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Pacific Southwest, Region 9: Superfund

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

Lava Cap Mine

Superfund Site

Mine Area Operable Unit 01

Administrative Record Index

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

This administrative record contains the documents that the U.S. Environmental Protection Agency (EPA) has considered or relied on to select remedial actions for the Mine Area Operable Unit (OU-01) at the Lava Cap Mine Superfund Site in Nevada City, California. It is presented in two media: the Compact Disk (CD) and a companion binder of large format documents. The administrative record includes the administrative record file for the Mine Area Operable Unit that was released for public review and comment in February 2004 and supplement #1, compiled and issued by EPA in January 2005.
EPA welcomes questions and comments on documents contained in the administrative record file. Please contact:

David Seter
Remedial Project Manager
U.S. EPA (SFD-7-2)
75 Hawthorne Street
San Francisco, CA 94105-3901
(415) 972-3250

or:

Don Hodge
Community Involvement Coordinator
U.S. EPA (SFD-3)
75 Hawthorne Street
San Francisco, CA 94105-3901
(415) 972-3240 or 1-800-231-3075

List of Abbreviations and Acronyms Used in Administrative Record Index

ABBREVIATIONMEANING
appAppendix
appsAppendices
ARAR Applicable or Relevant and Appropriate Restriction (or Requirement)
AsArsenic
attchAttachment
attchsAttachments
CERCLA Comprehensive Environmental Response, Compensation, and Liability Act of 1980
CIPCommunity Involvement Plan
CTRCalifornia Toxics Rule
DeptDepartment
doc Document
DTSCCA Environmental Protection Agency - Department of Toxic Substances Control
EE/CAEngineering Evaluation/Cost Analysis
EIREnvironmental Impact Report
enclEnclosure
envEnvelope
EPAEnvironmental Protection Agency
exExemption
exh Exhibit
FOIAFreedom of Information Act
fr From
FS Feasibility Study
HHRAHuman Health Risk Assessment
info Information
ltr Letter
memo Memorandum
mtgMeeting
NPDES National Pollutant Discharge Elimination System
NPLNational Priorities List
OEHHACA Environmental Protection Agency - Office of Environmental Health Hazard Assessment
OU Operable unit
p Page
pp Pages
PRP Potential Responsible Party
RARemedial Action
RCRA Resource Conservation and Recovery Act
RdRoad
re Regarding
ref Referencing
RI Remedial Investigation
RI/FSRemedial Investigation/Feasibility Study
ROCRecord of Communication
rpt Report
rptsReports
TAGTechnical Assistance Grant
TDSTotal Dissolved Solids
TL Transmittal letter
TRIToxic Release Inventory
v Volume
w/ With
w/o Without

