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Pacific Southwest, Region 9: Superfund

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

Stringfellow

Superfund Site

Final Sitewide Remedy

Administrative Record Index

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

The documents contained in the administrative record file have been used to date by the U.S. Environmental Protection Agency in identifying appropriate remedial activities for use at the Stringfellow Superfund site for the final Record of Decision (ROD) in Glen Avon, California. The administrative record file will be added to as documents become available. 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.

The index lists the documents in ascending chronological order with undated documents at the beginning. Each document has been assigned a unique identification number.

The list of U.S. Environmental Protection Agency guidance documents which were considered or relied upon in the selection of the remedy is document AR #459 in this administrative record file. Copies of the guidance documents are contained in the Compendium of CERCLA Response Selection Guidance Documents located in the Region 9 Superfund Records Center.

Please note that paper copies of all reports containing site sampling data that have not been microfilmed are located in the Superfund Records Center in San Francisco. Some of these documents ar also located in the Glen Avon Public Library.
Updated: December 5, 1997

List of Abbreviations and Acronyms Used in Administrative Record Index

ABBREVIATIONMEANING
&and
#number
AOCAdministrative Order on Consent
appappendix
ATSDRAgency for Toxic Substances and Disease Registry
attchattachment
CACalifornia
CDConsent Decree
DTSCDepartment of Toxic Substances Control
EPAEnvironmental Protection Agency
evalevaluation
exexemption
FOIAFreedom of Information Act
frfrom
FSFeasibility Study
FYFiscal Year
HMCHazardous Materials Control
ltrletter
miscmiscellaneous
mtgmeeting
O&MOperation and Maintenance
ORDOffice of Research & Development
OUOperable Unit
PCGPyrite Canyon Group
PRPPotentially Responsible Party
PTPPretreatment Plant
RARemedial Action
RASRoutine Analytical Services
reregarding
RIRemedial Investigation
RODRecord of Decision
rptreport
SACStringfellow Advisory Committee
SAICScience Applications International Corporation
SAPSampling & Analysis Plan
SOWStatement of Work
STARTSuperfund Technical Assistance Response Team
summsummary
SVESoil vapor Extraction
TACTechnical Advisory Committee
TCETrichloroethylene
TESTechnical Enforcement Support
TLTransmittal Letter
vvolume
w/with
w/owithout

