san gabriel valley (area 4) la puente, ca puente valley ou

San Gabriel Valley (Area 4)

Superfund Site

La Puente, California

Puente Valley

Operable Unit

NPL Site Administrative Record File

Index

First Released: 06/19/1997

Update #1: 01/05/1998

Update #2: 10/10/2003

Update #3: 08/04/2005

Update #4: 09/16/2011

SEMS-RM DOCID # 100017886

About the Administrative Record

This administrative record file contains the documents that the U.S. Environmental Protection

Agency (EPA) is currently using to identify appropriate remedial activities for the San Gabriel

Valley (Area 4) Superfund Site, Puente Valley Operable Unit in Los Angeles County, California.

It is presented in DVD and with companion binders of large format documents. The

administrative record file was updated to include additional Site-related actions and information

as part of the implementation of the cleanup plan as outlined in 1998 Interim Record of Decision

(ROD), and as modified by the 2005 Explanation of Significant Differences (ESD).

EPA welcomes questions and comments on documents contained in the administrative record

file. Please contact:

Raymond Chavira or: Dana Barton

Remedial Project Manager Community Involvement Coordinator

U.S. EPA (SFD-7-3) U.S. EPA (SFD-6-3)

75 Hawthorne Street 75 Hawthorne Street

San Francisco, CA 94105-3972 San Francisco, CA 94105-3972

(415) 947-4218 (415) 972-3087 or (800) 231-3075

[email protected] [email protected]

What is an Administrative Record?

An administrative record is a collection of documents that 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 that support a response decision are placed in the administrative record.

Relevant documents that were relied upon in selecting the response action, as well as relevant

documents 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. 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 94105-3972, Phone: (415) 972-3128

mailto:[email protected]

mailto:[email protected]

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.

San Gabriel Valley (Area 4)

Superfund Site

Puente Valley Operable Unit

Administrative Record

Acronyms and Abbreviations

ABBREVIATION MEANING

AB Assembly Bill

AO Administrative Order

App(s) Appendix(ces)

Assoc Associates

attch Attachment

Ave(s) Avenue(s)

bldg Building

CA California

CAO Cleanup & Abatement Order

CD Compact Disc

CDM Camp, Dresser and McKee, Inc

CERCLA

Comprehensive Environmental Response, Compensation and

Liability Act

CLP Contract Laboratory Program

COCs Chain of Custody (forms)

Corp Corporation

CSIWNP Compliance, Sentinel, and Investigation Well Network Plan

Dept Department

dist District

doc Document

DTSC CA Dept of Toxic Substances and Control

E East

encl Enclosure

env Envelope

EPA Environmental Protection Agency

et al and others

etc et cetera (and so on)

exh exhibit

FedEx Federal Express

fr From

FS Feasibility Study

FSP Field Sampling Plan

ft feet

GIS Geographic Information System

in inch(es)

Inc Incorporated

info Information

LACDPW Los Angeles County Department of Public Works

LOE Level of Effort

ltr Letter

Memo Memorandum

mtg Meeting

NPDES National Pollutant Discharge Elimination System

O&M Operation & Maintenance

OSCO Oil & Solvent Process Co

OU Operable Unit

p Page

PCE Tetrachloroethylene

pp Pages

PRP(s) Potentially Responsible Party(ies)

pt Part

PVOU Puente Valley Operable Unit

PVSC Puente Valley Steering Committee

RA Remedial Action

Rd Road

RD Remedial Design

RD/RA Remedial Design/Remedial Action

re Regarding

ref Referencing

RI Remedial Investigation

RI/FS Remedial Investigation/Feasibility Study

ROC Record of Communication

ROD Record of Decision

rpt Report

S South

SAP Sampling & Analysis Plan

SB Senate Bill

SDG Sample Delivery Group

SGV San Gabriel Valley

SLIC Spills, Leaks, Investigations & Cleanups

SOW Statement of Work

STLC Soluble Threshold Limit Concentrations

SVE Soil Vapor Extraction

TCA Trichloroethane

TCE Trichloroethylene

TDS Total Dissolved Solids

TL Transmittal Letter

TM Technical Memo

UAO Unilateral Administrative Order

v Volume

VES Vapor Extraction System

VOC(s) Volatile Organic Compound(s)

vs Versus

w/ With

w/o Without

This administrative record is available for viewing at the Superfund Records Center in San

Francisco, the Hacienda Heights Public Library; 16010 La Monde Street, Hacienda Heights, CA

91744; La Puente Public Library, 15920 East Central Avenue, La Puente, CA 91790; and the

West Covina Public Library, 1601 West Covina Parkway, West Covina, CA 91790.

San Gabriel Valley (Area 4) Superfund Site


Puente Valley Operable Unit Administrative Record

First Released 06-17-1997; Last Updated 09-16-2011in CHRONOLOGICAL order

Document ID Document Date Title Author Addressee

2192345 8/3/1952

Aerial Photos (19): Project GS-VP, items #18-2, 18-3,

18-4, 18-5, 18-41, 18-43...18-74 date flown 8/1/52-

8/3/52 (B&W, 9-1/2 x 9-3/4 in)

R09: (US Geological Survey)

15022 7/1/1961

Design memo #2, general design for Thompson Creek

& San Jose Wash Channel, San Jose Creek System,

w/TL fr W Crumlish 11/29/61, w/o oversize parts

R09: (US Army Corps of Engineers - Los

Angeles District)

20586 7/1/1961

Design memo #2, general design for Thompson Creek

& San Jose Wash Channel, San Jose Creek System

(oversize parts only - plates 2-8, aerial photography of

1959, aerial mosaic project location)

R09: (US Army Corps of Engineers)

2232642 9/17/1982File review request for files re Benchmark

(handwritten)

R09: Wilson, Robert (Brown & Caldwell

Consultants)

R09: (CA Regional Water Quality

Control Board - Los Angeles Region)

32650 10/9/1985Public Notice: VOCs found in water supply wells,

w/10/9/85 town meeting announcement

R09: (San Gabriel Valley Water Co),

R09: (CA Dept of Health Services)

R09: (All Consumers of San Gabriel

Valley Water Co)

2232880 11/22/1985

Ltr: Transmits & requests to complete chemical use

questionnaire for Benchmark Technology facility, City

of Industry, w/o attch

R09: Ghirelli, Robert (CA Regional

Water Quality Control Board - Los

Angeles Region)

R09: (Benchmark Technology, Inc)

2232879 12/6/1985Chemical storage & use questionnaire for Benchmark

Technology facility, City of Industry

R09: Hall, Jerry (Benchmark

Technology, Inc), R09: Bowman,

William (Benchmark Technology, Inc)



13366 2/26/1986

Ltr: Results of analyses of water samples taken fr

Southwest Suburban Water Services well(s) in La

Puente, w/charts, w/o mail receipt #P000-399-107

R09: Ziemba, Neil (Environmental

Protection Agency - Region 9)

R09: Jochem, Timothy (Southwest

Suburban Water Services)

13369 2/26/1986

Ltr: Results of analyses of water samples taken fr La

Puente Valley County Water District wells in La

Puente, w/charts, w/o mail receipt #P000-399-090



R09: Jaureguy, Mary (La Puente

Valley County Water District)

13370 2/26/1986

Ltr: Results of analyses of water samples taken fr

Maple Water Co wells in La Puente, w/charts, w/o mail

receipt #P000-399-092


Protection Agency - Region 9)R09: Ritchie, J (Maple Water Co, Inc)

Page 1 of 88






2232876 6/13/1986

Ltr: Requests for submittal of subsurface investigation

workplan by 7/15/86 following site inspection on

12/16/85 at Benchmark Technology facility

R09: Delacourt, Raymond (CA Regional


Angeles Region)

R09: Hall, Jerry (Benchmark

Technology, Inc)

10196 6/23/1986Newsclip: Bill would reimburse homes for water scare,

ref SB 2283

R09: Tamaya, Steve (San Gabriel Valley

Tribune)

2232875 6/30/1986

Memo: Informs that E Nelson requested written

documentation of Regional Board's authority to

require subsurface investigation at Benchmark

Technology, w/o attch, w/marginalia

R09: Bishop, Jonathan (CA Regional


Angeles Region)

R09: Delacourt, Raymond (CA

Regional Water Quality Control

Board - Los Angeles Region)

2232874 7/2/1986

Ltr: Response to inquiry re documentation of Regional

Board's authority to require subsurface investigation

at Benchmark Technology, w/o attch

R09: Delacourt, Raymond (CA Regional


Angeles Region)

R09: Nelson, Edward (Benchmark

Technology, Inc)

2232872 7/31/1986

Ltr: Workplan for conducting subsurface investigation

at Benchmark Technologies in City of Industry,

w/marginalia & Post-it note fr H Yacoub to JB

requesting response

R09: Linkletter, George (Woodward-

Clyde Consultants)

R09: Delacourt, Raymond (CA



2232871 8/28/1986Memo: Reviews proposed workplan for Benchmark

Technologies in City of Industry, w/received stamp

R09: Custis, Kit (CA State Water

Resources Control Board)

R09: Yacoub, Hank (CA Regional


Angeles Region)

2232873 8/28/1986

Memo: Reviews proposed workplan for Benchmark

Technologies in City of Industry, w/ltr 7/31/86 re

workplan for conducting subsurface investigation,

marginalia, figure 1 re soils & Post-it note re sending to

State Board for review

R09: Custis, Kit (CA State Water

Resources Control Board)



Angeles Region)

2232870 10/3/1986

Ltr: Reviews subsurface investigation workplan dated

7/31/86 & requests for submittal of revised workplan

by 10/17/86

R09: Yacoub, Hank (CA Regional Water

Quality Control Board - Los Angeles

Region)


Technology, Inc)

2232869 10/29/1986

Ltr: Responds to ltr 10/3/86 fr Regional Board re

workplan submitted on 6/31/86 [sic] & informs that

Woodward-Clyde submits ltr as addendum to

workplan for proposed investigation at Benchmark

Technologies site, City of Industry

R09: Linkletter, George (Woodward-

Clyde Consultants)



Angeles Region)

Page 2 of 88






2232868 11/25/1986

Ltr: Acknowledges receipt of addendum to subsurface

investigation workplan dated 10/29/86 & approves

workplan as amended



Region)


Technology, Inc)

10226 11/28/1986Newsclip: Identifying water pollution source project's

goal

R09: Garber, Lee (San Gabriel Valley

Tribune)

10227 11/28/1986Newsclip: Tainted wells in El Monte, La Puente

targeted for inspection in new program


Tribune)

2232867 12/23/1986

Ltr: Confirms phone discussion on 12/19/86 re

extension of time fr 12/31/86 to 1/5/87 & informs that

Benchmark Technology approved contract to

Woodward-Clyde to start testing on 1/5/87, ref AB

1803, subsurface investigation


Technology, Inc)

R09: Chandler, Philip (CA Regional


Angeles Region)

2232877 1/9/1987

Ltr: Response to ltr 11/25/86 fr Regional Board to E

Nelson & informs that soil gas survey will be

conducted week of 1/12/87 & drilling & sampling on

1/21/87

R09: Metcalf, Linda (Woodward-Clyde

Consultants)



Angeles Region)

2232865 1/30/1987

Notification of hazardous waste discharge -

groundwater contamination at Benchmark

Technologies site, 200 Turnbull Canyon Rd, City of

Industry, w/marginalia



2232866 1/30/1987

Ltr: Confirms phone discussion on 1/29/87 re

analytical results indicate presence of chlorinated

compounds in soil & groundwater at Benchmark

Technologies site, City of Industry


Consultants)



Angeles Region)

2232863 2/18/1987

Ltr: Transmits & requests for review on final rpt on

subsurface investigation conducted at Benchmark

Technology facility, City of Industry, w/o attch


Consultants)



Angeles Region)

2234114 2/18/1987Rpt on subsurface investigation conducted at

Benchmark Technology facilityR09: (Woodward-Clyde Consultants) R09: (Benchmark Technology, Inc)

2232667 4/1/1987

Workplan, soil & groundwater investigation at

Benchmark Technology, City of Industry, w/Worldwide

Express airbill dated 4/15/87

R09: (Woodward-Clyde Consultants) R09: (Benchmark Technology, Inc)

Page 3 of 88






2232862 4/14/1987

Ltr: Transmits hazardous waste manifest for dirt & well

water disposed of fr subsurface investigation in 2/87

at Benchmark Technology facility, City of Industry,

w/attch


Technology, Inc)



Angeles Region)

2232845 4/15/1987

Ltr: Transmits & requests for approval on workplan for

Benchmark Technology submitted in response to ltr

3/10/87 fr Regional Board, w/o attch


Consultants)



Angeles Region)

2232844 6/17/1987

Ltr: Comments on workplan for further site

assessment at Benchmark Technology & informs that

responses are due by 6/30/87

R09: Sakaida, Roy (CA Regional Water


Region)


Technology, Inc)

2232843 6/19/1987Ltr: Request for 2-week extension of 6/30/87 deadline

for modification of Benchmark workplan


Consultants)



Angeles Region)

2192344 7/12/1987

Photos (16): San Gabriel surface water, San Jose Creek,

San Gabriel River, Rio Hondo Channel sampling sites,

7/9/87-7/12/87, w/annotations (color, 3-1/2 x 5 in)

R09: (C H 2 M Hill, Inc)

2232842 7/13/1987

Handwritten Notes: Benchmark Technology was TRW

1967-84, inquiry from Ralph Helm, Woodward-Clyde is

consultant for cleanup



2232665 9/3/1987

Ltr: Response to Regional Board's comments on

workplan submitted on 4/15/87 on behalf of

Benchmark Technology, w/appendix A, well

construction & groundwater sampling procedures &

proposed schedule for 2nd phase investigation


Consultants)



Angeles Region)

2232664 10/22/1987

Ltr: Progress rpt, soil boring installation & 2nd round

of monitoring well sampling at Benchmark Technology,

w/attchs


Consultants)



Angeles Region)

5980 11/18/1987

Field sampling plan for sampling surface waters,

addendum #1, San Gabriel Basin RI/FS, w/plate 1,

approximate locations of 2nd round surface water

sampling sites

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

Agency - Region 9)

Page 4 of 88






2232663 1/12/1988TL: Phase 2 final rpt, soil & groundwater investigation,

Benchmark Technology


Consultants)



Angeles Region)

2192389 2/1/1988Table: Phase 3 site assessment, groundwater quality

info file, 1987

2231145 2/2/1988Workplan, phase 3 soil & groundwater investigation -

Benchmark Technology facility, City of IndustryR09: (Woodward-Clyde Consultants) R09: (Benchmark Technology, Inc)

2232662 2/3/1988TL: Phase 3 workplan, soil & groundwater

investigation, Benchmark Technology


Consultants)



Angeles Region)

2232858 2/26/1988

Ltr: Response to Regional Board review of phase 3

workplan at Benchmark Technology facility, w/figure

2A


Consultants)



Angeles Region)

2192390 4/7/1988Table: Phase 3 site assessment, groundwater quality

info, 1st quarter 1988 (attch 1)

5524 4/19/1988

Ltr: Expression of concerns about 10 companies

contaminating groundwater in Main San Gabriel Basin,

including Hexcel/MCI, Macklanburg-Duncan, Ashland

Chemical Co, Hysol, Oakite Products, Richardson

Battery, etc

R09: Nicholson, Jr, R (San Gabriel

Valley Water Co)



Angeles Region)

2232857 4/22/1988

Ltr: Review of proposed workplan for further site

investigation at Benchmark Technology facility dated

2/2/88 & response to comments dated 2/26/88



Region)


Technology, Inc)

2232856 5/10/1988

Ltr: Addendum #1 to phase 3 workplan for soil &

groundwater investigation at Benchmark Technology

facility, w/figures 2A & 3A


Consultants)



Angeles Region)

2232855 5/18/1988

Ltr: Confirms Regional Board's verbal approval of

phase 3 workplan as modified in addendum #1 for soil

& groundwater investigation at Benchmark

Technology facility


Consultants)



Angeles Region)

2232849 6/6/1988

Memo: Laboratory rpt, 6 soil samples & 1 water

sample, analysis VOCs by EPA 624/8240, ref

Benchmark site, w/attchs

R09: Northington, D (West Coast

Analytical Service, Inc), R09: Shelton,

Michael (West Coast Analytical Service,

Inc)

R09: Phung, Tan (Woodward-Clyde

Consultants)

Page 5 of 88






2232850 6/6/1988

Memo: Laboratory rpt, 1 soil samples & 1 water

sample, analysis VOCs by EPA 624/8240, ref





Inc)


Consultants)

2232848 6/20/1988

Ltr: Conditional approval of proposed workplan for

further site investigation at Benchmark Technology

facility dated 2/21/88 [sic] & response to comments

dated 2/26/88 & 5/18/88



Region)

R09: Barkley, Richard (Benchmark

Technology, Inc)

2232851 6/21/1988

Memo: Laboratory rpt, 6 water samples & 1 soil

sample, analysis VOC by EPA 624/8240, ref Benchmark

site, w/attchs




Inc)


Consultants)

2232853 6/21/1988Memo: Laboratory rpt, 8 water samples, analysis VOC

by EPA 624, ref Benchmark site, w/attchs




Inc)


Consultants)

2232852 6/27/1988Memo: Laboratory rpt, 12 soil samples, analysis VOC





Inc)


Consultants)

2192391 7/14/1988Table re phase 3 site assessment, groundwater quality

info, 2nd quarter 1988

2232854 9/16/1988Memo: Laboratory rpt, 3 water samples, analysis VOC


R09: Hovanec, Michael (West Coast



Inc)


Consultants)

2232846 10/10/1988

Ltr Progress rpt, phase 3 soil & groundwater

investigation at Benchmark Technology, w/tables 1-3

& figure 1, w/o figure 2


Consultants)



Angeles Region)

2232861 10/10/1988

Ltr: Request for soil disposal at Puente Hills Landfill, ref

soil & groundwater investigation, Benchmark

Technology facility, City of Industry, w/tables 1 & 2


Consultants)

R09: Williams, Kay (Puente Hills

Landfill #6)

Page 6 of 88






2232860 11/8/1988

Ltr: Request for approval to dispose of 3 additional

drums of soil at Puente Hills Landfill, ref ltr 10/10/88 fr

Woodward-Clyde requesting approval fr Puente Hills

Landfill to dispose of soil cuttings & drilling mud fr



Consultants)

R09: Hinton, John (CA Dept of

Health Services - Toxic Substances

Control Div)

2231146 12/1/1988

Phase 3 soil & groundwater investigation, Benchmark

Technology facility, City of Industry - appendix D,

laboratory rpts

R09: (Woodward-Clyde Consultants)

R09: (Hufstedler, Miller, Kaus &

Beardsley (Attorneys)), R09: (T R W,

Inc)

2232673 1/6/1989

Ltr: Proposed modifications to tentative cleanup &

abatement order (CAO) #88-137, Benchmark

Technology site, City of Industry


Consultants)



Angeles Region)

2232672 1/18/1989 Sign-in sheet for 1/18/89 Benchmark/TRW meeting

2232671 2/28/1989Ltr: Vapor extraction proposed for soil remediation at

Benchmark Technology facility, City of Industry



Region)

R09: Hartmann, James (Woodward-

Clyde Consultants)

10660 3/1/1989Newsclip: Funds due (LA Regional Water Quality

Control Board) for tracing tainted water sources


Tribune)

2232668 3/31/1989

Ltr: Soil disposal requests, soil & groundwater

investigation at Benchmark Technology, City of

Industry, w/tables 1-3


Consultants)



Angeles Region)

2232666 4/1/1989

Phase 4 workplan, groundwater investigation at

Benchmark Technology, City of Industry, w/TL 4/26/89

to P Chandler


R09: (Hufstedler, Miller, Kaus &

Beardsley (Attorneys)), R09: (T R W,

Inc)

2232021 4/12/1989

Cleanup & abatement order (CAO) #89-034 -

Benchmark Technology site, City of Industry, w/TL

4/12/89 to TRW & fax TL 8/11/98 to E Solomon



Angeles Region)

R09: (Benchmark Technology, Inc),

R09: (T R W, Inc)

2192392 4/14/1989Tables re phase 3 site assessment, groundwater

quality info & water elevations, 1st quarter 1989

2232658 4/20/1989

Ltr: Response to ltr 11/8/88 to J Hinton re disposal of

soil cuttings & drilling mud at Puente Hills Landfill, ref

Benchmark Technology facility, City of Industry

R09: Lau, Stanford (CA Dept of Health

Services)

R09: Metcalf, Linda (Woodward-

Clyde Consultants)

Page 7 of 88






2183479 5/1/1989

Table 2, soil analytical results, EPA method 8240,

w/volatile organics analysis data sheets, EPA method

624 for MW2, MW3, MW4

2232660 5/3/1989Ltr: Response to ltr received 4/3/89 re soil disposal

request, ref Benchmark Technology, City of Industry



Region)


Clyde Consultants)

2232659 5/4/1989

Ltr: Transmits ltr 4/20/89 fr CA Dept of Health Services

responding to request fr Woodward-Clyde to dispose

of soil at landfill & inquires about alternate procedure

to obtain disposal approval, ref Benchmark

Technology project, w/o attch


Consultants)



Angeles Region)

2232657 5/22/1989

Ltr: Confirms Regional Board's request that quarterly

monitoring program be initiated in 6/89, ref

Benchmark Technology facility, City of Industry,

w/figure 1, site plan


Consultants)



Angeles Region)

2232656 5/26/1989

Ltr: Request for extension of due date 6/1/89 for

submittal of soil remediation workplan, ref Benchmark

Technology facility, City of Industry, CAO #89-034

R09: White, Jay (Woodward-Clyde

Consultants)



Angeles Region)

2232655 6/7/1989

Ltr: Response to request in ltr received 5/30/89 for

extension of due date 6/1/89 for submittal of

workplan, ref remediation of unconsolidated

materials, Benchmark Technology facility, City of

Industry, CAO #89-034



Angeles Region)


Technology, Inc)