Administrative Record Index

Doc. DateAuthor / Author Org.Addressee / Addressee Org.Title / SubjectDoc. ID
09/27/1979Jack Del Conte / CA Regional Water Quality Control Board - Central Valley RegionTracy Hudgins
Ruth Flax
Keystone Copper Corp
Ltr: Transmits complaint of discharge fr site & requests engineering rpt on same, w/encl88217841
10/25/1979James Robertson / CA Regional Water Quality Control Board - Central Valley RegionTracy Hudgins
Ruth Flax
Keystone Copper Corp
Cleanup & abatement order for Keystone Copper Corp, R Flax & T Hudgins w/attch & TL fr J Robertson88217740
01/01/1985Western Ecological Services Co
AguaTierra Assoc, Inc
Cole/Mills Assoc
Nevada County, AZ - Planning DeptFinal EIR for rezoning & use permit application of Franco-Nevada Mining Corp, v1 of 3, w/apps A-F & TL to M Myers fr DTSC88217817
01/01/1985Cranmer Engineering, Inc
CA Regional Water Quality Control Board - Central Valley Region
CA Regional Water Quality Control Board - Central Valley Region
Nevada County, AZ - Planning Dept
Supporting docs for final EIR for rezoning & use permit application, including cleanup & abatement order & correspondence, v2 of 3, w/TL to M Myers88217818
01/01/1985Vector Engineering, Inc
CA Regional Water Quality Control Board - Central Valley Region
CA Environmental Protection Agency - Dept of Toxic Substances Control
CA Regional Water Quality Control Board - Central Valley Region
Nevada County, AZ - Planning Dept
Steve Elder / Banner Mountain Properties
Supporting docs for final EIR for rezoning & use permit application, including preliminary endangerment assessment & correspondence, v3 of 3, w/TL88217819
06/01/1985George Holmes / Franco-Nevada Mining Corp-Banner Lava Cap Gold project2003219
08/01/1995Tom Jenolio / Bechtel Environmental, Inc
Roy Woodward / Bechtel Environmental, Inc
-Survey for CA red-legged frog at site & contact rpt 11/20/952003220
05/08/1997John Hiscox / CA Dept of Fish & GameDan Ziarkowski / CA Environmental Protection Agency - Dept of Toxic Substances ControlLtr: Observations fr site visit 5/7/97 re damage to fish & wildlife88217842
06/11/1997Jim Willis / Union, The (Newspaper)-Newsclip: State - tailings spill leaves creek lifeless, w/TL to K Lawrence fr D Ziarkowski88217876
07/27/1997CA Environmental Protection Agency - Dept of Toxic Substances Control-Laboratory analysis rpts, soil, water & sediment samples for inorganics, collected 1/31/97 - 7/8/97 w/site map88217743
08/29/1997John Bender, Resident / City of Grass Valley
Pearl Bender, Resident / City of Grass Valley
CA Regional Water Quality Control Board - Central Valley RegionLtr: Urges action for cleanup of toxic conditions at site, w/handwritten note88217877
09/09/1997Tim Willis / Union, The (Newspaper)-Newsclip: Cleanup of mine waste costly & complicated88217846
09/10/1997Tim Willis / Union, The (Newspaper)-Newsclip: Pollution prompts "nasty-gram"88217847
10/01/1997Environmental Protection Agency - Region 9-Fact Sheet: US EPA to conduct removal action88217849
10/05/1998CA Environmental Protection Agency - Dept of Toxic Substances Control-Results of water & soil sampling, collected by Dan Ziarkowski, (1/31/97 - 9/2/98), w/handwritten notes & attchs88217782
03/01/1999--Mtg Agenda & Notes: Town Forum, Peter Van Zant, Madelyn Helling Library, w/attch118535
03/17/1999--Site rpt for state of CA - population summary & drinking water wells118491
03/17/1999--Site rpt for State of CA - Superfund NPL, RCRA sites, CERCLA sites, National Pollution Discharge Elimination System (NPDES) Facilities, underground storage tanks, & Toxic Release Inventory (TRI)118493
03/22/1999Michael Brenner, Resident / City of Nevada CityMichelle Schutz / Environmental Protection Agency - Region 9
Catherine McCracken / Environmental Protection Agency - Region 9
Email: Concerns re use of Lava Cap Mine Road as access road & suggests use of Loma Rica Road, w/marginalia118468
03/22/1999Michael Brenner, Resident / City of Nevada CityMichelle Schutz / Environmental Protection Agency - Region 9
