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
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
La Puente, California
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)
R09: (CA Regional Water Quality
Control Board - Los Angeles Region)
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: Ziemba, Neil (Environmental
Protection Agency - Region 9)
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
R09: Ziemba, Neil (Environmental
Protection Agency - Region 9)R09: Ritchie, J (Maple Water Co, Inc)
Page 1 of 88
San Gabriel Valley (Area 4) Superfund Site
La Puente, California
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
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
Water Quality Control Board - Los
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
Water Quality Control Board - Los
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
Water Quality Control Board - Los
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
Regional Water Quality Control
Board - Los Angeles Region)
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
Water Quality Control Board - Los
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)
R09: Yacoub, Hank (CA Regional
Water Quality Control Board - Los
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)
R09: Nelson, Edward (Benchmark
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)
R09: Yacoub, Hank (CA Regional
Water Quality Control Board - Los
Angeles Region)
Page 2 of 88
San Gabriel Valley (Area 4) Superfund Site
La Puente, California
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
2232868 11/25/1986
Ltr: Acknowledges receipt of addendum to subsurface
investigation workplan dated 10/29/86 & approves
workplan as amended
R09: Yacoub, Hank (CA Regional Water
Quality Control Board - Los Angeles
Region)
R09: Nelson, Edward (Benchmark
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
R09: Garber, Lee (San Gabriel Valley
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
R09: Nelson, Edward (Benchmark
Technology, Inc)
R09: Chandler, Philip (CA Regional
Water Quality Control Board - Los
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)
R09: Chandler, Philip (CA Regional
Water Quality Control Board - Los
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
R09: (CA Regional Water Quality
Control Board - Los Angeles Region)
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
R09: Metcalf, Linda (Woodward-Clyde
Consultants)
R09: Chandler, Philip (CA Regional
Water Quality Control Board - Los
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
R09: Metcalf, Linda (Woodward-Clyde
Consultants)
R09: Chandler, Philip (CA Regional
Water Quality Control Board - Los
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
San Gabriel Valley (Area 4) Superfund Site
La Puente, California
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
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
R09: Nelson, Edward (Benchmark
Technology, Inc)
R09: Yacoub, Hank (CA Regional
Water Quality Control Board - Los
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
R09: Metcalf, Linda (Woodward-Clyde
Consultants)
R09: Chandler, Philip (CA Regional
Water Quality Control Board - Los
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
Quality Control Board - Los Angeles
Region)
R09: Nelson, Edward (Benchmark
Technology, Inc)
2232843 6/19/1987Ltr: Request for 2-week extension of 6/30/87 deadline
for modification of Benchmark workplan
R09: Metcalf, Linda (Woodward-Clyde
Consultants)
R09: Chandler, Philip (CA Regional
Water Quality Control Board - Los
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
R09: (CA Regional Water Quality
Control Board - Los Angeles Region)
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
R09: Metcalf, Linda (Woodward-Clyde
Consultants)
R09: Chandler, Philip (CA Regional
Water Quality Control Board - Los
Angeles Region)
2232664 10/22/1987
Ltr: Progress rpt, soil boring installation & 2nd round
of monitoring well sampling at Benchmark Technology,
w/attchs
R09: Metcalf, Linda (Woodward-Clyde
Consultants)
R09: Chandler, Philip (CA Regional
Water Quality Control Board - Los
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
San Gabriel Valley (Area 4) Superfund Site
La Puente, California
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
2232663 1/12/1988TL: Phase 2 final rpt, soil & groundwater investigation,
Benchmark Technology
R09: Metcalf, Linda (Woodward-Clyde
Consultants)
R09: Chandler, Philip (CA Regional
Water Quality Control Board - Los
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
R09: Metcalf, Linda (Woodward-Clyde
Consultants)
R09: Chandler, Philip (CA Regional
Water Quality Control Board - Los
Angeles Region)
2232858 2/26/1988
Ltr: Response to Regional Board review of phase 3
workplan at Benchmark Technology facility, w/figure
2A
R09: Metcalf, Linda (Woodward-Clyde
Consultants)
R09: Chandler, Philip (CA Regional
Water Quality Control Board - Los
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)
R09: Yacoub, Hank (CA Regional
Water Quality Control Board - Los
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
R09: Sakaida, Roy (CA Regional Water
Quality Control Board - Los Angeles
Region)
R09: Nelson, Edward (Benchmark
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
R09: Metcalf, Linda (Woodward-Clyde
Consultants)
R09: Chandler, Philip (CA Regional
Water Quality Control Board - Los
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
R09: Metcalf, Linda (Woodward-Clyde
Consultants)
R09: Chandler, Philip (CA Regional
Water Quality Control Board - Los
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
San Gabriel Valley (Area 4) Superfund Site
La Puente, California
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
2232850 6/6/1988
Memo: Laboratory rpt, 1 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)
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
R09: Sakaida, Roy (CA Regional Water
Quality Control Board - Los Angeles
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
R09: Northington, D (West Coast
Analytical Service, Inc), R09: Shelton,
Michael (West Coast Analytical Service,
Inc)
R09: Phung, Tan (Woodward-Clyde
Consultants)
2232853 6/21/1988Memo: Laboratory rpt, 8 water samples, analysis VOC
by EPA 624, 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)
2232852 6/27/1988Memo: Laboratory rpt, 12 soil samples, analysis VOC
by EPA 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)
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
by EPA 624, ref Benchmark site, w/attchs
R09: Hovanec, Michael (West Coast
Analytical Service, Inc), R09: Shelton,
Michael (West Coast Analytical Service,
Inc)
R09: Phung, Tan (Woodward-Clyde
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
R09: Metcalf, Linda (Woodward-Clyde
Consultants)
R09: Chandler, Philip (CA Regional
Water Quality Control Board - Los
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
R09: Metcalf, Linda (Woodward-Clyde
Consultants)
R09: Williams, Kay (Puente Hills
Landfill #6)
Page 6 of 88
San Gabriel Valley (Area 4) Superfund Site
La Puente, California
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
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
Benchmark site, w/attchs
R09: Metcalf, Linda (Woodward-Clyde
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
R09: Metcalf, Linda (Woodward-Clyde
Consultants)
R09: Chandler, Philip (CA Regional
Water Quality Control Board - Los
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
R09: Sakaida, Roy (CA Regional Water
Quality Control Board - Los Angeles
Region)
R09: Hartmann, James (Woodward-
Clyde Consultants)
10660 3/1/1989Newsclip: Funds due (LA Regional Water Quality
Control Board) for tracing tainted water sources
R09: Garber, Lee (San Gabriel Valley
Tribune)
2232668 3/31/1989
Ltr: Soil disposal requests, soil & groundwater
investigation at Benchmark Technology, City of
Industry, w/tables 1-3
R09: Metcalf, Linda (Woodward-Clyde
Consultants)
R09: Chandler, Philip (CA Regional
Water Quality Control Board - Los
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: (Woodward-Clyde Consultants)
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
R09: Ghirelli, Robert (CA Regional
Water Quality Control Board - Los
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
San Gabriel Valley (Area 4) Superfund Site
La Puente, California
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
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
R09: Sakaida, Roy (CA Regional Water
Quality Control Board - Los Angeles
Region)
R09: Metcalf, Linda (Woodward-
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
R09: Metcalf, Linda (Woodward-Clyde
Consultants)
R09: Chandler, Philip (CA Regional
Water Quality Control Board - Los
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
R09: Metcalf, Linda (Woodward-Clyde
Consultants)
R09: Chandler, Philip (CA Regional
Water Quality Control Board - Los
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)
R09: Chandler, Philip (CA Regional
Water Quality Control Board - Los
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
R09: Ghirelli, Robert (CA Regional
Water Quality Control Board - Los
Angeles Region)
R09: Barkley, Richard (Benchmark
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)
R09: Metcalf, Linda (Woodward-
Clyde Consultants)
2232652 6/27/1989
Ltr: Reviews phase 4 workplan for further
groundwater investigation at Benchmark Technology
facility received 4/27/89, ref CAO #89-034
R09: Sakaida, Roy (CA Regional Water
Quality Control Board - Los Angeles
Region)
R09: Barkley, Richard (Benchmark
Technology, Inc)
Page 8 of 88
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First Released 06-17-1997; Last Updated 09-16-2011in CHRONOLOGICAL order
Document ID Document Date Title Author Addressee
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)
R09: Metcalf, Linda (Woodward-
Clyde Consultants)
2192393 7/7/1989Table re phase 3 site assessment, groundwater quality
info, 2nd quarter 1989 (p 2 missing)
2232651 7/12/1989
Ltr: Request for extension of due date 8/1/89 for
submittal of soil & on-site groundwater remediation
workplan & off-site groundwater assessment workplan
for Benchmark Technology facility, ref CAO #89-034
R09: Metcalf, Linda (Woodward-Clyde
Consultants)
R09: Chandler, Philip (CA Regional
Water Quality Control Board - Los
Angeles Region)
2232650 7/14/1989
Ltr: Request for extension of due date 7/24/89 for
submittal of revised phase 4 groundwater
investigation workplan for Benchmark Technology
facility, City of Industry
R09: Metcalf, Linda (Woodward-Clyde
Consultants)
R09: Chandler, Philip (CA Regional
Water Quality Control Board - Los
Angeles Region)
2232649 7/18/1989
Ltr: Results of groundwater monitoring conducted in
6/89 at Benchmark Technology site, City of Industry,
w/attchs
R09: Metcalf, Linda (Woodward-Clyde
Consultants)
R09: Chandler, Philip (CA Regional
Water Quality Control Board - Los
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)
R09: Yacoub, Hank (CA Regional
Water Quality Control Board - Los
Angeles Region), R09: Chandler,
Philip (CA Regional Water Quality
Control Board - Los Angeles Region)
2232661 8/3/1989
Ltr: Revisions to 4/26/89 workplan for phase 4
groundwater investigation at Benchmark Technology
facility, City of Industry, w/figure 1, site plan
R09: Metcalf, Linda (Woodward-Clyde
Consultants)
R09: Chandler, Philip (CA Regional
Water Quality Control Board - Los
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
R09: Metcalf, Linda (Woodward-Clyde
Consultants)
R09: Chandler, Philip (CA Regional
Water Quality Control Board - Los
Angeles Region)
Page 9 of 88
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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
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
R09: Sakaida, Roy (CA Regional Water
Quality Control Board - Los Angeles
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
R09: Sakaida, Roy (CA Regional Water
Quality Control Board - Los Angeles
Region)
R09: Hintze, Frank (Benchmark
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
R09: Metcalf, Linda (Woodward-Clyde
Consultants)
R09: Chandler, Philip (CA Regional
Water Quality Control Board - Los
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
R09: Metcalf, Linda (Woodward-Clyde
Consultants)
R09: Chandler, Philip (CA Regional
Water Quality Control Board - Los
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)
R09: Chandler, Philip (CA Regional
Water Quality Control Board - Los
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
R09: White, Jay (Woodward-Clyde
Consultants)
R09: Chandler, Philip (CA Regional
Water Quality Control Board - Los
Angeles Region)
Page 10 of 88
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Puente Valley Operable Unit Administrative Record
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Document ID Document Date Title Author Addressee
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
R09: (Woodward-Clyde Consultants)
2232635 1/14/1990
Meeting Notes: Benchmark remediation program
meeting on 1/12/90 with Regional Board, w/sign-in
sheet (handwritten)
R09: Chandler, Philip (CA Regional
Water Quality Control Board - Los
Angeles Region)
2231144 2/22/1990Additional soil sampling at Benchmark Technology
facility, City of Industry, w/oversize drawingR09: (Woodward-Clyde Consultants)
R09: (Benchmark Holding Group),
R09: (T R W, Inc)
2232634 2/22/1990TL: Rpt of additional soil sampling at Benchmark
Technology facility, City of Industry
R09: White, Jay (Woodward-Clyde
Consultants)
R09: Chandler, Philip (CA Regional
Water Quality Control Board - Los
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
R09: (Woodward-Clyde Consultants)
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: (CA Regional Water Quality
Control Board - Los Angeles Region)
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)
R09: Chandler, Philip (CA Regional
Water Quality Control Board - Los
Angeles Region)
2232632 6/5/1990Sign-in sheet for 6/5/90 meeting between Regional
Board, Koll, TRW, Woodward-Clyde
Page 11 of 88
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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
2231138 6/27/1990Soil cleanup levels for Benchmark facility, City of
IndustryR09: (Woodward-Clyde Consultants)
R09: (Benchmark Holding Group),
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
R09: (Woodward-Clyde Consultants)
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: Kwan, Joseph (T R W, Inc)
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
Protection Agency - Region 9)
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
Protection Agency - Region 9)
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: Klaiman, Mark (Environmental
Protection Agency - Region 9)
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: Klaiman, Mark (Environmental
Protection Agency - Region 9)
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))
R09: Klaiman, Mark (Environmental
Protection Agency - Region 9)
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
Protection Agency - Region 9)
Page 12 of 88
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Document ID Document Date Title Author Addressee
2232626 8/22/1990Ltr: Informs that A Salhotra will send back-of-envelope
calculations, w/o attch (handwritten)
R09: Salhotra, Atul (Woodward-Clyde
Consultants)
R09: Chandler, Philip (CA Regional
Water Quality Control Board - Los
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)
R09: Chandler, Philip (CA Regional
Water Quality Control Board - Los
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
R09: White, Jay (Woodward-Clyde
Consultants)
R09: Chandler, Philip (CA Regional
Water Quality Control Board - Los
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)
R09: Chandler, Philip (CA Regional
Water Quality Control Board - Los
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
San Gabriel Valley (Area 4) Superfund Site
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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
2232620 11/26/1990 TL: Quarterly groundwater monitoring R09: Clark, John (T R W, Inc)
R09: Chandler, Philip (CA Regional
Water Quality Control Board - Los
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
R09: White, Jay (Woodward-Clyde
Consultants)
R09: Chandler, Philip (CA Regional
Water Quality Control Board - Los
Angeles Region)
32304 11/30/1990Final draft, quality assurance/quality control guidance
document, San Gabriel BasinR09: (C H 2 M Hill, Inc)
R09: (Environmental Protection
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)
R09: Chandler, Philip (CA Regional
Water Quality Control Board - Los
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
R09: White, Jay (Woodward-Clyde
Consultants)
R09: Chandler, Philip (CA
Environmental Protection Agency -
Dept of Toxic Substances Control)
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
R09: Niemeyer, Linda (Woodward-
Clyde Consultants)
R09: Chandler, Philip (CA Regional
Water Quality Control Board - Los
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)
R09: Chandler, Philip (CA Regional
Water Quality Control Board - Los
Angeles Region)
Page 14 of 88
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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
2232001 2/19/1991
