
at the ROcky MOUDtaiD ArseDaI
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Document CODtrol Number ~l-09-AALE
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ROY F. WESTON, ~NC.
215 Union Boulevard, Suite 550
'Lak8wood, '~olorado 80228:
it' i 0 1993
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"
F"mal Dec~ion Document
for Element One of
the CERCLA Hazardous Wastes
Interim Response Action.
at the Rocky Mountain Arsenal
. Document Control Number S300-01-09-AALE
December 1992
Contract No. DAAA 1S-88-D-0023
Prepared for: .
U.S. Army Program Manager
for Rocky Mountain Arsenal
Prepared by:
Roy F. Weston, Inc.
215 Union Boulevard
Suite 550
Lakewood, Colorado 80228
THE VIEWS, OPINIONS, AND/OR FINDINGS CONTAINED IN nus REPORT ARE THOSE Of THE
AUTHOR(S) AND SHOUlD NOT BE CONSTRUED AS AN OFfICIAL DEPARTMENT OF THE ARMY
POsmON, POUCY, OR DECISION, UNLESS SO DESIGNATED BY OTHER DOCUMENTATION.
Ii:
THE USE OF TRADE NAMES IN THIS REPORT DOES NOT CONSTITUTE AN OFFICIAL ENDORSEMENT
OR APPROVAL OF THE USE OF SUCH COMMERCIAL PRODUCTS. THIS REPORT MAY NOT BE CITED

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"
Section
TABLE OF CONTENTS
Title
Pa2e
1
IN'1'RODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
2
BACKGROUN'D . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
3
INTERIM RESPONSE ACTION OBJECTIVES. . . . . . . . . . . . . . . . . . 3-1

INTERIM RESPONSE ACTION ALTERNATIVES. . . . . . . . . . . . . . .. 4-1
4.1 Long-Term Storage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
4.2 On-Site Treatment/Stabilization. . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
4.3 Off-Site Land Disposal (Subtitle C) ....................... 4-1
4.4 Off-Site Incineration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4
4.5 Off-Site Reclamation. . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . 4-4
4.6 Off-Site Fuels Blending. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4
4'
5
CllR.ONOLOGY OF EVENTS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
6
IR.A PROCESS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1
7
APPLICABLE OR RELEVANT AND APPROPRIATE REQUIREMENTS . 7-1
.7.1
Chemical-Specific ARARs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1
7.1.1 On-Site Storage Alternative ......................,.7-2
7.1.2 On-Site Treatment/Stabilization Alternative. . . . . . . . . . . . . . 7-2
Location-Specific ARARs ............................. 7-2
Activity-Specific ARARs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-6
7.3.1 On-Site Storage Alternative. . . . . . . . . . . . . . . . . . . . . . . . 7-6
7.3.2 On-Site Treatment/Stabilization Alternative. . . . . . . . . . . . . . 7-7
7.2
7.3
8
CONSISTENCY WITH mE FINAL RESPONSE ACTION. . . . . . . . . .. 8-1
9
RESPONSE TO COl\tMENTS FROM DRAFT DOCUMENT. . . . . . . . . . 9-1
APPENDIX I - CHEMICAL SPECIFIC ARARs FOR mE CERCLA W ASTEW A TER
.TREA TMENT SYSTEM INTERIM RESPONSE
Filial Da:iaiall Docuaxat for ec-.n ODe allhe CERClA Uquid W- - IDIerim RCIpODIC Actiall
Rocky MOUDIaiD Ancul - 00cumea1 CaaIrOI No. S~I.()9.AA1.E
nDl9\rq>OI1I\aaIe _dol. in
Dcccmbcr 1992

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TABLE OF CONTENTS (Continued)
LIST OF TABLES
"
Table No.
Title
Pa2e No.
4-1
Potential Waste Management Alternatives. . . . . . . . . . . . . . . . . . . 4-2
7-1
RMA Contaminants of Concern. . . . . . . . . . . . . . . . . . . . . . . . . . 7-3
7-2
Potential Action-Specific ARARS for the On-Site
Treatment/Stabilization Alternative. . . . . . . . . . . . . . . . . . . . . . . . 7-9
FiDaI DeciaicD Documad for EkaxDt ODe ol!be CERClA Liquid w- - IIIICrim RC8fIOI* A~
Rocky MauaIaiD A~ - Doc- CGIIII'OI No. S300.0I-09-AALE
rma9\rcporU\aaIe - cId.in
Dcccmbcr 1992

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,"
SECTION 1
INTRODUCTION
This Decision Document outlines management alternatives and mechanisms to coordinate
disposal options for hazardous wastes generated at the Rocky Mountain Arsenal (RMA) as a
result of Comprehensive Environmental Response, Compensation and Liability Act (CERCLA)
activities. This Decision Document, however, does not select a specific disposal decision for
the waste generated and managed at RMA. Instead, six potential waste management alternatives
have been identified for all the waste streams generated at RMA. Upon approval of this
Decision Document, a subsequent Implementation Letter(s) will be submitted for each waste
disposal action, selecting one (or more) of the appro
Document.
Section 2 of this Decision Document provides a b
Wastes Interim Response Action (IRA) currently
expansion which consists of three additional elemeJ
Element One of this IRA expansion; Section 4 identi
to the disposal of waste streams identified in Elem
chronological events that provides historical backgJ
and the IRA process for Element One is identified ir
or relevant and appropriate requirements (ARAR:
discusses how Element One of this IRA is consiste
C. ERt.L..~ "II-~~~~
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Filial DccisiaD DocwDeat ror EkmaI1 ODe of !be CERC1J. Liquid Walla - bIIcrim Reapouc ActiaD
Rocky M-m A.-I - Documeat Coau'oI No. S3QO.01-09-MLE
rma9\rqoorU\aale - cId.in
Dccaaber 1992

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SECTION 2
BACKGROUND
'.
The "Pretreatment of CERCLA Liquid Wastes IRA" is being conducted as part of the IRA
Process for RMA in accordance with the June 5, 1987, report to the court in United States
versus Shell Oil Co., the proposed Modified Consent Decree dated June 7, 1988, and the
Federal Facility Agreement dated February 17, 1989.
After the alternatives were reviewed according to the criteria listed in the above referenced
documents, a new wastewater treatment system was chosen as the best solution for this IRA.
Implementation of this IRA began in August 1991, and the new wastewater treatment system has
been constructed. On January 14, 1992, RMA submitted a Technical Study to U.S.
Environmental Protection Agency (EPA) Region VITI for an expansion of the CERCLA Liquid
Wastes IRA. The Technical Study proposed to amend the "Pretreatment of CERCLA Liquid
Wastes IRA" of the Federal Facility Agreement to encompass a broader range of waste streams
and waste management activities for both on-post and off-post operable units. The expansion
has three elements:
.
Element One - Management options for disposal and/or treatment of hazardous
waste that has been or will be placed in storage areas at RMA, and which have
not been addressed in another IRA. Waste streams include: RIfFS wastes; IRA
wastes; miscellaneous waste from vehicle, grounds, and building maintenance;
and items found on post each of which may contain hazardous waste properties.
.
Element Two - Approval of management options relating to remediation of
selected equipment and sites contaminated with polychlorinated biphenyl (PCB)
wastes. These wastes primarily consist of contaminated equipment, soil, and
building rubble.
.
Element Three - Selection and approval of an on-site facility for managing solids
that are bulk hazardous wastes.
This Decision Document addresses only Element One.
FiaaJ DociUaD DocuaICIII for ae-at Cae al\be CERC1J\ Liquid W- - bIImm Rapaax AeliaD
Roc:ty MauaIIIio A~ - Doc....- CaaIrOl No. S300.0I.09-AALE
rma9\rqtOI'Ia\aale - doI.in
Da:mIbcr 1992

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.'
SECTION 3
INTERIM RESPONSE ACTION OBJECTIVES
The overall objectives of IRAs are to select alternatives: that are protective of human health and
the environment; that are cost effective; that are timely; that, to the maximum extent practicable,
are consistent with and contribute to the effective performance of Final Response Actions; that
to the maximum extent practicable, attain ARARs; and that are compatible to the maximum
extent practicable with final remediation decisions in the Records of Decision (ROD).
. The objective of Element One of this IRA expansion is to develop and implement management
options for a mechanism to coordinate waste handling efforts prior to the disposal and/or
treatment of investigation-derived wastes and activity-derived wastes that have been or will be
placed into storage areas on RMA. The potentially hazardous waste streams addressed in this
Decision Document are categorized below based on various CERCLA activities conducted on
site:
.
CERCLA Investigation-Derived Wastes
Soils
Liquid Wastes
Personal Protective Equipment (PPE)
Laboratory Wastes
Trash
Contaminated Debris
Miscellaneous Drummed Solids
Utility System Wastes
Sewage Treatment Plant Wastes
Facility Maintenance Shop Wastes
Motor Pool Wastes
Laboratory Wastes
Found On-Post Wastes
Wastes Derived from IRA Activities
.
.
.
.
.
.
.
FiDaI DcciIiaD ~ for EJcmea1 ODe ollbc CERCUo Liquid WUICI - IDt.crim ReIpoDK ACIioa
Rocky MouDIaiD AncD8l - Dac.- CoauoI No. 5~I~AALE .
rma9\I'qIOI1a\aale - dd.inI .
December 1992

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SECTION 4
INTERIM RESPONSE ACTION ALTERNA TIVFS
'.
Potential alternatives have been identified for this IRA based upon the treatment and disposal
options that are available for the various waste streams that were identified in Section 3. The
potential alternatives for each waste stream are discussed below and summarized in Table 4-1.
This discussion is abbreviated because these alternatives constitute routine management and
disposal options common to widespread industry practices in compliance with the Resource
Conservation and Recovery Act (RCRA).
4.1
Lon!!- Tenn Stora,e
'Most of the waste types identified in Section 3 are presently stored at RMA awaiting final
disposal. Continued long-term, on-site storage is a management option for these and other
hazardous wastes until a final treatment or disposal alterative is identified. These wastes must
be stored in compliance with the substantive requirements of RCRA and other state and federal
laws and regulations, and only additional more stringent state hazardous waste requirements.
4.2
On-Site Treatment/Stabilization
On-site treatment and on-site stabilization are alternatives for soils containing free liquids that
may be generated at RMA. This includes 1727 sump sludges, Sewage Treatment Plant sludges,
and drummed soils from remedial investigation/feasibility study (RI/FS) activities. Depending
upon the final disposition of the material, stabilization may be an appropriate on-site treatment
technology.
4.3
Off-Site Land DisDosal (Subtitle a
CERCLA i 121 (d)(3) requires that hazardous substances, pollutants, or contaminants transferred
off site for treatment, storage, or disposal during a CERCLA response action be transferred to
a facility operating in compliance with Sections 3004 and 3005 of RCRA and other applicable
laws and regulations. The EPA has issued an off-site policy, OSWER Directive 9834.11,
Fmal Dcciaiaa DaaImaIi for EkmcaI ODe cltlle CERcu. Liquid w- - IDtaim ItcIpcmc Actiaa
Racty MouaIaiD A~ - DocumoaS CoaIroINo. S~I~AAU!
rma9\Jq>oru\aale - dd. in
Decc:mber 1992

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Table 4-1
Potential Waste Management Alternatives
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  Options      
   Long-Term Storage On-Site Off-Site  Off-Site. 
   until ROD Treatmentl Subtitle C Off-Site Fuels Off-Site
Wastes   Implemented Stabilization Disposal Reclamation Blending Incineration
CERCLA In'. - Deri,ed Waste X X X   
Soil   X X (wet soils) X   
Liquid Wastes   X    
PPE   X  X   
Laboratory Wastes  X X X   
Trash   X  X   
Contaminated Debris  X  X   
Misc. Drummed Solids  X  X   
CERCLA SUDDOrt Acti,ities  X X   
Utility Systems   X X   
 e.g., Paint  X X   
Sewage Treatment Plant  X X   
 e.g., Spent Carbon  X X X  
  Filters  X X   
Facility Maint. Shop   X X   
 e.g., Floor Sweepings  X X   
  Paint Waste  X X   

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Table 4-1 (Continued)
Potential Waste Management Alternatives
 Options      
  Long-Tenn Storage On-Site orf-Site  Off-Site. 
  until ROD Treatmentl Subtitle C orf-Site Fuels Off-Site
Wastes  Implemented Stabilization Disposal ReClamation Blending Incineration
Motor Pool    X X X 
e.g., Waste Oil    X X 
 Antifreeze    X  
 Batteries   X X  
 Sump Sludge   X   
Laboratories  X  X X  X
e.g., Solvents X  X X  X
 Standards X  X X  X
 Sample Residuals X  X X  X
Found On-Post  X X X  X 
Wastes Derived from IRA Activities  X X X  
e.g., 1721 Sump Sludges  X X   
 SPDA Wastes  X X   
 Groundwater Treatment      
 System Wastes  X X X  
8Trash8 is defined to be normally disposable used products generated during field activities and may include wastes associated with field activities as well as
decontamination efforts, like visqueen, paper towels, wrappers, etc.
8Contaminated debris8 is generated during field activities and includes large items that are not usually disposable but are broken or no longer serviceable, like abandoned
well casings, PVC piping, cement, etc.
8Drummed solids8 is defined to include contaminated metal and contaminated sorption material.
8Found on-post8 are those waste materials that were not associated with any specific operation or clean-up activity at RMA but were 8found8 on-post and were labeled
as such. .