Catherine McCracken / Environmental Protection Agency - Region 9
Ltr: Concerns re use of Lava Cap Mine Road as access road & suggests use of Loma Rica Road118485
03/29/1999Environmental Protection Agency - Region 9-Excerpt: Community involvement plan (CIP), community concerns portion, w/TL to D Sokolove fr C McCracken118465
06/17/1999Will Doleman / A Call for Water Sanity! Monitoring GroupMichelle Schutz / Environmental Protection Agency - Region 9Ltr: Concerns re man-made chemicals used to remove arsenic fr river, w/env & attch118312
06/21/1999Carolyn Douglas / Environmental Protection Agency - Region 9-Remedial site assessment decision88217861
09/01/1999Environmental Protection Agency - Region 9-Community involvement plan88217813
09/01/1999C H 2 M HillEnvironmental Protection Agency - Region 9Field sampling plan for RI/FS88217754
09/01/1999C H 2 M HillEnvironmental Protection Agency - Region 9Quality assurance project plan for RI/FS88217761
09/30/1999Environmental Protection Agency - Region 9Union, The (Newspaper)Public Notice: Technical assistance grant available for Lava Cap Mine88217855
10/27/1999John Livingston / C H 2 M HillDavid Towell / C H 2 M HillTechnical Memo: Evaluation of Timber Crib dam & Lost Lake dam site RI2003221
01/01/2000Environmental Protection Agency - Region 9-Public Notice: Meeting to present results of environmental investigation88217863
01/29/2000Will Doleman / A Call for Water Sanity! Monitoring GroupUnion, The (Newspaper)Newsclip: Ltr to the editor re EPA & levels of arsenic in water at Lava Cap, w/TL to M Schutz, D Seter, & C McCracken fr D Towell 8/20/00117639
02/04/2000Environmental Protection Agency - Region 9Union, The (Newspaper)Public Notice: Technical assistance grant for Lava Cap Mine88217844
07/03/2000James Tjosvold / CA Environmental Protection Agency - Dept of Toxic Substances ControlRobert Erdmann / Robert Erdmann (Attorney)Ltr: Termination of site voluntary cleanup agreement, docket #HSA 96-97-0252003223
09/01/2000Environmental Protection Agency - Region 9-Fact Sheet: Studies indicate arsenic is primary concern at site88217862
11/14/2000Tim Omarzu / Union, The (Newspaper)-Newsclip: Feds - arsenic level in wells not unususal88217858
01/11/2001David Towell / C H 2 M HillDavid Seter / Environmental Protection Agency - Region 9
Dave Bunte / C H 2 M Hill
John Spitzley / C H 2 M Hill
Mtg Notes: 12/18/00 meeting - FS scoping & additional data collection activities2003213
01/16/2001Dave Bunte / C H 2 M HillDavid Towell / C H 2 M HillMemo: Preliminary assembly of alternatives for tailings2003212
01/17/2001Dave Bunte / C H 2 M HillDavid Towell / C H 2 M HillEmail: Additions to meeting summary & additional items for labor estimate for FS2003214
05/01/2001I T CorpEnvironmental Protection Agency - Region 9
US Army Corps of Engineers - Ft Crook Area Office
Engineering evaluation/cost analysis rpt (EE/CA), w/attached EPA comments & TL to W Shaheen fr J Sloss 5/22/01117334
05/03/2001US Dept of Health & Human Services - Agency for Toxic Substances & Disease Registry-Public health assessment, evaluation of off-site contamination140288
05/04/2001David Seter / Environmental Protection Agency - Region 9Steven Ross / CA Environmental Protection Agency - Dept of Toxic Substances ControlLtr: Request for ARARs88217881
05/17/2001David Seter / Environmental Protection Agency - Region 9Patricia Port / US Dept of the Interior - San FranciscoLtr: Federal & state natural resource trustee notification - EPA performing RI/FS at site, Nevada City, CA117479
05/18/2001John Livingston / C H 2 M HillDavid Towell / C H 2 M HillTechnical Memo: Jurisdictional evaluation of Timber Crib dam & Lost Lake dam2003222
06/12/2001Steven Ross / CA Environmental Protection Agency - Dept of Toxic Substances ControlDavid Seter / Environmental Protection Agency - Region 9Ltr: State natural resource trustee notification88217882