Meeting Agenda: Benchmark RA program project
status review meeting on 2/19/91 with Regional
Board, w/marginalia
R09: (Woodward-Clyde Consultants)
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]
R09: White, Jay (Woodward-Clyde
Consultants)
R09: Chandler, Philip (CA Regional
Water Quality Control Board - Los
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)
R09: Niemeyer, Linda (Woodward-
Clyde Consultants)
R09: Chandler, Philip (CA Regional
Water Quality Control Board - Los
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)
R09: Niemeyer, Linda (Woodward-
Clyde Consultants)
R09: Chandler, Philip (CA Regional
Water Quality Control Board - Los
Angeles Region)
2231997 2/28/1991Ltr: Laboratory rpt for water sample, Benchmark
project, w/attch (faxed)R09: Pang, Kam (C K Y, Inc)
R09: White, Jay (Woodward-Clyde
Consultants)
2231996 3/1/1991
Ltr: Request for discharge of uncontaminated
rainwater fr Benchmark remediation site into storm
drain, City of Industry
R09: White, Jay (Woodward-Clyde
Consultants)
R09: Chandler, Philip (CA Regional
Water Quality Control Board - Los
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
R09: White, Jay (Woodward-Clyde
Consultants)
R09: Chandler, Philip (CA Regional
Water Quality Control Board - Los
Angeles Region)
2231994 3/5/1991 TL: __ (faxed, handwritten)
R09: Chandler, Philip (CA Regional
Water Quality Control Board - Los
Angeles Region)
R09: White, Jay (Woodward-Clyde
Consultants)
2231990 3/8/1991TL: Quarterly groundwater monitoring rpt -
Benchmark Technology site, City of IndustryR09: Clark, John (T R W, Inc)
R09: Chandler, Philip (CA Regional
Water Quality Control Board - Los
Angeles Region)
2231991 3/8/1991
Meeting Agenda: Benchmark RA program project
status review meeting on 3/8/91 with Regional Board,
w/marginalia
R09: (Woodward-Clyde Consultants)
Page 15 of 88
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Document ID Document Date Title Author Addressee
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)
R09: White, Jay (Woodward-Clyde
Consultants)
R09: Chandler, Philip (CA Regional
Water Quality Control Board - Los
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)
R09: Chandler, Philip (CA Regional
Water Quality Control Board - Los
Angeles Region)
2231985 3/22/1991
Meeting Agenda: Benchmark RA program project
status review meeting on 3/22/91 with Regional
Board, w/marginalia & handwritten notes
R09: (Woodward-Clyde Consultants)
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
R09: Niemeyer, Linda (Woodward-
Clyde Consultants)
R09: Chandler, Philip (CA Regional
Water Quality Control Board - Los
Angeles Region)
2231983 4/5/1991
Meeting Agenda: Benchmark RA program project
status review meeting on 4/5/91 with Regional Board,
w/maps re chrome sampling locations
R09: (Woodward-Clyde Consultants)
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
R09: White, Jay (Woodward-Clyde
Consultants)
R09: Chandler, Philip (CA Regional
Water Quality Control Board - Los
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)
R09: Chandler, Philip (CA Regional
Water Quality Control Board - Los
Angeles Region)
2231979 6/18/1991TL: Quarterly groundwater monitoring rpt, 2nd quarter
1991R09: Kwan, Joseph (T R W, Inc)
R09: Chandler, Philip (CA Regional
Water Quality Control Board - Los
Angeles Region)
Page 16 of 88
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First Released 06-17-1997; Last Updated 09-16-2011in CHRONOLOGICAL order
Document ID Document Date Title Author Addressee
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)
R09: Chandler, Philip (CA Regional
Water Quality Control Board - Los
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
R09: Chandler, Philip (CA Regional
Water Quality Control Board - Los
Angeles Region)
R09: (File)
2234113 9/11/1991
Meeting Agenda: Benchmark RA program project
status review meeting on 9/11/91 with Regional
Board, w/marginalia & handwritten notes
R09: (Woodward-Clyde Consultants)
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
Quality Control Board - Los Angeles
Region)
R09: White, Jay (Woodward-Clyde
Consultants)
2231975 9/26/1991Ltr: Laboratory rpt for water samples, project
Benchmark, w/attchsR09: Pang, Kam (C K Y, Inc)
R09: White, Jay (Woodward-Clyde
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
R09: White, Jay (Woodward-Clyde
Consultants)
R09: Chandler, Philip (CA Regional
Water Quality Control Board - Los
Angeles Region)
2192394 10/10/1991Table re phase 3 site assessment, groundwater quality
info, 1991
2192395 10/10/1991Table re phase 3 site assessment, water elevations at
monitoring wells
2231972 10/18/1991
Meeting Agenda: Benchmark RA program project
status review meeting on 10/18/91 with Regional
Board, w/marginalia
R09: (Woodward-Clyde Consultants)
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
R09: Kwan, Joseph (T R W, Inc)
R09: Chandler, Philip (CA Regional
Water Quality Control Board - Los
Angeles Region)
Page 17 of 88
San Gabriel Valley (Area 4) Superfund Site
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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
2231971 10/25/1991 Memo: Transmits STLC results, w/attch (faxed) R09: Kwan, Joseph (T R W, Inc)
R09: Chandler, Philip (CA Regional
Water Quality Control Board - Los
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
R09: Yacoub, Hank (CA Regional Water
Quality Control Board - Los Angeles
Region)
R09: Kwan, Joseph (T R W, Inc)
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)
R09: Chandler, Philip (CA Regional
Water Quality Control Board - Los
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: Kwan, Joseph (T R W, Inc)
R09: Gonzales, Juan (CA Regional
Water Quality Control Board - Los
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
R09: Kwan, Joseph (T R W, Inc)
R09: Chandler, Philip (CA Regional
Water Quality Control Board - Los
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: Kwan, Joseph (T R W, Inc)
R09: Gonzales, Juan (CA Regional
Water Quality Control Board - Los
Angeles Region)
Page 18 of 88
San Gabriel Valley (Area 4) Superfund Site
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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
2231963 3/30/1992TL: Quarterly groundwater monitoring rpt, 1st quarter
1992R09: Sullivan, Amy (T R W, Inc)
R09: Chandler, Philip (CA Regional
Water Quality Control Board - Los
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
R09: White, Jay (Woodward-Clyde
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
Canyon Rd, City of Industry
R09: Mulligan, Steve (I D
Environmental Assoc, Inc)
R09: Chandler, Philip (CA Regional
Water Quality Control Board - Los
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
R09: Niemeyer, Linda (Woodward-
Clyde Consultants)
R09: Chandler, Philip (CA Regional
Water Quality Control Board - Los
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)
R09: Chandler, Philip (CA Regional
Water Quality Control Board - Los
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)
R09: Chandler, Philip (CA Regional
Water Quality Control Board - Los
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
R09: Kwan, Joseph (T R W, Inc)
R09: Chandler, Philip (CA Regional
Water Quality Control Board - Los
Angeles Region)
2231795 1/4/1993
TL: Quarterly groundwater monitoring rpt, 4th quarter
1992 - Benchmark remediation site, 200 S Turnbull
Canyon Rd, City of Industry
R09: Mulligan, Steve (I D
Environmental Assoc, Inc)
R09: Chandler, Philip (CA Regional
Water Quality Control Board - Los
Angeles Region)
2231796 1/4/1993
TL: Quarterly groundwater monitoring rpt, 3rd quarter
1992 - Benchmark remediation site, 200 S Turnbull
Canyon Rd, City of Industry
R09: Mulligan, Steve (I D
Environmental Assoc, Inc)
R09: Chandler, Philip (CA Regional
Water Quality Control Board - Los
Angeles Region)
18771 1/14/1993Technical memo: Area 6 monitoring well installation &
sampling, San Gabriel area 6 RIR09: (C H 2 M Hill, Inc)
R09: (Environmental Protection
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]
R09: Chandler, Philip (CA Regional
Water Quality Control Board - Los
Angeles Region)
R09: Kwan, Joseph (T R W, Inc)
Page 19 of 88
San Gabriel Valley (Area 4) Superfund Site
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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
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
Protection Agency - Region 9)
R09: Lee, Will (San Gabriel Valley
Economic Council)
2234079 3/1/1993
Quarterly groundwater monitoring rpt, 1st quarter
1993 - Benchmark remediation site, 200 S Turnbull
Canyon Rd, City of Industry
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)
R09: (Environmental Protection
Agency - Region 9)
2231792 5/24/1993
TL: Quarterly groundwater monitoring rpt, 1st quarter
1993 - Benchmark remediation site, 200 S Turnbull
Canyon Rd, City of Industry
R09: Mulligan, Steve (I D
Environmental Assoc, Inc)
R09: Chandler, Phil (CA Regional
Water Quality Control Board - Los
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)
R09: Klaiman, Mark (Environmental
Protection Agency - Region 9)
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
Steering Committee), R09: (T R W, Inc)
R09: Ramsey, Phillip (Environmental
Protection Agency - Region 9)
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
R09: Kwan, Joseph (Puente Valley
Steering Committee), R09: (T R W, Inc)
R09: Ramsey, Phillip (Environmental
Protection Agency - Region 9)
13647 8/20/1993
Ltr: Clarification on EPA's position on major RI
requirements for Puente Valley OU that need
immediate settlement
R09: Ramsey, Phillip (Environmental
Protection Agency - Region 9)R09: Kwan, Joseph (T R W, Inc)
2231793 8/20/1993
TL: Quarterly groundwater monitoring rpt, 2nd quarter
1993 - Benchmark remediation site, 200 S Turnbull
Canyon Rd, City of Industry
R09: (T R W, Inc)
R09: Chandler, Phil (CA Regional
Water Quality Control Board - Los
Angeles Region)
Page 20 of 88
San Gabriel Valley (Area 4) Superfund Site
La Puente, California
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
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
R09: Kwan, Joseph (Puente Valley
Steering Committee), R09: (T R W, Inc)
R09: Ramsey, Phillip (Environmental
Protection Agency - Region 9)
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
R09: Chandler, Philip (CA Regional
Water Quality Control Board - Los
Angeles Region)
R09: Kwan, Joseph (T R W, Inc)
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
R09: Chandler, Philip (CA Regional
Water Quality Control Board - Los
Angeles Region)
R09: (Environmental Protection
Agency - Region 9)
9645 9/1/1993Ltr: Transmittal of Puente Valley Steering Committee
members list as of 9/1/93, w/attch
R09: Walter, Robert (Puente Valley
Steering Committee), R09: (T R W, Inc)
R09: Klaiman, Mark (Environmental
Protection Agency - Region 9)
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
R09: Kwan, Joseph (Puente Valley
Steering Committee), R09: (T R W, Inc)
R09: Ramsey, Phillip (Environmental
Protection Agency - Region 9)
25660 9/3/1993Unilateral administrative order for partial RI, docket
#93-23, w/TL 9/3/93 to H Gantz fr K Takata
R09: Zelikson, Jeff (Environmental
Protection Agency - Region 9)
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: Zelikson, Jeff (Environmental
Protection Agency - Region 9)
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: Klaiman, Mark (Environmental
Protection Agency - Region 9)
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
San Gabriel Valley (Area 4) Superfund Site
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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
13646 9/10/1993Ltr: Comments on redlined SOW for Puente Valley
interim RI/FS 9/3/93
R09: Ramsey, Phillip (Environmental
Protection Agency - Region 9)
R09: Kwan, Joseph (Puente Valley
Steering Committee), R09: (T R W,
Inc)
2231786 9/14/1993
Sign-in sheet for 9/14/93 meeting between Regional
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
R09: Kwan, Joseph (Puente Valley
Steering Committee), R09: (T R W, Inc)
R09: Ramsey, Phillip (Environmental
Protection Agency - Region 9)
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]
R09: Chandler, Philip (CA Regional
Water Quality Control Board - Los
Angeles Region)
R09: Hintze, Frank (Benchmark
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]
R09: Chandler, Philip (CA Regional
Water Quality Control Board - Los
Angeles Region)
R09: Hintze, Frank (Benchmark
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)
R09: (Environmental Protection Agency
- Region 9)
2231783 10/4/1993TL: Quarterly groundwater monitoring rpt, 3rd quarter
1993 - Benchmark remediation site, City of Industry
R09: Mulligan, Steve (I D
Environmental Assoc, Inc)
R09: Chandler, Philip (CA Regional
Water Quality Control Board - Los
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
San Gabriel Valley (Area 4) Superfund Site
La Puente, California
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
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))
R09: Chandler, Philip (CA Regional
Water Quality Control Board - Los
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))
R09: Klaiman, Mark (Environmental
Protection Agency - Region 9)
13616 10/22/1993
Ltr: Notification that consulting firm Camp Dresser &
McKee Inc has been retained to perform Puente Valley
RI/FS
R09: Walter, Robert (Puente Valley
Steering Committee), R09: (T R W, Inc)
R09: Klaiman, Mark (Environmental
Protection Agency - Region 9)
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))
R09: Klaiman, Mark (Environmental
Protection Agency - Region 9)
13615 11/2/1993
Ltr: Expression of concerns re methodology &
conclusions in draft risk assessment & request for
meeting prior to EPA finalizing document
R09: Walter, Robert (Puente Valley
Steering Committee), R09: (T R W, Inc)
R09: Zelikson, Jeff (Environmental
Protection Agency - Region 9)
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)
R09: Niemeyer, Linda (Woodward-
Clyde Consultants)
R09: Chandler, Philip (CA Regional
Water Quality Control Board - Los
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
R09: Ramsey, Phillip (Environmental
Protection Agency - Region 9)R09: Kwan, Joseph (T R W, Inc)
13648 11/23/1993Ltr: Initial review of Puente Valley Steering
Committee's interim RI/FS planning documents
R09: Ramsey, Phillip (Environmental
Protection Agency - Region 9)R09: Kwan, Joseph (T R W, Inc)
Page 23 of 88
San Gabriel Valley (Area 4) Superfund Site
La Puente, California
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
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
R09: Kwan, Joseph (Puente Valley
Steering Committee), R09: (Camp
Dresser & McKee, Inc)
R09: Ramsey, Phillip (Environmental
Protection Agency - Region 9)
2234068 12/27/1993TL: Quarterly groundwater monitoring rpt, 4th quarter
1993 - Benchmark remediation site, City of Industry
R09: Mulligan, Steve (I D
Environmental Assoc, Inc)
R09: Kaumeyer, Rick (CA Regional
Water Quality Control Board - Los
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
Protection Agency - Region 9)
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
R09: Ramsey, Phillip (Environmental
Protection Agency - Region 9)R09: Kwan, Joseph (T R W, Inc)
14326 1/10/1994
Ltr: Transmittal of Puente Valley Steering Committee
interim shallow groundwater monitoring network
workplan, w/attch
R09: Chamberlin, David (Camp Dresser
& McKee, Inc)
R09: Ramsey, Phillip (Environmental
Protection Agency - Region 9)
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
R09: Kwan, Joseph (Puente Valley
Steering Committee), R09: (T R W, Inc)
R09: Ramsey, Phillip (Environmental
Protection Agency - Region 9)
15303 1/21/1994
Ltr: Notification that Puente Valley Steering
Committee's interim shallow groundwater monitoring
network workplan 1/10/94 has been rejected
R09: Ramsey, Phillip (Environmental
Protection Agency - Region 9)R09: Kwan, Joseph (T R W, Inc)
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
R09: Chamberlin, David (Camp Dresser
& McKee, Inc)
R09: Ramsey, Phillip (Environmental
Protection Agency - Region 9)
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
San Gabriel Valley (Area 4) Superfund Site
La Puente, California
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
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)
R09: (Puente Valley Steering
Committee)
95 2/1/1994Data management plan, Puente Valley OU interim
RI/FSR09: (Camp Dresser & McKee, Inc)
R09: (Puente Valley Steering
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)
R09: (Puente Valley Steering
Committee)
14327 2/14/1994
Ltr: Transmittal of Puente Valley Steering Committee
revised interim shallow groundwater monitoring
network workplan (initial date 1/10/94, revised date
2/14/94), w/attch
R09: Chamberlin, David (Camp Dresser
& McKee, Inc)
R09: Ramsey, Phillip (Environmental
Protection Agency - Region 9)
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)
R09: Ramsey, Phillip (Environmental
Protection Agency - Region 9)
14329 2/24/1994Ltr: Transmittal of monthly status rpt 1/94, Puente
Valley OU RI/FS, w/attch
R09: Kwan, Joseph (Puente Valley
Steering Committee), R09: (T R W, Inc)
R09: Ramsey, Phillip (Environmental
Protection Agency - Region 9)
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
R09: Ramsey, Phillip (Environmental