Administrative Record Index

Doc DateAuthor / Author Org.Addressee / Addressee Org.Title / SubjectDoc ID
11/12/1986 -Stringfellow Advisory CommitteeStatus of treatment technologies being considered for RA, treatability studies 1, w/attch A-F88176630
12/22/1987Riverside County - Planning Dept -Jurupa community plan (JCP) land use policies (Riverside county comprehensive general plan), w/handwritten post-it note88177221
9/1/1988Environmental Protection Agency - Office of Emergency & Remedial Response -Superfund record of decision (ROD) - Selma Treating, CA (land use)88177222
10/1/1988Stringfellow Steering CommitteeCA Dept of Health Services - Toxic Substances Control DivReview & comments on DHS/EPA proposed plan for contaminated gw cleanup south of Hwy 60 in Glen Avon, CA 6/30/8888176386
12/1/1988Thomas Dahl / Environmental Protection Agency - National Enforcement Investigations CenterKaren Ueno / Environmental Protection Agency - Region 9Memo: Transmits paper describing Harbauer process use, experience gained with soil-decontamination system in Berlin, treatability studies 1, w/attch88176629
1/1/1989CA Dept of Health Services - Toxic Substances Control Div -Newsletters: Stringfellow update (9/84 - 12/89)88177324
4/1/1989Environmental Protection Agency -Demonstration bulletin, in-situ stabilization, treatability studies 1, w/drawing88180184
4/1/1989Environmental Protection Agency -Demonstration bulletin, solidification/stabilization process, treatability studies 1, w/drawing88180185
4/1/1989Environmental Protection Agency -Demonstration bulletin, solidification/stabilization process, treatability studies 1, w/drawing88180186
7/1/1989Kleinfelder, IncCA Environmental Protection Agency - Dept of Toxic Substances ControlFinal summary data rpt, groundwater monitoring project, lower Pyrite Canyon wells (proj #50-1477-01), w/maps88176448
8/22/1989Concerned Neighbors in ActionStringfellow Advisory CommitteeDiscussion paper on preferred alternative for remediation at Stringfellow (treatability studies 1), w/TL to SAC fr L Bradley 8/17/8988176626
9/14/1989 - -Mtg Minutes: Summary of Stringfellow meeting, PRP technical committee, w/TL to E Ekholm & B Jines fr J Dunn 10/16/8988176512
10/5/1989Environmental Protection Agency -Demonstration bulletin, solidification/stabilization process, treatability studies 1, w/drawing88180183
11/1/1989Kleinfelder, IncCA Environmental Protection Agency - Dept of Toxic Substances ControlFinal summary data rpt, groundwater monitoring project, v188176059
11/1/1989Kleinfelder, IncCA Environmental Protection Agency - Dept of Toxic Substances ControlFinal summary data rpt, groundwater monitoring project, v288176060
11/1/1989Environmental Protection Agency -Innovative technology, best solvent, extraction process, treatability studies 1, w/drawing88180188
11/1/1989Environmental Protection Agency -Innovative technology, slurry-phase biodegradation, treatability studies 1, w/drawing88180189
11/1/1989Environmental Protection Agency -Innovative technology, in-situ vitrification, treatability studies 1, w/drawing88180190
12/18/1989David Lewis / Environmental Protection Agency - Region 9Karen Ueno / Environmental Protection Agency - Region 9Memo: Draft review & comments on baseline risk assessment, w/attchs88176192
1/8/1990Mark Leary / Environmental Protection Agency - Region 9
David Jones / Environmental Protection Agency - Region 9
Stringfellow Advisory CommitteeLtr: Transmits treatability studies 1, pathways & contaminants of concern, w/attchs 1-7 (ltr, ROD timing, RI/FS risk & contamination summ, eval, etc)88176621
1/11/1990 - -Mtg agenda: Data needs meeting, PRP technichal committee, w/TL of 2/20/90 transmitting minutes of 1/11/9088176516
2/1/1990Kleinfelder, IncCA Environmental Protection Agency - Dept of Toxic Substances ControlFinal summary data rpt, groundwater monitoring project88176063
2/1/1990CA Dept of Health Services - Toxic Substances Control Div -Stringfellow update 1/90-2/90, potentially responsible parties join Stringfellow advisory committee88179745
3/19/1990Penny Newman / Glen Avon Residents Technical Assistance CommitteeKaren Ueno / Environmental Protection Agency - Region 9Ltr: Response to 3/15/90 ltr re comments on treatability studies, pathway & contaminants of concern, w/ltr to P Newman fr J Highland88180168
3/21/1990Karen Ueno / Environmental Protection Agency - Region 9Stringfellow Advisory CommitteeLtr: Evaluating potential effect significant storm/seismic events impact, w/proposed events & ltr re Pyrite Creek Channel88176548
4/1/1990CA Dept of Health Services - Toxic Substances Control Div -Stringfellow update 3/90-4/90, Earthquake report: no damage at site88176424
4/18/1990Karen Ueno / Environmental Protection Agency - Region 9Stringfellow Advisory CommitteeLtr: Transmits significant storm/seismic events impact evaluation, w/attch88176547
5/9/1990 - -Mtg minutes: Summary of Stringfellow technical workshop, PRP technical committee88180021
5/9/1990 - -Mtg agenda: Workshop meeting, PRP technical committee, w/items to discuss, list of attendees & ltr of 3/28/90 re data requirements for vacuum gas88180022
5/22/1990J Stumbar / Foster Wheeler Enviresponse, IncEnvironmental Protection Agency - Region 9Soil vapor extraction (SVE) technology assessment rpt, w/TL to addressees fr K Ueno 7/12/9088176562
6/5/1990Stringfellow Technical Committee -Community well test program, phase 1, final workplan88176444
10/31/1990 - -Mtg minutes: Summary of Stringfellow technical workshop, PRP technical committee88180017
11/1/1990David Jones / Environmental Protection Agency - Region 9Penny Newman / Glen Avon Residents Technical Assistance Committee
Joe Highland / Glen Avon Residents Technical Assistance Committee
Memo: Purpose of treatability studies, w/diagrams & attchs 1 & 288176614
11/1/1990CA Environmental Protection Agency - Dept of Toxic Substances Control -Project status rpt, w/TL to Stringfellow Advisory Committee (SAC) fr M Leary 11/1/90 & schedule88176725
11/1/1990Stringfellow Advisory Committee -Mtg agenda: ROD discussion Stringfellow Advisory Committee (SAC) mtg, FY 91 & 92, w/ROD process & estimated costs (Redacted - FOIA ex 5)88180364
12/1/1990Penny Newman / Concerned Neighbors in Action -Flyer re animals death near site (community concerns, dead puppies, FY 91) (public), w/handwritten note88178960
1/1/1991Environmental Protection Agency - Region 9 -Stringfellow update88179785
1/1/1991CA Environmental Protection Agency - Dept of Toxic Substances Control -Public notice: Stringfellow update, public meeting (community relations, FY 91)88180228
1/4/1991Karen Ueno / Environmental Protection Agency - Region 9Cherise Goddard, Resident / NONELtr: Private citizen concerns re drinking water (handwritten), w/ltr of response 1/8/91 (community relations)88180225
1/16/1991CA Environmental Protection Agency - Dept of Toxic Substances Control -Project status rpt, w/TL to Stringfellow Advisory Committee (SAC) fr M Leary 1/16/91 & schedule88176714
1/17/1991Penny Newman / Concerned Neighbors in ActionDavid Jones / Environmental Protection Agency - Region 9Ltr: Clarification of statements fr SAC meeting (community relations, FY 91)88180224
1/24/1991Penny Newman / Concerned Neighbors in Action -Newsclip: Stringfellow coverup w/attch & TL to Ueno fr McLaughlin88180572
1/24/1991David Jones / Environmental Protection Agency - Region 9Concerned citizen / NONELtr: Response to private citizen questions re cleanup efforts & decision making process, (public, community relations, FY 91) (Redacted - FOIA ex 6)88179062
1/28/1991Donald Clay / Environmental Protection Agency - Region 9George Brown / US CongressLtr: Response to events re site contamination (public, community relations, FY 91)88180213
1/31/1991Environmental Protection Agency - Region 9 -Treatability process at site, summary of activities, w/o encl88180192
2/5/1991Penny Newman / Concerned Neighbors in ActionStringfellow Advisory CommitteeLtr: Response to 1/30/91 ltr re withdrawn fr Stringfellow Advisory Committee (SAC), w/ltr & correspondance, articles, etc re public relations88176685
2/6/1991 - -Mtg minutes: Summary of Stringfellow technical workshop, PRP technical committee88176507
2/20/1991Penny Newman / Concerned Neighbors in Action -Newsclip: It's in the mail (fr Record, 2/14/91), community relations, FY 9188180223
3/1/1991Environmental Protection Agency - Office of Solid Waste & Emergency Response -Article: Dense nonaqueous phase liquids88177154
3/7/1991Karen Ueno / Environmental Protection Agency - Region 9Melba Dunlap / Orange County - Board of SupervisorsLtr: Questions re storm, community relations, FY 9188180220
3/12/1991Penny Newman / Concerned Neighbors in Action -Newsclip: Stringfellow update (Riverside County Record), w/TL to K Ueno fr C McLauaghlin 3/12/9188180593
3/13/1991David Jones / Environmental Protection Agency - Region 9Penny Newman / Concerned Neighbors in ActionLtr: Questions re participation in Stringfellow Advisory Committee (public, community relations, FY 91)88180218
3/13/1991 - -Ltr: Response to 1/17/91 ltr re site issues, Stringfellow Advisory Committee (SAC), FY 91 & 9288180359
3/14/1991Karen Ueno / Environmental Protection Agency - Region 9Stringfellow Advisory CommitteeLtr: Concerns re site contamination (public, community relations, FY 91), w/lab rpt fr Truesdail88180217
3/14/1991Karen Ueno / Environmental Protection Agency - Region 9Stringfellow Advisory CommitteeLtr: French drain, Stringfellow Advisory Committee (SAC), FY 91 & 92, w/Truesdail lab rpt88180358
3/19/1991 - -Handout at Stringfellow Advisory Committee (SAC) meeting (emergency notification), w/non emergency response & diagram88180357
3/20/1991Stringfellow Advisory Committee -Mtg minutes: Stringfellow Advisory Committee (SAC) mtg re community issues (Redacted - FOIA ex 5)88179069
3/22/1991CA Environmental Protection Agency - Dept of Toxic Substances Control -Workplan proposal - treatability studies for on-site contaminated soils (Redacted - FOIA ex 5)88179066
3/27/1991David Jones / Environmental Protection Agency - Region 9Lincoln Littrell, Resident / NONELtr: Response to private citizen question re cleanup efforts & decision-making process (public, community relations, FY 91) (Redacted - FOIA ex 6)88180243
4/2/1991Dante Rodriguez / Environmental Protection Agency - Region 9Stringfellow Advisory CommitteeLtr: Request to review draft response plan & to submit comments (public, community relations/SAC, FY 91)88180214
4/2/1991John Blevins / Environmental Protection Agency - Region 9Mark Leary / CA Dept of Health Services - Toxic Substances Control DivLtr: Misunderstanding & clarification re O&M analysis in 3/22/91 workplan proposal (Redacted - FOIA ex 5)88179065
4/16/1991Arlene Sontag / Stringfellow Advisory CommitteeDante Rodriguez / Environmental Protection Agency - Region 9Memo: Emergency notification stuff, Stringfellow Advisory Committee (SAC) FY 91 & 92, w/TL to Rodriguez fr Sontag 4/16/91, notifications, ideas & TLs88176709
4/17/1991CA Environmental Protection Agency - Dept of Toxic Substances Control -Project status rpt, w/TL to Stringfellow Advisory Committee (SAC) fr M Leary 4/17/9188176719
4/17/1991Stringfellow Advisory Committee -Mtg agenda: Stringfellow Advisory Committee (SAC), FY 91 & 92, w/mtg minutes of 3/20/9188180352
4/17/1991 - -Mtg minutes: Stringfellow Advisory Committee (SAC), FY 91 & 9288180354
5/1/1991Kleinfelder, IncCA Environmental Protection Agency - Dept of Toxic Substances ControlFinal summary data rpt for groundwater monitoring project, v388176117
5/1/1991Kleinfelder, IncCA Environmental Protection Agency - Dept of Toxic Substances ControlFinal summary data rpt for groundwater monitoring project, v188176115
5/1/1991Kleinfelder, IncCA Environmental Protection Agency - Dept of Toxic Substances ControlFinal summary data rpt for groundwater monitoring project, v288176116
5/1/1991Kleinfelder, IncCA Environmental Protection Agency - Dept of Toxic Substances ControlFinal summary data rpt for groundwater monitoring project, v488176118
5/1/1991C Travis / Oak Ridge National Laboratory
C Doty / Oak Ridge National Laboratory
-Effectiveness of groundwater pumping as restoration technology88176208
5/1/1991Concerned Neighbors in Action -Stringfellow news publication, meeting invitation, (public, community relations)88176684
5/3/1991Foster Wheeler Enviresponse, IncPatti Cleary / Environmental Protection Agency - Region 9Final technology analysis rpt, START program, treatability studies, w/TL to T Rauh fr P Cleary 5/31/9188176617