2232654 6/26/1989Ltr: Results of analysis of 8 water samples received

6/7/89, ref Benchmark project, w/attchs

R09: Schroder, Patricia (Analytical

Technologies, Inc), R09: Amano,

Richard (Analytical Technologies, Inc)


Clyde Consultants)

2232652 6/27/1989

Ltr: Reviews phase 4 workplan for further


facility received 4/27/89, ref CAO #89-034



Region)


Technology, Inc)

Page 8 of 88






2232653 6/27/1989Ltr: Results of analysis of 12 water samples received

6/9/89, ref Benchmark project, w/attchs

R09: Schroder, Patricia (Analytical

Technologies, Inc), R09: Amano,

Richard (Analytical Technologies, Inc)


Clyde Consultants)


info, 2nd quarter 1989 (p 2 missing)

2232651 7/12/1989


submittal of soil & on-site groundwater remediation

workplan & off-site groundwater assessment workplan

for Benchmark Technology facility, ref CAO #89-034


Consultants)



Angeles Region)

2232650 7/14/1989


submittal of revised phase 4 groundwater

investigation workplan for Benchmark Technology

facility, City of Industry


Consultants)



Angeles Region)

2232649 7/18/1989

Ltr: Results of groundwater monitoring conducted in

6/89 at Benchmark Technology site, City of Industry,

w/attchs


Consultants)



Angeles Region)

2232648 7/24/1989Sign-in sheet at meeting between Regional Board,

TRW, Benchmark Technology on 7/24/89

2232646 7/26/1989

Ltr: Expresses appreciation for meeting with Regional

Board on 7/24/89 & discusses common understanding

& agreement on site remediation of Benchmark

Technology facility in City of Industry

R09: Hartley, James (Woodward-Clyde

Consultants)



Angeles Region), R09: Chandler,

Philip (CA Regional Water Quality


2232661 8/3/1989

Ltr: Revisions to 4/26/89 workplan for phase 4


facility, City of Industry, w/figure 1, site plan


Consultants)



Angeles Region)

2232645 9/5/1989

Ltr: Request for extension of due dates 10/1/89 &

11/1/89 to submit on-site remediation workplan & off-

site groundwater assessment workplan for Benchmark

Technology facility, ref CAO #89-034


Consultants)



Angeles Region)

Page 9 of 88






2232643 9/7/1989

Ltr: Expresses concurrences with common

understandings in ltr received 7/27/89 fr Benchmark

Technology Inc re site assessment, ref CAO #89-034



Region)

R09: Hintze, Frank (Benchmark

Technology, Inc)

2232644 9/12/1989

Ltr: Acknowledges receipt of ltr on 9/6/89 requesting

extension of due dates 10/1/89 & 11/1/89 to submit

on-site remedial & off-site groundwater assessment

workplans & informs that chapter 11 bankruptcy filing

by Benchmark may create schedule difficulties



Region)


Technology, Inc)

2164 9/27/1989

Data validation rpt: Case #LV918/4707Y memo #1, site

ID #CAD 980817985, inorganic analysis, w/TL to N

Ziemba fr D Bingham 12/14/89 (no cross reference

key, per RPM G Kistner)

R09: Holmes, J (C H 2 M Hill, Inc)

2232640 10/12/1989

Ltr: Confirms approval of due date extension for

submittal of off-site groundwater assessment

workplan for Benchmark Technology site, City of

Industry


Consultants)



Angeles Region)

2231139 11/1/1989Workplan, off-site groundwater investigation -

Benchmark Technology site, City of IndustryR09: (Woodward-Clyde Consultants)

R09: (Benchmark Holding Group),

R09: (T R W, Inc)

2232639 11/2/1989

Ltr: Request for soil disposal approval, ref Benchmark

Technology site in City of Industry, w/o ltr 3/31/89 fr

Woodward-Clyde Consultants


Consultants)



Angeles Region)

2232010 11/16/1989Oversize Drawing: Site study, Benchmark Technology,

City of Industry (blueline, 30 x 42 in, 1 in = 40 ft)R09: (DeRevere Partnership)

2232638 11/17/1989

Ltr: Informs that Koll Co is in process to purchase

Benchmark Technology site in City of Industry &

requests to confirm Koll's understanding of soil &

groundwater remediation plans, w/attchs

R09: Tilton, Peter (Koll Co)



Angeles Region)

2232636 12/14/1989

Ltr: Updates schedule of activities & confirms

approach to conducting soil remediation at

Benchmark Technology site in City of Industry,

w/schedule of activities


Consultants)



Angeles Region)

Page 10 of 88






2232637 12/14/1989

Sign-in sheet for 12/14/89 meeting between Regional

Board, Benchmark Holding Group, Koll Co, TRW,

Woodward-Clyde

2231140 1/1/1990Soil sampling plan - Benchmark Technology site, City of

IndustryR09: (Woodward-Clyde Consultants)

2231141 1/12/1990

Meeting Agenda: Benchmark remediation program

meeting on 1/12/90 with Regional Board, w/figure 1,

concrete & asphalt sampling locations


2232635 1/14/1990

Meeting Notes: Benchmark remediation program

meeting on 1/12/90 with Regional Board, w/sign-in

sheet (handwritten)



Angeles Region)

2231144 2/22/1990Additional soil sampling at Benchmark Technology

facility, City of Industry, w/oversize drawingR09: (Woodward-Clyde Consultants)


R09: (T R W, Inc)

2232634 2/22/1990TL: Rpt of additional soil sampling at Benchmark

Technology facility, City of Industry


Consultants)



Angeles Region)

2231995 3/2/1990

Meeting Agenda: Benchmark remediation program

meeting on 3/2/90 with Regional Board, w/proposal

for conducting fate & risk assessment & marginalia


32496 4/1/1990

Sampling plan (for EPA contract laboratory program,

CLP) for multiple sites, San Gabriel basin Superfund

area, ref cooperative agreement grant #V-009472-01-1



R09: (Environmental Protection

Agency - Region 9)

4113 5/7/1990

Ltr: General notice & 104(e) request for info - BDP Co,

855 Anaheim-Puente Rd, City of Industry, w/attch 1,

list of recipients & attch 2, info request pursuant to

CERCLA Section 104 & RCRA Section 3007

R09: Clifford, Jerry (Environmental

Protection Agency - Region 9)R09: Norman, James (B D P Co)

2232633 5/16/1990

Ltr: Transmits & requests for approval on soil RA plan,

ref Benchmark Technology facility, City of Industry,

w/o attch

R09: Kwan, Joseph (T R W, Inc)



Angeles Region)

2232632 6/5/1990Sign-in sheet for 6/5/90 meeting between Regional

Board, Koll, TRW, Woodward-Clyde

Page 11 of 88






2231138 6/27/1990Soil cleanup levels for Benchmark facility, City of

IndustryR09: (Woodward-Clyde Consultants)


R09: (T R W, Inc)

2232628 6/27/1990

Excerpt: Soil cleanup levels for Benchmark facility, City

of Industry, table 8, cleanup levels (assuming uniform

cleanup), base case


2232631 7/5/1990

Ltr: Transmits & requests for review on fate &

transport assessment rpt for soil cleanup levels

determination, ref Benchmark facility, City of Industry,

w/o attch, w/FedEx airbill


R09: Chandler, Philip (CA

Environmental Protection Agency -

Dept of Toxic Substances Control)

2195653 7/10/1990

Ltr: Confirms that TRW is willing to participate in

conduct or financing of response activities & will

submit response to 104(e) request for info ltr 5/7/90

by 8/15/90, w/marginalia

R09: Walter, Robert (T R W, Inc)R09: Kistner, Glenn (Environmental


2195649 7/23/1990

Ltr: Confirms that EPA grants The Monadnock Co

extension through 8/10/90 to respond to 104(e)

request for info

R09: Klaiman, Mark (Environmental

Protection Agency - Region 9)R09: Walter, Robert (T R W, Inc)

2195619 7/26/1990

Ltr: Request for submittal of response to 104(e)

request for info ltr Lucas Western Inc received on

6/14/90, w/mail receipts

R09: Clifford, Jerry (Environmental


R09: Hamilton, Mark (Lucas

Western, Inc)

2232627 7/27/1990Meeting Agenda: Meeting with Regional Board on

7/27/90 re Benchmark facilityR09: (Woodward-Clyde Consultants)

2195643 7/31/1990

Ltr: Confirms that EPA grants Lucas Western Inc

(formerly Western Gear) extension through 8/10/90 to

respond to 104(e) request for info



R09: Hamilton, Mark (Lucas

Western, Inc)

2195641 8/3/1990

Ltr: Confirms that EPA grants Lucas Western Inc

(formerly Western Gear) extension through 8/24/90 to

respond to 104(e) request for info



R09: Faeder, Edward (Jefferson

Group, Inc, The)

2195634 8/7/1990

Ltr: Confirms that EPA grants Benchmark Technology

extension through 8/24/90 to respond to 104(e)

request for info, w/marginalia

R09: Johnson, Jeffery (Heller, Ehrman,

White & McAuliffe (Attorneys))



2195627 8/15/1990

Ltr: Request for extension to respond to questions #5

& 6 in general notice & 104(e) request for info 5/7/90

on behalf of client 8th & Proctor Investment Co, owner

at 14724 E Proctor Ave, City of Industry, currently

leased by Lucas Western, w/marginalia

R09: Walsh, Adele (Adele Walsh

(Attorney))

R09: Kistner, Glenn (Environmental

Protection Agency - Region 9), R09:

Klaiman, Mark (Environmental


Page 12 of 88






2232626 8/22/1990Ltr: Informs that A Salhotra will send back-of-envelope

calculations, w/o attch (handwritten)

R09: Salhotra, Atul (Woodward-Clyde

Consultants)



Angeles Region)

2232625 8/31/1990

Memo: Back-of-envelope calculations to estimate

vapor phase diffusion in unsaturated zone, ref soil

cleanup levels for Benchmark facility, w/preliminary

analysis of vapor migration in unsaturated zone at

Benchmark facility

R09: Salhotra, Atul (Woodward-Clyde

Consultants)



Angeles Region)

2183488 9/11/1990

Excerpts: 1) Phase 2 site assessment 9/11/90, 2)

remedial action (RA) plan for remediation of soil by

vapor extraction 2/10/97, 3) ltr 4/2/97 re 1st semi-

annual 1997 groundwater monitoring rpt

2183490 9/11/1990

Table re PCE/TCE use at site, site investigations, PCE in

soil, w/excerpts fr 1) Phase 2 site assessment 9/11/90

& 2) ltr 10/24/91 re 3rd quarter 1991 groundwater

monitoring rpt

2231137 10/1/1990Health & safety plan for Benchmark RA program, City

of IndustryR09: (Woodward-Clyde Consultants) R09: (T R W, Inc)

2232641 10/3/1990

Ltr: Informs that TRW & Benchmark Holding Group are

proceeding to demolish existing structures, ref soil RA

plan for Benchmark Technology facility, City of

Industry dated 5/10/90


Consultants)



Angeles Region)

2232623 11/2/1990Meeting Agenda: Benchmark RA program status

review meeting with Regional Board on 11/2/90R09: (Woodward-Clyde Consultants)

2232624 11/2/1990Sign-in sheet for Benchmark remedial action program

status review meeting with Regional Board on 11/2/90

2232622 11/5/1990

Ltr: Transmits health & safety plan for Benchmark RA

program & responds to request for evacuation plan for

adjacent occupied structure, w/o attch

R09: Hajali, Paris (Woodward-Clyde

Consultants)



Angeles Region)

2234115 11/8/1990

Quarterly rpt, groundwater monitoring - Benchmark

Technology, City of Industry, prepared for TRW Inc

[File #102.0007]

R09: (C K Y Environmental Services, Inc) R09: (T R W, Inc)

Page 13 of 88






2232620 11/26/1990 TL: Quarterly groundwater monitoring R09: Clark, John (T R W, Inc)



Angeles Region)

2232619 11/28/1990

Ltr: Acknowledges receipt of draft ltr fr Regional Board

in project review meeting on 11/2/90 responding to

soil RA plan for Benchmark site & requests that

Regional Board issue final ltr response to RA plan


Consultants)



Angeles Region)

32304 11/30/1990Final draft, quality assurance/quality control guidance

document, San Gabriel BasinR09: (C H 2 M Hill, Inc)


Agency - Region 9)

2232618 12/18/1990

Ltr: Revised scope of services, phase 4 groundwater

investigation - Benchmark Technology site, City of

Industry, w/figures 1 & 2

R09: Niemeyer, Linda (Woodward-

Clyde Consultants)



Angeles Region)

2231143 1/16/1991

Workplan for soil excavation, stockpile preparation &

vapor extraction & treatment system, Benchmark

remedial action program, City of Industry, w/oversize

drawings

R09: (Woodward-Clyde Consultants) R09: (T R W, Inc)

2232008 1/18/1991Meeting Agenda: Benchmark RA program meeting on

1/18/91 with Regional Board, w/marginaliaR09: (Woodward-Clyde Consultants)

2232009 1/18/1991 Sign-in sheet for 1/18/91 Benchmark/TRW meeting

2231142 1/29/1991Modeling of vapor extraction system, Benchmark

Technology facility, City of Industry, w/attchsR09: (Woodward-Clyde Consultants) R09: (T R W, Inc)

2232007 2/4/1991

Ltr: Transmits & requests for review on modeling of

vapor extraction system dated 1/29/91, ref Benchmark

Technology facility, City of Industry, w/o attch


Consultants)

R09: Chandler, Philip (CA



2232005 2/8/1991

Ltr: Response to approval ltr 1/31/91 fr Regional Board

re phase 4 groundwater investigation at Benchmark

site, City of Industry, w/figure 1


Clyde Consultants)



Angeles Region)

2232003 2/18/1991

Ltr: Transmits info re geophysical logging equipment &

methods proposed for 130-ft boring in response to ltr

1/31/91 re workplan for Benchmark Technology site,

City of Industry, w/attch (handwritten)

R09: Scott, Robert (Woodward-Clyde

Consultants)



Angeles Region)

Page 14 of 88






2232001 2/19/1991

Meeting Agenda: Benchmark RA program project

status review meeting on 2/19/91 with Regional

Board, w/marginalia


2232002 2/19/1991 Sign-in sheet for 2/19/91 Benchmark meeting

2232000 2/21/1991

Ltr: Response to ltr 1/31/91 fr R Sakaida re phase 4

groundwater investigation/performance of vacuum

extraction pilot test at Benchmark site, City of Industry

[CAO #89-034]


Consultants)



Angeles Region)

2231999 2/25/1991

Memo: Cost estimates for mud rotary drilling with no

sampling ($45/ft), with 5-ft sampling intervals

($57/ft)..., ref Benchmark project, w/attch (faxed,

handwritten)


Clyde Consultants)



Angeles Region)

2231998 2/26/1991

Memo: PVC VEE-WIRE screens, PVC slotted pipe, PVC

riser pipe, stainless steel VEE-WIRE screens for

monitoring wells...specifications fr Diversified Well

Products, ref Benchmark project, w/attch (faxed,

handwritten)


Clyde Consultants)



Angeles Region)

2231997 2/28/1991Ltr: Laboratory rpt for water sample, Benchmark

project, w/attch (faxed)R09: Pang, Kam (C K Y, Inc)


Consultants)

2231996 3/1/1991

Ltr: Request for discharge of uncontaminated

rainwater fr Benchmark remediation site into storm

drain, City of Industry


Consultants)



Angeles Region)

2231993 3/5/1991

Ltr: Confirms understanding of certain points in attch

A of ltr 2/13/91 fr Regional Board as discussed at

2/19/91 meeting, ref Benchmark RA program


Consultants)



Angeles Region)

2231994 3/5/1991 TL: __ (faxed, handwritten)



Angeles Region)


Consultants)

2231990 3/8/1991TL: Quarterly groundwater monitoring rpt -

Benchmark Technology site, City of IndustryR09: Clark, John (T R W, Inc)



Angeles Region)

2231991 3/8/1991


status review meeting on 3/8/91 with Regional Board,

w/marginalia


Page 15 of 88






2231992 3/8/1991 Sign-in sheet for 3/8/91 TRW/Benchmark meeting

2231988 3/18/1991

Memo: Transmits sketch of chrome-stained soil

excavation & laboratory data sheet for Benchmark

site, w/attchs (faxed, handwritten)


Consultants)



Angeles Region)

2231987 3/19/1991

Ltr: Transmits business card for ID Environmental

Assoc (IDEA) & requests that IDEA be included on

mailings re soil & groundwater investigation at

Monadnock Co in City of Industry, w/o attch

R09: Mulligan, Steve (I D

Environmental Assoc, Inc)



Angeles Region)

2231985 3/22/1991



Board, w/marginalia & handwritten notes


2231986 3/27/1991

Ltr: Woodward-Clyde Consultants' efforts to obtain

access for well installation on West Coast Sand &

Gravel property at 225 S Turnbull Canyon Rd, City of

Industry, opposite Benchmark site at 200 S Turnbull

Canyon Rd, City of Industry


Clyde Consultants)



Angeles Region)

2231983 4/5/1991


status review meeting on 4/5/91 with Regional Board,

w/maps re chrome sampling locations


2231984 4/5/1991

Sign-in sheet for Benchmark remedial action program

project status review meeting on 4/5/91 with Regional

Board (TRW/Benchmark)

2231982 4/23/1991TL: Confirmation sampling plan at Benchmark site, City

of Industry


Consultants)



Angeles Region)

26067 5/19/1991Newsclip: Superfund site may yield water bonanza -

San Gabriel Valley basin cleanup eyed

R09: Flores, Laura (Long Beach Press

Telegram)

2231980 5/23/1991TL: Revised quarterly groundwater monitoring rpt, 1st

quarter 1991, w/marginalia

R09: Mulligan, Steve (C K Y

Environmental Services, Inc)



Angeles Region)

2231979 6/18/1991TL: Quarterly groundwater monitoring rpt, 2nd quarter

1991R09: Kwan, Joseph (T R W, Inc)



Angeles Region)

Page 16 of 88






2231989 6/26/1991

Ltr: Excavation & confirmation sampling of chromium-

impacted soil at Benchmark site, w/attchs & fax TL to

Regional Board's T Rodgers re beginning backfilling

R09: Razmdjoo, Mehrshad (Woodward-

Clyde Consultants)R09: Kwan, Joseph (T R W, Inc)

2231978 7/3/1991Memo: Transmits 8 VES stockpile testing results, ref

stockpiles #32, 31, 30..., w/attchs (faxed, handwritten)R09: Kwan, Joseph (T R W, Inc)



Angeles Region)

2231977 7/10/1991

Memo: Comments on fax received 6/26/91 providing

confirmation sampling data & requesting for

permission to commence backfilling, ref Benchmark

confirmation sampling at general chromium sump

area, w/marginalia



Angeles Region)

R09: (File)

2234113 9/11/1991



Board, w/marginalia & handwritten notes


2231976 9/23/1991

Ltr: Review of rpt of waste discharge filed on 9/18/91

to discharge up to 2,000 cubic yards of chromium-

contaminated soil at Puente Hills Landfill

R09: Lewis, John (CA Regional Water


Region)


Consultants)

2231975 9/26/1991Ltr: Laboratory rpt for water samples, project

Benchmark, w/attchsR09: Pang, Kam (C K Y, Inc)


Consultants)

2231974 10/4/1991

Ltr: Request for permission to discharge 18,000 gallons

of water stored at Benchmark site, 200 S Turnbull

Canyon Rd, City of Industry, ref permit #7698B


Consultants)



Angeles Region)


info, 1991

2192395 10/10/1991Table re phase 3 site assessment, water elevations at

monitoring wells

2231972 10/18/1991



Board, w/marginalia


2231970 10/24/1991

Ltr: Request for approval to remove crushed concrete,

ref Benchmark site, City of Industry, w/attchs & fax TL

10/25/1991




Angeles Region)

Page 17 of 88






2231971 10/25/1991 Memo: Transmits STLC results, w/attch (faxed) R09: Kwan, Joseph (T R W, Inc)



Angeles Region)

2231969 11/12/1991

Ltr: Response to request for waiver of discharge

permit for 18,000 gallons of water stored at former

Benchmark Technology facility, 200 S Turnbull Canyon

Rd, City of Industry, ref CAO #89-034



Region)


5625 1/10/1992

Data validation rpt: Case #LV1S17, memo #5, site ID

#27, SAS anions analysis, sample #LV1S17-01 through

LV1S17-18, w/TL fr V Taylor to W Praskins, 1/10/92

R09: Gordon, Barbara (I C F

Technology, Inc)

2231965 1/29/1992TL: Quarterly groundwater monitoring rpt, 4th quarter

1991R09: Sullivan, Amy (T R W, Inc)



Angeles Region)

2231967 2/4/1992

Ltr: Request for authorization to dispose of 2,200 cubic

yards of copper-impacted soil at Bailard Landfill, ref

Benchmark soil remediation program, w/o permit

application & results of laboratory analysis


R09: Gonzales, Juan (CA Regional


Angeles Region)

2231968 2/7/1992

Application for facility permit/waste discharge, ref

2,200 cubic yards of treated soil fr copper soil

stabilization process, w/env addressed to P Chandler




Angeles Region)

2231966 2/28/1992

Ltr: Acknowledges receipt of ltr 2/26/92 requesting

approval for disposal of treated contaminated soil fr

Benchmark site at Bailard Landfill, ref Benchmark site,

200 S Turnbull Canyon Rd, City of Industry

R09: Kou, Jose (CA Environmental

Protection Agency - Dept of Toxic

Substances Control)

R09: Pennington, Douglas (T R W,

Inc)

2231964 3/26/1992

Ltr: Request for authorization to dispose of 1,000 cubic

yards of copper-impacted soil treated to below 25

mg/l limit for soluble threshold limit concentrations

(STLC), ref permit issued on 2/19/92, w/permit

application & results of laboratory analysis


R09: Gonzales, Juan (CA Regional


Angeles Region)

Page 18 of 88






2231963 3/30/1992TL: Quarterly groundwater monitoring rpt, 1st quarter

1992R09: Sullivan, Amy (T R W, Inc)



Angeles Region)