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)
R09: (Environmental Protection
Agency - Region 9)
15348 3/4/1994
Ltr: Comments on Puente Valley Steering Committee's
revised interim shallow groundwater monitoring
network workplan dated 2/14/94
R09: Ramsey, Phillip (Environmental
Protection Agency - Region 9)R09: Kwan, Joseph (T R W, Inc)
53 3/9/1994
Ltr: Response to EPA ltr 3/4/94 re EPA review of
revised interim shallow groundwater monitoring
network (ISGMN) workplan 2/14/94
R09: Kwan, Joseph (Puente Valley
Steering Committee), R09: (T R W, Inc)
R09: Ramsey, Phillip (Environmental
Protection Agency - Region 9)
Page 25 of 88
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Document ID Document Date Title Author Addressee
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
R09: Ramsey, Phillip (Environmental
Protection Agency - Region 9)
R09: Kwan, Joseph (Puente Valley
Steering Committee), R09: (T R W,
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)
R09: Ramsey, Phillip (Environmental
Protection Agency - Region 9)
2232615 4/4/1994TL: Quarterly groundwater monitoring rpt, 1st quarter
1994
R09: Mulligan, Steve (I D
Environmental Assoc, Inc)
R09: Kaumeyer, Rick (CA Regional
Water Quality Control Board - Los
Angeles Region)
2232616 4/12/1994 TL: Groundwater RA plan R09: (Woodward-Clyde Consultants)
R09: Kaumeyer, Rick (CA Regional
Water Quality Control Board - Los
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
R09: Chamberlin, David (Camp Dresser
& McKee, Inc)
R09: Ramsey, Phillip (Environmental
Protection Agency - Region 9)
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
R09: Ramsey, Phillip (Environmental
Protection Agency - Region 9)R09: Rabkin, Susan (Diversey Corp)
15349 5/18/1994Ltr: Evaluation of San Jose Creek subdrain as
contaminant migration pathway
R09: Kwan, Joseph (Puente Valley
Steering Committee), R09: (T R W, Inc)
R09: Ramsey, Phillip (Environmental
Protection Agency - Region 9)
Page 26 of 88
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Document ID Document Date Title Author Addressee
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
R09: Chamberlin, David (Camp Dresser
& McKee, Inc)
R09: Ramsey, Phillip (Environmental
Protection Agency - Region 9)
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
R09: Chamberlin, David (Camp Dresser
& McKee, Inc)
R09: Ramsey, Phillip (Environmental
Protection Agency - Region 9)
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)
R09: Chamberlin, David (Camp Dresser
& McKee, Inc)
R09: Ramsey, Phillip (Environmental
Protection Agency - Region 9)
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)
R09: Chamberlin, David (Camp Dresser
& McKee, Inc)
R09: Ramsey, Phillip (Environmental
Protection Agency - Region 9)
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: Klaiman, Mark (Environmental
Protection Agency - Region 9)
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
R09: Alai, Jenifer (Camp Dresser &
McKee, Inc)
R09: Ramsey, Phillip (Environmental
Protection Agency - Region 9)
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
Protection Agency - Region 9)R09: Kwan, Joseph (T R W, Inc)
Page 27 of 88
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First Released 06-17-1997; Last Updated 09-16-2011in CHRONOLOGICAL order
Document ID Document Date Title Author Addressee
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
R09: Freudenberger, Richard
(Environmental Strategies Corp)
R09: Ramsey, Phillip (Environmental
Protection Agency - Region 9)
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
R09: Ramsey, Phillip (Environmental
Protection Agency - Region 9)R09: Kwan, Joseph (T R W, Inc)
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
R09: Walter, Robert (Puente Valley
Steering Committee), R09: (T R W, Inc)
R09: Ramsey, Phillip (Environmental
Protection Agency - Region 9)
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
R09: Ramsey, Phillip (Environmental
Protection Agency - Region 9)R09: Kwan, Joseph (T R W, Inc)
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
R09: Kwan, Joseph (Puente Valley
Steering Committee), R09: (T R W, Inc)
R09: Ramsey, Phillip (Environmental
Protection Agency - Region 9)
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
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First Released 06-17-1997; Last Updated 09-16-2011in CHRONOLOGICAL order
Document ID Document Date Title Author Addressee
15352 7/12/1994
Ltr: Scope of investigation & data analysis activities for
assessment of San Jose Creek subdrain as potential
contaminant migration pathway
R09: Kwan, Joseph (Puente Valley
Steering Committee), R09: (T R W, Inc)
R09: Ramsey, Phillip (Environmental
Protection Agency - Region 9)
15351 7/15/1994
Ltr: Transmittal of revisions to interim shallow
groundwater sampling for cluster well siting rpt
5/5/94, w/attchs
R09: Chamberlin, David (Camp Dresser
& McKee, Inc)
R09: Ramsey, Phillip (Environmental
Protection Agency - Region 9)
2232614 7/19/1994TL: Quarterly groundwater monitoring rpt, 2nd quarter
1994
R09: Mulligan, Steve (I D
Environmental Assoc, Inc)
R09: Kaumeyer, Rick (CA Regional
Water Quality Control Board - Los
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
R09: (C H 2 M Hill, Inc)
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
R09: Ramsey, Phillip (Environmental
Protection Agency - Region 9)R09: Kwan, Joseph (T R W, Inc)
15291 8/12/1994Ltr: Proposal of alternative locations for monitoring
well cluster MW6-3, w/figure 1, potential locations
R09: Freudenberger, Richard
(Environmental Strategies Corp)
R09: Ramsey, Phillip (Environmental
Protection Agency - Region 9)
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
R09: Ramsey, Phillip (Environmental
Protection Agency - Region 9)R09: Rabkin, Susan (Diversey Corp)
14673 8/25/1994Ltr: Request for approval to install 4-inch diameter
well casing instead of 6-inch in FSP
R09: Chamberlin, David (Camp Dresser
& McKee, Inc)
R09: Ramsey, Phillip (Environmental
Protection Agency - Region 9)
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
R09: Chamberlin, David (Camp Dresser
& McKee, Inc)
R09: Ramsey, Phillip (Environmental
Protection Agency - Region 9)
14635 8/29/1994
Ltr: Transmittal of responses to 8/9/94 EPA comments
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)
R09: Chamberlin, David (Camp Dresser
& McKee, Inc)
R09: Ramsey, Phillip (Environmental
Protection Agency - Region 9)
Page 29 of 88
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Document ID Document Date Title Author Addressee
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
R09: Alai, Jenifer (Camp Dresser &
McKee, Inc)
R09: Ramsey, Phillip (Environmental
Protection Agency - Region 9)
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
R09: Freudenberger, Richard
(Environmental Strategies Corp)
R09: Ramsey, Phillip (Environmental
Protection Agency - Region 9)
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
R09: Ramsey, Phillip (Environmental
Protection Agency - Region 9)R09: Kwan, Joseph (T R W, Inc)
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
Protection Agency - Region 9)
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
R09: Freudenberger, Richard
(Environmental Strategies Corp)
R09: Ramsey, Phillip (Environmental
Protection Agency - Region 9)
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
R09: Alai, Jenifer (Camp Dresser &
McKee, Inc)
R09: Ramsey, Phillip (Environmental
Protection Agency - Region 9)
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]
R09: Ghirelli, Robert (CA Regional
Water Quality Control Board - Los
Angeles Region)
R09: Kwan, Joseph (T R W, Inc)
15210 9/27/1994Ltr: Transmittal of monthly status rpt 2/94-9/94,
Puente Valley OU RI/FS, w/attch
R09: Chamberlin, David (Camp Dresser
& McKee, Inc)
R09: Ramsey, Phillip (Environmental
Protection Agency - Region 9)
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
Protection Agency - Region 9)
Page 30 of 88
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Document ID Document Date Title Author Addressee
2234076 10/4/1994TL: Quarterly groundwater monitoring rpt, 3rd quarter
1994
R09: Mulligan, Steve (I D
Environmental Assoc, Inc)
R09: Nupen, Eric (CA Regional Water
Quality Control Board - Los Angeles
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
R09: Kwan, Joseph (T R W, Inc)
R09: Nupen, Eric (CA Regional Water
Quality Control Board - Los Angeles
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
Protection Agency - Region 9)
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)
R09: Ramsey, Phillip (Environmental
Protection Agency - Region 9)
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: Marcus, Felicia (Environmental
Protection Agency - Region 9)
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: Marcus, Felicia (Environmental
Protection Agency - Region 9)
R09: Ferrero, John (City of Industry -
Office of the Mayor)
15203 10/31/1994Ltr: Transmittal of monthly status rpt 10/94, Puente
Valley OU RI/FS, w/attch
R09: Chamberlin, David (Camp Dresser
& McKee, Inc)
R09: Ramsey, Phillip (Environmental
Protection Agency - Region 9)
15204 10/31/1994Ltr: Approval of revised field sampling plan (FSP) for
Puente Valley OU MW6-3, ref UAO #93-23
R09: Ramsey, Phillip (Environmental
Protection Agency - Region 9)R09: Rabkin, Susan (Diversey Corp)
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)
R09: Ramsey, Phillip (Environmental
Protection Agency - Region 9)
Page 31 of 88
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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
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
R09: (Environmental Strategies Corp) R09: (Diversey Corp)
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
R09: Lovenburg, John (C H 2 M Hill, Inc)R09: Ramsey, Phillip (Environmental
Protection Agency - Region 9)
15211 11/30/1994Ltr: Transmittal of monthly status rpt 11/94, Puente
Valley OU RI/FS, w/attch
R09: Chamberlin, David (Camp Dresser
& McKee, Inc)
R09: Ramsey, Phillip (Environmental
Protection Agency - Region 9)
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)
R09: Ramsey, Phillip (Environmental
Protection Agency - Region 9)
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
R09: Mahan, Lisa (Camp Dresser &
McKee, Inc)
R09: Nupen, Eric (CA Regional Water
Quality Control Board - Los Angeles
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
R09: Walter, Robert (Puente Valley
Steering Committee), R09: (T R W, Inc)
R09: Ramsey, Phillip (Environmental
Protection Agency - Region 9)
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
R09: Wallin, Sharon (Camp Dresser &
McKee, Inc)
R09: Ramsey, Phillip (Environmental
Protection Agency - Region 9)
17023 12/29/1994Ltr: Transmittal of monthly status rpt 12/94, Puente
Valley OU RI/FS, w/attch
R09: Chamberlin, David (Camp Dresser
& McKee, Inc)
R09: Ramsey, Phillip (Environmental
Protection Agency - Region 9)
Page 32 of 88
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First Released 06-17-1997; Last Updated 09-16-2011in CHRONOLOGICAL order
Document ID Document Date Title Author Addressee
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
R09: Wallin, Sharon (Camp Dresser &
McKee, Inc)
R09: Ramsey, Phillip (Environmental
Protection Agency - Region 9)
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
R09: Ramsey, Phillip (Environmental
Protection Agency - Region 9)R09: Kwan, Joseph (T R W, Inc)
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
R09: Lovenburg, John (C H 2 M Hill, Inc)R09: Ramsey, Phillip (Environmental
Protection Agency - Region 9)
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
R09: Freudenberger, Richard
(Environmental Strategies Corp)
R09: Ramsey, Phillip (Environmental
Protection Agency - Region 9)
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
Memo: Trip rpt #13, EPA oversight of Puente Valley
OU field activities at monitoring well MW 641 on
1/24/95
R09: Lovenburg, John (C H 2 M Hill, Inc)R09: Ramsey, Phillip (Environmental
Protection Agency - Region 9)
16770 1/31/1995
Memo: Trip rpt #14, EPA oversight of Puente Valley
OU field activities at production well SWS 123 on
1/27/95
R09: Lovenburg, John (C H 2 M Hill, Inc)R09: Ramsey, Phillip (Environmental
Protection Agency - Region 9)
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
R09: Freudenberger, Richard
(Environmental Strategies Corp)
R09: Ramsey, Phillip (Environmental
Protection Agency - Region 9)
Page 33 of 88
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Document ID Document Date Title Author Addressee
18835 1/31/1995Ltr: Transmittal of monthly status rpt 1/95, Puente
Valley OU RI/FS, w/attch
R09: Chamberlin, David (Camp Dresser
& McKee, Inc)
R09: Ramsey, Phillip (Environmental
Protection Agency - Region 9)
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: Ramsey, Phillip (Environmental
Protection Agency - Region 9)
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
R09: Lau, Nathan (Environmental
Protection Agency - Region 9)R09: Walter, Robert (T R W, Inc)
2232611 2/7/1995TL: Quarterly groundwater monitoring rpt, 4th quarter
1994
R09: Mulligan, Steve (I D
Environmental Assoc, Inc)
R09: Nupen, Eric (CA Regional Water
Quality Control Board - Los Angeles
Region)
16895 2/15/1995
Ltr: Transmittal of responses to 1/5/95 EPA comments
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
R09: Chamberlin, David (Camp Dresser
& McKee, Inc)
R09: Ramsey, Phillip (Environmental
Protection Agency - Region 9)
16896 2/15/1995
Ltr: Transmittal of responses to 1/5/95 EPA comments
on PVSC 8/29/94 revised sections of planning docs
(oversize maps only) - figures 2-1A & 2-1B, ISGWMN
workplan, groundwater monitoring well network
R09: Chamberlin, David (Camp Dresser
& McKee, Inc)
R09: Ramsey, Phillip (Environmental
Protection Agency - Region 9)
16913 2/27/1995Ltr: Review of memo 2/17/95 fr CDM re cluster well
MW6-7 installation requirement, Puente Valley OU
R09: Ramsey, Phillip (Environmental
Protection Agency - Region 9)R09: Kwan, Joseph (T R W, Inc)
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
R09: Chamberlin, David (Camp Dresser
& McKee, Inc)
R09: Ramsey, Phillip (Environmental
Protection Agency - Region 9)
Page 34 of 88
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First Released 06-17-1997; Last Updated 09-16-2011in CHRONOLOGICAL order
Document ID Document Date Title Author Addressee
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)
R09: (Environmental Protection Agency
- 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
R09: Ramsey, Phillip (Environmental
Protection Agency - Region 9)R09: Kwan, Joseph (T R W, Inc)
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
R09: Wallin, Sharon (Camp Dresser &
McKee, Inc)
R09: Ramsey, Phillip (Environmental
Protection Agency - Region 9)
16917 3/6/1995Ltr: Response to ltr 2/27/95 fr P Ramsey re cluster well
MW6-7 installation requirement, Puente Valley OU
R09: Walter, Robert (Puente Valley
Steering Committee), R09: (T R W, Inc)
R09: Ramsey, Phillip (Environmental
Protection Agency - Region 9)
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
R09: Wallin, Sharon (Camp Dresser &
McKee, Inc)
R09: Ramsey, Phillip (Environmental
Protection Agency - Region 9)
16921 3/10/1995Ltr: Comments on Puente Valley OU RI/FS summary FS
dated 10/29/93, w/attchs
R09: Ramsey, Phillip (Environmental
Protection Agency - Region 9)R09: Kwan, Joseph (T R W, Inc)
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
R09: Chamberlin, David (Camp Dresser
& McKee, Inc)
R09: Ramsey, Phillip (Environmental
Protection Agency - Region 9)
16774 3/24/1995
Memo: Trip rpt #15, EPA oversight of Puente Valley
OU field activities in San Jose Creek on 3/20/95,
w/attch
R09: Lovenburg, John (C H 2 M Hill, Inc)R09: Ramsey, Phillip (Environmental
Protection Agency - Region 9)
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
R09: Ramsey, Phillip (Environmental
Protection Agency - Region 9)R09: Kwan, Joseph (T R W, Inc)
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Document ID Document Date Title Author Addressee
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
R09: Kwan, Joseph (Puente Valley
Steering Committee), R09: (T R W, Inc)
R09: Ramsey, Phillip (Environmental
Protection Agency - Region 9)
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
R09: Ramsey, Phillip (Environmental
Protection Agency - Region 9)R09: Kwan, Joseph (T R W, Inc)
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
R09: Chamberlin, David (Camp Dresser
& McKee, Inc)
R09: Ramsey, Phillip (Environmental
Protection Agency - Region 9)
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
R09: Wallin, Sharon (Camp Dresser &
McKee, Inc)
R09: Ramsey, Phillip (Environmental
Protection Agency - Region 9)
16939 3/30/1995Ltr: Transmittal of proposed aquifer testing program
plan, Puente Valley OU RI/FS, w/attch
R09: Chamberlin, David (Camp Dresser
& McKee, Inc)
R09: Ramsey, Phillip (Environmental
Protection Agency - Region 9)
16940 3/31/1995Ltr: Transmittal of monthly status rpt 3/95, Puente
Valley OU RI/FS, w/attch
R09: Chamberlin, David (Camp Dresser
& McKee, Inc)
R09: Ramsey, Phillip (Environmental
Protection Agency - Region 9)
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
R09: Ramsey, Phillip (Environmental
Protection Agency - Region 9)R09: Kwan, Joseph (T R W, Inc)
