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Pacific Southwest, Region 9: Superfund

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

Aerojet General Corp.

Superfund Site

Removal Action #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 activities appropriate to the Aerojet General Corporation Superfund Site, Removal Action #1, in Rancho Cordova, California. It is presented in Compact Disk (CD) format.

Please address questions on this administrative record to:

Kevin Mayer or: Jacqueline Lane
Remedial Project Manager Community Involvement Coordinator
U.S. EPA (SFD-7-2) U.S. EPA (SFD-3)
75 Hawthorne Street 75 Hawthorne Street
San Francisco, CA 94105-3901 San Francisco, CA 94105-3901
(415) 972-3176 (415) 972-3236 or (800) 231-3075

List of Abbreviations and Acronyms Used in Administrative Record Index

AbbreviationMeaning
#Number
&And
AerojetAerojet General Corporation
ARSAAmerican River Study Area
attch(s)Attachment(s)
CDConsent Decree
enclEnclosure
envEnvelope
EE/CAEngineering Evaluation/Cost Analysis
EPAEnvironmental Protection Agency
exExemption
FOIAFreedom of Information Act
FOUFSFocused Operable Unit Feasibility Study
FOWDFair Oaks Water District
ltrLetter
memoMemo
mtgMeeting
PRPPotentially Responsible Party
StateState of California
TLTransmittal Letter
w/With

Administrative Record Index

Doc_dateAuthorAddresseeTitle_subjectDocid
11/1/1990I C F Technology, IncAerojet General CorpAccelerated offsite investigation (AOI) workplan (revised)88085013
12/19/1990Hilary Lauer / Environmental Protection Agency - Region 9Cindy Caulk / Aerojet General CorpLtr: Comments on 11/90 revised accelerated offsite investigation (AOI) workplan88087830
9/1/1991I C F Technology, IncAerojet General CorpRevised scoping operable unit analysis (OUA)88085015
9/1/1991I C F Technology, IncAerojet General CorpRevised scoping operable unit analysis, appendices88085016
12/12/1991Hilary Lauer / Environmental Protection Agency - Region 9Cindy Caulk / Aerojet General CorpLtr: Transmits EPA & State agencies comments on 9/91 Revised Scoping Operable Unit Analysis (OUA) report w/encls88085029
1/31/1992Cindy Caulk / Aerojet General CorpHilary Lauer / Environmental Protection Agency - Region 9Ltr: Transmits American River focused operable unit feasibility study (FOUFS) workplan & schedule w/encl88085030
2/18/1992Robert Yeadon / CA Regional Water Quality Control Board - Central Valley RegionCindy Caulk / Aerojet General CorpLtr: Transmits conditions of approval for American River focused OU FS (FOUFS) workplan w/encl88087829
3/10/1992Cindy Caulk / Aerojet General CorpHilary Lauer / Environmental Protection Agency - Region 9
Robert Yeadon / CA Regional Water Quality Control Board - Central Valley Region
Raymond Leclerc / CA Environmental Protection Agency - Dept of Toxic Substances Control
Ltr: Provides Aerojet response to EPA & State comments in 2/18/92 approval of American River focused OU FS workplan & schedule88087831
11/25/1992Kathryn Lawrence / Environmental Protection Agency - Region 9Cindy Caulk / Aerojet General CorpLtr: Transmits comments on engineering evaluation & cost analysis (EE/CA) for American River study area w/encl88087832
2/25/1993Cindy Caulk / Aerojet General CorpKathryn Lawrence / Environmental Protection Agency - Region 9Ltr: Aerojet request for 90-day extension for submission of revised engineering evaluation & cost analysis (EE/CA) for American River study area88087833
3/10/1993Kathryn Lawrence / Environmental Protection Agency - Region 9
Robert Yeadon / CA Regional Water Quality Control Board - Central Valley Region
Raymond Leclerc / CA Environmental Protection Agency - Dept of Toxic Substances Control
Cindy Caulk / Aerojet General CorpLtr: Approves request for extension of time for submittal of revised EE/CA for American River study area, w/encl88087834
5/1/1993Aerojet General Corp-Engineering evaluation & cost analysis (EE/CA) for American River study area88085026
5/1/1993Aerojet General Corp-Engineering evaluation & cost analysis (EE/CA) for American River study area, appendices88085027
6/24/1993Environmental Protection Agency - Region 9-Selected guidance documents for removal action #188087828
6/28/1993Kathi Moore / Environmental Protection Agency - Region 9Cindy Caulk / Aerojet General CorpLtr: Transmits comments re engineering & cost analysis (EE/CA) for American River study area, w/encl88087835
7/1/1993Kathi Moore / Environmental Protection Agency - Region 9File / NONEMemo: Provides supporting documentation for groundwater extraction/treatment (GET) pump & cost assumptions for treatment technologies, re EE/CA88087836
7/7/1993Raymond Leclerc / CA Regional Water Quality Control Board - Central Valley Region
Robert Yeadon / CA Regional Water Quality Control Board - Central Valley Region
Cindy Caulk / Aerojet General CorpLtr: State agencies concur with Aerojet proposal & approves EE/CA for American River study area w/attch (State agency comments)88087838
7/8/1993Kathi Moore / Environmental Protection Agency - Region 9Jeff Zelikson / Environmental Protection Agency - Region 9Approval memo: Oversight costs for PRP-conducted non-time critical removal action88087837

