Pacific Southwest, Region 9: Superfund
Serving Arizona, California, Hawaii, Nevada, the Pacific Islands, and Tribal Nations
Del Amo Facility
Superfund Site
Dual Site Groundwater Operable Unit (part 5)
Administrative Record Index
To request copies of administrative record documents, an electronic order form is available.
On March 30, 1999, after considering and responding to public comments, EPA selected the cleanup action for the Dual Site Groundwater Operable Unit at the Montrose Chemical and Del Amo Superfund Sites, in Los Angeles, California. This cleanup applies to groundwater at both sites.
For the Montrose Chemical and Del Amo Superfund sites, EPA is housing a copy of its administrative record at this library. The documents contained in this AR were considered by the EPA in the process of selecting this groundwater cleanup action. A copy of the AR is also maintained at the EPA Regional Office in San Francisco.
The Dual Site Groundwater Operable Unit AR is entirely on microfilm. These microfilmed documents are arranged in ascending chronological order with undated documents at the beginning of the sequence. Each document has been assigned a unique identification number.
This administrative record includes by reference the documents in the Del Amo Superfund Site Waste Pits Operable Unit AR and the Montrose Chemical Corporation Superfund Site Removal Action No. 2 AR (Sediments in Sanitary Sewers). These administrative records are also available for viewing at this repository.
The list of U.S. Environmental Protection Agency guidance documents that were considered or relied upon in the selection of the remedial action is document AR #5014 in this AR file. Copies of the guidance documents are contained in the Compendium of CERCLA Response Selection
Guidance Documents and are available for review in the Region 9 Superfund Records Center.
As an additional service to the public, EPA has also placed paper (hard) copies of 6 critical reports related to this remedial action selection process in this library. While these reports appear on the microfilm as well, they are easier to use and review in paper copy. If you are interested in the paper copies of these reports, please ask the librarian where they can be reviewed.
The reports which are present in this library in both paper copy and microfilm copy are:
1. Final Remedial Investigation Report for the Montrose Site; Los Angeles, California; May 18, 1998; originally prepared by Montrose Chemical Corporation of California and Revised by U.S. Environmental Protection Agency, Region IX. 2 volumes.
2. Final Groundwater Remedial Investigation Report; Del Amo Study Area; May 15, 1998; prepared by Dames & Moore for the Shell Oil Company and The Dow Chemical Company. 3 volumes.
3. Final Joint Groundwater Feasibility Study for the Montrose and Del Amo Sites; Los Angeles, California; May 19, 1998; prepared by CH2M Hill for the U.S. Environmental Protection Agency, Region IX. 1 volume.
4. Joint Groundwater Risk Assessment; Montrose and Del Amo Sites; Los Angeles County, California; February 1998; prepared by McLaren Hart for the Montrose Chemical Corporation, and Dames & Moore for the Shell Oil Company and The Dow Chemical Company. 1 volume.
5. Supplement to the Joint Groundwater Risk Assessment for the Montrose and Del Amo Sites; Los Angeles, California; May 18, 1998; prepared by CH2M Hill for the U.S. Environmental Protection Agency, Region IX. 1 volume.
6. Record of Decision for Dual Site Groundwater Operable Unit; Montrose Chemical and Del Amo Superfund Sites; March 30, 1999; U.S. EPA Region IX. 2 volumes.
The Record of Decision (item 6) can also be viewed or downloaded from the World Wide Web at http://www.epa.gov/region09/waste.
List of Abbreviations and Acronyms Used in Administrative Record Index
Abbreviation | Meaning |
& | and |
AO | Administrative Order |
AOC | Administrative Order on Consent |
AP | Aerial Photo |
ARAR | Applicable or Relevant and Appropriate Restriction (or requirement) |
ASCII | American Standard Code for Information Interchange |
ASTM | American Society for Testing and Materials |
ATI | Analytical Technologies, Inc |
attch | attachment |
BHC | Benzene Hexachloride |
BNA | Bureau of National Affairs |
CA | State of California |
CERCLA | Comprehensive Environmental Response, Compensation, and Liability Act of 1980 (Superfund) |
CERCLIS | Comprehensive Environmental Response, Compensation, and Liability Information System |
CH2M Hill | Environmental Company |
CPT | Cone Penetrometer Test |
CRWQCB | California Regional Water Quality Control Board |
DDD | Dichlorodiphenyldichloroethane |
DDE | Dichlorodiphenyldichloroethylene |
DDT | Dichlorodiphenyltrichloroethane |
DNAPL | Dense Nonaqueous Phase Liquid |
DTSC | California Department of Toxic Substances Control |
EIR | Environmental Impact Report |
EMSL | Environmental Monitoring Support (or Systems) Laboratory |
encl | enclosure |
EPA | Environmental Protection Agency |
ES | Emergency Standard |
FFS | Focused Feasibility Study |
fr | from |
FRC | Federal Records Center |
FS | Feasibility Study |
FSP | Field Sampling Plan |
FY | Fiscal Year |
GS/MS | Gas Chromatography/Mass Spectrometry |
gw | groundwater |
HSP | Health and Safety Plan |
ICI | PRP Contractor |
IRM | Interim Remedial Measure |
JGWFS | Joint Groundwater Feasibility Study |
LA | Los Angeles |
LACFCD | Los Angeles County Flood Control District |
LDR | Land Disposal Restriction(s) |
LNAPL | Land Nonaqueous Phase Liquid |
LOE | Level of Effort |
Ltr | Letter |
MCB | Monochlorobenzene |
mtg | meeting |
NAPL | Nonaqueous Phase Liquid |
NJ | State of New Jersey |
NOPES | Non-occupational Pesticide Exposure Study |
NPL | National Priorities List |
NRRB | National Remedy Review Board |
NW | Northwest |
OU | Operable Unit |
OUFS | Operable Unit Feasibilty Study |
PA | Preliminary Assessment |
PAH | Polycyclic Aromatic Hydrocarbon |
p-CBSA | Para-Chlorobenzene Sulfonic Acid |
PEA | Preliminary Endangerment Assessment |
PHEE | Public Health and Environmental Evaluation |
PRP | Potentially Responsible Party |
QA | Quality Assurance |
QA/QC | Quality Assurance/Quality Control |
QAMS | Quality Assurance Management Staff |
QAPP | Quality Assurance Project Plan |
QC | Quality Control |
RA | Remedial Action |
RAGS | Risk Assessment Guidance for Superfund |
RAP | Regional Analytical Program |
RAS | Routine Analytical Services |
RCRA | Resource Conservation and Recovery Act |
RI | Remedial Investigation |
RI/FS | Remedial Investigation /Feasibility Study |
ROC | Record of Communication |
ROD | Record of Decision |
rpt | report |
RWQCB | Regional Water Quality Control Board |
SAP | Sampling & Analysis Plan |
SAS | Special Analytical Services |
SDG | Sample Delivery Group |
SE | Southeast |
SOW | Statement of Work or Scope of Work |
STORET | Storage and Retrieval of Water Quality Data System |
SVE | Soil Vapor Extraction |
SVOC | Semivolatile Organic Chemical |
SWRCB | State Water Resources Control Board |
TAG | Technical Assistance Grant |
TCL | Toxicology Data Base or Target Compound List |
TL | Transmittal Letter |
TOC | Total Organic Carbon (or Compound) |
US | United States |
USA | United Stated of America |
v | versus or volume |
VOC | Volatile Organic Compound |
w/ | with |
w/o | without |
WRC | Water Resources Council |
Administrative Record Index
Doc Date | SUBJECT | Author / Author Affiliate | Addressee / Addressee Affiliate | AR # | Roll # | Frame # | Doc ID |
1995/07/24 | Memo: Notification that conference call, to discuss phase 2 wells, will be held on 7/28/95 (faxed) | Tom Vinckier / Dames & Moore | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4000 | 028 | 0108 | 0639-93130 |
1995/07/25 | Mtg agenda: Dow/EPA mtg on Del Amo, w/TL to J Rosati fr L Bone (lobbyists for Dow) | Dow Chemical Co | - | 4001 | 028 | 0110 | 0639-94129 |
1995/07/27 | Ltr: Transmits draft well location figures for use during conference call scheduled for 7/28/95, w/o encls, w/fax TL | Andrew Barnes / Dames & Moore | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4002 | 028 | 0112 | 0639-93128 |
1995/07/31 | Field rpt - surface water, sediments & biological sampling in stormwater pathway fr Montrose Chemical Co to LA Harbor, w/TL to Dhont fr Singh | C H 2 M Hill | Environmental Protection Agency - Region 9 | 4003 | 028 | 0115 | 0639-02164 |
1995/07/31 | Oversize maps (5): Draft depositional environments - cross sections A-A' through E-E', Del Amo study area, 24in x 36.5in, 1in=5ft (mapcase) | Dames & Moore | Shell Oil Co | 4004 | 028 | 0456 | 0639-04846 |
1995/08/00 | Article: Havoc in hormones (in Audubon, Cranes of Japan, 7/95-8/95, 60-67) | Jon Luoma / Audubon Society | - | 4005 | 028 | 0458 | 0639-02030 |
1995/08/00 | Fact sheet: EPA announces extension of public review period of removal workplan (English & Spanish) | Environmental Protection Agency - Region 9 | - | 4006 | 028 | 0468 | 0639-92237 |
1995/08/01 | Ltr: Additional gw monitoring, w/attchs & TL to J Dhont, U Singh & F Bachman fr D Hargis | David Hargis / Hargis & Assoc, Inc | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4007 | 028 | 0471 | 0639-02148 |
1995/08/01 | Ltr: Additional gw monitoring, w/attchs | David Hargis / Hargis & Assoc, Inc | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4008 | 028 | 0482 | 0639-02149 |
1995/08/01 | Ltr: Transmits interim plan, phase 2 gw investigs, w/plan, well tables, benzene concentrations figs, & attch A (gw investigs operating procedures) | Chuck Paine / Shell Oil Co | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4009 | 028 | 0492 | 0639-03215 |
1995/08/18 | Ltr: Phase 2 RI gw investigations, observation of hydrocarbon at exploratory soil boring B-6, w/memo 8/17/95 re same & draft field boring log | Chuck Paine / Shell Oil Co | Janet Rosati / Environmental Protection Agency - Region 9 | 4010 | 028 | 0527 | 0639-03234 |
1995/08/18 | Ltr: Transmits initial release Public health assessment, 7/18/95, w/o attch | William Nelson / US Dept of Health & Human Services - Agency for Toxic Substances & Disease Registry | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4011 | 028 | 0537 | 0639-92276 |
1995/08/21 | Memo: Comments on draft phase 2 RI workplan, data gaps, soil gas QC & final remedy selection for contaminated soil in waste pit area | Udai Singh / C H 2 M Hill | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4012 | 028 | 0539 | 0639-03777 |