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"
describing procedures that should be observed when a CERCLA response action involves off-site
storage, treatment, or disposal of CERCLA waste. The purpose of this policy is to avoid having
CERCLA wastes contribute to p~esent or future environmental problems by directing these
wastes to facilities that are environmentally sound.
The off-site disposal of soils, PPE, laboratory wastes, contaminated debris, miscellaneous solids,
and found on-post wastes may occur by transferring the waste to a hazardous waste Subtitle C
RCRA facility. The Implementation Letters for the waste management actions will determine
where these wastes will be disposed.
4.4
Off-Site Reclamation
Off-site reclamation is an alternative for certain wastes generated as a result of facility
maintenance and those activities associated with the Motor Pool at RMA. Wastes from these
areas could include spent batteries, solvents, and used oils that may be reclaimed off site. Since
reclamation is an off-site alternative, the conditions of the CERCLA off-site policy must be
followed.
4.5
Off-Site Fuels Blendine
Fuels blending is an alternative for solvents and used oils generated at RMA. These wastes
could be blended as fuels to be burned for energy recovery. This alternative is an additional
recycle/recovery alternative that would be conducted off site and would be consistent with the
CERCLA off-site policy.
4.6
Off-Site Incineration
The off-site incineration alternative must also meet the CERCLA off-site policy conditions
identified in Section 4.3. The wastes from a f~w of the CERCLA support activities have off-site
incineration identified as a management alternative. Depending upon the waste characterization,
the appropriate incinerator will be regulated under Subtitle C hazardous waste criteria, or under
Subtitle D solid waste criteria.
c
FiaaJ Dcciaiao Doe.- for EIcmeDI One ollbe CE.RCU, Liquid WuICI - IDterim Reopaue Actioa
Rocky M~ A~ - DocIollDmt CODII'OI No. S300-01.{)9.AALE
rma9\rqJOC1I\aale - dd.ita
December 1992

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SECTION 5
CHRONOLOGY OF EVENTS
'.
The significant events pertaining to Element One of the expanded CERCLA Liquid Wastes IRA
are presented below.
Dm
Event
Summer 1984
In support of activities conducted under RI and IRA programs at
RMA, storage of wastes in warehouses began.
June 1987
State of Colorado, Shell Oil Company, EPA, and U.S. Army
agreed that certain IRAs would be conducted.
February 1988
Proposed consent decree lodged in the case of United States versus
Shell Oil Company with the U.S. District Court in Denver,
Colorado. The consent decree specified 13 interim actions,
including the CERCLA Liquid Wastes IRA, to facilitate
remediation activities.
June 1988
Proposed modified Consent Decree.
February 1989
Federal Facilities Agreement (FFA) was developed to establish a
procedure by which the organizations would cooperate in the
assessment, selection, and implementation of Response Actions
resulting from the release or threat of release of hazardous
substances, pollutants or contaminants at or from the Arsenal.
(prior to the effective data of the FFA, participation by the Army,
EPA, Department of the Interior, Agency for Toxic Substances
and Disease Registry, and Shell in the RIfFS and IRAs were
governed by the February 1988 and June 1988 proposed Consent
Decrees. )
June 1989
Formal Waste Management Program for storing investigation-
derived wastes began.
June 1990
Final IRA Decision Document for CERCLA Liquid Wastes IRA.
June 1991
Final IRA Implementation Document issued, construction began.
1"l1l8I DcciaiaD Dao:umcm r« Ek:mcDt ODe of !be CERCtA Liquid Wura - IIIIa'im Rcopoa& Adioa
Rocty M-.iD AnmaI- Dao:umcm CODUoI No. S3O().()1~AALE
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January 1992
Final Technical Study document regarding a proposed Technical
Study for an expansion of the CERCLA Liquid Wastes IRA to
include three new elements: Hazardous Waste Disposal, PCB
Waste Disposal, and Bulk Waste Management submitted to EPA
Region VIII and the RMA Technical Review Committee.
..
FiuI DeciaiaD I)ocumca1 for EIcmc:III ODe 0( die CERCLA Liquid WaleS - IDIerim ReIpCIIIK ACIioD
Rocky M~ A~ - Docummt c-toI No. SJOO.01-09-MLE
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SECTION 6
. IRA PROCESS
'.
The process for Element One of this IRA is as follows:
1.
Opportunities for public participation in the development and approval of Element
One of this IRA expansion will be provided before issuance of the respective final
Decision Document. There will be notice and opportunity for written comment
on this draft Decision Document; however, a public meeting will not be
scheduled. Opportunity for discussion at a public meeting will be provided if a
public meeting has otherwise been scheduled during the appropriate time. After
the close of the comment period for this draft final version, a final version will
be prepared.
2.
The draft final Decision Document will be subject to dispute resolution. At the
close of the period for invoking dispute resolution, if dispute resolution is not
invoked, or after the completion of dispute resolution, the Army shall issue a final
Decision Document.
3.
After the issuance of the final Decision Document, each specific proposal for
disposing and/or treating hazardous waste items or waste, will be initiated with
a letter Implementation Document to the organizations and the State. This letter
will describe: the hazardous waste site or equipment involved; the origin and
storage site of the waste; and the alternative from the final Decision Document
that will be used (including the method and location of disposal and/or treatment
and/or remediation). Any organization wishing to invoke dispute resolution
regarding a letter Implementation Document must do so within 10 calendar days
after receipt of the document.
4.
As Lead Party for design and implementation of this IRA, the Army will prepare
the letter Implementation Documents, as described above, and will be responsible
for implementing the IRA in accordance with the IRA letter Implementation
Documents.
1'"II1II DeciaiaD Docuaxa1 for ~ Cae of die CERCU Liquid w.- - IIIIaiaI Rcapaax ACIimI
Rocky ~ A.-1- I)oc:umoat CaauoI No. S300-01-09-AAI..E
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SECTION 7
APPLICABLE OR RELEVANT AND APPROPRIATE REQUIREMENTS
..
Activities conducted pursuant to this expansion of the CERCLA Liquid Wastes IRA may be
governed by the following ARARs for the on-site storage and on-site treatment/stabilization
alternatives identified in Section 4. Formal selection of these and other potential ARARs will
be made in the letter Implementation Document for each specific waste stream disposal
alternative.
Although some requirements do not fit neatly into these categories, in general there are three
different types of ARARs:
.
Chemical-specific
Location-specific
Activity-specific
.
.
These three different types of ARARs are discussed below for each of the three on-site
alternatives identified in Section 4. For the off-site alternatives, RMA will ensure adherence to
the appropriate and applicable requirements of RCRA in compliance with the CERCLA off-site
policy. Specific requirements will include all generator notifications as specified in 40 CFR Part
262 and 268. In addition, the off-site shipments of any wastes will comply with the appropriate
Department of Transportation regulations and the transporter regulations under 40 CPR Part 263
as appropriate.
7.1
Chemical-Soecific ARARs
Chemical-specific (or ambient) requirements set hea1th- or risk-based numerical values or ranges
in various environmental media for specific hazardous substances, pollutants, or contaminants.
Such ARARs establish either protective cl~-up levels for the chemicals of concern in the
designated media, or indicate an appropriate discharge limit for particular chemicals of concern.
Only a limited number of chemical-specific requirements have been promulgated.
fiDal Docisicm Doeumeat (or EIemcat ODe of 1bc CERcu. Uquid Walla - IDIaim Rc8poue Ac:Iiaa
Rocky MOUIII8iD A~ - DocumeaI CoaIrOI No. 53O().()1~AA1.E
rma9\rq1oN\aa1e - c1d.n
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Contaminants identified at RMA that are of concern or interest include inorganic chemicals,
volatile and semivolatile organic chemicals, and pesticides. These RMA contaminants of
concern are identified in Table 7-1.
'.
7.1.1 On-Site Stora2e Alternative
The objective of the alternative would be to continue storing certain investigation-derived wastes
on site until an appropriate treatment or disposal alternative has been identified, or until the final
remedy of the site is selected. This alternative does not involve clean-up levels. In addition,
this alternative does not address discharge limits; therefore, there are no pertinent ambient or
chemical-specific ARARs for this alternative.
7.1.2 On-Site Treatment/Stabilization Alternative
The objective of this alternative would be treatment or stabilization of wastes for' eventual .
disposal either on. or off site. This treatment alternative would not include clean-up levels. This
treatment alternative may include removing free liquids from containerized wastes and/or adding
material to stabilize the waste. Liquids removed from the containerized wastes would be
discharged to RMA's CERCLA wastewater treatment system. The chemical-specific ARARs
for the CERCLA wastewater treatment system IRA were identified for the effluent in the Final
Decision Document (June 1990). These ARARs are provided in Appendix 1. The chemical-
specific ARARs identified for this wastewater system IRA will not be repeated in this document;
therefore, there are no pertinent ambient or chemical-specific ARARs.
7.2
Location-Specific ARARs
Location-specific ARARs are restrictions placed on the concentration of hazardous substances
or on the conduct of activities solely because they occur in special locations. These ARARs may
restrict or preclude certain remedial actions o~ they may apply only to certain portions of a site.
FiDaI DcciaiaD ~ for EIcmcat ODe cI die CBRCLA Liquid W- - IDIerim RCIpOII8C ACIiaa
Rocty MCIUIIIaiD ArxuI - Doc- CoauoI No. S~I~AAL2
nna9\rqoorU\aa1e - dd. in
DccaDber 1992

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TABLE 7-1
.'
RMA Contaminants of Concern
ABBREVIATION
III TCE
112 TCE
11 DCE
11 DCLE
12 DCE
12 DCLE
ALDRN
AS
ATZ
BCHPD
BTZ
C6H6
CCL4
CD
CHCL3
CL2CH2
CL6CP
CLC6HS
CLDAN
CPMS
CPMSO
CPMS02
CR
CU
DBCP
DCPD
DDDP
DIMP
DITH
DLDRN
DMDS
DMMP
ENDRN
ETC6HS
FC2A
GB
HD
HG
IMP A
IMP A
ISODR
LO
ANAL YTE
1,1,1- Trichloroethane
1,1,2- Trichloroethane
1,l-Dichloroethene
1,1 Dichloroethane
1,2-Dichloroethene
1,2-Dichloroethane
Aldrin
Arsenic
Atrazine
Bicyclo (2,2,1) Hepta-2, S-Diene
Benzothiazole
Benz.ene
Carbon Tetrachloride
Cadmium
Chloroform
Methylene Chloride
Hexachlorocyclopentadiene (HCCPD)
Chlorobenzene
Chlordane
p-Chloropbenylmethyl Sulfide
p-Chloropbenylmetbyl Sulfoxide
p-Chlorophenylmetbyl Sulfone
Chromium
Copper
Dibromochloropropane
Dicyclopentadiene
Vapona
Di-isopropylmethylphosphonate
Dithiane
. Dieldrin
Dimethyldisulfide
Dimetbyl Methylphosphonate
Endrin
EtbylbeDz.ene
Fluoroacetic Acid
Sarin
Sulfur Mustard
Men:ury
Isopsopyl Methyl Pbosphonate
Isopropyl Methyl Pbosphonic Acid
Isodrin
. Lewisite Oxide
F1D8I 0cciaiaD o...u-aa f« EkmeaI ODe 01 !be CERcu. Liquid Wu1c8 - IaIerim RcapaII8C Ac:tiaD
Rocky ~ A.-I - o...u-aa COIIIrOI No. 5~1..()9.MU! .
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ABBREVIATION
MLTHN
MEC6HS
MIBK
NNDMEA
OXAT
PB
PPDDE
PPDDT
PRTHN
SUPONA
TCLEA
TCLEE
TDGCL
TRCLE
XYLEN
ZN
Table 7-1 (Continued)
RMA Contaminants of Concern
'.
ANAL YTE
Malathion
Toluene
Methyl Isobutyl Ketone
N-Nitrosodimetbylamine
1,4-0xathiane
Lead
1,I-Dichloro-2,2,-bis (para-chlorophenyl) ethylene
2,2-Bis (para-chlorophenyl) -I,I,I-Trichloroethane
Parathion
Supona
1,1,2,2-Tetrachloroethane
Tetrachloroethylene
Thiodiglycol
Trichloroethylene
Xylenes
Zinc
F8181 DcciaioD Dacumca& for Ekmad ODe 01 !be CEJtCLA Liquid W- - IDteria\Itcopauc ACIiaD
Rocty M--.-.r-I- Docwncat CCIIIIrOI No. S3QO.Ol.oJ-AAU!
rma9\JqIortIlMIc - dd.n
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Paragraph 44.2 of the Federal Facilities Agreement (FFA) provides that:
Wildlife habitat(s) shall be preserved and managed as necessary to protect
endangered species of wildlife to the extent required by the Endangered Species
Act (16 U.S.C. ~ 1531 et seq.), migratory birds to the extent required by the
Migratory Bird Treaty Act (16 U.S.C. ~ 703 et seq.), and bald eagles to the extent
required by the Bald Eagle Protection Act (16 U .S.C. ~ 688 et seq.).
While these provisions of the FF A are not ARARs, the statutes cited therein are ARARs,
applicable to all the on-site alternatives discussed in this section, and will be complied with for
each alternative. The impact of these requirements on each of these alternatives is dependent
upon where these alternatives would be located at RMA. Coordination for any of these
alternatives would be maintained with the U.S. Fish and Wildlife Service to ensure that no such
adverse impact would arise from implementation of these alternatives.
The Clean Water Act regulations identified in 40 CPR Part 230 for Section 404(b)(1) guidelines
for specification of disposal sites for dredged or fill material were reviewed and determined not
to be applicable to any of the three alternatives since the discharge of dredged or fill material
into waters of the United States is not expected or contemplated. Since these regulations only
address the disposal of such materials into the waters of the United States, which. is not
contemplated, they are not considered to be relevant and appropriate to apply to these
alternatives. .
The regulations identified in 33 CFR Parts 320-330 regarding navigation and navigable watcn
for Corps of Engineers, Department of the Army, were reviewed and determined to be neither
applicable or relevant and appropriate for the alternatives. This determination is based on
information that these alternatives do not involve any of the activities, nor are they similar to
the activities, that are intended to be controlled by these regulations as defined in 33 CPR I
320. I (b).
The regulations for units managing hazardous wastes in 40 CFR n 264.18(a) and (c) were
reviewed and determined to be neither applicable or relevant and appropriate. These regulations
identify location standards that prohibit wastes to be managed within 200 feet of a fault that has
FiaaJ DocisiaD Doc.- for EIcmoaI ODe of !be CERcu. Liquid w- - IDIcrim RcIpoa8c ActiaD
Rocky M-m AncuJ - Dac- CCIDII'OI No. S3QO.OI..09-MLE
rma9\rqtafta\aale - dd.in .
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had displacement in Holocene time or within salt dome formations, salt bed formations, and
underground mines and caves. These conditions do not exist at RMA and are therefore not
considered an ARAR for the alternatives.
Location standards identified in 40 CFR ~ 264.18(b) require facilities located in a lOO-year
floodplain to be designed, constructed, operated, and maintained to prevent washout by a 100-
year flood. These regulations were reviewed and determined to be applicable and relevant and
appropriate for the on-site alternatives. Dependent upon where these alternatives would be
located, the Army will ensure compliance with the requirements.
The provisions of 40CFR ~ 6.302 (a) and (b) regarding construction that would have an adverse
impact on wetlands or be within a floodplain are considered appropriate and relevant and
.appropriate for these alternatives. The Army will ensure that the location of these alternatives
would cause no adverse input on wetlands. Coordination would be maintained with the U.S.
Fish and Wildlife Service to ensure that any such adverse impacts are avoided or mitigated.
All the location-specific criteria discussed above are applicable location-specific ARARs for on-
site disposal/treatment alternatives.
7.3
Activitv-Specific ARARs
Performance, design, or other action-specific requirements set controls or restrictions on
activities related to the management of hazardous substances, pollutants, or contaminants. These
action-specific requirements may specify particular performance levels, actions, or technologies
as well as specific levels (or a methodology for setting specific levels) for discharged or residual
chemicals.
7.3.1 On-Site Stora2e Alternative
The requirements under the Clean Air Act, the National Emission Standards for Hazardous Air
Pollutants (NESHAPs), Colorado's Air Pollution Control Commission Regulations, and Colorado
Ambient Air Quality Standards have been reviewed and determined to be neither applicable or
Filial Decou DocUIDCII1 for ~ ODe ollbe CERCLA Liquid WAlIa - IaIcrim Rcopoue AcUaa
Rocky MOIIIIIaiD AnooaI - DocIllllClll CoaII'OI No. S~I-09-MLE
rma9\rcporu\aak - cId.in
Dec:cmbcr 1992