5/7/1991Lisa Mckenzie / Environmental Protection Agency - National Enforcement Investigations CenterThomas Dahl / Environmental Protection Agency - National Enforcement Investigations CenterMemo: Analysis of groundwater monitoring samples rpt, w/tables 1-9 & TL to addressees fr K Ueno 5/20/9188176498
5/30/1991CA Environmental Protection Agency - Dept of Toxic Substances Control -Project status rpt, w/TL to Stringfellow Advisory Committee (SAC) fr M Leary 5/30/9188180334
5/31/1991Patti Cleary / Environmental Protection Agency - Region 9Linda Burk / CA Senate - Office of Senator PresleyLtr: Final rpt on soil treatability studies, w/o encl88180345
5/31/1991Patti Cleary / Environmental Protection Agency - Region 9Melba Dunlap / Orange County - Board of SupervisorsLtr: Final rpt on soil treatability studies, w/o encl88180338
5/31/1991Patti Cleary / Environmental Protection Agency - Region 9Penny Newman / Concerned Neighbors in ActionLtr: Final rpt on soil treatability studies, w/o encl88180339
5/31/1991Patti Cleary / Environmental Protection Agency - Region 9Leannah Bradley / US House of Representatives - Office of George Brown, JrLtr: Final rpt on soil treatability studies, w/o encl88180340
5/31/1991Patti Cleary / Environmental Protection Agency - Region 9Denese Wecker / League of Women VotersLtr: Final rpt on soil treatability studies, w/o encl88180348
6/1/1991Bechtel Environmental, IncPyrite Canyon Group, IncCommunity well test program, phase 1, final rpt of short-term tests, 8/90-1/91, v1, w/TL to K Ueno fr W Britt 3/29/91, w/response to comments88176102
6/1/1991Bechtel Environmental, IncPyrite Canyon Group, IncCommunity well test program, phase 1, final rpt of short-term tests, 8/90-1/91, v288176103
6/1/1991Bechtel Environmental, IncPyrite Canyon Group, IncCommunity well test program, phase 1, final rpt of short-term tests, 8/90-1/91, v388176104
6/1/1991C H 2 M Hill, IncEnvironmental Protection Agency - Region 9Groundwater level hydrographs & well construction summaries (groundwater monitoring), w/maps, graphics & ltrs88177039
6/1/1991Environmental Protection Agency - Office of Emergency & Remedial Response -Superfund record of decision (ROD) - FMC (Fresno plant), CA (land use)88177223
6/13/1991 - -Draft incident occurrence notification & information dissemination plan, Stringfellow Advisory Committee (SAC), w/TL to A Bain fr M Dunlap 6/13/9188180331
6/14/1991 - -Summary of technology analysis rpt, treatability studies88180194
6/19/1991Stringfellow Advisory Committee -Mtg minutes: Stringfellow Advisory Committee (SAC), FY 91 & 9288180327
6/19/1991CA Environmental Protection Agency - Dept of Toxic Substances Control -Project status rpt, w/TL to Stringfellow Advisory Committee (SAC) fr M Leary 6/19/9188180329
6/24/1991John Blevins / Environmental Protection Agency - Region 9Mark Leary / CA Dept of Health ServicesLtr: Concerns re CA DHS's proposal for treatability studies of soils (Redacted - FOIA ex 5)88179064
7/31/1991Stringfellow Advisory Committee -Mtg agenda: Stringfellow Advisory Committee (SAC), FY 91 & 92, w/mtg minutes of 6/19/91, TL to Rodriguez fr W Drapper 7/2/91 & post-it notes88176713
7/31/1991Stringfellow Advisory Committee -Mtg agenda: Stringfellow Advisory Committee (SAC) re well test construction schedule, community relations & negotiations (Redacted - FOIA ex 5)88179068
7/31/1991CA Environmental Protection Agency - Dept of Toxic Substances Control -Project status rpt, w/TL to Stringfellow Advisory Committee (SAC) fr M Leary 7/31/9188180315
7/31/1991CA Environmental Protection Agency - Dept of Toxic Substances Control -Project status rpt, w/TL to Stringfellow Advisory Committee (SAC) fr M Leary 7/31/9188180319
7/31/1991Stringfellow Advisory Committee -Mtg agenda: Stringfellow Advisory Committee (SAC), FY 91 & 92 (Redacted - FOIA ex 5)88180320
8/1/1991Kleinfelder, IncCA Environmental Protection Agency - Dept of Toxic Substances ControlFinal summary data rpt, groundwater monitoring project88176064
8/15/1991Science Applications International CorpPatti Cleary / Environmental Protection Agency - Region 9Draft 1 update of chemical specific ARARs, TES 1188176969
8/15/1991Science Applications International CorpPatti Cleary / Environmental Protection Agency - Region 9Update of chemical-specific ARARs for site, draft 1 (FS/ROD), w/TL to P Cleary fr C Schmidt88177243
8/18/1991 - -Potential criteria for evaluation of effectiveness of soil vapor extraction (SVE), citations, (final ROD, SAIC work)88176678
8/28/1991CA Environmental Protection Agency - Dept of Toxic Substances Control -Project status rpt, w/TL to Stringfellow Advisory Committee (SAC) fr M Leary 8/28/9188180311
8/28/1991Stringfellow Advisory Committee -Mtg agenda: Stringfellow Advisory Committee (SAC), FY 91 & 92, w/mtg minutes of 7/31/9188180312
9/30/1991 - -Analysis of background sulfate in community near Stringfellow plume (sulfates/nitrates), w/TLs to K Ueno fr T Fogg & to B Bledsoe fr D Rodriguez88176802
10/1/1991Kleinfelder, IncCA Environmental Protection Agency - Dept of Toxic Substances ControlFinal summary data rpt, groundwater monitoring project, v188176061
10/1/1991Kleinfelder, IncCA Environmental Protection Agency - Dept of Toxic Substances ControlFinal summary data rpt, groundwater monitoring project, v288176062
10/1/1991David McWhorter / Colorado State Univ
Bernard Kueper / Colorado State Univ
-Article: Behavior of dense, nonaqueous phase, liquids (DNAPLs) in fractured clay & rock (Groundwater, v29, #5, 716-728)88176209
10/30/1991Stringfellow Advisory Committee -Mtg agenda: Stringfellow Advisory Committee (SAC), FY 91 & 92, w/mtg minutes of 8/28/91 (Redacted - FOIA ex 5)88180309
10/30/1991CA Environmental Protection Agency - Dept of Toxic Substances Control -Project status rpt, w/TL to Stringfellow Advisory Committee (SAC) fr M Leary 10/30/9188180306
11/4/1991Thomas Fogg / Science Applications International CorpKaren Ueno / Environmental Protection Agency - Region 9Ltr: Transmits revised discussion of background levels of nitrate in community near Stringfellow plume (sulfates/nitrates), w/attchs88176803
11/14/1991William Draper / CA Environmental Protection Agency - Dept of Toxic Substances ControlDante Rodriguez / Environmental Protection Agency - Region 9Ltr: Schedule for meetings in 3 schools (public/community FY 92 & 93)88180097
11/15/1991Science Applications International CorpDante Rodriguez / Environmental Protection Agency - Region 9Approach to enhancing responses to health risk related comments on RI & FS (Redacted - FOIA ex 5)88177238
11/19/1991Beth Jines / CA Environmental Protection Agency - Dept of Toxic Substances Control -Press Release: Precautionary measures taken at Stringfellow dump site (public/community FY 92 & 93)88180092
11/20/1991Joyce Clarke / Science Applications International CorpDante Rodriguez / Environmental Protection Agency - Region 9Ltr: Transmits revised analysis of nitrate & sulfate background levels in Glen Avon community wells, w/attchs88176191
11/20/1991Dante Rodriguez / Environmental Protection Agency - Region 9Science Applications International CorpLtr: Transmits Feasibility/practicality of mtg groundwater ARARs beneath site (draft 1) (FS/ROD), w/attch w/marginalia88177244
12/1/1991Riverside County - Planning Dept -Jurupa community plan land use policies, exhibit A (Stringfellow action committee)88178969
12/5/1991William Draper / CA Environmental Protection Agency - Dept of Toxic Substances ControlJohn Wilson / Jurupa Community Services DistrictLtr: Thank you ltr for meeting with staff re environmental presentations for Glen Avon school children (public/community FY 92 & 93)88180090
12/6/1991Science Applications International CorpDante Rodriguez / Environmental Protection Agency - Region 9Enhanced responses to comments on RI & FS rpts (risk), draft #1, w/marginalia88177236
12/11/1991 - -Project workshop (effluent discharge),w/review of water disposal (desalting) options in Glen Avon, marginalia, dwgs, excerpt fr Watermaster rpt & maps88176572
1/1/1992Lorne Everett / NONE
Stephen Cullen / NONE
John Kramer / NONE
-Chapter: Vadose zone monitoring with neutron moisture probe (Handbook of vadose zone characterization & monitoring, pp 291-309) (soil moisture),attchs88177259
1/7/1992Kenneth Poirier / Environmental Protection Agency - Region 5Dante Rodriguez / Environmental Protection Agency - Region 9Memo: Oral & dermal toxicity data & possible use of surrogate chemical for p-chlorobenzene sulfonic acid, w/risk assessment issue paper88179431
1/15/1992Stringfellow Advisory Committee -Mtg agenda: Stringfellow Advisory Committee (SAC), w/mtg minutes of 10/30/91 & w/status rpt, community well test proj (Redacted - FOIA ex 5)88177306
2/1/1992CA Dept of Health Services - Toxic Substances Control Div -Stringfellow update88179784
2/3/1992 -Mark Leary / CA Environmental Protection Agency - Dept of Toxic Substances ControlLtr: Outlines discussion for 2/5/92 mtg re site scenarios (cooperative agreement, treatability study) (Redacted - FOIA ex 5)88179063
2/26/1992CA Environmental Protection Agency - Dept of Toxic Substances Control -Project status rpt, w/TL to Stringfellow Advisory Committee (SAC) fr M Leary 2/26/9288176705
2/26/1992Stringfellow Advisory Committee -Mtg agenda: Stringfellow Advisory Committee (SAC), FY 91 & 92, w/mtg minutes of 1/15/92 (Redacted - FOIA ex 5)88180305
5/6/1992Concerned Neighbors in Action -Press Release: Peace talks in Glen Avon (public/community FY 92 & 93), w/attch & TLs88176540
5/22/1992Concerned Neighbors in Action -Solutions proposed by community relations (public/community FY 92 & 93)88176533
5/22/1992Dante Rodriguez / Environmental Protection Agency - Region 9 -Mtg notes & comments - Sacramento planning mtg (Redacted - FOIA ex 5)88179067
6/1/1992George Paine / NONE -Article: Removal of VOCs fr fractured bedrock groundwater (HMC, 40-46)88179451
6/30/1992Dante Rodriguez / Environmental Protection Agency - Region 9Beth Jines / CA Environmental Protection Agency - Dept of Toxic Substances ControlLtr: Comments on DTSC workplan proposal for treatability studies, w/attch w/handwritten note & marginalia (Redacted - FOIA ex 5)88177302
7/1/1992Environmental Protection Agency - Region 9 -Fact sheet: $150 million settlement reached (public/community FY 92 & 93), w/list of settling defendants, pretreatment plant operations & photo88176541
7/6/1992William Soo Hoo / CA Environmental Protection Agency - Dept of Toxic Substances ControlMelba Dunlap / Orange County - Board of SupervisorsLtr: Follow-up to 6/18 & 6/23/92 phone conversation re site isuues, Stringfellow Advisory Committee (SAC), FY 91 & 9288180304
7/10/1992Tracer Research CorpBechtel Environmental, IncShallow soil gas survey, 6/22 to 7/10/92, w/maps88176665
7/15/1992Jeff Zelikson / Environmental Protection Agency - Region 9
Keith Takata / Environmental Protection Agency - Region 9
-Memorandum of agreement between EPA & DTSC (interim final) (Redacted - FOIA ex 5)88177304
7/27/1992David Coursen / Environmental Protection Agency - Washington, D CHoward Corcoran / Environmental Protection Agency - Washington, D CMemo: Use of institutional controls at Superfund sites (land use), w/handwritten note88177224
8/12/1992Foster Wheeler Enviresponse, IncPatti Cleary / Environmental Protection Agency - Region 9Final technology analysis rpt, soil washing, START program, treatability studies, w/TL to SAC 11/2/9288176632
8/26/1992Stringfellow Advisory Committee -Mtg agenda: Stringfellow Advisory Committee (SAC), FY 91 & 92, w/mtg minutes of 2/26/92 (Redacted - FOIA ex 5)88180300
9/16/1992Bechtel Environmental, IncPyrite Canyon Group, IncTechnical memo: Water balance evaluation (reinjection), w/TL to J A Cola fr D Bergman 9/16/9288176866
9/23/1992Stringfellow Advisory Committee -Mtg agenda: Stringfellow Advisory Committee (SAC), w/mtg minutes of 8/26/92 & schedule (Redacted - FOIA ex 5)88177305
10/8/1992 - -Technical/project workshop meeting agenda, 10/7 & 10/8/92 (CD/AOC enforcement work) (technical committee), w/list of attendees88179824
10/21/1992 - -Mtg agenda: Stringfellow advisory committee (SAC), w/marginalia, 9/23/92 mtg minutes & attchs (Redacted - FOIA ex 5)88177301
11/19/1992Dante Rodriguez / Environmental Protection Agency - Region 9Barbara Barbee / CA Environmental Protection Agency - Dept of Toxic Substances ControlLtr: Request to estimate resources needed for cooperative agreement FS action plan, w/action plan (Redacted - FOIA ex 5)88177303