1995/08/21 | Expanded workplace air monitoring draft rpt, phase 1 RI, w/handwritten note & TL to J Rosati fr U Singh, 8/22/95 | C H 2 M Hill | Environmental Protection Agency - Region 9 | 4013 | 028 | 0562 | 0639-03955 |
1995/08/22 | Public health assessment (initial release) | CA Dept of Health Services | Environmental Protection Agency - Region 9 | 4014 | 028 | 0909 | 0639-02165 |
1995/08/23 | Data validation rpt: Case: 23705, memo #1, 18 volatile & 9 semivolatile water samples, collected 6/21-23/95 & 6/27/95, w/TL to J Rosati fr M Weiner | Mike McIntosh / I C F Kaiser Engineers, Inc | Environmental Protection Agency - Region 9 | 4015 | 028 | 1000 | 0639-03235 |
1995/08/29 | Articles (19): Biological degradation of para-chlorobenzene sulfonic acid (p-CBSA), 1982-94 | - | - | 4016 | 028 | 1040 | 0639-03380 |
1995/08/29 | TL: Literature re biological degradation of specified chemical (p-CBSA research) | Ann Azadpour / Dynamac Corp | Michelle Baron / Environmental Protection Agency - Region 9 | 4017 | 028 | 1203 | 0639-93240 |
1995/08/30 | Review of Montrose FS documents (draft), w/TL to J Dhont fr U Singh | C H 2 M Hill | Environmental Protection Agency - Region 9 | 4018 | 028 | 1205 | 0639-03778 |
1995/08/30 | Memo: Review & comments on 8/1/95 Hargis ltr re gw monitoring | Udai Singh / C H 2 M Hill | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4019 | 028 | 1250 | 0639-94479 |
1995/08/31 | Memo: Surface pathways from Del Amo site, w/attchs | Steve Simanonok / Environmental Protection Agency - Region 9 | Janet Rosati / Environmental Protection Agency - Region 9 | 4020 | 028 | 1254 | 0639-93080 |
1995/09/00 | EPA comments on draft Public health assessment for Montrose Chemical Corp by ATSDR 8/22/95, w/TL to W Nelson fr J Dhont 9/6/95 | Environmental Protection Agency - Region 9 | US Dept of Health & Human Services - Agency for Toxic Substances & Disease Registry | 4021 | 028 | 1259 | 0639-02146 |
1995/09/00 | Verbal comments re workplan unsupported conclusions, phase 2, w/handwritten notes by J Dhont | Peter Mock / C H 2 M Hill | - | 4022 | 028 | 1267 | 0639-03232 |
1995/09/00 | 12 graphics (drafts) for planning discussions re locations of phase 2 gw monitoring wells | Dames & Moore | Environmental Protection Agency - Region 9 | 4023 | 028 | 1277 | 0639-03255 |
1995/09/00 | Fact sheet: DDT-contaminated sediments to be removed fr county sewers along Normandie Ave (in English & Spanish) | Environmental Protection Agency - Region 9 | - | 4024 | 028 | 1299 | 0639-92188 |
1995/09/00 | Ltr: Request for gw treatability test results, phase 1, QAPP & SAP, w/TL to M Palmer fr J Dhont 9/5/95 | Jeffrey Dhont / Environmental Protection Agency - Region 9 | Michael Palmer / Hargis & Assoc, Inc | 4025 | 028 | 1302 | 0639-92251 |
1995/09/00 | Fact sheet: DDT-contaminated sediments to be removed fr county sewers along Normandie Ave (English & Spanish) | Environmental Protection Agency - Region 9 | - | 4026 | 028 | 1305 | 0639-93215 |
1995/09/01 | Gw monitoring rpt, 4th quarter 1994, Del Amo (draft), w/TL to J Dhont fr J Dudley | Dames & Moore | - | 4027 | 028 | 1308 | 0639-02150 |
1995/09/06 | Memo: Transmits list of possible discussion topics for scoping/planning work sessions, phase 2 Del Amo RI, w/encl (faxed) | John Dudley / Dames & Moore | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4028 | 028 | 1344 | 0639-93111 |
1995/09/07 | Memo: Preliminary unvalidated lab data - 4 core samples collected at exploratory boring B-5, w/rpt of analytical results (faxed) | John Dudley / Dames & Moore | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4029 | 028 | 1347 | 0639-03247 |
1995/09/12 | Memo: Requests help in reviewing gw treatability test results rpt re effectiveness of carbon treatment system for p-CBSA, w/TL to D Draper fr M Baron | Michelle Baron / Environmental Protection Agency - Region 9 | Don Draper / Environmental Protection Agency - Office of Research & Development | 4030 | 028 | 1357 | 0639-93241 |
1995/09/14 | PA/SI, Gardena Valley Dump #4, w/9/19/95 remedial site assessment decision | Gregory Carroll / Bechtel Environmental, Inc | Gordon Woodrow / Environmental Protection Agency - Region 9 | 4031 | 028 | 1359 | 0639-03609 |
1995/09/15 | Ltr: Transmits tech note, proposed relocation of phase 2 monitoring wells U-5 & B-5, w/tech note, figs, ltr 9/12/95 & memo 9/6/95 fr Shell re sampling | D Fates / Dames & Moore | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4032 | 028 | 1375 | 0639-03199 |
1995/09/18 | Ltr: DTSC review of Final preliminary endangerment assessment (PEA) rpt (English & Spanish) | Haissam Salloum / CA Environmental Protection Agency - Dept of Toxic Substances Control | - | 4033 | 028 | 1398 | 0639-92211 |
1995/09/18 | Memo: 5 wells purged re monitoring for presence of dense nonaqueous phase liquid (DNAPL), w/TL to J Dhont fr M Palmer 9/25/95 | J Callian / Hargis & Assoc, Inc | file -- | 4034 | 028 | 1401 | 0639-92238 |
1995/09/18 | Memo: Review of Remedial investigative work phase 2A - gw, soil & sediment sampling plan & Remedial investigative work QAPP, w/TL 9/19/95 | Udai Singh / C H 2 M Hill | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4035 | 028 | 1404 | 0639-94480 |
1995/09/19 | Mtg agenda: Discussion topics for RI work session #1, phase 1 RI review & phase 2 RI planning, held on 9/21/95, w/fax TL | John Dudley / Dames & Moore | Janet Rosati / Environmental Protection Agency - Region 9 | 4036 | 028 | 1408 | 0639-93117 |
1995/09/21 | Mtg agenda: RI work session #1, phase 1 RI review & phase 2 RI planning, quarterly project mtg, w/handouts re soil gas & risk assessment strategy rpt | Environmental Protection Agency - Region 9 | - | 4037 | 028 | 1411 | 0639-03248 |
1995/09/21 | Mtg agenda: RI work session #1, phase 1 RI review & phase 2 RI planning, quarterly project mtg, w/handouts, handwritten notes & marginalia | Environmental Protection Agency - Region 9 | - | 4038 | 028 | 1427 | 0639-04873 |
1995/09/25 | Memo: Responds to 9/12/95 request re effectiveness of carbon treating para-chlorobenzene sulfonic acid (p-CBSA) in gw, w/TL header | Don Draper / Environmental Protection Agency - Superfund Technical Support Center for Monitoring & Site Character | Michelle Baron / Environmental Protection Agency - Region 9 | 4039 | 028 | 1443 | 0639-92310 |
1995/09/25 | Memo: Responds to 9/12/95 request re effectiveness of carbon treating para-chlorobenzene sulfonic acid (p-CBSA) in gw | Don Draper / Environmental Protection Agency - Superfund Technical Support Center for Monitoring & Site Character | Michelle Baron / Environmental Protection Agency - Region 9 | 4040 | 028 | 1446 | 0639-93550 |
1995/09/26 | Ltr: Notice of gw monitoring field activity scheduled at site | Michael Palmer / Hargis & Assoc, Inc | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4041 | 028 | 1449 | 0639-92220 |
1995/09/26 | Ltr: Notice of gw monitoring field activity scheduled at site, w/TL | Michael Palmer / Hargis & Assoc, Inc | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4042 | 028 | 1451 | 0639-92221 |
1995/09/26 | Ltr: Notice of potential EPA staff furlough & consequences | Jeffrey Dhont / Environmental Protection Agency - Region 9 | Frank Bachman / Montrose Chemical Corp | 4043 | 028 | 1454 | 0639-92252 |
1995/09/27 | Well destruction workplan, LA County Flood Control District (LACFCD) well #795 | Hargis & Assoc, Inc | - | 4044 | 028 | 1457 | 0639-02187 |
1995/09/27 | Ltr: Response to EPA comments re LA County Flood Control District (LACFCD) well #795 & additonal closure tasks, w/attch 2, w/o attch 1 | David Hargis / Hargis & Assoc, Inc | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4045 | 028 | 1476 | 0639-02188 |
1995/09/27 | Memo: Review & comments re 2/18/94 draft field sampling plan (FSP), app A of draft phase 2 RI workplan | Mark Petersen / Environmental Protection Agency - Region 9 | Janet Rosati / Environmental Protection Agency - Region 9 | 4046 | 028 | 1492 | 0639-03205 |
1995/09/27 | Ltr: Transmits requested gw data fr wells in backyard on West 204th St, w/encls | John Blevins / Environmental Protection Agency - Region 9 | Tom Frame / Del Amo Action Committee | 4047 | 028 | 1500 | 0639-93131 |
1995/09/28 | Ltr: Transmits EPA comments on Montrose Chemical Corp proposal for gw sampling, w/attch & TL to M Palmer fr J Dhont | Jeffrey Dhont / Environmental Protection Agency - Region 9 | Frank Bachman / Montrose Chemical Corp | 4048 | 028 | 1506 | 0639-02147 |
1995/09/28 | Ltr: Transmits EPA comments on Montrose Chemical Corp proposal for gw sampling, w/handwritten note & attch | Jeffrey Dhont / Environmental Protection Agency - Region 9 | Frank Bachman / Montrose Chemical Corp | 4049 | 028 | 1514 | 0639-02151 |
1995/09/28 | ROC: 9/21/95 & 9/28/95 calls re review of Montrose treatability test & effectiveness of para-chlorobenzene sulfonic acid (p-CBSA), w/marginalia | Michelle Brown / Environmental Protection Agency - Region 9 | Don Draper | 4050 | 028 | 1521 | 0639-93376 |
1995/09/29 | Draft rpt & workplan laboratory & data analysis & hydraulic extraction workplan MW-20 pilot program, Del Amo study area, w/o plates | Dames & Moore | Shell Oil Co | 4051 | 028 | 1523 | 0639-03129 |
1995/09/29 | Oversize plates 1-5 (correlation of stratigraphic cross sections A-A - E-E, & plate 6 (3-D fence diagram), MW-20 pilot program, w/overlays (mapcase) | Dames & Moore | Shell Oil Co | 4052 | 028 | 2036 | 0639-03130 |
1995/09/29 | Response to comments fr EPA & DTSC re 9/29/95 draft rpt & workplan, lab data/analysis & hydraulic extraction workplan, MW-20 pilot prog, w/TL, 1/12/96 | Shell Oil Co | Environmental Protection Agency - Region 9 | 4053 | 028 | 2038 | 0639-03210 |
1995/10/00 | Article: Can environmental estrogens cause breast cancer? (Scientific American, 166-170 & 172) | Devra Davis / World Resources Insitute | - | 4054 | 028 | 2103 | 0639-02028 |
1995/10/00 | Ltr: Transmits Water table zone benzene concentrations map (1st quarter 1995), 9/27/95, w/map & TL to M Palmer fr J Dhont 10/17/95 | Jeffrey Dhont / Environmental Protection Agency - Region 9 | Michael Palmer / Hargis & Assoc, Inc | 4055 | 028 | 2110 | 0639-92223 |