32652 4/11/1995Recipients of general notice of liability for San Gabriel
Valley sites, areas 1-4
R09: (Environmental Protection Agency
- 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
R09: Wallin, Sharon (Camp Dresser &
McKee, Inc)
R09: Ramsey, Phillip (Environmental
Protection Agency - Region 9)
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Document ID Document Date Title Author Addressee
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
R09: Ramsey, Phillip (Environmental
Protection Agency - Region 9)R09: Kwan, Joseph (T R W, Inc)
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
R09: Freudenberger, Richard
(Environmental Strategies Corp)
R09: Ramsey, Phillip (Environmental
Protection Agency - Region 9)
19510 4/19/1995Summary rpt, San Jose Creek surface
water/groundwater interactionR09: (Camp Dresser & McKee, Inc)
R09: (Puente Valley Steering
Committee)
19512 4/19/1995Puente Valley OU interim RI/FS workplan, w/o oversize
mapR09: (Camp Dresser & McKee, Inc)
R09: (Puente Valley Steering
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)
R09: (Camp Dresser & McKee, Inc)
19547 4/19/1995
Puente Valley Steering Committee interim
groundwater monitoring well network workplan
(IGMWNWP), w/o oversize maps
R09: (Camp Dresser & McKee, Inc)
19548 4/19/1995
Puente Valley Steering Committee interim
groundwater monitoring well network workplan
(IGMWNWP) (oversize maps only - figures 2-1A & 2-
1B)
R09: (Camp Dresser & McKee, Inc)
19549 4/19/1995Field sampling plan (FSP), Puente Valley OU interim
RI/FS, w/o oversize mapsR09: (Camp Dresser & McKee, Inc)
R09: (Puente Valley Steering
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)
R09: (Camp Dresser & McKee, Inc)
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
R09: Chamberlin, David (Camp Dresser
& McKee, Inc)
R09: Ramsey, Phillip (Environmental
Protection Agency - Region 9)
Page 37 of 88
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Document ID Document Date Title Author Addressee
16983 4/21/1995Ltr: Evaluation of need for additional well at cluster
well MW6-6, Puente Valley OU RI/FS
R09: Wallin, Sharon (Camp Dresser &
McKee, Inc)
R09: Ramsey, Phillip (Environmental
Protection Agency - Region 9)
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
R09: Freudenberger, Richard
(Environmental Strategies Corp)
R09: Mahan, Lisa (Camp Dresser &
McKee, Inc)
16957 4/27/1995
Memo: Trip rpt #1, EPA oversight of Puente Valley OU
field activities at monitoring well cluster MW6-31 on
4/27/95
R09: Lovenburg, John (C H 2 M Hill, Inc)R09: Ramsey, Phillip (Environmental
Protection Agency - Region 9)
18834 4/27/1995Ltr: Transmittal of monthly status rpt 4/95, Puente
Valley OU RI/FS, w/attch
R09: Chamberlin, David (Camp Dresser
& McKee, Inc)
R09: Ramsey, Phillip (Environmental
Protection Agency - Region 9)
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
R09: Lovenburg, John (C H 2 M Hill, Inc)R09: Ramsey, Phillip (Environmental
Protection Agency - Region 9)
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
R09: Ramsey, Phillip (Environmental
Protection Agency - Region 9)R09: Kwan, Joseph (T R W, Inc)
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
R09: Walter, Robert (Puente Valley
Steering Committee), R09: (T R W, Inc)
R09: Ramsey, Phillip (Environmental
Protection Agency - Region 9)
2232610 5/16/1995TL: Quarterly groundwater monitoring rpt, 1st quarter
1995
R09: Mulligan, Steve (I D
Environmental Assoc, Inc)
R09: Nupen, Eric (CA Regional Water
Quality Control Board - Los Angeles
Region)
Page 38 of 88
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Document ID Document Date Title Author Addressee
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
R09: Chamberlin, David (Camp Dresser
& McKee, Inc)
R09: Ramsey, Phillip (Environmental
Protection Agency - Region 9)
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
Protection Agency - Region 9)
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
R09: Eidelberg, Joseph (Environmental
Protection Agency - Region 9)
19106 5/24/1995Ltr: Request for waiver of NPDES permit requirements,
w/Post-it fax note to P Ramsey
R09: Chamberlin, David (Camp Dresser
& McKee, Inc)
R09: Nupen, Eric (CA Regional Water
Quality Control Board - Los Angeles
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
R09: Ramsey, Phillip (Environmental
Protection Agency - Region 9)R09: Kwan, Joseph (T R W, Inc)
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)
R09: Klaiman, Mark (Environmental
Protection Agency - Region 9)R09: Walter, Robert (T R W, Inc)
19913 6/1/1995Ltr: Transmittal of monthly status rpt 5/95, Puente
Valley OU RI/FS, w/attch
R09: Chamberlin, David (Camp Dresser
& McKee, Inc)
R09: Ramsey, Phillip (Environmental
Protection Agency - Region 9)
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
R09: Ramsey, Phillip (Environmental
Protection Agency - Region 9)R09: Kwan, Joseph (T R W, Inc)
Page 39 of 88
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Document ID Document Date Title Author Addressee
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
R09: Freudenberger, Richard
(Environmental Strategies Corp)
R09: Ramsey, Phillip (Environmental
Protection Agency - Region 9)
19658 6/13/1995
Technical Memo #1, Puente Valley OU interim RI/FS, RI
cluster well installation & sampling, appendix B, w/o
oversize parts
R09: (Camp Dresser & McKee, Inc)
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)
R09: (Camp Dresser & McKee, Inc)
19660 6/13/1995Technical memo #1, Puente Valley OU interim RI/FS, RI
cluster well installation & samplingR09: (Camp Dresser & McKee, Inc)
R09: (Puente Valley Steering
Committee)
19661 6/13/1995Technical memo #1, Puente Valley OU interim RI/FS,
FS rptR09: (Camp Dresser & McKee, Inc)
R09: (Puente Valley Steering
Committee)
19717 6/13/1995Ltr: Transmittal of technical memos #1 (RI TM & FS
TM), Puente Valley OU interim RI/FS, w/o attch
R09: Chamberlin, David (Camp Dresser
& McKee, Inc)
R09: Ramsey, Phillip (Environmental
Protection Agency - Region 9)
22005 6/13/1995Technical memo #1, Puente Valley OU interim RI/FS, RI
cluster well installation & sampling, rpt & appendix AR09: (Camp Dresser & McKee, Inc)
R09: (Puente Valley Steering
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
Environmental Protection Agency -
Dept of Toxic Substances Control)
R09: Ramsey, Phillip (Environmental
Protection Agency - Region 9)
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
R09: Chamberlin, David (Camp Dresser
& McKee, Inc)
R09: Klaiman, Mark (Environmental
Protection Agency - Region 9)
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
R09: Ramsey, Phillip (Environmental
Protection Agency - Region 9)R09: Walter, Robert (T R W, Inc)
19924 6/15/1995
Ltr: Formal statement fr Puente Valley Steering
Committee re dispute resolution, monitoring well
MW6-6
R09: Walter, Robert (Puente Valley
Steering Committee), R09: (T R W, Inc)
R09: Takata, Keith (Environmental
Protection Agency - Region 9)
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Document ID Document Date Title Author Addressee
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: Klaiman, Mark (Environmental
Protection Agency - Region 9)
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
R09: Ramsey, Phillip (Environmental
Protection Agency - Region 9)
R09: Chamberlin, David (Camp
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
R09: Chamberlin, David (Camp Dresser
& McKee, Inc)
R09: Ramsey, Phillip (Environmental
Protection Agency - Region 9)
19341 6/30/1995 Ltr: Transmits 6/95 monthly status rpt w/enclR09: Chamberlin, David (Camp Dresser
& McKee, Inc)
R09: Ramsey, Phillip (Environmental
Protection Agency - Region 9)
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
R09: Zelikson, Jeff (Environmental
Protection Agency - Region 9)R09: Walter, Robert (T R W, Inc)
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
R09: Ramsey, Phillip (Environmental
Protection Agency - Region 9)R09: Kwan, Joseph (T R W, Inc)
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
R09: Walter, Robert (Puente Valley
Steering Committee), R09: (T R W, Inc)
R09: Ramsey, Phillip (Environmental
Protection Agency - Region 9)
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
R09: Ramsey, Phillip (Environmental
Protection Agency - Region 9)R09: Kwan, Joseph (T R W, Inc)
Page 41 of 88
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Document ID Document Date Title Author Addressee
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
R09: Kwan, Joseph (Puente Valley
Steering Committee), R09: (T R W, Inc)
R09: Ramsey, Phillip (Environmental
Protection Agency - Region 9)
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)
R09: Walter, Robert (Puente Valley
Steering Committee), R09: (T R W, Inc)
R09: Lau, Nathan (Environmental
Protection Agency - Region 9)
2234077 8/1/1995
Quarterly groundwater monitoring rpt 8/95 - former
Benchmark Technology facility, 200 S Turnbull Canyon
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
R09: Ramsey, Phillip (Environmental
Protection Agency - Region 9)R09: Kwan, Joseph (T R W, Inc)
19723 8/16/1995
Ltr: Transmittal of Puente Valley Steering Committee's
proposed schedule for remaining RI/FS activities,
w/attch
R09: Kwan, Joseph (Puente Valley
Steering Committee), R09: (T R W, Inc)
R09: Lau, Nathan (Environmental
Protection Agency - Region 9)
25149 8/18/1995
Memo: Trip rpt #19, EPA oversight of Puente Valley
OU field activities at monitoring well MW662 on
8/23/95
R09: Lovenburg, John (C H 2 M Hill, Inc)R09: Ramsey, Phillip (Environmental
Protection Agency - Region 9)
32619 8/18/1995
Memo: Trip rpt #18, EPA oversight of Puente Valley
OU field activities at monitoring wells MW665 &
MW654 on 8/17/95
R09: Lovenburg, John (C H 2 M Hill, Inc)R09: Ramsey, Phillip (Environmental
Protection Agency - Region 9)
22913 8/24/1995
Memo: Trip rpt #3, EPA oversight of Puente Valley OU
field activities at monitoring well cluster MW63 on
8/23/95
R09: Lovenburg, John (C H 2 M Hill, Inc)R09: Ramsey, Phillip (Environmental
Protection Agency - Region 9)
2234078 9/1/1995
Quarterly groundwater monitoring rpt 9/95 - former
Benchmark Technology facility, 200 S Turnbull Canyon
Rd, City of Industry, w/marginalia re 7/95
R09: (T R W Environmental & Safety
Laboratory)R09: (T R W, Inc)
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Document ID Document Date Title Author Addressee
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
R09: (Camp Dresser & McKee, Inc)R09: (Puente Valley Steering
Committee)
21307 9/19/1995
Technical memo #2, Puente Valley OU interim RI/FS, RI
aquifer testing program, water quality sampling & San
Jose Creek study rpt, w/appendices A & B (oversize
maps only - plates 1-3)
R09: (Camp Dresser & McKee, Inc)R09: (Puente Valley Steering
Committee)
21308 9/19/1995
Technical memo #2, Puente Valley OU interim RI/FS, RI
aquifer testing program, water quality sampling & San
Jose Creek study, appendix C, analytical rpts, COCs &
data validation, w/ltr 9/12/95 to S Wallin fr D Burley
(attch only)
R09: (Camp Dresser & McKee, Inc)R09: (Puente Valley Steering
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
R09: Wallin, Sharon (Camp Dresser &
McKee, Inc)
R09: Ramsey, Phillip (Environmental
Protection Agency - Region 9)
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
R09: Ramsey, Phillip (Environmental
Protection Agency - Region 9)R09: Kwan, Joseph (T R W, Inc)
21106 9/28/1995Ltr: Transmittal of monthly status rpt for 9/95, Puente
Valley OU RI/FS, w/attch
R09: Chamberlin, David (Camp Dresser
& McKee, Inc)
R09: Ramsey, Phillip (Environmental
Protection Agency - Region 9)
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
R09: Eidelberg, Joseph (Environmental
Protection Agency - Region 9)
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
R09: Ramsey, Phillip (Environmental
Protection Agency - Region 9)
R09: Freudenberger, Richard
(Environmental Strategies Corp)
Page 43 of 88
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Document ID Document Date Title Author Addressee
2232607 10/2/1995TL: Quarterly groundwater monitoring rpts for 8/95 &
9/95R09: (T R W, Inc)
R09: Nupen, Eric (CA Regional Water
Quality Control Board - Los Angeles
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
R09: Freudenberger, Richard
(Environmental Strategies Corp)
R09: Ramsey, Phillip (Environmental
Protection Agency - Region 9)
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
R09: Chamberlin, David (Camp Dresser
& McKee, Inc)
R09: Ramsey, Phillip (Environmental
Protection Agency - Region 9)
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
R09: Ramsey, Phillip (Environmental
Protection Agency - Region 9)
R09: Freudenberger, Richard
(Environmental Strategies Corp)
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
R09: (Environmental Strategies Corp) R09: (Diversey Corp)
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)
R09: (Puente Valley Steering
Committee)
22436 10/31/1995Ltr: Transmits 10/95 monthly status rpt, Puente Valley
OU RI/FS, w/attch
R09: Chamberlin, David (Camp Dresser
& McKee, Inc)
R09: Ramsey, Phillip (Environmental
Protection Agency - Region 9)
21729 11/8/1995Ltr: Comments on Puente Valley OU, RI technical
memo #2 dated 9/19/95, w/encls
R09: Ramsey, Phillip (Environmental
Protection Agency - Region 9)R09: Kwan, Joseph (T R W, Inc)
21725 11/9/1995Ltr: Revised RI/FS schedule for Puente Valley OU,
w/attch & marginalia re modelling problems
R09: Kwan, Joseph (Puente Valley
Steering Committee), R09: (T R W, Inc)
R09: Ramsey, Phillip (Environmental
Protection Agency - Region 9)
22914 11/9/1995
Memo: Trip rpt #4, EPA oversight of Puente Valley OU
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
Protection Agency - Region 9)
Page 44 of 88
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Document ID Document Date Title Author Addressee
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
R09: Freudenberger, Richard
(Environmental Strategies Corp)
R09: Ramsey, Phillip (Environmental
Protection Agency - Region 9)
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
R09: (Environmental Strategies Corp) R09: (Diversey Corp)
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
R09: Nupen, Eric (CA Regional Water
Quality Control Board - Los Angeles
Region)
R09: Freudenberger, Richard
(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: Ramsey, Phillip (Environmental
Protection Agency - Region 9)
R09: Wallin, Sharon (Camp Dresser
& McKee, Inc)
21706 11/21/1995Ltr: Results of additional pumping test analysis, UAO
#93-23, w/attch
R09: Freudenberger, Richard
(Environmental Strategies Corp)
R09: Ramsey, Phillip (Environmental
Protection Agency - Region 9)
21727 11/22/1995
Ltr: Response to 11/9/95 request fr Puente Valley
Steering Committee re interim RI/FS schedule
modification
R09: Ramsey, Phillip (Environmental
Protection Agency - Region 9)R09: Kwan, Joseph (T R W, Inc)
21728 11/24/1995
Ltr: Comments on Puente Valley OU FS technical
memo #2 dated 10/30/95, w/attch A, specific
comments
R09: Ramsey, Phillip (Environmental
Protection Agency - Region 9)R09: Kwan, Joseph (T R W, Inc)
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
R09: Ramsey, Phillip (Environmental
Protection Agency - Region 9)
R09: Freudenberger, Richard
(Environmental Strategies Corp)
23415 11/30/1995Ltr: Transmittal of monthly status rpt for 11/95,
Puente Valley OU RI/FS, w/attch
R09: Chamberlin, David (Camp Dresser
& McKee, Inc)
R09: Ramsey, Phillip (Environmental
Protection Agency - Region 9)
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
Protection Agency - Region 9)
Page 45 of 88
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First Released 06-17-1997; Last Updated 09-16-2011in CHRONOLOGICAL order
Document ID Document Date Title Author Addressee
23417 12/6/1995Ltr: Proposed revised submittal date for Puente Valley
OU draft FS rpt
R09: Walter, Robert (Puente Valley
Steering Committee), R09: (T R W, Inc)
R09: Ramsey, Phillip (Environmental
Protection Agency - Region 9)
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
R09: Freudenberger, Richard
(Environmental Strategies Corp)
R09: Ramsey, Phillip (Environmental
Protection Agency - Region 9)
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
R09: Burnett, Carl (City of Industry -
Urban-Development Agency)
R09: Takata, Keith (Environmental
Protection Agency - Region 9)
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)
R09: Burnett, Carl (City of Industry -
Urban-Development Agency)
R09: Takata, Keith (Environmental
Protection Agency - Region 9)
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
R09: Ramsey, Phillip (Environmental
Protection Agency - Region 9)R09: Walter, Robert (T R W, Inc)
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)
R09: (Puente Valley Steering
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 )
R09: (Camp Dresser & McKee, Inc)R09: (Puente Valley Steering
Committee)
25437 12/12/1995Draft RI rpt, Puente Valley OU interim RI/FS,
appendices (attchs only)R09: (Camp Dresser & McKee, Inc)
R09: (Puente Valley Steering
Committee)
24901 12/28/1995Ltr: Transmittal of monthly status rpt for 12/95,
Puente Valley OU RI/FS, w/attch
R09: Chamberlin, David (Camp Dresser
& McKee, Inc)
R09: Ramsey, Phillip (Environmental
Protection Agency - Region 9)
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
Protection Agency - Region 9)
