lava cap mine mine area operable unit (ou-1) administrative … · 2020-07-03 · lava cap mine...

Lava Cap Mine Superfund Site

Mine Area Operable Unit (OU-1) Administrative Record

Index

First Released: 02/12/2004 Updated: 11/17/2014

SEMS-RM DOCID # 1161354

About the Administrative Record 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 compact disc (CD) format. The administrative record includes the cumulative administrative record files for the Mine Area Operable Unit that were released for public review and comment in February 2004 and subsequently updated in January 2005 (as Update #1) and November 2014 (as Update #2). EPA welcomes questions and comments on documents contained in the administrative record file. Please contact:

Bruni Davila or: Amanda Pease Remedial Project Manager Community Involvement Coordinator U.S. EPA (SFD-7-2) U.S. EPA (SFD 6-3) 75 Hawthorne Street 75 Hawthorne Street San Francisco, CA 94105-3972 San Francisco, CA 94105-3972 (415) 972-3162 (415) 972-3068

[email protected] [email protected] What is an Administrative Record?

An administrative record is a collection of documents which forms the basis for an agency's decision, in this case the selection of a response action at a Superfund site. This does not mean that only documents which support a response decision are placed in the administrative record. Relevant documents that were relied upon in selecting the response action, as well as relevantdocuments that were considered but ultimately rejected, are included. The administrative record also acts as a vehicle for public participation in selecting a response action. Under section 113(K) of the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA), as amended by the Superfund Amendments and Reauthorization Act (SARA), the U.S. Environmental Protection Agency (EPA) is required to establish an administrative record for every Superfund response action and to make a copy of the administrative record available at or near the site. The administrative record must be reasonably available for public review during normal business hours and should be treated as a non-circulating reference document. Questions regarding the maintenance of the administrative record file should be directed to: Elaine Chan, Administrative Record Coordinator, U.S. EPA (SFD-7-5), 75 Hawthorne Street, San Francisco, CA 94105-3920, Phone: (415) 972-3128 How to obtain copies of administrative record documents:

Individuals may copy any documents contained in the administrative record file according to the procedures at the local repository or request a copy of the CD by calling the Superfund Records Center at (415) 820-4700.

mailto:[email protected]

mailto:[email protected]

Lava Cap Mine Superfund Site


Acronyms and Abbreviations

ABBREVIATION MEANING

App Appendix Apps Appendices

ARAR Applicable or Relevant and Appropriate Restriction (or Requirement)

As Arsenic Attch Attachment

Attchs Attachments CERCLA Comprehensive Environmental Response, Compensation and

Liability Act of 1980 CIP Community Involvement Plan

CTR California Toxics Rule Dept Department Doc Document

DTSC CA Environmental Protection Agency – Department of Toxic Substances Control

EE/CA Engineering Evaluation/Cost Analysis EIR Environmental Impact Report Encl Enclosure Env Envelope

EPA Environmental Protection Agency ESD Explanation of Significant Differences

Ex Exemption Exh Exhibit

FOIA Freedom of Information Act Fr From FS Feasibility Study

HHRA Human Health Risk Assessment Info Information

IROD Interim Record of Decision Memo Memorandum

Mtg Meeting NPDES National Pollutant Discharge Elimination System

NPL National Priorities List OEHHA CA Environmental Protection Agency – Office of

Environmental Health Hazard Assessment OU Operable Unit

P Page PRP Potentially Responsible Party RA Remedial Action

RCRA Resource Conservation and Recovery Act RD Road RE Regarding

REF Referencing

RI Remedial Investigation RI/FS Remedial Investigation/Feasibility Study ROC Record of Communication ROD Record of Decision

Rpt Report Rpts Reports TAG Technical Assistance Grant

TL Transmittal Letter TDS Total Dissolved Inventory

V Volume w/ With

w/o Without

This administrative record is available for viewing at the Superfund Records Center in San Francisco, the Nevada County Public Library (Madelyn Helling Branch), 980 Helling Way, Nevada City, California, 95959, and the Grass Valley Public Library, 207 Mill Street, Grass Valley, California, 95945.