06/26/2001Banky Curtis / CA Dept of Fish & GameDavid Seter / Environmental Protection Agency - Region 9Ltr: Re RI/FS, transmits Dept of Fish & Game resource concerns & recommended mine site stabilization to prevent downstream degradation & promote habitat recovery, w/attch117480
07/01/2001C H 2 M HillEnvironmental Protection Agency - Region 9Workplan for site treatability study88217739
07/02/2001Steven Ross / CA Environmental Protection Agency - Dept of Toxic Substances ControlDavid Seter / Environmental Protection Agency - Region 9Ltr: Transmits initial DTSC review comments on draft human health risk assessment rpt, w/attch117514
07/06/2001Dave Bunte / C H 2 M Hill
David Towell / C H 2 M Hill
Andy Cramer / C H 2 M Hill
David Seter / Environmental Protection Agency - Region 9Technical Memo: Preliminary development of alternatives for FS2003215
07/31/2001David Seter / Environmental Protection Agency - Region 9Wayne White / US Dept of the Interior - Fish & Wildlife ServiceLtr: Inquiry re US Fish & Wildlife Service's potential interest in site, w/o fact sheet88217883
08/22/2001Darrel Lauren / CA Dept of Health Services - Toxic Substances Control DivSteven Ross / CA Environmental Protection Agency - Dept of Toxic Substances ControlMemo: Baseline ecological risk assessment & review of final draft ecological risk assessment, w/marginalia & attch117484
08/23/2001Karen DiBiasio / CA Dept of Health Services - Toxic Substances Control DivSteven Ross / CA Environmental Protection Agency - Dept of Toxic Substances ControlMemo: State review comments on human health risk assessment (HHRA)117510
09/05/2001Steven Ross / CA Environmental Protection Agency - Dept of Toxic Substances ControlDavid Seter / Environmental Protection Agency - Region 9Memo: Transmits DTSC review comments on draft human health risk assessment (HHRA) & final draft ecological risk assessment rpts, w/attch117513
10/05/2001David Seter / Environmental Protection Agency - Region 9Fred Lee / G Fred Lee & AssocLtr: EPA response to comments on technical assistance grant (TAG)118732
11/01/2001Environmental Protection Agency - Region 9-Fact Sheet: EPA studies cleanup options, seeks public input88217885
11/01/2001C H 2 M HillEnvironmental Protection Agency - Region 9Field monitoring rpt for RI/FS, field activities 8/01 - 11/01, w/apps A-1 & 2 (replacement pages) & attchs118826
11/01/2001C H 2 M HillEnvironmental Protection Agency - Region 9Field monitoring rpt, quarterly monitoring activities 8/02, w/apps A-1, A-2 & B & TL to D Seter fr D Towell 3/3/03138090
11/01/2001C H 2 M HillEnvironmental Protection Agency - Region 9RI rpt, draft, v2 of 288217824
11/01/2001C H 2 M HillEnvironmental Protection Agency - Region 9RI rpt, draft, w/TL to D Seter fr D Towell 11/2/01, v1 of 2 (oversize maps only)140201
11/01/2001C H 2 M HillEnvironmental Protection Agency - Region 9RI rpt, draft, w/TL to D Seter fr D Towell 11/2/01, w/o oversize maps, v1 of 288217823
11/07/2001Environmental Protection Agency - Region 9Union, The (Newspaper)Public Notice: EPA seeks public input on Lava Cap Mine cleanup118110
11/13/2001Tim Omarzu / Union, The (Newspaper)-Newsclip: Meetings slated to review Lava Cap Mine cleanup88217886
11/14/2001Tim Omarzu / Union, The (Newspaper)-Newsclip: Cancer risk from tailings small88217887
11/14/2001Environmental Protection Agency - Region 9-Overheads: Powerpoint presentation - risk assessment summary & remedial alternative development, community meetings, 11/13/01-11/14/01117652
12/06/2001Janet Cohen / South Yuba River Citizens LeagueDavid Seter / Environmental Protection Agency - Region 9Ltr: Expresses thanks for mtgs in Grass Valley & Nevada City & comments on mtg issues88217888
01/09/2002David Seter / Environmental Protection Agency - Region 9Janet Cohen / South Yuba River Citizens LeagueLtr: Response to 12/6/01 ltr & comments on monitoring of groundwater wells88217889
03/19/2002Robert Busby / CA Regional Water Quality Control Board - Central Valley RegionSteven Ross / CA Environmental Protection Agency - Dept of Toxic Substances ControlMemo: Review of ARARs, w/attch2003227