Page 46 of 88
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Document ID Document Date Title Author Addressee
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
Protection Agency - Region 9)
R09: Ramsey, Phillip (Environmental
Protection Agency - Region 9)
24899 1/26/1996
Ltr: Transmittal of proposed agenda for meeting on
1/30/96 between Puente Valley Steering Committee &
EPA, w/attch
R09: Chamberlin, David (Camp Dresser
& McKee, Inc)
R09: Ramsey, Phillip (Environmental
Protection Agency - Region 9)
24902 1/29/1996Ltr: Transmittal of monthly status rpt for 1/96, Puente
Valley OU RI/FS, w/attch
R09: Chamberlin, David (Camp Dresser
& McKee, Inc)
R09: Ramsey, Phillip (Environmental
Protection Agency - Region 9)
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
R09: Freudenberger, Richard
(Environmental Strategies Corp)
R09: Ramsey, Phillip (Environmental
Protection Agency - Region 9)
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
R09: Kwan, Joseph (Puente Valley
Steering Committee), R09: (T R W, Inc)
R09: Ramsey, Phillip (Environmental
Protection Agency - Region 9)
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
R09: Ramsey, Phillip (Environmental
Protection Agency - Region 9)R09: Kwan, Joseph (T R W, Inc)
2232605 2/9/1996 TL: Quarterly groundwater monitoring rpt for 10/95 R09: (T R W, Inc)
R09: Nupen, Eric (CA Regional Water
Quality Control Board - Los Angeles
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
R09: Eidelberg, Joseph (Environmental
Protection Agency - Region 9)
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
R09: Ramsey, Phillip (Environmental
Protection Agency - Region 9)R09: Kwan, Joseph (T R W, Inc)
Page 47 of 88
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First Released 06-17-1997; Last Updated 09-16-2011in CHRONOLOGICAL order
Document ID Document Date Title Author Addressee
24946 2/29/1996Ltr: Transmits 2/96 monthly status rpt, Puente Valley
OU RI/FS, w/attch
R09: Chamberlin, David (Camp Dresser
& McKee, Inc)
R09: Ramsey, Phillip (Environmental
Protection Agency - Region 9)
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
R09: Lau, Nathan (Environmental
Protection Agency - Region 9)R09: Walter, Robert (T R W, Inc)
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)
R09: Ramsey, Phillip (Environmental
Protection Agency - Region 9)
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
Protection Agency - Region 9)
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
R09: (Environmental Strategies Corp) R09: (Diversey Corp)
24186 3/19/1996Technical memo #3, Puente Valley OU interim RI/FS, RI
rpt & appendix A, w/TL 3/19/96 fr CDM to P RamseyR09: (Camp Dresser & McKee, Inc)
R09: (Puente Valley Steering
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
R09: Ramsey, Phillip (Environmental
Protection Agency - Region 9)R09: Kwan, Joseph (T R W, Inc)
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)
R09: (Environmental Protection
Agency - Region 9)
24218 3/28/1996Draft FS, Puente Valley OU interim RI/FS, appendices D-
I (attchs only)R09: (Camp Dresser & McKee, Inc)
R09: (Environmental Protection
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
R09: Ramsey, Phillip (Environmental
Protection Agency - Region 9)R09: Kwan, Joseph (T R W, Inc)
Page 48 of 88
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First Released 06-17-1997; Last Updated 09-16-2011in CHRONOLOGICAL order
Document ID Document Date Title Author Addressee
24937 3/29/1996Ltr: Transmits 3/96 monthly status rpt, Puente Valley
OU RI/FS, w/attch
R09: Chamberlin, David (Camp Dresser
& McKee, Inc)
R09: Ramsey, Phillip (Environmental
Protection Agency - Region 9)
2232604 4/5/1996 TL: Quarterly groundwater monitoring rpt for 1/96 R09: (T R W, Inc)
R09: Nupen, Eric (CA Regional Water
Quality Control Board - Los Angeles
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
R09: Klaiman, Mark (Environmental
Protection Agency - Region 9)R09: Walter, Robert (T R W, Inc)
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
R09: Lau, Nathan (Environmental
Protection Agency - Region 9)
R09: Walter, Robert (Puente Valley
Steering Committee), R09: (T R W,
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
R09: Ramsey, Phillip (Environmental
Protection Agency - Region 9)
R09: Kwan, Joseph (Puente Valley
Steering Committee), R09: (T R W,
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))
R09: Klaiman, Mark (Environmental
Protection Agency - Region 9)
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
R09: Lau, Nathan (Environmental
Protection Agency - Region 9)
R09: Walter, Robert (Puente Valley
Steering Committee), R09: (T R W,
Inc)
2096339 4/25/1996Photos (19): OSCO neighborhood at Basetdale Ave &
Alanwood Rd, w/negatives (4 x 6 in, color)
R09: Collins, Patti (Environmental
Protection Agency - Region 9)
Page 49 of 88
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First Released 06-17-1997; Last Updated 09-16-2011in CHRONOLOGICAL order
Document ID Document Date Title Author Addressee
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
R09: Chamberlin, David (Camp Dresser
& McKee, Inc)
R09: Ramsey, Phillip (Environmental
Protection Agency - Region 9)
25395 5/2/1996Ltr: Request for submittal of FS model calibration
documentation, Puente Valley OU interim RI/FS
R09: Ramsey, Phillip (Environmental
Protection Agency - Region 9)
R09: Kwan, Joseph (Puente Valley
Steering Committee), R09: (T R W,
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
R09: Lau, Nathan (Environmental
Protection Agency - Region 9)
R09: Walter, Robert (Puente Valley
Steering Committee), R09: (T R W,
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
R09: Walter, Robert (Puente Valley
Steering Committee), R09: (T R W, Inc)
R09: Lau, Nathan (Environmental
Protection Agency - Region 9)
25442 5/13/1996Ltr: Additional comments on Puente Valley draft FS
rpt, w/attch
R09: Ramsey, Phillip (Environmental
Protection Agency - Region 9)
R09: Kwan, Joseph (Puente Valley
Steering Committee), R09: (T R W,
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
R09: Kwan, Joseph (Puente Valley
Steering Committee), R09: (T R W, Inc)
R09: Ramsey, Phillip (Environmental
Protection Agency - Region 9)
32605 5/28/1996
Ltr: Confirmation of understanding of issues re model
calibration assessment comments & final FS revised
due date, Puente Valley OU
R09: Kwan, Joseph (Puente Valley
Steering Committee), R09: (T R W, Inc)
R09: Ramsey, Phillip (Environmental
Protection Agency - Region 9)
25394 5/30/1996Ltr: Transmittal of monthly status rpt 5/96, Puente
Valley OU RI/FS, w/attch
R09: Chamberlin, David (Camp Dresser
& McKee, Inc)
R09: Ramsey, Phillip (Environmental
Protection Agency - Region 9)
2096332 6/1/1996 OSCO sampling media/technology alternativesR09: (Environmental Protection Agency
- Region 9)
Page 50 of 88
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Document ID Document Date Title Author Addressee
2096333 6/1/1996OSCO potential sampling locations, w/aerial photo &
overlay #1
R09: (Environmental Protection Agency
- 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
R09: Ramsey, Phillip (Environmental
Protection Agency - Region 9)
R09: Kwan, Joseph (Puente Valley
Steering Committee), R09: (T R W,
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
R09: Ramsey, Phillip (Environmental
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
R09: Freudenberger, Richard
(Environmental Strategies Corp)
R09: Ramsey, Phillip (Environmental
Protection Agency - Region 9)
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
R09: Ramsey, Phillip (Environmental
Protection Agency - Region 9)
R09: Kwan, Joseph (Puente Valley
Steering Committee), R09: (T R W,
Inc)
2232603 6/28/1996 TL: Quarterly groundwater monitoring rpt for 4/96 R09: (T R W, Inc)
R09: Lara, Julio (CA Regional Water
Quality Control Board - Los Angeles
Region)
25699 7/1/1996Ltr: Transmittal of monthly status rpt 6/96, Puente
Valley OU RI/FS, w/attch
R09: Chamberlin, David (Camp Dresser
& McKee, Inc)
R09: Ramsey, Phillip (Environmental
Protection Agency - Region 9)
26905 7/1/1996Comment/response summary, final FS, Puente Valley
OU interim RI/FSR09: (Camp Dresser & McKee, Inc)
R09: (Puente Valley Steering
Committee)
26906 7/1/1996Redline/strikeout of final FS text, Puente Valley OU
interim RI/FSR09: (Camp Dresser & McKee, Inc)
R09: (Puente Valley Steering
Committee)
32308 7/1/1996[Draft] final FS, Puente Valley OU interim RI/FS - rpt &
appendices A-CR09: (Camp Dresser & McKee, Inc)
R09: (Puente Valley Steering
Committee)
32309 7/1/1996[Draft] final FS, Puente Valley OU interim RI/FS -
appendices D-J (attchs only)R09: (Camp Dresser & McKee, Inc)
R09: (Puente Valley Steering
Committee)
Page 51 of 88
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Document ID Document Date Title Author Addressee
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)
R09: (C H 2 M Hill, Inc)
2190237 7/1/1996[Draft] final FS, Puente Valley OU interim RI/FS - rpt &
appendices A-CR09: (Camp Dresser & McKee, Inc)
R09: (Puente Valley Steering
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)
R09: Ramsey, Phillip (Environmental
Protection Agency - Region 9)
2096342 7/19/1996Field task-specific workplan, OSCO Puente Valley site
soil gas investigation, Whittier Narrows OUR09: (C H 2 M Hill, Inc)
R09: (Environmental Protection
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)
R09: (C H 2 M Hill, Inc)
2096327 7/26/1996
OSCO door-to-door (addresses & homeowners on
Basetdale Ave, Alanwood Rd, Santa Mariana Ave &
Hilbert Ave), w/marginalia
R09: (C H 2 M Hill, Inc)
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
Protection Agency - Region 9)
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)
R09: (C H 2 M Hill, Inc)
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
Protection Agency - Region 9)
Page 52 of 88
San Gabriel Valley (Area 4) Superfund Site
La Puente, California
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
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
Protection Agency - Region 9)
R09: Frazer, Doug (Environmental
Protection Agency - Region 9)
2232602 10/2/1996 TL: Quarterly groundwater monitoring rpt for 7/96 R09: (T R W, Inc)
R09: Lara, Julio (CA Regional Water
Quality Control Board - Los Angeles
Region)
32603 11/1/1996Ltr: Transmittal of sign-in sheet & overheads fr
10/24/96 meeting, Puente Valley OU, w/attchs
R09: Chamberlin, David (Camp Dresser
& McKee, Inc)
R09: Whitlock, Janet (Environmental
Protection Agency - Region 9)
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
R09: Ramsey, Phillip (Environmental
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)
R09: Lau, Nathan (Environmental
Protection Agency - Region 9)
32653 12/11/1996Overheads fr presentation on 12/11/96 to Puente
Valley Steering Committee (PVSC) on overview of FS
R09: (Environmental Protection Agency
- Region 9)
R09: (Puente Valley Steering
Committee)
2096345 1/1/1997Subtasks A, B & C, LOE estimates, w/marginalia re
email to Doug, OSCO workplan estimate & SOW insert
R09: (Environmental Protection Agency
- 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)
R09: (C H 2 M Hill, Inc)
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)
R09: (C H 2 M Hill, Inc)
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)
R09: (T R W Environmental & Safety
Laboratory)R09: (T R W, Inc)
Page 53 of 88
San Gabriel Valley (Area 4) Superfund Site
La Puente, California
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
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
R09: Whitlock, Janet (Environmental
Protection Agency - Region 9)R09: Kwan, Joseph (T R W, Inc)
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
R09: Whitlock, Janet (Environmental
Protection Agency - Region 9)
R09: O'laughlin, Thomas (A S L
Consulting Engineers)
32624 1/30/1997Agenda, sign-in sheet & draft overheads fr 1/30/97
Puente Valley OUFS meeting
R09: (Environmental Protection Agency
- Region 9)
2232040 1/30/1997TL: Quarterly groundwater monitoring rpt for 10/96
[NPDES #CAG994150]R09: (T R W, Inc)
R09: Lara, Julio (CA Regional Water
Quality Control Board - Los Angeles
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
Protection Agency - Region 9)
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)
R09: Lara, Julio (CA Regional Water
Quality Control Board - Los Angeles
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
Protection Agency - Region 9)
R09: Kwan, Joseph (Puente Valley
Steering Committee), R09: (T R W,
Inc)
32593 3/13/1997
Ltr: Comments on construction plans & contract
specifications for Rowland Water District well #1 dated
2/97
R09: Chow, Eugenia (Environmental
Protection Agency - Region 9)
R09: O'laughlin, Thomas (A S L
Consulting Engineers)
Page 54 of 88
San Gabriel Valley (Area 4) Superfund Site
La Puente, California
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
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)
R09: (Camp Dresser & McKee, Inc)
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)
R09: (Camp Dresser & McKee, Inc)
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))
R09: Lara, Julio (CA Regional Water
Quality Control Board - Los Angeles
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
R09: O'laughlin, Thomas (A S L
Consulting Engineers)
R09: Chow, Eugenia (Environmental
Protection Agency - Region 9)
32623 3/25/1997Agenda, sign-in sheet & overheads fr 3/25/97 Puente
Valley OUFS meeting
R09: (Environmental Protection Agency
- 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
R09: Kwan, Joseph (Puente Valley
Steering Committee), R09: (T R W, Inc)
R09: Chow, Eugenia (Environmental
Protection Agency - Region 9)
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
Protection Agency - Region 9)
R09: Walter, Robert (Puente Valley
Steering Committee), R09: (T R W,
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
R09: Chow, Eugenia (Environmental
Protection Agency - Region 9)R09: Kwan, Joseph (T R W, Inc)
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
R09: (Puente Valley Steering
Committee), R09: (Environmental
Protection Agency - Region 9)
Page 55 of 88
San Gabriel Valley (Area 4) Superfund Site
La Puente, California
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
32611 4/23/1997Ltr: Comments on 3/11/97 draft RI rpt for Puente
Valley OU
R09: Chow, Eugenia (Environmental
Protection Agency - Region 9)
R09: Kwan, Joseph (Puente Valley
Steering Committee), R09: (T R W,
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
R09: Walter, Robert (Puente Valley
Steering Committee), R09: (T R W, Inc)
R09: Moffatt, Brett (Environmental
Protection Agency - Region 9)
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)
R09: (Camp Dresser & McKee, Inc)
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)
R09: (Camp Dresser & McKee, Inc)
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
R09: Chow, Eugenia (Environmental
Protection Agency - Region 9)
R09: Kwan, Joseph (Puente Valley
Steering Committee), R09: (T R W,
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)
R09: Lara, Julio (CA Regional Water
Quality Control Board - Los Angeles
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: Chow, Eugenia (Environmental
Protection Agency - Region 9)
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
R09: Chow, Eugenia (Environmental
Protection Agency - Region 9)
R09: Kwan, Joseph (Puente Valley
Steering Committee), R09: (T R W,
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
R09: Poli, Anthony (Rowland Water
District)
R09: Chow, Eugenia (Environmental
Protection Agency - Region 9)
Page 56 of 88
San Gabriel Valley (Area 4) Superfund Site
La Puente, California
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
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)
R09: (Puente Valley Steering
Committee)
30643 5/30/1997Final RI rpt, appendices, Puente Valley OU interim
RI/FS, w/o oversize mapsR09: (Camp Dresser & McKee, Inc)
R09: (Puente Valley Steering
Committee)
30644 5/30/1997Final RI rpt, appendix E, attch 2, v1, Puente Valley OU
interim RI/FSR09: (Camp Dresser & McKee, Inc)
R09: (Puente Valley Steering
Committee)
30645 5/30/1997Final RI rpt, appendix E, attch 2, v2, Puente Valley OU
interim RI/FSR09: (Camp Dresser & McKee, Inc)
R09: (Puente Valley Steering
Committee)
30692 5/30/1997Final RI rpt, Puente Valley OU interim RI/FS (oversize
maps only - plates 1-4)R09: (Camp Dresser & McKee, Inc)
R09: (Puente Valley Steering
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)
R09: (Puente Valley Steering
Committee)
32598 5/30/1997 TL: Final RI rpt, Puente Valley OU interim RI/FSR09: Chamberlin, David (Camp Dresser
& McKee, Inc)
R09: Chow, Eugenia (Environmental
Protection Agency - Region 9)
32589 6/13/1997Ltr: Response to ltr 5/29/97 fr A Poli & clarification of
issues re Rowland Water District well #1
R09: Chow, Eugenia (Environmental
Protection Agency - Region 9)
R09: Poli, Anthony (Rowland Water
District)
32602 6/25/1997Sign-in sheet & overheads used for EPA presentation
at 6/25/97 meeting with Puente Valley OU PRPs
R09: (Environmental Protection Agency
- 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
R09: Walter, Robert (Puente Valley
Steering Committee), R09: (T R W, Inc)
R09: Moffatt, Brett (Environmental
Protection Agency - Region 9)
32625 7/8/1997Ltr: Comments on draft Puente Valley RI/FS dated