Lava Cap Mine

Superfund Site


First Released 02-12-2004; Updated 11-17-2014

Final Index

in CHRONOLOGICAL order

Document ID Document Date Title Author Addressee

88217841 9/27/1979Ltr: Transmits complaint of discharge fr site &

requests engineering rpt on same, w/encl

R09: Del Conte, Jack (CA Regional Water

Quality Control Board - Central Valley

Region)

R09: Flax, Resident, Ruth (City of Nevada

City), R09: Hudgins, Resident, Tracy (City

of Nevada City), R09: (Keystone Copper

Corp)

88217740 10/25/1979

Cleanup & abatement order for Keystone

Copper Corp, R Flax & T Hudgins w/attch & TL

fr J Robertson

R09: Robertson, James (CA Regional Water


Region)

R09: Flax, Resident, Ruth (City of Nevada

City), R09: Hudgins, Resident, Tracy (City

of Nevada City), R09: (Keystone Copper

Corp)

88217817 1/1/1985

Final EIR for rezoning & use permit application

of Franco-Nevada Mining Corp, v1 of 3,

w/apps A-F & TL to M Myers fr DTSC

R09: (Cole/Mills Assoc), R09: (AguaTierra

Assoc, Inc), R09: (Western Ecological

Services Co)

R09: (Nevada County - Planning Dept)

88217818 1/1/1985

Supporting docs for final EIR for rezoning &

use permit application, including cleanup &

abatement order & correspondence, v2 of 3,

w/TL to M Myers

R09: (CA Regional Water Quality Control

Board - Central Valley Region), R09:

(Cranmer Engineering, Inc)


Board - Central Valley Region), R09:

(Nevada County - Planning Dept)

88217819 1/1/1985

Supporting docs for final EIR for rezoning &

use permit application, including preliminary

endangerment assessment & correspondence,

v3 of 3, w/TL


Board - Central Valley Region), R09: (CA

Environmental Protection Agency - Dept of

Toxic Substances Control), R09: (Vector

Engineering, Inc)

R09: Elder, Stephen (Banner Mountain

Properties, Ltd), R09: (CA Regional Water


Region), R09: (Nevada County - Planning

Dept)

2003219 6/1/1985 Banner Lava Cap Gold projectR09: Holmes, George (Franco-Nevada

Mining Corp)

2003220 8/1/1995Survey for CA red-legged frog at site & contact

rpt 11/20/95

R09: Woodward, Roy (Bechtel

Environmental, Inc), R09: Jenolio, Tom

(Bechtel Environmental, Inc)

88217842 5/8/1997Ltr: Observations fr site visit 5/7/97 re damage

to fish & wildlife

R09: Hiscox, John (CA Dept of Fish &

Game)

R09: Ziarkowski, Dan (CA Environmental

Protection Agency - Dept of Toxic

Substances Control)

88217876 6/11/1997Newsclip: State - tailings spill leaves creek

lifeless, w/TL to K Lawrence fr D ZiarkowskiR09: Willis, Jim (Union, The (Newspaper))

Page 1 of 10

Lava Cap Mine

Superfund Site



Final Index



88217743 7/27/1997

Laboratory analysis rpts, soil, water &

sediment samples for inorganics, collected

1/31/97 - 7/8/97 w/site map

R09: (CA Environmental Protection Agency

- Dept of Toxic Substances Control)

201131 8/29/1997

(Redacted, FOIA Ex 6) Ltr: Urges action for

cleanup of toxic conditions at site,

w/handwritten note

R09: Bender, Resident, John (City of Grass

Valley), R09: Bender, Resident, Pearl (City

of Grass Valley)


Board - Central Valley Region)

88217846 9/9/1997Newsclip: Cleanup of mine waste costly &

complicatedR09: Willis, Tim (Union, The (Newspaper))

88217847 9/10/1997 Newsclip: Pollution prompts "nasty-gram" R09: Willis, Tim (Union, The (Newspaper))

88217849 10/1/1997 Fact Sheet: US EPA to conduct removal actionR09: (Environmental Protection Agency -

Region 9)

88217782 10/5/1998

Results of water & soil sampling, collected by

Dan Ziarkowski, (1/31/97 - 9/2/98),

w/handwritten notes & attchs

R09: (CA Environmental Protection Agency

- Dept of Toxic Substances Control)

118535 3/1/1999Mtg Agenda & Notes: Town Forum, Peter Van

Zant, Madelyn Helling Library, w/attch

1161338 3/17/1999

(Privileged) Site rpt for state of CA - population

summary & drinking water wells (privileged

document target only)

1161339 3/17/1999

(Privileged) 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) (privileged

document target only)