1995/10/04 | Ltr: Transmits EPA review comments on NW corner soil SAP for former Montrose Chemical Plant, 6/8/95, w/attch | Jeffrey Dhont / Environmental Protection Agency - Region 9 | Frank Bachman / Montrose Chemical Corp | 4056 | 028 | 2115 | 0639-02198 |
1995/10/04 | Ltr: Followup to 10/2/95 phone conversation re capital improvement at Jones Chemicals | Timothy Gaffney / Jones Chemical Co | Gloria Conti / CA Environmental Protection Agency - Dept of Toxic Substances Control | 4057 | 028 | 2125 | 0639-92218 |
1995/10/04 | Ltr: Request for analyses of gw samples, w/table | Joe Nuzzolo / C H 2 M Hill | Janet Rosati / Environmental Protection Agency - Region 9 | 4058 | 028 | 2127 | 0639-92222 |
1995/10/04 | Memo: Request for analyses, quarterly gw monitoring program, w/table (analyses requested for split samples of gw) | Joe Nuzzolo / C H 2 M Hill | Janet Rosati / Environmental Protection Agency - Region 9 | 4059 | 028 | 2131 | 0639-93332 |
1995/10/10 | Ltr: Provides additional information re Well destruction workplan, LA County Flood Control District (LACFCD) well #795, w/attch | Michael Palmer / Hargis & Assoc, Inc | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4060 | 028 | 2135 | 0639-02189 |
1995/10/10 | ROC: Para-chlorobenzene sulfonic acid (p-CBSA) | Michelle Baron / Environmental Protection Agency - Region 9 | Jerry Jones | 4061 | 028 | 2149 | 0639-93377 |
1995/10/11 | Handouts fr phase 2 work session #2 mtg re gw contamination source areas, including summary of planned phase 2 investigations & drawings, w/marginalia | Dames & Moore | - | 4062 | 028 | 2155 | 0639-03530 |
1995/10/11 | Press Release EPA awards Superfund grant to Torrance group | Environmental Protection Agency - Region 9 | - | 4063 | 028 | 2167 | 0639-91772 |
1995/10/12 | Draft graphic depicting water table zone, benzene concentrations, w/notation stating graphic is for internal review | Dames & Moore | Environmental Protection Agency - Region 9 | 4064 | 028 | 2169 | 0639-03256 |
1995/10/12 | Mtg notes: Phase 2 work session #2, quarterly project mtg, w/agenda TL, handouts re gw contamination source areas & marginalia (phase 2 RI/FS) | Janet Rosati / Environmental Protection Agency - Region 9 | - | 4065 | 028 | 2172 | 0639-03389 |
1995/10/19 | Ltr: FSP & QAPP guidance, w/o attchs | Jeffrey Dhont / Environmental Protection Agency - Region 9 | John Heiser / McLaren Hart Environmental Engineering Corp | 4066 | 029 | 0001 | 0639-92217 |
1995/10/19 | Ltr: Transmits 2 guidances which EPA uses to determine the adequacy of field sampling plans (FSP) & quality assurance project plans (QAPP), w/o encls | Jeffrey Dhont / Environmental Protection Agency - Region 9 | John Dudley / Dames & Moore | 4067 | 029 | 0003 | 0639-93118 |
1995/10/20 | Ltr: 2nd information submission re well desturction workplan, well #795 | Michael Palmer / Hargis & Assoc, Inc | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4068 | 029 | 0005 | 0639-92280 |
1995/10/23 | Ltr: Approval to proceed with closure of LA County Flood Control District (LACFCD) well #795 | Jeffrey Dhont / Environmental Protection Agency - Region 9 | Frank Bachman / Montrose Chemical Corp | 4069 | 029 | 0008 | 0639-92307 |
1995/10/24 | Ltr: Transmits lab rpts & QA/QC documentation for level 2 shallow soil gas investigations conducted by Optimal, w/encls & marginalia (MW-20) | D Fates / Dames & Moore | Janet Rosati / Environmental Protection Agency - Region 9 | 4070 | 029 | 0011 | 0639-04767 |
1995/10/24 | Ltr: 3rd information submission re well destruction workplan, well #795 | Andrew Halliburton / Hargis & Assoc, Inc | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4071 | 029 | 0057 | 0639-92281 |
1995/10/24 | Ltr: 3rd information submission re well destruction workplan, well #795, w/TL | Andrew Halliburton / Hargis & Assoc, Inc | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4072 | 029 | 0060 | 0639-92282 |
1995/10/27 | Ltr: DTSC review of documents re well destruction workplan for LA County Flood Control District well #795 | Haissam Salloum / CA Environmental Protection Agency - Dept of Toxic Substances Control | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4073 | 029 | 0064 | 0639-92224 |
1995/10/27 | Ltr: Request for documents detailing site characterization at McDonnell Douglas facility, 19503 S Normandie | Haissam Salloum / CA Environmental Protection Agency - Dept of Toxic Substances Control | Scott Lattimore / Douglas Aircraft Co | 4074 | 029 | 0066 | 0639-92225 |
1995/10/30 | FSP & QAPP amendment for additional gw monitoring, w/TL to J Dhont fr D Hargis & M Palmer | Hargis & Assoc, Inc | Environmental Protection Agency - Region 9 | 4075 | 029 | 0069 | 0639-02152 |
1995/10/31 | Mtg agenda (proposed): EOP Group mtg 10/31/95, EPA, Del Amo respondents (lobbyists for Dow) | E O P Group | - | 4076 | 029 | 0441 | 0639-94130 |
1995/11/00 | Review of FSP & QAPP amendment for additional gw monitoring, 10/30/95, w/TL to J Dhont fr H Nezafati 11/8/95 | C H 2 M Hill | - | 4077 | 029 | 0443 | 0639-94482 |
1995/11/02 | Ltr: David Hargis designated project coordinator, w/env | Barry Shotts / Latham & Watkins (Attorneys) | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4078 | 029 | 0446 | 0639-92258 |
1995/11/02 | Summary of additional proposed locations, w/TL to J Rosati fr A Austin (phase 2 RI) | C H 2 M Hill | Environmental Protection Agency - Region 9 | 4079 | 029 | 0449 | 0639-94211 |
1995/11/07 | Mtg summary - between EPA, Del Amo respondents, EOP Group, 10/31/95, w/marginalia (lobbyists for Dow) | E O P Group | - | 4080 | 029 | 0455 | 0639-04772 |
1995/11/07 | Ltr: Respondents propose to include additional figures in future quarterly gw monitoring rpts, w/1st quarter 1995 gw elevation & benzene maps | Chuck Paine / Shell Oil Co | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4081 | 029 | 0462 | 0639-93083 |
1995/11/07 | News item - J Dhont conference call with Dames & Moore (phase 2 RI) | Jeffrey Dhont / Environmental Protection Agency - Region 9 | - | 4082 | 029 | 0469 | 0639-94567 |
1995/11/08 | Ltr: Discusses & transmits summ tables of reported & maximized analytical results for surface soil samples fr undeveloped areas, w/attchs (phase 1 RI) | Chuck Paine / Shell Oil Co | Janet Rosati / Environmental Protection Agency - Region 9 | 4083 | 029 | 0473 | 0639-04889 |
1995/11/08 | Fig #3 (gw elevations - middle Bellflower aquitard B sand) & fig #4 (gw elevations middle Bellflower aquitard C sand), w/fax TL to J Dhont fr A Barnes | Dames & Moore | Environmental Protection Agency - Region 9 | 4084 | 029 | 0486 | 0639-93084 |
1995/11/10 | Memo: Review comments on 9/29/95 draft submittal lab data analysis revised conceptual hydrostratigraphic model & proposed extraction workplan MW-20 | Terry Foreman / C H 2 M Hill | Cynthia Wetmore / Environmental Protection Agency - Region 9 | 4085 | 029 | 0492 | 0639-03131 |
1995/11/14 | Mtg agenda: Health risk assessment, waste pit area, w/sign-in sheet | Environmental Protection Agency - Region 9 | - | 4086 | 029 | 0499 | 0639-94225 |
1995/11/17 | Phase 2 RI, gw contamination source areas, data summary & proposed target areas, Del Amo study area | Dames & Moore | Shell Oil Co | 4087 | 029 | 0501 | 0639-03188 |
1995/11/17 | Ltr: Transmits 2 tables fr Montrose sampling plan for additional gw sampling & docs re closure of Jones well #795, w/o attchs | Jeffrey Dhont / Environmental Protection Agency - Region 9 | John Dudley / Dames & Moore | 4088 | 029 | 0645 | 0639-92207 |
1995/11/20 | Contour maps: Depict mean benzene/ethylbenzene concentrations in water table, mid Bellflower B&C-sand, upper Bellflower aquitard & gage aquifer, draft | Dames & Moore | - | 4089 | 029 | 0647 | 0639-02224 |
1995/11/20 | Memo: Review of rpt & workplan MW-20 pilot program (#94-R09-006), w/rtg slip | Steven Acree / Environmental Protection Agency - Region 6 | Cynthia Wetmore / Environmental Protection Agency - Region 9 | 4090 | 029 | 0668 | 0639-03132 |
1995/11/20 | Ltr: EPA contingent approval for FSP & QAPP amendment for additional gw monitoring | Jeffrey Dhont / Environmental Protection Agency - Region 9 | Frank Bachman / Montrose Chemical Corp | 4091 | 029 | 0675 | 0639-92226 |
1995/11/20 | Ltr: Minutes fr Del Amo mtg on 10/31/95 | Nancy Lindsay / Environmental Protection Agency - Region 9 | Michael O'Bannon / E O P Group | 4092 | 029 | 0678 | 0639-93085 |
1995/11/20 | Memo: Review of soil gas sampling & analytical procedures, Del Amo study area rpts (draft) | Mark Petersen / Environmental Protection Agency - Region 9 | Janet Rosati / Environmental Protection Agency - Region 9 | 4093 | 029 | 0681 | 0639-94224 |
1995/11/21 | Memo: Transmits preliminary (draft) data for monitoring well SWL0049, w/encl (faxed) | Andrew Barnes / Dames & Moore | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4094 | 029 | 0684 | 0639-92347 |
1995/11/22 | Memos: Field oversight of phase 2 field work, drilling of exploratory soil borings & installation of wells, conducted 8/95-11/95, w/attchs & TLs | Natasha Raykhman / C H 2 M Hill | Udai Singh / C H 2 M Hill | 4095 | 029 | 0688 | 0639-03160 |
1995/11/22 | News item - review notes for source areas at site, w/D Rodriguez notes on source areas at Del Amo & marginalia (phase 2 RI) | Jeffrey Dhont / Environmental Protection Agency - Region 9 | - | 4096 | 029 | 0781 | 0639-04881 |
1995/11/22 | Mtg agenda (draft): Phase 2 RI work session #3, 11/28/95, w/fax TLs fr J Dudley | John Dudley / Dames & Moore | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4097 | 029 | 0792 | 0639-93086 |
1995/11/29 | Memo: Review of rpt & workplan, MW-20 pilot program (#94-R09-006), w/rtg slip | Steven Acree / Environmental Protection Agency - Region 6 | Cynthia Wetmore / Environmental Protection Agency - Region 9 | 4098 | 029 | 0796 | 0639-03133 |
1995/11/29 | Memo: Request to review 1st quarter 1995 gw monitoring rpt, examine MW-20 treatability study rpt & field oversight of gw sampling | Jeffrey Dhont / Environmental Protection Agency - Region 9 | Hooshang Nezafati / C H 2 M Hill | 4099 | 029 | 0802 | 0639-92298 |
1995/11/29 | Memo: Transmits prelim unvalidated VOC results re interim phase 2 monitoring wells U-5 & B-5, installed at New Hampshire Ave & Milton St, w/encl (fax) | Gib Fates / Dames & Moore | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4100 | 029 | 0804 | 0639-93087 |