12/1/1992Bechtel Environmental, IncPyrite Canyon Group, IncWater balance evaluation, rev #1, w/TL to J A Cola fr D Bergman 12/23/9288176823
12/16/1992 - -Mtg agenda: Stringfellow advisory committee (SAC), w/11/24/92 mtg minutes & attchs (Redacted - FOIA ex 5)88177300
12/30/1992William Draper / CA Environmental Protection Agency - Dept of Toxic Substances ControlStringfellow Advisory CommitteeLtr: Transmits draft notification plan, SAC Stringfellow advisory committee, FY 93, w/attchs88180110
1/1/1993Bechtel Environmental, IncPyrite Canyon Group, IncFinal zone 1 dewatering system plan, w/TL to J Cola fr D Bergman 1/27/93 & responses to comments re draft workplan88176659
1/12/1993Dante Rodriguez / Environmental Protection Agency - Region 9 -Proposed mtg agenda: EPA/DTSC mtg on FS completion (FS/ROD) (Redacted - FOIA ex 5)88179570
1/21/1993Dante Rodriguez / Environmental Protection Agency - Region 9Richard Bailey / CA Environmental Protection Agency - Dept of Toxic Substances ControlLtr: Stringfellow FS completion, meeting for 1/24/93 (FS/ROD), w/attch88179584
2/1/1993Dante Rodriguez / Environmental Protection Agency - Region 9Richard Bailey / CA Environmental Protection Agency - Dept of Toxic Substances ControlLtr: EPA/DTSC meeting on FS/ROD, 2/3/93, w/agenda88179583
2/10/1993Dante Rodriguez / Environmental Protection Agency - Region 9File / NONEMemo: 5-year review for OU 2, w/TL to H Fleishman fr D Rodriguez88180032
3/1/1993Bechtel Environmental, IncPyrite Canyon Group, IncCommunity well test program, phase 1 final rpt, v2 (appendices)88176654
3/1/1993Bechtel Environmental, IncPyrite Canyon Group, IncCommunity well test program, phase 1 final rpt, v1, w/TL to J Cola fr D Bergman 3/26/93 & response to comments88176653
3/1/1993C H 2 M Hill, IncEnvironmental Protection Agency - Region 9Final rpt for effectiveness evaluation of lower Canyon interceptor well field, w/maps88176812
3/9/1993Dante Rodriguez / Environmental Protection Agency - Region 9David Jones / Environmental Protection Agency - Region 9Memo: Summary of 2/3/93 meeting outcome (FS/ROD)88179581
3/16/1993 - -Final community relations plan88176491
3/17/1993Stringfellow Advisory Committee -Excerpt fr transcript of Stringfellow Advisory Committee (SAC) meeting88176263
3/17/1993 - -Mtg agenda: Stringfellow advisory committee (SAC) mtg, w/attchs & marginalia (Redacted - FOIA ex 5)88177299
3/23/1993Dante Rodriguez / Environmental Protection Agency - Region 9Stringfellow Advisory CommitteeLtr: Effectiveness evaluation of Lower Canyon interceptor well field final rpt, w/o encl88179809
4/1/1993C H 2 M Hill, IncEnvironmental Protection Agency - Region 9Significant storm/seismic events impact evaluation rpt, v188176165
4/1/1993C H 2 M Hill, IncEnvironmental Protection Agency - Region 9Significant storm/seismic events impact evaluation rpt, v288176166
4/14/1993Udai Singh / C H 2 M Hill, IncDante Rodriguez / Environmental Protection Agency - Region 9Ltr: Significant storm/seismic events impact evaluation rpt, w/o encl88180120
4/23/1993Dante Rodriguez / Environmental Protection Agency - Region 9Stringfellow Advisory CommitteeLtr: Significant storm/seismic events impact evaluation rpt, w/o encl88180119
5/1/1993C H 2 M Hill, IncEnvironmental Protection Agency - Region 9Rainfall runoff monitoring program, 1989-92, v188176567
5/1/1993C H 2 M Hill, IncEnvironmental Protection Agency - Region 9Rainfall runoff monitoring program, 1989-92, v288176569
5/10/1993Denise Dahlquist / NONECarol Browner / Environmental Protection Agency - Region 9Ltr: Private citizen concerns re site cleanup (public/community, FY 92 & 93), w/rtg slip 6/16/9388180063
5/19/1993 - -Mtg agenda: SAC Stringfellow advisory committee, FY 93, w/mtg minutes, attendance log & excerpt fr transcript of mtg of 3/17/9388176555
5/21/1993Dante Rodriguez / Environmental Protection Agency - Region 9Nancy Lindsay / Environmental Protection Agency - Region 9Memo: FS completion & final ROD (FS/ROD)88179580
5/28/1993US Dept of Health & Human Services - Agency for Toxic Substances & Disease RegistryEnvironmental Protection Agency - Region 9Revised site review & update rpt, MISC (ATSDR), w/TL to D Rodriguez fr G Eng 6/2/9388176515
5/28/1993CA Environmental Protection Agency - Dept of Toxic Substances ControlEnvironmental Protection Agency - Region 9Site review & update (9/21/92, revised 5/28/93) (ATSDR), w/TL to B Jines fr G Eng 6/2/9388176856
6/1/1993Bechtel Environmental, IncPyrite Canyon Group, IncRoutine groundwater monitoring annual rpt, spring 199388176657
6/1/1993Bechtel Environmental, IncPyrite Canyon Group, IncRoutine groundwater monitoring annual rpt, spring 1993, w/TL to A Cola fr D Bergman 6/17/9288176655
6/1/1993Bechtel Environmental, IncPyrite Canyon Group, IncRoutine groundwater monitoring annual rpt, spring 199388176656
6/1/1993Bechtel Environmental, IncPyrite Canyon Group, IncCommunity extraction system interim operation, 6 month evaluation rpt #1, w/TL to J Cola fr D Bergman 6/17/9288176638
6/9/1993Dante Rodriguez / Environmental Protection Agency - Region 9 -How modeling will be used for remedial alternative selection (FS/ROD)88179592
6/9/1993Marie McCrink / CA Environmental Protection Agency - Dept of Toxic Substances ControlRichard Bailey / CA Environmental Protection Agency - Dept of Toxic Substances ControlMemo: Draft onsite FS workplan outline (FS/modeling)88179593
6/10/1993Dante Rodriguez / Environmental Protection Agency - Region 9Melba Dunlap / Riverside County - Board of SupervisorsLtr: 6/30/96 mtg re land use planning & institutional controls, w/proposed agenda88178971
6/10/1993Dante Rodriguez / Environmental Protection Agency - Region 9Kurt Berchtold / CA Regional Water Quality Control Board - Santa Ana RegionLtr: Background levels of sulfate & nitrate in Glen Avon aquifer88180350
6/16/1993 - -Mtg Agenda: SAC Stringfellow advisory committee, FY 93, w/mtg minutes for 5/19/9388180112
6/26/1993Roberta Hedeen / Environmental Protection Agency - Region 9 -Pesticides/PCBs fr SVE field test, split sampling plan (soil sampling)88176242
7/1/1993Dante Rodriguez / Environmental Protection Agency - Region 9 -Mtg agenda: Onsite FS work (Modeling/FS), w/maps & logs (redacted - FOIA ex 5)88177298
7/2/1993Dante Rodriguez / Environmental Protection Agency - Region 9 -Sampling & analysis plan, soil & soil gas sampling during SVE test, w/TL to A Crockett fr D Rodriguez88176245
7/3/1993Dante Rodriguez / Environmental Protection Agency - Region 9Stringfellow Advisory CommitteeTL: Hazardous waste site rainfall runoff monitoring program summary rpt88180109
7/13/1993Bicka Barlow / I C F Technology, IncDante Rodriguez / Environmental Protection Agency - Region 9Memo: Split sample collection (soil sampling)88179485
7/21/1993 - -Mtg agenda: Stringfellow advisory committee, FY 93, w/mtg minutes88180114
7/28/1993Marie McCrink / CA Environmental Protection Agency - Dept of Toxic Substances ControlRichard Bailey / CA Environmental Protection Agency - Dept of Toxic Substances ControlMemo: Transmits on-site FS workplan (FS/ROD), w/attch88176211
8/1/1993Bechtel Environmental, IncPyrite Canyon Group, IncFinal interim rpt of feasibility of re-injection & screening of water management options, w/TL to J Cola fr D Bergman 8/20/93 & maps88176670
8/9/1993Bicka Barlow / I C F Technology, IncDante Rodriguez / Environmental Protection Agency - Region 9Memo: Split sample collection (soil sampling)88179486
8/10/1993Dante Rodriguez / Environmental Protection Agency - Region 9Richard Bailey / CA Environmental Protection Agency - Dept of Toxic Substances ControlLtr: Possible update for Stringfellow risk assessment88179432
8/27/1993Curtis Schmidt / Science Applications International CorpDante Rodriguez / Environmental Protection Agency - Region 9Ltr: Transmits Feasibility/practicality of mtg groundwater ARARs beneath site (corrections to draft 1) (FS/ROD), w/attch88177245
9/1/1993Bechtel Environmental, IncPyrite Canyon Group, IncFinal zone 1 dewatering system design rpt, w/TL to J Cola fr D Bergman 9/17/93, response to comments & maps88176661
9/1/1993Bechtel Environmental, IncPyrite Canyon Group, IncFinal zone 3 field investigation plan (reinjection), w/TLs to J Cola fr D Bergman 9/8/93, comments & maps88176667
9/7/1993Gerald Jolliffe / Riverside County - Planning DeptDante Rodriguez / Environmental Protection Agency - Region 9Ltr: General plan amendment (land use), w/envelope88177225
9/9/1993Dante Rodriguez / Environmental Protection Agency - Region 9 -Mtg agenda: Stringfellow technical committee mtg re ROD progress, w/attchs (Redacted - FOIA ex 5)88179585
9/14/1993James Keegan / Terra-Vac, IncE G & G Idaho, IncVapor sample collection & analysis rpt for Stringfellow (soil gas sampling)88176252
9/15/1993 - -Mtg agenda: Stringfellow advisory committee (SAC), w/7/21/93 mtg minutes (Redacted - FOIA ex 5)88180111
9/16/1993Mary Hart / I C F Technology, IncEnvironmental Protection Agency - Region 9Data validation rpt: Case #20415, memo #1, RAS pesticides/PCBs for 8 soil samples, collected 7/19-7/20/93 (soil sampling), w/TL88176253
9/21/1993Anjana Vig / I C F Technology, IncEnvironmental Protection Agency - Region 9Data validation rpt: Case #20335, memo #1, RAS pesticides/PCBs for NY239-NY251 samples, collected 7/93 (soil sampling), w/TL to Rodriguez fr M Weiner88176254
9/21/1993Dante Rodriguez / Environmental Protection Agency - Region 9Richard Bailey / CA Environmental Protection Agency - Dept of Toxic Substances ControlLtr: Stringfellow FS deliverables (FS/ROD)88179564
9/29/1993Dante Rodriguez / Environmental Protection Agency - Region 9Kurt Berchtold / CA Regional Water Quality Control Board - Santa Ana RegionLtr: Stringfellow PRP technical committee meeting for final ROD88179590
9/30/1993Nancy Lindsay / Environmental Protection Agency - Region 9Mark Leary / CA Environmental Protection Agency - Dept of Toxic Substances ControlLtr: Applicable or relevant & appropriate requirements (ARARs), FS/ROD88179575
10/19/1993Dante Rodriguez / Environmental Protection Agency - Region 9Gerald Jolliffe / Riverside County - Planning DeptLtr: Revision to Jurupa community plan incorporating institutional controls (land use), w/attchs88178974
10/20/1993 - -Original data tables for background sulfate & nitrate in zones 3 & 488176805
10/20/1993Stringfellow Advisory Committee -Mtg agenda: Stringfellow Advisory Committee (SAC) mtg, w/9/15/93 mtg minutes & attchs (Redacted - FOIA ex 5)88177293
10/22/1993Kenneth Brown / Environmental Protection Agency - Environmental Monitoring Systems LaboratoryDante Rodriguez / Environmental Protection Agency - Region 9Memo: Transmits 9/14/93 vapor sample collection & analysis rpt (soil gas sampling), w/attch88179489
10/27/1993 - -Agenda & handouts for EPA/DTSC meeting to discuss proposed plan (FS/ROD)88176774
10/27/1993Richard Bailey / CA Environmental Protection Agency - Dept of Toxic Substances ControlDante Rodriguez / Environmental Protection Agency - Region 9Ltr: 10/19/93 ltr to Riverside County re policy changes & recommends change re hydraulic control of aquifer (land use), w/handwritten post-its88178975
10/27/1993Dante Rodriguez / Environmental Protection Agency - Region 9 -Mtg agenda: EPA/DTSC project mtg to discuss ROD issues & proposed plan (FS/ROD) (Redacted - FOIA ex 5)88179573
11/16/1993Dominic DiGiulio / Environmental Protection Agency - Region 6Richard Freitas / Environmental Protection Agency - Region 9Memo: Review of soil vapor extraction field test88180517
11/17/1993Stringfellow Advisory Committee -Mtg agenda: Stringfellow Advisory Committee (SAC) mtg, w/10/20/93 mtg minutes & attchs (Redacted - FOIA ex 5)88177294
12/1/1993Bechtel Environmental, IncPyrite Canyon Group, IncSeismic exposure rpt, Pyrite Canyon site, w/TL D Rodriguez fr H Simens 12/20/9388176151
12/1/1993Bechtel Environmental, IncPyrite Canyon Group, IncCommunity extraction system interim operation, 6 month evaluation rpt #288176811
12/1/1993Bechtel Environmental, IncPyrite Canyon Group, IncRoutine groundwater monitoring semi-annual rpt, fall 93, w/TL to J A Cola fr D Bergman 12/22/93 (Hendler v US, discovery)88176913
12/1/1993Bechtel Environmental, IncPyrite Canyon Group, IncRoutine groundwater monitoring semmi-annual rpt, fall 9388176914
12/1/1993Bechtel Environmental, IncPyrite Canyon Group, IncRoutine groundwater monitoring semi-annual rpt, fall 9388176915
12/3/1993 - -State & local applicable or relevant & appropriate requirements (ARARs), (Final ROD), (draft)88177233
12/9/1993Planning NetworkPyrite Canyon Group, IncDemographic study rpt, w/TL to J Hanson fr D Bergman 1/27/94 & apps A (census info), B (photos) & C (info sources/oversize maps)88176152