200197 3/22/1999

(Redacted, FOIA Ex 6) Email: Concerns re use

of Lava Cap Mine Road as access road &

suggests use of Loma Rica Road, w/marginalia

R09: Brenner, Resident, Michael (City of

Nevada City)

R09: Mccracken, Catherine

(Environmental Protection Agency -

Region 9), R09: Schutz, Michelle


Region 9)

Page 2 of 10

Lava Cap Mine

Superfund Site



Final Index



200198 3/22/1999

(Redacted, FOIA Ex 6) Ltr: Concerns re use of

Lava Cap Mine Road as access road & suggests

use of Loma Rica Road

R09: Brenner, Resident, Michael (City of

Nevada City)

R09: Mccracken, Catherine


Region 9), R09: Schutz, Michelle


Region 9)

118465 3/29/1999

Excerpt: Community involvement plan (CIP),

community concerns portion, w/TL to D

Sokolove fr C McCracken

R09: (Environmental Protection Agency -

Region 9)

118312 6/17/1999Ltr: Concerns re man-made chemicals used to

remove arsenic fr river, w/env & attch

R09: Doleman, Will (A Call for Water

Sanity! Monitoring Group)

R09: Schutz, Michelle (Environmental

Protection Agency - Region 9)

88217861 6/21/1999 Remedial site assessment decisionR09: Douglas, Carolyn (Environmental


88217754 9/1/1999 Field sampling plan for RI/FS R09: (C H 2 M Hill, Inc)R09: (Environmental Protection Agency -

Region 9)

88217761 9/1/1999 Quality assurance project plan for RI/FS R09: (C H 2 M Hill, Inc)R09: (Environmental Protection Agency -

Region 9)

88217813 9/1/1999 Community involvement planR09: (Environmental Protection Agency -

Region 9)

88217855 9/30/1999Public Notice: Technical assistance grant

available for Lava Cap Mine


Region 9)R09: (Union, The (Newspaper))

2003221 10/27/1999Technical Memo: Evaluation of Timber Crib

dam & Lost Lake dam site RIR09: Livingston, John (C H 2 M Hill, Inc) R09: Towell, David (C H 2 M Hill, Inc)

88217863 1/1/2000Public Notice: Meeting to present results of

environmental investigation


Region 9)

117639 1/29/2000

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

8/20/00


Sanity! Monitoring Group)R09: (Union, The (Newspaper))

88217844 2/4/2000Public Notice: Technical assistance grant for

Lava Cap Mine



2003223 7/3/2000Ltr: Termination of site voluntary cleanup

agreement, docket #HSA 96-97-025

R09: Tjosvold, James (CA Environmental


Substances Control)

R09: Erdmann, Robert (Robert Erdmann

(Attorney))

Page 3 of 10

Lava Cap Mine

Superfund Site



Final Index



88217862 9/1/2000Fact Sheet: Studies indicate arsenic is primary

concern at site


Region 9)

88217858 11/14/2000Newsclip: Feds - arsenic level in wells not

unususal

R09: Omarzu, Tim (Union, The

(Newspaper))

2003213 1/11/2001Mtg Notes: 12/18/00 meeting - FS scoping &

additional data collection activitiesR09: Towell, David (C H 2 M Hill, Inc)

R09: Seter, David (Environmental

Protection Agency - Region 9), R09:

Bunte, David (C H 2 M Hill, Inc), R09:

Spitzley, John (C H 2 M Hill, Inc)

2003212 1/16/2001Memo: Preliminary assembly of alternatives

for tailingsR09: Bunte, David (C H 2 M Hill, Inc) R09: Towell, David (C H 2 M Hill, Inc)

2003214 1/17/2001Email: Additions to meeting summary &

additional items for labor estimate for FSR09: Bunte, David (C H 2 M Hill, Inc) R09: Towell, David (C H 2 M Hill, Inc)

117334 5/1/2001

Engineering evaluation/cost analysis rpt

(EE/CA), w/attached EPA comments & TL to W

Shaheen fr J Sloss 5/22/01

R09: (I T Corp)


Region 9), R09: (US Army Corps of

Engineers - Fort Crook Area Office)

140288 5/3/2001Public health assessment, evaluation of off-site

contamination

R09: (US Dept of Health & Human Services

- Agency for Toxic Substances & Disease

Registry)

88217881 5/4/2001 Ltr: Request for ARARsR09: Seter, David (Environmental


R09: Ross, Steven (CA Environmental


Substances Control)