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relevant and appropriate for this alternative. RMA currently has storage units available for use
under this alternative and no new units are expected to be constructed. Therefore, this
alternative would not result in the release of any contaminant that could adversely impact
ambient air quality.
Subtitle C of RCRA outlines storage requirements for hazardous wastes managed in containers
in 40 CFR ~ 264 Subpart 1. For material determined to be hazardous waste; substantive RCRA
provisions are applicable to their management. In general, the substantive provisions for
container management include: container condition, compatibility of the wastes to be stored,
management of the containers, inspection protocol, and containment criteria.
In addition to the storage requirements of Subtitle C, the RCRA regulations also establish LDRs
in 40 CFR Part 268 for all hazardous wastes. If it is determined that a waste stream included
in this element subject to LDR is present, the Army will act in a manner consistent with EPA
guidelines (OSWER Directives 9347.3-01 through 9347.3-07) then in effect for the management
of such wastes in the context of CERCLA clean-up actions. Existing LDR regulations identified
in 40 CFR ~ 268.50 state that restricted hazardous wastes may not be stored at a site unless the
storage is solely for the purpose of accumulating sufficient quantities of the waste to facilitate
proper disposal treatment or recovery. Generally, storing RCRA hazardous wastes and IDW
until a final disposal option is selected in a ROD is allowable storage in accordance with the
CERCLA guidance (OSWER Directive 9345.3-02FS).
7.3.2 On-Site Treatment/Stabilization Alternative
. The Superfund Amendments and Reauthorization Act of 1986 (SARA) ~ 121 establishes a
preference for remedial action involving treatment that permanently and significantly reduces the
volume, toxicity, or mobility of hazardous substances, pollutants, and contaminants at the site.
RCRA requirements may be applicable or relevant and appropriate to this on-si~ treatment
alternative depending on whether the waste m.aterials to be treated are hazardous wastes and the
requirements for treatment apply. RCRA defines treatment as:
FiDal Dcciaiaa Docuamm for EJcmeDt ODe oIlbe CERCI..A liquid Wuta - IaIerim RC8pODIC ACIiaa
Rocky MouaIaiD A.-J - ~ CCDIrOI No. S)OO.OI~AALE
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Any method, technique, or process, including neutralization, designed to change.
the physical, chemical or biological character or composition of any hazardous
waste so as to neutralize such waste, or so as to recover energy or material
resources from the waste, or so as to render such waste nonhazardous, or less
hazardous; safer to transport, store, or dispose of; or amenable for recovery,
amenable for storage, or reduced in volume. (40 CFR fi 260.10)
The RCRA actions that may be applicable or relevant and appropriate are identified in
Table 7-2. Requirements under the Safe Drinking Water Act and the Clean Water Act were
determined not to be ARARs since this alternative will not provide drinking water, and does not
address a public water system (the ARARs for the CERCLA Wastewater Treatment System are
in Appendix I).
Air emissions regulations were reviewed and determined not to be applicable or relevant and
appropriate to this alternative since there are no national or state ambient air quality regulations
that would address treatment of wastes in containers. The NESHAP were reviewed and
determined not to be applicable or relevant and appropriate since they were developed for
manufacturing processes, which is significantly dissimilar to this alternative.
1'"8181 Oecisiaa DocI8llCGl for EIemca1 Oao:: of !be CERCU\ Liquid W -- - IDIerim RC8pOII8C' ActiaD
Ray MOI8II8iD A..-J - o.x:ua-t CODUOI No. S300-0I-09-MLE
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Table 7-2
.
Potential Action-Specific ARARs for the On-Site Treatment/Stabilization Alternative
  Prercquiaite for  
Action Rcquiremenu Applicability  Citation
Treatment (10 a Design and operating IlaJldarda for Treatment of hazardous walle in a unit. .co CFR 264.170.
unit) unit in wbidl hazardoua Walle ia   264.178 (coDlaincn)
 treated. (See citatioDi at ript for   .co CFR 264 .190-
 deailn and operatilli rcquiremenu   264.197 (tanka)
 for apec:ific unit.)   
Placemenl of Liquid. in Landfills Prohibition.   .co CFR 264.314
Liquid Walle Conuinera holdilli free liquida may   
in Landfill not be placed in a land fill unleaa the   
 liquid is mixed with an abaorbenl or   
 aoIidifaed.   
Treatment Treatmenl of walle IUbject to ban on Diapoaal of conuminated aoiI and debria 40 CFR 268.10
(when Walle land diapoaal must attain leve" I'CIUlting from CERCLA it !!!!! IUbject to land .co CFR 268.11
wiD be Land achievable by belt delllOllllrated diapoaal prohibitioaa and/or trealmenlllaJldarda .co CFR 268.12
Diapoaed) available treatmenllCChnolQJies for aolvenu. dioxins, or California lilt _s .co CFR 268.41
 (BDA T) for each hazardoua uatil November 8. 1990 (and for certain fant .co CFR 268
 conatilUenl in eadllisted walle, if third wallcl until Auplt 8. 1990).  (Subpan D)
 rcaidual it to be land diapoaed. If   
 residual it to be funber treated, All waileS lilted u hazardoua in .co CFR 
 initial trealmenl and any IUbacquent Pan 261 u of November 8, 1984. n:atriCtiODl 51 f! 40641
 treatmenl that produces residual to promul,ated for land diapoaalaDdlor treatmenl 52 fR 25760
 be treated need not be BDAT. if it  IlaJldard determination u follow.:  
 does DOt exceed value in CCWE   
 (ConatilUCnI Concentration in Walle Solvenu and dioxins Nov. 8. 1986 
 Extracl) Table for each applicable California 1iIt wallcl July 8. 1987 
 water. (See S I f! 40642. 0ne-d1ird of aU ranted and  
 November6. 1986.) hazardoua Walle. Au,. 8. 1988 
  UnderJl'Ollnd injection of  
  IOlvenu and dioxins and  
  Califomillist wal\cl Au,. 8. 1988 
  CERCLA relpOnae aClion and  
  RCRA corrective: action soil  
  and debria Nov. 8, 1988 
  TwcHbirds of aU ranked and  
  1iIted hazardoua WaIleS July 8, 1989 
  All remaining ranked and  
  1iIted hazardoua waileS  
  identified by characteristic  
  under RCRA Section 3001 May 8, 1990 
  Any hazardous - lilted or  
  idemified under RCRA  
  Seclioa 3001 after Nov.8 1984 WIIbin 6 mo.. 
   of the date of 
   identifICAtion 
   or liItiDi. 
c
Filial DociaioD ~ for EIcmcDt Oaoc ollbc cacu, Liquid w- - IDIcrim Rcapauc: ActioD
Roc:ty MIIIIIII8iD A~ - Doc:- CODIrOI No. 5300-01~AALE
rma9\rq101t11aa1e - cId. in
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SECTION 8
CONSISTENCY WITII TIlE FINAL RESPONSE ACTION
This Final Decision Document outlines management alternatives, as well as mechanisms, to
coordinate disposal options for hazardous wastes generated at RMA as a result of CERCLA
activities. Although the Final Response Actions have not been selected at this time, this IRA
was developed to be consistent with and contribute to the efficient performance of a final
response action throughout the remainder of the remedial action process at RMA.
FiaaI Deciaiaa DocumaI1 roc Ekmca1 0IIe of Ibc CER~ Liquid w- - IDIcrim Rapaue AdiaD
Rocky tdCIUIIIaiD A~ - Doc\IIDICIII COIIII'OI No. 5~1-09-AAL£
11II89\rqJoN\aaIc - deI.in .
Dcccmbcr 1992

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SECTION 9
RESPONSE TO COMMENTS FROM DRAFf DOCUMENT
ELEMENT ONE OF CERCLA LIQUID WASTE DECISION DOCUMENT
Organization Comments  Response or Possible Resolution
U.S. EPA Region VIII General Comments    
 Understandably, detail is lacking regarding the specifics of the Detailed information regarding each alternative will be included
 .alternatives. which must be provided in the Implementation in the appropriate Implementation Letter.
 Documents.    
 The document generaliles in the text as to ARARs that might be Detailed information regarding ARARs for each alternative will
 pertinent if a certain alternative is chosen. EP A understands that the be included in the appropriate Implementation Letter.
 specific ARARs will be explained in detail when the preferred 
 alternative is described in the Implementation Documents and that 
 Dispute Resolution may be invoked. However, the Decision 
 Document does do a good job in covering the ARARs that may be 
 pertinent.    
 EPA is treating this document as a draft decision document and not as Concur. This document is a draft decision document.
 a draft final decision document.    
 Specific Comments    Implementation Letters for this alternative will include 40 CFR
     Part 266, Subpart E - Used Oil Burned for Energy Recovery,
 Page 4-S, Section 4.6: For the fuel blending alternative, RMA would as an ARAR if the wastes and the technology meet the
 need to comply with 40 CFR 266.42 standards applicable to applicability section of 40 CFR 266.40. However, since the
 generators of used oil burned for energy recovery. The receiving Army will not blend fuel, 40 CFR 266.43 is not an ARAR.
 fuel blending facility must comply with 40 CFR 266.43 standards 
 applicable to marketers of used oil burned for ener,y recovery. 
 Page 6-1, Section 6, First Bullet: The document states that a public No meetings will be scheduled for Element One. The
 meeting will not be scheduled. It was EPA's understanding that a document will be discussed at a public meeting, if one is
 specific meeting would not be scheduled for public comment, but that scheduled in the appropriate time frame.
 the document would be discussed at another public meeting with other 
 topics in that same time frame. Please clarify. 
 Page 7-14, Table 7-3: The citation listed under the column Treatment The table will be changed to reflect 40 CFR 264.190 - 264.197.
 (in a unit) should be expanded to include 40 CFR 264.190 - 264.197, 
 instead of 40 CFR 264.190 - 264.192.  
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General Comment
Shell Oil Company
11
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ELEMENT ONE OF CERCLA LIQUID WASTE DECISION DOCUMENT
(Continued)
Comments
Section 4.4 of the Element One Decision Document states that -All of
the CERCLA IDW... have off-site incinerati'on identified as a
management alternative. - Yet Table 4-1 shows that sml.Y waste
solvents from the laboratory has off-site incineration identified as one
of several potential alternatives. Re-write paragraph 4.4 to more
accurately renect what we mean.
J.&!!Y
It is our understanding that this IRA does not require adoption of
specific waste management practices and that the organizations can
continue practices that comply with applicable law, without regard to
whether they have been approved under the IRA. This is of
particular concern to the extent that the IRA appears to, but should
not, cover ordinary, non-hazardous solid waste.
General Comments
I. The decision document should refer to or be consistent with EPA
guidance on Investigation- Derived Wastes (lOW). Consistent with
this guidance, it should be noted that .oW generated in the future can
be returned to the source area immediately after generation if this is
deemed protective of human health and the envil9DJllellt. Returning
IDW to the source area will be protective of human health and the
environment in the overwhelming majority of instances at RMA
because of the secure nature of the site and the relatively low levels
of contaminants generally found in the IDW. This practice will avoid
the generation of large quantities of IDW in the future.
Response or Possible Resolution

Section 4.4 will be re-written to omit -All of the CERCLA
investigation-derived wastes and-
Concur. This document constitutes coordination of the listed
management alternatives, but it does not require their adoption
for any specific waste stream or waste shipment. Element One
of this IRA addresses only the management of haza~ous waste,
Concur in the observation, but do not concur in the suggested
revision. RMA manages IDW in accordance with RMA's letter
of November 19, 1990 to EPA. The letler provided that: (I) in
areas of known combined surface and subsurface contamination,
soils that are excavated are left on site; (2) in areas of no
contamination, soils are left on-tlite; and 3) where the
subsurface is contaminated and the surface is uncontaminated,
the soils will be drummed, removed, or otherwise managed.
Only this third situation will generate a waste stream that
requires management under Element One.