1995/11/30 | TL: Dense non-aqueous phase liquid (DNAPL) white paper, w/marginalia | Michael Shook / Lockheed Martin Corp | Richard Russell / Environmental Protection Agency - Region 9 | 4101 | 029 | 0810 | 0639-93554 |
1995/12/00 | Data assessment validation package, 10/95-12/95 sampling | Hargis & Assoc, Inc | - | 4102 | 029 | 0812 | 0639-03947 |
1995/12/00 | Diagram: Conceptual draft re treatability test for hydraulic extraction | Jeffrey Dhont / Environmental Protection Agency - Region 9 | - | 4103 | 029 | 0862 | 0639-93098 |
1995/12/01 | Memo: Field oversight re collection of gw samples, w/attchs & TL to J Dhont fr H Nezafati 12/8/95 | Boumediene HadjKaddour / C H 2 M Hill | Hooshang Nezafati / C H 2 M Hill | 4104 | 029 | 0864 | 0639-02199 |
1995/12/01 | Ltr: Info package addressing evaluation of NAPL dissolution, & transmits 6/28/93 addendum, draft MW-20 NAPL treatability study evaluation rpt, w/rpt | Chuck Paine / Shell Oil Co | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4105 | 029 | 0874 | 0639-03220 |
1995/12/01 | Information package re evaluation of 1993 NAPL dissolution, MW-20 area, w/TL to J Dhont & J Rosati fr C Paine | - | - | 4106 | 029 | 0994 | 0639-03439 |
1995/12/04 | Ltr: Review & comments re 9/29/95 draft rpt & workplan, lab data & analysis & hydraulic extraction workplan MW-20 pilot program | Haissam Salloum / CA Environmental Protection Agency - Dept of Toxic Substances Control | Cynthia Wetmore / Environmental Protection Agency - Region 9 | 4107 | 029 | 1114 | 0639-93088 |
1995/12/04 | News item - J Dhont notes about quarterly mtg, w/marginalia (phase 2 RI) | Jeffrey Dhont / Environmental Protection Agency - Region 9 | - | 4108 | 029 | 1119 | 0639-94558 |
1995/12/04 | News item - J Dhont conversation with Dames & Moore (phase 2 RI) | Jeffrey Dhont / Environmental Protection Agency - Region 9 | - | 4109 | 029 | 1122 | 0639-94559 |
1995/12/05 | Ltr: Transmits comments on draft rpt & workplan, lab data & analysis & hydraulic workplan, Del Amo study area, w/comments | Cynthia Wetmore / Environmental Protection Agency - Region 9 | Chuck Paine / Shell Oil Co | 4110 | 029 | 1125 | 0639-03134 |
1995/12/06 | Oversize maps (4): Sampling locations & well locations - Del Amo Blvd, 22 in x 34 in, scale not given (mapcase) | - | - | 4111 | 029 | 1136 | 0639-04848 |
1995/12/06 | Memo: Montrose NAPL removal estimate | Jim Hartley / C H 2 M Hill | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4112 | 029 | 1138 | 0639-94077 |
1995/12/07 | Montrose/Del Amo briefing - gw remedial & administrative options, or light at the end of the tunnel? | Jeffrey Dhont / Environmental Protection Agency - Region 9 | - | 4113 | 029 | 1141 | 0639-02221 |
1995/12/07 | Ltr: Transmits prelim unvalidated data for samples collected during 3rd quarter 1995 sampling event, gw monitoring wells installed 8/95-11/95, w/encl | John Dudley / Dames & Moore | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4114 | 029 | 1171 | 0639-03222 |
1995/12/07 | Ltr: Summary of action items & understandings reached during phase 2 RI work session #3, quarterly project mtg, on 11/28/95, w/attchs (phase 2 RI/FS) | Chuck Paine / Shell Oil Co | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4115 | 029 | 1181 | 0639-93089 |
1995/12/07 | Figure 1-6, distribution of vapor phase VOCs in shallow soils, pit site (draft) | Dames & Moore | - | 4116 | 029 | 1187 | 0639-93349 |
1995/12/08 | Memo: Mtg notes for 12/7/95 quarterly project mtg with PRPs re Del Amo waste pits, w/TL header to J Dhont fr R Haimann (FFS) | Richard Haimann / C H 2 M Hill | - | 4117 | 029 | 1189 | 0639-94078 |
1995/12/08 | Memo: Montrose NAPL removal estimate | Hooshang Nezafati / C H 2 M Hill | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4118 | 029 | 1194 | 0639-94079 |
1995/12/08 | Memo: Montrose NAPL removal estimate | Jim Hartley / C H 2 M Hill | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4119 | 029 | 1197 | 0639-94080 |
1995/12/08 | Memo: Mtg notes for 12/7/95 quarterly project mtg with PRPs re Del Amo waste pits (FFS) | Richard Haimann / C H 2 M Hill | - | 4120 | 029 | 1201 | 0639-94207 |
1995/12/08 | Table of flux chamber modeling options, baseline health risk assessment, waste pit area, w/marginalia | Dames & Moore | - | 4121 | 029 | 1205 | 0639-94306 |
1995/12/10 | Handwritten notes: Risk assessment, waste pits | Janet Rosati / Environmental Protection Agency - Region 9 | - | 4122 | 029 | 1207 | 0639-94307 |
1995/12/11 | Oversize maps (15): Shallow soil gas sampling conditions & concentrations, Del Amo study area, height & width varies, scale varies (mapcase) | Dames & Moore | Shell Oil Co | 4123 | 029 | 1209 | 0639-04847 |
1995/12/12 | Technical memo: Results of shallow soil gas sampling pipeline & trench transmission system, Del Amo study area, w/TL 12/12/95 to J Rosati fr C Paine | Dames & Moore | Shell Oil Co | 4124 | 029 | 1211 | 0639-03187 |
1995/12/14 | Memo: Review comments re 1st 95 quarterly gw monitoring rpt, Del Amo, w/TL header | Peter Mock / C H 2 M Hill | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4125 | 029 | 1243 | 0639-94081 |
1995/12/15 | Data validation rpt: SAS #24091, memo #1, 18 water samples for VOAs & 14 water samples for BNAs, collected 10/16-23/95, w/TL to J Rosati fr M Weiner | Barbara Gordon / I C F Kaiser Engineers, Inc | Environmental Protection Agency - Region 9 | 4126 | 029 | 1246 | 0639-02226 |
1995/12/19 | News item - J Dhont notes on mtgs with Dames & Moore 12/13/95-12/14/95 re QC, additional samples (phase 2 RI) | Jeffrey Dhont / Environmental Protection Agency - Region 9 | - | 4127 | 029 | 1292 | 0639-94560 |
1995/12/20 | Memo: Requests & reconfirms technical support fr Kerr Lab for Montrose & Del Amo projects, w/visual schematics used for briefings | Jeffrey Dhont / Environmental Protection Agency - Region 9 | Don Draper / Environmental Protection Agency - Robert S Kerr Environmental Research Laboratory | 4128 | 029 | 1297 | 0639-02222 |
1995/12/20 | Data validation rpt: SAS #24091, memo #2, 3 volatile & 2 semivolatile water samples, collected 10/24/95, w/TL to J Rosati fr M Weiner | Mitzi Dooley / I C F Kaiser Engineers, Inc | Environmental Protection Agency - Region 9 | 4129 | 029 | 1318 | 0639-02227 |
1995/12/26 | Memo: Requests & reconfirms technical assistance fr Kerr Lab for Del Amo & Montrose sites | Jeffrey Dhont / Environmental Protection Agency - Region 9 | Don Draper / Environmental Protection Agency - Robert S Kerr Environmental Research Laboratory | 4130 | 029 | 1337 | 0639-94082 |
1995/12/29 | Summary of available information re lot 37 & pit 1-A, w/attchs & TL to J Rosati fr D Laney (phase 1 RI) | Dames & Moore | - | 4131 | 029 | 1341 | 0639-04887 |
1996/00/00 | Article: Field eval of granular activated carbon fluid-bed bioreactor for treatment of chlorobenzene in gw (Environmental Progress, v15, #2), w/fax TL | G Klecka / Dow Chemical Co | - | 4132 | 029 | 1414 | 0639-02214 |
1996/00/00 | Figures 1-16 - chlorobenzene concentrations (draft), w/marginalia (joint gw model) | Hargis & Assoc, Inc | - | 4133 | 029 | 1431 | 0639-02223 |
1996/00/00 | Article: Field evaluation of granular activated carbon fluid-bed bioreactor for treatment of chlorobenzene in gw, w/fax TL 7/16/96, (joint gw model) | G Klecka / Environmental Progress (Publication) | - | 4134 | 029 | 1448 | 0639-03262 |
1996/00/00 | Maps (5): Chlorobenzene water table, Bellflower C-Sand, Gage & Lynwood & p-CBSA Lynwood (drafts) (joint gw model) | Hargis & Assoc, Inc | - | 4135 | 029 | 1465 | 0639-03390 |
1996/00/00 | Cross-sections - distribution, physical testing data, interpretive generalized stratigraphy & analytical results for pit site investigation | Dames & Moore | - | 4136 | 029 | 1476 | 0639-03539 |
1996/00/00 | Interpretive benzene distribution in soil, pit site investigation, w/table 2-2, air permeability of waste | Dames & Moore | - | 4137 | 029 | 1501 | 0639-03540 |
1996/00/00 | Figures (27) - benzene & plume reduction concentrations, w/marginalia (joint gw model) | Dames & Moore | - | 4138 | 029 | 1511 | 0639-03559 |
1996/00/00 | Tables & test summaries used in development of gw model, w/marginalia | - | - | 4139 | 029 | 1539 | 0639-03914 |
1996/00/00 | Overheads for Waste Pits Alternatives re 1996 proposed plan | Dames & Moore | - | 4140 | 029 | 1553 | 0639-04768 |
1996/00/00 | VLEACH modeling re Del Amo Waste Pits FS (various docs) | Dames & Moore | - | 4141 | 029 | 1582 | 0639-04769 |
1996/00/00 | Overheads & handouts of remedial alternatives re focused FS (FFS) | Environmental Protection Agency | - | 4142 | 029 | 1711 | 0639-04771 |
1996/00/00 | Table of generalized modeling scenarios (revised version), w/definition of symbols & scenarios & TL fr J Dhont (joint gw model) | Environmental Protection Agency - Region 9 | - | 4143 | 029 | 1719 | 0639-92324 |
1996/00/00 | Gw modeling - proposed sequence of remedial scenario group simulations (draft) | Hargis & Assoc, Inc | - | 4144 | 029 | 1723 | 0639-93300 |
1996/01/00 | Language for operational history section of RI rpt (redline/strikeout draft) | Jeffrey Dhont / Environmental Protection Agency - Region 9 | - | 4145 | 029 | 1725 | 0639-03327 |
1996/01/00 | Overheads - preliminary gw containment & zone of influence contours, w/photocopies | Hargis & Assoc, Inc | - | 4146 | 029 | 1741 | 0639-03584 |
1996/01/00 | Language for operational history section of RI rpt (original rewrite) | Jeffrey Dhont / Environmental Protection Agency - Region 9 | - | 4147 | 029 | 1764 | 0639-03635 |
1996/01/02 | Ltr: Summary of agreement re gw monitoring rpt format | Chuck Paine / Shell Oil Co | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4148 | 029 | 1780 | 0639-93090 |
1996/01/09 | Memo: Notification of conference call on 4/11/96 to discuss focused transport calibration exercise (benzene), & other modeling-related deliverables | John Dudley / Dames & Moore | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4149 | 029 | 1783 | 0639-92356 |
1996/01/09 | Revised methodology for baseline health risk assessment, waste pit area, w/marginalia | - | - | 4150 | 029 | 1785 | 0639-94515 |
1996/01/10 | Memo: Response to QAMS comments re Del Amo soil gas data | Jeffrey Dhont / Environmental Protection Agency - Region 9 | Mark Petersen / Environmental Protection Agency - Region 9 | 4151 | 029 | 1787 | 0639-94083 |