117479 5/17/2001

Ltr: Federal & state natural resource trustee

notification - EPA performing RI/FS at site,

Nevada City, CA



R09: Port, Patricia (US Dept of the

Interior - San Francisco)

2003222 5/18/2001Technical Memo: Jurisdictional evaluation of

Timber Crib dam & Lost Lake damR09: Livingston, John (C H 2 M Hill, Inc) R09: Towell, David (C H 2 M Hill, Inc)

88217882 6/12/2001 Ltr: State natural resource trustee notification



Substances Control)



Page 4 of 10

Lava Cap Mine

Superfund Site



Final Index



117480 6/26/2001

Ltr: Re RI/FS, transmits Dept of Fish & Game

resource concerns & recommended mine site

stabilization to prevent downstream

degradation & promote habitat recovery,

w/attch

R09: Curtis, Banky (CA Dept of Fish &

Game)



88217739 7/1/2001 Workplan for site treatability study R09: (C H 2 M Hill, Inc)R09: (Environmental Protection Agency -

Region 9)

117514 7/2/2001

Ltr: Transmits initial DTSC review comments on

draft human health risk assessment rpt,

w/attch



Substances Control)



2003215 7/6/2001Technical Memo: Preliminary development of

alternatives for FS

R09: Cramer, Andy (C H 2 M Hill, Inc), R09:

Bunte, David (C H 2 M Hill, Inc), R09:

Towell, David (C H 2 M Hill, Inc)



88217883 7/31/2001Ltr: Inquiry re US Fish & Wildlife Service's

potential interest in site, w/o fact sheet



R09: White, Wayne (US Fish & Wildlife

Service)

117484 8/22/2001

Memo: Baseline ecological risk assessment &

review of final draft ecological risk assessment,

w/marginalia & attch

R09: Lauren, Darrel (CA Environmental


Substances Control)



Substances Control)

117510 8/23/2001Memo: State review comments on human

health risk assessment (HHRA)

R09: Dibiasio, Karen (CA Environmental


Substances Control)



Substances Control)

117513 9/5/2001

Memo: Transmits DTSC review comments on

draft human health risk assessment (HHRA) &

final draft ecological risk assessment rpts,

w/attch



Substances Control)



118732 10/5/2001Ltr: EPA response to comments on technical

assistance grant (TAG)


Protection Agency - Region 9)R09: Lee, Fred (G Fred Lee & Assoc)

118826 11/1/2001

Field monitoring rpt for RI/FS, field activities

8/01 - 11/01, w/apps A-1 & 2 (replacement

pages) & attchs

R09: (C H 2 M Hill, Inc)R09: (Environmental Protection Agency -

Region 9)

138090 11/1/2001

Field monitoring rpt, quarterly monitoring

activities 8/02, w/apps A-1, A-2 & B & TL to D

Seter fr D Towell 3/3/03


Region 9)

Page 5 of 10

Lava Cap Mine

Superfund Site



Final Index



88217823 11/1/2001RI rpt, public release draft, v1 of 2, rpt & Apps

A-D, w/TL to D Seter fr D Towell 11/2/01R09: (C H 2 M Hill, Inc)


Region 9)

88217824 11/1/2001

RI rpt, public release draft, v2 of 2, App E -

human health risk assessment (HHRA) & App F -

ecological risk assessment (ERA)


Region 9)

88217885 11/1/2001Fact Sheet: EPA studies cleanup options, seeks

public input


Region 9)

118110 11/7/2001Public Notice: EPA seeks public input on Lava

Cap Mine cleanup



88217886 11/13/2001Newsclip: Meetings slated to review Lava Cap

Mine cleanup

R09: Omarzu, Tim (Union, The

(Newspaper))

117652 11/14/2001

Overheads: Powerpoint presentation - risk

assessment summary & remedial alternative

development, community meetings, 11/13/01-

11/14/01


Region 9)

88217887 11/14/2001 Newsclip: Cancer risk from tailings smallR09: Omarzu, Tim (Union, The

(Newspaper))

88217888 12/6/2001Ltr: Expresses thanks for mtgs in Grass Valley

& Nevada City & comments on mtg issues

R09: Cohen, Janet (South Yuba River

Citizens League)



88217889 1/9/2002Ltr: Response to 12/6/01 ltr & comments on

monitoring of groundwater wells




Citizens League)