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ELEMENT ONE OF CERCLA LIQUID WASTE DECISION DOCUMENT'
(Continued)
Comments
2. Table 7-2 could mislead the casual reader, who might assume that
a substantial number of the listed waste codes might exist at RMA.
Even though. footnote at the end of the table indicates that these
waste codes do not necessarily exist at RMA, it is UMecessary to
identify Land Disposal Restrictions (LDRs) for any waste codes
unless it actually exists at RMA. In reality, only. small fraction of
these wastes codes may exist at RMA. Furthenoore, LDRs mayor
may not be ARARs for waste codes which may exist at the site.
Shell believes that this table has little value at this stage of the IRA
and should be deleted from the text.
Soecific Comments
I. Page I-I, Second Paragraph: It would be helpful to readers of this
section to specify that the IRA being expanded is the CERCLA liquid
waste IRA.
2. Page 2-1, First Paragraph: The reason for referring to the
proposed Modified Consent Decree dated June 7, 1988 in this
paragraph is unclear.
3. Page 2-1, Second Paragraph, First Bullet: The waste streams
listed as being covered by this element of the IRA should only be
covered if they are hazardous wastes.
Response or Possible Resolution
RMA concurs that this comment accurately reflects the
statement of law; however, we believe that inclusions of the
table aids in clarifying RMA's compliance strategy. RMA .Iso
believes that the footnote provides adequate notification to those
who may misinterpret the significance of the table.
The Second Paragraph, first sentence, will be modified to read:
.Section 2 of this Decision Document provides a brief
background on the CERCLA Liquid Wastes Interim Response
Action (IRA) currently being conducted at RMA, including this
expansion which consists of the three additional elements to the
original IRA. .

This paragraph references an agreements which address the
manner in which IRAs at RMA are to be conducted. Section
IX of the proposed Modified Consent Decree outlines the
implementation process for IRAs. Although the consent
decrees were never adopted or accepted by the courts, the
implementation process is still used.
Each waste stream identified in this Decision Document
potentially is hazardous waste. If, upon analysis, any specific
waste is determined to not be a hazardous waste, then this
element of the IRA will not apply to its management and

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(continued)
ELEMENT ONE OF CERCLA LIQUID WASTE DECISION DOCUMENT
(Continued)
Comments
4. Page 3-1, First Paragraph: Shell recommends deleting this
paragraph. It if is to be retained, it should be made consistent with
Section XXII of the FFA. That is, add .that are timely; that, to the
maximum extent practicable, are consistent with and contribute to the
effective perfonnance of Final Response Actions; that to the
maximum extent practicable, attain ARARs.... and delete .that utilize
permanent solutions and alternative treatment technologies a resource
recovery technologies to the maximum extent practicable as stated in
CERCLA 121 clean-up standards..

S. Page 4-1, Second Paragraph: Many of the wastes mentioned in
Section 3 are not hazardous wastes. For example, the overwhelming
majority of IDW currently stored at RMA are not hazardous wastes
and need not be stored in substantive compliance with the
requirements of Subtitle C of RCRA or more stringent state
requirements.
6. Table 4-1: As stated previously in our comments, many of the
wastes referred to in the text and listed in this table are not hazardous
wastes. In addition, many of the materials that may be hazardous and
are to be recycled (such as used batteries and used oil recycled in a
nwmer other than for energy recovery) are not subject to the
management and permit requirements under RCRA for hazardous
waste (see 40 CFR 261.6). Hence, it is unclear why many of these
materials are covered in an IRA which was intended to be specific to
hazardous wastes.
1. Page 4-4, First Paragraph: The document setting forth EPA's
.off-site policy. should be specifically cited.

8. Page 4-4, Second and Third Paragraphs: Shell's understanding in
approving expansion of this IRA was that it will apply only to
hazardous wastes. References to transferring wastes under the IRA
to a Subtitle D facility should therefore be deleted. Conforming
corrections will be required in Table 4-1.

9. Page S-2: Paragraph 22.16 of the FFA requires submission of the
technical study to the RMA Committee, not just EPA.
Response or Possible Resolution
Page 3-1, First Paragraph will be modified as requested.
The applicability of RCRA requirements including a hazardous
waste determination are yet to be determined for each waste
stream, including investigation-derived wastes. Once this
determination is made, only those wastes determined to be
hazardous wastes will be included in Implementation Letters.
Hazardous wastes that are recyclable are subject to the
requirements for generators, transporters, and storage facilities
as required under 40 CFR 261.6 except for certain materials
like some used oil and spent lead-acid batteries that are destined
for reclamation. These materials are regulated under
Subparts C through H of Part 266. The fact that these waste
streams are addressed in this Decision Document does not mean
that every disposal of used oil or spent batteries will have to be
addressed in Implementation Letters.

After .off-site policy., .OSWER Directive 9834.11. will be
added.
This element of the IRA will only address hazardous wastes.
This section will be revised to renect that the FF A requirement
of paragraph 22.16 were followed in the modification of the
CERCLA IRA.

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ELEMENT ONE OF CERCLA LIQUID WASTE DECISION DOCUMENT
(Continued)
Comments
10. Page 7-2, Second Paragraph: It is unclear why LDRs are
identified as potential ARARs, since according to page 7-1, the
ARAR discussion is limited to "the three on-site alternatives identified
in Section 4," which do not apparently include on-site disposal.
Although the discussion of on-site treatment/stabilization on Page 7-2
refers to "eventual disposal on or off-site," we assume that such
disposal would be under a subsequent phase of this IRA (or perhaps
under the ROD). If immediate on-site disposal is contemplated,
provision for a suitable facility must be made. If such disposal is not
contemplated, treating to BDA T may not, in fact, be required if the
wastes were not RCRA hazardous wastes or, even if they were, if
they were consolidated within the same Area of Contamination
(AOC).
II. Pages 7-3 and 7-4, Table 7-1: The subject table lists the
following compound which are not contaminants of concern:
Chloride, Cyanide, Dimethyl HydraziDe, Fluoride, Selenium, Sulfate,
and Trimethyl Phosphite. Also, the following compounds are absent
from the list: Fluoroacetic Acid, Isopropyl Methyl Phosphorate,
Isopropyl Methyl Phosphoric Acid, Lewisite, Lewisite Oxide,
Malathion, Methylene Chloride, N-Nitrosodiomethylamine, Sarin,
Sulfur Mustard, and Vapona. Also the abbreviation for Copper
should be Cu not Co.

12. Page 7-12, Third Paragraph: Because of the reduced amount of
lOW expected to be generated between now and issuance of the
ROD, the last sentence should not be limited to IDW but be expanded
to refer to RCRA hazardous wastes generally.
13. Page 7-13, First Paragraph: Although the first sentence may be
relevant to selection of an alternative, it is not itself an ARAR.
Response or Possible Resolution
CODcur. On-site disposal is not an alternative under Element
One of tbis IRA. The discussions of LDR's will be deleted.
Table 7-1 will be modified to reflect these changes.
Concur. The paragraph will be modified accordingly.
The first sentence is not saying that SARA Section 121
preference for treatment is an ARAR. If treatment is selected
as a remedial action, the statutes' preference is to permanently
and significantly reduce the volume, toxicity, or mobility of

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Colorado Department of
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ELEMENT ONE OF CERCLA LIQUID WASTE DECISION DOCUMENT
(Continued)
Comments
14. Page 1-14, Table 1-13: The logic behind selection of particular
sections from RCRA regulations is unclear. For example,
requirements for closure of containers (CFR 264.118) are listed but
not for closure tanks (CFR 264.197). Also, since on-site disposal is
not an alternative explicitly considered, the relevance of the
prohibition against placing liquids in landfills is not clear. Finally,
since the deadlines in CFR 268.10 - 268.12 have already passed,
there appears to be no reason to include them in a listing of action-
specific ARARs.
General Comment
I. 6 CCR 1007-3, Section 262.11 requires that a person who
generates a solid waste must determine if that waste is a hazardous
waste. The document should specify how such a determination will
he made for each waste stream.
Specific Comments
I. Page 2-1, First Bullet: The text should be changed to read:
8Management of options for disposal and/or treatment of potentially
hazardous waste... 8 since some of these waste streams may be
determined to be non-hazardous as per the methods described in 6
CCR 1007-3, Section 262.11. Conversely, if we know that all the
wastes will be hazardous, the Subtitle D landfill alternative should be
deleted from consideration.
2. Page 4-1, Section 4.1: Please add the following underlined words
to the text. 8These wastes must be stored in compliance with the
substantive requirements of RCRA and other state and federal laws 
and rellulations, and only additional more stringent state hazardous
waste requirements. 8
Response or Possible Resolution

Tank closure criteria will be added to this tahle. 40 CFR 264-
190 - 264.192 will be changed to 40 CFR 264.190 - 264.197.
Treatment has occurred on~site for elimination of free liquids
for off-site disposal. Whether disposal occurs on-site or off-
site, free liquids must still be eliminated and is the reason for
inclusion in this tahle.
The reason for adding these deadlines identified in 40 CFR
268.10-268.12 is to recognize that all RCRA hazardous wastes
are now restricted from land disposal with the exception of
newly identified or listed wastes such as F039 or new wastes
identified under TCLP.
Nonconcur. The scope of this element of the IRA includes
management of wastes that are determined to be hazardous
wastes. The generator is responsible for making this
determination.
Hazardous waste determinations will be made for each waste
stream. The Subtitle D landfill alternative will be omitted since
this element of the IRA addresses only hazardous wastes.
This language will be modified to reflect the fact that other laws
may apply.

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ELEMENT ONE OF CERCLA LIQUID WASTE DECISION DOCUMENT
(Continued)
Comments
3, Page 4-1, Section 4.2: Please provide more detail concerning the
on-site treatment/stabilization alternatives. What types of treatment
and stabilization are envisioned'? What type of final disposition may
occur; will the treated/stabilized material be stored on-site or shipped
off?
4. Table 4-1: Please clarify the category .trash.. How does this
differ from .contaminated dehris. .drummed solids., and .found on
post? Under what circumstances would .trash. be considered
contaminated material suitable for off-site Subtitle C disposal?
S. Table 4-1, Page 4-1: The on-site treatment/stabilization
alternatives include drummed soils from RifFS activities. However,
on Table 4-1, that alternative is not selected for soil. Please explain
this discrepancy.
6. Table 4-1: Please explain why off-site reclamation is not included
as an alternative for spent carbon filters from the sewage treatment
plant.
Respome or Possible Resolution
Detail regarding the specifics of the alternatives, including
treatment/stabilization, will be included in the Implementation
Letters. However, we do contemplate potential treatment in the
form of removing free liquids prior to land disposal. Treated
waste may be stored, or it may be disposed of off-site under
this part of the IRA.

.Trash. is defined to be normally disposable used products
generated during field activities and may include wastes
associated with field activities as well as decontamination
efforts, like visqueen, paper towels, wrappers, etc.
.Contaminated debris. is generated during field activities and
includes large items that are not usually disposable but are
broken or no longer serviceable, like abandoned well casings,
PVC piping, cement, etc.
.Drummed solids. is defined to include contaminated metal and
contaminated sorption material.
.Found on-post. are those waste materials that were not
associated with any specific operation or clean-up activity at
RMA but were .found. on-post and were labeled as such.
These definitions will be added to the text.
Page 4-1 will be changed to reRect .wet soils. as opposed to
just .soils.. In the past, soils generated from RI/FS activities
may have also included water and, therefore, have to be
stabilized to eliminate free liquids. Soils are no longer accepted
in this manner and are therefore not identified in Table 4-1.