04/01/2002C H 2 M HillEnvironmental Protection Agency - Region 9Technical Memo: Treatability study rpt, w/attch118825
04/01/2002C H 2 M HillEnvironmental Protection Agency - Region 9Technical Memo: Treatability study rpt, w/attch & TL to D Seter fr D Towell 4/5/022003216
07/22/2002Tom Lae / C H 2 M HillDavid Towell / C H 2 M HillEmail: Transmits digital photos fr sign installation at site, w/forward to D Seter & attchs (IMG_0213.JPG, IMG_0214.JPG, IMG_0219.JPG, IMG_0220.JPG, IMG_0222.JPG)2003224
08/08/2002David Seter / Environmental Protection Agency - Region 9Janet Cohen / South Yuba River Citizens LeagueLtr: EPA response to technical advisor's comments, w/o attchs118726
08/22/2002David Seter / Environmental Protection Agency - Region 9Steven Ross / CA Environmental Protection Agency - Dept of Toxic Substances ControlLtr: EPA response to DTSC comments re site118789
09/30/2002C H 2 M HillEnvironmental Protection Agency - Region 9Field monitoring rpt, quarterly monitoring activities, 2/02 & 5/02, w/TL to D Seter fr D Towell 10/2/02122055
11/01/2002Environmental Protection Agency - Region 9-Fact Sheet: Arsenic in well water, what you should know140246
12/10/2002Don Hodge / Environmental Protection Agency - Region 9-Mtg Agenda: Public FS workshops, 12/10 - agenda, & handouts, w/attchs130329
01/01/2003C H 2 M HillEnvironmental Protection Agency - Region 9Background approach & comparison of site water quality data to CTR criteria2003217
01/06/2003Fred Lee / G Fred Lee & AssocJanet Cohen / South Yuba River Citizens LeagueLtr: Follow up to EPA meeting on remediation approaches for site Lost Lake area2003225
01/07/2003Fred Lee / G Fred Lee & AssocJanet Cohen / South Yuba River Citizens LeagueLtr: Comments on 8/8/02 EPA response to comments re issues pertinent to investigation & remediation of site, w/o encls2003226
01/16/2003Robert Busby / CA Regional Water Quality Control Board - Central Valley RegionSteven Ross / CA Environmental Protection Agency - Dept of Toxic Substances ControlMemo: Transmits mining regulations, title 27, w/attch2003228
04/02/2003David Seter / Environmental Protection Agency - Region 9Daniel Meer / Environmental Protection Agency - Region 9Action Memo: Request for removal action, w/o enforcement confidential addendum (00 Removal Start 002)140568
04/04/2003Richard McHenry / CA Regional Water Quality Control Board - Central Valley RegionDavid Seter / Environmental Protection Agency - Region 9Email: Response to questions re site surface water discharge ARARs, w/history2003229
04/11/2003Fred Lee / G Fred Lee & AssocDavid Seter / Environmental Protection Agency - Region 9Ltr: Comments on ARAR meeting issues re site remediation (seter4-7-03T.doc), w/email TL2003230
06/01/2003C H 2 M HillEnvironmental Protection Agency - Region 9Field monitoring rpt, quarterly monitoring activities 11/02, w/apps A-1, A-2 & B & TL to D Seter fr D Towell 6/7/03160134
07/23/2003Fred Lee / G Fred Lee & AssocDavid Seter / Environmental Protection Agency - Region 9Email: Comments on CH2M Hill preliminary remediation goals rpt2003231
08/21/2003Sara Goldsmith / Environmental Protection Agency - Region 9Steven Ross / CA Environmental Protection Agency - Dept of Toxic Substances Control
Derek Wong / CA Environmental Protection Agency - Dept of Toxic Substances Control
Ltr: Potential applicable or relevant & appropriate regulations (ARARs), w/attch160080
10/01/2003C H 2 M HillEnvironmental Protection Agency - Region 9Draft addendum #4 to field sampling plan for RI/FS2003235
11/01/2003C H 2 M HillEnvironmental Protection Agency - Region 9Field monitoring rpt, quarterly monitoring activities 2/03 & 5/03, w/apps A1a, A1b, A2 & B & TL to D Seter fr D Towell 11/14/032003218
11/14/2003Fred Lee / G Fred Lee & AssocEnvironmental Protection Agency - Region 9Review of draft mine area FS (LavaCapFS-comments.pdf), w/email TL to D Seter fr J Cohen 11/25/032003232