2003227 3/19/2002 Memo: Review of ARARs, w/attch

R09: Busby, Robert (CA Regional Water


Region)



Substances Control)

118825 4/1/2002Technical Memo: Treatability study rpt,

w/attchR09: (C H 2 M Hill, Inc)


Region 9)

2003216 4/1/2002Technical Memo: Treatability study rpt,

w/attch & TL to D Seter fr D Towell 4/5/02R09: (C H 2 M Hill, Inc)


Region 9)

Page 6 of 10

Lava Cap Mine

Superfund Site



Final Index



2003224 7/22/2002

Email: 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)

R09: Lae, Tom (C H 2 M Hill, Inc) R09: Towell, David (C H 2 M Hill, Inc)

118726 8/8/2002Ltr: EPA response to technical advisor's

comments, w/o attchs




Citizens League)

118789 8/22/2002 Ltr: EPA response to DTSC comments re siteR09: Seter, David (Environmental




Substances Control)

122055 9/30/2002


activities, 2/02 & 5/02, w/TL to D Seter fr D

Towell 10/2/02


Region 9)

140246 11/1/2002Fact Sheet: Arsenic in well water, what you

should know


Region 9)

130329 12/10/2002Mtg Agenda: Public FS workshops, 12/10 -

agenda, & handouts, w/attchs

R09: Hodge, Don (Environmental


2003217 1/1/2003Background approach & comparison of site

water quality data to CTR criteriaR09: (C H 2 M Hill, Inc)


Region 9)

2003225 1/6/2003Ltr: Follow up to EPA meeting on remediation

approaches for site Lost Lake areaR09: Lee, Fred (G Fred Lee & Assoc)


Citizens League)

2003226 1/7/2003

Ltr: Comments on 8/8/02 EPA response to

comments re issues pertinent to investigation

& remediation of site, w/o encls

R09: Lee, Fred (G Fred Lee & Assoc)R09: Cohen, Janet (South Yuba River

Citizens League)

2003228 1/16/2003Memo: Transmits mining regulations, title 27,

w/attch (faxed)



Region)



Substances Control)

140568 4/2/2003

Action Memo: Request for removal action,

w/o enforcement confidential addendum (00

Removal Start 002)



R09: Meer, Daniel (Environmental


Page 7 of 10

Lava Cap Mine

Superfund Site



Final Index



2003229 4/4/2003Email: Response to questions re site surface

water discharge ARARs, w/history

R09: Mchenry, Richard (CA Regional Water


Region)



2003230 4/11/2003Ltr: Comments on ARAR meeting issues re site

remediation (seter4-7-03T.doc), w/email TLR09: Lee, Fred (G Fred Lee & Assoc)



160134 6/1/2003


activities 11/02, w/apps A-1, A-2 & B & TL to D

Seter fr D Towell 6/7/03


Region 9)

2003231 7/23/2003Email: Comments on CH2M Hill preliminary

remediation goals rptR09: Lee, Fred (G Fred Lee & Assoc)



160080 8/21/2003Ltr: Potential applicable or relevant &

appropriate regulations (ARARs), w/attch

R09: Goldsmith, Sara (Environmental


R09: Wong, Derek (CA Environmental


Substances Control), R09: Ross, Steven

(CA Environmental Protection Agency -

Dept of Toxic Substances Control)

2003235 10/1/2003Draft addendum #4 to field sampling plan for

RI/FSR09: (C H 2 M Hill, Inc)


Region 9)

2003218 11/1/2003


activities 2/03 & 5/03, w/apps A1a, A1b, A2 &

B & TL to D Seter fr D Towell 11/14/03


Region 9)

2003232 11/14/2003

Review of draft mine area FS (LavaCapFS-

comments.pdf), w/email TL to D Seter fr J

Cohen 11/25/03

R09: Lee, Fred (G Fred Lee & Assoc)R09: (Environmental Protection Agency -

Region 9)

2003233 11/25/2003

Ltr: Review & comments on draft mine area

FS, w/attch (draftfsmineoudraft.doc), w/email

TL to D Seter & F Lee fr S Ross



Substances Control)



2003234 12/1/2003 Ltr: EPA comments on draft mine area FSR09: Seter, David (Environmental

Protection Agency - Region 9)R09: Towell, David (C H 2 M Hill, Inc)

2006459 2/1/2004Fact Sheet: Proposed plan for Mine Area

operable unit


Region 9)