Off-site reclamation will be identified in Table 4-1 for spent

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Colorado Department of
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ELEMENT ONE OF CERCLA LIQUID WASTE DECISION DOCUMENT
(Continued)
Comments
7. Table 4-1: Would off-site reclamation be an available alternative
for -found on post- items with some salvage value?
ARARs Comments
I. Page 1-1, Section 1: According to CERCLA Section "121, on-site
alternatives are subject only to ARARs; therefore, off-site alternatives
must comply with !!ll requirements of!ll applicable statutes.
2. Page 1-10, Section 7.2; The document identifies the E!1dangered
Species Act, the Migratory Bird Treaty Act, and the Bald Eagle
Protection Act as location-specific ARARs. The actual extent to
which these statutes apply at the Arsenal is currently the subject of
inuch debate, particularly on the center of the Off-post EA/FS and
proposed legislation concerning the designation of RMA IS a wildlife
refuge. Regardless of the semantics conCerning the application of
these statutes to the Arsenal, the State believes that the statues'
respective requirements should not be used to limit clean-up of the
site. Rather, they require the Army to achieve a clean-up which is
adequate for the long term, healthy existence of the protected species.

3. The location-specific standards identified in 40 CFR Section
264.18(b) and 40 CFR Section 6.302(a) and (b) are -applicable-
requirements.
4. The following action-specific ARARs should be included for the
on-site storage and the on-site treatment/sterilization alternatives: 40
CFR Subpart 8 - General Facility Standards, 40 CFR Subpart C -
Preparedness and Precaution, 40 CFR Subpart D - Category Plan,
and 40 CFR Subpart G - Closure and Post-Closure Care.
Response or Possible Resolution

-Found on post- items consist of. wide variety of small
containers of such items as unused paint or other chemicals that
were used or unused. These containers are placed into lab
packs. Other -found on post- items consist of a mixture of
unknown wastes that are chemically characterized. Most
materials, because of their unknown origin or wide variety of
mixtures or small quantities, could not be reclaimed or
recycled.
Section 7, Page 7-1, third paragraph references that -For the
off-site alternatives, RMA will ensure... compliance with the
CERCLA off-site policy. - The off-site policy does' require
compliance with all applicable statues and regulations.
Therefore, no further clarification is needed.
RMA notes the state's comment.
Concur. These citations will be added to the text.
Detail regarding the specifics of ARARs for each alternative
will be identified in each Implementation Letter. In addition,
RMA is currently adhering to the substantive requirements of
these Subparts identified in 40 CFR.

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ELEMENT ONE OF CERCLA LIQUID WASTE DECISION DOCUMENT
(Continued)
Organization .   Comments Response or Possible Resolution
Colorado Department of S. Depending upon the circumstances, certain air emission As previously stated, detailed specifics of ARARs will be
Health (continued)  regulations could be ARARs for the on-site ireatment/ stabilization identified in the Implementation Letters.  
  alternative.     
  6. Please explain why landfills and LDRs are mentioned as ARARs Liquids in landfills are mentioned as well as LDRs, because of
  in Table 7-3. If land disposal is an option, respective ARARs must the treatment/stabilization of the wastes that has to occur prior
  be identified.   to off-site disposal. The treatment/stabilization of these wastes
      may occur on-site and although the disposal may not occur on-
      site, the criteria associated with disposal must be considered.
City of Commerce City  The City of Commerce City has been, and continues to be, in RMA notes the City of Commerce comments. We would point
  opposition to storage of any waste and/or contaminated material on out that this is an .in!!rim response action. Final decisions on
  the Rocky Mountain Arsenal. Although we can appreciate the waste storage or disposal will be addressed in the ROD.
  rationale for venting store said matea:ial in an enclosed building, the   
  City's position is that the Arsenal should be cleaned up to.   
  residential standard and waste from said cleanup operations removed   
  promptly.     
U.S. Fish and Wildlife  We do not have any comments at tbis time. No response required.  
Service        
11

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.
APPENDIX I
.
Chemical-Specific ARARs
for the
CERCLA Wastewater Treatment System

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8.0 APPLYf81U"''' 0. 11~"" AIm APnOnTan e~ POR 'nm
~~ ftStl'nATD 'I'IP.."""" SY!M.'n IH'l'nTlf ~IIOHS. AC;~OI
. .1. ADYmrP 0. CPlP:..ryOL-s"~ne ~
AUi.. or c:ha1c:a1-8p8C1f1c requ1ra8ftta Nt COftC8l1tn~ioD
lia1ta or J:8D9" 1D vario- 811Yircm8ata1 ..u.a tor 8p8C1tic
hazU'dcN8 -u.1:aftc88, poU1lbBta, or~. SUcb AJlu.
either .ft ~iv. cleu-up 1..81. tor the c:haical. ot conc:am
in the d88i9D8~ 88dia, or iDdicau &IS aPPJ:o~iau 18Yel ot
di.c:haz'ge.
The objec:Uv. ot thi8 DIA an di8c:uaed 1D the A8-aent
DocwI8nt. '1'h1. DIA vUl be .i8pl--~ prior to the t1nal
raacU.ation to be UDdertaka iD the CODUft ot the 0np08~ OperUle
Uni~ ROD. 'fb8 lift ot 8p8Citic ~ h88 b88a cap11ed
baaed upon U8at:abUi~ ~ data u4 ~ ~- ~ta
11k81y to be c:cmuin8d iD the ayR8a Wlu8D1:. 'fb8 884ia ot
concern bue i. the vaR8VaUZ' tz'8a~ by the propo.- UtA ay.~_.
Thi. propo.8d Dt& tnat88Dt ays1:8a vill 41-h~r'98 tz'eated ettluent
to the .an1tuy 88VV tor eventual nl.... attu tart!aer tNataent
within the RIG .-ge tnatMDt plazst (ftP). Di8Cbup8 troa the
STP an .tricUy nplat8d by the RIG IfPDIS Penit (c:urzoent:.ly under
revi.ion) aDd IIU8t attain the 8p8Citic: li81taUcma c:cmta1n84 1n .
that pua1t prior to nl.... troa RIG. The A1Wt8 118t8d below vill
apply at the poim: ot nl.... trail the ~ WaatavaUZ' ':reatunt
Sy.t- (arrs) DtA.
The ~ Soath Planta Wutevater ft8at88Dt Paci11ty (SPWTl')
vill con~imJa to be opan.~ prior to the i8plaazstatioD ot the nev
.y.t- puz'8U8ftt to tb18 mA. The SPftl' viU be . nbjact ~o and
coaply with the c:ba1ca1-.pac:itia I&\Jt8 idenUti8d below and vill
attaiD th- liaitaUcma to the .."t.,. 8Xt8ftt practicable. The
Any h88 b8aD ~ CODUzmoaa ...,1iD9 &lid ualya88 ot thi.
ayata aDd it baa. baa partominv vell. Due to ncently
proau1qat8d .u"".rd8 beiD9 .li9btly lovv ~ dftaction liaita
ot the RIa l~tozy, the Az8y vill 8ft"8DIJ8, .. eOOl\ a.
practicable, tor CODtinatozy analya- to be dona on futan SPWTP
ettlu8ftt by CODt:nct laboratorie. vbic:b an cct1t18d at lover
detac:t1OD liaita 80 tllat attaiDaant ot tb- Boa C8D be yeritied.
Bacaua tIU8 tnataant ay.t- vill not pZ'G9id8 ck1nJd.DcJ vater.
and i. ~ e public vatu ay.t_, the .bDd"rd8 8ftBli8bed uncSer
the Safe Dri~lPiDl .aUZ' Act (SOWA) and the C1aan .ater ~ (CWA)
tor cktRIPt"9 vatu' U8 not applicable to thi8 ~.

ft8 8taDdazd8 ccmtain8d in 40 CPR Sac:tiOD 214.14 ven not
conaidend applicabl. to tb1. treata8Dt ayata bac:auaa the
conatitu8Db in the intlU8Dt are not trail nfjQ1a~ aiu. S1nce
14
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the .t."'.""CS8 praaulCJ&~ed PUZ'81J8Irt ~o ttU. regulaUon an ic!8D~ical
~o tho- pnaa1CJ&~ed UDc!er the .a~ioDa1 Pr1auy DrinJdng Vatu
R8CJUlaUaaa (IIPUIf) punuu~ u the SDD, further cUac:uu8d below,
for the - 14 collpOUDda th... .~"".rd8 an n~ couic!ued
further .

COlUli.un~ wit.b the -R ~ IPA CJU1~8De8, the .a~icma1
ConUn9ency Pl- (RCP), 55 Ped. 1t89. ."., "''''i.. CoII~
lAYel Goal. c::om:aiDed 1D tb8 1IPDIf an DOt conaidend either
applicUle or Z'8l~ aDd appZ'apriau u apply 1D tb8 CODUxt of
thi. U8ata~ 8yft88. DA'. 1'o18ftDe- for PaUcicSa c:h-tca1.
on or iD Raw Aqr1=1=nl c.- -r:U~.. ('rPCDC), 40 en Put 180 and
the Pood and DZ'u9 ""-f"I-=aUona 1'o18Z'8DC88 for P88Ucic!.. iD Pood
adaini.1:8nd by DA ('ft9) an ~ nlW8D~ aDd &PP%0...i8" U apply
in the COM8ft of t.b18~. ft... ftaDduda VU"8 4evelopecl for
particular i~ (e.9., food aDd "~) vlUc:b an ~ .=ject to
va~erin9 with the efflU8D~ fZ'C18 thJ.8 Ueataa~ ayRa, Vbic:ta 1IU8t
pa.. tbrouCJb the ftP aDd i. nbjec= u the 11aibUona of the DDES
p8%81~ prior ~ rel.... fZ'C18 RIa.

Tb8 COlondo lu1e S~""~rd8 for Gz~1:v (C:UQ) vue
reviewed and an ~ conaidend applicable u the di.~".rge fZ'C8
th18 %JtA Uea~ ayRa, COD81~ with CQft'8D~ DA CJUi~"DC. ..
conQinecI 1D the RCP. Th- ftaDduda V8Z'8 developed foZ'
CJZ'OQftdvaUr and an not apprapriau u apply u the efflueM
di.cbaZ"CJed froa thJ.8 UeatMR ayfta iDU the ABibry .8VU foZ'
tnnapoZ"t ~ the ftP. IIonver, the JN88Z'ical ftaDduda conuined
in the.. rec:aUy revi88d 1'8CJU1a~ioD8 V8Z'8 ccmaid8nd relevant anc!
appZ'opZ'iau ~ apply u t.bi8 %JtA Ueat88D~ ayRa 1a oZ'CSu to
pntec:t: potenUa1.1y iIIpa=- fJZ'OUDdva~. Tb8 policy .utad in
Section 3.1l.5.C.4 1188 foll0W4 concemirMJ abted dat8Cticm 11aita.

Tha COlondo lu1e St!.andard8 &Del l181:bo.lolog1.. for Surface
WaUl:' 3.1.0 (5 CCIt 1002-') (CUll) van revi-- &lid ~ conaic!8Z'8d
applicBla ~ t.b18 DA 1:na~ 8781:88, vb1c:b do88 not dJ..c:barge
efflu~ in~ ~aca _ten. Tba effl~ fzoaa t.bi8 ~ tnataent
.yaU8 nca1.,.. further Ueata8n1: a~ the RIa s.q. ftaatMM Plant
prior ~ di-"81'9. ~ I'~ Cr88Jc. Th- ftaDduda, Ii...er, an
cOIUl1d8nd Z'8l~ 8DII a~opr1au ~ apply ~ thJ.8 ~ U8abunt
.yaU8. ft8 Amf tau 88l8Ot8d the 8tandard8 at 3.1.11, Tabl. C and
th. Aqr1aa11:aft1 ftaDduda fZ'C18 Table. II aDd IIX, for C08pGUDcSa
anticipa1:8d ~ - 1D tb8 affluen~ a. rel8Y8.M &lid appZ'Opriau due
to P1rn CZMk'. d8819D8~1OD a. Cla.. 2 r8CZ'aaUOD, Cl... 2 van
waUl:' aqaatia l1f. &lid A9r1cu1tur&l vatera. ft8 ~= conbinad
in CBSII 3.1.14 (9) 1188 foUOV8d concem1n9 abted em 11a1ta.

