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Pacific Southwest, Region 9: Superfund

Serving Arizona, California, Hawaii, Nevada, the Pacific Islands, and Tribal Nations

Omega Chemical Corporation

Superfund Site

Operable Unit #1

Administrative Record Index

To request copies of administrative record documents, an electronic order form is available.

This administrative record file contains the documents that the U.S. Environmental Protection Agency (EPA) is currently using to identify appropriate remedial activities for the Omega Chemical Superfund site Operable Unit #1 in Whittier, California. It is presented in compact disc (CD) format. The administrative record file will be supplemented periodically; it will be complete after public comments on EPA's Proposed Plan, EPA's response to comments, and the Record of Decision (ROD) are included.

This administrative record file also includes by reference the documents in the Omega Chemical Corporation Superfund Site Indoor Air Removal Administrative Record .

EPA welcomes questions and comments on documents contained in the administrative record file. Please contact:

Christopher Lichens
Remedial Project Manager
U.S. EPA (SFD-7-4)
75 Hawthorne Street
San Francisco, CA 94105-3972
(415) 972-3149
or:Jacqueline Lane
Community Involvement Coordinator
U.S. EPA (SFD-3)
75 Hawthorne Street
San Francisco, CA 94105-3972
(415) 972-3236 or (800) 231-3075


List of Abbreviations and Acronyms Used in Administrative Record Index

ABBREVIATIONMEANING
appAppendix
ARARApplicable or Relevant and Appropriate Restriction (or Requirement)
attchAttachment
CDMCamp Dresser & McKee, Inc
COBClose of Business
EE/CAEngineering Evaluation/Cost Analysis
enclEnclosure
EPAEnvironmental Protection Agency
frFrom
FSFeasibility Study
HVACHeating, Ventilation, and Air Conditioning
ltrLetter
memoMemorandum
MIPMembrane Interface Probe
OPOGOmega Chemical Site PRP Organized Group
OUOperable Unit
RAORemedial Action Objective
PRPPotentially Responsible Party
reRegarding
RIRemedial Investigation
RI/FSRemedial Investigation/Feasibility Study
rptReport
SDGSample Delivery Group
TLTransmittal Letter
USUnited States
VFLUXVertical Flux
VOCVolatile Organic Compound
w/With
w/oWithout
WNWWest Northwest