2234081 5/1/1992Rpt of sump closure at Benchmark facility, City of

IndustryR09: (Woodward-Clyde Consultants) R09: (T R W, Inc)

2231962 5/12/1992

Ltr: Transmits rpt of sump closure at Benchmark

facility, City of Industry, ref closure permit #7698B,

w/o attch


Consultants)

R09: Hajialiakbar, Bahman (Los

Angeles County - Dept of Public

Works)

2231961 7/30/1992

TL: Quarterly groundwater monitoring rpt, 2nd quarter

1992 - Benchmark remediation site, 200 S Turnbull






Angeles Region)

2231800 8/4/1992

Ltr: Response to ltr 7/22/92 fr Regional Board to TRW

re workplan for offsite groundwater investigation at

Benchmark Technology site, City of Industry, ref phase

5 workplan approval


Clyde Consultants)



Angeles Region)

2231799 8/19/1992

Ltr: Discharge of mud slurry generated fr exploratory

borehole installation activities at Flagstaff Ave, City of

Industry, ref TRW/Benchmark project, w/laboratory

rpt

R09: Sullivan, Amy (T R W, Inc)



Angeles Region)

2231798 8/25/1992TL: Health & safety plan for Benchmark's RA program

in City of Industry dated 7/22/92

R09: Gwinn, Jeffrey (Woodward-Clyde

Consultants)



Angeles Region)

2231797 10/16/1992

Ltr: Transmits & requests for review on rpt of soil

investigations & remediation, Benchmark Technology

site, City of Industry, w/o attchs




Angeles Region)

2231795 1/4/1993

TL: Quarterly groundwater monitoring rpt, 4th quarter







Angeles Region)

2231796 1/4/1993

TL: Quarterly groundwater monitoring rpt, 3rd quarter







Angeles Region)

18771 1/14/1993Technical memo: Area 6 monitoring well installation &

sampling, San Gabriel area 6 RIR09: (C H 2 M Hill, Inc)


Agency - Region 9)

2231794 1/21/1993

Ltr: Disposal of drilling mud, drill cuttings &

development water, ref Benchmark off-site

investigation, City of Industry [CAO 84-034]



Angeles Region)


Page 19 of 88






11650 2/18/1993

Ltr: Notification of Puente Valley potential responsible

party (PRP) meeting on 3/2/93 in S El Monte, w/o

attch

R09: Ramsey, Phillip (Environmental


R09: Lee, Will (San Gabriel Valley

Economic Council)

2234079 3/1/1993

Quarterly groundwater monitoring rpt, 1st quarter



R09: (I D Environmental Assoc, Inc) R09: (T R W, Inc)

1186 4/8/1993Interim RI/FS statement of work (SOW), Puente Valley

OUR09: (C H 2 M Hill, Inc)


Agency - Region 9)

2231792 5/24/1993

TL: Quarterly groundwater monitoring rpt, 1st quarter





R09: Chandler, Phil (CA Regional


Angeles Region)

14668 5/26/1993

Draft Puente Valley administrative consent order

(AOC) for RI/FS, ref data collection & evaluation rpt

4/8/93, SOW 4/8/93 & 58 special notice ltrs 5/26/93

R09: (Environmental Protection Agency

- Region 9)

13542 7/26/1993

Ltr: Transmittal of Puente Valley Steering Committee

members list as of 7/22/93 & request for 30-day

extension to submit good faith offer to conduct RI/FS,

w/attch

R09: Walter, Robert (Puente Valley

Steering Committee), R09: (T R W, Inc)



610 8/2/1993

Ltr: Transmittal of comments by Puente Valley

Technical Committee on interim RI/FS draft statement

of work (SOW) dated 4/8/93, Puente Valley OU,

w/attch

R09: Kwan, Joseph (Puente Valley




611 8/10/1993

Ltr: Transmittal of Puente Valley Technical

Committee's proposed modifications to interim RI/FS

draft statement of work (SOW) dated 4/8/93, w/attch





13647 8/20/1993

Ltr: Clarification on EPA's position on major RI

requirements for Puente Valley OU that need

immediate settlement


Protection Agency - Region 9)R09: Kwan, Joseph (T R W, Inc)

2231793 8/20/1993

TL: Quarterly groundwater monitoring rpt, 2nd quarter



R09: (T R W, Inc)

R09: Chandler, Phil (CA Regional


Angeles Region)

Page 20 of 88






402 8/25/1993

Ltr: Transmittal of additional comments on EPA's

Puente Valley OU interim RI/FS draft statement of

work (SOW) as indicated at meeting 8/24/93, w/attch





2231790 8/30/1993

Ltr: Informs of transmittal of copy of NPDES permit

application for TRW groundwater treatment facility at

200 S Turnbull Canyon Rd, City of Industry to Permits

Branch of EPA, ref NPDES #0063223



Angeles Region)


2231791 8/30/1993

Ltr: Transmits copy of NPDES permit application for

TRW groundwater treatment facility at 200 S Turnbull

Canyon Rd, City of Industry, ref NPDES #0063223, w/o

attch



Angeles Region)


Agency - Region 9)

9645 9/1/1993Ltr: Transmittal of Puente Valley Steering Committee

members list as of 9/1/93, w/attch





394 9/3/1993

Ltr: Transmittal of unilateral administrative order

(UAO) #93-23 for partial RI to Dubois/Diversey & GOE

Engineering, w/attch & mail receipt #P389-854-801

R09: Zelikson, Jeff (Environmental

Protection Agency - Region 9)R09: Gantz, Harry (Diversey Corp)

404 9/3/1993

Ltr: Transmittal of Puente Valley PRP Technical

Committee's proposed modifications to EPA's draft

SOW 4/8/93, w/redlined SOW 9/3/93





25660 9/3/1993Unilateral administrative order for partial RI, docket

#93-23, w/TL 9/3/93 to H Gantz fr K Takata



32651 9/3/1993

Ltr: Transmittal of unilateral administrative order

(UAO) #93-23 for partial RI in Puente Valley OU, w/o

attch, w/mail receipt #P389-854-800



R09: Parker, Richard (G O E

Engineering Co, Inc)

9646 9/10/1993

Ltr: Expression of shock that review of redlined SOW

showed Puente Valley PRPs continued to seek to

modify EPA's objectives of interim RI/FS



R09: Krill, Jr, John (Kirkpatrick &

Lockhart (Attorneys)), R09: Naifeh,

Bill (McKinney, Stringer & Webster

(Attorneys)), R09: Walter, Robert (T

R W, Inc)

Page 21 of 88






13646 9/10/1993Ltr: Comments on redlined SOW for Puente Valley

interim RI/FS 9/3/93




Steering Committee), R09: (T R W,

Inc)

2231786 9/14/1993


Board, Benchmark Holding Group, Woodward-Clyde

(re Benchmark Technology site)

19624 9/16/1993Ltr: Transmittal of revised redlined Puente Valley RI/FS

SOW, w/attch





2231784 9/21/1993

Ltr: Interim remedial action review - Benchmark

Technology site, City of Industry, w/marginalia re file #

now 102.0007 [CAO #89-034, file #86-22]



Angeles Region)


Holding Group), R09: Kwan, Joseph

(T R W, Inc)

2231785 9/21/1993

Ltr: Interim remedial action review - Benchmark

Technology site, City of Industry, w/marginalia re file #

now 102.0007 [CAO #89-034, file #86-22, faxed

9/28/93 by McDermott, Will & Emery]



Angeles Region)


Holding Group), R09: Kwan, Joseph

(T R W, Inc)

471 9/30/1993

Puente Valley RI/FS administrative consent order,

w/attch A, interim RI/FS SOW by CDM dated 9/30/93

& attch B, map of Puente Valley study area (RI/FS

start)


- Region 9)

2231783 10/4/1993TL: Quarterly groundwater monitoring rpt, 3rd quarter

1993 - Benchmark remediation site, City of Industry





Angeles Region)

2096360 10/8/1993Newsclip: Firms to fund pollution tests - officials hail

major step toward cleaning up Superfund site

R09: Eames, Steven (San Gabriel Valley

Tribune)

2096362 10/8/1993Newsclip: Investigaran la contaminacion del agua en

San Gabriel (in Spanish)R09: (La Opinion (Newspaper))

2096368 10/8/1993

Newsclip: Companies bow to EPA on San Gabriel

cleanup (44 companies to reimburse EPA for future

oversight costs)

R09: (Los Angeles Times (Newspaper))

2096369 10/8/1993Newsclip: EPA, companies agree to landmark

groundwater pact - companies agree to pay for testing

R09: Eames, Steven (San Gabriel Valley

Tribune)

Page 22 of 88






2231782 10/12/1993

Ltr: Transmits & requests for signature on declaration

on ltr 9/21/93 fr P Chandler re interim remedial action

review, ref Adelaida Land & Cattle Co vs Benchmark

Holdings Group, ref CAO #89-034, w/attchs &

marginalia

R09: Price, Stuart (McDermott, Will &

Emery (Attorneys))



Angeles Region)

15288 10/21/1993

Ltr: Notification of intent of Diversey Corp to gain

membership in Puente Valley Steering Committee,

w/proposed modifications to installation of well

cluster MW6-3 & ltr 10/21/93 to J Rosenbloom

R09: Dragna, James (McCutchen,

Doyle, Brown & Enersen (Attorneys))



13616 10/22/1993

Ltr: Notification that consulting firm Camp Dresser &

McKee Inc has been retained to perform Puente Valley

RI/FS





2096373 10/28/1993

Newsclip: Uncertainty over costs for cleanup -

companies unsure of long-term costs, w/photo of

Lansco

R09: Giberson, Mark (Los Angeles

Times (Newspaper))

15275 10/29/1993

Ltr: Notification of intent of Diversey Corp to comply

with UAO issued by EPA 9/3/93, w/proposed

modifications to installation of well cluster MW6-3 &

fax TL 10/29/93 fr K Caffee to M Klaiman

R09: Dragna, James (McCutchen,

Doyle, Brown & Enersen (Attorneys))



13615 11/2/1993

Ltr: Expression of concerns re methodology &

conclusions in draft risk assessment & request for

meeting prior to EPA finalizing document





2231781 11/17/1993

Ltr: Request for revision of quarterly groundwater

monitoring program - Benchmark Technology Inc, 200

S Turnbull Canyon Rd, City of Industry, w/fax TL

(incomplete, p 1 only)


Clyde Consultants)



Angeles Region)

409 11/23/1993

Ltr: Response to ltr 11/2/93 fr R Walter to J Zelikson re

Puente Valley Steering Committee's risk assessment

critique, w/critique



13648 11/23/1993Ltr: Initial review of Puente Valley Steering

Committee's interim RI/FS planning documents



Page 23 of 88






14367 12/6/1993

Ltr: Summary of major issues re preliminary baseline

risk assessment (PBRA) & FS, Puente Valley OU, ref ltr

11/23/93 fr EPA to J Kwan, w/attchs


Steering Committee), R09: (Camp

Dresser & McKee, Inc)




1993 - Benchmark remediation site, City of Industry



R09: Kaumeyer, Rick (CA Regional


Angeles Region)

225 1/7/1994

Ltr: Transmittal of 1st monthly status rpt, 11/93-12/93,

Puente Valley OU RI/FS, w/rpt & attch A, interim

shallow groundwater monitoring network

R09: Kwan, Joseph (T R W, Inc)R09: Ramsey, Phillip (Environmental


243 1/7/1994

Memo: Transmittal of EPA's Puente Valley operable

unit interim RI/FS planning document review ltr

1/7/94 fr P Ramsey to J Kwan, w/attch



14326 1/10/1994


interim shallow groundwater monitoring network

workplan, w/attch

R09: Chamberlin, David (Camp Dresser

& McKee, Inc)



14406 1/14/1994

Ltr: Acknowledgment of receipt of EPA ltr 1/14/94 &

response to concerns re delay on part of Puente Valley

Steering Committee (PVSC) in addressing EPA

comments to RI/FS planning docs





15303 1/21/1994

Ltr: Notification that Puente Valley Steering

Committee's interim shallow groundwater monitoring

network workplan 1/10/94 has been rejected



14164 1/31/1994

Ltr: Transmittal of Puente Valley interim RI/FS docs,

including workplan, field sampling plan, etc, revised fr

10/29/93 draft version, w/o attchs


& McKee, Inc)



91 2/1/1994 Response summary, Puente Valley OU interim RI/FS R09: (Camp Dresser & McKee, Inc)R09: (Puente Valley Steering

Committee)

92 2/1/1994

Workplan, Puente Valley OU interim RI/FS, w/attch 1,

additional 53 wells, appendices A, project

management plan & B, workplan/SOW cross reference

R09: (Camp Dresser & McKee, Inc)R09: (Puente Valley Steering

Committee)

Page 24 of 88






93 2/1/1994Field sampling plan, Puente Valley OU interim RI/FS,

w/attchsR09: (Camp Dresser & McKee, Inc)

R09: (Puente Valley Steering

Committee)

94 2/1/1994Quality assurance project plan, Puente Valley OU

interim RI/FSR09: (Camp Dresser & McKee, Inc)


Committee)

95 2/1/1994Data management plan, Puente Valley OU interim

RI/FSR09: (Camp Dresser & McKee, Inc)


Committee)

96 2/1/1994 Health & safety plan, Puente Valley OU interim RI/FS R09: (Camp Dresser & McKee, Inc)R09: (Puente Valley Steering

Committee)

97 2/1/1994Summary rpt, San Jose Creek surface

water/groundwater interactionR09: (Camp Dresser & McKee, Inc)


Committee)

14327 2/14/1994


revised interim shallow groundwater monitoring

network workplan (initial date 1/10/94, revised date

2/14/94), w/attch


& McKee, Inc)



19334 2/17/1994

Ltr: Transmittal of replacement table 7-2 omitted fr

Puente Valley OU interim RI/FS QAPP submitted on

2/1/94, w/attch

R09: Alai, Jenifer (Camp Dresser &

McKee, Inc)



14329 2/24/1994Ltr: Transmittal of monthly status rpt 1/94, Puente

Valley OU RI/FS, w/attch





14334 2/25/1994

Ltr: Acknowledgment of receipt of & comments on

docs dated 11/24/93 submitted in response to UAO

#93-23, including draft field sampling plan, etc,

w/attch 1, w/o mail receipt #P765-057-274


Protection Agency - Region 9)R09: Rabkin, Susan (Diversey Corp)

15003 3/1/1994Preliminary baseline risk assessment, Puente Valley

OUR09: (C H 2 M Hill, Inc)


Agency - Region 9)

15348 3/4/1994

Ltr: Comments on Puente Valley Steering Committee's


network workplan dated 2/14/94



53 3/9/1994

Ltr: Response to EPA ltr 3/4/94 re EPA review of


network (ISGMN) workplan 2/14/94





Page 25 of 88






14204 3/11/1994

Ltr: Response to ltr 3/9/94 fr J Kwan & clarification of

misperceptions re role of workplan in overall RI/FS,

role of EPA review of workplan, etc





Inc)

14973 3/18/1994

Interim shallow groundwater sampling workplan for

cluster well siting, Puente Valley Steering Committee,

w/TL 3/18/94 to P Ramsey fr D Chamberlin

R09: (Camp Dresser & McKee, Inc)R09: (Environmental Protection

Agency - Region 9)

14335 3/21/1994

Ltr: Transmittal of docs submitted in response to EPA

ltr 2/25/94, including final field sampling plan, final

quality assurance project plan (QAPP) & final health &

safety plan, ref well cluster 6-3, w/attchs & response

summaries [UAO #93-23]

R09: Freudenberger, Richard

(Environmental Strategies Corp)




1994





Angeles Region)

2232616 4/12/1994 TL: Groundwater RA plan R09: (Woodward-Clyde Consultants)



Angeles Region)

14974 5/5/1994

Ltr: Transmittal of Puente Valley Steering Committee's

interim shallow groundwater sampling for cluster well

siting rpt 5/5/94, w/attch


& McKee, Inc)



15290 5/17/1994

Ltr: Acknowledgment of receipt of final field sampling

plan 3/21/94, final quality assurance project plan

(QAPP) & final health & safety plan submitted in

response to UAO #93-23 & request for modification of

FSP, w/attchs 1, comments & attch 2, checklist



15349 5/18/1994Ltr: Evaluation of San Jose Creek subdrain as

contaminant migration pathway





Page 26 of 88






14975 5/19/1994

Ltr: Transmittal of & request for comments on draft

interim shallow groundwater monitoring well network

workplan (ISGMWNWP) 5/19/94, w/attch, w/o

oversize maps


& McKee, Inc)



15359 5/19/1994

Ltr: Responses to 4/17/94 EPA comments on Puente

Valley Steering Committee's revised RI/FS planning

documents (workplan & field sampling plan),

w/redlined pages, w/o oversize maps


& McKee, Inc)



15360 5/19/1994

Ltr: Responses to 4/17/94 EPA comments on PVSC

revised RI/FS planning documents (workplan & field

sampling plan) - figure #1-2, well location map, #2-1,

site existing well locations, #3-1, facility map, etc

(oversize maps only)


& McKee, Inc)



20591 5/19/1994

Ltr: Transmittal of & request for comments on draft

interim shallow groundwater monitoring well network

workplan (ISGMWNWP) (oversize map only - figure #2-

1, groundwater monitoring well network)


& McKee, Inc)



15224 5/20/1994

Ltr: Acknowledgment of receipt of ltr 5/19/94 fr

Puente Valley Steering Committee & notification that

no consensus has been reached & PVSC's proposed

San Jose Creek sampling is without merit



R09: Krill, Jr, John (Kirkpatrick &

Lockhart (Attorneys)), R09: Walter,

Robert (T R W, Inc)

15358 5/23/1994

Ltr: Transmittal of figure 3-1A, background OVA

sampling grid & figure 3-1B, BAT decision tree, ref red-

lined change-out pp in response to EPA comments on

revised Puente Valley OU interim RI/FS planning docs,

w/attchs


McKee, Inc)



15244 5/26/1994

Ltr: Expression of disappointment that Puente Valley

Steering Committee initiated on 5/24/94 unapproved

weep hole & surface water sampling at San Jose Creek

R09: Lau, Nathan (Environmental


Page 27 of 88






2192346 6/1/1994

Aerial Photos (19): NAPP (National Aerial Photography

Program), items #6858-90, 6858-91 to 6858-104,

#6862-124, 6862-125 to 6862-160, dates flown

5/31/94 & 6/1/94 (B&W, 9-1/2 in x 9-1/2 in)

R09: (US Geological Survey - National

Aerial Photography Program)

14964 6/2/1994

Ltr: Transmittal of revised field sampling plan (FSP) for

partial RI of monitoring well cluster 6-3, UAO 93-23 -

Diversey Corp, 15010 E Don Julian Rd, City of Industry,

w/attch & EPA comments





15357 6/9/1994

Ltr: Requirements to be incorporated into Puente

Valley RI/FS planning docs re San Jose Creek subdrain

evaluation, w/attch 1, San Jose Creek subdrain &

boring locations & mail receipt #P389-855-008



15356 6/20/1994

Ltr: Acknowledgment of receipt of ltr 6/9/94 fr EPA to

J Kwan re San Jose Creek subdrain evaluation &

request to invoke dispute resolution pursuant to

administrative consent order (AOC), docket #93-26,

w/potential meeting agenda & ltr 5/18/94 to P

Ramsey





15355 6/21/1994

Ltr: Review of Puente Valley OU interim RI/FS, interim

shallow groundwater sampling for cluster well siting

rpt 5/5/94, w/attch & mail receipt #P389-855-009



15353 6/28/1994

Ltr: Response to EPA requirements in ltr 6/9/94 for

Puente Valley Steering Committee to undertake coring

& manhole inspection program to evaluate presence

or absence of filter material beneath concrete channel

of San Jose Creek





2234069 7/1/1994

Quarterly rpt for groundwater monitoring, 2nd

quarter 1994, Benchmark remediation site, City of

Industry, w/marginalia

R09: (I D Environmental Assoc, Inc) R09: (T R W, Inc)

Page 28 of 88






15352 7/12/1994

Ltr: Scope of investigation & data analysis activities for

assessment of San Jose Creek subdrain as potential

contaminant migration pathway





15351 7/15/1994

Ltr: Transmittal of revisions to interim shallow

groundwater sampling for cluster well siting rpt

5/5/94, w/attchs


& McKee, Inc)



2232614 7/19/1994TL: Quarterly groundwater monitoring rpt, 2nd quarter

1994





Angeles Region)

15561 7/27/1994

GIS maps for VOC, PCE & TCE concentrations last

available sample (through 7/14/94), Puente Valley OU,

w/TL 7/27/94 fr J Harris to P Ramsey


15350 8/9/1994

Ltr: Review of Puente Valley OU revised RI/FS planning

docs (workplan/FSP revision, monitoring well network

workplan amendment), w/attch & mail receipt #P389-

855-010



15291 8/12/1994Ltr: Proposal of alternative locations for monitoring

well cluster MW6-3, w/figure 1, potential locations





15292 8/18/1994

Ltr: Approval of final field sampling plan 6/2/94 &

other Puente Valley OU partial RI planning docs, ref

UAO #93-23



14673 8/25/1994Ltr: Request for approval to install 4-inch diameter

well casing instead of 6-inch in FSP


& McKee, Inc)



14634 8/29/1994

Ltr: Transmittal of responses to 8/9/94 EPA comments

on Puente Valley Steering Committee's revised RI/FS

planning docs (workplan & FSP, etc), w/attchs, w/o

oversize maps


& McKee, Inc)



14635 8/29/1994


on PVSC revised RI/FS planning docs (workplan & FSP,

etc) - (oversize maps only - figures #3-1, Puente Valley

facility map, #2-1A & #2-1B, groundwater monitoring

well network map)


& McKee, Inc)



Page 29 of 88






14636 9/7/1994

Ltr: Transmittal of & request to replace revised change-

out p 2-1 of workplan received by EPA 8/30/94,

w/attch


McKee, Inc)