Peden1 .a~u Qaa11~ CZ'1~eZ'ia (PWQC) ven rev18V8d and
conaldered ~ appl1cBl. ~ thi8 IRA .inee they an p1c!81ine.
aDd no~ enfoZ'C88bl. 11a1b~ioD8. Th1. IRA will di8cbazog. b= the
.anituy ..war fZ'C18 1:Z'aD8poZ"t = the RICA ftP for further tZ'8ataant.
,

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ne cU-"-"Ve tzoaa the STP 1. lWted by the etfluent l1a1tation.
con~1.n84 1D the MPDU pum,t, Vhid1 an developed to prot8C1: the
u... ot tM vatUV8ya receiviDq the di8d1a1'ge. Con81.1:8nt v1tb the
PrOPO." .:.,' r8C8ft1:1Dfomat1on concemiDt COIIpOUnda tor Which
FWQC ex18~ - rev18Ved, 1Dc1wtlng Rat8Z'8DC8 Do... CRtD) ancI Unit
Ri- CUB) 1Dtoma1:ion, 1:0 detan1D8 Whetbu 80re c:urnat data
exaa the tba~ retl8Ct8d iD tb8 PWQC. COn81Ru1: v1th th.
PZ'opo.ed RCP, the IIOre Z'8C8ft1: dab - uUl18ed and ~11:uUd .'1'0 '
Ie cona1d8nd8 ('1'IC) Rudu'd8. Uftdc th- c~, PWQC
were no~ c::ona148Z'8d ral~ and appzapr1au 1:0 apply 111 th.
context of 1:1118 ~ vben IIOre ~ dab 8Xi8t8d trail vb1d1 a nc
coul4 be det8miAed.
Ift omu- 1:0 pZ'CW148 ad8qaau proac:ticm ot pub11c h8al th anet
the emriroft88D1:, 1:h8 Arar baa 4~'" tha1: ..¥..~ c:cm~t
Level. (MCI.8) ..1:abliabeel uncIu the Sate Drt"1P~,,, .atu Act are
r81evan1: and appropr1au 1:0 apply vithin tb8 c:cm1:eft ot th18 nA.
ne Ar8Y has al80 cI81:8n1neel tba1: the preUut:uD1: 81:aIIdud8 ot 40
CPR I 403.5 1.8U8d panuan1: 1:0 the Cleu .a1:81" Ac:1: an nlevant and
appropr1au 1:0 apply 1D 1:h8 COft1:8xt ot th18 Dt&. fte AZ'8y believ..
that th- l1a1bUona, 111 conju=1cm w1th the identified
.bndu'd8 tZ'all the CBSII and CISG, vUl pro1:8c:t the tIm=101Un9 of
the STP and Z'88ul1: 1D aD ettluent vb1d1 dou DR r.praent a
potent1al 1'1- 1:0 hUUft heal t:h and tb8 811V1r\:m88nt. ft18 ettluent
v1ll theft ))e turthu 1:na1:8d at the lUG ftP, 1D conjunct1oft with
othu ~lU8ftt ~, an4 be re1...eeI pursuant 1:0 the ODES
pera1t.
Several c:oapcnmda, a1: praent, only have xer. prapo.ed or have
othu health .tt8Ct8 1Dtonat1on with a hip d8CJr88 ot
c1'8d11:ab1l1q availule vb1d1 d088 not COM v1tb1n the d.t1Dit1on.
ot applicable or relevant aDd appropriau~. Th...,
vb1le not DY8, are c::ona1dued in the 4..1911 ot tbe 8Y81:a. Th...
coapounda are l181:8d aepan1:8ly .. 'rBC8, COD81~ vit:h th. lIa.
POl' .088 ~~, no ARM or 'tIC .tandaz'4 - id8ft1:1tied. Th...
c08pOUDd8 include 8ic:yclobepQ41ene, p-c:bloraphay188thyl 8Ultur
COllpOUDU, D1t.hiaD8, D18et.hy14i8Ultic18, Pl~C8tic Acid, I8odrin,
Malat.h1on, ODtb18D8, ftiocSi91yeol, Supcma, aDd Vapona. In order
to ))e pro1:8c:t:1"., the Amy vill apply uy R-..tial Action
Objec:1:1v- la1:81" d8ft1aped 1D the Pinal ot~ Din Z'8poR to the
'exten1: p1"8GUeable 1:0 tb- coapouncI8. .

'fila cb-~ca1-8P8C1t1c ARAR8 et.~eeI relevant anet
apprapriaa 1:0 apply 1D the context ot 1:1118 %ItA ana
"

-------
C~
Acrylon1t:U. 2, '00 WJ/l
AldriD 0.1 WJ/l
Araenic 50 WJ/l
Benz 8ft. 5 WJ/l
cadll1ua 10 WJ/l
camon 'l'.tncb1orid8 5 WJ/l
Chlonana 0.1 WJ/l
Chloride 250,000 UIIl
ChloRbanZ8D8 300 WJ/l
ChloZ'Otom 100 UII~
c:bZ'a8iua 50 WJ/l
COpp8Z' 200 11911
DD'l' 0.1 WJ/l
DOl 0.1 Ul/l
1,4-Dicb1oZ'Ob8na8D8 75 WJ/l
1,2-D1cb1oZ'08~. 5 WIll
1,1-Dicb1oZ'08t:byl8D8 7 WIll
'1'nn8-1,2-Dicb1oZ'08thyl8ft8 7 WIll
1,2-D1cb1oZ'OPJ:'DP&ft8 , u9/1
D1eldr1D 0.1 WJ/l
1Ddr1D 0.1 u9/1
fthylb8fta8D8 '10 WJ/l
rluorid. 2,000 WJ/l
Buachloroc:yalopaU41aa 49 WJ/l
Lead 50 WIll
Mucuzy 2 WJ/l
pan1:h1cm 0.3 WIll
'l'8~cb1oZ'08t:byl8D8 10 WIll
'1'olu8D8 2,420 WJ/l
1,1,1-'h"icb1oZ'08~ 200 WJll
1,1,2-'h"1cb1oZ'08~. 21 u9/1
ft1cb1oZ'08t:byl8D8 5 WJll
Vinyl Cblor1d8 2 WIll
Z1ftc 2,000 WJll
Saurca
CI8II
CBSQ
40 era I 141.11(b)
40 era I 141.'1(a)
40 era I 141.11(b)
40 CPa I 141.'1(a)
CI8II
C88Q
C88Q
40 CPa I 141.12
40 CPa I 141.11(b)
C88II
C88II
CI8II
. CUG
40 era I 141.'1(a)
C880
40 era I 141.'1(a)
C880
C88Q
CUll
C81G.
CII8
C8IG
40 era I 141.11(b)
40 era I 141.11(b)
CII8
C8ICI
C88G'
40 era I 141.'1(a)
CII8G
40 era I 141.'1(a)
40 CPa I 141.'1(a)
"csa
ft. tollov1Dq RudaJ:d8 an '1'8C8 and vill be COft814.nct iD the
cS..1p of t!a18 tnat88DC 8Y8~ and 8CN9bC to be aua1ne4, it
pra=1cUl..
'!'Be L8v81
Aldr1B
AtZ'a.1D.
c:adll1ua
Chlordan.
ChloZ'08ce1:ic Acid
ChloZ'Ob8Da8D8
0.002 uCJ/l
3 U9/1
5 U9/1
2 U9/1
70 U9/1
700 u9/1
17
Saurca
DA UIt (10(-'»
54 n 22093
54 n 22093
54 n 22093
DA am
DA JttD

-------
.'
Chlorofoar- I uCJ/l
Cop~ 1,300 uq/l
DD': 0.1 uq/l
1,2-D1b~=.1 3-ch1oropropane 0.2 uq/l
1,1-DicbloZ'08~e 0.4 \19/1
1,1-Dicbloroethylue 0.01 UCJ/l
Dicyclopent&4iene 1,050 UCJ/l
Dieldrin 0.002 uq/l
DDIP '00 UCJ/l

Etby1b8nzene 700 WI/l
IKPA 1',800 ug/l
L8acl
Methylene Cbloride
lIethyliaobu~l u=ne
Parathion
'l'et:rach1oroethylene
1,1,2-ftich1oroe~ne
'l'oluene
Xy1en.. ('loul)
Zinc
5 1J9/l
4.8 U9/l
1,150 ug/l
210 u9ll
5 UCJ/l
0.' WIll
2,000 uV/l
10,000 UCJIl
1,000 UCJ/l
UA am
53 rR 31511
UA UJt (10(-1»
54 rR 22013
UA va (10(-1»
UA n (10(-1»
IPA am
UA n (10(-'»
DA II8a1th
Adv180ry (Dee 88)
54 fa 22013
U&\RDL Tecb.
18p. 8302 (OCt 84)
53 fa 3151'
UAUD
znUD
UAUD
54 fa 22013
UA n (10(-1»
54 Fa 22013
54 rR 22013
UAUD
.
Air bi..iona
fte 8taDdud8 collu1n8d a~ 40 en PU't 50 VU"8 nvi8V8d.and
de~8r8in8d = be neith8Z' applicable lIor n18ftD~ aM appropriate
~o thi8 IRA. ft- 8t:aDduda apply = AJz Qaa1i~ COzauo1 R8qioft8
(AQCR), vh1cb an 1lUk8cUJ' cli88ia1le f~ the ana tha~ ..y be
aff8Ct8cl by the openUOil of aD air 8trippw cSar1D9 ueatae= by
. thi8 IRA .,8U.. The ca8pouDda = be ueaUci by thi8 %M ~tMnt
8Y8t- are 8U'Dd1y cIi..ia11ar = the =1U1-ia pollut:aD1:8 r89UlaUd
1)y 40 CPR Part 50 ad th... ub18ft~ air Rudarda are D8ithar
d..1gned foZ' DOZ' DOmally app11ed = apecU1c 8818810118 8GaZ'C88
8ucb .. aD air .u1ppinq syaUa, ..1PiDg th..e 81:udar48
inappropr1ate = apply 111 the cozat8Xt of th18 UtA. WbUe th88e
8taDdud8 clo za= apply = the 8p8C1f1c _4 ..10118 f~ tM nA
u..ta8ft~ 8)'8U., tb8 8)'81:88 v11l be CODtnll8d aDd 8OD1tond 80
tba~ a1a810D8 fZ'CIIII 1~ do n= cauae .XC""'~JtCM of ub1~ air
81:&ndam8 1a .the AQCa.

'fb8 8t:udard8 CODta1ned a~ 40 en Part8 '0 aDd '1 vue
revi-- aDd d8UZ8in8d not to H appl1cable = air stripper
opera~iOll8 ccmcSuc:t8d .. ~ of the u..~ by tbi8 ID ~.
fte.. 8t:udard8 apply = spec1f1c 80UR88 of tb8 l18Uc1 poll~.
POZ' ."...,18, Subpart . of 40 erR Part Ii app11.. = ~ VlUcb
procu8 ~ on = rec:av8Z' 88Z'C:UZ7 ad 01:bu .,.cif1c
proc.._, Subpart 3 of thi8 Part appli.. = 8OQZ'C88 vb1cb 1Dc111d8
equ1paan1: vb1cb contains OZ' c:cmtaC1:8 a fluid that 18 at 18881: 10
- perc:8D~ beD88ft8 by ve1_~ aDd the anaic prcw18i0D8 of hbp&rU
,

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M, 0 and . of this part apply to v.ry .pecitic planta, -It.1"8 or
taciliti... liDc. th. air .tripper operations contaplat8d by thi.
I1tA tr..L.aDt. ay.taa U8 utnaely eU..Wlu tn8 the pnc:u...
4..cr1b8d iD 40 CPa Part '1 and the liqa14 COftC8Z'ft8d 18 a180
8Xt.r_ely cU..iailar to the liqg14 eS-=1b8cI ill Subpart: 3 ot 40 en
Part '1, th- RaDdarda V8N also D~ CODIIieSU8CI to be re18ftftt
and appropriate to apply to tIU8 %1tI. tnat88ft aysta. Bov..,u
a. eSi8CU8.ed iD S-=ion 3 collC8Z'ft1ftg ac1:1on-apet;itic AIWt8, th~
Ar8y vill apply b88~ pn=icabl. control t--rbnolocw to air stripper
eai..iona.
'!'h. prcwi.iona conb1n8d iD (0 en Put '0, Subpart: D vill
be conaicl8nd re1~ and appropriate 1:0  apply 1:0 8ft!' .1:oraq.
v....l. with a capacity CJ%88~ tbaD or eqaa1 to 40 cubic _t.ra
that i. U88d to .ton volatile orpnic liqg1cSa iD the ccmUXt ot
this IRA. only 11a1~ prcwi.iona ot thi. ~ attect 8tORq.
v....l. with a 48.ip capacity ot 1... tbaD 75 cubic -1:8ftI.

'!'h. policy contained in 0S1IZIt D1nc:Uve 9355.0-28, elated Jun.
15, 1981 i. a TBC tor the operation ot any aJz auippu iD th.
context ot this DA.

'!'h. pZ'O'Yi.i~ ot 5 c:c:a 1001-10, lt89UlaUon ., S8Ct1on IV
conc.ma9 88Z'CaZY 881a.iona, 11a1tiDJ neb -i..1ona to 2300
qr-Itiv. poaD48 per clay, an coft8i4u8d nl8Y8Dt UId a~opriate
to apply to t.h18 tna~ aysta.
'.2.
LocaUon-ap8Citic ~ts ..t re.ui=iona Oft activit1..,
4.pen41ft9 OD the c:barac:t8ri8tica ot the .i1:8 or the ~-edlate
envirolUl8ftt, ad ~iOD 11k8 a=ion-8p8Citic r8qaUaeDt8.
Altez:naUv. n88dlal a=iona ..y a n.tri~ or pnc:lu48cS,
4.pendinq Oft tb8 locaUon or cbanc:tui8tica ot tb8 .ite aDd th.
r.qu1naenu t.ba~ apply to i~.

panCJZ'8pb 44.2 of the Fed...l 'acility A.g%HMD't prcwicS88 that
.v11cUit. bUita~(.) 8ba11 be pr888r18cS aDd "'9ed .. D8C888azy
to protect: udan98Z'8d apec:i.. ot vilcUit. to tb8 atam: reqg1re4
by the IDdaDIJ8nd 1p8C1.. Act (11 V.S.C. 1531 ft .acr.), a1qn.t.ory
bircS8 to 1:118 ~ reqgJ.n4 by the IUqn1:ory BireS ft'Uty ~ (1'
O.S.C. 70J ~ .acr.), aDd baleS "91.. to the at8Dt reqgJ.n4 by the .
BaleS Ba918 ftOt8Ct1on Act, l' O.S.C. 6'8 at: .acr.8

WbUe tIU8 pZ'O'Yi.ion 1. not an AJtAJt, 1:118 .uatu cit8cS
then1D an UU8, applicabl. ~o thi. 1M 8Dd vUl be callpli8cS
vith. _ed OD wen thi8 tnataent 8Y8t- rill be located tb8 Aray
ali.v.. t.ba~ th18 1M will have no adv81:88 iIIpa= Oft any
endan98nd apeci.. or aifJZ'81:ory birds or Oft the p~iOD ot
vildlit. bUitats. coo~tion vill b. aiD"!"'" v1th th.0.5.
,

-------
w
Fiab aM WilcUife Se1'Yice to en.ure that no .u= a4vene apact.
ari.e. fraa i8pl..entatioD of thi. IRA.