12/13/1993 - -EPA/DTSC meeting handouts & notes re remedial alternatives (FS/ROD)88179572
12/13/1993 - -EPA/DTSC meeting to discuss development requirements for zones 1, 2 & 3 final ROD88179607
12/29/1993Nancy Lindsay / Environmental Protection Agency - Region 9Mark Leary / CA Environmental Protection Agency - Dept of Toxic Substances ControlLtr: Stringfellow FS completion (FS/ROD), w/mtg agenda88179571
1/1/1994S S Papadopulos & Assoc, IncPyrite Canyon Group, IncAnalysis of sulfate & nitrate, w/TL to D Rodriguez fr D Bergman 1/12/94 & notes88176806
1/1/1994Jim Hanson / Environmental Protection Agency - Region 9 -RA technologies/alternatives, zone 1 (FS/ROD)88179569
1/11/1994Dante Rodriguez / Environmental Protection Agency - Region 9 -Summary of rainfall/runoff monitoring program, storm/seismic & institutional failure for technical committee mtg88179434
1/12/1994 - -Remedial alternative #2 for EPA/DTSC meetings (final ROD)88176172
1/12/1994 - -Sulfate & nitrate distribution & location of wells (zone 3 & 4)88176807
1/12/1994Stringfellow Advisory Committee -Mtg agenda: Stringfellow Advisory Committee (SAC) mtg, w/11/17/93 mtg minutes (Redacted - FOIA ex 5)88179494
1/12/1994Stringfellow Advisory Committee -Draft RA technologies/alternatives, zone 1 (final ROD)88179606
1/25/1994Dante Rodriguez / Environmental Protection Agency - Region 9Daniel Bergman / Pyrite Canyon Group, IncMemo: Stringfellow technical committee meeting to discuss base case modeling, institutional failure, etc, w/agenda88179582
2/2/1994Dante Rodriguez / Environmental Protection Agency - Region 9Mark Katchen / ENVIRON Holdings, Inc - ENVIRON International CorpMemo: Background information for technical committee meeting88179589
2/3/1994Dante Rodriguez / Environmental Protection Agency - Region 9 -Proposed agenda for EPA/DTSC mtg on FS/ROD issues, w/TL to R Bailey fr D Rodriguez & notes fr 1/31/94 FS/ROD discussion (Redacted - FOIA ex 5)88179070
2/9/1994Dante Rodriguez / Environmental Protection Agency - Region 9 -Mtg agenda: Tech committee mtg re base case modeling & institutional failure, w/TL to Dahl fr Rodriguez & roster of attendees (Redacted - FOIA ex 5)88179596
2/18/1994Nancy Lindsay / Environmental Protection Agency - Region 9Mark Leary / CA Environmental Protection Agency - Dept of Toxic Substances ControlLtr: Completion of supplemental FS, need for additional field work (final ROD), w/attchs A & B88176780
2/23/1994 - -Stringfellow Advisory Committee (SAC) meeting re flood control, w/TL to A Bain fr B Draper 4/5/9488176171
2/23/1994Stringfellow Advisory Committee -Mtg agenda: Stringfellow Advisory Committee (SAC) mtg of 1/24/94, w/1/12/94 mtg minutes & attchs (Redacted - FOIA ex 5)88177295
2/24/1994Dante Rodriguez / Environmental Protection Agency - Region 9 -Mtg notes: Project meeting, 2/24/94 (FS/ROD)88179568
3/17/1994Dante Rodriguez / Environmental Protection Agency - Region 9Richard Bailey / CA Environmental Protection Agency - Dept of Toxic Substances ControlLtr: Confirmation of 3/22/94 DTSC/EPA meeting request for DTSC written statement of rationale for proposed additional field studies (FS/ROD), w/TL88179567
3/22/1994 - -Agenda, handouts & notes for EPA/DTSC FS/ROD project progress meeting88176781
3/22/1994Dante Rodriguez / Environmental Protection Agency - Region 9Mark Catchen / ENVIRON Holdings, Inc - ENVIRON International Corp
Joe Highland / ENVIRON Holdings, Inc - ENVIRON International Corp
Memo: Transmits workplan for additional risk assessment, w/o attch88178979
3/23/1994Dante Rodriguez / Environmental Protection Agency - Region 9Daniel Bergman / Pyrite Canyon Group, IncMemo: Technical committee meeting to discuss institutional failure, rainfall/runoff, vadose modeling, etc, w/agenda for 4/12/94 mtg88179605
3/24/1994Francis McLean / US Dept of the Interior - Bureau of Reclamation -Ltr: Transmits technical review & comments on institutional failure scenarios study, w/attchs88176198
4/1/1994S S Papadopulos & Assoc, IncPyrite Canyon Group, IncRainfall, runoff & recharge characteristics of zones 1 & 2, w/TL to D Rodriguez fr D Bergman 5/2/9488176149
4/4/1994Bert Bledsoe / Environmental Protection Agency - Region 6Richard Freitas / Environmental Protection Agency - Region 9Memo: Review & comments on analysis of sulfate & nitrate conditions in zone 4, w/practical nonparametric statistics88175939
4/4/1994Richard Freitas / Environmental Protection Agency - Region 9Dante Rodriguez / Environmental Protection Agency - Region 9Memo: Draft comments to analysis of sulfate & nitrate conditions in zone 4, 1/94, w/TLs to S Larson & R Bailey fr D Rodriguez88176809
4/8/1994Mark Leary / CA Environmental Protection Agency - Dept of Toxic Substances ControlNancy Lindsay / Environmental Protection Agency - Region 9Ltr: Issues re final ROD (FS/ROD), w/attchs A & B88176797
4/8/1994Mark Howland / S S Papadopulos & Assoc, IncDante Rodriguez / Environmental Protection Agency - Region 9Memo: Transmits list of wells sampled (sulfate/nitrate), w/attchs88179608
4/8/1994Steven Larson / S S Papadopulos & Assoc, IncDante Rodriguez / Environmental Protection Agency - Region 9Ltr: Transmits summary of response to comments on sulfate & nitrate background issue, w/TL & attch88179610
4/12/1994Dante Rodriguez / Environmental Protection Agency - Region 9 -Institutional failure notes, overheads & outline for technical committee mtg (Redacted - FOIA ex 5)88177292
4/20/1994Stringfellow Advisory Committee -Mtg agenda: Stringfellow Advisory Committee (SAC) mtg, w/2/24/94 mtg minutes & attchs (Redacted - FOIA ex 5)88177296
4/26/1994Mark Howland / S S Papadopulos & Assoc, IncDante Rodriguez / Environmental Protection Agency - Region 9Memo: Transmits list of wells sampled & addresses (sulfate/nitrate), w/attch88179609
5/1/1994Bechtel Environmental, IncPyrite Canyon Group, IncFinal community extraction system recommended plan for hydraulic control & treatment & disposal, w/TL to Cola fr Bergman 5/12/94 & comments88176058
5/2/1994Dante Rodriguez / Environmental Protection Agency - Region 9Joe Highland / ENVIRON Holdings, Inc - ENVIRON International Corp
Mark Katchen / ENVIRON Holdings, Inc - ENVIRON International Corp
Memo: Proposal by Dept of Toxic Substance Contol (DTSC) for FS completion (FS/ROD), w/o encl88179565
5/17/1994Dante Rodriguez / Environmental Protection Agency - Region 9Daniel Bergman / Pyrite Canyon Group, IncMemo: Technical committee meeting to discuss remedial alternative, institutional failure, risk assessment, etc, w/agenda for 6/2/94 mtg88179604
5/27/1994Steven Acree / Environmental Protection Agency - Region 6Dante Rodriguez / Environmental Protection Agency - Region 9Memo: Background concentrations of sulfates in groundwater (sulfate/nitrate), w/attchs88176189
6/1/1994Bechtel Environmental, IncPyrite Canyon Group, IncCommunity extraction system interim operation, 6 month evaluation rpt #3, w/TL to J A Cola fr D Bergman 6/28/9488176054
6/1/1994Bechtel Environmental, IncPyrite Canyon Group, IncConstruction completion & construction as-built rpt for all zone 1 (dewatering), w/TLs to J A Cola fr D Bergman 5/5/94 & 6/28/94, v188176056
6/1/1994Bechtel Environmental, IncPyrite Canyon Group, IncConstruction completion & construction as-built rpt for all zone 1, v2 (dewatering)88176057
6/1/1994Bechtel Environmental, IncPyrite Canyon Group, IncEvaluation of proposed remedial alternatives for zone 1, v2 (FS/ROD)88176130
6/1/1994Bechtel Environmental, IncPyrite Canyon Group, IncEvaluation of proposed remedial alternatives for zone 1, v3 (FS/ROD)88176131
6/1/1994Bechtel Environmental, IncPyrite Canyon Group, IncRoutine groundwater monitoring biennial rpt, Spring 1994, v588177032
6/1/1994Bechtel Environmental, IncPyrite Canyon Group, IncRoutine groundwater monitoring biennial rpt, Spring 1994, v688177033
6/1/1994Bechtel Environmental, IncPyrite Canyon Group, IncRoutine groundwater monitoring biennial rpt, Spring 1994, v288177029
6/1/1994Bechtel Environmental, IncPyrite Canyon Group, IncRoutine groundwater monitoring biennial rpt, Spring 1994, v3 of 11 (appendix B continued), w/graphics (proj #22020-004)88177030
6/1/1994Bechtel Environmental, IncPyrite Canyon Group, IncRoutine groundwater monitoring biennial rpt, Spring 1994, v488177031
6/1/1994Bechtel Environmental, IncPyrite Canyon Group, IncRoutine groundwater monitoring biennial rpt, Spring 1994, v1, w/TL to J A Cola fr D Bergman 6/30/9488177028
6/1/1994Bechtel Environmental, IncPyrite Canyon Group, IncRoutine groundwater monitoring biennial rpt, Spring 1994, v788177034
6/1/1994Bechtel Environmental, IncPyrite Canyon Group, IncRoutine groundwater monitoring biennial rpt, Spring 1994, v888177035
6/1/1994Bechtel Environmental, IncPyrite Canyon Group, IncRoutine groundwater monitoring biennial rpt, Spring 1994, v988177036
6/1/1994Bechtel Environmental, IncPyrite Canyon Group, IncRoutine groundwater monitoring biennial rpt, Spring 1994, v1088177037
6/1/1994Bechtel Environmental, IncPyrite Canyon Group, IncRoutine groundwater monitoring biennial rpt, Spring 1994, v1188177038
6/1/1994Bechtel Environmental, IncPyrite Canyon Group, IncEvaluation of proposed remedial alternative for zone 1 (FS/ROD), w/TL to J A Cola fr D Bergman 6/29/9488177041
6/2/1994 - -Institutional failure agenda, handouts & list of attendees for technical committee mtg (Redacted - FOIA ex 5)88179061
6/3/1994Stringfellow Advisory Committee -Mtg agenda: Stringfellow Advisory Committee (SAC) mtg, w/4/20/94 mtg minutes & attch (Redacted - FOIA ex 5)88179493
7/1/1994Bechtel Environmental, IncPyrite Canyon Group, IncRA rpt for zone 1 dewatering system element of work, w/TL to J A Cola fr D Bergman 7/27/9488176055
7/5/1994Dante Rodriguez / Environmental Protection Agency - Region 9 -Memo: Transmits summary of technical committee meeting of 6/2/94, w/attch88179601
7/18/1994Dante Rodriguez / Environmental Protection Agency - Region 9 -Summary of FS work to date, (FS/ROD) (Redacted - FOIA ex 5)88179060
8/1/1994Bechtel Environmental, IncPyrite Canyon Group, IncFinal water management rpt, w/TL to J A Cola fr D Bergman 8/31/9488176042
8/1/1994Bechtel Environmental, IncPyrite Canyon Group, IncRA rpt for community extraction system hydraulic control & treatment & disposal element of work, w/TL to J A Cola fr D Bergman 8/30/9488176213
8/1/1994C H 2 M Hill, IncEnvironmental Protection Agency - Region 9Institutional failure scenarios study, draft rpt, v1 - text88177234
8/1/1994C H 2 M Hill, IncEnvironmental Protection Agency - Region 9Institutional failure scenarios study, draft rpt, v2 - appendices88177235
8/1/1994CA Dept of Health Services - Toxic Substances Control Div -Newsletter: Stringfellow update (1/90 - 8/94)88177325
8/4/1994Dante Rodriguez / Environmental Protection Agency - Region 9 -Ltr: Draft institutional failure rpt, w/o encl, w/list of SAC members88179441
8/5/1994Dante Rodriguez / Environmental Protection Agency - Region 9Stringfellow Advisory CommitteeLtr: Transmits documents for EPA 5-year reviews & long-term funding mechanisms (SAC), w/encls88176260
8/12/1994Udai Singh / C H 2 M Hill, IncDante Rodriguez / Environmental Protection Agency - Region 9TL: Draft of institutional failure scenarios rpt88179442
8/18/1994Dante Rodriguez / Environmental Protection Agency - Region 9Richard Freitas / Environmental Protection Agency - Region 9Memo: Follow-up to meeting re cleanup goals for sulfates & nitrates in zone 3 & 4, w/ltr of 8/18/94 & 2 TLs to K Berchtold & R Bailey fr D Rodriguez88179612
8/22/1994 - -Articles re soil flushing88176206
8/22/1994John Matthews / Environmental Protection Agency - Region 6Steve Loupe / Environmental Protection Agency - Region 9Memo: Transmits literature search & evaluation re soil flushing, w/attch88176205
8/22/1994Thomas Dahl / Environmental Protection Agency - National Enforcement Investigations CenterLaurie Williams / Environmental Protection Agency - Region 9Memo: Review & comments on evaluation of proposed remedial alternatives for zone 1, 6/94 (FS/ROD)88179561
8/25/1994Dante Rodriguez / Environmental Protection Agency - Region 9Daniel Bergman / Pyrite Canyon Group, IncMemo: Technical committee meeting to discuss soil vapor extraction (SVE), institutional failure, etc (FS/ROD), w/TL to K Kapur fr D Rodriguez & agenda88179600
8/29/1994 - -EPA/DTSC meeting agenda & handouts (FS/ROD), w/attchs (Redacted - FOIA ex 5)88177291
8/31/1994Stringfellow Advisory Committee -Mtg agenda: Stringfellow Advisory Committee (SAC) meeting of 6/3/94, w/encls88179492