Administrative Record Index

Doc_dateAuthorAddresseeTitle_subjectDocid
1/27/2006Edward Modiano / De Maximis, IncChristopher Lichens / Environmental Protection Agency - Region 9Email: Discusses & transmits memo fr CDM re on-site soils RI/FS workplan addendum 2, summary of additional findings fr soil vapor & MIP sampling, w/attch1110552
2/24/2006Edward Modiano / De Maximis, IncChristopher Lichens / Environmental Protection Agency - Region 9Email: Discusses & transmits responses to EPA comments dated 2/8/06 re on-site soils RI/FS workplan addendum 2 - summary of initial findings fr soil vapor & MIP sampling (CDM, 1/27/06), w/attch1110501
4/14/2006Sharon Wallin / Camp Dresser & McKee, Inc
David Chamberlin / Camp Dresser & McKee, Inc
Christopher Lichens / Environmental Protection Agency - Region 9Memo: On-site soils RI/FS workplan addendum #2, summary of additional findings fr soil vapor & MIP sampling, w/TL to C Lichens fr E Modiano 4/14/061110499
4/26/2006Christopher Lichens / Environmental Protection Agency - Region 9David Chamberlin / Camp Dresser & McKee, IncEmail: Responds to email dated 4/25/2008 re proposed step-out location WNW of VP-29, w/history1110496
4/27/2006John Eisenbeis / Camp Dresser & McKee, IncEdward Modiano / De Maximis, IncMemo: Sub-slab depressurization testing results, w/TL to C Lichens fr E Modiano 5/3/20062157314
6/13/2006David Chamberlin / Camp Dresser & McKee, Inc
Sharon Wallin / Camp Dresser & McKee, Inc
Edward Modiano / De Maximis, IncMemo: Scope of work for HVAC & chemical usage inventory, w/TL to C Lichens fr E Modiano 6/13/20062157315
6/14/2006Calvin Tanaka / I C F Consulting/Laboratory Data ConsultantsEnvironmental Protection Agency - Region 9Data Validation Rpt: Case 32754, SDG Y1AM0, 3 soil samples collected 4/5/04, analyzed by A4 Scientific, Inc for semivolitiles, w/TL to C Lichens fr D Lindelof2156422
6/15/2006Stan Kott / I C F Consulting/Laboratory Data ConsultantsEnvironmental Protection Agency - Region 9Data Validation Rpt: Case 32754, SDG MY1AM0, 3 soil samples collected 4/5/04, analyzed by Chemtech Consulting Group, Inc for CLP total metals, w/TL to C Lichens fr D Lindelof2156423
6/15/2006Calvin Tanaka / I C F Consulting/Laboratory Data ConsultantsEnvironmental Protection Agency - Region 9Data Validation Rpt: Case 32754, SDG Y1AM0, 3 soil samples collected 4/5/04, analyzed by A4 Scientific, Inc for pesticides/PCBs, w/TL to C Lichens fr D Lindelof2156421
6/27/2006Edward Modiano / De Maximis, IncChristopher Lichens / Environmental Protection Agency - Region 9Email: Discusses & transmits soil vapor extraction pilot test work plan, w/attch1110563
6/30/2006Edward Modiano / De Maximis, IncChristopher Lichens / Environmental Protection Agency - Region 9Email: Discusses & transmits memo fr CDM re analytical results for final vapor probes (VP26, VP27 & VP30), w/attch1110574
6/30/2006Edward Modiano / De Maximis, IncChristopher Lichens / Environmental Protection Agency - Region 9Ltr: Discusses & transmits 6/30/06 CDM memo re analytical results for final vapor probes (VP26, VP27 & VP30), w/encl1110498
7/18/2006Sharon Wallin / Camp Dresser & McKee, Inc
David Chamberlin / Camp Dresser & McKee, Inc
Christopher Lichens / Environmental Protection Agency - Region 9Memo: HVAC evaluation & chemical use inventory results & proposed indoor air quality sampling locations, w/TL to C Lichens fr E Modiano 7/18/20062157317
7/20/2006Christopher Lichens / Environmental Protection Agency - Region 9Edward Modiano / De Maximis, IncLtr: Comments on soil vapor extraction pilot test workplan, CDM, 6/27/20062157318
7/27/2006Camp Dresser & McKee, IncOmega Chemical Site P R P Organized GroupSoil vapor extraction pilot test workplan, w/TL to C Lichens fr E Modiano 6/27/20062157316
7/28/2006Christopher Lichens / Environmental Protection Agency - Region 9Edward Modiano / De Maximis, IncLtr: Comments on HVAC evaluation & chemical use inventory results & proposed indoor air quality sampling locations memo, CDM, 7/18/20062157319
8/8/2006Sharon Wallin / Camp Dresser & McKee, IncChristopher Lichens / Environmental Protection Agency - Region 9Email: Discusses & transmits red-line & final versions of soil vapor extraction pilot test workplan (CDM, 8/4/06), w/attchs1110502
8/14/2006Christopher Lichens / Environmental Protection Agency - Region 9Edward Modiano / De Maximis, IncLtr: Approves soil vapor extraction pilot test workplan, CDM, 8/4/20062157320
8/18/2006Christopher Lichens / Environmental Protection Agency - Region 9Edward Modiano / De Maximis, IncEmail: Would like to obtain baseline indoor air data fr buildings identified in 5/15/2006 ltr before any HVAC modifications are made2157321
9/14/2006Environmental Protection Agency - Region 9 LaboratoryEnvironmental Protection Agency - Region 9Analytical testing results for OU 1 August 2006 sampling - project R06S92, SDG 06235B, 3 water samples collected 8/22/06, analyzed for VOCs, w/TL to C Lichens fr B Bettencourt 11/14/062156425
9/25/2006Environmental Protection Agency - Region 9 LaboratoryEnvironmental Protection Agency - Region 9Analytical testing results for OU 1 August 2006 sampling - project R06S92, SDG 06235B, 3 water samples collected 8/22/06, analyzed for 1,4-dioxane, w/TL to C Lichens fr B Bettencourt 9/29/062156426