Page 8 of 10

Lava Cap Mine

Superfund Site



Final Index



2006460 2/1/2004Mine area FS, public release draft, w/apps A-H

& TL to D Seter fr D Towell 2/6/04R09: (C H 2 M Hill, Inc)


Region 9)

2006457 2/5/2004

List of US EPA guidance documents consulted

during development & selection of response

action for site


Region 9)

2006461 2/11/2004Public Notice: EPA announces public comment

period on proposed plan for site, w/TL


Region 9)

201061 2/17/2004(Redacted, FOIA EX 6) Email: Comments on

preferred alternative

R09: Bernbeck, Resident, Debra (City of

Grass Valley), R09: Bernbeck, Resident,

Volkert (City of Grass Valley)



2035269 2/18/2004Email: Offer to provide information re removal

of As in surface water

R09: Field-ridley, Genevieve (Walker &

Assoc, Inc), R09: Walker, William (Walker

& Assoc, Inc)



2050201 2/18/2004

Newsclip: Public Notice - EPA seeks public

comment on proposed cleanup plan for Mine

Area of site

R09: (Union, The (Newspaper))

201063 2/26/2004

(Redacted, FOIA EX 6) Ltr: Questions EPA

conclusion that site poses threat to human &

ecological health, w/email TL 2/27/2004

R09: Shoemaker, Robert (NONE)R09: Seter, David (Environmental


2035282 2/26/2004Meeting Minutes: Transcript of 2/26/2004

public hearing on proposed cleanup plan


Region 9)

201062 2/27/2004

(Redacted, FOIA EX 6) Email: Expresses interest

in toxic level in Lost Lake & requests surface

water test results

R09: Gelfan, Corrine (NONE), R09: Grant,

Jerry (NONE)



201064 2/29/2004

(Redacted, FOIA EX 6) Email: Comments on

preferred alternatives 2-3 & 3-4 & cleanup of

Lost Lake

R09: Bernbeck, Resident, Debra (City of

Grass Valley), R09: Bernbeck, Resident,

Volkert (City of Grass Valley)



Page 9 of 10

Lava Cap Mine

Superfund Site



Final Index



201065 3/8/2004(Redacted, FOIA EX 6) Ltr: Supports alternative

3-4, w/email TL

R09: Dyer, Resident, James (City of Grass

Valley), R09: Dyer, Resident, Joan (City of

Grass Valley)


Protection Agency - Region 9), R09:

Hodge, Don (Environmental Protection

Agency - Region 9)

2035275 3/9/2004Ltr: Comments on 2/2004 proposed cleanup

plan for Mine OU (OU-1)



Region)



2035276 3/10/2004Comments on 2/2004 proposed cleanup plan

for Mine Area OUR09: Lee, Fred (G Fred Lee & Assoc)

201066 3/11/2004(Redacted, FOIA ex 6) ROC: Comments on

proposed cleanup plan for Mine Area OU

R09: Devincenzi, Resident, Mary (City of

Grass Valley)



201067 3/19/2004(Redacted, FOIA EX 6) ROC: Comments on

proposed cleanup plan for Mine Area OU

R09: Parvin, Resident, Robert (City of

Grass Valley)



201068 3/23/2004

(Redacted, FOIA ex 6) Ltr: Comments in

response to public meeting on 2/26/2004,

w/email TL

R09: Miller, Resident, Michael (City of

Alleghany)



2035280 3/23/2004Ltr: Comments on proposed cleanup of site,

w/attchs & marginalia


Sanity! Monitoring Group), R09:

(Greenhorn Road Assn)



2035281 3/24/2004

Ltr: Comments on preferred alternative for

proposed cleanup plan for Mine OU, w/attch A

& tables, w/o attch B



Substances Control)



2037653 9/28/2004Record of Decision (ROD), mine area OU (01

ROD 001)


Region 9)

2300609 9/22/2006

Ltr: Concurs with explanation of significant

differences (ESD) for 9/28/04 record of

decision (ROD), env

R09: Tjosvold, James (CA Environmental


Substances Control)

R09: Adams, Elizabeth (Environmental


2119512 9/29/2006

Explanation of significant differences (ESD) to

9/28/04 ROD, Parts 1 & 2 (signed) (1 ESD -

Mine Area OU 001)

R09: Adams, Elizabeth (Environmental


Page 10 of 10

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