11/25/2003Steven Ross / CA Environmental Protection Agency - Dept of Toxic Substances ControlDavid Seter / Environmental Protection Agency - Region 9Ltr: Review & comments on draft mine area FS, w/attch (draftfsmineoudraft.doc), w/email TL to D Seter & F Lee fr S Ross2003233
12/01/2003David Seter / Environmental Protection Agency - Region 9David Towell / C H 2 M HillLtr: EPA comments on draft mine area FS2003234
02/01/2004Environmental Protection Agency - Region 9-Fact Sheet: Proposed plan for Mine Area operable unit2006459
02/01/2004C H 2 M HillEnvironmental Protection Agency - Region 9Mine area FS, public release draft, w/apps A-H & TL to D Seter fr D Towell 2/6/042006460
02/05/2004Environmental Protection Agency - Region 9-Compendium of CERCLA guidance documents for Lava Cap, Mine Area Operable Unit (OU-1) Administrative Record2006457
02/11/2004Environmental Protection Agency - Region 9-Public Notice: EPA announces public comment period on proposed plan for site, w/TL2006461
02/17/2004Debra Bernbeck, resident / City of Grass Valley
Volkert Bernbeck, resident / City of Grass Valley
David Seter / Environmental Protection Agency - Region 9Email: Comments on preferred alternative2035270
02/18/2004William Walker / Walker & Assoc, Inc
Genevieve Field-Ridley / Walker & Assoc, Inc
David Seter / Environmental Protection Agency - Region 9Email: Offer to provide information re removal of As in surface water2035269
02/18/2004Union, The (Newspaper)-Newsclip: Public Notice - EPA seeks public comment on proposed cleanup plan for Mine Area of site2050201
02/26/2004Robert ShoemakerDavid Seter / Environmental Protection Agency - Region 9Ltr: Questions EPA conclusion that site poses threat to human & ecological health, w/email TL 2/27/20042035272
02/26/2004Environmental Protection Agency - Region 9-Meeting Minutes: Transcript of 2/26/2004 public hearing on proposed cleanup plan2035282
02/27/2004Jerry Grant
Corrine Gelfan
David Seter / Environmental Protection Agency - Region 9Email: Expresses interest in toxic level in Lost Lake & requests surface water test results2035271
02/29/2004Volkert Bernbeck, resident / City of Grass Valley
Debra Bernbeck, resident / City of Grass Valley
Don Hodge / Environmental Protection Agency - Region 9Email: Comments on preferred alternatives 2-3 & 3-4 & cleanup of Lost Lake2035273
03/08/2004Joan Dyer, resident / City of Grass Valley
James Dyer, resident / City of Grass Valley
David Seter / Environmental Protection Agency - Region 9
Don Hodge / Environmental Protection Agency - Region 9
Ltr: Supports alternative 3-4, w/email TL2035274
03/09/2004Robert Busby / CA Regional Water Quality Control Board - Central Valley RegionDavid Seter / Environmental Protection Agency - Region 9Ltr: Comments on 2/2004 proposed cleanup plan for Mine OU (OU-1)2035275
03/10/2004Fred Lee / G Fred Lee & Assoc-Comments on 2/2004 proposed cleanup plan for Mine Area OU2035276
03/11/2004Mary Devincenzi, resident / City of Grass ValleyDavid Seter / Environmental Protection Agency - Region 9ROC: Comments on proposed cleanup plan for Mine Area OU2035277
03/19/2004Robert Parvin, resident / City of Grass ValleyDavid Seter / Environmental Protection Agency - Region 9ROC: Comments on proposed cleanup plan for Mine Area OU2035278
03/23/2004Michael Miller, resident / City of AlleghanyDon Hodge / Environmental Protection Agency - Region 9Ltr: Comments in response to public meeting on 2/26/2004, w/email TL2035279
03/23/2004Greenhorn Road Assn
Will Doleman / A Call for Water Sanity! Monitoring Group
Don Hodge / Environmental Protection Agency - Region 9Ltr: Comments on proposed cleanup of site, w/attchs & marginalia2035280
03/24/2004Steven Ross / CA Environmental Protection Agency - Dept of Toxic Substances ControlDavid Seter / Environmental Protection Agency - Region 9Ltr: Comments on preferred alternative for proposed cleanup plan for Mine OU, w/attch A & tables, w/o attch B2035281
09/28/2004Environmental Protection Agency - Region 9-Record of Decision (ROD), mine area OU (01 ROD 001)2037653

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