10/5/2006Sharon Wallin / Camp Dresser & McKee, IncChristopher Lichens / Environmental Protection Agency - Region 9Email: Discusses & transmits 10/5/06 CDM memo re results of 9/06 indoor air & ambient air sampling, results for Bishop, Los Angeles Carts, Medlin North, & Oncology Care facilities, w/attch & forward to L Parnass 10/5/061110500
10/19/2006Edward Modiano / De Maximis, IncChristopher Lichens / Environmental Protection Agency - Region 9Email: Concurs that RI and risk assessment rpts will be submitted during second week of 1/07, & detailed schedule for groundwater EE/CA & on-site soils RI/FS will be provided on 11/1/06, w/history1110497
10/23/2006Environmental Protection Agency - Region 9 LaboratoryEnvironmental Protection Agency - Region 9Analytical testing results for OU 1 aquifer test split sampling - project R06S98, SDG 06261A, 6 water samples collected 9/14-9/20/06, analyzed for 1,4-dioxane, w/TL to C Lichens fr B Bettencourt 10/26/062156427
10/26/2006Environmental Protection Agency - Region 9 LaboratoryEnvironmental Protection Agency - Region 9Analytical testing results for OU 1 aquifer test split sampling - project R06S98, SDG 06261A, 6 water samples collected 9/14-9/20/06, analyzed for VOCs, w/TL to C Lichens fr B Bettencourt 10/27/062156428
10/26/2006Environmental Protection Agency - Region 9 LaboratoryEnvironmental Protection Agency - Region 9Analytical testing results for OU 1 June 2006 air sampling - project R06S72, SDG 06255C, 4 air samples collected 9/8/06, analyzed for VOCs, soil gas, w/TL to C Lichens fr B Bettencourt 10/27/062156424
11/7/2006Edward Modiano / De Maximis, IncChristopher Lichens / Environmental Protection Agency - Region 9Email: Discusses & transmits draft schedule for on-site soils RI/FS, w/attch1110495
11/15/2006Sharon Wallin / Camp Dresser & McKee, IncTom Perina / C H 2 M Hill, IncEmail: Discusses & transmits soil vapor extraction pilot test data - part 1, w/attch & history1110504
11/15/2006Sharon Wallin / Camp Dresser & McKee, IncTom Perina / C H 2 M Hill, IncEmail: Discusses & transmits soil vapor extraction pilot test data - part 2, w/attch & history1110503
12/8/2006Environmental Protection Agency - Region 9 LaboratoryEnvironmental Protection Agency - Region 9Analytical testing results for OU 1 fall 2006 soil gas sampling - project R07S08, SDG 06299C, 2 air samples collected 10/23-10/27/06, analyzed for VOCs, soil gas, w/TL to C Lichens fr B Bettencourt2156430
12/12/2006Environmental Protection Agency - Region 9 LaboratoryEnvironmental Protection Agency - Region 9Analytical testing results for OU 1 fall 2006 soil gas sampling - project R07S08, SDG 06313E, 2 air samples collected 11/8/06, analyzed for VOCs, soil gas, w/TL to C Lichens fr B Bettencourt 12/13/062156429
1/4/2007Edward Modiano / De Maximis, IncChristopher Lichens / Environmental Protection Agency - Region 9Email: Requests 2-week extension for submittal of RI & risk assessment rpts, & transmits reviesed schedule, w/attch1110506
1/5/2007Christopher Lichens / Environmental Protection Agency - Region 9Edward Modiano / De Maximis, IncEmail: Responds to request for extension for submittal of RI & risk assessment rpts, w/history2157322
1/19/2007Camp Dresser & McKee, IncOmega Chemical Site P R P Organized Group
Environmental Protection Agency - Region 9
Draft on-site soils RI rpt, w/apps A-B & TL to C Lichens fr E Modiano (w/o compact disc)2157367
1/19/2007Sharon Wallin / Camp Dresser & McKee, IncChristopher Lichens / Environmental Protection Agency - Region 9Email: Discusses & transmits rpt text, section 4 tables, appendix A litho logs, appendix A analytical summary tables, & appendix B groundwater partitioning calculations fr draft on-site soils RI rpt, w/attchs1110528
1/19/2007Edward Modiano / De Maximis, IncChristopher Lichens / Environmental Protection Agency - Region 9Email: Discusses & transmits updated draft schedule for on-site soil RI/FS, w/attch1110517
1/19/2007Sharon Wallin / Camp Dresser & McKee, IncChristopher Lichens / Environmental Protection Agency - Region 9Email: Transmits draft human health risk assessment for on-site soils, w/attch1110539
1/19/2007Sharon Wallin / Camp Dresser & McKee, IncChristopher Lichens / Environmental Protection Agency - Region 9Email: Transmits sections 1, 2, 3, and 5 figures, appendix A MIP logs, & appendix A physical properties results for draft on-site soils RI rpt, w/attchs1110545
1/22/2007Sharon Wallin / Camp Dresser & McKee, IncChristopher Lichens / Environmental Protection Agency - Region 9Email: Discusses & transmits revised draft human health risk assessment for on-site soils, w/attch1110546
1/22/2007Sharon Wallin / Camp Dresser & McKee, IncChristopher Lichens / Environmental Protection Agency - Region 9Email: Discusses & transmits section 4 & 5 figures for draft human health risk assessment for on-site soils, w/attch1110547
1/22/2007Christopher Lichens / Environmental Protection Agency - Region 9Susan Medlin / Medlin & Son Engineering Service IncLtr: Discusses & transmits results of indoor air sampling, w/encl2157333
1/22/2007Christopher Lichens / Environmental Protection Agency - Region 9Linda Ponce De Leon / Oncology Care Medical AssocLtr: Discusses & transmits results of indoor air sampling, w/encl2157334