Th.. pzovi.iona of 40 CF.R '.302(a) and (b) re;ard1nq
con.tru=iOll that would have an adverse 1apac:t OD wetlanda or be
wi thin a flood plain are conaidered rel8Vut and appropriate to
apply in the context of t.h1. 1M. .... upon ¥here t.h1. IIY.t-
will be locatacS th. Ar8Y ~i8V" that there will be no actvene
iJlpac:t on weUud8 fraa t.h8 COD8tJ:w:tion of t.h18 ayata.
COOrdination will be _intain8d with the o.s. Piah and WilcUite
S81'Yice .to 8ft8U1"8 that any .ucb adverse 1apac:t8 are avoided or
81tiqated. .

The 1"8C)Ulationa at 40 en 230 van revi8V8d an4 detanined not
to be applicUle v1t.h1D t.h8 con~' of t.h18 DA because on
di.cbarve of 4r8dqed or fill _teria1 into vatara of the United
state. i. conteaplat8d. BecaU88 th... r8IIJU1ationa acSdr8.. only
the diapoaal of 8UCb _terial. into vatara of t.h8 onitecl State.,
which i. not coDt88p1at8d, they are not cona1cS8r8d to be relevant
and appropriate to apply in t.h8 context of t.h18 ~.

The r8C)U1ationa at 33 CPR 320-330 wen r8V18VecI an4 deterained
to be neither applicable nor relevant and appropriate because the
IRA treaCl8nt ayat8a d088 not 1nvolve any of t.h8 activiti.., or
.181lal: to the ac:tiv1ti.., intendecl to be contro11ec1 by the.e
requlat10na .. defined in 33 CF.R 1320.l(b).
8.3 A~OM-spz~nc: ARARS
D8scri'Dt:ioft
Performance, d..1qn, or other act10n-apecific requ1r..ents
.et control. Ol: reraictiona on activiti.. related to the
man&q8ent of bazad0u8 aub.tancu, pol1utaDta, Ol: con~..h'ant..
The.e action-spec1fic' requJz8ll8ftta -y ap8C1ty particular
perfor88Dce level., act10D8, or technolOCJi.. .. ve11 .. .pecific
level. (Ol: a 88thocSo1OCJY fOl: .ettiD9 apecific level.) tor
di.cba%'9ed Ol: naidual chaical..
C:Clft.t:ru~ioft o~ ~.~.ftt: Svst:e.
Air WIIts.iOft.
on t!I8 l:aate po..U,i1ity that then -y be air eai..ion8
durin9 t.h8 COUZ'8. of t.h8 conatruction of t.h18 tnataaftt IIY.t..,
the Ar8'/ baa l:8V18V8d all potential ambient Ol: ("tt-tea1-.pacific
ail: eai..ion ~ta. A8 a re.ul t of t.h1. revi8V, the Army
found that then an, at preaent, no National or state aabient air
quality .tandarcS8 curnnUy applicable Ol: relevant and appropriate
,

-------
~o any af. th. vo1a~11. or .881vo1a~11. Cb881ca18 in th. 9rOUn4
vater tauDI 1D th. &r8& 1D Vh1c:b conaUuc:t10D 18 CODtapl.~84.

%8 ~ con~ ot tb18 %M, th8Z'8 18 only a v~ ZW~Clte =anc.
ot any 1'81- ot vola~11- or 8881vo1a~11- and, .... 1t neb a
r.l.... cUd oc:c:::u, 1~ vaald only be 1Dbm1~ aDd ot VU7 br1.t
dura~10n (b8caUH tb8 ac:t1v1q tba~ pZ'Oduc8d the nl... VWl4 ~
8topped and 8OCUt18c1 appnpria~y 1t a 8198it1c:a= air 881..1011 '
V88 d.u=8cI by tb8 con=.c:tor'8 aU 80D1~ 8p8C1811R). ft.
Amy baa .1pit1c:a= 8"CpV18DC:8 with tb8 ~1oa ot 8Xt.nC1:1011
and l'81nj8c:t1oa _118 aDd baa n= ~1aaed any probl- troa air
ai..10na cluZ"1Dt COD81:nc:t1aa ot. 8UCb tac:111~1_. '1'JU8 %M d088
no~ con1:88plab COD8~oa ot vall., tbent01'8 al80ft 81i.4".~1n9
any c:banc8 ot au 88i881088 clv1D9 ~oa. ft8 COD81:nc:t1on
ot tac:111~1_, 1Dc:1ud1n9 any d~ontaa1naUoa pada, 18 ~ ap.C1:e4
= 1Dvolv. ucavaUoa a~ deptba wbicb c:cN1d naal~ in 1'81.... ot
vola~11. 0qanJ,c:a, ..1dDJ any 811b18D~ air qaal1~ 81:andazd8 ne1ther
rel8V&n~ nor appropriau ~ ~. coutzucUoa a=191q. IIoDitorin9
v111 b8 conduct8cl puraaua~ ~ th. .1te-8p8c:1t1a l18altb aDd Satety
Plaa ~o 8ft8UZ'8 tba~ COD81:nc:t1aa ac:t191~1.. do, 11ft Z'88U1~ 1D
rel..- ot vola~11. oqazUc:a VlUch c:ould adY8n81y 18pac:t mm1et
a1r quaJ,1q.

The 81u"'apec1t1a l18alth 8JId Sateq Pla vU1 adequat.ly
a~8 ~... COftC8ZD8. 1'h18 plaa ~ be d898loped tor 1188 1D th1.
IRA v111 d8uU th. 81u 8Ofti~r1nv PZ'OClZ" ad detine any
op.ra~1cma1 8OCU.t1ca~10D8 ~ b8 18p1888ft1:8d 1n the 8Y8D1: aoD1 ~or1n9
d.~8C1:8 apac:1t1a 18Y818 at 8uc:b -i..10na. Th18 pIa 18 d8Y.lop8d
at1:v 1:.b. actual' COD81:nc:t1oa 81u ba8 b88ft ch088D ad 18 ba.ed
upon .11:8-apac:1t1a 1ntonaUoa. %~ v11l be a..Uabi. tor rev1ew
la~ 1n 1:.b8 %M proee8..

ft. Ha~1anal ~4..10D8 SUndarda tor aa8ardoaa AU Pollutant.
(HUIIAPS) V8Z'8 ..,.lua1:84 ~ d8~U81n8 vb.1:b8r tb8y V8Z'8 app11c:abl.
or r.l8Yu1: and appropr1au ~ apply in 1:.b8 ~ ot couUuC1:1on
ot 1:.b18 DA. ft- Randud8 W8Z'8 ft01: cou1d8nd app11c:able
b.caUH 1:.bey apply ~ RaUonuy .0UZ'C88 ot the.. pol1uUrla, not
~o cona1:Z'Uc:t1oa ac:t191 ~. They V8Z'8 DR COft81c18Z'84 rel8Y8ft~ an4
appropr1au b8caue tb8y W8Z'8 48V81oped tor llUNtactur1n9
PJ:0C88_, vlUch an .1p1f1c:aUy 418811111u ~, tb8 8bo~-tera
conaUW::Uoa aft1v1ty CODh8plat8d by tbi. %M.

ft8 ..-181088 of 40 en 50.' vi11 b8 COft81d8Z'8d 1'818Y8ft1: an4
appz-opd,au. ft.18 ftaDdard 1. no~ app11cab1. Mc:aU8 11: addr8....
Air QaalJ.ty COntnl "'1088, vb1ch are &r8&8 81p1t1c:aaUy lU'98Z'
tbaa aDd cUtten= traa tb8 ana ot conc:am in tb18 %M. Punuant
~o thi8 N9U1a~1oa, tb8n .111 be no part1ca1au ..=u- t.ran8port8d
by air troa 1:.b8 81u tba~ 18 in ace.. ot 50 UCZ'-.k'" ~ cubic
..~v (annual 98G88t:r1a 88aD) and 150 a1a-.~... ~ cub1a ..ter
"
21

-------
(maxUnm 24-bour concanuat:ion) vill not: be axceeded .ore t.han once
per year.
.
Air g~riDD8r oeera~ion.
Since an air stripper is use4 1ft conjunc1:10n v1th the
ueat1lant: syst:.., the Ar8'/ v111 treat the prov1s1ona ot Coloracio
A1r Pollut:ion Con1:rol R8gUlatJ.cm 110.3, S8C1:10n IV (D) (3) (a), as
relevan1: and appzoapriate u4 vUl use best pnc1:ical conUel
technolO9Y. Thi. requlat:1on is not applicable because the In
t:rut1lant: 81'st.. v111 not be a -jor stationary source, as 4ef1neci
in that r89Ulat1cm. Also cona1cS8nd rel8YUt aDd appropriate to
operationa are the provis1ona ot 5 CCR 1001-14, R8qalation Mo. 2,
concemin9 ocSo~ eaissiona.

The air stripper vill be OPerated so that it vill not cause
axceeciance. ot the tederal &abient air suncSard8 liste4 in 40 CrR
Part 50 and Sta1:8 abient air st:ancSard8 conta1ft84 1ft 5 CCR 1001-
14.
Workar Prc~~ioft
The provision ot 29 en 1910.120 are applicable to vorkers at
the site because th..e prcwisiona specifically addre8s hazardoua
substance r..ponae opent1ona under CERCtA. It sbould be note4
that th..e ac1:iviti.. are. pruent:ly CJovern84 by the 1fttum rule
founcS at 29 CPR 1910.120 but that by the tJ.ae IRA ac1:ivity
cOll8ence. at the si1:8, the tinal rule tound at 54 PR 9294 (Karch
S, 1989) v111 be operative. (The tinal rule be~ effective on
Karch S, 1990.)
Canaral Con.~ru~ion A~ivi~i..
The tollov1n9 performance, cies1qn, or other ac1:ion-apec1t1c
state AlWt8 have ban pr811Jl1nar11y 1cient1t1e4 by the Aray as
applicable t:o conatruc1:ion ac1:ivities conciuc1:e4 PUrSuant to this
:XU:
Colorado A1r Pollution Control commission R8gUlation Mo. 1,
5 CCR 1001-3, Put I%%(D) (2) (b), Conatruc1:ion Activ1ti..:

a. ApplicabUity - At1:a1maant an4 Monatta1mlent Areas

b. G8Mnl Requiraent

Any owner or operator enqaCJed in clearinCJ or lev81inCJ ot laneS
or owner or operator ot lan4 that: bas beaD c1ur84 of ;ruter
than one (1) ac::re in nonattainment: are.. tor ¥bieb tUCJitive
particulate eaiss10na vill be ..itteci shall be requ1re4 to use
all available and prac1:ical .eth04s whieb are technoloqically
"
. 22

-------
t_Da~ ud 8COnaaJ.cally raaacmab18 1D on.. to _f"i~ia. 8Uc:b
-4-1.., 1D accoZ'daftc8 v1t.b the ~u ot S~1oft
III.D. of t.b18 A9'11a~1cm.
c. a,Pl1c:ab18 881881cm L!a1bUOD Ga1da11D8
loth the 20t apaa1~ ind tile DO off~ tnupoR
a1a81ol1 11a1b~10ll fJQ14.111188 ..11 apply to conrczw:t1011
acc1v1~1_, a:capt tba~ vitia n8p8Gt to 8GUC88 OJ:' aCC1v1~1-
88aoc1aUd v1t.b conrczw:t1011 fOJ:' Vbic:Ia Can an 88pUau
~ 8ft toZ't.b 1D t.b18 nplaUOII, tb8 -1..1cm .
l1a1taUOII fJQ1d.111188 tb8n .,.elfl84 .. ,appllcab18 to 8Uc:b
8GUZ'C:88 and ~v1U.. 8ba11 - 8ft1_Ud tOJ:' capll811C8 v1th
tb8 ~ of 8eaU.oa In.D. of ~ nplaUon.
(CZ'088 88f8nDC81 8Ub88cUona 8. and t. of 8eaU.OD III.D.2
of th18 nplaUOII).
4. CORnlll8a8un8 and Op8n~1Dt Pnc:e4an8
COnuol 8U8UZ'88 OJ:' open~1ona1 pZ'OC8d1zz'u to be aploy84 ..,.
lDclWS8 bu1: an 11ft MC888U'1ly l1a1Ud to P1.anUD9 v..,.ta~1011
COVV, pZ'DY1c11ft9 ~R10 COY8Z', va~~t~f c:al
8~U1a.UOII, ~O_, C08p8at:1D1J, -1ftf_t81nt area
1D t.b8 v1II1:8Z', viDd bnUa, and otb8Z' Mt!Ioda 01:' t-"'ftlqaaa.
.
COlondo Allb18ft AiZ' Qaa11~ 8~.rda, 5 c:ca 1001-14, Air
Qua11q. Jt8p1aUan A, D1M8l-Pav8n4 V8b.1al8 Wl8f..1an 8tudaZ'd8
toJ:' V18ib18 PollU1:aDU1

a. 80 penon 8ba11 88i~ OJ:' C8UH to be 881~Ud !.Db the
aaao8pban tZ'all any 41..81-pcnrand v8bJ.c18 8DY air
c:cmt._f""ft~, toJ:' a p8Z'1od CJT88~ thaII10 COD88Ca1:1V8 88Conda,
vb1c:b 18 ot neb a 8ba48 OJ:' cl8II81q. 88 to ob8can aD
ob88r'V'8 V181011 to . cl8p'M 111 .B888 ot 40t opac1~, with
t.b8 ~1011 ot ~ . belov. '

b. 110 penon 8ba11 88i~ OJ:' C8UH to be 881"-1 1111:0 tI88
atl108pb8n tJ:C18 8DJ' naanlly aap1nUd 41M8l-pcn1U'84 voicl8
ot 0Y8Z' .,500 1b8 4Jn88 v8b.1c18 V81_~ n~ opanUd abaft
7,000 t8ft c- - l898l), any aU tOJ:' . pari.o4
CJn&~ tbaa 10 ..e.:utlv8 8ac:cmda, vb1cb 18 of neb . -"-\It
OJ:' f -1_.. to ob8eu.n 811 ob88nv' 8 v181011 to . 4~.. 18
..~1'. of sot opac1~.