1996/01/11 | Ltr: Transmits 1/11/96 tech memo, short-term pumping tests data collection & interpretation procedures, w/tech memo | Chuck Paine / Shell Oil Co | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4152 | 029 | 1790 | 0639-03209 |
1996/01/12 | Ltr: Response to Respondents 12/7/95 ltr to EPA re summary of action items & understandings reached during Del Amo phase 2 RI work session #3 | Jeffrey Dhont / Environmental Protection Agency - Region 9 | Chuck Paine / Shell Oil Co | 4153 | 029 | 1802 | 0639-93091 |
1996/01/12 | Memo: Summary of 12/13/95 mtg re phase 2 soil gas sampling & analytical procedures, Del Amo study area (phase 2 RI) | Mark Petersen / Environmental Protection Agency - Region 9 | Janet Rosati / Environmental Protection Agency - Region 9 | 4154 | 029 | 1808 | 0639-93092 |
1996/01/15 | Amended 12/14/95 analytical rpt for chemical testing of 12/2/95 samples, w/analysis request forms & TL to Netto fr B Moore | B C Analytical | - | 4155 | 029 | 1814 | 0639-03407 |
1996/01/17 | Ltr: Transmits gw sampling data submittal, 10/95-12/95, w/attch | David Hargis / Hargis & Assoc, Inc | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4156 | 029 | 1847 | 0639-02153 |
1996/01/17 | Memo: Transmits info on short-term/wellbore storage effects on time-drawdown data, w/encls (faxed) | Tom Vinckier / Dames & Moore | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4157 | 029 | 2133 | 0639-93093 |
1996/01/17 | Memo: Site contamination highlights re releases of hazardous waste - soil, gw, DNAPL | Hooshang Nezafati / C H 2 M Hill | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4158 | 029 | 2139 | 0639-94178 |
1996/01/22 | ROCs: AREA-ST model (waste pits risk assessment), 1/6/96 & 1/22/96, w/TL to J Rosati & S Smucker fr D Kringel, 3/6/96 | Danny Kringel / Dames & Moore | Russ Lee / Environmental Protection Agency - Research Triangle Park | 4159 | 029 | 2142 | 0639-94308 |
1996/01/25 | Ltr: Summary of well destruction activities re LA County Flood Control District (LACFCD) well #795, w/attchs | Michael Palmer / Hargis & Assoc, Inc | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4160 | 029 | 2146 | 0639-02166 |
1996/01/25 | Memo: Transmits partially reviewed data, w/analytical results (unvalidated data), case #R95S68, level water samples for volatiles | Dawn Conley / Environmental Protection Agency - Region 9 | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4161 | 029 | 2194 | 0639-92336 |
1996/01/25 | Memo: Transmits Del Amo progress notes - conference call agenda, w/attch (lobbyists for Dow) | Michael O'Bannon / E O P Group | Nancy Lindsay / Environmental Protection Agency - Region 9 | 4162 | 029 | 2199 | 0639-93094 |
1996/01/25 | Memo: Transmits Del Amo progress notes - conference call agenda, w/attch & marginalia (lobbyists for Dow) | Michael O'Bannon / E O P Group | Nancy Lindsay / Environmental Protection Agency - Region 9 | 4163 | 029 | 2203 | 0639-94369 |
1996/01/29 | Ltr: Transmits EPA comments on Draft RI, 10/29/92, w/attch | Jeff Dhont / Environmental Protection Agency - Region 9 | Frank Bachman / Montrose Chemical Corp | 4164 | 029 | 2207 | 0639-02261 |
1996/01/29 | Memo: Transmits partially reviewed data, w/analytical results (unvalidated data), case #R96S06, low level water samples for volatiles | Dawn Conley / Environmental Protection Agency - Region 9 | Janet Rosati / Environmental Protection Agency - Region 9 | 4165 | 029 | 2254 | 0639-92337 |
1996/01/30 | Memo: Request for status table re outstanding split sampling data | Jeffrey Dhont / Environmental Protection Agency - Region 9 | Hooshang Nezafati / C H 2 M Hill | 4166 | 029 | 2258 | 0639-92299 |
1996/01/30 | Memo: Review comments & recommendations for Del Amo pumping test, well 46 | Hooshang Nezafati / C H 2 M Hill | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4167 | 029 | 2260 | 0639-94084 |
1996/01/31 | Tables 1A, 1B & 2 re VLEACH input files, assumptions & parameters, w/marginalia & TL to J Rosati fr D Laney | Dames & Moore | - | 4168 | 029 | 2264 | 0639-03532 |
1996/01/31 | Memo: Review comments & recommendations - Del Amo pumping test, well 46 | Hooshang Nezafati / C H 2 M Hill | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4169 | 029 | 2291 | 0639-93100 |
1996/01/31 | Proposed methodology for baseline health risk assessment, lot 37 (pit 1-A) (draft), w/marginalia | Dames & Moore | - | 4170 | 029 | 2295 | 0639-94516 |
1996/02/00 | Environmental impact rpt (EIR), Del Amo Blvd overcrossing at Route 405 - traffic rpt | H N T B Corp | City of Carson | 4171 | 029 | 2298 | 0639-03695 |
1996/02/00 | VLEACH modeling methodology, w/marginalia | Dames & Moore | - | 4172 | 030 | 0001 | 0639-93348 |
1996/02/02 | Tables 1A (revised version) & 1C re VLEACH input files, assumptions & parameters, w/TLs to J Rosati & J Dhont fr D Laney | Dames & Moore | - | 4173 | 030 | 0004 | 0639-03533 |
1996/02/05 | Ltr: "Short-term" (2-hour) aquifer tests proposed by Dames & Moore for estimates of transmissivity in water-bearing units at Del Amo study area | Jeffrey Dhont / Environmental Protection Agency - Region 9 | Chuck Paine / Shell Oil Co | 4174 | 030 | 0011 | 0639-03212 |
1996/02/05 | TL: Ltr on pump tests | Jeffrey Dhont / Environmental Protection Agency - Region 9 | Chuck Paine / Shell Oil Co | 4175 | 030 | 0019 | 0639-93124 |
1996/02/05 | TL: Ltr on pump tests | Jeffrey Dhont / Environmental Protection Agency - Region 9 | John Dudley / Dames & Moore | 4176 | 030 | 0021 | 0639-93126 |
1996/02/06 | Data validation rpt: SAS #R96S06, 5 water samples, collected 10/17/95 & 10/19/95, w/TL to J Rosati fr D Conley | Dawn Conley / Environmental Protection Agency - Region 9 | Janet Rosati / Environmental Protection Agency - Region 9 | 4177 | 030 | 0023 | 0639-02265 |
1996/02/06 | Data validation rpt: SAS #R96S06, 5 water samples, collected 10/17/95 & 10/19/95, w/TL to J Rosati fr D Conley | Dawn Conley / Environmental Protection Agency - Region 9 | - | 4178 | 030 | 0038 | 0639-03264 |
1996/02/07 | Ltr: Discussion of negotiations re RI & waste pits risk assessment (lobbyists for Dow) | Nancy Lindsay / Environmental Protection Agency - Region 9 | Michael O'Bannon / E O P Group | 4179 | 030 | 0053 | 0639-94128 |
1996/02/10 | Gw remedy overheads | Jeffrey Dhont / Environmental Protection Agency - Region 9 | - | 4180 | 030 | 0056 | 0639-03422 |
1996/02/12 | Risk-based screening levels (RBSLs) for individual compounds in soils - leaching to gw, w/spreadsheet, schematic & TL to J Dhont fr J Gustafson | Shell Development Co | - | 4181 | 030 | 0112 | 0639-03534 |
1996/02/15 | Memo: Del Amo clinic data, w/Del Amo/Montrose community, 1/95-1/96, environmental medicine clinic activities, # of new residents seen & p,p'-DDE serum | William Nelson / US Dept of Health & Human Services - Agency for Toxic Substances & Disease Registry | Keith Takata / Environmental Protection Agency - Region 9 | 4182 | 030 | 0121 | 0639-92341 |
1996/02/16 | Technical memo: 1/10/96 Del Amo field oversight, petrophysical core collection at MW-20 study area | Hooshang Nezafati / C H 2 M Hill | Janet Rosati / Environmental Protection Agency - Region 9 | 4183 | 030 | 0126 | 0639-03524 |
1996/02/16 | Per 2/12/96 VLEACH conference call request, backup documentation for values in table 2 of 1/31/96 ltr, w/marginalia & TL to J Rosati fr D Laney | Dames & Moore | - | 4184 | 030 | 0129 | 0639-03536 |
1996/02/16 | Memo: Field oversight observation of well #795 abandonment activities performed by Hargis 12/7-12/13/95 | Hooshang Nezafati / C H 2 M Hill | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4185 | 030 | 0137 | 0639-92227 |
1996/02/19 | Memo: Field oversight, collection of gw split samples, for period 1/31/96-2/14/96, w/site inspection forms & TLs to J Rosati & J Dhont | Hooshang Nezafati / C H 2 M Hill | Janet Rosati / Environmental Protection Agency - Region 9 | 4186 | 030 | 0140 | 0639-03162 |
1996/02/20 | Action items fr 2/20/96 VLEACH conference call, w/marginalia & TL to J Rosati fr D Laney | Dames & Moore | - | 4187 | 030 | 0164 | 0639-93347 |
1996/02/21 | Ltr: Transmits ATSDR health consultation re house dust sampling of 5/95, dated 12/95, w/attch | William Nelson / US Dept of Health & Human Services - Agency for Toxic Substances & Disease Registry | John Blevins / Environmental Protection Agency - Region 9 | 4188 | 030 | 0167 | 0639-02191 |
1996/02/21 | Ltr: Transmits aerial photos of Montrose site & environs, & oblique photos of Montrose & Del Amo sites & environs, w/o attchs | Jeffrey Dhont / Environmental Protection Agency - Region 9 | Karl Lytz / Latham & Watkins (Attorneys) | 4189 | 030 | 0180 | 0639-92257 |
1996/02/23 | Gw monitoring rpt, 3rd sampling period 1995, Del Amo, w/TL 2/23/96 to J Dhont fr C Paine | Dames & Moore | Shell Oil Co | 4190 | 030 | 0182 | 0639-03178 |
1996/02/23 | Memo: Request for information re outstanding data fr QAMS & request for discussion re comparing PRP data with EPA split sample data | Jeffrey Dhont / Environmental Protection Agency - Region 9 | Hooshang Nezafati / C H 2 M Hill | 4191 | 030 | 0812 | 0639-92300 |
1996/02/23 | Memo: Del Amo Superfund site - response to comments on rpt & workplan, MW-20 pilot program | Steven Acree / Environmental Protection Agency - National Risk Management Research Laboratory | Cynthia Wetmore / Environmental Protection Agency - Region 9 | 4192 | 030 | 0814 | 0639-92966 |
1996/02/27 | Ltr: Response to EPA comments on NW corner sampling proposal, w/marginalia | Margaret Eggers / McLaren Hart Environmental Engineering Corp | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4193 | 030 | 0818 | 0639-92271 |
1996/02/28 | Technical memo: Analysis of gw flow & mass transport, Del Amo study area | Dames & Moore | Shell Oil Co | 4194 | 030 | 0824 | 0639-03211 |
1996/02/28 | List of participants - 2/28/96 mtg | Environmental Protection Agency - Region 9 | - | 4195 | 030 | 0860 | 0639-92342 |
1996/03/00 | Disc with ASCII text file containing gw chemical & water level data through 12/95, w/TL to J Dhont fr J Layton 3/27/95 | Hargis & Assoc, Inc | - | 4196 | 030 | 0862 | 0639-02275 |
1996/03/00 | EIR, Del Amo Blvd overcrossing at I-405 - air quality analysis rpt | Terry A Hayes Assoc | City of Carson | 4197 | 030 | 0865 | 0639-03700 |