9/1/1994Pyrite Canyon Group, Inc -1992-94 rainfall runoff monitoring program, v1 (summary rpt), w/TL to J A Cola fr D Bergman 9/22/9488176029
9/1/1994Pyrite Canyon Group, Inc -1992-94 rainfall runoff monitoring program, v2 (data & charts)88176030
9/7/1994Udai Singh / C H 2 M Hill, IncDante Rodriguez / Environmental Protection Agency - Region 9Ltr: Transmits review comments on 4/8/94 ltr to N Lindsay fr M Leary re FS assessment (data gaps) & additional data collection needs (FS/ROD) w/attchs88176178
9/12/1994Nancy Lindsay / Environmental Protection Agency - Region 9Stan Phillippe / CA Dept of Health Services - Toxic Substances Control DivLtr: Transmits EPA technical consultants responses to DTSC proposed additional investigatory work to fill perceived data gaps (FS/ROD), w/attchs88176179
9/12/1994Stringfellow Advisory Committee -Excerpt fr transcript of Stringfellow Advisory Committee (SAC) meeting88176265
9/21/1994Dante Rodriguez / Environmental Protection Agency - Region 9 -Stringfellow FS addendum (FS/ROD), w/marginalia & attch88179558
10/19/1994Dante Rodriguez / Environmental Protection Agency - Region 9 -Draft rpt for institutional failure scenarios, sulfate & nitrate cleanup goals, 5-year reviews & funding mechanisms used in Superfund process (SAC)88179496
10/24/1994Margaret Felts / CA Environmental Protection Agency - Dept of Toxic Substances ControlKeith Takata / Environmental Protection Agency - Region 9Ltr: Completion of supplemental FS for Stringfellow (FS/ROD), w/schedules88176181
10/24/1994 - -Mtg agenda: Draft EPA/DTSC meeting re FS completion & cleanup (FS/ROD)88179559
11/1/1994Bechtel Environmental, IncPyrite Canyon Group, IncZone 1 dewatering system, 6 month evaluation rpt #1, w/TL to J A Cola fr D Bergman 11/23/9488176163
11/1/1994Bechtel Environmental, IncPyrite Canyon Group, IncFinal soil vapor extraction field test evaluation rpt, v1, w/TL to J A Cola fr D Bergman 10/31/9488177042
11/1/1994Bechtel Environmental, IncPyrite Canyon Group, IncFinal soil vapor extraction field test evaluation rpt, v288177043
11/1/1994Bechtel Environmental, IncPyrite Canyon Group, IncFinal soil vapor extraction field test evaluation rpt, v388177044
11/1/1994Bechtel Environmental, IncPyrite Canyon Group, IncFinal soil vapor extraction field test evaluation rpt, v488177045
11/1/1994Vance Fong / Environmental Protection Agency - Region 9
Dante Rodriguez / Environmental Protection Agency - Region 9
-Soil & soil gas sampling & analysis (SAP) during SVE test (final rpt)88177217
11/1/1994Richard Freitas / Environmental Protection Agency - Region 9Dante Rodriguez / Environmental Protection Agency - Region 9Memo: Draft comments on potential for contaminant transport through fractured bedrock beneath Stringfellow (FS/ROD)88179557
11/4/1994Steve Loupe / Environmental Protection Agency - Region 9Dante Rodriguez / Environmental Protection Agency - Region 9Memo: Transmits evaluation of Technical feasibility/practicality of mtg groundwater ARARs beneath site, zones 1 & 2 (FS/ROD), w/attchs88177246
11/7/1994Dante Rodriguez / Environmental Protection Agency - Region 9Daniel Bergman / Pyrite Canyon Group, IncMemo: Technical committee meeting to discuss soil vapor extraction (SVE) final rpt time permitting, etc, w/TL to T Dahl fr D Rodriguez & attch88179598
11/18/1994Steve Loupe / Environmental Protection Agency - Region 9Dante Rodriguez / Environmental Protection Agency - Region 9Memo: Transmits technical summaries to support Tech feasibility/practicality of mtg gw ARARs beneath site zones 1 & 2 (RS/ROD), w/attchs88177247
12/1/1994Bechtel Environmental, IncPyrite Canyon Group, IncRoutine groundwater monitoring semi-annual rpt - fall 94, v1, w/TL to J A Cola fr D Bergman 12/29/9488176160
12/1/1994Bechtel Environmental, IncPyrite Canyon Group, IncRoutine groundwater monitoring semi-annual rpt - fall 94, v288176161
12/1/1994Bechtel Environmental, IncPyrite Canyon Group, IncCommunity extraction system interim operation, 6 month evaluation rpt #4, w/TL to J A Cola fr D Bergman 12/22/9488176164
12/6/1994 - -List of attendees for Stringfellow technical committee meeting88179597
12/7/1994 - -Handouts re components & alternatives (FS/ROD)88179553
12/7/1994Stringfellow Advisory Committee -Mtg agenda: Stringfellow Advisory Committee (SAC) mtg, w/10/19/94 mtg minutes & attchs (Redacted - FOIA ex 5)88177297
12/8/1994ChiYuan Fan / Environmental Protection Agency - Risk Reduction Engineering LaboratoryJack Hubbard / Environmental Protection Agency - Superfund Technology Demonstration DivMemo: Review mtg re Final soil vapor extraction (SVE) field test evaluation rpt, 11/94, w/agenda & sign-in sheet88178977
1/1/1995S S Papadopulos & Assoc, IncPyrite Canyon Group, IncAchievement of performance standard community extraction system element of work88176219
1/1/1995S S Papadopulos & Assoc, IncPyrite Canyon Group, IncMeasurement of performance standard upgradient interception component (maintenance) (dewatering)88177067
1/1/1995S S Papadopulos & Assoc, IncPyrite Canyon Group, IncMeasurement of performance standard bedrock hydraulic control component (dewatering), w/TL to J Cola fr D Bergman 1/4/9588177284
1/9/1995William Draper / CA Environmental Protection Agency - Dept of Toxic Substances ControlStringfellow Advisory CommitteeLtr: Transmits map & outline distributed at 12/7/94 SAC mtg by County of Riverside (for attch to mtg minutes), w/attchs88177204
1/10/1995Daniel Bergman / Pyrite Canyon Group, IncJo Ann Cola / Environmental Protection Agency - Region 9Ltr: Residual moisture precludes in-situ SVE test in decomposed granite & deployment of SVE technology at site, w/attchs88177227
1/18/1995Stringfellow Advisory Committee -Mtg agenda (SAC): Soil vapor extraction, project rpts, FS/ROD status, community relations etc, w/mtg minutes & attchs (Redacted - FOIA ex 5)88177307
1/25/1995Dante Rodriguez / Environmental Protection Agency - Region 9Mark Katchen / ENVIRON Holdings, Inc - ENVIRON International CorpMemo: Stringfellow documents re data gaps issue & FS/ROD completion (handwritten)88179552
1/27/1995Keith Takata / Environmental Protection Agency - Region 9Stan Phillipe / CA Environmental Protection Agency - Dept of Toxic Substances ControlLtr: Technical issues re zone 1 (FS/ROD), w/TL to S Phillipe fr D Rodriguez & notes88179550
1/30/1995Dante Rodriguez / Environmental Protection Agency - Region 9Mark Katchen / ENVIRON Holdings, Inc - ENVIRON International CorpMemo: Data gaps issue (FS/ROD), w/o encl88179549
1/30/1995Dante Rodriguez / Environmental Protection Agency - Region 9Daniel Bergman / Pyrite Canyon Group, IncMemo: Stringfellow technical committee mtg of 2/14/95, w/attchs (Redacted - FOIA ex 5)88179595
2/2/1995Dante Rodriguez / Environmental Protection Agency - Region 9Mark Katchen / ENVIRON Holdings, Inc - ENVIRON International CorpMemo: Stringfellow technical Committee meeting re dewatering (FS/ROD), w/o encl88179548
2/15/1995Stringfellow Advisory Committee -Mtg agenda (SAC): Project rpt, community relations, dewatering, remedial alternatives, site mgt, w/1/18/95 mtg minutes & handwritten notes88177197
3/2/1995Dante Rodriguez / Environmental Protection Agency - Region 9Richard Bailey / CA Environmental Protection Agency - Dept of Toxic Substances ControlMemo: EPA's technical assessment of DTSC's proposed additional FS work (FS/ROD)88178984
3/6/1995Keith Takata / Environmental Protection Agency - Region 9Stan Phillippe / CA Dept of Health Services - Toxic Substances Control DivLtr: Response to DTSC concerns at 2/15/95 SAC mtg re status of dewatering & FS completion (FS/ROD), w/concurrence copy, w/o attch88178985
3/13/1995CA Environmental Protection Agency - Dept of Toxic Substances Control -Analytical rpt pkg - water samples 14582-14587 for volatile organic analysis, collected 3/13/95 (site maintenance)88177208
3/15/1995Keith Takata / Environmental Protection Agency - Region 9Daniel Bergman / Pyrite Canyon Group, IncLtr: Requests PCG undertake work to complete FS for final remedy (FS/ROD), w/concurrence copy88178987
3/17/1995ChiYuan Fan / Environmental Protection Agency - Superfund Technology Demonstration DivJack Hubbard / Environmental Protection Agency - Superfund Technology Demonstration DivMemo: Review of Final soil vapor extraction (SVE) field test evaluation rpt, 11/94, w/attchs88177230
3/20/1995ChiYuan Fan / Environmental Protection Agency - Superfund Technology Demonstration DivDante Rodriguez / Environmental Protection Agency - Region 9
Jo Ann Cola / Environmental Protection Agency - Region 9
Memo: Review of dewatering analysis for implementation of soil vapor extraction (SVE) technology, w/figures88177231
4/5/1995Dante Rodriguez / Environmental Protection Agency - Region 9Daniel Bergman / Pyrite Canyon Group, IncLtr: Request to establish agreement with PCG & DTSC re FS completion work & transmits 3/15/95 Statement of work (draft) (FS/ROD)88177248
4/5/1995Dante Rodriguez / Environmental Protection Agency - Region 9Stan Phillippe / CA Dept of Health Services - Toxic Substances Control Div
Keith Takata / Environmental Protection Agency - Region 9
Donald Plain / CA Environmental Protection Agency - Dept of Toxic Substances Control
Richard Bailey / CA Environmental Protection Agency - Dept of Toxic Substances Control
Daniel Bergman / Pyrite Canyon Group, Inc
Memo: 4/12/95 FS planning mtg with EPA, DTSC & settling defendants (FS/ROD), w/agenda, 3/29/95 EPA/DTSC mtg summary, 4/12/95 mtg sign-in sheet88178988
4/5/1995Stan Phillippe / CA Dept of Health Services - Toxic Substances Control DivKeith Takata / Environmental Protection Agency - Region 9Ltr: Failure of zone 1 extraction system, release of contaminated gw (site maintenance)88179059
4/12/1995Dante Rodriguez / Environmental Protection Agency - Region 9 -Mtg notes: FS mtg re items of work (FS/ROD)88178989
4/19/1995Stringfellow Advisory Committee -Mtg minutes (SAC): Project rpt, community relations, zone 1 release, w/attchs w/marginalia88177198
4/19/1995Stringfellow Advisory Committee -Mtg agenda (SAC): Project rpt, community relations, final remedy, zone 1 release, DTSC activities, w/2/15/95 mtg minutes88178921
4/28/1995CA Environmental Protection Agency - Dept of Toxic Substances Control -Analytical rpt pkg - water samples 14704-14705 for volatile organic analysis, collected 4/28/95 (site maintenance)88177211
4/28/1995Daniel Bergman / Pyrite Canyon Group, IncKeith Takata / Environmental Protection Agency - Region 9Ltr: Response to 3/15/95 & 4/5/95 ltrs & PCG willing to undertake FS completion tasks for final remedy (FS/ROD), w/fax copy88178990
4/28/1995Dante Rodriguez / Environmental Protection Agency - Region 9Richard Bailey / CA Environmental Protection Agency - Dept of Toxic Substances Control
Kurt Berchtold / CA Regional Water Quality Control Board - Santa Ana Region
Daniel Bergman / Pyrite Canyon Group, Inc
Mark Katchen / ENVIRON Holdings, Inc - ENVIRON International Corp
Memo: 5/10/95 technical committee mtg re soil vapor extraction (SVE) & zone 1 dewatering/hydraulic control, w/agenda88178872
4/28/1995Rohini Dasika / Pyrite Canyon Group, IncDante Rodriguez / Environmental Protection Agency - Region 9Memo: Transmits results for sampling fr 4/26/95 (site maintenance), w/attchs88178848
5/8/1995Richard Bailey / CA Environmental Protection Agency - Dept of Toxic Substances ControlDante Rodriguez / Environmental Protection Agency - Region 9Ltr: Review comments re Community extraction system interim operation 6-month evaluation rpt #4 (community wells), w/attch & TL88177275
5/10/1995Dante Rodriguez / Environmental Protection Agency - Region 9 -Mtg minutes: Technical committee mtg re soil vapor extraction & dewatering88178874
5/16/1995Nancy Lindsay / Environmental Protection Agency - Region 9John Tavaglione / Riverside CountyLtr: Assistance with site issues & role in developing decision, dealing with community input, permitting, land use issues & SAC, w/attchs88178923
5/16/1995Nancy Lindsay / Environmental Protection Agency - Region 9Raymond Haynes / CA SenateLtr: Assistance with site issues & role in developing decision, dealing with community input, permitting, land use issues & SAC, w/attchs88178924
5/16/1995Keith Takata / Environmental Protection Agency - Region 9Stan Phillippe / CA Dept of Health Services - Toxic Substances Control DivLtr: Responds to 4/5/95 ltr re release of contaminated groundwater in zone 1 & lists site maintenance actions underway, w/attch88178853