4/25/97, w/attch
R09: Spiszman, Jacalyn (CA
Environmental Protection Agency -
Dept of Toxic Substances Control)
R09: Chow, Eugenia (Environmental
Protection Agency - Region 9)
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
R09: Poli, Anthony (Rowland Water
District)
R09: Chow, Eugenia (Environmental
Protection Agency - Region 9)
Page 57 of 88
San Gabriel Valley (Area 4) Superfund Site
La Puente, California
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
2232036 7/16/1997
Ltr: Requests that quarterly groundwater monitoring
be modified to semiannual groundwater monitoring,
ref former Benchmark site, City of Industry
R09: Gwinn, Jeffrey (Orion
Environmental, Inc), R09: Niemeyer,
Linda (Orion Environmental, Inc)
R09: Lara, Julio (CA Regional Water
Quality Control Board - Los Angeles
Region)
32622 7/18/1997
Agenda & Camp Dresser & McKee's overheads fr
7/18/97 EPA/Puente Valley Steering Committee
meeting
R09: (Environmental Protection Agency
- Region 9)
32621 7/30/1997Agenda & sign-in sheet, 7/30/97 EPA/Puente Valley
Steering Committee meeting
R09: (Environmental Protection Agency
- 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
Protection Agency - Region 9)
32597 8/22/1997Ltr: Notification that Regional Board has reviewed final
draft of Puente Valley OUFS & has no comments
R09: Bishop, Jonathan (CA Regional
Water Quality Control Board - Los
Angeles Region)
R09: Chow, Eugenia (Environmental
Protection Agency - Region 9)
32612 8/27/1997Overheads fr 8/27/97 EPA presentation to Puente
Valley Steering Committee
R09: (Environmental Protection Agency
- Region 9)
R09: (Puente Valley Steering
Committee)
32620 8/27/1997
Overheads fr 8/27/97 Puente Valley Steering
Committee presentation, proposed early data
collection program
R09: (Puente Valley Steering
Committee)
2190252 9/5/1997
SAP, shallow plume investigation/confirmatory
sampling program, mouth of Puente Valley, w/TL to E
Chow (preliminary draft)
R09: (Camp Dresser & McKee, Inc)R09: (Puente Valley Steering
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
R09: Chow, Eugenia (Environmental
Protection Agency - Region 9)
R09: Walter, Robert (Puente Valley
Steering Committee), R09: (T R W,
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
R09: Chamberlin, David (Camp Dresser
& McKee, Inc)
R09: Chow, Eugenia (Environmental
Protection Agency - Region 9)
Page 58 of 88
San Gabriel Valley (Area 4) Superfund Site
La Puente, California
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
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
R09: Chamberlin, David (Camp Dresser
& McKee, Inc)
R09: Chow, Eugenia (Environmental
Protection Agency - Region 9)
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)
R09: (Camp Dresser & McKee, Inc)
32613 10/3/1997Agenda & sign-in sheet, 10/3/97 Puente Valley
Steering Committee/EPA meeting
R09: (Environmental Protection Agency
- 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
R09: Chamberlin, David (Camp Dresser
& McKee, Inc)
R09: Chow, Eugenia (Environmental
Protection Agency - Region 9)
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
R09: Walter, Robert (Puente Valley
Steering Committee), R09: (T R W, Inc)
R09: Chow, Eugenia (Environmental
Protection Agency - Region 9)
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
R09: Burnett, Carl (City of Industry -
Urban-Development Agency)
R09: Chow, Eugenia (Environmental
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))
R09: Chow, Eugenia (Environmental
Protection Agency - Region 9)
32667 10/30/1997 Ltr: Comments on draft FS, Puente Valley OUR09: Williams, Carol (Main San Gabriel
Basin Watermaster)
R09: Chow, Eugenia (Environmental
Protection Agency - Region 9)
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)
R09: Chow, Eugenia (Environmental
Protection Agency - Region 9)
Page 59 of 88
San Gabriel Valley (Area 4) Superfund Site
La Puente, California
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
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
R09: Gwinn, Jeffrey (Orion
Environmental, Inc), R09: Webster,
Malcolm (Orion Environmental, Inc)
R09: Lara, Julio (CA Regional Water
Quality Control Board - Los Angeles
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)
R09: Wallin, Sharon (Camp Dresser &
McKee, Inc)
R09: Chow, Eugenia (Environmental
Protection Agency - Region 9)
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
R09: Chow, Eugenia (Environmental
Protection Agency - Region 9)
2190247 11/25/1997Memo: Applicability of NoVOCs technology in Puente
Valley OU, w/fax TLR09: Harris, Jonathan (C H 2 M Hill, Inc)
R09: Chow, Eugenia (Environmental
Protection Agency - Region 9)
2232033 11/26/1997 TL: Quarterly groundwater monitoring rpt for 5/97 R09: Kwan, Joseph (T R W, Inc)
R09: Lara, Julio (CA Regional Water
Quality Control Board - Los Angeles
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
R09: Gwinn, Jeffrey (Orion
Environmental, Inc), R09: Webster,
Malcolm (Orion Environmental, Inc)
R09: Lara, Julio (CA Regional Water
Quality Control Board - Los Angeles
Region)
32669 12/10/1997Guidance documents for Puente Valley OU
administrative record
R09: (Environmental Protection Agency
- 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
Quality Control Board - Los Angeles
Region)
R09: Kwan, Joseph (T R W, Inc)
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)
R09: Takata, Keith (Environmental
Protection Agency - Region 9)
Page 60 of 88
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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
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)
R09: Wallin, Sharon (Camp Dresser &
McKee, Inc)
R09: Chow, Eugenia (Environmental
Protection Agency - Region 9)
33167 12/30/1997Memo: Response to 12/18/97 National Remedy
Review Board recommendations on Puente Valley OU
R09: Takata, Keith (Environmental
Protection Agency - Region 9)
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
R09: (Environmental Protection Agency
- Region 9)
33768 2/1/1998
Fact sheet: Proposed plan, Puente Valley OU (EPA
extends public comment period closing date to
3/16/98)
R09: (Environmental Protection Agency
- 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)
R09: Lara, Julio (CA Regional Water
Quality Control Board - Los Angeles
Region)
R09: Dickerson, Dennis (CA Regional
Water Quality Control Board - Los
Angeles Region), R09: Leon, Jorge
(CA Regional Water Quality Control
Board - Los Angeles Region)
50620 5/4/1998Mouth of valley investigation, Puente Valley OU, w/o
attchR09: (Camp Dresser & McKee, Inc)
R09: (Puente Valley Steering
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)
R09: (Camp Dresser & McKee, Inc)R09: (Puente Valley Steering
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
R09: Kwan, Joseph (T R W, Inc)
R09: Lara, Julio (CA Regional Water
Quality Control Board - Los Angeles
Region)
2232024 6/23/1998
Meeting Agenda: Status rpt submittal & soil closure
meeting on 6/23/98, ref Benchmark site, City of
Industry
R09: (CA Regional Water Quality
Control Board - Los Angeles Region)
Page 61 of 88
San Gabriel Valley (Area 4) Superfund Site
La Puente, California
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
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
R09: Lara, Julio (CA Regional Water
Quality Control Board - Los Angeles
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
Protection Agency - Region 9)
2232023 7/24/1998
Ltr: Transmits & requests for approval of closure rpt
for vadose zone soil at Benchmark site, w/marginalia,
w/o attch
R09: Kwan, Joseph (T R W, Inc)
R09: Lara, Julio (CA Regional Water
Quality Control Board - Los Angeles
Region)
2234072 8/1/1998
Groundwater monitoring rpt, 11/97 annual event -
former Benchmark Technology facility, 200 S Turnbull
Canyon Rd, City of Industry
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: Kwan, Joseph (T R W, Inc)
R09: Heath, Arthur (CA Regional
Water Quality Control Board - Los
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)
R09: (Environmental Protection Agency
- 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
Water Quality Control Board - Los
Angeles Region)
39880 9/14/1998
Resolution #98-016 - consideration of approval of
resolution supporting EPA's proposed plan for site
cleanup
R09: Dickerson, Dennis (CA Regional
Water Quality Control Board - Los
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
Quality Control Board - Los Angeles
Region)
R09: Kwan, Joseph (T R W, Inc)
2162742 12/1/1998Annual rpt, 1998, Well Investigation Program, w/TL
9/13/99 to E Adams
R09: (CA Regional Water Quality
Control Board - Los Angeles Region)
R09: (Environmental Protection
Agency - Region 9)
Page 62 of 88
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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
2232014 4/19/1999 TL: Groundwater monitoring rpt for 5/98 R09: Kwan, Joseph (T R W, Inc)
R09: Solomon, Ejigu (CA Regional
Water Quality Control Board - Los
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
R09: Chamberlin, David (Camp Dresser
& McKee, Inc)
R09: Adams, Elizabeth
(Environmental Protection Agency -
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)
R09: Chamberlin, David (Camp Dresser
& McKee, Inc)
R09: Adams, Elizabeth
(Environmental Protection Agency -
Region 9), R09: Mcdaniel, Penelope
(Environmental Protection Agency -
Region 9)
2162810 5/20/1999Table re mouth of Puente Valley investigation,
chlorinated VOCs analytical summary, PVSC 1997-98R09: (Camp Dresser & McKee, Inc)
R09: (Puente Valley Steering
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)
R09: Solomon, Ejigu (CA Regional
Water Quality Control Board - Los
Angeles Region)
2069141 8/12/1999Wells B7C & B11B investigation, rpt of findings, w/o
oversize drawingsR09: (Camp Dresser & McKee, Inc)
R09: (Puente Valley Steering
Committee)
2192381 8/12/1999Wells B7C & B11B investigation, rpt of findings,
w/oversize drawings, marginalia & TL to P McDanielR09: (Camp Dresser & McKee, Inc)
R09: (Puente Valley Steering
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
(Environmental Protection Agency -
Region 9)
2162815 9/2/1999
Technical Memo: Review of Puente Valley OU wells
B7C & B11B investigation, rpt of findings dated
8/12/99, w/table, plot & TL
R09: Mark, Dave (C H 2 M Hill, Inc),
R09: Harris, Jonathan (C H 2 M Hill, Inc)
R09: Mcdaniel, Penelope
(Environmental Protection Agency -
Region 9)
Page 63 of 88
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La Puente, California
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
2162816 9/2/1999
Technical Memo: Review of Puente Valley OU wells
B7C & B11B investigation, rpt of findings dated
8/12/99, w/table, plot & marginalia
R09: Mark, Dave (C H 2 M Hill, Inc),
R09: Harris, Jonathan (C H 2 M Hill, Inc)
R09: Mcdaniel, Penelope
(Environmental Protection Agency -
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
R09: Mcdaniel, Penelope
(Environmental Protection Agency -
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)
R09: Mcdaniel, Penelope
(Environmental Protection Agency -
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)
R09: Mcdaniel, Penelope
(Environmental Protection Agency -
Region 9)
2231780 4/6/2000TL: Groundwater monitoring rpt, 5/99 semiannual
eventR09: Kwan, Joseph (T R W, Inc)
R09: Solomon, Ejigu (CA Regional
Water Quality Control Board - Los
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
R09: Mcdaniel, Penelope
(Environmental Protection Agency -
Region 9)
R09: Kwan, Joseph (Puente Valley
Steering Committee)
2071336 6/1/2000(Privileged) Attchs A-J to legal memo (Privileged
document target only)
R09: (Environmental Protection
Agency - Region 9)
2231778 6/13/2000
TL: Groundwater monitoring rpt, 11/99 annual event -
former Benchmark Technology facility, 200 S Turnbull
Canyon Rd, City of Industry
R09: (T R W, Inc)
R09: Solomon, Ejigu (CA Regional
Water Quality Control Board - Los
Angeles Region)
2231777 8/16/2000
TL: Groundwater monitoring rpt, 5/2000 semiannual
event - former Benchmark Technology facility, 200 S
Turnbull Canyon Rd, City of Industry
R09: (T R W, Inc)
R09: Solomon, Ejigu (CA Regional
Water Quality Control Board - Los
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
Water Quality Control Board - Los
Angeles Region)
Page 64 of 88
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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
2231773 9/29/2000
TL: Soil & groundwater remediation, 1999 status rpt,
ref former TRW/Benchmark site, 200 Turnbull Canyon
Rd, City of Industry
R09: Kwan, Joseph (T R W, Inc)
R09: Solomon, Ejigu (CA Regional
Water Quality Control Board - Los
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)
R09: Heath, Arthur (CA Regional
Water Quality Control Board - Los
Angeles Region)
2231779 3/1/2001
TL: Groundwater monitoring rpt, 11/2000 annual
event - former Benchmark Technology facility, 200 S
Turnbull Canyon Rd, City of Industry
R09: (T R W, Inc)
R09: Solomon, Ejigu (CA Regional
Water Quality Control Board - Los
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)
R09: Heath, Arthur (CA Regional
Water Quality Control Board - Los
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
R09: Gwinn, Jeffrey (Orion
Environmental, Inc)
R09: Solomon, Ejigu (CA Regional
Water Quality Control Board - Los
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
Quality Control Board - Los Angeles
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
R09: (CA Regional Water Quality
Control Board - Los Angeles Region)
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)
R09: (Orion Environmental, Inc)
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
Water Quality Control Board - Los
Angeles Region)
Page 65 of 88
San Gabriel Valley (Area 4) Superfund Site
La Puente, California
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
2231767 11/30/2001Sign-in sheet for meeting on 11/30/2001 with L
Niemeyer re Benchmark site
R09: Castaneda, Angelica (CA Regional
Water Quality Control Board - Los
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)
R09: Mcdaniel, Penelope
(Environmental Protection Agency -
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)
R09: Mcdaniel, Penelope
(Environmental Protection Agency -
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
Regional Water Quality Control
Board - Los Angeles Region)
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
R09: Dickerson, Dennis (CA Regional
Water Quality Control Board - Los
Angeles Region)
2192330 8/7/2002Ltr: Groundwater monitoring results for 4/2002
monitoring event, Puente Valley OU, w/attchsR09: (Camp Dresser & McKee, Inc)
R09: Mcdaniel, Penelope
(Environmental Protection Agency -
Region 9)
2192372 8/13/2002TL: Groundwater monitoring results for 4/2002
monitoring event, Puente Valley OUR09: (Camp Dresser & McKee, Inc)
R09: Mcdaniel, Penelope
(Environmental Protection Agency -
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)
R09: Mcdaniel, Penelope
(Environmental Protection Agency -
Region 9)
2231760 11/14/2002TL: Groundwater monitoring rpt, 6/2002 semiannual
eventR09: (T R W, Inc)
R09: Castaneda, Angelica (CA
Regional Water Quality Control
Board - Los Angeles Region)
Page 66 of 88
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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
2231759 12/17/2002
Ltr: Transmits info re spills, leaks, investigations &
cleanups (SLIC) oversight cost reimbursement account -
former Benchmark Technology facility, 200 S Turnbull
Canyon Rd, City of Industry, w/o attchs
R09: Dickerson, Dennis (CA Regional
Water Quality Control Board - Los
Angeles Region)
R09: Kwan, Joseph (Northrop
Grumman Corp)
2164036 12/20/2002Ltr: Expresses concerns on San Gabriel Valley Water
Co's B11 & B24 projects
R09: Chamberlin, David (Camp Dresser
& 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)
R09: Chamberlin, David (Camp
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)
R09: Oriola, Dixon (CA Regional
Water Quality Control Board - Los
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
R09: Chamberlin, David (Camp Dresser
& McKee, Inc)
R09: Williams, Carol (Main San
Gabriel Basin Watermaster)
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))
R09: Oriola, Dixon (CA Regional
Water Quality Control Board - Los
Angeles Region)
2231756 2/21/2003Email: Request for boring/well log for Benchmark wells
W20 & W12R09: Mark, Dave (C H 2 M Hill, Inc)
R09: Castaneda, Angelica (CA
Regional Water Quality Control
Board - Los Angeles Region)
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)
R09: Castaneda, Angelica (CA
Regional Water Quality Control
Board - Los Angeles Region)
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
San Gabriel Valley (Area 4) Superfund Site
La Puente, California
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
2224405 3/20/2003Puente Valley OU shallow zone RD status, w/map &
shallow zone monitoring summary table
R09: Mcdaniel, Penelope
(Environmental Protection Agency -
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
R09: Mcdaniel, Penelope
(Environmental Protection Agency -
Region 9)
R09: Williams, Carol (Main San
Gabriel Basin Watermaster)
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
R09: Mcdaniel, Penelope
(Environmental Protection Agency -
Region 9)
R09: Williams, Carol (Main San
Gabriel Basin Watermaster)
2231753 10/1/2003Cleanup & abatement order #R4-2003-0021, w/attchs