1996/03/00 | Notes on source areas at Del Amo - includes info re Trico, Amoco, RR Donnelley, Coca Cola, Tri-lite, Obie, Ace Clearwater, Toyota, Ferro & WRC bldgs | Jeffrey Dhont / Environmental Protection Agency - Region 9 | - | 4198 | 030 | 0924 | 0639-93081 |
1996/03/00 | S Smucker preliminary comments on risk assessment for conference call discussion, w/marginalia | Environmental Protection Agency - Region 9 | - | 4199 | 030 | 0930 | 0639-94517 |
1996/03/01 | Data summary package w/TLs (3/1/96 & 5/19/97) | Dames & Moore | - | 4200 | 030 | 0932 | 0639-04797 |
1996/03/04 | Tables re screening of COCs for VLEACH modeling, w/TL to J Dhont fr D Laney | Dames & Moore | - | 4201 | 030 | 0941 | 0639-03537 |
1996/03/04 | Memo: Response to comments on rpt & workplan, MW-20 pilot program, (faxed) | Natasha Raykman / C H 2 M Hill | Cynthia Wetmore / Environmental Protection Agency - Region 9 | 4202 | 030 | 0948 | 0639-92964 |
1996/03/08 | Ltr: Informal submittal for discussion purposes - preliminary recovery analysis on 6 12-hour pump tests, w/attchs (draft) | John Dudley / Dames & Moore | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4203 | 030 | 0951 | 0639-03229 |
1996/03/11 | Data validation rpt: Case #R96S07, RAP volatiles for 5 water samples, collected 11/29-11/30/95, w/TL to Dhont fr Conley & TL to Nezafati fr Dhont 4/1 | Dawn Conley / Environmental Protection Agency - Region 9 | - | 4204 | 030 | 0963 | 0639-02154 |
1996/03/11 | Ltr: Response to 2/27/96 ltr re developing sampling plan for additional NW corner soil sampling | Jeffrey Dhont / Environmental Protection Agency - Region 9 | Frank Bachman / Montrose Chemical Corp | 4205 | 030 | 0986 | 0639-92308 |
1996/03/11 | Ltr: Determination of irrrelevance & rejection of method & conclusions re 2/28/96 technical memo - analysis of gw flow & mass transport | Jeffrey Dhont / Environmental Protection Agency - Region 9 | Chuck Paine / Shell Oil Co | 4206 | 030 | 0992 | 0639-93095 |
1996/03/12 | Memo: Review of informal submittal for discussion purposes, preliminary analyses on 6 12-hr pumping tests, Del Amo study area | Hooshang Nezafati / C H 2 M Hill | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4207 | 030 | 0998 | 0639-94085 |
1996/03/14 | Ltr: Proposed modification of gw monitoring program, w/encls (proposed sampling schedule, 4 benzene concentration figs, & distribution list) | Chuck Paine / Shell Oil Co | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4208 | 030 | 1002 | 0639-03231 |
1996/03/14 | Ltr: EPA concurs with Respondents re pilot hydraulic extraction test, w/memo 2/23/96 re response to comments on rpt & workplan, MW-20 pilot program | Cynthia Wetmore / Environmental Protection Agency - Region 9 | Chuck Paine / Shell Oil Co | 4209 | 030 | 1022 | 0639-93184 |
1996/03/15 | Ltr: Transmits selected docs & info re Del Amo study area, w/o encls (joint gw model) | John Dudley / Dames & Moore | Steve Acree / Environmental Protection Agency - Region 6 | 4210 | 030 | 1028 | 0639-92325 |
1996/03/18 | Draft tech memo fr Montrose/Del Amo modeling group, conceptual workplan for joint modeling effort, w/TL to J Dhont fr C Paine (joint gw model) | Shell Oil Co | - | 4211 | 030 | 1030 | 0639-02267 |
1996/03/18 | Memo: Transmits info for 3/19/96 conference call re VLEACH, w/attchs | Dames & Moore | - | 4212 | 030 | 1043 | 0639-03538 |
1996/03/18 | Draft tech memo fr Montrose/Del Amo modeling group, conceptual workplan for joint modeling effort, w/marginalia & TL (used in development of gw model) | Shell Oil Co | - | 4213 | 030 | 1067 | 0639-03915 |
1996/03/19 | Memo: Transmits partially reviewed data for case #R96S07 for pesticides/PCBs, w/attch | Dawn Conley / Environmental Protection Agency - Region 9 | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4214 | 030 | 1080 | 0639-92228 |
1996/03/21 | Memo: Transmits excerpts fr draft RI rpt & floppy disc with database excerpts, w/o attchs | Greg Cranham / Hargis & Assoc, Inc | Steve Acree / Environmental Protection Agency - Robert S Kerr Environmental Research Laboratory | 4215 | 030 | 1083 | 0639-92260 |
1996/03/21 | Memo: Directions to Dames & Moore, w/map, agenda for 3/26/96 Montrose/Del Amo joint modeling mtg, distribution list, & fax TLs 3/21/96 | Dames & Moore | Environmental Protection Agency - Region 9 | 4216 | 030 | 1085 | 0639-92360 |
1996/03/21 | Memo: Transmits excerpts fr draft RI rpt & floppy disc with database excerpts, w/o attchs, w/TL to J Dhont | Greg Cranham / Hargis & Assoc, Inc | Steve Acree / Environmental Protection Agency - Robert S Kerr Environmental Research Laboratory | 4217 | 030 | 1092 | 0639-92373 |
1996/03/22 | Record of interviews of Jim Suhrer, Montrose Chemical plant production foreman, conducted 6/2/95 & 3/22/96,by S Simanonok, J Dhont & J Lyons | Jeffrey Dhont / Environmental Protection Agency - Region 9 | - | 4218 | 030 | 1095 | 0639-02177 |
1996/03/22 | Records of 6/2/95 interview & mtgs with J Suhrer, former Montrose plant foreman | Jeffrey Dhont / Environmental Protection Agency - Region 9 | - | 4219 | 030 | 1108 | 0639-03632 |
1996/03/22 | Mtg agenda: Hydraulic conductivity fields, Montrose/Del Amo hydrostratigraphic units, 3/28/96, w/marginalia & fax TL to J Dhont | Tom Vinckier / Dames & Moore | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4220 | 030 | 1173 | 0639-92355 |
1996/03/22 | Memo: Request for additional sections of final draft focused feasibility study (FFS) for review & comments | Ed Aul / Edward Aul & Assoc, Inc | Dave Laney / Dames & Moore | 4221 | 030 | 1177 | 0639-93143 |
1996/03/22 | Responses to preliminary comments fr S Smucker on baseline health risk assessment, waste pit area, w/attchs & marginalia | Dames & Moore | Environmental Protection Agency - Region 9 | 4222 | 030 | 1179 | 0639-94309 |
1996/03/25 | Ltr: Inspection of asphalt cap at site | John Heiser / McLaren Hart Environmental Engineering Corp | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4223 | 030 | 1183 | 0639-92309 |
1996/03/26 | Oversize maps (4): Del Amo study area drafts, 3/25/96-3/26/96, used in development of gw model, 1 in = 600 ft (see finding aid) | Dames & Moore | - | 4224 | 030 | 1185 | 0639-03807 |
1996/03/26 | Oversize drawings (5): Del Amo study area recovery data, figures 41U, 41X, 45, 47 & 50 (draft) - used in development of gw model | Dames & Moore | Shell Oil Co | 4225 | 030 | 1187 | 0639-03916 |
1996/03/26 | Additional responses to S Smucker preliminary comments on baseline health risk assessment, waste pit area, w/attchs & TL to J Rosati fr D Laney | Dames & Moore | Environmental Protection Agency - Region 9 | 4226 | 030 | 1198 | 0639-04890 |
1996/03/26 | Regional modeling mtg attendee list, w/handwritten note fr J Dhont re 3/18/96 conceptual workplan for joint Montrose/Del Amo modeling effort | Environmental Protection Agency - Region 9 | - | 4227 | 030 | 1226 | 0639-92354 |
1996/03/26 | Oversize drawings (4): Del Amo study area drawdown data, figures 42U, 42X, 44 & 46 (draft) - used in development of gw model | Dames & Moore | Shell Oil Co | 4228 | 030 | 1360 | 0639-94179 |
1996/03/26 | Oversize drawings (2): Del Amo study area, lower Bellflower & Gage-Lynwood aquitards, figures 48 & 49 (draft) - used in development of gw model | Dames & Moore | Shell Oil Co | 4229 | 030 | 1367 | 0639-94180 |
1996/03/27 | Oversize drawings (6): Location of vertical hydraulic conductivity samples, Del Amo study area, 1st quarter 1996 - used in development of gw model | Dames & Moore | Shell Oil Co | 4230 | 030 | 1372 | 0639-03917 |
1996/03/27 | Mtg agenda (proposed): MW-20 modeling mtg | Environmental Protection Agency - Region 9 | - | 4231 | 030 | 1385 | 0639-92353 |
1996/04/00 | Fact sheet: Workshop announcement - waste pits risk assessment (in English & Spanish) | Environmental Protection Agency - Region 9 | - | 4232 | 030 | 1387 | 0639-93329 |
1996/04/02 | Agenda items for mtg with EPA re Del Amo Respondents, w/draft schedule for gw remedy modeling discussions, faxed (joint gw model) | Michael O'Bunnon / E O P Group | Nancy Lindsay / Environmental Protection Agency - Region 9 | 4233 | 030 | 1390 | 0639-92334 |
1996/04/05 | Ltr: Focused transport calibration for benzene sources, w/schedule, 3/26/96 flow/transport model mtg summary & pits/Hamilton Dutch map, joint gw model | John Dudley / Dames & Moore | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4234 | 030 | 1393 | 0639-92328 |
1996/04/08 | Data validation rpt: Case #R96S26, RAP semi-volatiles for 3 water samples, collected 2/7-2/13/96, w/TL to J Dhont fr D Richmond | Dawn Richmond / Environmental Protection Agency - Region 9 | - | 4235 | 030 | 1400 | 0639-02155 |
1996/04/08 | Memo: Transmits draft summary table of proposed sampling schedule & rationale for conference call re modificatin to gw monitoring plan, w/encl (faxed) | Hooshang Nezafati / C H 2 M Hill | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4236 | 030 | 1412 | 0639-03492 |
1996/04/08 | Memo: Status of split sampling analytical data & LOE estimate for comparison, w/TL | Hooshang Nezafati / C H 2 M Hill | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4237 | 030 | 1422 | 0639-92229 |
1996/04/08 | Memo: Dames & Moore will send modeling & data info, 4/16/96 mtg | Jeffrey Dhont / Environmental Protection Agency - Region 9 | Steve Acree / Environmental Protection Agency - Robert S Kerr Environmental Research Laboratory | 4238 | 030 | 1426 | 0639-94086 |
1996/04/09 | 12 draft figs - vertical/horizontal hydraulic conductivity of upper/lower/middle Bellflower Aquitard, B&C-Sand & Mud, & Gage Aquifer (joint gw model) | Dames & Moore | - | 4239 | 030 | 1428 | 0639-02218 |
1996/04/09 | Ltr: Transmits docs for comment, w/table of input parameters & revised table of lab hydraulic conductivity values, w/o draft maps (joint gw model) | John Dudley / Dames & Moore | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4240 | 030 | 1452 | 0639-92327 |
1996/04/09 | Memo: Comments re conceptual workplan for joint modeling effort (Montrose/Del Amo), w/rtg slip to J Dhont fr D Draper, 4/15/96 (joint gw model) | Steven Acree / Environmental Protection Agency - Region 6 | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4241 | 030 | 1458 | 0639-92329 |