Doc_dateAuthorAddresseeTitle_subjectDocid
7/21/1993Cindy Caulk / Aerojet General CorpKathi Moore / Environmental Protection Agency - Region 9Ltr: Transmits Aerojet comments re Engineering Evaluation & Cost Analysis (EE/CA) for American River study area, w/encls88085043
8/3/1993Roger McGinty / Carmichael Water DistrictDorothy Wilson / Environmental Protection Agency - Region 9Ltr: Requests that EPA hold formal public mtg on proposed Engineering Evaluation/Cost Analysis (EE/CA) & removal action88087842
8/13/1993Michael Remy / Remy & ThomasRaymond Leclerc / CA Environmental Protection Agency - Dept of Toxic Substances ControlLtr: Comments on behalf of FOWD re proposed negative declaration, w/encls (initial study checklist & proposed negative declaration)88085044
8/17/1993Roger McGinty / Carmichael Water DistrictJohn Wise / Environmental Protection Agency - Region 9Ltr: Comments on proposed removal action for American River study area88087843
9/1/1993Environmental Protection Agency - Region 9-Fact sheet: Public review & comment periods on engineering evaluation/cost analysis (EE/CA) & negative declaration are extended88087841
9/3/1993Resident / City of Fair OaksKathi Moore / Environmental Protection Agency - Region 9Ltr: (Redacted - FOIA ex 6) Comments on proposed removal action, w/env88087856
9/3/1993Resident / City of Fair OaksKathi Moore / Environmental Protection Agency - Region 9Ltr: (Redacted - FOIA ex 6) Comments on proposed removal action, w/env88087857
9/16/1993Roger McGinty / Carmichael Water DistrictJohn Wise / Environmental Protection Agency - Region 9Ltr: Additional comments on EE/CA & draft negative declaration & initial study prepared by State88087849
9/20/1993Michael Remy / Remy & ThomasRaymond Leclerc / CA Environmental Protection Agency - Dept of Toxic Substances Control
Kathi Moore / Environmental Protection Agency - Region 9
Ltr: Comments on behalf of FOWD on EE/CA & negative declaration, w/ltr fr Y Rubin to L Johnson 9/19/93 & w/o 8/13/93 comment ltr88085046
9/20/1993Nancy Lindsay / Environmental Protection Agency - Region 9Roger McGinty / Carmichael Water DistrictLtr: Response to comments on proposed removal action in 8/17/93 ltr to J Wise88087850
9/21/1993Kathi Moore / Environmental Protection Agency - Region 9Resident / City of Fair OaksLtr: (Redacted - FOIA ex 6) Response to 9/13/93 comments on proposed removal action88087862
10/8/1993Kathi Moore / Environmental Protection Agency - Region 9Linda Johnson / Fair Oaks Water DistrictLtr: Summarizes action items agreed upon during 9/28/93 Board of Directors mtg, w/o encls (Consent Decree & guide to CD)88087851
12/21/1993CA Regional Water Quality Control Board - Central Valley Region-Inspection rpt for 2 monitor wells on leading edge of chemical plume north of American River, w/TL fr R Yeadon to C Caulk 12/21/9388085070
1/27/1994Raymond Leclerc / CA Environmental Protection Agency - Dept of Toxic Substances ControlLinda Johnson / Fair Oaks Water DistrictLtr: Transmits draft contingency plan for Fair Oaks Water District (FOWD), w/encl88087852
2/14/1994Cindy Caulk / Aerojet General CorpKathi Moore / Environmental Protection Agency - Region 9Ltr: Concentrations of chemicals present in groundwater extraction88087855
4/4/1994Cindy Caulk / Aerojet General CorpKathi Moore / Environmental Protection Agency - Region 9Ltr: Aerojet proposes modification to Phase 1 RI/FS workplan to drill wells & perform aquifer tests in American River study area88087853
4/27/1994CA Regional Water Quality Control Board - Central Valley RegionAerojet General CorpRpt of recent inspection of monitor wells 1406-1409, 3/23/94 & 3/30/94, w/graphs of well data & TL fr R Yeadon to C Caulk88085071
5/20/1994Kerik Kouklis / Aerojet General CorpKathi Moore / Environmental Protection Agency - Region 9Ltr: Transmits support materials for response to comments on American River EE/CA, w/encls88085072
5/24/1994Cindy Caulk / Aerojet General CorpKathi Moore / Environmental Protection Agency - Region 9Ltr: Updated cost estimate for northside American River study area removal action88087854
6/17/1994C H 2 M Hill, IncEnvironmental Protection Agency - Region 9Groundwater capture zone analysis & modeling simulations rpt, American River study area88085074
6/27/1994Environmental Protection Agency - Region 9-Selected guidance documents for supplement #1 to removal action #188087858
6/28/1994James Tjosvold / CA Environmental Protection Agency - Dept of Toxic Substances ControlNancy Lindsay / Environmental Protection Agency - Region 9Ltr: Comments on draft action memo for removal action, American River study area88087861
6/30/1994Kathi Moore / Environmental Protection Agency - Region 9Jeff Zelikson / Environmental Protection Agency - Region 9Action memo: Request for removal action, w/attchs 1 & 2 (ARSA map & response summary), w/o attchs 3 & 4 (EE/CA & EE/CA approval) (Action memo signed)88085075
6/30/1994Thomas Pinkos / CA Regional Water Quality Control Board - Central Valley RegionNancy Lindsay / Environmental Protection Agency - Region 9Ltr: Comments on draft action memo for removal action, American River study area88087860
7/5/1994Aerojet General Corp-Modeling output figures 4-8 (upper, middle & lower aquifers)88087859

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