5/17/1995Stringfellow Advisory Committee -Mtg agenda (SAC): Project rpt, community relations, soil vapor extraction, zone 1 dewatering, FS, w/mtg minutes & attchs (Redacted - FOIA ex 5)88177308
5/25/1995Daniel Bergman / Pyrite Canyon Group, IncKeith Takata / Environmental Protection Agency - Region 9Ltr: Transmits proposal for additional upgradient recharge interception facilities & enhanced zone 1 extraction capability (dewatering), w/attch88177193
6/1/1995 - -Pretreatment plant (PTP) maintenance - capacities & improvements, w/handwritten post-it88178882
6/2/1995Dante Rodriguez / Environmental Protection Agency - Region 9Mark Katchen / ENVIRON Holdings, Inc - ENVIRON International Corp
Kurt Berchtold / CA Regional Water Quality Control Board - Santa Ana Region
Daniel Bergman / Pyrite Canyon Group, Inc
Richard Bailey / CA Environmental Protection Agency - Dept of Toxic Substances Control
Memo: 6/14-6/15/95 technical committee mtg re zone 1 dewatering proposal, zone 4 data & FS, w/agenda, attchs & handwritten post-it88177218
6/2/1995Dante Rodriguez / Environmental Protection Agency - Region 9Stringfellow Advisory CommitteeMemo: Summary of potential remediation objectives re 5/17/95 SAC mtg, w/handwritten post-it88178925
6/7/1995Richard Freitas / Environmental Protection Agency - Region 9Dante Rodriguez / Environmental Protection Agency - Region 9Memo: Comments on Community extraction system interim operation 6-month evaluation rpt #4 (community wells), 12/9488179036
6/20/1995Dante Rodriguez / Environmental Protection Agency - Region 9 -Mtg minutes: Summary of technical committee mtg 6/14-6/15/95 re zone 4 hydraulic control, zone 1 dewatering & FS88178876
6/21/1995Stringfellow Advisory Committee -Mtg agenda (SAC): Project rpt, community relations, zone 1 issues, zone 4 hydraulic control issues & FS, w/attchs w/marginalia88177202
7/12/1995Dante Rodriguez / Environmental Protection Agency - Region 9Daniel Bergman / Pyrite Canyon Group, Inc
Kurt Berchtold / CA Regional Water Quality Control Board - Santa Ana Region
Mark Katchen / ENVIRON Holdings, Inc - ENVIRON International Corp
Richard Bailey / CA Environmental Protection Agency - Dept of Toxic Substances Control
Memo: 8/1/95 technical committee mtg re zone 4 hydraulic control & zone 1 dewatering/hydraulic control, w/agenda88178878
7/21/1995Barclays Law Publishers -Barclays CA code of regulations section 22-66264.273 - Design & operating requirements & section 22-66264.18 - Location standards (rainfall/runoff)88178982
8/1/1995Pyrite Canyon Group, Inc -Summary rpt for 1994-95 rainfall/runoff monitoring program, w/computer diskette & TL to D Rodriguez fr D Bergman 8/25/9588177138
8/1/1995Pyrite Canyon Group, IncS S Papadopulos & Assoc, IncMeasurement of performance standard upgradient interception component (dewatering), w/TL to N Lindsey fr D Bergman 8/21/95 & responses to EPA comments88177139
8/1/1995Pyrite Canyon Group, IncS S Papadopulos & Assoc, IncMeasurement of performance standard bedrock hydraulic control component (dewatering), w/TL to Lindsey fr Bergman 8/21/95 & responses to EPA comments88177140
8/4/1995Environmental Protection Agency - Region 9 -Statement of work for site feasibility study (draft) (RS/ROD), w/TL to K Kapur fr D Rodriguez & handwritten post-it note88177249
8/8/1995Keith Takata / Environmental Protection Agency - Region 9Truman Beeler / Environmental Protection Agency - Washington, D CMemo: Request to Inspector General for Audit to review claims for advance match credit - cooperative agreement #V009380 (concurrence copy), w/attchs88177323
8/12/1995Kathleen Considine / CA Environmental Protection Agency - Dept of Toxic Substances ControlRichard Bailey / CA Environmental Protection Agency - Dept of Toxic Substances ControlMemo: Review of Achievement of performance standard - bedrock hydraulic control & upgradient interception components, both 5/96 (dewatering)88177273
8/15/1995Nancy Lindsay / Environmental Protection Agency - Region 9Daniel Bergman / Pyrite Canyon Group, IncLtr: Followup to 7/20/95 mtg re zone 1 hydraulic control, US v Stringfellow et al (dewateriing, CD/AOC), w/handwritten post-it note & TL88179003
8/28/1995CA Environmental Protection Agency - Dept of Toxic Substances Control -DTSC outline for additional hydrologic controls for construction, fall 1995 (dewatering), w/handwritten post-it88179033
8/28/1995Dante Rodriguez / Environmental Protection Agency - Region 9Kurt Berchtold / CA Regional Water Quality Control Board - Santa Ana Region
Daniel Bergman / Pyrite Canyon Group, Inc
Richard Bailey / CA Environmental Protection Agency - Dept of Toxic Substances Control
Mark Katchen / ENVIRON Holdings, Inc - ENVIRON International Corp
Memo: 9/12/95 technical committee mtg re zone 4 hydraulic control & zone 1 dewatering/hydraulic control, w/agenda (draft)88178964
9/1/1995Bechtel Environmental, IncPyrite Canyon Group, IncCommunity extraction system interim operation, 6 month evaluation rpt #5, w/TL to D Rodriguez fr D Bergman 9/20/9588177137
9/1/1995Bechtel Environmental, IncPyrite Canyon Group, IncRoutine groundwater monitoring annual rpt - Spring 1995, v2, w/encls88177163
9/1/1995Bechtel Environmental, IncPyrite Canyon Group, IncZone 1 dewatering system, 6 month evaluation rpt #2 (10/94 - 3/95), w/TL to D Rodriguez fr D Bergman 9/11/95 & response to comments re rpt #188177136
9/1/1995S S Papadopulos & Assoc, Inc
Bechtel Environmental, Inc
Pyrite Canyon Group, IncRoutine groundwater monitoring annual rpt - Spring 1995, v1, w/TL to D Rodriguez fr D Bergman & encls88177162
9/1/1995Bechtel Environmental, Inc
S S Papadopulos & Assoc, Inc
Pyrite Canyon Group, IncRoutine groundwater monitoring annual rpt - Spring 1995, v3, w/encls88177164
9/1/1995Bechtel Environmental, Inc
S S Papadopulos & Assoc, Inc
Pyrite Canyon Group, IncRoutine groundwater monitoring annual rpt - Spring 1995, v4, w/encls88177165
9/1/1995S S Papadopulos & Assoc, Inc
Bechtel Environmental, Inc
Pyrite Canyon Group, IncRoutine groundwater monitoring annual rpt - Spring 1995, v5, w/encls88177166
9/1/1995Bechtel Environmental, Inc
S S Papadopulos & Assoc, Inc
Pyrite Canyon Group, IncRoutine groundwater monitoring annual rpt - Spring 1995, v6, w/encls88177167
9/18/1995Dante Rodriguez / Environmental Protection Agency - Region 9 -Mtg notes: 9/13/95 technical committee mtg re zone 4 hydraulic control & zone 1 dewatering, w/sign-in sheet88178966
9/20/1995Stringfellow Advisory Committee -Mtg agenda: SAC mtg re community relations, zone 1, FS & zone 4, w/6/21/95 minutes & list of phone numbers (redacted - FOIA ex 5)88177254
9/21/1995Nancy Lindsay / Environmental Protection Agency - Region 9Daniel Bergman / Pyrite Canyon Group, IncLtr: Receipt of white paper & awaiting response re implementation of additional controls for zone 1 (dewatering, CD), w/handwritten post-it & TLs88179050
9/28/1995Dante Rodriguez / Environmental Protection Agency - Region 9Daniel Bergman / Pyrite Canyon Group, IncLtr: EPA response & comments on Achievement of performance standards rpt for hydraulic control component,community extraction system (community wells)88179037
10/16/1995Dante Rodriguez / Environmental Protection Agency - Region 9Daniel Bergman / Pyrite Canyon Group, IncLtr: Response to rpt re methods of measurement for achievement of performance standard - upgradient gw interception (dewatering), w/post-it & TL88179051
10/17/1995Dante Rodriguez / Environmental Protection Agency - Region 9Daniel Bergman / Pyrite Canyon Group, IncLtr: Followup to 9/13/95 mtg re zone 1 dewatering white paper, w/handwritten post-it88179004
10/18/1995Allan Topol / Stringfellow Steering CommitteePhillip Brooks / US Dept of Justice - Environmental Enforcement SectionLtr: Stringfellow Steering Committee agreeing to install piezometer wells (dewatering), w/TL to D Rodriguez fr P Brooks88179005
10/23/1995Daniel Bergman / Pyrite Canyon Group, IncDante Rodriguez / Environmental Protection Agency - Region 9Ltr: Installation of 2 shallow extraction wells in zone 1, 4 piezometers & 1 monitoring well at OW-6 (dewatering), w/maps88179006
10/24/1995 - -Mtg agenda: Tech mtg re construction work issues (dewatering, technical committee), w/post-it, schedule & copy w/handwritten notes88179046
10/26/1995Dante Rodriguez / Environmental Protection Agency - Region 9Daniel Bergman / Environmental Protection Agency - Region 9Ltr: Grants approval to proceed with additional dewatering work in zone 1 as outlined in 10/23/95 ltr88179034
11/1/1995Bechtel Environmental, IncPyrite Canyon Group, IncTechnical memorandum #1: Supplemental feasibility study (FS/ROD), w/TL to D Rodriguez fr D Bergman 11/30/9588177253
11/1/1995Dante Rodriguez / Environmental Protection Agency - Region 9 -Mtg notes: 10/25/95 technical committee mtg re dewatering88178967
12/1/1995John Kramer / Condor Earth Technologies, Inc -Memo: Soil moisture monitoring with neutron probe, w/handwritten post-its & article88177260
12/1/1995S S Papadopulos & Assoc, Inc -Addendum to zone 1 water mgt rpt - evaluation of future water-level changes (draft), w/PTP repair tasks chart & TL to N Lindsay fr S Larson 12/1/9588177262
12/8/1995Dante Rodriguez / Environmental Protection Agency - Region 9Kurt Berchtold / CA Regional Water Quality Control Board - Santa Ana Region
Daniel Bergman / Pyrite Canyon Group, Inc
Mark Katchen / ENVIRON Holdings, Inc - ENVIRON International Corp
Richard Bailey / CA Environmental Protection Agency - Dept of Toxic Substances Control
Memo: 12/19/95 technical committee mtg re FS & zone 1 dewatering/hydraulic control, w/agenda & attchs w/handwritten post-it88177220
12/14/1995Bill Albert / CA Environmental Protection Agency - Dept of Toxic Substances ControlStringfellow Advisory CommitteeLtr: Transmits agenda for 12/20/95 SAC mtg, 9/20/95 mtg minutes (draft) & 9/13/95 TAC mtg summary, w/attchs88177255
12/14/1995Daniel Bergman / Pyrite Canyon Group, IncDante Rodriguez / Environmental Protection Agency - Region 9Ltr: Transmits Supplemental health risk assessment zone 4, w/attch88177264
12/18/1995Dante Rodriguez / Environmental Protection Agency - Region 9 -SAC handouts re consent decree, statement of work (SOW), AOC, dewatering system & community extraction system88179007
12/20/1995 - -Technical memorandum #1 objectives (SAC mtg handout) (FS/ROD), w/handwritten notes88177250
1/17/1996 - -Technical memorandum #1 objectives (SAC mtg handout) (FS/ROD), w/handwritten notes88177251
1/17/1996Stringfellow Advisory Committee -Mtg agenda: SAC mtg re community relations & FS remedial action objectives (RAOs) (Redacted - FOIA ex 5)88179009
1/25/1996Paul Blais / CA Environmental Protection Agency - Dept of Toxic Substances ControlKeith Takata / Environmental Protection Agency - Region 9Ltr: DTSC conerns re EPA efforts to proceed with final FS (FS/ROD)88178992
1/25/1996Paul Blais / CA Environmental Protection Agency - Dept of Toxic Substances ControlKeith Takata / Environmental Protection Agency - Region 9Ltr: Issues & concerns for resolution during mtg re supplemental FS to develop 5th ROD (FS/ROD, CD/AOC, dewatering)88178991
1/26/1996 - -Mtg notes: SAC work group mtg revised feasibility study objectives (FS/ROD)88179002
2/1/1996Bechtel Environmental, Inc
S S Papadopulos & Assoc, Inc
Pyrite Canyon Group, IncCommunity extraction system interim operation - 6 month evaluation rpt #6, w/TL to D Rodriguez fr D Bergman 2/29/96 & encls88177168
2/1/1996S S Papadopulos & Assoc, IncPyrite Canyon Group, IncAchievement of performance standard community extraction system element of work, w/TL to D Rodriguez fr D Bergman 2/12/96 & encls88177180
2/8/1996Keith Takata / Environmental Protection Agency - Region 9Paul Blais / CA Environmental Protection Agency - Dept of Toxic Substances ControlLtr: Response to ltrs of 1/25/96 & summarizes 1/26/96 mtg re FS, 1992 consent decree (CD) & CD/FS relationship (FS/ROD, CD/AOC, dewatering), w/attach88177239
2/8/1996ChiYuan Fan / Environmental Protection Agency - Superfund Technology Demonstration DivDante Rodriguez / Environmental Protection Agency - Region 9Memo: Transmits EPA comments on DTSC's 3/1/95 review of Final soil vapor extraction (SVE) field test rpt, 11/94, w/attch88178978
2/15/1996Penny Newman / Concerned Neighbors in ActionKeith Takata / Environmental Protection Agency - Region 9Ltr: Community concerns re final remediation & FS process (Public, FS/ROD)88178993
2/27/1996Paul Blais / CA Environmental Protection Agency - Dept of Toxic Substances ControlKeith Takata / Environmental Protection Agency - Region 9Ltr: State's offer to complete FS (FS/ROD), w/attch & TL 2/28/9688177240