1/22/2007Christopher Lichens / Environmental Protection Agency - Region 9Favrizio Arenas / Los Angeles Carts Mfg, IncLtr: Discusses & transmits results of indoor air sampling, w/encl2157335
1/22/2007Christopher Lichens / Environmental Protection Agency - Region 9Kevin McCormack / Bishop CoLtr: Discusses & transmits results of indoor air sampling, w/encl2157336
2/5/2007Edward Modiano / De Maximis, IncChristopher Lichens / Environmental Protection Agency - Region 9Email: Discusses & transmits appendices A-E for draft technical memo re soil vapor extraction pilot test initial findings, w/attch1110549
2/5/2007Edward Modiano / De Maximis, IncChristopher Lichens / Environmental Protection Agency - Region 9Email: Discusses & transmits text, tables, & figures for draft technical memo re soil vapor extraction pilot test initial findings, w/attch1110548
2/5/2007David Chamberlin / Camp Dresser & McKee, Inc
John Eisenbeis / Camp Dresser & McKee, Inc
Christopher Lichens / Environmental Protection Agency - Region 9Technical Memo: Soil vapor extraction pilot test initial findings2157337
2/6/2007Edward Modiano / De Maximis, IncChristopher Lichens / Environmental Protection Agency - Region 9Email: Discusses & transmits Figure D-3 fr App D of technical memo re soil vapor extraction pilot test initial findings, w//attch & history1110507
2/15/2007Lori Parnass / CA Environmental Protection Agency - Dept of Toxic Substances ControlChristopher Lichens / Environmental Protection Agency - Region 9Email: Discusses & transmits comments on draft human health risk assessment for on-site soils (CDM, 1/19/07), & draft on-site soils RI rpt, w/attchs1110508
2/16/2007Christopher Lichens / Environmental Protection Agency - Region 9Edward Modiano / De Maximis, IncLtr: Comments on draft on-site soils RI rpt (CDM, 1/19/07)2157338
2/16/2007Christopher Lichens / Environmental Protection Agency - Region 9Edward Modiano / De Maximis, IncLtr: Comments on human health risk assessment of on-site soils (CDM, 1/19/07)2157339
3/7/2007Sharon Wallin / Camp Dresser & McKee, IncChristopher Lichens / Environmental Protection Agency - Region 9Email: Discusses & transmits addendum to technical memo, soil vapor extraction pilot test, w/attch1110509
3/7/2007Sharon Wallin / Camp Dresser & McKee, IncChristopher Lichens / Environmental Protection Agency - Region 9Email: Discusses & transmits soil gas analytical results for VOCs - on-site soils RI rpt, historic soil gas analytical results for VOCs, & Figure 1 - historic sampling locations, w/attchs1110510
3/7/2007John Eisenbeis / Camp Dresser & McKee, Inc
David Chamberlin / Camp Dresser & McKee, Inc
Christopher Lichens / Environmental Protection Agency - Region 9Technical Memo: Addendum to 2/7/07 technical memo, soil vapor extraction pilot test2157340
3/10/2007Christopher Lichens / Environmental Protection Agency - Region 9Lori Parnass / CA Environmental Protection Agency - Dept of Toxic Substances ControlEmail: Full response to comments re draft updated text for section 6.2 of FS for on-site soils, w/history1110559
3/12/2007Edward Modiano / De Maximis, IncChristopher Lichens / Environmental Protection Agency - Region 9Email: Discusses & transmits tables 7-1 - 7-3, & redline & clean versions of revised sections 6.2 & 7.0 fr FS for on-site soils, w/attchs1110560
3/13/2007Lori Parnass / CA Environmental Protection Agency - Dept of Toxic Substances ControlChristopher Lichens / Environmental Protection Agency - Region 9Email: Concurs with conclusions in technical memo re soil vapor extraction pilot test initial findings (CDM, 2/5/07), & addendum to 2/5/07 technical memo re soil vapor extraction pilot test (CDM, 3/7/07)1110511
3/14/2007Christopher Lichens / Environmental Protection Agency - Region 9Edward Modiano / De Maximis, IncEmail: Comments on tables 7-1 - 7-3 & revised sections 6.2 & 7.0 fr FS for on-site soils, w/history1110561
3/15/2007Christopher Lichens / Environmental Protection Agency - Region 9Edward Modiano / De Maximis, IncLtr: Comments on technical memo, soil vapor extraction test initial findings (CDM, 2/5/07), & addendum to 2/5/07 technical memo, soil vapor extraction pilot test (CDM, 3/7/07)2157341
3/16/2007Christopher Lichens / Environmental Protection Agency - Region 9David Chamberlin / Camp Dresser & McKee, IncEmail: Clarifies comments re technical memo, soil vapor extraction test initial findings (CDM, 2/5/07), & addendum to 2/5/07 technical memo, soil vapor extraction pilot test (CDM, 3/7/07), w/history2157342
3/16/2007Edward Modiano / De Maximis, IncChristopher Lichens / Environmental Protection Agency - Region 9Email: Transmits ltr fr OPOG re requesting extension for submitting revised RI and risk assessment rpts, w/attch1110512
3/19/2007Environmental Protection Agency - Region 9 LaboratoryEnvironmental Protection Agency - Region 9Analytical testing results for OU 1 February 2007 split sampling - project R07S44, SDG 07054A, 3 water samples collected 2/21-2/22/07, analyzed for 1,4-dioxane, w/TL to C Lichens fr B Bettencourt2156431