1996/04/09 | Memo: Review & comments re Montrose & Del Amo conceptual workplan for joint modeling effort, w/fax TLs 4/10/96, (joint gw FS) | Steven Acree / Environmental Protection Agency - Region 6 | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4242 | 030 | 1463 | 0639-92369 |
1996/04/09 | Memo: Review & comments re Montrose & Del Amo conceptual workplan for joint modeling effort, w/fax TLs 4/10/96 (joint gw FS) | Steven Acree / Environmental Protection Agency - Region 6 | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4243 | 030 | 1469 | 0639-93341 |
1996/04/10 | Data validation rpt: Case #R96S26, RAP volatiles for 6 water samples, collected 1/31-2/1/96, w/TL to J Dhont fr D Richmond | Dawn Richmond / Environmental Protection Agency - Region 9 | - | 4244 | 030 | 1475 | 0639-02156 |
1996/04/10 | Ltr: EPA response to request by Respondents for modifications to gw monitoring program, w/table (proposals & revisions to gw monitoring program) | Jeffrey Dhont / Environmental Protection Agency - Region 9 | Chuck Paine / Shell Oil Co | 4245 | 030 | 1494 | 0639-03230 |
1996/04/10 | Memo: Expansion of model domain & selection of boundary conditions, w/plate (gw model domain) (joint gw model) | Ming Zhu / Dames & Moore | Andrew Barnes / Dames & Moore | 4246 | 030 | 1507 | 0639-92330 |
1996/04/11 | TL: 2/23/96 gw monitoring rpt, 3rd sampling period 1995, Del Amo study area | John Dudley / Dames & Moore | Steve Acree / Environmental Protection Agency - Region 6 | 4247 | 030 | 1511 | 0639-93127 |
1996/04/12 | Draft NW corner soil sampling & analysis plan (SAP), w/TL to J Dhont fr J Heiser | Frederick R McLaren Environmental Engineering | Environmental Protection Agency - Region 9 | 4248 | 030 | 1513 | 0639-02160 |
1996/04/12 | Draft conceptual joint gw remedy scenarios (joint gw model) | Jeffrey Dhont / Environmental Protection Agency - Region 9 | - | 4249 | 030 | 1546 | 0639-03497 |
1996/04/12 | Oversize drawings (3): Draft hydrogeologic cross sections, Del Amo study area, 1 in = 20 ft | Dames & Moore | - | 4250 | 030 | 1552 | 0639-03815 |
1996/04/12 | TL: Rev draft cross sections G-G', H-H' & K-K' & rev draft maps plotting distribution of hydraulic conductivity data - used in development of gw model | John Dudley / Dames & Moore | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4251 | 030 | 1556 | 0639-91605 |
1996/04/12 | Slide presentation (paper copies) - conceptual joint gw remedy process (draft) | Jeffrey Dhont / Environmental Protection Agency - Region 9 | - | 4252 | 030 | 1558 | 0639-92338 |
1996/04/12 | Map: Gw modeling - vertical hydraulic conductivity, upper Bellflower aquitard, Del Amo (draft) | Dames & Moore | - | 4253 | 030 | 1567 | 0639-93301 |
1996/04/15 | 15 draft figs - vertical/horizontal hydraulic conductivity - lower/mid/upper Bellflower Aquitard/B&C-Sand/Mud, & Gage/Lynwood aquifers (joint gw model | Dames & Moore | - | 4254 | 030 | 1570 | 0639-02219 |
1996/04/17 | Memo: Transmits revised figs 51058 & 61-68, re vertical & horizontal hydraulic conductivity by Hydrostratigraphic unit, w/o encl | John Dudley / Dames & Moore | Natasha Raykhman / C H 2 M Hill | 4255 | 030 | 1601 | 0639-93114 |
1996/04/19 | Memo: Request to review PRP documents - removal action workplan for JO"D" sewer cleanup (draft), 4/12/96, & NW corner soil SAP (draft), 4/12/96 | Jeffrey Dhont / Environmental Protection Agency - Region 9 | Hooshang Nezafati / C H 2 M Hill | 4256 | 030 | 1603 | 0639-92303 |
1996/04/22 | Technical memos: Del Amo oversight, drilling & well installation at MW-20 study area, conducted 4/11/96 & 4/17/96 | Hooshang Nezafati / C H 2 M Hill | Janet Rosati / Environmental Protection Agency - Region 9 | 4257 | 030 | 1605 | 0639-03275 |
1996/04/22 | General framework, gw RA scenarios, simulations with joint regional gw model, Del Amo/Montrose joint modeling group, w/fax TL (joint gw model) | Tom Vinckier / Dames & Moore | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4258 | 030 | 1610 | 0639-92331 |
1996/04/23 | Ltr: Transmits health & safety plan for vegetation control & debris removal, & notification that plan will be incorporated into RI/FS workplan, w/encl | John Dudley / Dames & Moore | Janet Rosati / Environmental Protection Agency - Region 9 | 4259 | 030 | 1613 | 0639-03488 |
1996/04/23 | General framework, gw RA scenarios, simulations with joint regional gw model, Del Amo/Montrose joint modeling group (draft), w/fax TL (joint gw model) | Tom Vinckier / Dames & Moore | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4260 | 030 | 1619 | 0639-92332 |
1996/04/24 | Memo: Comparison of data fr EPA oversight samples with Dames & Moore & Hargis data, 1995 3rd quarter gw monitoring, w/tables & TL | Hooshang Nezafati / C H 2 M Hill | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4261 | 030 | 1622 | 0639-92230 |
1996/04/24 | Diagram: Joint gw remedial selection schedule | Jeffrey Dhont / Environmental Protection Agency - Region 9 | - | 4262 | 030 | 1642 | 0639-92344 |
1996/04/24 | Diagram: Dissolved gw & hydraulic containment of NAPL for Del Amo & Montrose (joint site aspect) | Jeffrey Dhont / Environmental Protection Agency - Region 9 | - | 4263 | 030 | 1644 | 0639-93335 |
1996/04/26 | Technical memos: Del Amo field oversight, drilling & well installation MW-20, aquifer testing of wells, conducted 2/96, 3/96, & 4/96, w/TLs | Hooshang Nezafati / C H 2 M Hill | Jeff Dhont / Environmental Protection Agency - Region 9 | 4264 | 030 | 1646 | 0639-03164 |
1996/04/26 | Draft proposed methodology to estimate performance goals for individual compounds at Pits site - subsurface soils - migration to gw pathway, w/fax TL | Dames & Moore | Environmental Protection Agency - Region 9 | 4265 | 030 | 1677 | 0639-03226 |
1996/04/29 | Ltr: Agreement to extend deadline for revised RI rpt submission to 5/10/96, ROD timing & RI revision issues | Jeffrey Dhont / Environmental Protection Agency - Region 9 | Frank Bachman / Montrose Chemical Corp | 4266 | 030 | 1687 | 0639-92269 |
1996/04/30 | Data summary rpt measurement of emission rates & speciation of vapor phase contaminants from disturbed waste, Del Amo Waste Pit area, w/TL 4/30/96 | Dames & Moore | Shell Oil Co | 4267 | 030 | 1690 | 0639-03161 |
1996/05/00 | Sequential Gaussion K-field color depiction (joint gw model) | Dames & Moore | - | 4268 | 031 | 0001 | 0639-03495 |
1996/05/00 | Summary of TOC data, saturated zone (joint gw model) | Dames & Moore | - | 4269 | 031 | 0029 | 0639-92333 |
1996/05/00 | Proposed schedule for joint gw FS rpt | McLaren Hart Environmental Engineering Corp | - | 4270 | 031 | 0033 | 0639-93256 |
1996/05/00 | Resource Conservation & Recovery Information System (RCRIS) rpt re Montrose Chemical, w/marginalia | Resource Conservation & Recovery Information System | - | 4271 | 031 | 0036 | 0639-93383 |
1996/05/01 | Memo: Transmits updated gw modeling task schedule & notification that proposed mtg is tentatively scheduled for 5/30/96, w/schedule (faxed) | Andrew Barnes / Dames & Moore | - | 4272 | 031 | 0040 | 0639-92352 |
1996/05/03 | Memo: Transmits draft agenda for 5/7/96 Del Amo/Montrose joint regional gw modeling mtg, w/agenda (faxed) | John Dudley / Dames & Moore | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4273 | 031 | 0043 | 0639-92351 |
1996/05/03 | Ltr: Response to EPA proposed revised gw monitoring program, w/table re metal concentrations & TL to J Dhont fr J Dudley, 5/3/96 | Chuck Paine / Dames & Moore | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4274 | 031 | 0046 | 0639-93336 |
1996/05/03 | Review comments on NW corner soil SAP for former Montrose Chemical Plant (draft), 4/12/96, w/TL to J Dhont fr H Nezafati w/marginalia | C H 2 M Hill | - | 4275 | 031 | 0051 | 0639-94483 |
1996/05/04 | Map: Gw modeling - lithologic control locations, w/marginalia | Dames & Moore | - | 4276 | 031 | 0057 | 0639-93302 |
1996/05/07 | Mtg agenda (draft): Joint regional gw modeling mtg, w/revised schedule, flow calibration plots & run F12C (joint gw model) | Jeffrey Dhont / Environmental Protection Agency - Region 9 | - | 4277 | 031 | 0059 | 0639-02215 |
1996/05/10 | Ltr: Responds to 4/29/96 ltr re RI rpt & proposes revisions, w/attch | Frank Bachman / Montrose Chemical Corp | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4278 | 031 | 0081 | 0639-03324 |
1996/05/15 | DTSC comments on Draft NW corner soil SAP workplan including draft QAPP, w/TL to J Dhont fr G Holmes | CA Environmental Protection Agency - Dept of Toxic Substances Control | - | 4279 | 031 | 0091 | 0639-92383 |
1996/05/23 | Ltr: Transmits draft working docs re joint regional gw modeling, w/status memo, parameter rationale & simulations (joint gw model) | Thomas Vinckier / Dames & Moore | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4280 | 031 | 0094 | 0639-02216 |
1996/05/23 | Draft Del Amo/Montrose joint regional gw model - model simulations, w/marginalia (joint gw model) | Dames & Moore | - | 4281 | 031 | 0128 | 0639-92370 |
1996/05/24 | EIR, Del Amo Blvd overcrossing at I-405 - historic property survey rpt | CA Dept of Transportation | - | 4282 | 031 | 0134 | 0639-03701 |
1996/05/30 | Mtg agenda: Joint gw modeling mtg (joint gw model) | Environmental Protection Agency - Region 9 | - | 4283 | 031 | 0184 | 0639-92321 |
1996/05/30 | Mtg agenda: Joint gw modeling mtg (joint gw model) | Jeffrey Dhont / Environmental Protection Agency - Region 9 | - | 4284 | 031 | 0186 | 0639-92326 |
1996/05/31 | Table: Short-term & long-term performance standards (draft, for discussion), w/fax TL 5/31/96 to J Dudley fr J Dhont | Jeffrey Dhont / Environmental Protection Agency - Region 9 | - | 4285 | 031 | 0188 | 0639-93110 |
1996/06/00 | Flow calibration plots, Run F21 (joint gw model) | Jeffrey Dhont / Environmental Protection Agency - Region 9 | - | 4286 | 031 | 0191 | 0639-02217 |
1996/06/00 | Containment zone policy, final functional equivalent doc, amend of SWRCB resolution #92-49, policies re abatement of discharges under water code 13304 | CA Water Resources Control Board | - | 4287 | 031 | 0205 | 0639-03227 |
1996/06/00 | Transmits & summarizes docs on facility waste discharges, w/docs & supplement to request for industrial waste permit | Steve Simanonok / Environmental Protection Agency - Region 9 | - | 4288 | 031 | 0554 | 0639-03420 |
1996/06/03 | Memo: SVE beneath 1 series pits | Richard Haimann / C H 2 M Hill | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4289 | 031 | 0576 | 0639-94088 |