14677 9/8/1994

Ltr: Transmittal of & request for review on draft

revisions to sections 2.1.1, 2.1.2.2, 2.1.2.6 & 3.1.3.2 of

final field sampling plan (FSP) for monitoring well

cluster MW6-3, ref UAO #93-23 & comment ltr fr EPA

dated 8/18/94, w/attchs





14674 9/12/1994

Ltr: Response to ltr 8/25/94 fr Camp, Dresser & McKee

& notification of approval of request for option to

construct monitoring wells with 6-inch or 4-inch

diameter well casing & well screen



15895 9/12/1994

Ltr: Request for meeting to discuss City of Industry's

joint-planning approach towards groundwater cleanup

in Puente Valley

R09: Ferrero, John (City of Industry -

Office of the Mayor)

R09: Marcus, Felicia (Environmental


15294 9/15/1994

Ltr: Transmittal of & request for review on draft figure

2-1, shallow groundwater contaminant distribution &

figure 2-2, proposed location of MW6-3, Puente Valley

OU partial RI, monitoring well cluster MW6-3,

w/attchs





15209 9/21/1994

Ltr: Notification of selection of, on behalf of Puente

Valley Steering Committee, subcontractors Terra Tech

Laboratories & Beylik Drilling Inc for RI/FS activities


McKee, Inc)



2232613 9/26/1994

Ltr: General national pollutant discharge elimination

system permit & waste discharge requirements, well

head water treatment system, ref well sites at 200 S

Turnbull Canyon Rd, City of Industry, w/attch [NPDES

#CAG994150]



Angeles Region)


15210 9/27/1994Ltr: Transmittal of monthly status rpt 2/94-9/94,

Puente Valley OU RI/FS, w/attch


& McKee, Inc)



15042 9/30/1994

Ltr: Transmittal of 8 items for 10/6/94 meeting re City

of Industry's plans for treatment system for Puente

Valley groundwater, w/attchs

R09: Burnett, Carl (City of Industry -

Urban-Development Agency)

R09: Takata, Keith (Environmental


Page 30 of 88






2234076 10/4/1994TL: Quarterly groundwater monitoring rpt, 3rd quarter

1994



R09: Nupen, Eric (CA Regional Water


Region)

2232612 10/7/1994

Ltr: Acknowledges receipt of groundwater RA plan

review comments dated 9/28//94 & informs that TRW

will incorporate recommendations into Benchmark

groundwater remediation program




Region)

16861 10/10/1994

Memo: Trip rpt, EPA oversight of Puente Valley OU

field activities at monitoring well MW 6-6 on 10/5/94

(faxed)

R09: Lovenburg, John (C H 2 M Hill, Inc)R09: Ramsey, Phillip (Environmental


16862 10/12/1994

Puente Valley monitoring wells, proposed MW6-6

perforated intervals & sieve analysis plot, w/fax TL

10/12/94 fr S Wallin to P Ramsey

R09: (Camp Dresser & McKee, Inc)

16866 10/14/1994Memo: Trip rpt, EPA oversight of Puente Valley OU

field activities at monitoring well MW 6-6 on 10/11/94R09: Lovenburg, John (C H 2 M Hill, Inc)



15821 10/27/1994

Ltr: Expression of appreciation for ltr 9/14/94 fr E

Torres re City of Industry's proposal to clean up

contaminated groundwater in Puente Basin, ref

meeting on 10/6/94, w/o attch



R09: Torres, Esteban (US House of

Representatives)

15822 10/27/1994

Ltr: Expression of appreciation for ltr 9/12/94 fr Mayor

J Ferrero re proposal to clean up contaminated

groundwater in Puente Valley, ref meeting on 10/6/94

with K Takata, et al



R09: Ferrero, John (City of Industry -

Office of the Mayor)




& McKee, Inc)



15204 10/31/1994Ltr: Approval of revised field sampling plan (FSP) for

Puente Valley OU MW6-3, ref UAO #93-23



15206 11/4/1994

Ltr: Proposed changes in drilling & BAT sampling

procedures at cluster well location MW6-5, Puente

Valley OU

R09: Wallin, Sharon (Camp Dresser &

McKee, Inc)



Page 31 of 88






15034 11/14/1994

Final quality assurance project plan (QAPP) for Puente

Valley OU partial RI, monitoring well cluster MW6-3 -

Diversey Corp, 15010 E Don Julian Rd, City of Industry,

w/TL to P Ramsey fr R Freudenberger 11/16/94

R09: (Environmental Strategies Corp) R09: (Diversey Corp)

15035 11/14/1994

Final field sampling plan (FSP) for Puente Valley OU

partial RI, monitoring well cluster 6-3 - Diversey Corp,

15010 E Don Julian Rd, City of Industry


16867 11/15/1994

Memo: Trip rpt #6, EPA oversight of Puente Valley OU

field activities at monitoring well MW 651 & MW 662

on 11/11/94






& McKee, Inc)



15202 12/9/1994

Ltr: Proposed changes in initial groundwater sampling

procedures at clusters MW6-6 & MW6-8, Puente

Valley OU

R09: Mahan, Lisa (Camp Dresser &

McKee, Inc)



16109 12/14/1994

Ltr: Request on behalf of Puente Valley Steering

Committee (PVSC) for NPDES special permit for

discharging well construction, development & purge

water generated as result of ongoing Puente Valley OU

interim RI, w/maps


McKee, Inc)



Region)

14719 12/15/1994

Ltr: Transmittal of data fr surface water & weephole

monitoring & sampling of San Jose Creek & shallow

groundwater sampling & monitoring of select adjacent

monitoring wells during 5/94-6/94, w/attchs





17013 12/22/1994

Ltr: Request for approval fr EPA's Quality Assurance

Management Section (QAMS) on drilling fluid additive

Drispac for Puente Valley OU RI/FS drilling program,

w/product info & material safety data sheet


McKee, Inc)






& McKee, Inc)



Page 32 of 88






15183 1/3/1995

Ltr: Cluster well MW654, proposed BAT sampling &

well completion depths, cluster well location MW64,

proposed drilling schedule & procedures, Puente

Valley OU RI/FS


McKee, Inc)



15186 1/5/1995

Ltr: Transmittal of EPA comments on Puente Valley OU

RI/FS groundwater monitoring well network workplan

& San Jose Creek scope of work (SOW), w/attch, w/o

mail receipt #P918-448-771



15897 1/6/1995

Memo: Trip rpt #12, EPA oversight of Puente Valley

OU field activities at monitoring well MW 653 & at

Suburban Water Systems production well SWS136-W1

on 12/28/94



16886 1/10/1995

Ltr: Update on status of site access for installation of

monitoring well cluster MW6-3 & notification that La

Victoria Foods decided not to allow access to property,

ref UAO #93-23 & intersection at 7th & Proctor Aves





16888 1/17/1995

Maps (2): City of Industry right-of-way near

intersection of 7th & Proctor Ave, location considered

for installation MW6-3, w/fax TL to P Ramsey fr S Desai

1/17/95 & marginalia re proposed location is

acceptable

16769 1/26/1995


OU field activities at monitoring well MW 641 on

1/24/95



16770 1/31/1995


OU field activities at production well SWS 123 on

1/27/95



16890 1/31/1995

Ltr: Update on status of site access for installation of

monitoring well cluster MW6-3 & info re groundwater

monitoring activities at Diversey property located at

15010 E Don Julian Rd, City of Industry, ref UAO #93-

23





Page 33 of 88









& McKee, Inc)



16892 2/6/1995

Ltr: Conditional approval of use of Drispac cellulose

fluid loss reducer (drilling fluid additive) in Puente

Valley OU, w/memos dated 1/9/95 & 1/24/95 fr M

Petersen to P Ramsey



R09: Wallin, Sharon (Camp Dresser

& McKee, Inc)

16893 2/7/1995

Ltr: Notification that EPA will not object if R Walter

elects to respond favorably to City of Industry request

that Puente Valley Steering Committee provide

analytical data pursuant to administrative order on

consent (AOC) 9/30/93




1994





Region)

16895 2/15/1995


on PVSC's 8/29/94 revised sections of planning docs

(workplan, field sampling plan, interim groundwater

monitoring well network workplan & San Jose Creek

SOW), w/attchs A-C, w/o oversize attchs


& McKee, Inc)



16896 2/15/1995


on PVSC 8/29/94 revised sections of planning docs

(oversize maps only) - figures 2-1A & 2-1B, ISGWMN

workplan, groundwater monitoring well network


& McKee, Inc)



16913 2/27/1995Ltr: Review of memo 2/17/95 fr CDM re cluster well

MW6-7 installation requirement, Puente Valley OU



16914 2/28/1995

Ltr: Transmittal of monthly status rpt 2/95, Puente

Valley OU RI/FS, w/attch & memo 2/27/95 fr CDM to P

Ramsey re revised RI/FS schedule


& McKee, Inc)



Page 34 of 88






19855 3/1/1995

Fact sheet: In a major step toward cleanup, EPA

identifies sources of groundwater contamination - EPA

clears more than 1,500 companies (#16)


- Region 9)

15188 3/3/1995

Ltr: Transmittal of EPA comments on Puente Valley OU

RI/FS planning documents, w/attch & handwritten

comment dated 3/8 expressing thanks fr Nate to Phil



16915 3/3/1995

Memo: Proposed changes to initial groundwater

sampling (MW65 cluster wells), w/fax TL dated 3/3/95

fr S Wallin to P Ramsey & J Lovenburg requesting

review


McKee, Inc)



16917 3/6/1995Ltr: Response to ltr 2/27/95 fr P Ramsey re cluster well

MW6-7 installation requirement, Puente Valley OU





16920 3/9/1995

Ltr: Response to ltrs 2/6/95 & 3/3/95 fr P Ramsey re

use of drilling fluid additive Drispac & transmittal of ltr

2/6/95 fr P Ramsey to S Wallin & quality assurance

management section (QAMS) memos dated 1/9/95 &

1/24/95, w/attchs


McKee, Inc)



16921 3/10/1995Ltr: Comments on Puente Valley OU RI/FS summary FS

dated 10/29/93, w/attchs



16931 3/20/1995

Ltr: Transmittal of, on behalf of Puente Valley Steering

Committee, draft SOW for installation of monitoring

well at location approved by EPA for monitoring well

cluster MW6-7, w/attch


& McKee, Inc)



16774 3/24/1995


OU field activities in San Jose Creek on 3/20/95,

w/attch



16933 3/27/1995

Ltr: Comments on 3/20/95 proposal fr CDM on behalf

of Puente Valley Steering Committee re installation of

monitoring well cluster MW6-7



Page 35 of 88






16934 3/27/1995

Ltr: Response to ltr 3/27/95 fr P Ramsey to J Kwan re

installation of monitoring well cluster MW6-7 &

notification that revised SOW will be submitted to P

Ramsey within 24 hours, w/fax TL 3/28/95





16935 3/28/1995

Ltr: Response to ltr 3/27/95 fr Puente Valley Steering

Committee to EPA re monitoring well cluster MW6-7 &

ltr 3/28/95 transmitting revised SOW for installation of

monitoring well MW6-7 prepared by CDM on behalf of

Steering Committee



16936 3/28/1995

Ltr: Transmittal of attch A, revised SOW for installation

of monitoring well MW6-7, Puente Valley Technical

Committee members list & Puente Valley Legal

Committee members list, w/attchs


& McKee, Inc)



22508 3/29/1995

Ltr: Transmittal of CLP-type data package, Puente

Valley OU RI/FS, for samples referenced in 1/95

monthly status rpt, w/attchs


McKee, Inc)



16939 3/30/1995Ltr: Transmittal of proposed aquifer testing program

plan, Puente Valley OU RI/FS, w/attch


& McKee, Inc)






& McKee, Inc)



16944 4/5/1995

Ltr: Approval of Puente Valley interim RI/FS schedule

modification & request for submittal of approved

planning documents, ref ltr 3/3/95 fr EPA to Puente

Valley Steering Committee



32652 4/11/1995Recipients of general notice of liability for San Gabriel

Valley sites, areas 1-4


- Region 9)

16946 4/13/1995

Ltr: Review of analytical data for initial water quality

sample collected fr well MW6-71, Puente Valley OU

RI/FS, w/attchs


McKee, Inc)



Page 36 of 88






16947 4/14/1995

Ltr: Conditional approval of aquifer testing program

proposal submitted on 3/30/95 by CDM on behalf of

Puente Valley Steering Committee



16951 4/19/1995

Ltr: Update on status of site access for monitoring well

cluster MW6-3 & schedule for installation of well

cluster, ref UAO #93-23, w/certificates of insurance





19510 4/19/1995Summary rpt, San Jose Creek surface

water/groundwater interactionR09: (Camp Dresser & McKee, Inc)


Committee)

19512 4/19/1995Puente Valley OU interim RI/FS workplan, w/o oversize

mapR09: (Camp Dresser & McKee, Inc)


Committee)

19515 4/19/1995

Puente Valley OU interim RI/FS workplan (oversize

maps only - figure #2-1, existing well locations, figure

#3-1, facility & boundary map & figure #6-1, RI/FS

cluster wells & production well locations)


19547 4/19/1995

Puente Valley Steering Committee interim

groundwater monitoring well network workplan

(IGMWNWP), w/o oversize maps


19548 4/19/1995

Puente Valley Steering Committee interim

groundwater monitoring well network workplan

(IGMWNWP) (oversize maps only - figures 2-1A & 2-

1B)


19549 4/19/1995Field sampling plan (FSP), Puente Valley OU interim

RI/FS, w/o oversize mapsR09: (Camp Dresser & McKee, Inc)


Committee)

19550 4/19/1995

Field sampling plan (FSP), Puente Valley OU interim

RI/FS (oversize maps only - figure #1-2, existing well

locations & figure #2-1, RI/FS cluster wells &

production well locations)


19803 4/20/1995

Ltr: Transmittal of final versions of Puente Valley OU

RI/FS project planning docs, including workplan, field

sampling plan (FSP), summary rpt re San Jose Creek

groundwater/surface water interaction, etc, w/o

attchs


& McKee, Inc)



Page 37 of 88






16983 4/21/1995Ltr: Evaluation of need for additional well at cluster

well MW6-6, Puente Valley OU RI/FS


McKee, Inc)



16878 4/27/1995

Ltr: Transmittal of groundwater level measurements

for monitoring wells, water level indicator calibration

data & well casing elevations - Diversey Corp, 15010 E

Don Julian Rd, City of Industry, w/o attchs




McKee, Inc)

16957 4/27/1995


field activities at monitoring well cluster MW6-31 on

4/27/95






& McKee, Inc)



19818 5/3/1995

Memo: Trip rpt #2, EPA oversight of monitoring well

cluster MW 6-3A installation for Puente Valley OU on

5/1/95



16959 5/9/1995

Ltr: Evaluation of Puente Valley OU docs prepared by

CDM on behalf of Puente Valley Steering Committee,

including evaluation of MW6-7-1 groundwater

analytical results, 4/13/95 & evaluation of need for

additional well at cluster well MW6-6, 4/21/95



16960 5/16/1995

Ltr: Response to ltr 5/9/95 fr EPA to J Kwan re need to

install 5th monitoring well at cluster MW6-6 & request

for dispute resolution per section 11 of administrative

consent order (AOC), docket #93-26






1995





Region)

Page 38 of 88






16961 5/17/1995

Ltr: Response to ltr 4/14/95 fr P Ramsey re aquifer

testing program, Puente Valley OU interim RI/FS &

submittal of proposal for disposal of groundwater

generated during aquifer testing activities, w/plates

57, 64 & 68 fr Stetson Engineers re VOC & nitrate


& McKee, Inc)



16695 5/22/1995

Data validation rpt: Case #R95S44, analysis low level

nitrate & nitrite in groundwater, 15 water samples,

SDG #SYF412-SYF426, Puente Valley OU, w/TL 5/22/95

fr J Eidelberg to P Ramsey

R09: Eidelberg, Joseph (Environmental


32616 5/23/1995

Data validation rpt: Case/SAS #R95S44, analysis RAP

low level volatiles, 15 water samples, SDG #SYF412-

SYF426, Puente Valley OU, w/TL 5/30/95 fr J Eidelberg

to P Ramsey



19106 5/24/1995Ltr: Request for waiver of NPDES permit requirements,

w/Post-it fax note to P Ramsey


& McKee, Inc)



Region)

16963 5/31/1995

Ltr: Notification that EPA & CA Dept of Toxic

Substances Control are willing to elevate "threshold"

VOC concentrations detected in Hydropunch samples

to 10 X MCL, ref ltr 5/9/95 fr EPA & ltr 5/16/95 fr

Puente Valley Steering Committee re cluster MW6-6



16964 5/31/1995

Ltr: Transmittal of ltr 11/26/90 fr EPA to R Ghirelli re

EPA previous spinner logging & wellhead sampling in

San Gabriel Valley sites, example of type of info

reviewed re ARAR compliance during RI/FS process,

w/o attch (unsigned)






& McKee, Inc)



16775 6/6/1995

Ltr: Transmittal of memo 5/9/95 fr R Bauer to P

Ramsey re review of Puente Valley data packages

submitted by CDM, w/attch



Page 39 of 88






19920 6/12/1995

Ltr: Confirmation of EPA approval of 475 to 485 foot

screened interval for monitoring well MW6-33 &

submittal of preliminary results fr hydropunch water

samples





19658 6/13/1995

Technical Memo #1, Puente Valley OU interim RI/FS, RI

cluster well installation & sampling, appendix B, w/o

oversize parts


19659 6/13/1995

Technical Memo #1, Puente Valley OU interim RI/FS, RI

cluster well installation & sampling, w/appendix B - 20

well logs (oversize parts only)


19660 6/13/1995Technical memo #1, Puente Valley OU interim RI/FS, RI

cluster well installation & samplingR09: (Camp Dresser & McKee, Inc)


Committee)

19661 6/13/1995Technical memo #1, Puente Valley OU interim RI/FS,

FS rptR09: (Camp Dresser & McKee, Inc)


Committee)

19717 6/13/1995Ltr: Transmittal of technical memos #1 (RI TM & FS

TM), Puente Valley OU interim RI/FS, w/o attch


& McKee, Inc)




cluster well installation & sampling, rpt & appendix AR09: (Camp Dresser & McKee, Inc)


Committee)

19820 6/14/1995

Ltr: CA Dept of Toxic Substances Control concurs with

EPA position re dispute with Puente Valley Steering

Committee re use of hydropunch screening tool

R09: Sorensen, Mike (CA





19921 6/14/1995

Ltr: Response to ltr 5/31/95 fr M Klaiman to R Walter

& notification that compliance with NPDES permitting

requirements under Clean Water Act, potential ARAR,

is not practicable during pumping tests in Puente

Valley OU


& McKee, Inc)



19718 6/15/1995

Ltr: Transmittal of EPA well cluster MW6-6 formal

dispute position statement, pursuant to Puente Valley

OU administrative order on consent (AOC), docket #93-

26, w/attchs



19924 6/15/1995

Ltr: Formal statement fr Puente Valley Steering

Committee re dispute resolution, monitoring well

MW6-6





Page 40 of 88






19927 6/20/1995

Ltr: Response to ltr 6/14/95 fr D Chamberlin re

discharge of pumping test water, Puente Valley OU &

notification that more formal response to ltr will be

forthcoming, w/fax TL & activity rpts



R09: Chamberlin, David (Camp

Dresser & McKee, Inc), R09: Walter,

Robert (T R W, Inc)

19931 6/27/1995

Ltr: Notification that EPA staff intends to recommend

to EPA management to accept substantive compliance

of discharge requirements & not enforce requirements

in negotiated administrative consent order (AOC) re

obtaining permit for discharge




Dresser & McKee, Inc), R09: Kwan,

Joseph (T R W, Inc)

19340 6/30/1995Ltr: Response to ltr 6/27/95 fr P Ramsey re pumping

test at MW6-5 & MW6-6, Puente Valley OU


& McKee, Inc)



19341 6/30/1995 Ltr: Transmits 6/95 monthly status rpt w/enclR09: Chamberlin, David (Camp Dresser

& McKee, Inc)



19342 6/30/1995

Ltr: Written decision pursuant to section 11 (dispute

resolution) of administrative order on consent (AOC)

re well cluster MW6-6, w/fax TL to R Walter fr M

Klaiman 7/3/95



19933 7/6/1995

Ltr: Response to ltr 6/30/95 fr CDM to EPA re disposal

of RI-generated waste during pumping test at MW6-5

& MW6-6, Puente Valley OU



19719 7/7/1995

Ltr: Acknowledgment of receipt of ltr 6/30/95 fr J

Zelikson to Puente Valley Steering Committee &

notification of intent to install additional well at

cluster well MW6-6





2224412 7/12/1995Soil gas survey - E W Smith Chemical Co, City of

IndustryR09: (Hydro Geo Chem, Inc)

R09: (Atkins Environmental HELP,

Inc)

19936 7/20/1995

Ltr: Notification that EPA approves treatment &

surface water sampling proposed for aquifer testing at

well cluster MW6-6, Puente Valley OU, ref proposal

7/20/95 fr Puente Valley Steering Committee for

disposal of aquifer testing water



Page 41 of 88






19937 7/20/1995

Ltr: Clarification of mutual understanding of & request

for concurrence on procedures to be implemented re

disposal of aquifer pumping test water for well MW6-

63 drilled as part of Puente Valley RI/FS SOW





19939 8/1/1995

Ltr: Issues discussed at meeting 7/28/95 between EPA

& Puente Valley Steering Committee re RI technical

memo #1 & FS technical memo #1, w/proposed

remedial action objectives (RAO)





2234077 8/1/1995

Quarterly groundwater monitoring rpt 8/95 - former


Rd, City of Industry, w/marginalia re 4/95

R09: (T R W Environmental & Safety

Laboratory)R09: (T R W, Inc)