3/21/2007Environmental Protection Agency - Region 9 LaboratoryEnvironmental Protection Agency - Region 9Analytical testing results for OU 1 February 2007 split sampling - project R07S44, SDG 07054A, 3 water samples collected 2/21-2/22/07, analyzed for VOCs, w/TL to C Lichens fr B Bettencourt 3/22/072156432
4/3/2007Edward Modiano / De Maximis, IncChristopher Lichens / Environmental Protection Agency - Region 9Email: Discusses & transmits ltr fr CDM re response to EPA comments for draft RI rpt & draft human health risk assessment for on-site soils, w/attch1110513
4/4/2007Lori Parnass / CA Environmental Protection Agency - Dept of Toxic Substances ControlChristopher Lichens / Environmental Protection Agency - Region 9Email: No additional comments re revised draft FS for on-site soils, w/history1110562
4/6/2007Edward Modiano / De Maximis, IncChristopher Lichens / Environmental Protection Agency - Region 9Email: Discusses & transmits memo re 2nd addendum to 2/5/07 technical memo, soil vapor extraction pilot test, w/attch2157343
4/9/2007Christopher Lichens / Environmental Protection Agency - Region 9Edward Modiano / De Maximis, IncLtr: Comments on draft RI rpt, & draft human health risk assessment for on-site soils (CDM, 4/3/07)2157344
4/11/2007Edward Modiano / De Maximis, IncChristopher Lichens / Environmental Protection Agency - Region 9Email: Discusses & transmits revised section 5.4 of human health risk assessment for on-site soils, w/attch1110514
4/11/2007Edward Modiano / De Maximis, IncChristopher Lichens / Environmental Protection Agency - Region 9Email: Discusses & transmits updated draft project schedule for on-site soils RI/FS, w/attch2157345
4/12/2007Sharon Wallin / Camp Dresser & McKee, IncTom Perina / C H 2 M Hill, IncEmail: Responds to question in email dated 4/12/07 re how elevations of MIPs were measured, w/history1110515
4/17/2007Edward Modiano / De Maximis, IncChristopher Lichens / Environmental Protection Agency - Region 9Email: Discusses & transmits clean copy of revised draft human health risk assessment (HHRA) for on-site soils, & Apps A & B to HHRA, w/attchs1110516
4/17/2007Christopher Lichens / Environmental Protection Agency - Region 9Edward Modiano / De Maximis, IncLtr: Comments on 2nd addendum to 2/5/07 technical memo, soil vapor extraction pilot test (CDM, 4/6/07)2157346
4/18/2007Christopher Lichens / Environmental Protection Agency - Region 9Edward Modiano / De Maximis, IncEmail: Comments on updated draft project schedule for on-site soils RI/FS, w/history2157347
4/18/2007Edward Modiano / De Maximis, IncChristopher Lichens / Environmental Protection Agency - Region 9Email: Discusses & transmits track changes version of draft human health risk assessment for on-site soils, w/attch & history1110518
4/20/2007Edward Modiano / De Maximis, IncChristopher Lichens / Environmental Protection Agency - Region 9Email: Discusses & transmits redline & clean versions of revised 2nd addendum to 2/5/07 technical memo, soil vapor extraction pilot test, w/o redline version2157348
4/20/2007Christopher Lichens / Environmental Protection Agency - Region 9David Chamberlin / Camp Dresser & McKee, IncEmail: Responds to question re proposed soil vapor extraction pilot test1110519
4/24/2007Edward Modiano / De Maximis, IncChristopher Lichens / Environmental Protection Agency - Region 9Email: Transmits app A litho logs fr revised on-site soils RI rpt, w/attch1110524
4/24/2007Edward Modiano / De Maximis, IncChristopher Lichens / Environmental Protection Agency - Region 9Email: Transmits blueline-strikeout version & clean copy of performance standards verification plan (PSVP) for phase 1a area groundwater treatment system, w/attchs1110520
4/24/2007Edward Modiano / De Maximis, IncChristopher Lichens / Environmental Protection Agency - Region 9Email: Transmits blueline-strikeout version of rpt text & sections 1-3 figures fr revised on-site soils RI rpt, w/attchs1110521
4/24/2007Edward Modiano / De Maximis, IncChristopher Lichens / Environmental Protection Agency - Region 9Email: Transmits section 4 figures fr revised on-site soils RI rpt, w/attch1110522
4/24/2007Edward Modiano / De Maximis, IncChristopher Lichens / Environmental Protection Agency - Region 9Email: Transmits section 5 figures & app A tables fr revised on-site soils RI rpt, w/attchs1110523
4/24/2007Christopher Lichens / Environmental Protection Agency - Region 9Edward Modiano / De Maximis, IncLtr: Approves revised 2nd addendum to 2/5/07 technical memo, soil vapor extraction pilot test (CDM, 4/20/07)2157349
5/15/2007Kimiko Klein / CA Environmental Protection Agency - Dept of Toxic Substances ControlLori Parnass / CA Environmental Protection Agency - Dept of Toxic Substances ControlMemo: Comments on draft human health risk assessment for on-site soils (CDM, 4/17/07)2157350
5/19/2007Christopher Lichens / Environmental Protection Agency - Region 9David Chamberlin / Camp Dresser & McKee, IncEmail: Comments on revised text for pre-final FS for on-site soils, w/history1110577
5/19/2007Christopher Lichens / Environmental Protection Agency - Region 9David Chamberlin / Camp Dresser & McKee, IncEmail: Concurs with revised 5/19 version of text for pre-final FS for on-site soils, w/history1110579