A & B
R09: Dickerson, Dennis (CA Regional
Water Quality Control Board - Los
Angeles Region)
R09: (Northrop Grumman Space &
Missions Systems Corp)
2231754 10/1/2003
TL: Cleanup & abatement order #R4-2003-0021, ref
former Benchmark Technology facility, 200 S Turnbull
Canyon Rd, City of Industry
R09: Dickerson, Dennis (CA Regional
Water Quality Control Board - Los
Angeles Region)
R09: Kwan, Joseph (Northrop
Grumman Corp)
2231751 10/29/2003
Sign-in sheet for 10/29/03 meeting between Regional
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
R09: (Northrop Grumman Space &
Missions Systems Corp)
2231750 12/2/2003TL: Groundwater monitoring rpt, 5/2003 semiannual
event
R09: Tabon, Maureen (Northrop
Grumman Corp)
R09: Castaneda, Angelica (CA
Regional Water Quality Control
Board - Los Angeles Region)
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
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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
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: Volz, Christian (McKenna, Long &
Aldridge (Attorneys))
R09: Bacharowski, David (CA
Regional Water Quality Control
Board - Los Angeles Region), R09:
Minor, Dustin (Environmental
Protection Agency - Region 9)
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
R09: Volz, Christian (McKenna, Long &
Aldridge (Attorneys))
R09: Bacharowski, David (CA
Regional Water Quality Control
Board - Los Angeles Region), R09:
Minor, Dustin (Environmental
Protection Agency - Region 9)
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
R09: Chamberlin, David (Camp Dresser
& McKee, Inc)
R09: Mcdaniel, Penelope
(Environmental Protection Agency -
Region 9)
2231746 4/14/2004TL: Annual groundwater monitoring & remediation
system status rpt, 11/2003
R09: Tabon, Maureen (Northrop
Grumman Corp)
R09: Ortez, Carlos (CA Regional
Water Quality Control Board - Los
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
R09: Dickerson, Dennis (CA Regional
Water Quality Control Board - Los
Angeles Region)
R09: Volz, Christian (McKenna, Long
& Aldridge (Attorneys))
2231743 5/18/2004
Sign-in sheet for 5/18/04 meeting between Regional
Board, Northrop Grumman, EPA, CDM & Watermark
re former Benchmark Technology site
2192379 7/9/2004
Ltr: Monthly progress rpt for 6/2004 submitted on
behalf of Northrop Grumman Space & Missions
Systems Corp, formerly TRW Inc, w/TL to P McDaniel
R09: Chamberlin, David (Camp Dresser
& McKee, Inc)
R09: Mcdaniel, Penelope
(Environmental Protection Agency -
Region 9)
Page 69 of 88
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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
2184026 8/9/2004
Ltr: Monthly progress rpt for 7/2004 submitted on
behalf of Northrop Grumman Space & Missions
Systems Corp, formerly TRW Inc, ref UAO #2002-06,
w/TL 7/9/2004 [sic] to P McDaniel
R09: Chamberlin, David (Camp Dresser
& McKee, Inc)
R09: Mcdaniel, Penelope
(Environmental Protection Agency -
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)
R09: Mcdaniel, Penelope
(Environmental Protection Agency -
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
R09: Mcdaniel, Penelope
(Environmental Protection Agency -
Region 9)
R09: Bacharowski, David (CA
Regional Water Quality Control
Board - Los Angeles Region)
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)
R09: (C H 2 M Hill, Inc)R09: (Environmental Protection
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)
R09: (C H 2 M Hill, Inc)R09: (Environmental Protection
Agency - Region 9)
2234071 9/1/2004Groundwater monitoring rpt, 5/2004 semiannual
event
R09: (Northrop Grumman Space &
Missions Systems Corp)
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
R09: Dolegowski, John (C H 2 M Hill,
Inc)
R09: Mcdaniel, Penelope
(Environmental Protection Agency -
Region 9)
Page 70 of 88
San Gabriel Valley (Area 4) Superfund Site
La Puente, California
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
2184027 9/10/2004
Ltr: Monthly progress rpt for 8/2004 submitted on
behalf of Northrop Grumman Space & Missions
Systems Corp, formerly TRW Inc, ref UAO #2002-06,
w/TL 9/14/2004 to P McDaniel
R09: Chamberlin, David (Camp Dresser
& McKee, Inc)
R09: Mcdaniel, Penelope
(Environmental Protection Agency -
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
R09: Dolegowski, John (C H 2 M Hill,
Inc), R09: Menon, Lucy (C H 2 M Hill,
Inc)
R09: Parsons, Scott (GeoTrans, Inc)
2231742 9/17/2004TL: Groundwater monitoring rpt, 5/2004 semiannual
event
R09: Tabon, Maureen (Northrop
Grumman Corp)
R09: Ortez, Carlos (CA Regional
Water Quality Control Board - Los
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
R09: Bishop, Jonathan (CA Regional
Water Quality Control Board - Los
Angeles Region)
R09: Kwan, Joseph (Northrop
Grumman Corp)
2184036 10/13/2004
Ltr: Transmits interim pre-final focused design
submittal markups, Puente Valley OU shallow zone RD,
w/attchs including ltr 9/2/2004 & specifications
R09: Dolegowski, John (C H 2 M Hill,
Inc)
R09: Mcdaniel, Penelope
(Environmental Protection Agency -
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
R09: Bishop, Jonathan (CA Regional
Water Quality Control Board - Los
Angeles Region)
R09: Kwan, Joseph (Northrop
Grumman Corp)
Page 71 of 88
San Gabriel Valley (Area 4) Superfund Site
La Puente, California
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
2184038 10/26/2004
Ltr: Transmits interim pre-final focused design
submittal markups dated 10/13/2004, design sheets,
DVDs, ref Puente Valley OU shallow zone RD, w/o
attchs
R09: Dolegowski, John (C H 2 M Hill,
Inc)
R09: Mcdaniel, Penelope
(Environmental Protection Agency -
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
Ltr: Monthly progress rpt for 10/2004 submitted on
behalf of Northrop Grumman Space & Missions
Systems Corp, ref UAO #2002-06, w/TL 11/10/2004 to
P McDaniel
R09: Chamberlin, David (Camp Dresser
& McKee, Inc)
R09: Mcdaniel, Penelope
(Environmental Protection Agency -
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
R09: Mcdaniel, Penelope
(Environmental Protection Agency -
Region 9)
R09: Bacharowski, David (CA
Regional Water Quality Control
Board - Los Angeles Region)
2069143 12/1/2004Final field investigation rpt for Puente Valley OU
shallow groundwater RDR09: (C H 2 M Hill, Inc)
R09: (Environmental Protection
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)
2193830 12/1/2004Final field investigation rpt for Puente Valley OU
shallow groundwater RD, w/color-coded mapsR09: (C H 2 M Hill, Inc)
R09: (Environmental Protection
Agency - Region 9)
2223883 12/1/2004Final field investigation rpt for Puente Valley OU
shallow groundwater RDR09: (C H 2 M Hill, Inc)
R09: (Environmental Protection
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)
R09: Mcdaniel, Penelope
(Environmental Protection Agency -
Region 9)
2184030 12/8/2004
Ltr: Monthly progress rpt for 11/2004 submitted on
behalf of Northrop Grumman Space & Missions
Systems Corp, ref UAO #2002-06, w/TL 12/8/2004 to P
McDaniel
R09: Chamberlin, David (Camp Dresser
& McKee, Inc)
R09: Mcdaniel, Penelope
(Environmental Protection Agency -
Region 9)
Page 72 of 88
San Gabriel Valley (Area 4) Superfund Site
La Puente, California
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
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
R09: Parsons, Scott (GeoTrans, Inc)
R09: Mcdaniel, Penelope
(Environmental Protection Agency -
Region 9)
2184031 1/10/2005
Ltr: Monthly progress rpt for 12/2004 submitted on
behalf of Northrop Grumman Space & Missions
Systems Corp, ref UAO #2002-06, w/TL 1/10/2005 to P
McDaniel
R09: Chamberlin, David (Camp Dresser
& McKee, Inc)
R09: Mcdaniel, Penelope
(Environmental Protection Agency -
Region 9)
2184032 2/10/2005
Ltr: Monthly progress rpt for 1/2005 submitted on
behalf of Northrop Grumman Space & Missions
Systems Corp, ref UAO #2002-06, w/TL 1/10/2005 [sic]
to P McDaniel
R09: Chamberlin, David (Camp Dresser
& McKee, Inc)
R09: Mcdaniel, Penelope
(Environmental Protection Agency -
Region 9)
2225367 2/17/2005
TL: Preliminary draft RD workplan, interim shallow
zone remedy, Puente Valley OU, City of Industry & La
Puente
R09: Parsons, Scott (GeoTrans, Inc)
R09: Mcdaniel, Penelope
(Environmental Protection Agency -
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
R09: Bishop, Jonathan (CA Regional
Water Quality Control Board - Los
Angeles Region)
R09: Kwan, Joseph (Northrop
Grumman Corp)
2231156 3/1/2005Annual groundwater monitoring & remediation
system status rpt, 11/2004
R09: (Northrop Grumman Space &
Missions Systems Corp)
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
R09: Kwan, Joseph (Northrop
Grumman Corp)
R09: Bacharowski, David (CA
Regional Water Quality Control
Board - Los Angeles Region)
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
R09: Tabon, Maureen (Northrop
Grumman Corp)
R09: Ortez, Carlos (CA Regional
Water Quality Control Board - Los
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
Protection Agency - Dept of Toxic
Substances Control)
R09: Salyer, Kathleen
(Environmental Protection Agency -
Region 9)
Page 73 of 88
San Gabriel Valley (Area 4) Superfund Site
La Puente, California
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
2225381 5/6/2005TL: RD/RA workplan, Puente Valley OU intermediate
zone remedy
R09: Zych, Michele (Camp Dresser &
McKee, Inc)
R09: Barton, Dana (Environmental
Protection Agency - Region 9)
2222889 5/6/2005RD/RA workplan, Puente Valley OU intermediate zone
remedyR09: (Camp Dresser & McKee, Inc)
R09: (Northrop Grumman Space &
Missions Systems Corp)
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
Protection Agency - Region 9)
R09: Cota, Thomas (CA
Environmental Protection Agency -
Dept of Toxic Substances Control)
2069172 5/20/2005Ltr: Expresses concurrence with 5/12/2005 draft
explanation of significant differences (ESD)
R09: Cota, Thomas (CA Environmental
Protection Agency - Dept of Toxic
Substances Control)
R09: Salyer, Kathleen
(Environmental Protection Agency -
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 &
Missions Systems Corp)
2069135 6/10/2005Technical Memo: Puente Valley groundwater quality
data in EPA San Gabriel Basin database
R09: Mark, Dave (C H 2 M Hill, Inc),
R09: Collar, Robert (C H 2 M Hill, Inc)
R09: Barton, Dana (Environmental
Protection Agency - Region 9)
2069134 6/14/2005Explanation of significant differences (ESD) to 1998
interim record of decision (ROD), w/attchs
R09: Adams, Elizabeth (Environmental
Protection Agency - Region 9)
2071852 8/1/2005Memo: Data relied upon for explanation of significant
differences (ESD)
R09: Salyer, Kathleen (Environmental
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
R09: Bishop, Jonathan (CA Regional
Water Quality Control Board - Los
Angeles Region)
R09: Kwan, Joseph (Northrop
Grumman Corp)
Page 74 of 88
San Gabriel Valley (Area 4) Superfund Site
La Puente, California
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
2231154 9/1/2005Groundwater monitoring rpt, 5/2005 semiannual
event
R09: (Northrop Grumman Space &
Missions Systems Corp)
2231733 9/16/2005TL: Groundwater monitoring rpt, 5/2005 semiannual
event
R09: Tabon, Maureen (Northrop
Grumman Corp)
R09: Ortez, Carlos (CA Regional
Water Quality Control Board - Los
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
Protection Agency - Region 9)
2222886 1/1/2006Compact Disc: Intermediate zone (IZ) geophysical logs,
Puente Valley OU
R09: (Environmental Protection Agency
- 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)
R09: (Environmental Protection Agency
- Region 9)
2225382 3/6/2006RD/RA workplan, Puente Valley OU intermediate zone
remedy (revised 3/6/2006)R09: (Camp Dresser & McKee, Inc)
R09: (Northrop Grumman Space &
Missions Systems Corp)
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
Ltr: Groundwater monitoring results for 12/2005
groundwater monitoring event, Puente Valley OU,
w/attchs, w/o compact disc
R09: (Camp Dresser & McKee, Inc)R09: Barton, Dana (Environmental
Protection Agency - Region 9)
2231157 4/1/2006Annual groundwater monitoring & remediation
system status rpt, 11/2005, w/o compact disc
R09: (Northrop Grumman Space &
Missions Systems Corp)
2231736 4/10/2006TL: Annual groundwater monitoring & remediation
system status rpt, 11/2005
R09: Sullivan, Amy (Northrop
Grumman Corp)
R09: Oriola, Dixon (CA Regional
Water Quality Control Board - Los
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
R09: Bishop, Jonathan (CA Regional
Water Quality Control Board - Los
Angeles Region)
R09: Kwan, Joseph (Northrop
Grumman Corp)
2231155 9/1/2006Groundwater monitoring rpt, Jun 2006 semiannual
event, w/o compact disc
R09: (Northrop Grumman Space &
Missions Systems Corp)
Page 75 of 88
San Gabriel Valley (Area 4) Superfund Site
La Puente, California
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
2231734 9/29/2006TL: Groundwater monitoring rpt, 6/2006 semiannual
event
R09: Sullivan, Amy (Northrop
Grumman Corp)
R09: Oriola, Dixon (CA Regional
Water Quality Control Board - Los
Angeles Region)
2222881 10/25/2006
Ltr: Groundwater monitoring results for 6/2006
groundwater monitoring event, Puente Valley OU,
w/attchs, TL & compact disc
R09: (Camp Dresser & McKee, Inc)R09: Barton, Dana (Environmental
Protection Agency - Region 9)
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
event, w/o compact disc
R09: (Northrop Grumman Space &
Missions Systems Corp)
2222880 3/30/2007
Ltr: Groundwater monitoring results for 12/2006
groundwater monitoring event, Puente Valley OU,
w/attchs & TL, w/o compact disc
R09: (Camp Dresser & McKee, Inc)R09: Barton, Dana (Environmental
Protection Agency - Region 9)
2231726 3/31/2007TL: Groundwater monitoring rpt 12/2006 semiannual
event
R09: Sullivan, Amy (Northrop
Grumman Corp)
R09: Oriola, Dixon (CA Regional
Water Quality Control Board - Los
Angeles Region)
2222879 4/17/2007Conceptual/preliminary (30 percent) design rpt,
Puente Valley OU intermediate zone (IZ) remedyR09: (Camp Dresser & McKee, Inc)
R09: (Northrop Grumman Space &
Missions Systems Corp)
2231153 6/1/2007Groundwater extraction well installation rpt - former
Benchmark site, City of IndustryR09: (Orion Environmental, Inc)
R09: (Northrop Grumman Space &
Missions Systems Corp)
2231728 6/11/2007TL: Groundwater extraction well installation rpt -
former Benchmark site, City of Industry, CAO #89-034
R09: Kwan, Joseph (Northrop
Grumman Corp)
R09: Indermill, Don (CA Regional
Water Quality Control Board - Los
Angeles Region)
2231729 7/9/2007
Sign-in sheet for 7/9/2007 meeting between Regional
Board, Northrop Grumman, Orion Environmental &
Watermark re former Benchmark site
R09: (CA Regional Water Quality
Control Board - Los Angeles Region)
2231148 9/1/2007Groundwater monitoring rpt, Jun 2007 semiannual
event, w/o compact disc
R09: (Northrop Grumman Space &
Missions Systems Corp)
Page 76 of 88
San Gabriel Valley (Area 4) Superfund Site
La Puente, California
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
2222888 9/17/2007
Ltr: Groundwater monitoring results for 6/2007
groundwater monitoring event, Puente Valley OU,
w/attchs & TL 9/18/2007, w/o compact disc
R09: (Camp Dresser & McKee, Inc)R09: Barton, Dana (Environmental
Protection Agency - Region 9)
2231727 9/27/2007TL: Groundwater monitoring rpt 6/2007 semiannual
event
R09: Sullivan, Amy (Northrop
Grumman Corp)
R09: Oriola, Dixon (CA Regional
Water Quality Control Board - Los
Angeles Region)
2225379 10/31/2007
TL: Technical memo for installation of extraction wells,
intermediate zone remedy, Puente Valley OU dated
10/30/2007
R09: Kwan, Joseph (Northrop
Grumman Corp)
R09: Barton, Dana (Environmental
Protection Agency - Region 9)
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 &
Missions Systems Corp)
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
R09: (GeoTrans, Inc)
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
R09: (GeoTrans, Inc)
2225400 11/28/2007TL: Draft extraction well completion rpt, interim
shallow zone remedy, Puente Valley OUR09: Parsons, Scott (GeoTrans, Inc)
R09: Barton, Dana (Environmental
Protection Agency - Region 9)
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
Protection Agency - Region 9)
2225339 12/20/2007TL: Draft preliminary design & design basis rpt, interim
shallow zone remedy, Puente Valley OUR09: Parsons, Scott (GeoTrans, Inc)
R09: Barton, Dana (Environmental
Protection Agency - Region 9)
2225397 12/20/2007Preliminary design & design basis rpt, interim shallow
zone remedy, Puente Valley OU, draft versionR09: (GeoTrans, Inc)
Page 77 of 88
San Gabriel Valley (Area 4) Superfund Site
La Puente, California
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
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
Protection Agency - Region 9)
2231149 2/1/2008Groundwater monitoring rpt, Nov 2007 semiannual
event, w/o compact disc
R09: (Northrop Grumman Space &
Missions Systems Corp)
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 &
Missions Systems Corp)
2215632 3/24/2008
Ltr: Groundwater monitoring results for 1/2008
groundwater monitoring event, Puente Valley OU -
compact disc only (appendix B, laboratory results)
R09: (Camp Dresser & McKee, Inc)R09: Barton, Dana (Environmental
Protection Agency - Region 9)
2225390 3/24/2008
Ltr: Groundwater monitoring results for Jan 2008
groundwater monitoring event, Puente Valley OU,
w/attchs, w/o compact disc (appendix B, laboratory