19941 8/7/1995

Ltr: Review of RI technical memo #1 dated 6/13/95, FS

technical memo #1 dated 6/13/95 & revised RAO

(remedial action objective) transmitted on 8/1/95,

w/attch A, EPA comments on RI & FS TM #1, Puente

Valley OU interim RI/FS dated 8/3/95



19723 8/16/1995

Ltr: Transmittal of Puente Valley Steering Committee's

proposed schedule for remaining RI/FS activities,

w/attch





25149 8/18/1995


OU field activities at monitoring well MW662 on

8/23/95



32619 8/18/1995


OU field activities at monitoring wells MW665 &

MW654 on 8/17/95



22913 8/24/1995


field activities at monitoring well cluster MW63 on

8/23/95



2234078 9/1/1995

Quarterly groundwater monitoring rpt 9/95 - former


Rd, City of Industry, w/marginalia re 7/95



Page 42 of 88






21306 9/19/1995

Technical memo #2, Puente Valley OU interim RI/FS, RI

aquifer testing program, water quality sampling & San

Jose Creek study, rpt & appendices A & B, w/ltr

9/18/95 fr CDM to P Ramsey, w/o oversize maps


Committee)

21307 9/19/1995



Jose Creek study rpt, w/appendices A & B (oversize

maps only - plates 1-3)


Committee)

21308 9/19/1995



Jose Creek study, appendix C, analytical rpts, COCs &

data validation, w/ltr 9/12/95 to S Wallin fr D Burley

(attch only)


Committee)

21305 9/20/1995

TL: Table 3-12 & appendix C to technical memo #2,

Puente Valley OU interim RI/FS, RI aquifer testing

program, water quality sampling & San Jose Creek

study, w/table, w/o appendix C


McKee, Inc)



20018 9/26/1995

Ltr: Request that remedial action objectives (RAOs) be

resolved in timely manner so that acceptable RI/FS can

be submitted by Puente Valley Steering Committee

before deadline



21106 9/28/1995Ltr: Transmittal of monthly status rpt for 9/95, Puente



& McKee, Inc)



32618 9/28/1995

Data validation rpt: Case/SAS #R95S65, analysis nitrate

& nitrite as nitrogen by ion chromatography, 15

groundwater samples, SDG #SYG859-SYG873, Puente

Valley OU, w/TL 9/29/95 fr J Eidelberg to P Ramsey



21107 10/2/1995

Ltr: Approval of pumping test proposal dated 9/26/95

at Puente Valley OU MW6-3, Diversey Corp/DuBois

Chemical, UAO #93-23





Page 43 of 88






2232607 10/2/1995TL: Quarterly groundwater monitoring rpts for 8/95 &

9/95R09: (T R W, Inc)



Region)

21108 10/5/1995

Ltr: Response to EPA comments in approval ltr 10/2/95

re pumping test at well cluster MW6-3, Diversey

Corp/DuBois Chemical Co, UAO #93-23, w/attch A, air

flow calculations & attch B, air stripper specifications





21112 10/13/1995

Ltr: Transmittal of draft agenda for Puente Valley RI/FS

technical meeting on 10/19/95 & tables 1 & 2 on

potential alternatives, w/attchs


& McKee, Inc)



21118 10/13/1995

Ltr: Acknowledgment of receipt of ltr 10/5/95 re

pumping test at Puente Valley well cluster MW6-3 &

notification of approval of proposed air-stripper

treatment system & water quality sampling frequency,

ref UAO #93-23





21838 10/19/1995

Monitoring well installation & 1st monthly

groundwater monitoring rpt, Puente Valley OU partial

RI, monitoring well cluster 6-3, UAO #93-23, w/TL

10/19/95 to P Ramsey fr R Freudenberger


22000 10/30/1995Technical memo #2, Puente Valley OU interim RI/FS,

FS rpt, w/TL 10/30/95 to P Ramsey fr D ChamberlinR09: (Camp Dresser & McKee, Inc)


Committee)

22436 10/31/1995Ltr: Transmits 10/95 monthly status rpt, Puente Valley

OU RI/FS, w/attch


& McKee, Inc)



21729 11/8/1995Ltr: Comments on Puente Valley OU, RI technical

memo #2 dated 9/19/95, w/encls



21725 11/9/1995Ltr: Revised RI/FS schedule for Puente Valley OU,

w/attch & marginalia re modelling problems





22914 11/9/1995


field activities at monitoring well cluster MW6-3 on

11/8/95

R09: Collar, Robert (C H 2 M Hill, Inc)R09: Ramsey, Phillip (Environmental


Page 44 of 88






21707 11/15/1995

Ltr: Preliminary pumping test results conducted at well

cluster MW 6-3, UAO #93-23, w/graph of test data &

type curve for MW6-36





21837 11/15/1995

2nd monthly groundwater monitoring rpt, Puente

Valley OU partial RI, monitoring well cluster 6-3, UAO

#93-23, w/TL 11/15/95 to P Ramsey fr R

Freudenberger


32019 11/15/1995

Memo: Approval of proposed discharge of

groundwater fr pump tests for RI/FS wells in MW6-3

cluster in Puente Valley



Region)


(Environmental Strategies Corp),

R09: (Diversey Corp)

21726 11/17/1995

Ltr: Transmittal of ltr dated 11/15/95 fr Environmental

Strategies Corp transmitting preliminary pumping test

results for well cluster MW6-3, w/o attch



R09: Wallin, Sharon (Camp Dresser

& McKee, Inc)

21706 11/21/1995Ltr: Results of additional pumping test analysis, UAO

#93-23, w/attch





21727 11/22/1995

Ltr: Response to 11/9/95 request fr Puente Valley

Steering Committee re interim RI/FS schedule

modification



21728 11/24/1995

Ltr: Comments on Puente Valley OU FS technical

memo #2 dated 10/30/95, w/attch A, specific

comments



21709 11/28/1995

Ltr: Response to request to change analytical methods

for measuring 2 anions at Puente Valley OU well

cluster MW6-3 - Diversey Corp/DuBois Chemical, UAO

#93-23, w/ltr to P Ramsey fr P Abe 11/22/95





23415 11/30/1995Ltr: Transmittal of monthly status rpt for 11/95,



& McKee, Inc)



32617 12/4/1995

Data validation rpt: Case/SAS #R95S65, analysis RAS

volatiles, 15 water samples, SDG #SYG859-SYG873,

Puente Valley OU, w/TL 12/4/95 fr K Henry to P

Ramsey

R09: Henry, Karen (Environmental


Page 45 of 88






23417 12/6/1995Ltr: Proposed revised submittal date for Puente Valley

OU draft FS rpt





22817 12/12/1995

Ltr: Transmittal of 3rd monthly groundwater

monitoring rpt, Puente Valley OU partial RI,

monitoring well cluster 6-3, UAO #93-23, w/attch





23388 12/12/1995

Ltr: Transmittal of City of Industry's comments on

technical memo #1, FS, Puente Valley OU, w/attchs,

w/o oversize map





23407 12/12/1995

Ltr: Transmittal of City of Industry's comments on

technical memo #1, FS, Puente Valley OU (oversize

map only - exhibit A, map of San Gabriel River

watershed tributary to Whittier Narrows)





23420 12/12/1995

Ltr: Notification that Puente Valley Steering

Committee's request in ltr 12/6/95 for additional

extension for submittal of draft FS is denied



25435 12/12/1995Draft RI rpt, Puente Valley OU interim RI/FS, w/TL to P

Ramsey, w/o oversize mapsR09: (Camp Dresser & McKee, Inc)


Committee)

25436 12/12/1995

Draft RI rpt, PV OU interim RI/FS (oversize maps only -

plate 1, cluster well TCE & PCE concentrations, plate 2,

network well & San Jose Creek surface water &

weephole sampling results 3/95, & plates 3 & 4 )


Committee)

25437 12/12/1995Draft RI rpt, Puente Valley OU interim RI/FS,

appendices (attchs only)R09: (Camp Dresser & McKee, Inc)


Committee)

24901 12/28/1995Ltr: Transmittal of monthly status rpt for 12/95,



& McKee, Inc)



2096341 1/1/1996 Table re OSCO trigger levels (sheet1)R09: (Environmental Protection Agency

- Region 9)

22017 1/2/1996

Memo: Summary of meeting on 1/2/96 with D

Chamberlin & B Harley of CDM re current status of

CDM's modeling of Puente Valley OU

R09: Woodside, Greg (C H 2 M Hill, Inc)R09: Ramsey, Phillip (Environmental


Page 46 of 88






32615 1/25/1996

Memo: Transmittal of partially reviewed data, Puente

Valley site, case #R96S02, memo #2, SDG #SYI200,

analysis OLM02.0, CLP SOW VOC, w/attchs

R09: Conley, Dawn (Environmental




24899 1/26/1996

Ltr: Transmittal of proposed agenda for meeting on

1/30/96 between Puente Valley Steering Committee &

EPA, w/attch


& McKee, Inc)



24902 1/29/1996Ltr: Transmittal of monthly status rpt for 1/96, Puente



& McKee, Inc)



25444 1/31/1996

Ltr: Notification that Quanterra Environmental

Services determined no significant differences

between 12/89 & 8/93 revision of method 300.0 & no

modifications to sampling & analysis plan (SAP) are

necessary, w/encl





24900 2/1/1996

Ltr: Confirmation of agreements reached between

Puente Valley Steering Committee & EPA during

meeting on 1/30/96 re submittal dates for draft FS rpt,

revised RI rpt pages/sections & final RI & FS rpts





24904 2/1/1996

Ltr: Transmittal of attch A, EPA comments on aquifer

test component of draft RI rpt dated 12/12/95, ref

meeting 1/30/96 between Puente Valley Steering

Committee & EPA, w/attch



2232605 2/9/1996 TL: Quarterly groundwater monitoring rpt for 10/95 R09: (T R W, Inc)



Region)

32614 2/13/1996

Data validation rpt: Case #R96S22, analysis nitrite-N &

nitrate-N by EPA method 300.0, 15 water samples,

SDG #SYI690-SYI704, Puente Valley OU, w/TL 2/15/96

fr J Eidelberg to P Ramsey



23660 2/15/1996

Ltr: Review of Puente Valley OU draft RI rpt dated

12/12/95 incorporating replacement pp transmitted to

EPA on 12/19/95, ref docket #93-26, w/attch



Page 47 of 88







OU RI/FS, w/attch


& McKee, Inc)



24898 3/5/1996

Ltr: Expression of regret that R Walter was unable to

attend informal dispute resolution meeting on

1/30/96 between Puente Valley Steering Committee &

EPA & request for remittance of $28,750 for future

oversight monies



25354 3/8/1996

Ltr: Aquifer test analyses, Puente Valley OU RI/FS,

submitted in response to general comment #6 of EPA's

2/15/96 ltr, w/attch

R09: Fitzgerald, Robert (Camp Dresser

& McKee, Inc)



24808 3/13/1996

Data validation rpt: Case #R96S22, analysis RAP

volatiles, 15 water samples, SDG #SYI690-SYI704,

Puente Valley OU, w/TL 3/13/96 fr D Conley to D

Frazer

R09: Conley, Dawn (Environmental


25445 3/14/1996

1st quarterly groundwater monitoring & aquifer

testing rpt, Puente Valley OU partial RI, monitoring

well cluster 6-3, w/TL 3/14/96 to P Ramsey



rpt & appendix A, w/TL 3/19/96 fr CDM to P RamseyR09: (Camp Dresser & McKee, Inc)


Committee)

25353 3/20/1996

Ltr: Review of Puente Valley Steering Committee's

3/8/96 aquifer test analysis submitted by CDM,

w/attch A, general comments



24217 3/28/1996Draft FS, Puente Valley OU interim RI/FS, rpt &

appendices A-C, w/TL 3/28/96 to P RamseyR09: (Camp Dresser & McKee, Inc)


Agency - Region 9)

24218 3/28/1996Draft FS, Puente Valley OU interim RI/FS, appendices D-

I (attchs only)R09: (Camp Dresser & McKee, Inc)


Agency - Region 9)

24906 3/29/1996

Ltr: Transmittal of attch A, EPA general & specific

comments on RI technical memo #3 (RITM-3), Puente

Valley OU interim RI/FS, dated 3/19/96, w/attch



Page 48 of 88







OU RI/FS, w/attch


& McKee, Inc)






Region)

25247 4/8/1996

Ltr: Confirmation of EPA's understanding of

agreements reached on 4/4/96 re additional info to be

submitted by Puente Valley Steering Committee by

4/18/9 to enable EPA to review draft FS submitted on

3/28/96, w/fax activity rpt 4/8/96



25356 4/10/1996

Ltr: Initial review of draft Puente Valley FS dated

3/28/96 & notification of potentially fatal defect of

excluding EPA's groundwater migration remedial

action objectives (RAOs) fr screening of alternatives





Inc)

25355 4/17/1996

Ltr: Request that J Kwan notify all members of Puente

Valley Steering Committee of scheduled meeting on

4/24/96 at San Gabriel Valley Marriott to discuss

defect with draft FS





Inc)

25245 4/22/1996

Ltr: Response to ltr 4/15/96 fr M Klaiman re failure of

Puente Valley Steering Committee to fully include

EPA's remedial action objectives (RAOs) & no action

alternative in draft FS, w/fax TL 4/22/96 fr Latham &

Watkins

R09: Lucero, Gene (Puente Valley Legal

Committee), R09: (Latham & Watkins

(Attorneys))



25404 4/22/1996

Ltr: Response to Puente Valley Steering Committee's

request that comments & feedback be provided on

draft FS dated 3/28/96 re remediation goals & no

action alternative





Inc)

2096339 4/25/1996Photos (19): OSCO neighborhood at Basetdale Ave &

Alanwood Rd, w/negatives (4 x 6 in, color)

R09: Collins, Patti (Environmental


Page 49 of 88






25396 4/30/1996

Ltr: Transmittal of monthly status rpt 4/96, Puente

Valley OU RI/FS, w/attchs, including ltrs 4/10/96 &

4/22/96 fr N Lau to R Walter, ltr 4/22/96 fr G Lucero to

M Klaiman & ltr 4/29/96 fr R Walter to N Lau


& McKee, Inc)



25395 5/2/1996Ltr: Request for submittal of FS model calibration

documentation, Puente Valley OU interim RI/FS





Inc)

2231769 5/6/1996

Maps (2): Figure 3-2, total VOC concentration contour

map, zone A, 4/96 & figure 3-3, total VOC

concentration contour map, zone B, 4/96, ref former

TRW/Benchmark site (11 in x 17 in, color, scale 1 in =

400 ft)

R09: (Orion Environmental, Inc)

25352 5/8/1996Ltr: Follow-up to 5/1/96 conference call re draft

Puente Valley OUFS, w/o attch





Inc)

25241 5/13/1996

Ltr: Response to ltr 5/8/96 fr N Lau to Puente Valley

Steering Committee & notification of commitment to

implement EPA's remediation goals & no-action

alternative into revised OUFS





25442 5/13/1996Ltr: Additional comments on Puente Valley draft FS

rpt, w/attch





Inc)

25441 5/17/1996

Ltr: Request to defer EPA's proposed meeting on

clarification of review comments dated 5/13/96 on

draft FS submitted by Puente Valley Steering

Committee on 3/28/96 to after completion of EPA's

additional review





32605 5/28/1996

Ltr: Confirmation of understanding of issues re model

calibration assessment comments & final FS revised

due date, Puente Valley OU








& McKee, Inc)



2096332 6/1/1996 OSCO sampling media/technology alternativesR09: (Environmental Protection Agency

- Region 9)

Page 50 of 88






2096333 6/1/1996OSCO potential sampling locations, w/aerial photo &

overlay #1


- Region 9)

25460 6/7/1996

Ltr: Response to recent discussions between Puente

Valley Steering Committee & EPA re projected

completion date for EPA assessment of FS transport

model & 2 specific comments in EPA 5/13/96 draft FS

review ltr





Inc)

25461 6/7/1996

Ltr: EPA review of quarterly groundwater monitoring

& aquifer test rpt for partial RI monitoring well cluster

6-3 dated 3/14/96 & notification that terms of UAO

#93-23 will be completed upon submittal of additional

aquifer test info, w/attch


Protection Agency - Region 9)R09: Hanket, Mark (Diversey Corp)

2192337 6/8/1996Photos (17): Stained floor, taken on 6/7/96 & 6/8/96

(color, 3.5 x 5 in)

25569 6/24/1996

Ltr: Response to ltr 6/7/96 fr P Ramsey to M Hanket re

aquifer testing at well cluster MW6-3, ref UAO #93-23,

w/attchs





25620 6/28/1996

Ltr: Comments on Puente Valley OUFS groundwater

modeling work, supplementing EPA's 5/13/96

comments on draft FS 3/28/96





Inc)


R09: Lara, Julio (CA Regional Water


Region)




& McKee, Inc)



26905 7/1/1996Comment/response summary, final FS, Puente Valley

OU interim RI/FSR09: (Camp Dresser & McKee, Inc)


Committee)

26906 7/1/1996Redline/strikeout of final FS text, Puente Valley OU



Committee)

32308 7/1/1996[Draft] final FS, Puente Valley OU interim RI/FS - rpt &

appendices A-CR09: (Camp Dresser & McKee, Inc)


Committee)

32309 7/1/1996[Draft] final FS, Puente Valley OU interim RI/FS -

appendices D-J (attchs only)R09: (Camp Dresser & McKee, Inc)


Committee)

Page 51 of 88






2096335 7/1/1996

Map: PCE concentrations measured in soil gas samples

collected fr 5- to 10-ft below ground surface in 7/96,

w/sketches, aerial photo & overlay #1 (8-1/2 in x 11 in,

B & W, scale unknown)


2190237 7/1/1996[Draft] final FS, Puente Valley OU interim RI/FS - rpt &

appendices A-CR09: (Camp Dresser & McKee, Inc)


Committee)

25739 7/12/1996

Technical memo: Review of laboratory analytical data

for 2nd monthly groundwater monitoring rpt for

monitoring well cluster 6-3

R09: Antipas, Artemis (C H 2 M Hill,

Inc), R09: Lovenburg, John (C H 2 M

Hill, Inc)



2096342 7/19/1996Field task-specific workplan, OSCO Puente Valley site

soil gas investigation, Whittier Narrows OUR09: (C H 2 M Hill, Inc)


Agency - Region 9)

2096328 7/22/1996

Table 1, address list of residence, OSCO, Puente Valley

site (addresses on Basetdale Ave, Alanwood Rd, Santa

Mariana Ave, Karns Ave & Hilbert Ave in La Puente),

w/marginalia fr Doug to Vicki (faxed fr CH2M Hill)


2096327 7/26/1996

OSCO door-to-door (addresses & homeowners on

Basetdale Ave, Alanwood Rd, Santa Mariana Ave &

Hilbert Ave), w/marginalia


27238 8/2/1996

Ltr: Notification that Diversey Corp has been sold to

Unilever & request that responsibility for Puente

Valley involvement be transferred to successor co of

Diversey, Rathon Corp

R09: Nickerson, Terry (Rathon Corp)R09: Ramsey, Phillip (Environmental


2096334 8/7/1996

Table B-1, halogenated & aromatic hydrocarbons field

analyses results for soil gas samples, former OSCO site,

City of Industry, 25 target compound list, w/figure 2,

location map (draft, faxed 8/7/96)


2096336 8/12/1996Multi-depth soil gas survey rpt - former OSCO site,

Alanwood Rd, Bassett, w/TL 8/14/96

R09: (Environmental Support

Technologies, Inc)R09: (C H 2 M Hill, Inc)

2096330 8/26/1996

Memo: Results of subsurface soil gas investigation

performed at former OSCO Puente Valley site located

within Whittier Narrows OU, w/attchs

R09: Silva, Gabriel (C H 2 M Hill, Inc),

R09: Bensen, Jill (C H 2 M Hill, Inc)

R09: Frazer, Doug (Environmental


Page 52 of 88






26911 9/16/1996

Memo: Transmittal of partially reviewed data, Puente

Valley site, case #R96S53, SDG #SYK160, analysis

OLM02.0, CLP SOW VOC, w/attchs

R09: Richmond, Dawn (Environmental


R09: Frazer, Doug (Environmental





Region)

32603 11/1/1996Ltr: Transmittal of sign-in sheet & overheads fr

10/24/96 meeting, Puente Valley OU, w/attchs


& McKee, Inc)

R09: Whitlock, Janet (Environmental


27239 11/7/1996

Ltr: Notification that Diversey Corp/Dubois Chemical

has completed all terms of UAO #93-23 dated 9/9/93

& EPA will prepare UAO oversight cost documentation

package for Diversey & send billing notice to Rathon

Corp, new owner of Diversey Corp


Protection Agency - Region 9)R09: Nickerson, Terry (Rathon Corp)

32590 12/9/1996Ltr: Inquiry re EPA conditions for drilling & equipping

Rowland Water District well #1

R09: O'laughlin, Thomas (A S L

Consulting Engineers)



32653 12/11/1996Overheads fr presentation on 12/11/96 to Puente

Valley Steering Committee (PVSC) on overview of FS


- Region 9)


Committee)

2096345 1/1/1997Subtasks A, B & C, LOE estimates, w/marginalia re

email to Doug, OSCO workplan estimate & SOW insert


- Region 9)

2192326 1/1/1997

Map: 1997 deep VOC contamination, Puente Valley

OU (draft, 11 in x 17 in, color, scale 1 in = about 2,800

ft)


2192327 1/1/1997

Map: 1997 shallow VOC contamination, Puente Valley

OU (draft, 11 in x 17 in, color, scale 1 in = about 2,800

ft)


2232601 1/1/1997

Quarterly groundwater monitoring rpt for 10/96 -

former Benchmark Technology facility, 200 S Turnbull

Canyon Rd, City of Industry, w/marginalia (incomplete,

pp 2, 12 & 13, figures 3-1, 3-2 & 3-3 only)



Page 53 of 88






32606 1/9/1997

Ltr: Transmittal of EPA comments on change-out pp

for draft RI rpt dated 4/9/96, Puente Valley OU,

w/attch



32591 1/10/1997

Ltr: Response to ltr 12/9/96 fr T O'Laughlin & request

that EPA be included in review process for plans &

specifications for Rowland Water District well #1





32624 1/30/1997Agenda, sign-in sheet & draft overheads fr 1/30/97

Puente Valley OUFS meeting


- Region 9)

2232040 1/30/1997TL: Quarterly groundwater monitoring rpt for 10/96

[NPDES #CAG994150]R09: (T R W, Inc)



Region)