5/19/2007David Chamberlin / Camp Dresser & McKee, IncChristopher Lichens / Environmental Protection Agency - Region 9Email: Gives revised 5/19 version of text for pre-final FS for on-site soils, w/history1110578
5/25/2007Christopher Lichens / Environmental Protection Agency - Region 9David Chamberlin / Camp Dresser & McKee, IncEmail: Responds to question re editing of text in on-site soils RI rpt, w/history1110525
5/25/2007Christopher Lichens / Environmental Protection Agency - Region 9Edward Modiano / De Maximis, IncLtr: Comments on revised on-site soils RI rpt (CDM, 4/24/07)2157351
6/8/2007Christopher Lichens / Environmental Protection Agency - Region 9Edward Modiano / De Maximis, IncLtr: Comments on human health risk assessment for on-site soils (CDM, 4/17/07)2157352
6/20/2007Edward Modiano / De Maximis, IncChristopher Lichens / Environmental Protection Agency - Region 9Email: Discusses & transmits blueline-strikeout version of rpt text, figures, 4-9, 5-1, 5-2, 5-7, & 5-8, & appendix A tables fr pre-final on-site soils RI rpt, w/attchs1110526
6/22/2007Sharon Wallin / Camp Dresser & McKee, IncChristopher Lichens / Environmental Protection Agency - Region 9Email: Discusses & transmits 6/22/07 ltr fr CDM re EPA 6/8/07 comments on human health risk assessment for on-site soils (CDM, 4/17/07), w/attch1110527
7/6/2007Christopher Lichens / Environmental Protection Agency - Region 9Edward Modiano / De Maximis, IncEmail: Responds to email re list of items OPOG will be providing to EPA by COB on 7/13/07, w/history1110529
7/13/2007Sharon Wallin / Camp Dresser & McKee, IncChristopher Lichens / Environmental Protection Agency - Region 9Email: Discusses & transmits technical memo re ambient & indoor air analysis for human health risk assessment for on-site soils, attch A-1, attch A-2, & attch A-3, w/attchs1110530
7/16/2007Sharon Wallin / Camp Dresser & McKee, IncChristopher Lichens / Environmental Protection Agency - Region 9Email: Discusses & transmits attch A-2 to technical memo re ambient & indoor air analysis for human health risk assessment for on-site soils, w/attch1110531
7/18/2007Environmental Protection Agency - Region 9 LaboratoryEnvironmental Protection Agency - Region 9Analytical testing results for OU 1 June 2007 soil gas sampling - project R07S73, SDG 07172A, 3 air samples collected 6/18-6/19/07, analyzed for VOCs, soil gas, w/TL to C Lichens fr B Bettencourt2156433
7/20/2007Edward Modiano / De Maximis, IncChristopher Lichens / Environmental Protection Agency - Region 9Ltr: Discusses potential continued operation of soil vapor extraction pilot testing activities2157353
8/6/2007Sharon Wallin / Camp Dresser & McKee, IncChristopher Lichens / Environmental Protection Agency - Region 9Email: Discusses & transmits appendices (w/o app A-7) for revised draft human health risk assessment for on-site soils, w/attch1110533
8/6/2007Sharon Wallin / Camp Dresser & McKee, IncChristopher Lichens / Environmental Protection Agency - Region 9Email: Discusses & transmits revised draft human health risk assessment for on-site soils, w/attch1110532
8/7/2007Sharon Wallin / Camp Dresser & McKee, IncChristopher Lichens / Environmental Protection Agency - Region 9Email: Discusses & transmits appendices (w/app A-7) for revised draft human health risk assessment for on-site soils, w/attch1110534
8/28/2007Kimiko Klein / CA Environmental Protection Agency - Dept of Toxic Substances ControlLori Parnass / CA Environmental Protection Agency - Dept of Toxic Substances ControlMemo: Comments on revised draft human health risk assessment for on-site soils (CDM, 8/6/07)2157354
8/31/2007Sharon Wallin / Camp Dresser & McKee, IncChristopher Lichens / Environmental Protection Agency - Region 9Email: Discusses & transmits technical memo re expanded soil vapor extraction pilot test findings, w/attch1110535
8/31/2007Christopher Lichens / Environmental Protection Agency - Region 9Edward Modiano / De Maximis, IncLtr: Comments on revised draft human health risk assessment for on-site soils (CDM, 8/6/07)2157355
9/17/2007Environmental Protection Agency - Region 9 LaboratoryEnvironmental Protection Agency - Region 9Analytical testing results for OU 1 August 2007 split sampling - project R07S86, SDG 07235C, 3 water samples collected 8/21-8/22/07, analyzed for VOCs, w/TL to C Lichens fr B Bettencourt2156434
9/25/2007Christopher Lichens / Environmental Protection Agency - Region 9Edward Modiano / De Maximis, IncLtr: Comments on rpt of findings for assessment of 2 buildings near site (KERNTEC Environmental, 8/30/07), & technical memo of recommendations on location of additional indoor air samples at Terra Pave (Locus Technologies, 9/7/07)2157356
9/27/2007Environmental Protection Agency - Region 9 LaboratoryEnvironmental Protection Agency - Region 9Analytical testing results for OU 1 August 2007 split sampling - project R07S86, SDG 07235C, 3 water samples collected 8/21-8/22/07, analyzed for 1,4-dioxane, w/TL to C Lichens fr B Bettencourt2155137
10/1/2007Edward Modiano / De Maximis, IncChristopher Lichens / Environmental Protection Agency - Region 9Email: Discusses & transmits ltr fr CDM re response to EPA comments dated 8/31/07 on human health risk assessment for on-site soils (CDM, 8/6/07), w/attch & history1110537