c. DiM81-pcn1U'84 v8b.1c1- exca8cl1ftcJ tII... ~ .".11
be ex & t fOl:' . p8Z'1od of 10 a1IIu~, 1t tb8 -1.-1.0118 an a
~ rua1~ of . cold 8ft9in8 8urt-ap aDd pZ'W1c18d tI88
v8l11c18 18 111 . 8bUOIIU7 po81~1cm.
,

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 ,.
: ~
,
. 
.
.
- .
-::
d. -!Ida ftaru'~rd 8ba11 app17 ~o ~ v8b1c1- 1n~8ft48Ct,
cS88. r1t , and 88DUfactund pri8ul1y tor 1Z88 1A e&n'Y1n9
. ar CU'9O on roada, Rneta, ed IUglnraya.
".~t"
Colarado 110188 ~t~ 8U~, C...I. 8-=1- 25-12-103.

a. lac:b ac:dYl~ 1:0 VlUcb tb18 uUc1. 18 appl1cUl. 8ba11
be conducUd 1A . ..~v 80 t!Ia~ 8117 110188 pz'Odueed 18 11ft
obj~ODabl. cIa8 1:0 ~~, b8a~ tnqaucy, or
~111nua. load 18981. af 110188 n41aUar traa" a propeRy
liD. a~ a cU.Ruce at ~tlv. teR or 8OZ'8 tbentraa 1D
ezee88 of tba db(A) 8RUll8bed tor t!a8 toUoviD; ~1M per10d8
&lid 80D88 ..,.11 c:aII8U~ priM taa1e -tAt.DCe t.!Ia~ 8w:b
1101.. 18 a pab110 ""tPftC8'
lQU"
_1c18n1:181
~181
L1CJh~~81
"IDdu8U"1a1
7100 a.a. 1:0
~ '7:(»(» It...
7100 p.a. 1:0
"8ft '7:D(» a.B.
55 db(A)
'0 db(A)
70 e(A)
80 db(A)
50 db(A)
55 O(A)
.5 db(A) .
75 db(A)
b. IA t!a8 baan be'tn8D 7100 a.a. and tba ~ 7100 p.a., the
1101.. 1.".1. pen1~ ia nbaec:U- (1) ot tb18 .ec:t1OD ..y
be acr..88d by Un db(A) tor a perlod of 11ft 1:0 exceed
tl~88D a1mau. 1D UIJ' one-bOUZ' perlod.

c." Pu"iocSJ.o, iapal.lve, ar ~111 1101- 8ba11 be conaldar8d
a public nai8UC8 vb8D nc:b l1Oi- an a~ . 80ad level ot
five e(A) 1- tIWa tbo88 118ted 1A IUpaft (a) of thi8
--=lon.
"d. ~OD" P=jec:t8 8ba11 be nbje= 1:0 tba ...,4-.
pez81aa1bl. D0188 189818 8p8Clfl8d for ~ 80D88 tor
tba period wi1:b1a VlUab ccmauuaUaa 18 1:0 be C08plft8Ct
~ 1:0 8IIF applicabl. COnRncUOD pen1~ !an8d ~
P&;~J-..81It:JIorit:7 OZ', if 110 ~i88 l1a1uU- 18 i8p088d, tor a
" . period of u.. for coapleUOII of tba praje=.
~
.. Jir tba pupa.. of tb18 article, ~t8 with 80unct
lna1 88t8n ."'.11 be 8ad8 wen th. v1D4 v81oo1~ a~ t!a8 ~1ae
aDd place of 811da 88Uura8ft~ 18 11ft 80ft tUn tive 811- par
bou1- .
f. In all ~ 18V81 _aur..enta, COft81d8n~1011 .8bal1 be
91v8D 1:0 tba .tt~ of t!a8 ub18ft~ 11018. 1898l cnaUd by the
,

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ana Ir...1n9 noi.. of the 8IWiz'on88m: froll all IIaa=88 a~ the
~m. 8DI place of 8W:b 8GWId 1..81 --=-au.

In 8U8UDUV8 fulfUlMR of Colondo AU Pol111U0D CODaol
c~f..i- bp1a~icm .0. 1, t!d.8 Da v111 ...lay tb8 '8p8Gified
_~0d8 for -tftf_f81n9 -f..1oa fna fu81 ~ eqaJ.~ and
conatnCtion ac=lviUM. 1D 8ab81:aDUve falf11'", of Colondo'.
Dl..81-JIaV8nd Vutc18 -f_1oD ftUdazd8, - tiM81l1OCOZ' v8b1cl..
...ocia1:8d v1t1a tb8 aoaRnet1cm "'~11 .. apen1:8d 1D a -..r tJsa~
v111 pJ:Odw:8 -f..10118 1D atM.. of 1:11088 8p1~1f1ed 1D thu8
.t8ftd8rc18. .
.
ft8 _1M 18Y8l8 ~ for aoaRnet1cm aaUri~ PftWlded
in c..... Sec:t:1an 25-12-103 vi11 be a~ill~ 1D .~-- vith
t.b1. appllcab18 Col0nd0 R8=~.
..t:.llU'td8 Ymal iea.t:.itma
ftJ:'CIu9!a 881:18aUcm of tb8 98D8Z'81 ana vb8n a 8Y8Ua would
be loca1:8d, tb8 AnIy do88 no1: bel1... tba~ 8117 V8U8Dd8 c:aa.1d be
adven81Y affec:t8d. Havey8Z', aUl a fiDal d8819D 18 881e=8d aDd
a fiDal .i~1n9 deai.icm 88d8, 1~ ~~ be d8fiDiUvaly deUm1D8d
tha~ DO 18pac:1: Oft V8U8Dd8 vi11 oocur. If tb8 fiDal .1u 881ectlan
aDdIoZ' d..i9D nRlU 1D 8ft f-.p-~ on V8U8Dd8, tb8 Any v111
rwiev tb8 Z'89'I1.~ ~1810ft8 ~ V8t18Dd8 f~~ ad
01:hu aPPZ'DPZ'iau pUUleM, and v111 PRc.'" in a --.Z' c:on8~8ft~
v1~ t.ho88 ~0'Ii810ft8. c:aon1na~lOft vi11 .. 8&izIta1.D8d v1~ the
U ... Plaia and W11dlif8 ...iea ~ 8IIf pot8ftUa1 18pac:t8 on
..u.... '
~ftd Di8De..l ..~iet:.ieft. and t.-av.t e~ sail
Then an no ~ian-Q8Clf1a AIl\Jt8 tba~ pu'tain = the
acavaUOft of 8011 dDZ"iDg tb8 ~Oft of tIa18 U88tun1:
.y.1:a. '
DA 18 CQft8IIUy d8v81apiDg fJU1d.DC8 coaoemiDg the Led
D1apoaal b81:ri.=1ona CUlt). ftU8 pV'-- 18 11811:84, the Ar8y
has n= cI81:8z8b8d tIaa~ 8IIf vaR8 Rbj8c:1: a 1m vU1 be pna8D~
in tb8 ian1l8ft tnat8d bf tIa18 %M. lIOn plf-- 18 8Ch8du1ad
= be ~ pr1- b tb8 i8plaanu~iOft of tIa18 I& aDd the
AZ'8f vU.1;.Z8ri- t.b8.. .. tb8y an nlea.tId. If 1~ 18 d8Un1n84
tha~ a w.ot:8 81Ibje= a U8 i. pn88ft~, tb8 A%81 vi11 a= in a
-=- _iR8R v1t1a BPA 9Uidance ~- 1D effect foZ' the
"'9~ of n.c:b .. tb8 ~ of ('D~-A c1euaap ac=1ona.

Althc8wJb Z'aoval of 8011 f~ the ana vb8n =ut88R 8)'81:-
v111 be loca1:8d 18 a 'l'IC, no1: an AIWt, 1~ vi11 .. peZ'foal8d in
acco~-- vlt1a the ~ ..~ fo~ in the Ta8k 80. 32
T8dm1cal Plan, SUIP11D9 .... Budlin9 (HCW-h8P 1"'), and IPA'.
,

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..
July 12, 1'1., 888Onrutu- ~ .SPA 1t891on VIII ftoc:8dar8 tor
BancU1DI- of Ilatu1a1. fraa Dr1llJ.Dt, ft'8nc:b 1XeaY8~1on aDd
Decont-.4waUoa duriDrJ ~.a JaIn Op8n1:1ona a~ tIa8 Jtocky
KCND~ AnVl81.. In 98Mnl, any 80118 9uenUd by acava~1OD
cSurin9 the ccrane of t:IU8 ~, e1thc a~ nrface or 8Ub8vface
v1ll be re=med = the loca1:1oa fZ'08 VlUc:b tb8f or19bat8d (1.e.:
las~ O\I~, f1r8~ in). Any ...tuial. r--tniDIJ aftaz' C08pla1:1OD of
bacJtf1ll1D9 t.ba~ an 8U8p8Ct8d of b81n9 COftUa1DaUd (bued OD
f1.ld 8Cr88DiD9 t-baiqa..) v111 be p1"~17 Rored, 8Ulp184,
analyzed, and ul~18a~y cUapo.ed .. ",E_q~ baaazdaa8 ¥uta, as
appropr1au.

.

SludlJ" VlUc:b r--1B fza8 tb8 =-at88B ayaUa vUl be
.181l£ly 8&1189ed. 8ada ..Urial vUl be 8GZ"HMd aDd 8Ulp184 ~o
cSe~ 1f 1~ COD8U=tu baaazdcn18 .... aDd al80 1:b8 apec:1t10
..ur1al vUl be 8YaluaUd = ~ vb8tIa8r any LDIt8 ~- 1ft
effe= apply = 1ta --9~. ItDy suc:b -~1a1 will be e1~.r
8&1189ed OD-81u peDding la~ 418po8a1 or ~ for off-81u
cS1apo..l, .. cSa~ laur 1B~. UtA pRc". vb8D .on apec1f1c
1ntoma~1OD 1. cS8981ap8d. I~ 1. 11ft poa1bl. 1JII1:11 laUr 1B the
1M pr0c88a 1:0 apec:1f1ca11y 1~1ty ~ vb1= vUl apply
~ 8&1189888ft~ of 8w:b ..~1a1, ban... ~... an 98D8Rlly
cS1ac:ua8ed belov.
por ..ur1al 4ft8n1D8d to be baaudau nata, nb8tuUV8
RCRA prov1a10na an app11cable = tb8U 8&1189~. Th..a
8Ub8Uft~1ve prov1.1ona 1Dc:lada ~ an DR l1a1Ud =1 40 en Part
262 (SUbpaR C, PN-ft8n8po~ ~), 40 c:nt paR 213
(ft'anapoRu suMl-Pd8), and 40 en Pu1: 264 (hbpaft I, CoD1:a1ner
S=RCJ.). 'th. apea1fia 8Ub81:aftUv. 81:aDdazd8 applied vUl be
cS.~r81Ded by 1:b8 fac:=a1 CUcaaUDe88 of tb8 accatJla~1oD,
.=n9., or d1apo8al ~~bft1qua ac=ally app1184 1:0 any INCh
aaur1al.
'l'1l9ttr.
...
Th. Ar8f baa DR 1d8DUf18d 1B tb8 1Dn1l8D1: for ~ DA a
l1R8d ..au, .. 14eDUf1ed by SUbpaR D for. 40 en Pu1: 211. I~
.18 ~ bel18984 1:ba~ tb8 1BflQ8D~ for ~18 tnatMR. ayaUa v1ll
.D1b1~ 8IIf of .tJIa cbanat£~1C8 of baaazdowl vaRa 1d8aUf18cS
1ft S1IbpU'e C of 40 en. Pu1: 261 cIu8 to th8 low 1898l. ot
con~_.i""'" aD1:1c1pa~ 1:0 be COD1:a1De4 1B tb8 1DnU8ft~.
Thenf--.. ~ 3 of 40 en PaR 26. 18 DR cona1cSer8cS
applleU1. eo ~ UtA. llanVer, SUbpaR J of 40 en Pu1: 21. v1ll
be cona1"" nl~ aDd aPPZ'OPr1a~ = appll1B tJIa ~ ot
~1. IJtA 1:0 tua wb1cb an UH4 = 8=n 1 qu14 pr10r = 1"
tna~ by the DA ueatMM .Y.~_.
'"

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