results)
R09: (Camp Dresser & McKee, Inc)R09: Barton, Dana (Environmental
Protection Agency - Region 9)
2225391 3/24/2008
TL: Groundwater monitoring results, 1/2008
groundwater monitoring event, intermediate zone
remedy for Puente Valley OU dated 3/24/2008
R09: Kwan, Joseph (Northrop
Grumman Corp)
R09: Barton, Dana (Environmental
Protection Agency - Region 9)
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
R09: (GeoTrans, Inc)
2225392 7/28/2008Pre-final design rpt, Puente Valley OU intermediate
zone remedy
R09: (Camp Dresser & McKee, Inc),
R09: (Orion Environmental, Inc)
R09: (Northrop Grumman Space &
Missions Systems Corp)
2231150 8/1/2008Groundwater monitoring rpt, May 2008 semiannual
event, w/o compact disc
R09: (Northrop Grumman Space &
Missions Systems Corp)
Page 78 of 88
San Gabriel Valley (Area 4) Superfund Site
La Puente, California
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
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)
2231722 8/12/2008TL: Groundwater monitoring rpt 5/2008 semiannual
event
R09: Sullivan, Amy (Northrop
Grumman Corp)
R09: Oriola, Dixon (CA Regional
Water Quality Control Board - Los
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: (Camp Dresser & McKee, Inc)
R09: (San Gabriel Valley Water Co),
R09: (Northrop Grumman Space &
Missions Systems Corp)
2225373 10/20/2008
TL: Groundwater monitoring results, 8/2008
groundwater monitoring event, intermediate zone
remedy for Puente Valley OU dated 10/17/2008
R09: Kwan, Joseph (Northrop
Grumman Corp)
R09: Chavira, Raymond
(Environmental Protection Agency -
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
R09: Kwan, Joseph (Northrop
Grumman Corp)
R09: Chavira, Raymond
(Environmental Protection Agency -
Region 9)
2225350 2/1/2009Construction quality assurance plan (CQAP), Puente
Valley OUR09: (GeoTrans, Inc)
2225352 2/1/2009Design basis rpt, preliminary design, interim shallow
zone remedy, Puente Valley OU, w/appendicesR09: (GeoTrans, Inc)
R09: (Environmental Protection
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
R09: (GeoTrans, Inc)
2231151 3/1/2009Groundwater monitoring rpt, Nov 2008 semiannual
event, w/o compact disc
R09: (Northrop Grumman Space &
Missions Systems Corp)
2231723 3/23/2009TL: Groundwater monitoring rpt 11/2008 semiannual
event
R09: Sullivan, Amy (Northrop
Grumman Corp)
R09: Oriola, Dixon (CA Regional
Water Quality Control Board - Los
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
R09: Sullivan, Amy (Northrop
Grumman Corp)
R09: (CA Regional Water Quality
Control Board - Los Angeles Region)
Page 79 of 88
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La Puente, California
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
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
R09: Chamberlin, David (Camp Dresser
& McKee, Inc), R09: Zych, Michele
(Camp Dresser & McKee, Inc)
R09: Chavira, Raymond
(Environmental Protection Agency -
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)
R09: Chavira, Raymond
(Environmental Protection Agency -
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
R09: (GeoTrans, Inc)
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
R09: Kwan, Joseph (Northrop
Grumman Corp)
R09: Chavira, Raymond
(Environmental Protection Agency -
Region 9)
1127241 5/13/2009Ltr: Comments on delineation between shallow zone &
intermediate zone in Puente Valley OU, w/o attch
R09: Volz, Christian (McKenna, Long &
Aldridge (Attorneys))
R09: Chavira, Raymond
(Environmental Protection Agency -
Region 9)
2225393 5/20/2009Final design rpt, Puente Valley OU intermediate zone
remedy
R09: (Camp Dresser & McKee, Inc),
R09: (Orion Environmental, Inc)
R09: (Northrop Grumman Space &
Missions Systems Corp)
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)
R09: (GeoTrans, Inc)
2225892 5/21/2009
Draft comprehensive shallow zone groundwater
monitoring & sampling rpt, 1st quarter 2009, Puente
Valley OU shallow zone, v 3 (appendix C, water
sampling field forms, continued)
R09: (GeoTrans, Inc)
2225893 5/21/2009
Draft comprehensive shallow zone groundwater
monitoring & sampling rpt, 1st quarter 2009, Puente
Valley OU shallow zone, v 1
R09: (GeoTrans, Inc)
Page 80 of 88
San Gabriel Valley (Area 4) Superfund Site
La Puente, California
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
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
R09: Parsons, Scott (GeoTrans, Inc)
R09: Chavira, Raymond
(Environmental Protection Agency -
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
R09: (GeoTrans, Inc)
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
R09: (GeoTrans, Inc)
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
R09: Chavira, Raymond
(Environmental Protection Agency -
Region 9), R09: Ball, Rex (Los
Angeles County)
2225356 6/1/2009Construction quality assurance plan (CQAP), Puente
Valley OUR09: (GeoTrans, Inc)
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
R09: Parsons, Scott (GeoTrans, Inc)
R09: Chavira, Raymond
(Environmental Protection Agency -
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
R09: Parsons, Scott (GeoTrans, Inc)
R09: Chavira, Raymond
(Environmental Protection Agency -
Region 9)
2225354 6/2/2009
Ltr: Transmits hardcopy & electronic copy of
construction quality assurance plan (CQAP) dated
6/2009, w/o attchs
R09: Parsons, Scott (GeoTrans, Inc)
R09: Chavira, Raymond
(Environmental Protection Agency -
Region 9)
Page 81 of 88
San Gabriel Valley (Area 4) Superfund Site
La Puente, California
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
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
R09: Parsons, Scott (GeoTrans, Inc)
R09: Chavira, Raymond
(Environmental Protection Agency -
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
R09: Parsons, Scott (GeoTrans, Inc)
R09: Chavira, Raymond
(Environmental Protection Agency -
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: Chavira, Raymond (Environmental
Protection Agency - Region 9)
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
R09: Chavira, Raymond (Environmental
Protection Agency - Region 9)
R09: Kwan, Joseph (Northrop
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: Volz, Christian (McKenna, Long &
Aldridge (Attorneys))
R09: Egoscue, Tracy (CA Regional
Water Quality Control Board - Los
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
R09: Chavira, Raymond (Environmental
Protection Agency - Region 9)
R09: Chang, Grace (Los Angeles
County - Office of the County
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)
R09: Kwan, Joseph (Northrop
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
R09: Chavira, Raymond (Environmental
Protection Agency - Region 9)
R09: Chang, Grace (Los Angeles
County - Office of the County
Counsel)
Page 82 of 88
San Gabriel Valley (Area 4) Superfund Site
La Puente, California
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
2231152 9/1/2009Groundwater monitoring rpt, Jun 2009 semiannual
event, w/o compact disc
R09: (Northrop Grumman Space &
Missions Systems Corp)
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
R09: Chavira, Raymond (Environmental
Protection Agency - Region 9)
R09: Chang, Grace (Los Angeles
County - Office of the County
Counsel)
2193762 9/15/2009Email: Overview of license agreement discussion with
Los Angeles County
R09: Volz, Christian (McKenna, Long &
Aldridge (Attorneys))
R09: Maldonado, Lewis
(Environmental Protection Agency -
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: Salyer, Kathleen (Environmental
Protection Agency - Region 9)
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)
R09: (Environmental Protection
Agency - Region 9)
1117792 9/16/2009Overheads: Coordination meeting 2, County of Los
Angeles
R09: (Environmental Protection Agency
- Region 9)R09: (Los Angeles County)
1117791 9/17/2009Flood Control District permit for water lines crossing
district storm drains, permit #PCFL 200801957
R09: (Los Angeles County - Dept of
Public Works)R09: (Northrop Grumman Corp)
1117794 9/17/2009Excavation permit for pipeline construction, permit
#PCEX 200802231
R09: (Los Angeles County - Dept of
Public Works)R09: (Northrop Grumman Corp)
2231160 9/17/2009 TL: Groundwater monitoring rpt 6/2009R09: Kwan, Joseph (Northrop
Grumman Corp)
R09: Oriola, Dixon (CA Regional
Water Quality Control Board - Los
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: Takata, Keith (Environmental
Protection Agency - Region 9)
R09: (Los Angeles County), R09: (Los
Angeles County - Flood Control
District)
Page 83 of 88
San Gabriel Valley (Area 4) Superfund Site
La Puente, California
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
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: Takata, Keith (Environmental
Protection Agency - Region 9)
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
R09: (Orion Environmental, Inc)R09: (Northrop Grumman Space &
Missions Systems Corp)
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
R09: (Orion Environmental, Inc)R09: (Northrop Grumman Space &
Missions Systems Corp)
2225364 10/14/2009
Comprehensive shallow zone groundwater monitoring
& sampling rpt, 2nd quarter 2009, Puente Valley OU,
w/o compact disc
R09: (GeoTrans, Inc)
2225368 10/14/2009
Ltr: Transmits hardcopy & electronic copy of
comprehensive shallow zone groundwater monitoring
& sampling rpt, 2nd quarter 2009, Puente Valley OU,
w/o attchs
R09: Parsons, Scott (GeoTrans, Inc)
R09: Chavira, Raymond
(Environmental Protection Agency -
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
R09: Gwinn, Jeffrey (Orion
Environmental, Inc)
R09: Chavira, Raymond
(Environmental Protection Agency -
Region 9)
2225885 11/24/2009
Comprehensive shallow zone groundwater monitoring
& sampling rpt, 3rd quarter 2009, Puente Valley OU
shallow zone, w/o compact disc (appendices C & D) &
oversized maps
R09: (GeoTrans, Inc)
2225887 11/24/2009
Ltr: Transmits hardcopy & electronic copy of
comprehensive shallow zone groundwater monitoring
& sampling rpt, 3rd quarter 2009, Puente Valley OU
shallow zone, w/o attchs
R09: Parsons, Scott (GeoTrans, Inc)
R09: Chavira, Raymond
(Environmental Protection Agency -
Region 9)
Page 84 of 88
San Gabriel Valley (Area 4) Superfund Site
La Puente, California
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
1127226 12/9/2009Ltr: Bi-monthly progress rpt for 10/2009 & 11/2009,
Puente Valley OU intermediate zone (IZ) remedy
R09: Chamberlin, David (Camp Dresser
& McKee, Inc)
R09: Chavira, Raymond
(Environmental Protection Agency -
Region 9)
2225901 2/12/2010
Comprehensive shallow zone groundwater monitoring
& sampling rpt, 4th quarter 2009, Puente Valley OU
shallow zone, w/o compact disc (appendices C & D)
R09: (GeoTrans, Inc)
2225903 2/12/2010
Ltr: Transmits hardcopy & electronic copy of
comprehensive shallow zone groundwater monitoring
& sampling rpt, 4th quarter 2009, Puente Valley OU
shallow zone, w/o attchs
R09: Parsons, Scott (GeoTrans, Inc)
R09: Chavira, Raymond
(Environmental Protection Agency -
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
R09: Parsons, Scott (GeoTrans, Inc)
R09: Chavira, Raymond
(Environmental Protection Agency -
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
Water Quality Control Board - Los
Angeles Region)
R09: Kwan, Joseph (Northrop
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
R09: Chavira, Raymond (Environmental
Protection Agency - Region 9)
R09: Kwan, Joseph (Northrop
Grumman Corp)
1127227 4/6/2010Ltr: Bi-monthly progress rpt for 2/2010 & 3/2010,
Puente Valley OU intermediate zone (IZ) remedy
R09: Chamberlin, David (Camp Dresser
& McKee, Inc)
R09: Chavira, Raymond
(Environmental Protection Agency -
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
Water Quality Control Board - Los
Angeles Region)
R09: Kwan, Joseph (Northrop
Grumman Corp)
1127228 6/10/2010Ltr: Bi-monthly progress rpt for 4/2010 & 5/2010,
Puente Valley OU intermediate zone (IZ) remedy
R09: Chamberlin, David (Camp Dresser
& McKee, Inc)
R09: Chavira, Raymond
(Environmental Protection Agency -
Region 9)
Page 85 of 88
San Gabriel Valley (Area 4) Superfund Site
La Puente, California
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
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)
R09: Chavira, Raymond
(Environmental Protection Agency -
Region 9)
1127231 9/1/2010
Groundwater monitoring rpt, Jun 2010 semiannual
event - former Benchmark Technology facility, 200 S
Turnbull Canyon Rd, City of Industry
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
1127230 10/8/2010Ltr: Bi-monthly progress rpt for 8/2010 & 9/2010,
Puente Valley OU intermediate zone (IZ) remedy
R09: Chamberlin, David (Camp Dresser
& McKee, Inc)
R09: Chavira, Raymond
(Environmental Protection Agency -
Region 9)
1127232 10/8/2010
Ltr: Bi-monthly progress rpt, reporting period 8/2010
& 9/2010, shallow zone interim RD/RA, Puente Valley
OU, w/attchs
R09: Parsons, Scott (GeoTrans, Inc)
R09: Chavira, Raymond
(Environmental Protection Agency -
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
R09: Chavira, Raymond (Environmental
Protection Agency - Region 9)
R09: Kwan, Joseph (Northrop
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)
R09: (C H 2 M Hill, Inc)
1127234 12/9/2010
Ltr: Bi-monthly progress rpt, reporting period 10/2010
& 11/2010, shallow zone interim RD/RA, Puente Valley
OU
R09: Parsons, Scott (GeoTrans, Inc)
R09: Chavira, Raymond
(Environmental Protection Agency -
Region 9)
1127233 12/10/2010Ltr: Bi-monthly progress rpt for 10/2010 & 11/2010,
Puente Valley OU intermediate zone (IZ) remedy
R09: Chamberlin, David (Camp Dresser
& McKee, Inc)
R09: Chavira, Raymond
(Environmental Protection Agency -
Region 9)
Page 86 of 88
San Gabriel Valley (Area 4) Superfund Site
La Puente, California
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
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
R09: Chavira, Raymond (Environmental
Protection Agency - Region 9)
R09: Kwan, Joseph (Northrop
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)
R09: Barquest, Bradley (United
Technologies Corp)
R09: Chavira, Raymond
(Environmental Protection Agency -
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
R09: Kwan, Joseph (Northrop
Grumman Corp)
R09: Chavira, Raymond
(Environmental Protection Agency -
Region 9)
1127496 2/9/2011
Ltr: Bi-monthly progress rpt, reporting period 12/2010
& 1/2011, shallow zone interim RD/RA, Puente Valley
OU, w/attchs
R09: Parsons, Scott (GeoTrans, Inc)
R09: Chavira, Raymond
(Environmental Protection Agency -
Region 9)
1127491 2/10/2011Ltr: Bi-monthly progress rpt for 12/2010 & 1/2011,
Puente Valley OU intermediate zone (IZ) remedy
R09: Chamberlin, David (Camp Dresser
& McKee, Inc)
R09: Chavira, Raymond
(Environmental Protection Agency -
Region 9)
1127500 2/28/2011Technical Memo: Review of Updated PVOU
groundwater flow model (draft)
R09: Dolegowski, John (C H 2 M Hill,
Inc), R09: Sun, Kerang (C H 2 M Hill,
Inc)
R09: Chavira, Raymond
(Environmental Protection Agency -
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)
R09: Chavira, Raymond (Environmental
Protection Agency - Region 9)
R09: Barquest, Bradley (United
Technologies Corp)
1127492 3/2/2011Final 1st 5-year review rpt, Puente Valley OU, w/apps
A-G
R09: (Environmental Protection Agency
- 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
R09: (Environmental Protection Agency
- Region 9)
1127508 3/15/2011Ltr: Requests extension for completion date of
supplemental environmental project
R09: Barquest, Bradley (United
Technologies Corp)
R09: Chavira, Raymond
(Environmental Protection Agency -
Region 9)
Page 87 of 88
San Gabriel Valley (Area 4) Superfund Site
La Puente, California
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
1127507 4/7/2011Ltr: Bi-monthly progress rpt (2/2011 - 3/2011), shallow
zone interim RD/RA, Puente Valley OUR09: Parsons, Scott (GeoTrans, Inc)
R09: Chavira, Raymond
(Environmental Protection Agency -
Region 9)
1127506 4/8/2011Ltr: Approval to extend supplemental environmental
project completion date
R09: Chavira, Raymond (Environmental
Protection Agency - Region 9)
R09: Barquest, Bradley (United
Technologies Corp)
1127505 4/11/2011Ltr: Bi-monthly progress rpt for 2/2011 & 3/2011,
Puente Valley OU, intermediate zone (IZ) remedy
R09: Chamberlin, David (Camp Dresser
& McKee, Inc)
R09: Chavira, Raymond
(Environmental Protection Agency -
Region 9)
1127503 4/15/2011
Ltr: Comments on Benchmark Technologies facility
semi-annual groundwater monitoring rpt, Puente
Valley OU
R09: Macnicholl, Peter (CA
Environmental Protection Agency -
Dept of Toxic Substances Control)
R09: Chavira, Raymond
(Environmental Protection Agency -
Region 9)
1127504 4/19/2011Groundwater monitoring & sampling rpt, 4th quarter
2010, Puente Valley OU
R09: (GeoTrans, Inc), R09: (Tetra Tech,
Inc)
R09: (Environmental Protection
Agency - Region 9)
1127502 5/10/2011
Ltr: Response to comments on Draft technical memo
re review of updated PVOU groundwater model,
w/attch
R09: Parsons, Scott (GeoTrans, Inc)
R09: Chavira, Raymond
(Environmental Protection Agency -
Region 9)
1127498 6/10/2011Ltr: Bi-monthly progress rpt for 4/2011 & 5/2011,
Puente Valley OU, intermediate zone (IZ) remedy
R09: Chamberlin, David (Camp Dresser
& McKee, Inc)
R09: Chavira, Raymond
(Environmental Protection Agency -
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)
R09: Chavira, Raymond
(Environmental Protection Agency -
Region 9)
Page 88 of 88