32592 2/1/1997

Construction plans & contract specifications for

Rowland Water District well #1, w/TL 2/25/97 to E

Chow

R09: (A S L Consulting Engineers)

2192338 2/6/1997Photos (5): Excavation, taken on 2/6/97 (color, 3-1/2 x

5 in)

2184042 2/18/1997

Map: Figure 1, well location - Carrier Corp, City of

Industry, ref project N329-107 (color, 11 in x 17 in,

scale 1 in = 500 ft)

R09: (H S I GeoTrans, Inc)

28479 2/26/1997

Ltr: Clarification on Puente Valley Steering

Committee's view of sub-regional alternative to final

FS for Puente Valley OU

R09: Kwan, Joseph (T R W, Inc)R09: Chow, Eugenia (Environmental


2232039 3/3/1997

Meeting Notes: Meeting on 3/3/97 with Trammell

Crow Co re covenant not to sue agreement, ref former

Benchmark Technology site, w/sign-in attendance list

(handwritten)



Region)

32607 3/7/1997Ltr: Response to ltr 2/26/97 fr J Kwan re sub-regional

alternative, Puente Valley OU

R09: Chow, Eugenia (Environmental




Inc)

32593 3/13/1997

Ltr: Comments on construction plans & contract

specifications for Rowland Water District well #1 dated

2/97





Page 54 of 88






2166722 3/17/1997

Oversize Map: Plate 1, cluster well TCE & PCE

concentrations, 7-day, 1st, 2nd & 3rd quarterly

sampling, ref Puente Valley OU interim RI/FS (blueline,

24 x 36 in, 1 in = 500 m)


2166724 3/17/1997

Oversize Map: Plate 2, network well & San Jose Creek

surface water & weephole sampling results 3/95, ref

Puente Valley OU interim RI/FS (blueline, 24 x 36 in, 1

in = 1500 ft)


2232038 3/17/1997

Ltr: Expresses appreciation for meeting with T Bak & S

Jones to discuss prospective purchaser agreement for

Benchmark property in City of Industry & Trammell

Crow's proposed purchase of property

R09: Jones, Stephen (Jones, Day, Reavis

& Pogue (Attorneys))



Region)

32594 3/19/1997

Ltr: Response to EPA comments in ltr 3/13/97 on

contract specifications for Rowland Water District well

#1 dated 2/97 & transmittal of rpt 1/10/97 by Richard

C Slade & Associates, w/attch





32623 3/25/1997Agenda, sign-in sheet & overheads fr 3/25/97 Puente

Valley OUFS meeting


- Region 9)

32608 4/3/1997

Ltr: Confirmation of understanding of additional

sampling of cluster wells installed during RI/FS phase &

proposed plan & record of decision (ROD) format for

Puente Valley OU





32610 4/8/1997Ltr: Confirmation of EPA's intention to invite Rathon

Inc to attend 4/21/97 Puente Valley OU RI/FS meeting

R09: Moffatt, Brett (Environmental




Inc)

32609 4/9/1997

ROC: Clarification of items discussed in 4/3/97 ltr fr J

Kwan re proposed plan & record of decision (ROD),

Puente Valley OU



2192385 4/16/1997Table: Groundwater monitoring rpt, 1st quarter 1997

(attch 1)

32604 4/21/1997Agenda, sign-in sheet & overheads fr 4/21/97 Puente

Valley OUFS meeting


Committee), R09: (Environmental


Page 55 of 88






32611 4/23/1997Ltr: Comments on 3/11/97 draft RI rpt for Puente

Valley OU





Inc)

2192340 4/25/1997Photos (2): Drum, taken on 4/25/97 (color, 3-1/2 x 5

in)

30122 4/29/1997

Ltr: Puente Valley Steering Committee's identification

of factors unique to Puente Valley OU that would

influence ARARs analysis





2166725 5/5/1997

Oversize Map: Plate 4, site plan, A-A' cross section, ref

Puente Valley OU interim RI/FS (blueline, 24 x 36 in, 1

in = 100 ft (vertical), 1 in = 1600 ft (horizontal)


2166723 5/8/1997

Oversize Map: Plate 1, cluster well TCE & PCE

concentrations, 7-day, 1st, 2nd & 3rd quarterly

sampling, ref Puente Valley OU interim RI/FS (blueline,

24 x 36 in, 1 in = 500 m)


32601 5/9/1997

Ltr: Transmittal of & request for comments on

technical memo summarizing nature & extent of VOCs

in groundwater in Puente Valley OU, w/attch &

marginalia





Inc)

2232037 5/12/1997

Memo: Transmits agenda for conference call on

5/13/97 re TRW/Benchmark site & site maps showing

Trammell Crow's proposed bldg & SVE system,

w/attchs (faxed 5/12/97)

R09: Gwinn, Jeffrey (Orion

Environmental, Inc)



Region)

32595 5/20/1997

Ltr: Response to T Poli's concern with EPA request for

analysis of potential effects of proposed well on

existing contamination & request to use CH2M Hill as

consultant for Rowland Water District well #1 project,

w/o attch



R09: Poli, Anthony (Rowland Water

District)

32599 5/21/1997Ltr: Comments on draft RI rpt change-out pages dated

5/9/97, Puente Valley OU





Inc)

32596 5/29/1997

Ltr: Response to E Chow's ltr 5/20/97 & notification

that Rowland Water District well #1 project has been

placed on hold, w/env


District)



Page 56 of 88






30528 5/30/1997 FS, Puente Valley OU interim RI/FS R09: (C H 2 M Hill, Inc)R09: (Environmental Protection

Agency - Region 9)

30642 5/30/1997Final RI rpt, Puente Valley OU interim RI/FS, w/o

oversize mapsR09: (Camp Dresser & McKee, Inc)


Committee)

30643 5/30/1997Final RI rpt, appendices, Puente Valley OU interim

RI/FS, w/o oversize mapsR09: (Camp Dresser & McKee, Inc)


Committee)

30644 5/30/1997Final RI rpt, appendix E, attch 2, v1, Puente Valley OU



Committee)

30645 5/30/1997Final RI rpt, appendix E, attch 2, v2, Puente Valley OU



Committee)

30692 5/30/1997Final RI rpt, Puente Valley OU interim RI/FS (oversize

maps only - plates 1-4)R09: (Camp Dresser & McKee, Inc)


Committee)

30693 5/30/1997Final RI rpt, appendices, Puente Valley OU interim

RI/FS (oversize maps only - plates A & B)R09: (Camp Dresser & McKee, Inc)


Committee)

32598 5/30/1997 TL: Final RI rpt, Puente Valley OU interim RI/FSR09: Chamberlin, David (Camp Dresser

& McKee, Inc)



32589 6/13/1997Ltr: Response to ltr 5/29/97 fr A Poli & clarification of

issues re Rowland Water District well #1




District)

32602 6/25/1997Sign-in sheet & overheads used for EPA presentation

at 6/25/97 meeting with Puente Valley OU PRPs


- Region 9)

30878 6/30/1997

Ltr: Request for written notice fr EPA that Puente

Valley Steering Committee has demonstrated that

terms of administrative consent order have been

completed, ref EPA docket #93-26





32625 7/8/1997Ltr: Comments on draft Puente Valley RI/FS dated

4/25/97, w/attch

R09: Spiszman, Jacalyn (CA





32588 7/10/1997

Ltr: Response to ltr 6/13/97 fr E Chow & expression of

intent to review new developments re Rowland Water

District well #1


District)



Page 57 of 88






2232036 7/16/1997

Ltr: Requests that quarterly groundwater monitoring

be modified to semiannual groundwater monitoring,

ref former Benchmark site, City of Industry


Environmental, Inc), R09: Niemeyer,

Linda (Orion Environmental, Inc)



Region)

32622 7/18/1997

Agenda & Camp Dresser & McKee's overheads fr

7/18/97 EPA/Puente Valley Steering Committee

meeting


- Region 9)

32621 7/30/1997Agenda & sign-in sheet, 7/30/97 EPA/Puente Valley

Steering Committee meeting


- Region 9)

31629 8/15/1997

Ltr: Transmittal of attch A, Puente Valley Steering

Committee's comments on FS for Puente Valley OU

interim RI/FS issued by EPA on 5/30/97, w/attch

R09: Walter, Robert (T R W, Inc)R09: Moffatt, Brett (Environmental


32597 8/22/1997Ltr: Notification that Regional Board has reviewed final

draft of Puente Valley OUFS & has no comments



Angeles Region)



32612 8/27/1997Overheads fr 8/27/97 EPA presentation to Puente

Valley Steering Committee


- Region 9)


Committee)

32620 8/27/1997

Overheads fr 8/27/97 Puente Valley Steering

Committee presentation, proposed early data

collection program


Committee)

2190252 9/5/1997

SAP, shallow plume investigation/confirmatory

sampling program, mouth of Puente Valley, w/TL to E

Chow (preliminary draft)


Committee)

32658 9/16/1997

Ltr: Response to ltr 6/30/97 fr R Walter & notification

that terms of administrative consent order (ACO) #93-

26 have been completed except for requirement of

section 15 re reimbursing EPA's oversight costs





Inc)

2190245 9/29/1997

Memo: Rationale & location of phase 2 in-situ

groundwater samples, mouth of Puente Valley,

shallow plume investigation, w/figure 1-1 titled phase

2 in-situ groundwater sample location map


& McKee, Inc)



Page 58 of 88






2190246 9/29/1997

Memo: Rationale & location of phase 2 in-situ

groundwater samples, mouth of Puente Valley,

shallow plume investigation, w/figure 1-1 titled phase

2 in-situ groundwater sample location map & fax TL to

E Chow, et al requesting review


& McKee, Inc)



2190251 9/29/1997

Map: Figure 1-1, phase 1/phase 2 in-situ groundwater

sample location map, Puente Valley OU (color, 8-1/2 in

x 11 in, scale unknown)


32613 10/3/1997Agenda & sign-in sheet, 10/3/97 Puente Valley

Steering Committee/EPA meeting


- Region 9)

2190244 10/13/1997

Memo: Transmits on behalf of Puente Valley Steering

Committee draft tables 1a & 1b showing VOC &

nitrate/TDS values for all data & draft table 2..., ref

shallow investigation/confirmation program results,

w/attchs


& McKee, Inc)



2192387 10/27/1997Table re groundwater monitoring rpt, 3rd quarter

1997, ref field I D #CP09, EW01, EW06...

32665 10/28/1997

Ltr: Comments of Puente Valley Steering Committee to

EPA National Remedy Review Board on Puente Valley

OUFS, w/attch





32664 10/29/1997

Ltr: Comments of City of Industry & its redevelopment

agency Industry Urban-Development Agency on

Puente Valley OUFS, w/resume of D Howard &

comments




Protection Agency - Region 9), R09:

(Environmental Protection Agency -

National Remedy Review Board)

32666 10/30/1997

Ltr: Comments of Rathon Corp (formerly Diversey

Corp) on Puente Valley OU interim RI/FS FS dated

5/30/97, w/attch

R09: Caffee, Karen (McCutchen, Doyle,

Brown & Enersen (Attorneys))



32667 10/30/1997 Ltr: Comments on draft FS, Puente Valley OUR09: Williams, Carol (Main San Gabriel

Basin Watermaster)



32668 10/30/1997Ltr: Comments on remedial alternatives in Puente

Valley OU final FS rpt dated 5/30/97

R09: Whitehead, Michael (San Gabriel

Valley Water Co)



Page 59 of 88






2232034 11/4/1997

Ltr: Request for well abandonment, ref TRW-

Benchmark site, City of Industry, w/figure 1, SVE

system layout & proposed bldg location


Environmental, Inc), R09: Webster,

Malcolm (Orion Environmental, Inc)



Region)

2190249 11/20/1997

Memo: Transmits table 1, monitoring well sampling

results, VOCs, nitrate & TDS analytical summary,

mouth of Puente Valley investigation, w/attch ( faxed)


McKee, Inc)



32663 11/24/1997

Responses to issues raised by Puente Valley Steering

Committee in 10/30/97 submittal to National Remedy

Review Board, Puente Valley OU, City of Industry



2190247 11/25/1997Memo: Applicability of NoVOCs technology in Puente

Valley OU, w/fax TLR09: Harris, Jonathan (C H 2 M Hill, Inc)



2232033 11/26/1997 TL: Quarterly groundwater monitoring rpt for 5/97 R09: Kwan, Joseph (T R W, Inc)



Region)

2232032 12/1/1997

Ltr: Transmits graphs showing total VOC

concentrations vs time, ref vapor wells VES #1A, VES

#1B, VM-4A, VM-4B, Z2-12 & VES #2, TRW/Benchmark

site, City of Industry, w/attchs


Environmental, Inc), R09: Webster,

Malcolm (Orion Environmental, Inc)



Region)

32669 12/10/1997Guidance documents for Puente Valley OU

administrative record


- Region 9)

2232031 12/10/1997

Ltr: Acknowledges receipt of 1) ltr 11/4/97 re request

for well abandonment & 2) ltr 12/1/97 re historical

VOC concentrations for vapor wells VES #1A, VES #1B,

VM-4A, VM-4B, Z2-12 & VES #2, ref former Benchmark

site, 200 S Turnbull Canyon Rd, Industry

R09: Heath, Arthur (CA Regional Water


Region)


33168 12/18/1997

Memo: National Remedy Review Board

recommendations on proposed remedial action (RA)

for Puente Valley OU

R09: Means, Bruce (Environmental

Protection Agency - National Remedy

Review Board)



Page 60 of 88






2190250 12/18/1997

Memo: Transmits finalized table 1, monitoring well

sampling results, VOCs, nitrate & TDS analytical

summary, mouth of Puente Valley investigation,

w/attch ( faxed)


McKee, Inc)



33167 12/30/1997Memo: Response to 12/18/97 National Remedy

Review Board recommendations on Puente Valley OU



R09: Means, Bruce (Environmental

Protection Agency - National

Remedy Review Board)

32672 1/1/1998 Fact sheet: Proposed plan, Puente Valley OUR09: (Environmental Protection Agency

- Region 9)

34065 1/28/1998Mtg Transcript: Proceedings, Puente Valley OU

community meeting 1/28/98


- Region 9)

33768 2/1/1998

Fact sheet: Proposed plan, Puente Valley OU (EPA

extends public comment period closing date to

3/16/98)


- Region 9)

2240725 3/6/1998

(Privileged) Memo: Transmits ltr drafted at request of

Trammell Crow Co acknowledging agreement &

covenant not to sue (ACNS) in lieu of pre-purchase

agreement (PPA), w/o attch (Privileged document

target only)



Region)

R09: Dickerson, Dennis (CA Regional


Angeles Region), R09: Leon, Jorge

(CA Regional Water Quality Control


50620 5/4/1998Mouth of valley investigation, Puente Valley OU, w/o

attchR09: (Camp Dresser & McKee, Inc)


Committee)

50725 5/4/1998

Mouth of valley investigation, Puente Valley OU - map

re selected VOC concentrations fr 1997 & 1998

sampling, shallow zone (oversize map only)


Committee)

2232026 6/11/1998

Ltr: Transmits interim status rpt, 1992-96 & informs

that ownership of Benchmark property at 200 S

Turnbull Canyon Rd, City of Industry has been

transferred fr Benchmark Holding Group to Trammell

Crow Co, w/o attch




Region)

2232024 6/23/1998

Meeting Agenda: Status rpt submittal & soil closure

meeting on 6/23/98, ref Benchmark site, City of

Industry



Page 61 of 88






2232025 6/23/1998

Sign-in sheet of meeting on 6/23/98 with TRW, Orion,

w/notes re remedial progress in vadose zone &

business cards of Orion Environmental's L Niemeyer &

M Webster



Region)

2190253 7/24/1998

Technical Memo: Evaluation of potential nitrate & TDS

impacts fr Puente Valley OU discharge to San Jose

Creek

R09: Harris, Jonathan (C H 2 M Hill, Inc)R09: Henning, Loren (Environmental


2232023 7/24/1998

Ltr: Transmits & requests for approval of closure rpt

for vadose zone soil at Benchmark site, w/marginalia,

w/o attch




Region)

2234072 8/1/1998

Groundwater monitoring rpt, 11/97 annual event -



R09: (T R W Safety, Health &

Environmental Affairs)R09: (T R W, Inc)

2232022 8/4/1998

Email: Requests for approval of closure rpt for vadose

zone soil at Benchmark site forwarded to J Lara on

7/24/98, w/marginalia


R09: Heath, Arthur (CA Regional


Angeles Region)

2162745 8/10/1998Discharge options study rpt, draft, w/TL 8/10/98 fr J

Kwan to L HenningR09: (Camp Dresser & McKee, Inc)

40106 9/1/1998

Interim record of decision (ROD), Puente Valley OU, v1

& 2 (OU 01, ROD completion, sequence 001, action

date 9/30/98)


- Region 9)

2232020 9/3/1998 TL: Groundwater monitoring rpt for 11/97 R09: Kwan, Joseph (T R W, Inc)

R09: Solomon, Ejigu (CA Regional


Angeles Region)

39880 9/14/1998

Resolution #98-016 - consideration of approval of

resolution supporting EPA's proposed plan for site

cleanup



Angeles Region)

2232019 9/15/1998

Ltr: Acknowledges receipt of ltr 7/24/98 transmitting

closure rpt for vadose zone soil & informs of no

further requirements - TRW/Benchmark site, 200 S

Turnbull Canyon Rd, City of Industry

R09: Heath, Arthur (CA Regional Water


Region)


2162742 12/1/1998Annual rpt, 1998, Well Investigation Program, w/TL

9/13/99 to E Adams




Agency - Region 9)

Page 62 of 88






2232014 4/19/1999 TL: Groundwater monitoring rpt for 5/98 R09: Kwan, Joseph (T R W, Inc)



Angeles Region)

2192322 5/13/1999

Memo: Transmits 1) preliminary data fr testing of San

Gabriel Valley Water Co wells B7C & B11B & 2) SAP for

additional investigation of east & west shallow

groundwater plumes in mouth of Puente Valley,

w/attchs & marginalia


& McKee, Inc)

R09: Adams, Elizabeth


Region 9)

2162809 5/19/1999

Memo: Transmits on behalf of Puente Valley Steering

Committee rationale for siting of new wells for Puente

Valley OU expedited RD program (ERD), w/attch A &

marginalia (faxed)


& McKee, Inc)

R09: Adams, Elizabeth


Region 9), R09: Mcdaniel, Penelope


Region 9)

2162810 5/20/1999Table re mouth of Puente Valley investigation,

chlorinated VOCs analytical summary, PVSC 1997-98R09: (Camp Dresser & McKee, Inc)


Committee)

80642 6/23/1999Public notice: EPA announces availability of ROD for

Puente Valley OU, w/invoice & advertising orderR09: (San Gabriel Valley Tribune)

2232012 7/12/1999 TL: Soil & groundwater remediation, 1997 status rpt R09: Kwan, Joseph (T R W, Inc)



Angeles Region)

2069141 8/12/1999Wells B7C & B11B investigation, rpt of findings, w/o

oversize drawingsR09: (Camp Dresser & McKee, Inc)


Committee)

2192381 8/12/1999Wells B7C & B11B investigation, rpt of findings,

w/oversize drawings, marginalia & TL to P McDanielR09: (Camp Dresser & McKee, Inc)


Committee)

2069136 9/2/1999

Technical Memo: Review of Puente Valley OU wells

B7C & B11B investigation, rpt of findings dated

8/12/99, w/selected text fr rpt of findings

R09: Mark, Dave (C H 2 M Hill, Inc),

R09: Harris, Jonathan (C H 2 M Hill, Inc)

R09: Mcdaniel, Penelope


Region 9)

2162815 9/2/1999



8/12/99, w/table, plot & TL





Region 9)

Page 63 of 88






2162816 9/2/1999



8/12/99, w/table, plot & marginalia





Region 9)

2069139 2/22/2000

Email: Transmits & requests for comments on results fr

Puente Valley Steering Committee's step draw down &

slug tests, w/attch & history



Region 9)

R09: Mark, Dave (C H 2 M Hill, Inc)

2162813 4/5/2000

Memo: Review of PVSC's analysis of slug & step aquifer

tests, w/o plots & calculations, w/attch dated

2/21/2000 re slug tests, step-drawdown tests,

comparison to model conductivities...