3/1/1996Bechtel Environmental, Inc
S S Papadopulos & Assoc, Inc
Pyrite Canyon Group, IncRoutine groundwater monitoring semi-annual rpt - Fall 1995, v1, w/TL to D Rodriguez fr D Bergman 4/10/86 & encls88177160
3/1/1996Bechtel Environmental, Inc
S S Papadopulos & Assoc, Inc
Pyrite Canyon Group, IncRoutine groundwater monitoring semi-annual rpt - Fall 1995, v2, w/encls88177161
3/1/1996Stan Smucker / Environmental Protection Agency - Region 9Dante Rodriguez / Environmental Protection Agency - Region 9Memo: Review of Supplemental health risk assessment, zone 4, 12/9588178980
3/18/1996John Stocker / Stringfellow Steering CommitteeKeith Takata / Environmental Protection Agency - Region 9Ltr: Concerns re DTSC's request to prepare Supplemental FS (FS/ROD)88177241
3/18/1996Penny Newman / Concerned Neighbors in ActionPaul Blais / CA Environmental Protection Agency - Dept of Toxic Substances ControlLtr: Issues to be addressed prior to community supporting DTSC role in conducting FS (FS/ROD, public), w/TL to K Takata fr P Blais 3/19/9688178994
3/19/1996John Tavaglione / Riverside County - Board of SupervisorsJohn Wise / Environmental Protection Agency - Region 9Ltr: County opposition to creation of state agency to manage site (FS/ROD, public)88178995
4/1/1996Pyrite Canyon Group, IncEnvironmental Protection Agency - Region 9Draft supplemental FS workplan (FS/ROD)88177280
4/3/1996John Tavaglione / Riverside County - Board of SupervisorsKeith Takata / Environmental Protection Agency - Region 9Ltr: Opposition to state proposed plan to create new agency for site (FS/ROD, public), w/envelope & TL to Takata, Lindsay, Blevins & Rodriguez 4/11/9688178996
4/7/1996Penny Newman / Concerned Neighbors in ActionKeith Takata / Environmental Protection Agency - Region 9Memo: 3/14/96 ltr fr D Bergman to J Tavaglione & request for clarification of EPA's position re site (FS/ROD, public), w/attch88178997
4/17/1996CA Environmental Protection Agency - Dept of Toxic Substances Control -Mtg agenda: SAC mtg re community relations & FS discussion, w/1/17/96 mtg minutes88179010
4/29/1996John Stocker / Rockwell International CorpJohn Wise / Environmental Protection Agency - Region 9Ltr: Transmits Preliminary eval of pumping fr well UW-6 & requests EPA to direct DTSC to stop pumping well UW-6 (dewatering, site maintenance),w/attch88177288
5/1/1996Bechtel Environmental, IncPyrite Canyon Group, IncZone 1 dewatering system 6-month evaluation rpt #3 (4/95 - 9/95), w/TL to D Rodriguez fr D Bergman 5/28/9688177263
5/1/1996S S Papadopulos & Assoc, IncPyrite Canyon Group, IncAchievement of performance standard bedrock hydraulic control component (dewatering), w/TL to D Rodriguez fr D Bergman 5/30/9688177285
5/1/1996S S Papadopulos & Assoc, IncPyrite Canyon Group, IncAchievement of performance standard upgradient interception component (dewatering), w/TL to D Rodriguez fr D Bergman 5/30/9688177286
5/7/1996William Ryan / CA Environmental Protection Agency - Dept of Toxic Substances ControlKeith Takata / Environmental Protection Agency - Region 9Ltr: Evaluation of UW-6 pump barrel (dewatering)88179052
5/8/1996John Stocker / Stringfellow Steering CommitteeJohn Wise / Environmental Protection Agency - Region 9Ltr: 4/17/96 status conference before Special Master Peetris & decision re who performs the supplementary FS (FS/ROD)88178998
5/8/1996Dante Rodriguez / Environmental Protection Agency - Region 9Daniel Bergman / Pyrite Canyon Group, IncLtr: Status of dewatering element of work, lowered water table component (dewatering)88179053
5/13/1996Paul Blais / CA Environmental Protection Agency - Dept of Toxic Substances ControlKeith Takata / Environmental Protection Agency - Region 9Ltr: Transmits Site stabilization & supplemental FS scope of work (draft) & implementation schedule (FS/ROD), w/attchs88177281
5/15/1996Richard Bailey / CA Environmental Protection Agency - Dept of Toxic Substances ControlDante Rodriguez / Environmental Protection Agency - Region 9Ltr: DTSC review of Achievement of performance standard, community extraction system (community wells)88179038
5/17/1996Jesse Huff / CA Environmental Protection Agency - Dept of Toxic Substances ControlKeith Takata / Environmental Protection Agency - Region 9Ltr: DTSC briefings & public workshop & transmits Site stabilization & supplemental FS scope of work (draft) (FS/ROD), 5/14/96, w/attchs88177282
5/17/1996Steve Larson / S S Papadopulos & Assoc, Inc
Bryce MacDonald / Stringfellow Steering Committee
Dante Rodriguez / Environmental Protection Agency - Region 9Memo: Request for Stringfellow Steering Committee to provide dewatering-related information, w/handwritten note88179054
5/20/1996John Stocker / Stringfellow Steering CommitteeJohn Wise / Environmental Protection Agency - Region 9Ltr: DTSC's involvement with site & completion of FS (FS/ROD), w/attchs88177242
5/21/1996Dante Rodriguez / Environmental Protection Agency - Region 9Daniel Bergman / Pyrite Canyon Group, IncLtr: Review of Supplemental health risk assessment, zone 4, 12/9588178981
5/22/1996Bob Borzelleri / CA Environmental Protection Agency - Dept of Toxic Substances ControlJohn Wise / Environmental Protection Agency - Region 9Ltr: Misrepresentations in J Stocker's 5/8/96 ltr & DTSC denial of allegations (FS/ROD)88178999
5/30/1996Paul Blais / CA Environmental Protection Agency - Dept of Toxic Substances ControlRichard Madsen / Rohr, IncLtr: 5/23/96 mtg followup, DTSC presentation for PCG, PCG/DTSC communication & PCG's comments on schedule & scope of work (FS/ROD), w/handwritten note88179000
5/30/1996Nick Johnson / C H 2 M Hill, IncDante Rodriguez / Environmental Protection Agency - Region 9Memo: Review of Achievement of performance standard, community extraction system (community wells), 2/9688179039
6/3/1996Nick Johnson / C H 2 M Hill, IncDante Rodriguez / Environmental Protection Agency - Region 9Memo: Addendum to review of Achievement of performance standard, community extraction system (community wells), 2/9688179040
6/5/1996Dante Rodriguez / Environmental Protection Agency - Region 9Daniel Bergman / Pyrite Canyon Group, IncMemo: Need additional data beyond existing zone 4 capture zone & DTSC to conduct work (community wells), w/handwritten note & TL header 6/6/9688179055
6/6/1996Dante Rodriguez / Environmental Protection Agency - Region 9Richard Bailey / CA Environmental Protection Agency - Dept of Toxic Substances ControlLtr: EPA review of Soil vapor extraction (SVE) field test rpt, w/attchs88177278
6/6/1996John Stocker / Rockwell International CorpDante Rodriguez / Environmental Protection Agency - Region 9Ltr: Request for approval of Achievement of performance standard rpt, community extraction system (community wells) & response to R Bailey ltr,w/attch88177289
6/7/1996John Stocker / Rockwell International CorpJohn Wise / Environmental Protection Agency - Region 9Ltr: Supplemental FS workshop (& DTSC withdrawal), SAC mtg (& DTSC cancellation) & transmits Supplemental FS workplan (draft) (FS/ROD), w/o attch88179043
6/13/1996Daniel Bergman / Pyrite Canyon Group, IncDante Rodriguez / Environmental Protection Agency - Region 9Ltr: Response to 5/17/96 request & transmits Documentation of calculation procedure used in 12/95 rpt (backup for 12/95 white paper addendum), w/attch88177261
6/14/1996Dante Rodriguez / Environmental Protection Agency - Region 9Daniel Bergman / Pyrite Canyon Group, IncLtr: Request for additional data re Achievement of performance standard, community extraction (community wells), 2/96, w/attch88179041
6/19/1996CA Environmental Protection Agency - Dept of Toxic Substances Control -Mtg agenda: SAC mtg re community relations, FS, zone 1, DTSC assuming PTP operation, zone 4 & DTSC organization, w/4/17/96 mtg minutes & attchs88177256
7/3/1996Dante Rodriguez / Environmental Protection Agency - Region 9 -Memo: 7/17/96 technical committee mtg re operation of pump barrel UW-6 & zone 4 DTSC investigations, w/agenda (draft) w/handwritten note88178968
7/23/1996Allen Wolfenden / CA Environmental Protection Agency - Dept of Toxic Substances Control-- Alexander / City of RiversideLtr: DTSC groundwater sampling results - well water contains tricholorethylene (TCE) & nitrate (community wells) (Redacted - FOIA ex 6)88179071
7/23/1996John Stocker / Rockwell International CorpJohn Wise / Environmental Protection Agency - Region 9Ltr: Papadopulos to prepare groundwater model for zone 1 (FS/ROD)88179044
7/25/1996Allen Wolfenden / CA Environmental Protection Agency - Dept of Toxic Substances ControlJohn Alexander / City of RiversideLtr: DTSC groundwater sampling results - well water contains tricholoroethylene (TCE) & nitrate (community wells) (Redacted - FOIA ex 6)88179072
7/30/1996Dante Rodriguez / Environmental Protection Agency - Region 9 -Summary of 7/17/96 technical mtg re monitoring & operation (technical committee)88179047
8/1/1996S S Papadopulos & Assoc, IncPyrite Canyon Group, IncAchievement of performance standard, community extraction system element of work, w/TL to D Rodriguez fr D Bergman 8/26/9688177274
8/1/1996U R S Consultants, IncCA Environmental Protection Agency - Dept of Toxic Substances ControlPhase 1 rpt - community extraction system design data collection & private well sampling, zone 4, Glen Avon community area, w/TL fr Wolfenden 8/19/9688177287
8/1/1996S S Papadopulos & Assoc, IncPyrite Canyon Group, IncWorkplan for additional investig & eval of gw in zone 4 areas S & SW of S community extraction well, w/TL to D Rodriguez fr D Bergman 8/26/9688177290
8/9/1996C H 2 M Hill, Inc -Review of Achievement of performance standard rpts for upgradient interception & bedrock hydraulic control (dewatering), w/TL to Rodriguez fr Miesner88177272
8/20/1996Dante Rodriguez / Environmental Protection Agency - Region 9Daniel Bergman / Pyrite Canyon Group, IncMemo: Invitation to 8/28/96 technical committee mtg re zone 4 data & progress of zone 1 dewatering review, w/agenda (draft)88179048
8/22/1996John Wise / Environmental Protection Agency - Region 9Jesse Huff / CA Environmental Protection Agency - Dept of Toxic Substances ControlLtr: Authorizes DTSC to assume responsibility for completion of FS if able to meet terms & conditions (FS/ROD), w/concurrence copy & TL 8/23/9688177283
8/26/1996Richard Bailey / CA Environmental Protection Agency - Dept of Toxic Substances ControlDante Rodriguez / Environmental Protection Agency - Region 9Ltr: Review & comments on Achievement of performance standard rpts for bedrock hydraulic control & upgradient interception (dewatering)88179035
8/26/1996John Stocker / Stringfellow Steering CommitteeDante Rodriguez / Environmental Protection Agency - Region 9Ltr: Transmits 2nd rev Achievement of performance standard rpt - hydraulic control & workplan for investigation & eval of gw, zone 4 (community wells)88179057
8/28/1996Stringfellow Advisory Committee -Mtg agenda: Stringfellow advisory committee (SAC) mtg re community relations, zone 1, suppl FS decision, zone 4 & PTP operation update, w/attchs88177279
8/29/1996Peter Lawson / C H 2 M Hill, IncDante Rodriguez / Environmental Protection Agency - Region 9Memo: Comments on Phase 1 rpt - community extraction system design data collection & well sampling, zone 4, Glen Avon area, 8/96 (community wells)88179058
8/30/1996Daniel Bergman / Pyrite Canyon Group, IncAllen Wolfenden / CA Environmental Protection Agency - Dept of Toxic Substances ControlLtr: Transmits Supplemental FS workplan (draft), 1/26/96 SAC work group mtg summary & 7/19/96 PCG ltr re workplan (FS/ROD), w/o attchs88179045
9/16/1996Dante Rodriguez / Environmental Protection Agency - Region 9 -Summary of 8/28/96 technical meeting re zone 4 & zone 1 issues (technical committee)88179049
9/18/1996Stringfellow Advisory Committee -Mtg agenda: Stringfellow advisory committee (SAC) mtg re community relations, zone 1, zone 4 & PTP operation update, w/attchs88179042
9/30/1996Dante Rodriguez / Environmental Protection Agency - Region 9File / NONEMemo: Purpose of Stringfellow technical committee & why mtg info included in administrative record88179073
9/30/1996Dante Rodriguez / Environmental Protection Agency - Region 9File / NONEMemo: Why Draft institutional failure analysis rpt of 8/94 included in site administrative record88179074
10/4/1996Environmental Protection Agency - Region 9 -List of US EPA guidance documents consulted during final ROD process88179075
- - -Technical data needs & collections, PRP technical committee88180026

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