10/1/2007Edward Modiano / De Maximis, IncChristopher Lichens / Environmental Protection Agency - Region 9Email: Discusses & transmits revised draft human health risk assessment for on-site soils, w/attch & history1110536
10/11/2007Christopher Lichens / Environmental Protection Agency - Region 9Edward Modiano / De Maximis, IncLtr: Approves of revised draft human health risk assessment for on-site soils (CDM, 10/1/07)2157357
10/15/2007Christopher Lichens / Environmental Protection Agency - Region 9Edward Modiano / De Maximis, IncLtr: Comments on technical memo, expanded soil vapor extraction pilot test findings (CDM, 8/31/07)2157358
10/17/2007Christopher Lichens / Environmental Protection Agency - Region 9Lori Parnass / CA Environmental Protection Agency - Dept of Toxic Substances ControlLtr: Request for proposed state ARARs for OU 1 vadose zone FS2157359
10/18/2007Christopher Lichens / Environmental Protection Agency - Region 9Edward Modiano / De Maximis, IncLtr: Approves pre-final on-site soils RI rpt (CDM, 6/20/07)2157360
10/26/2007David Chamberlin / Camp Dresser & McKee, IncChristopher Lichens / Environmental Protection Agency - Region 9
Edward Modiano / De Maximis, Inc
Email: Discusses comments 3 & 4 in 10/11/07 conditional approval ltr for human health risk assessment for on-site soils, w/history1110540
10/26/2007Christopher Lichens / Environmental Protection Agency - Region 9Edward Modiano / De Maximis, IncEmail: Discusses teleconference call for 10/29/07, & comment 3 in 10/11/07 conditional approval ltr for human health risk assessment for on-site soils, w/history1110538
10/29/2007Christopher Lichens / Environmental Protection Agency - Region 9Edward Modiano / De Maximis, IncLtr: Accepts Section ES-6 of 10/1/07 on-site soils human health risk assessment (HHRA) as conclusion section in final HHRA2157361
11/5/2007Edward Modiano / De Maximis, IncChristopher Lichens / Environmental Protection Agency - Region 9Email: Discusses & transmits draft on-site soils remedial action objectives (RAOs) & alternatives for FS for on-site soils, w/attch1110541
11/7/2007Christopher Lichens / Environmental Protection Agency - Region 9Edward Modiano / De Maximis, IncLtr: Comments on draft on-site soils RAOs & alternatives (CDM, 11/5/07)2157362
11/9/2007Camp Dresser & McKee, IncOmega Chemical Site P R P Organized Group
Environmental Protection Agency - Region 9
Final human health risk assessment for on-site soils, w/apps A-E2155135
11/14/2007Camp Dresser & McKee, IncOmega Chemical Site P R P Organized Group
Environmental Protection Agency - Region 9
Compact Disc: Final on-site soils RI rpt (Apps A - B)2130552
11/14/2007Camp Dresser & McKee, IncEnvironmental Protection Agency - Region 9
Omega Chemical Site P R P Organized Group
Final on-site soils RI rpt, w/o compact disc - apps A-B2155134
11/30/2007Edward Modiano / De Maximis, IncChristopher Lichens / Environmental Protection Agency - Region 9Email: Discusses & transmits draft table 2-1 for FS for on-site soils, w/attch1110542
12/4/2007Edward Modiano / De Maximis, IncChristopher Lichens / Environmental Protection Agency - Region 9Email: Discusses & transmits draft alternatives & revised remedial action objective (RAO) 3 for FS for on-site soils, w/attchs1110543
12/21/2007Edward Modiano / De Maximis, IncChristopher Lichens / Environmental Protection Agency - Region 9Email: Discusses & transmits draft FS for on-site soils, w/attch & history1110544
1/4/2008Karen Taylor / Camp Dresser & McKee, IncEdward Modiano / De Maximis, Inc
Christopher Lichens / Environmental Protection Agency - Region 9
Tom Perina / C H 2 M Hill, Inc
Email: Discusses & transmits cost summary pages for alternatives 1-4, & quote fr Thermal Remediation Services, Inc re alternative 4, w/attchs1110580
1/15/2008Sharon Wallin / Camp Dresser & McKee, IncChristopher Lichens / Environmental Protection Agency - Region 9Email: Discusses & transmits replacement pages for on-site soils RI rpt, w/attch1110581
1/16/2008Sharon Wallin / Camp Dresser & McKee, IncChristopher Lichens / Environmental Protection Agency - Region 9Memo: Transmits replacement pages for final on-site soils RI rpt, w/attchs2157368
1/24/2008Lori Parnass / CA Environmental Protection Agency - Dept of Toxic Substances ControlChristopher Lichens / Environmental Protection Agency - Region 9Email: Comments on draft FS for on-site soils, w/history1110582
2/12/2008Christopher Lichens / Environmental Protection Agency - Region 9Edward Modiano / De Maximis, IncLtr: Comments on draft FS for on-site soils (CDM, 12/21/07)2157363
3/1/2008Edward Modiano / De Maximis, IncChristopher Lichens / Environmental Protection Agency - Region 9Email: Discusses & transmits draft comments on draft FS for on-site soils, w/history1110583
3/3/2008Christopher Lichens / Environmental Protection Agency - Region 9Edward Modiano / De Maximis, IncEmail: Initial responses to draft comments on draft FS for on-site soils, w/history, w/history1110584
3/4/2008Christopher Lichens / Environmental Protection Agency - Region 9Lori Parnass / CA Environmental Protection Agency - Dept of Toxic Substances ControlEmail: Responds to comments on draft FS for on-site soils, w/history, w/history1110585
3/6/2008Christopher Lichens / Environmental Protection Agency - Region 9David Chamberlin / Camp Dresser & McKee, Inc