R09: Harris, Jonathan (C H 2 M Hill,

Inc), R09: Collar, Robert (C H 2 M Hill,

Inc), R09: Henderson, Tom (C H 2 M

Hill, Inc)



Region 9)

2162814 4/5/2000Memo: Review of PVSC's analysis of slug & step aquifer

tests, w/o plots & calculations, w/marginalia

R09: Harris, Jonathan (C H 2 M Hill,

Inc), R09: Collar, Robert (C H 2 M Hill,

Inc), R09: Henderson, Tom (C H 2 M

Hill, Inc)



Region 9)

2231780 4/6/2000TL: Groundwater monitoring rpt, 5/99 semiannual

eventR09: Kwan, Joseph (T R W, Inc)



Angeles Region)

2162811 4/14/2000

Memo: Review of data & analysis of slug tests & step

tests performed on wells installed at mouth of Puente

Valley



Region 9)


Steering Committee)

2071336 6/1/2000(Privileged) Attchs A-J to legal memo (Privileged

document target only)


Agency - Region 9)

2231778 6/13/2000

TL: Groundwater monitoring rpt, 11/99 annual event -



R09: (T R W, Inc)



Angeles Region)

2231777 8/16/2000

TL: Groundwater monitoring rpt, 5/2000 semiannual

event - former Benchmark Technology facility, 200 S


R09: (T R W, Inc)



Angeles Region)

2234074 9/1/2000 Soil & groundwater remediation, 1999 status rpt R09: (Orion Environmental, Inc) R09: (T R W, Inc)

2183517 9/26/2000

Ltr: Informs that Carrier Corp concluded data collected

during oxidation FS was inconclusive & rescinded

request to extend testing period, ref former Carrier

facility, 935 S Azusa Ave, City of Industry (faxed

4/19/2001)

R09: Yeich, Brian (United Technologies

Corp)

R09: Oriola, Dixon (CA Regional


Angeles Region)

Page 64 of 88






2231773 9/29/2000

TL: Soil & groundwater remediation, 1999 status rpt,

ref former TRW/Benchmark site, 200 Turnbull Canyon

Rd, City of Industry




Angeles Region)

2192382 10/30/2000

Ltr: Transmits site assessment & RA quarterly progress

rpt #74, ref BDP Co/Carrier Corp & CAO #88-11,

w/attch

R09: Parsons, Scott (H S I GeoTrans,

Inc)



Angeles Region)

2231779 3/1/2001

TL: Groundwater monitoring rpt, 11/2000 annual



R09: (T R W, Inc)



Angeles Region)

2192383 4/27/2001

Ltr: Transmits site assessment & RA quarterly progress

rpt #75, ref BDP Co/Carrier Corp & CAO #88-11,

w/attch

R09: Parsons, Scott (GeoTrans, Inc)



Angeles Region)

2231772 7/18/2001

TL: Soil & groundwater remediation, 2000 status rpt,

ref former TRW/Benchmark site, 200 Turnbull Canyon

Rd, City of Industry


Environmental, Inc)



Angeles Region)

2231771 9/21/2001

Ltr: Acknowledges receipt of semiannual groundwater

monitoring rpt dated 8/2001 & requests for submittal

of executive summary of groundwater remedial

activities, map of plumes..., ref former Benchmark site,

200 Turnbull Canyon Rd, City of Industry

R09: Oriola, Dixon (CA Regional Water


Region)

R09: Sullivan, Amy (T R W, Inc)

2231770 9/27/2001

Meeting Notes: Meeting on 9/27/2001 with TRW Inc

re 3 sites, Monadnock, Benchmark & former Lucas

Western



2231768 11/14/2001

Maps (2): Figure 1, total VOC concentration contour

map, zone A, 5/2001 & 4/96 comparison & figure 2,

total VOC concentration contour map, zone B, 5/2001

& 4/96 comparison, ref former TRW/Benchmark site

(11 in x 17 in, color, scale 1 in = 400 ft)


2231766 11/30/2001

Meeting Notes: Meeting on 11/30/2001 with L

Niemeyer re Benchmark status, Western Gear status,

Monadnock status, w/1) table re 1,4-dioxane by

modified EPA 8260 & 2) table re FIELD_PT_NAME,

XY_SURVEY_DATE, LATITUDE...

R09: Castaneda, Angelica (CA Regional


Angeles Region)

Page 65 of 88






2231767 11/30/2001Sign-in sheet for meeting on 11/30/2001 with L

Niemeyer re Benchmark site

R09: Castaneda, Angelica (CA Regional


Angeles Region)

2069140 12/3/2001

Memo: Transmits results of analysis, 1,4-dioxane by

modified EPA 8260, project Benchmark, w/attch

(faxed)

R09: Castaneda-jimenez, Angelica (CA

Regional Water Quality Control Board -

Los Angeles Region)



Region 9)

2231765 3/29/2002Ltr: PRP notice of intent to comply with UAO #2002-06

for RD/RA (faxed 12/26/2002 to A Castaneda)R09: Walter, Robert (T R W, Inc)



Region 9)

2231762 5/20/2002

TL: Annual groundwater monitoring & remediation

system status rpt, 11/2001 - former Benchmark

Technology facility, 200 S Turnbull Canyon Rd, City of

Industry

R09: (T R W, Inc)

R09: Castaneda, Angelica (CA



2069173 5/23/2002

Waste discharge requirements for discharges of

treated groundwater fr investigation &/or cleanup of

VOCs contaminated sites to surface waters in coastal

watersheds of Los Angeles & Ventura Counties,

w/attchs A-C & app I, order # R4-2002-0107



Angeles Region)

2192330 8/7/2002Ltr: Groundwater monitoring results for 4/2002

monitoring event, Puente Valley OU, w/attchsR09: (Camp Dresser & McKee, Inc)



Region 9)

2192372 8/13/2002TL: Groundwater monitoring results for 4/2002

monitoring event, Puente Valley OUR09: (Camp Dresser & McKee, Inc)



Region 9)

2231761 11/8/2002

Ltr: Notice of potential change in ownership of TRW

Inc, ref Puente Valley OU AO for RA dated 3/21/2002,

w/o attch

R09: Walter, Robert (T R W, Inc)



Region 9)


eventR09: (T R W, Inc)




Page 66 of 88






2231759 12/17/2002

Ltr: Transmits info re spills, leaks, investigations &

cleanups (SLIC) oversight cost reimbursement account -


Canyon Rd, City of Industry, w/o attchs



Angeles Region)

R09: Kwan, Joseph (Northrop

Grumman Corp)

2164036 12/20/2002Ltr: Expresses concerns on San Gabriel Valley Water

Co's B11 & B24 projects


& McKee, Inc)

R09: Williams, Carol (Main San

Gabriel Basin Watermaster)

2164034 1/21/2003

Ltr: Responds to ltr 12/20/2002 fr D Chamberlin re

CDM work on behalf of TRW Inc on design of

intermediate zone remedy for Puente Valley OU, w/o

attch

R09: Ryan, Timothy (San Gabriel Valley

Water Co)


Dresser & McKee, Inc)

2164035 1/22/2003

Ltr: Expresses appreciation for meeting on 1/16/2003

to discuss cleanup measures in Puente Valley OU

prompted by modeling & mapping of contaminant

plumes by CH2M Hill, ref B7, B9 & B11 wells

R09: Whitehead, Michael (San Gabriel

Valley Water Co)



Angeles Region)

2164033 1/23/2003

Ltr: Comments on behalf of Northrop Grumman Space

& Missions Systems Corp (formerly TRW Inc) & Puente

Valley Steering Committee on ltr 1/7/2003 fr F

LoGuidice to C Williams, ref San Gabriel Valley Water

Co B11 & B24 projects


& McKee, Inc)



2231758 2/10/2003Ltr: Comments on statements in ltr 1/22/2003 fr M

Whitehead to D Oriola re Benchmark Technology site

R09: Volz, Christian (McKenna, Long &

Aldridge (Attorneys))



Angeles Region)

2231756 2/21/2003Email: Request for boring/well log for Benchmark wells

W20 & W12R09: Mark, Dave (C H 2 M Hill, Inc)




2231757 2/24/2003Memo: Boring logs for Benchmark wells W12 & W20,

w/attch & TL 2/24/2003 to D Mark (faxed)

R09: Niemeyer, Linda (Orion

Environmental, Inc)




2224403 3/20/2003Mtg Agenda: Puente Valley OU technical meeting on

3/20/03

2224404 3/20/2003Sign-in sheet of Puente Valley OU technical meeting on

3/20/03 (faxed)

Page 67 of 88






2224405 3/20/2003Puente Valley OU shallow zone RD status, w/map &

shallow zone monitoring summary table



Region 9)

2224406 3/20/2003

Overheads: CSIWNP chronology of events, MP-21

objectives, w/table 1, Puente Valley OU groundwater

results analytical summary, VOCs, table 2, Puente

Valley OU groundwater results analytical summary,

emerging compounds, nitrate

2164025 5/12/2003

Ltr: Comments on Watermaster's staff rpt addendum

5/5/2003 re proposed San Gabriel Valley Water Co

B11C replacement well



Region 9)



2164024 7/1/2003

Ltr: Comments on Watermaster's staff rpt 6/23/2003

re proposed San Gabriel Valley Water Co B24A & B24B

replacement wells & water treatment plant



Region 9)



2231753 10/1/2003Cleanup & abatement order #R4-2003-0021, w/attchs

A & B



Angeles Region)

R09: (Northrop Grumman Space &

Missions Systems Corp)

2231754 10/1/2003

TL: Cleanup & abatement order #R4-2003-0021, ref





Angeles Region)


Grumman Corp)

2231751 10/29/2003


Board, Northrop Grumman, CDM & Orion re former

Benchmark Technology site (Northrop Grumman

Space & Mission Systems Corp)

2234070 11/1/2003Groundwater monitoring rpt, 5/2003 semiannual

event




event

R09: Tabon, Maureen (Northrop

Grumman Corp)




2069144 3/1/2004 Draft final groundwater modeling rpt, shallow zone RD R09: (C H 2 M Hill, Inc)R09: (Environmental Protection

Agency - Region 9)

Page 68 of 88






2231744 3/9/2004

Ltr: Northrop's proposal re scope of work to perform

under negotiated Benchmark CAO, ref rescinded CAO

#R4-2003-021 & Puente Valley regional shallow zone

remedy, w/mail checklist



R09: Bacharowski, David (CA


Board - Los Angeles Region), R09:

Minor, Dustin (Environmental


2231748 3/9/2004

Ltr: Northrop's proposal re scope of work to perform

under negotiated Benchmark CAO, ref rescinded CAO

#R4-2003-021 & Puente Valley regional shallow zone

remedy, w/marginalia





Board - Los Angeles Region), R09:

Minor, Dustin (Environmental


2183540 3/18/2004

Meeting Notes: Summary of Puente Valley OU

groundwater modeling presentation to DTSC on

3/18/2004

R09: Dolegowski, John (C H 2 M Hill,

Inc)

2192378 4/12/2004

Ltr: Monthly progress rpt for 3/2004 submitted on

behalf of Northrop Grumman Space & Missions

Systems Corp, formerly TRW Inc, w/TL to P McDaniel


& McKee, Inc)



Region 9)

2231746 4/14/2004TL: Annual groundwater monitoring & remediation

system status rpt, 11/2003


Grumman Corp)

R09: Ortez, Carlos (CA Regional


Angeles Region)

2231745 5/11/2004

Ltr: Comments on proposal submitted by Northrop on

3/9/2004 that Northrop be held responsible for 1,4-

dioxane groundwater cleanup to Valley Boulevard

only, ref rescinded CAO #R4-2003-021 & Puente Valley

regional shallow zone remedy



Angeles Region)

R09: Volz, Christian (McKenna, Long

& Aldridge (Attorneys))

2231743 5/18/2004


Board, Northrop Grumman, EPA, CDM & Watermark

re former Benchmark Technology site

2192379 7/9/2004



Systems Corp, formerly TRW Inc, w/TL to P McDaniel


& McKee, Inc)



Region 9)

Page 69 of 88






2184026 8/9/2004



Systems Corp, formerly TRW Inc, ref UAO #2002-06,

w/TL 7/9/2004 [sic] to P McDaniel


& McKee, Inc)



Region 9)

2069138 8/13/2004

Technical Memo: Updated evaluation of potential

impacts to San Jose Creek & San Gabriel River fr

nitrate & TDS in Puente Valley OU treatment

discharge, w/attchs

R09: Berens, Amanda (C H 2 M Hill,

Inc), R09: Mark, Dave (C H 2 M Hill, Inc)



Region 9)

2184023 8/18/2004

Ltr: Informs that client United Technologies Corp

reached agreement with EPA to install groundwater

extraction & treatment system for Puente Valley OU &

transmits map showing locations of 6 groundwater

extraction wells, w/attch

R09: Lee, Don (GeoTrans, Inc), R09:

Parsons, Scott (GeoTrans, Inc)

R09: Boada, Joe (City of La Puente -

Dept of Public Works)

2071334 8/20/2004

Ltr: Confirms Regional Board's position re discharge of

total dissolved solids (TDS) & nitrates at Puente Valley

OU



Region 9)




2184037 9/1/2004

Drawings: Puente Valley RD groundwater treatment

plant, wells & pipelines, interim pre-final focused

design review package, w/marginalia (B & W, 11 in x

17 in, preliminary, not for construction)


Agency - Region 9)

2193825 9/1/2004

Drawings: Puente Valley RD groundwater treatment

plant, wells & pipelines, interim pre-final focused

design review package (B & W, 11 in x 17 in,

preliminary, not for construction)


Agency - Region 9)


event



2193824 9/2/2004

Ltr: Transmits interim pre-final focused design

submittal, Puente Valley OU shallow zone RD, w/rpt

titled groundwater extraction & treatment plant,

interim pre-final focused design submittal dated

9/2004 & containing technical specifications


Inc)



Region 9)

Page 70 of 88






2184027 9/10/2004



Systems Corp, formerly TRW Inc, ref UAO #2002-06,

w/TL 9/14/2004 to P McDaniel


& McKee, Inc)



Region 9)

2183533 9/16/2004

Memo: Pipeline design sheets for Puente Valley OU

interim pre-final focused design, ref proposed

locations of planned shallow zone extraction wells,

w/drawings


Inc), R09: Menon, Lucy (C H 2 M Hill,

Inc)



event


Grumman Corp)



Angeles Region)

2238558 9/20/2004

Table: Federal funding administration summary,

application period #4 ending 7/9/04, approved

9/20/04, for Water Entities & cities including CA

Domestic Water Co, Valley County Water District, &

City of Monterey Park (final), 11 in x 17 in

2186386 10/7/2004

Ltr: Acknowledges receipt of ltr 5/14/2004 re

abandonment of select groundwater monitoring & SVE

wells & informs that Regional Board agrees with

EPA/Northrop recommendation - former Western

Gear facility at 14724 E Proctor Ave, City of Industry



Angeles Region)


Grumman Corp)

2184036 10/13/2004


submittal markups, Puente Valley OU shallow zone RD,

w/attchs including ltr 9/2/2004 & specifications


Inc)



Region 9)

2186387 10/15/2004

Ltr: Acknowledges receipt of SVE well installation rpt &

request for closure of 1,1,1-TCA still area dated

8/27/03, & informs of no further requirements for

vadose zone - former Western Gear, 14724 E Proctor

Ave, Industry, w/map



Angeles Region)


Grumman Corp)

Page 71 of 88






2184038 10/26/2004


submittal markups dated 10/13/2004, design sheets,

DVDs, ref Puente Valley OU shallow zone RD, w/o

attchs


Inc)



Region 9)

2069142 11/9/2004

Compliance, sentinel & investigatory well network

(CSIWN) installation rpt, w/marginalia, w/oversize well

logs

R09: (Camp Dresser & McKee, Inc)R09: (Environmental Protection

Agency - Region 9)

2184029 11/10/2004



Systems Corp, ref UAO #2002-06, w/TL 11/10/2004 to

P McDaniel


& McKee, Inc)



Region 9)

2071853 11/16/2004

Ltr: Regional Board concurs on technical memo

8/13/2004 re updated evaluation of potential impacts

to San Jose Creek & San Gabriel River fr nitrate & TDS

in Puente Valley OU treatment discharge



Region 9)




2069143 12/1/2004Final field investigation rpt for Puente Valley OU

shallow groundwater RDR09: (C H 2 M Hill, Inc)


Agency - Region 9)

2183513 12/1/2004

Draft RD workplan, westernmost plume area

monitoring well installation & groundwater

monitoring, ref interim shallow zone remedy, Puente

Valley OU

R09: (GeoTrans, Inc)


shallow groundwater RD, w/color-coded mapsR09: (C H 2 M Hill, Inc)


Agency - Region 9)


shallow groundwater RDR09: (C H 2 M Hill, Inc)


Agency - Region 9)

2069137 12/3/2004

Technical Memo: Review of compliance, sentinel &

investigatory well network (CSIWN) installation rpt for

intermediate zone, dated 11/9/2004, w/tables

R09: Mark, Dave (C H 2 M Hill, Inc)



Region 9)

2184030 12/8/2004



Systems Corp, ref UAO #2002-06, w/TL 12/8/2004 to P

McDaniel


& McKee, Inc)



Region 9)

Page 72 of 88






2183514 12/16/2004

TL: 1) RD workplan, installation & testing of extraction

wells & 2) draft RD workplan, westernmost plume area

monitoring well installation & groundwater

monitoring, ref interim shallow zone remedy, Puente

Valley OU




Region 9)

2184031 1/10/2005



Systems Corp, ref UAO #2002-06, w/TL 1/10/2005 to P

McDaniel


& McKee, Inc)



Region 9)

2184032 2/10/2005



Systems Corp, ref UAO #2002-06, w/TL 1/10/2005 [sic]

to P McDaniel


& McKee, Inc)



Region 9)

2225367 2/17/2005

TL: Preliminary draft RD workplan, interim shallow

zone remedy, Puente Valley OU, City of Industry & La

Puente




Region 9)

2231740 2/23/2005

Ltr: Informs that Regional Board reviewed case files for

Northrop Grumman Space & Missions Systems Corp

(NGSMSC), formerly known as TRW/Benchmark &

believes there is no need to issue new CAO, ref CAO

#89-034



Angeles Region)


Grumman Corp)

2231156 3/1/2005Annual groundwater monitoring & remediation




2231739 3/8/2005

Ltr: Comments on supplemental requirements to CAO

#89-034 in ltr 2/23/2005 fr Regional Board, ref

Benchmark Technology, City of Industry


Grumman Corp)




2231735 3/25/2005

TL: Annual groundwater monitoring & remediation

system status rpt, 11/2004 - former Benchmark

Technology facility, 200 S Turnbull Canyon Rd, City of

Industry


Grumman Corp)



Angeles Region)

2222891 4/1/2005RD workplan, interim shallow zone remedy, Puente

Valley OU, City of Industry & La PuenteR09: (GeoTrans, Inc)

2071854 4/18/2005Ltr: Comments on proposed explanation of significant

differences (ESD)

R09: Cota, Thomas (CA Environmental


Substances Control)

R09: Salyer, Kathleen


Region 9)

Page 73 of 88






2225381 5/6/2005TL: RD/RA workplan, Puente Valley OU intermediate

zone remedy

R09: Zych, Michele (Camp Dresser &

McKee, Inc)

R09: Barton, Dana (Environmental


2222889 5/6/2005RD/RA workplan, Puente Valley OU intermediate zone

remedyR09: (Camp Dresser & McKee, Inc)



2071335 5/9/2005Dept of Health Services drinking water notification

level overviewR09: (CA Dept of Health Services)

2071855 5/18/2005Ltr: Responds to DTSC comments on proposed

explanation of significant differences (ESD)

R09: Salyer, Kathleen (Environmental


R09: Cota, Thomas (CA



2069172 5/20/2005Ltr: Expresses concurrence with 5/12/2005 draft

explanation of significant differences (ESD)

R09: Cota, Thomas (CA Environmental


Substances Control)

R09: Salyer, Kathleen


Region 9)

2234075 6/1/2005

RA plan for Valley Boulevard groundwater remediation

- former Benchmark Technology facility, City of

Industry, ref CAO #89-034 , w/TL to D Bacharowski

R09: (Orion Environmental, Inc)R09: (Northrop Grumman Space &


2069135 6/10/2005Technical Memo: Puente Valley groundwater quality

data in EPA San Gabriel Basin database


R09: Collar, Robert (C H 2 M Hill, Inc)



2069134 6/14/2005Explanation of significant differences (ESD) to 1998

interim record of decision (ROD), w/attchs

R09: Adams, Elizabeth (Environmental


2071852 8/1/2005Memo: Data relied upon for explanation of significant

differences (ESD)


Protection Agency - Region 9)R09: (File)

2112749 8/9/2005

Newsclip: Public notice - EPA announces changes to

cleanup plan for San Gabriel Valley site (area 4),

Puente Valley OU

R09: (San Gabriel Valley Tribune)

2231737 8/30/2005

Ltr: Approves RA plan for Valley Boulevard

groundwater remediation dated 6/1/2005 - former

TRW/Benchmark Technology facility, 200 Turnbull

Canyon Rd, City of Industry, w/SLIC 2 mail checklist



Angeles Region)


Grumman Corp)

Page 74 of 88







event




event


Grumman Corp)



Angeles Region)

2222882 10/17/2005

Ltr: Groundwater monitoring results for 6/2005

monitoring event, Puente Valley OU, w/attchs, w/o

compact disc

R09: (Camp Dresser & McKee, Inc)R09: Barton, Dana (Environmental


2222886 1/1/2006Compact Disc: Intermediate zone (IZ) geophysical logs,

Puente Valley OU


- Region 9)

2222856 2/1/2006

Fact Sheet: EPA to oversee field work to install

groundwater cleanup system in Puente Valley area (in

English & Spanish)


- Region 9)

2225382 3/6/2006RD/RA workplan, Puente Valley OU intermediate zone

remedy (revised 3/6/2006)R09: (Camp Dresser & McKee, Inc)



2234080 3/7/2006

Ltr: Downgradient groundwater extraction system -

former Benchmark site, City of Industry, w/TL to D

Bacharowski

R09: (Orion Environmental, Inc)R09: Kwan, Joseph (Northrop

Grumman Corp)

2222878 3/10/2006


groundwater monitoring event, Puente Valley OU,

w/attchs, w/o compact disc



2231157 4/1/2006Annual groundwater monitoring & remediation

system status rpt, 11/2005, w/o compact disc



2231736 4/10/2006TL: Annual groundwater monitoring & remediation


R09: Sullivan, Amy (Northrop

Grumman Corp)



Angeles Region)

1102867 4/25/2006

Amended Consent Decree #CV-05-6022 ABC (FMOx)

for response actions & cost recovery, USA v Carrier

Corp, w/apps A-H

R09: (US Dept of Justice - Environment

& Natural Resources Div)

2231738 8/31/2006

Ltr: 2006/2007 annual estimation ltr for spills, leaks,

investigations & cleanups (SLIC) cost recovery program

- Benchmark Technology at 425 Turnbull Canyon Rd,

City of Industry, w/o attchs



Angeles Region)


Grumman Corp)

2231155 9/1/2006Groundwater monitoring rpt, Jun 2006 semiannual

event, w/o compact disc



Page 75 of 88







event


Grumman Corp)



Angeles Region)

2222881 10/25/2006



w/attchs, TL & compact disc



2222883 10/26/2006

Overheads: Intermediate zone RD/RA, Puente Valley

OU technical meeting on 10/26/06 (mtg handout),

w/marginalia re next quarterly meeting

2222884 10/26/2006Overheads: Shallow zone north of Puente Creek RD/RA

stakeholders meeting on 10/26/2006R09: (GeoTrans, Inc)

2225347 1/1/2007Aquifer testing & numerical modeling analysis, interim

shallow zone remedy, Puente Valley OU (draft)R09: (GeoTrans, Inc)