Edward Modiano / De Maximis, Inc
John Eisenbeis / Camp Dresser & McKee, Inc
Email: Gives soil vapor extraction enhancement language for FS for on-site soils1110553
3/6/2008Edward Modiano / De Maximis, IncChristopher Lichens / Environmental Protection Agency - Region 9Email: Revises soil vapor extraction enhancement language for FS for on-site soils, w/history1110555
3/6/2008Barbara Bates / Environmental Protection Agency - Region 9Christopher Lichens / Environmental Protection Agency - Region 9Email: Transmits analytical testing results - project R08S30, SDG 08052A, 3 water samples, collected 2/20/08, analyzed for 1,4-dioxane, w/attch1110554
3/7/2008David Chamberlin / Camp Dresser & McKee, IncChristopher Lichens / Environmental Protection Agency - Region 9Email: Discusses & transmits draft updated text for section 6.2 of FS for on-site soils, w/attch1110556
3/7/2008Christopher Lichens / Environmental Protection Agency - Region 9David Chamberlin / Camp Dresser & McKee, IncEmail: Discusses & transmits redline version of draft updated text for section 6.2 of FS for on-site soils, w/attch & history1110557
3/7/2008Christopher Lichens / Environmental Protection Agency - Region 9Lori Parnass / CA Environmental Protection Agency - Dept of Toxic Substances ControlEmail: Preliminary response to comments re draft updated text for section 6.2 of FS for on-site soils, w/history1110558
3/25/2008Environmental Protection Agency - Region 9 LaboratoryEnvironmental Protection Agency - Region 9Analytical testing results for OU 1 February 2008 split sampling - project R08S30, SDG 08052A, 3 water samples collected 2/20/08, analyzed for VOCs, w/TL to C Lichens fr B Bettencourt 3/31/082157313
4/23/2008Christopher Lichens / Environmental Protection Agency - Region 9Edward Modiano / De Maximis, IncEmail: Discusses & transmits ltr re approval of revised draft FS for on-site soils (CDM, 3/20/08), w/attch1110564
4/23/2008David Chamberlin / Camp Dresser & McKee, IncChristopher Lichens / Environmental Protection Agency - Region 9Email: Request for clarification re general comment #4 in approval ltr for revised draft FS for on-site soils, w/history1110565
4/23/2008Christopher Lichens / Environmental Protection Agency - Region 9David Chamberlin / Camp Dresser & McKee, IncEmail: Responds to request for clarification re general comment #4 in approval ltr for revised draft FS for on-site soils, w/history1110566
4/23/2008Christopher Lichens / Environmental Protection Agency - Region 9Edward Modiano / De Maximis, IncLtr: Comments on & approves of draft FS for on-site soils (CDM, 3/20/08)2157364
4/25/2008Tom Perina / C H 2 M Hill, IncDavid Chamberlin / Camp Dresser & McKee, Inc
Christopher Lichens / Environmental Protection Agency - Region 9
Email: Responds to request for clarification re general comment #2 (VFLUX) in approval ltr for revised draft FS for on-site soils, w/history1110567
4/28/2008Edward Modiano / De Maximis, IncChristopher Lichens / Environmental Protection Agency - Region 9Email: Discusses & transmits draft document re streamlined RAO language in response to general comment #4 in approval ltr for revised draft FS for on-site soils, w/attch1110568
4/29/2008Christopher Lichens / Environmental Protection Agency - Region 9Edward Modiano / De Maximis, IncEmail: Comments on draft document re streamlined RAO language in response to general comment #4 in approval ltr for revised draft FS for on-site soils, w/history1110569
5/1/2008Christopher Lichens / Environmental Protection Agency - Region 9Edward Modiano / De Maximis, IncEmail: Discusses & transmits RAO supporting language for revised draft FS for on-site soils, w/attch1110570
5/7/2008Christopher Lichens / Environmental Protection Agency - Region 9Edward Modiano / De Maximis, IncEmail: Approves of revised RAOs for final FS for on-site soils, w/history1110572
5/7/2008Edward Modiano / De Maximis, IncChristopher Lichens / Environmental Protection Agency - Region 9Email: Discusses & transmits revised RAOs for final FS for on-site soils, w/attch1110571
5/12/2008Edward Modiano / De Maximis, IncChristopher Lichens / Environmental Protection Agency - Region 9Email: Discusses & transmits redline & clean versions of rpt text, plus complete version of pre-final FS for on-site soils, w/attchs1110573
5/16/2008Christopher Lichens / Environmental Protection Agency - Region 9Edward Modiano / De Maximis, IncEmail: Asks for changes to be made to pre-final FS for on-site soils, w/history1110575
5/16/2008David Chamberlin / Camp Dresser & McKee, IncEdward Modiano / De Maximis, Inc
Christopher Lichens / Environmental Protection Agency - Region 9
Email: Gives revised text for pre-final FS for on-site soils, w/history1110576
5/21/2008Camp Dresser & McKee, IncEnvironmental Protection Agency - Region 9
Omega Chemical Site P R P Organized Group
Final FS for on-site soils, w/app A2157369
6/1/2008Environmental Protection Agency - Region 9-Fact Sheet: Proposed plan for soil cleanup2157370
6/3/2008Environmental Protection Agency - Region 9-List of US EPA guidance documents consulted during development & selection of response action for site2157371

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