2231147 3/1/2007Groundwater monitoring rpt, Dec 2006 semiannual




2222880 3/30/2007



w/attchs & TL, w/o compact disc



2231726 3/31/2007TL: Groundwater monitoring rpt 12/2006 semiannual

event


Grumman Corp)



Angeles Region)

2222879 4/17/2007Conceptual/preliminary (30 percent) design rpt,

Puente Valley OU intermediate zone (IZ) remedyR09: (Camp Dresser & McKee, Inc)



2231153 6/1/2007Groundwater extraction well installation rpt - former

Benchmark site, City of IndustryR09: (Orion Environmental, Inc)



2231728 6/11/2007TL: Groundwater extraction well installation rpt -

former Benchmark site, City of Industry, CAO #89-034


Grumman Corp)

R09: Indermill, Don (CA Regional


Angeles Region)

2231729 7/9/2007


Board, Northrop Grumman, Orion Environmental &

Watermark re former Benchmark site







Page 76 of 88






2222888 9/17/2007



w/attchs & TL 9/18/2007, w/o compact disc




event


Grumman Corp)



Angeles Region)

2225379 10/31/2007

TL: Technical memo for installation of extraction wells,

intermediate zone remedy, Puente Valley OU dated

10/30/2007


Grumman Corp)



2222893 11/20/2007

Final RD workplan for installation of extraction wells,

intermediate zone remedy, Puente Valley OU, w/TL

11/21/2007 fr J Kwan to D Barton

R09: (Camp Dresser & McKee, Inc)R09: (Northrop Grumman Space &


2225333 11/28/2007

Extraction well completion rpt, interim shallow zone

remedy, Puente Valley OU, draft version - v 2,

appendix B, laboratory analytical rpts & chain of

custody records


2225398 11/28/2007Extraction well completion rpt, interim shallow zone

remedy, Puente Valley OU, draft version - v 1R09: (GeoTrans, Inc)

2225399 11/28/2007

Extraction well completion rpt, interim shallow zone

remedy, Puente Valley OU, draft version - v 3,

appendix F, data validation rpts


2225400 11/28/2007TL: Draft extraction well completion rpt, interim

shallow zone remedy, Puente Valley OUR09: Parsons, Scott (GeoTrans, Inc)



2225340 12/4/2007

Ltr: Bi-monthly progress rpt, reporting period 10/2007

& 11/2007, shallow zone interim RD/RA, Puente Valley

OU

R09: Parsons, Scott (GeoTrans, Inc)R09: Barton, Dana (Environmental


2225339 12/20/2007TL: Draft preliminary design & design basis rpt, interim

shallow zone remedy, Puente Valley OUR09: Parsons, Scott (GeoTrans, Inc)



2225397 12/20/2007Preliminary design & design basis rpt, interim shallow

zone remedy, Puente Valley OU, draft versionR09: (GeoTrans, Inc)

Page 77 of 88






2225346 1/18/2008

Ltr: Informs that GeoTrans revised draft groundwater

modeling analysis rpt & renamed rpt draft aquifer

testing & groundwater modeling analysis rpt, interim

shallow zone remedy, Puente Valley OU

R09: Parsons, Scott (GeoTrans, Inc)R09: Barton, Dana (Environmental


2231149 2/1/2008Groundwater monitoring rpt, Nov 2007 semiannual




2225378 3/14/2008

Compliance/general monitoring plan, intermediate

zone remedy, Puente Valley OU, w/appendix A, SAP,

appendix B, compliance & monitoring well network

plan & appendix C, groundwater modeling rpt

R09: (Camp Dresser & McKee, Inc)R09: (Northrop Grumman Space &


2215632 3/24/2008


groundwater monitoring event, Puente Valley OU -

compact disc only (appendix B, laboratory results)



2225390 3/24/2008

Ltr: Groundwater monitoring results for Jan 2008


w/attchs, w/o compact disc (appendix B, laboratory

results)



2225391 3/24/2008

TL: Groundwater monitoring results, 1/2008

groundwater monitoring event, intermediate zone

remedy for Puente Valley OU dated 3/24/2008


Grumman Corp)



2225881 4/28/2008Aquifer testing & numerical modeling analysis, interim

shallow zone remedy, Puente Valley OUR09: (GeoTrans, Inc)

2225342 5/1/2008Construction quality assurance plan (CQAP), Puente

Valley OUR09: (GeoTrans, Inc)

2225343 5/8/2008

Remedial construction health & safety plan (CHASP),

interim shallow zone remedy, Puente Valley OU, City

of Industry & La Puente, w/TL to D Barton


2225392 7/28/2008Pre-final design rpt, Puente Valley OU intermediate

zone remedy

R09: (Camp Dresser & McKee, Inc),




2231150 8/1/2008Groundwater monitoring rpt, May 2008 semiannual




Page 78 of 88






2225341 8/12/2008

Ltr: Informs that United Technologies Corp

(UTC/Carrier) intends to install wells MW6-20A &

MW6-20B, interim shallow zone remedy north of

Puente Creek, Puente Valley OU, w/o attchs

R09: Parsons, Scott (GeoTrans, Inc)R09: Burgner, Art (C N C

Engineering)


event


Grumman Corp)



Angeles Region)

2225384 9/30/2008

Dept of Public Health water supply permit policy 97-

005 documentation, Puente Valley OU intermediate

zone remedy, w/o compact discs


R09: (San Gabriel Valley Water Co),



2225373 10/20/2008

TL: Groundwater monitoring results, 8/2008

groundwater monitoring event, intermediate zone

remedy for Puente Valley OU dated 10/17/2008


Grumman Corp)

R09: Chavira, Raymond


Region 9)

1127238 10/21/2008

Ltr: Comments on draft regulatory evaluation for

future treated groundwater discharge at Puente Valley

OU by CH2M Hill dated 8/25/2008


Grumman Corp)



Region 9)



2225352 2/1/2009Design basis rpt, preliminary design, interim shallow

zone remedy, Puente Valley OU, w/appendicesR09: (GeoTrans, Inc)


Agency - Region 9)

2225351 2/16/2009

Response to comments re construction quality

assurance plan (CQAP), Puente Valley OU in draft

technical memo 11/5/2008 fr CH2M Hill


2231151 3/1/2009Groundwater monitoring rpt, Nov 2008 semiannual





event


Grumman Corp)



Angeles Region)

2231724 3/31/2009

Memo: NPDES quarterly monitoring rpt, 1st quarterly

2009 - Benchmark facility, 200 Turnbull Canyon Rd,

City of Industry, w/attch & marginalia


Grumman Corp)



Page 79 of 88






1127239 4/16/2009

Ltr: Response to EPA comments dated 2/2/2009 on

compliance/general monitoring plan (C/GMP) for

intermediate zone remedy, Puente Valley OU


& McKee, Inc), R09: Zych, Michele

(Camp Dresser & McKee, Inc)



Region 9)

2225357 4/21/2009Ltr: Transmits hardcopy & electronic copy of draft final

design submittal, Puente Valley OU, w/o attchsR09: Parsons, Scott (GeoTrans, Inc)



Region 9)

2225360 5/1/2009Design basis rpt, preliminary design, interim shallow

zone remedy, Puente Valley OUR09: (GeoTrans, Inc)

2225882 5/1/2009

Draft westernmost plume area monitoring well

completion rpt, interim shallow zone remedy, Puente

Valley OU


2225888 5/1/2009Draft mid-valley area monitoring well completion rpt,

interim shallow zone remedy, Puente Valley OUR09: (GeoTrans, Inc)

1127240 5/12/2009Ltr: Comments on delineation of shallow &

intermediate zones in Puente Valley OU, w/attchs


Grumman Corp)



Region 9)

1127241 5/13/2009Ltr: Comments on delineation between shallow zone &

intermediate zone in Puente Valley OU, w/o attch





Region 9)

2225393 5/20/2009Final design rpt, Puente Valley OU intermediate zone

remedy

R09: (Camp Dresser & McKee, Inc),




2225891 5/21/2009

Draft comprehensive shallow zone groundwater

monitoring & sampling rpt, 1st quarter 2009, Puente

Valley OU shallow zone, v 2 (appendix C, water

sampling field forms)


2225892 5/21/2009



Valley OU shallow zone, v 3 (appendix C, water

sampling field forms, continued)


2225893 5/21/2009



Valley OU shallow zone, v 1


Page 80 of 88






2225895 5/21/2009

Ltr: Transmits hardcopy & electronic copy of draft

comprehensive shallow zone groundwater monitoring

& sampling rpt, 1st quarter 2009, Puente Valley OU

shallow zone, w/o attchs




Region 9)

2225362 5/25/2009

Response to comments re revised pre-final design

submittal, interim shallow zone remedy, Puente Valley

OU, ref additional comments 3/18/2009 fr CH2M Hill


2225353 5/29/2009

Response to comments re construction quality

assurance plan (CQAP), Puente Valley OU in draft

technical memo 3/25/2009 fr CH2M Hill


2193768 5/29/2009

Email: Requests that Los Angles County expedite

processing of temporary right of way permits or

franchise agreements & approval of PV OU related

documents by 7/15/09

R09: Chavira, Raymond (Environmental

Protection Agency - Region 9)R09: Ball, Rex (Los Angeles County)

2193769 5/29/2009

Email: Expresses support for recommendation re Los

Angeles County expediting processing of temporary

right of way permits or franchise agreements &

approval of PV OU related documents, w/history

R09: Englund, Nicole



Region 9), R09: Ball, Rex (Los

Angeles County)



2225884 6/1/2009

Ltr: Transmits hardcopy & electronic copy of draft

westernmost plume area monitoring well completion

rpt, interim shallow zone remedy, Puente Valley OU

dated 5/2009, w/o attchs




Region 9)

2225890 6/1/2009

Ltr: Transmits hardcopy & electronic copy of draft mid-

valley area monitoring well completion rpt, interim

shallow zone remedy, Puente Valley OU dated 5/2009,

w/o attchs




Region 9)

2225354 6/2/2009

Ltr: Transmits hardcopy & electronic copy of

construction quality assurance plan (CQAP) dated

6/2009, w/o attchs




Region 9)

Page 81 of 88






2225359 6/2/2009

Ltr: Transmits hardcopy & electronic copy of 5/2009

design basis rpt, preliminary design, interim shallow

zone remedy, Puente Valley OU, w/o attchs




Region 9)

2225344 6/18/2009

Ltr: Transmits hardcopy & electronic copy of 6/18/09

revised response to comments table for design basis

rpt, interim shallow zone remedy, Puente Valley OU,

w/response to comments, w/o compact disc




Region 9)

2193765 6/18/2009

Email: Response to proposed agenda for 6/24/09

meeting between EPA, Los Angeles County, Northrop

Grumman & United Technologies Corp on permit

review & approval, w/history



R09: Chang, Grace (Los Angeles

County - Office of the County

Counsel)

1117793 6/24/2009 Overheads: Pipeline construction meetingR09: (Environmental Protection Agency

- Region 9)R09: (Los Angeles County)

1117789 7/21/2009

Ltr: Discusses final design rpt, Puente Valley OU

intermediate zone remedy dated 5/20/09 & transmits

CH2M Hill comments, w/o attch




Grumman Corp)

2231721 7/29/2009

Ltr: Comments on 6/17/2009 meeting between EPA &

Regional Board & selenium treatment standards, ref

Northrop Grumman Benchmark remedy, CAO 89-034,

w/site chronology 6/2002-6/2009



R09: Egoscue, Tracy (CA Regional


Angeles Region)

2193764 8/17/2009

Email: Brief update on construction activities (ref

Revised pipeline schedule for Los Angeles County

segments), w/history, w/o attch





Counsel)

1117787 8/31/2009

Ltr: Revocation of permit PCFL200801957, Puente

Valley OU intermediate zone remediation connection

to project #1114, unit 2, w/permit

R09: Farber, Gail (Los Angeles County -

Dept of Public Works), R09: Pestrella,

Mark (Los Angeles County - Dept of

Public Works)


Grumman Corp)

2193766 8/31/2009

Email: Request meeting with Los Angeles County staff

& counsel on pending right of way agreements &

permits submitted by Puente Valley OU work parties,

Northrop Grumman Corp & United Technologies Corp





Counsel)

Page 82 of 88










2193767 9/4/2009

Email: Requests that Los Angeles County Dept of

Public Works allow Northrop Grumman &

subcontractors complete pipeline installation with

expectation that storm drain connection will be done

at later time, w/history





Counsel)

2193762 9/15/2009Email: Overview of license agreement discussion with

Los Angeles County



R09: Maldonado, Lewis


Region 9)

2193763 9/15/2009

Email: Request for Los Angeles County Dept of Public

Works assistance & support to keep Puente Valley OU

project moving ahead (re LACDPW ltr of revocation to

Northrop Grumman Corp for utility crossing permit)



R09: Pestrella, Mark (Los Angeles

County - Dept of Public Works)

1117790 9/16/2009Mtg Agenda (Draft): EPA & Los Angeles County

coordination meeting, Puente Valley OU

R09: (Los Angeles County - Dept of

Public Works)


Agency - Region 9)

1117792 9/16/2009Overheads: Coordination meeting 2, County of Los

Angeles


- Region 9)R09: (Los Angeles County)

1117791 9/17/2009Flood Control District permit for water lines crossing

district storm drains, permit #PCFL 200801957


Public Works)R09: (Northrop Grumman Corp)

1117794 9/17/2009Excavation permit for pipeline construction, permit

#PCEX 200802231


Public Works)R09: (Northrop Grumman Corp)

2231160 9/17/2009 TL: Groundwater monitoring rpt 6/2009R09: Kwan, Joseph (Northrop

Grumman Corp)



Angeles Region)

1117798 9/24/2009

Administrative order directing compliance with

request for access, in matter of Los Angeles County &

Los Angeles County Flood Control District, CERCLA

docket #09-2009-13, w/map of site



R09: (Los Angeles County), R09: (Los

Angeles County - Flood Control

District)

Page 83 of 88






1117799 9/24/2009

Ltr: Transmits administrative order directing

compliance with request for access, in matter of Los

Angeles County & Los Angeles County Flood Control

District, CERCLA docket #09-2009-13, w/o attch



R09: Pestrella, Mark (Los Angeles

County - Dept of Public Works), R09:

(Los Angeles County - Board of

Supervisors)

2225395 9/30/2009

Compact Disc: Trojan UVPHOX submittal, final design

amendment for 1,4-Dioxane treatment system,

intermediate zone remediation system, Puente Valley

OU, City of Industry



2225396 9/30/2009

Compact Disc: Final design amendment for 1,4-

Dioxane treatment system, intermediate zone

remediation system, Puente Valley OU, City of Industry



2225364 10/14/2009

Comprehensive shallow zone groundwater monitoring

& sampling rpt, 2nd quarter 2009, Puente Valley OU,

w/o compact disc


2225368 10/14/2009



& sampling rpt, 2nd quarter 2009, Puente Valley OU,

w/o attchs




Region 9)

1127244 10/15/2009

Mtg Agenda (Draft): San Gabriel Valley Superfund sites

water issues stakeholder meeting on 10/15/09 at

Courtyard Marriott, Baldwin Park

1127494 11/2/2009

Ltr: Informs that preparation & submittal of

intermediate zone (IZ) remedy draft O&M manual has

been postponed due to suspension of IZ construction

activities, Puente Valley OU


Environmental, Inc)



Region 9)

2225885 11/24/2009


& sampling rpt, 3rd quarter 2009, Puente Valley OU

shallow zone, w/o compact disc (appendices C & D) &

oversized maps


2225887 11/24/2009



& sampling rpt, 3rd quarter 2009, Puente Valley OU





Region 9)

Page 84 of 88






1127226 12/9/2009Ltr: Bi-monthly progress rpt for 10/2009 & 11/2009,

Puente Valley OU intermediate zone (IZ) remedy


& McKee, Inc)



Region 9)

2225901 2/12/2010


& sampling rpt, 4th quarter 2009, Puente Valley OU

shallow zone, w/o compact disc (appendices C & D)


2225903 2/12/2010



& sampling rpt, 4th quarter 2009, Puente Valley OU





Region 9)

2225897 2/19/2010

TL: Electronic (CD) copy of bi-monthly progress rpts fr

2005 to Feb 2010, shallow zone interim RD/RA, Puente

Valley OU




Region 9)

2225896 2/19/2010Compact Disc: Bi-monthly progress rpts fr 2005 to Feb

2010, shallow zone interim RD/RA, Puente Valley OUR09: (GeoTrans, Inc)

2231159 3/4/2010

Ltr: Proposed lead agency transfer to EPA, ref former

TRW Inc/Benchmark Technology facility, 200 Turnbull

Canyon Rd, City of Industry, CAO #89-034

R09: Egoscue, Tracy (CA Regional


Angeles Region)


Grumman Corp)

2225385 3/5/2010

Ltr: Response to request in ltr 5/12/2009 to use

shallow zone performance containment criterion for

merged zone contamination, Puente Valley OU,

w/attchs




Grumman Corp)




& McKee, Inc)



Region 9)

2231158 5/19/2010

Ltr: Lead agency transfer to EPA, ref former TRW

Inc/Benchmark Technology facility, 200 Turnbull

Canyon Rd, City of Industry, CAO #89-034

R09: Unger, Samuel (CA Regional


Angeles Region)


Grumman Corp)




& McKee, Inc)



Region 9)

Page 85 of 88






1127249 7/22/2010

Ltr: Progress rpt #9, 1/1/2010-6/30/2010,

supplemental environmental project (SEP), ref

Woodland Duck Farm, consent decree #CV-05-6022

ABC (FMOx)

R09: Barquest, Bradley (United

Technologies Corp)



Region 9)

1127231 9/1/2010

Groundwater monitoring rpt, Jun 2010 semiannual



R09: (Northrop Grumman Systems

Corp)

1127229 9/13/2010Shallow zone groundwater monitoring & sampling rpt,

2nd quarter 2010, Puente Valley OU shallow zoneR09: (GeoTrans, Inc)

1127245 10/1/2010

Map: Well location map, mouth of valley, Puente

Valley OU (updated Oct 2010), color, 17 x 11 in, 1 in =

1000 ft




& McKee, Inc)



Region 9)

1127232 10/8/2010



OU, w/attchs




Region 9)

1127242 11/1/2010

Ltr: Responds to ltr 4/13/2010 fr J Kwan & informs that

EPA & Northrop are in agreement on assessment of

compliance in merged zone, Puente Valley OU, w/o

attchs




Grumman Corp)

1127246 11/1/2010Drawing: Cross section B-B', Puente Valley OU (draft,

color)R09: (C H 2 M Hill, Inc)

1127247 11/1/2010

Table re summary of compliance, sentinel &

monitoring wells, Puente Valley OU intermediate zone

remedy (with EPA responses dated 10/27/10)


1127234 12/9/2010



OU




Region 9)




& McKee, Inc)



Region 9)

Page 86 of 88






1127235 12/22/2010Groundwater monitoring & sampling rpt, 3rd quarter

2010, Puente Valley OUR09: (GeoTrans, Inc)

1127243 12/22/2010

Ltr: Follow-up fr Puente Valley OU meeting on

11/16/2010 re 1) locations & monitoring criteria for

intermediate zone monitoring wells L7 & L8; 2) need

for intermediate zone lateral compliance monitoring

wells L5 and L6..., w/o attchs




Grumman Corp)

1127248 1/26/2011

Ltr: Progress rpt #10, 7/1/2010-12/31/2010,

supplemental environmental project (SEP), ref

Woodland Duck Farm, consent decree #CV-05-6022

ABC (FMOx)


Technologies Corp)



Region 9)

1127495 1/28/2011

Ltr: Response to DTSC comments on draft FS

addendum for Puente Valley OU intermediate zone

remedy dated 5/4/2010


Grumman Corp)



Region 9)

1127496 2/9/2011



OU, w/attchs




Region 9)




& McKee, Inc)



Region 9)

1127500 2/28/2011Technical Memo: Review of Updated PVOU

groundwater flow model (draft)


Inc), R09: Sun, Kerang (C H 2 M Hill,

Inc)



Region 9)

1127501 2/28/2011

Email: EPA review of GeoTrans model update, w/o

attch (CH2M_Review-

Updated_GeoTrans_Model_28Feb2011-

LW3456_EPA.pdf)




Technologies Corp)

1127492 3/2/2011Final 1st 5-year review rpt, Puente Valley OU, w/apps

A-G


- Region 9)

1127493 3/2/2011Final 1st 5-year review rpt, Puente Valley OU, w/apps

A-G & erratum memo to EPA-9 fr CH2M Hill, 3/16/11


- Region 9)

1127508 3/15/2011Ltr: Requests extension for completion date of

supplemental environmental project


Technologies Corp)



Region 9)

Page 87 of 88






1127507 4/7/2011Ltr: Bi-monthly progress rpt (2/2011 - 3/2011), shallow

zone interim RD/RA, Puente Valley OUR09: Parsons, Scott (GeoTrans, Inc)



Region 9)

1127506 4/8/2011Ltr: Approval to extend supplemental environmental

project completion date




Technologies Corp)


Puente Valley OU, intermediate zone (IZ) remedy


& McKee, Inc)



Region 9)

1127503 4/15/2011

Ltr: Comments on Benchmark Technologies facility

semi-annual groundwater monitoring rpt, Puente

Valley OU

R09: Macnicholl, Peter (CA





Region 9)

1127504 4/19/2011Groundwater monitoring & sampling rpt, 4th quarter

2010, Puente Valley OU

R09: (GeoTrans, Inc), R09: (Tetra Tech,

Inc)


Agency - Region 9)

1127502 5/10/2011

Ltr: Response to comments on Draft technical memo

re review of updated PVOU groundwater model,

w/attch




Region 9)


Puente Valley OU, intermediate zone (IZ) remedy


& McKee, Inc)



Region 9)

1127499 6/10/2011Ltr: Bi-monthly progress rpt (4/2011 - 5/2011), shallow

zone interim RD/RA, Puente Valley OUR09: Parsons, Scott (GeoTrans, Inc)



Region 9)

Page 88 of 88

san gabriel valley (area 4) la puente, ca puente valley ou

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