1996/06/04 | EIR, Del Amo Blvd overcrossing at I-405 - initial study/environmental assessment | CA Dept of Transportation | - | 4290 | 031 | 0579 | 0639-03702 |
1996/06/10 | Memo: Lists topics to be discussed at 6/18/96 joint regional gw modeling mtg (faxed) | Tom Vinckier / Dames & Moore | Steve Acree / Environmental Protection Agency - Robert S Kerr Environmental Research Laboratory | 4291 | 031 | 0639 | 0639-92376 |
1996/06/10 | Memo: Lists topics to be discussed at 6/18/96 joint regional gw modeling mtg (faxed) | Tom Vinckier / Dames & Moore | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4292 | 031 | 0641 | 0639-93149 |
1996/06/11 | Ltr: Proposed additional aquifer testing, Montrose site, Torrance, CA, w/fax TL to J Dhont fr D Hargis, 6/11/96 (joint gw model) | David Hargis / Hargis & Assoc, Inc | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4293 | 031 | 0643 | 0639-92322 |
1996/06/11 | Ltr: Proposed additional aquifer testing, Montrose site, Torrance, CA (joint gw model) | David Hargis / Hargis & Assoc, Inc | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4294 | 031 | 0648 | 0639-92323 |
1996/06/11 | Map: Gw modeling - benzene contours, water table zone, Del Amo, w/marginalia | Dames & Moore | - | 4295 | 031 | 0652 | 0639-93303 |
1996/06/13 | Memo: Summary of field activities 6/4/96-6/12/96, w/TL header to J Dhont fr H Nezafati | Gabriel Silva / C H 2 M Hill | Hooshang Nezafati / C H 2 M Hill | 4296 | 031 | 0655 | 0639-92202 |
1996/06/14 | Ltr: Response to 6/11/96 ltr fr Hargis & Assoc re aquifer tests at wells BF-32A & BF-33 in support of gw modeling, Montrose (joint gw model) | Jeffrey Dhont / Environmental Protection Agency - Region 9 | Frank Bachman / Montrose Chemical Corp | 4297 | 031 | 0658 | 0639-92320 |
1996/06/14 | Memo: Review of Proposed additional aquifer testing, by Hargis, 6/11/96, w/TL to J Dhont fr H Nezafati w/handwritten note | Peter Mock / C H 2 M Hill | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4298 | 031 | 0665 | 0639-94484 |
1996/06/17 | Figures (9) - Del Amo benzene, p-CBSA, trichloroethane/tetrachloroethane, dichloroethane & vinyl chloride contours (joint gw model) | Dames & Moore | - | 4299 | 031 | 0671 | 0639-03551 |
1996/06/17 | Oversize maps (12): Used in development of gw model, 1 in = 1200 ft (mapcase) | Dames & Moore | - | 4300 | 031 | 0690 | 0639-03806 |
1996/06/17 | Maps: Gw modeling | Dames & Moore | - | 4301 | 031 | 0692 | 0639-93304 |
1996/06/18 | Draft water table sources (joint gw model) | Jeffrey Dhont / Environmental Protection Agency - Region 9 | - | 4302 | 031 | 0697 | 0639-92335 |
1996/06/18 | Mtg agenda: Joint regional gw modeling mtg | Environmental Protection Agency - Region 9 | - | 4303 | 031 | 0701 | 0639-92388 |
1996/06/19 | Ltr: Transmits EPA review comments on Draft NW corner soil SAP & QAPP, 4/12/96, w/attch | Jeffrey Dhont / Environmental Protection Agency - Region 9 | Frank Bachman / Montrose Chemical Corp | 4304 | 031 | 0703 | 0639-02200 |
1996/06/20 | Ltr: Project organization & responsibilities for Montrose/Del Amo sites gw FS, w/gw FS rpt outline, fax TL & marginalia, (joint gw FS) | J Morabito / McLaren Hart Environmental Engineering Corp | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4305 | 031 | 0711 | 0639-03521 |
1996/06/20 | Memo: Lists agreed upon 6/18/96 joint regional gw modeling mtg action items (faxed) | Tom Vinckier / Dames & Moore | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4306 | 031 | 0721 | 0639-92357 |
1996/06/20 | Ltr: Project organization & project responsibilities for joint gw FS, w/fax TL, 6/20/96 (joint gw model) | Chuck Paine / Shell Oil Co | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4307 | 031 | 0723 | 0639-92365 |
1996/06/20 | Ltr: Project organization & project responsibilities for joint gw FS | Chuck Paine / Shell Oil Co | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4308 | 031 | 0728 | 0639-92366 |
1996/06/20 | Ltr: Project organization & project responsibilities for joint gw FS, w/outline of gw FS rpt | J Morabito / McLaren Hart Environmental Engineering Corp | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4309 | 031 | 0732 | 0639-92367 |
1996/06/20 | Ltr: Project organization & responsibilities for Montrose/Del Amo sites gw FS, w/gw FS rpt outline, fax TL & marginalia (joint gw FS) | J Morabito / McLaren Hart Environmental Engineering Corp | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4310 | 031 | 0740 | 0639-92368 |
1996/06/24 | Mtg agenda: Montrose/Del Amo gw FS, w/TL to J Dhont fr J Morabito | McLaren Hart Environmental Engineering Corp | - | 4311 | 031 | 0750 | 0639-92284 |
1996/06/25 | Gw modeling source term definition (draft), w/attchs & marginalia (joint gw model) | Dames & Moore | - | 4312 | 031 | 0753 | 0639-03560 |
1996/06/25 | Mtg agenda (draft): Montrose/Del Amo gw FS study mtg, w/ltr 6/20/96 to J Dhont fr J Morabito re project organization/responsibilities (joint gw model) | McLaren Hart Environmental Engineering Corp | - | 4313 | 031 | 0846 | 0639-92364 |
1996/06/25 | Joint gw modeling - sign-in sheet for Del Amo/Montrose FS mtg | Environmental Protection Agency - Region 9 | - | 4314 | 031 | 0857 | 0639-92389 |
1996/06/27 | Memo: Confirms technical direction re field oversight of removal action & review of modeling doc on sources fr Dames & Moore | Jeffrey Dhont / Environmental Protection Agency - Region 9 | Hooshang Nezafati / C H 2 M Hill | 4315 | 031 | 0859 | 0639-92304 |
1996/06/27 | Memo: Summary of mtg discussion/action items of 6/25/96 Montrose/Del Amo FS mtg, w/draft agenda, mtg attendees list, & fax TL | J Morabito / McLaren Hart Environmental Engineering Corp | mtg participants | 4316 | 031 | 0861 | 0639-92315 |
1996/06/27 | Ltr: Transmits 6/27/96 draft (version #6) outline, Del Amo gw RI rpt, w/encl | Chuck Paine / Shell Oil Co | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4317 | 031 | 0869 | 0639-93107 |
1996/06/28 | Ltr: Draft schedule for discussion & planning purposes, Del Amo gw investigations, joint FS, w/o encl (draft schedule) | Chuck Paine / Shell Oil Co | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4318 | 031 | 0875 | 0639-92345 |
1996/06/28 | Draft schedule for discussion & planning purposes - Del Amo gw investigations, joint FS & remedy selection | Dames & Moore | - | 4319 | 031 | 0878 | 0639-93253 |
1996/07/00 | Pamphlet: Your health & Montrose site | Del Amo/Montrose Environmental Health Clinic | - | 4320 | 031 | 0880 | 0639-93385 |
1996/07/02 | Monthly inspection & maintenance rpts 5/95-7/96, w/TLs to J Dhont fr J Kallok | Kallok Enterprises, Inc | Environmental Protection Agency - Region 9 | 4321 | 031 | 0883 | 0639-02162 |
1996/07/03 | Workplan to conduct para-chlorobenzene sulfonic acid (p-CBSA) treatability study (draft), w/TL to J Dhont fr J Heiser | McLaren Hart Environmental Engineering Corp | Environmental Protection Agency - Region 9 | 4322 | 031 | 0912 | 0639-03408 |
1996/07/05 | Memo: Review of focused health risk assessment contained in revised focused FS (FFS) rpt, w/marginalia | Stanford Smucker / Environmental Protection Agency - Region 9 | Janet Rosati / Environmental Protection Agency - Region 9 | 4323 | 031 | 0945 | 0639-94310 |
1996/07/08 | Joint gw flow & contaminant transport model progress summary, w/tables 1-8, figures 1a-6e, marginalia & TL to J Dhont fr M Zhu (joint gw model) | Dames & Moore | - | 4324 | 031 | 0947 | 0639-03552 |
1996/07/08 | Joint gw flow & contaminant transport model progress summary (revised), w/figures 3 & 7-8d & marginalia (joint gw model) | Dames & Moore | - | 4325 | 031 | 1008 | 0639-03553 |
1996/07/08 | Memo: Request for review of p-CBSA treatability study workplan, 7/3/96 | Jeffrey Dhont / Environmental Protection Agency - Region 9 | Hooshang Nezafati / C H 2 M Hill | 4326 | 031 | 1020 | 0639-92305 |
1996/07/08 | Memo: Notification of 7/10/96 gw modeling team conference call, w/marginalia (faxed) | Tom Vinckier / Dames & Moore | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4327 | 031 | 1022 | 0639-92358 |
1996/07/10 | Gw modeling - table 2, summary of K distribution (revised), for 7/8/96 progress summary on joint flow & transport model, w/TL fr M Zhu | Dames & Moore | - | 4328 | 031 | 1024 | 0639-93305 |
1996/07/10 | Detailed modeling schedule (draft) | - | - | 4329 | 031 | 1027 | 0639-93549 |
1996/07/15 | Ltr: Comments on 7/3/96 workplan to conduct para-chlorobenzene sulfonic acid (p-CBSA) treatability study, w/TLs | Jeffrey Dhont / Environmental Protection Agency - Region 9 | Frank Bachman / Montrose Chemical Corp | 4330 | 031 | 1030 | 0639-03350 |
1996/07/15 | Simulation criteria (joint gw model) | Dames & Moore | - | 4331 | 031 | 1038 | 0639-93350 |
1996/07/15 | Review of State Water Resources Control Bd containment zone policy | Jeffrey Dhont / Environmental Protection Agency - Region 9 | - | 4332 | 031 | 1040 | 0639-94318 |
1996/07/17 | Model behavior & source characterization simulations (draft), w/marginalia (joint gw model) | Hargis & Assoc, Inc | - | 4333 | 031 | 1043 | 0639-93351 |
1996/07/19 | FSP, NW corner of former Montrose Chemical plant, w/TL to J Dhont fr D Jones & S Carlton | McLaren Hart Environmental Engineering Corp | Environmental Protection Agency - Region 9 | 4334 | 031 | 1046 | 0639-02167 |
1996/07/19 | QAPP, NW corner of former Montrose Chemical plant | McLaren Hart Environmental Engineering Corp | - | 4335 | 031 | 1128 | 0639-02168 |
1996/07/19 | Focused abstracts (5) for selected sections of pending Del Amo gw RI rpt (AOC #92-13), w/marginalia & TL to J Dhont fr C Paine | Dames & Moore | - | 4336 | 031 | 1704 | 0639-03409 |
1996/07/19 | Memo: Transmits group 5 text, chlorobenzene source terms & model behavior & source characterization simulations, w/attchs & TL (joint gw model) | Roger Niemeyer / Hargis & Assoc, Inc | Tom Vinckier / Dames & Moore | 4337 | 031 | 1725 | 0639-03561 |
1996/07/22 | Regional gw model, general modeling scenarios (joint gw model) | - | - | 4338 | 031 | 1733 | 0639-93547 |
1996/07/24 | Results for volatile organic compounds analysis - case #R96S51, 4 water samples, w/TL to J Rosati fr B Bettencourt, 8/8/96 | Environmental Protection Agency - Region 9 Laboratory | - | 4339 | 031 | 1736 | 0639-03918 |
1996/07/24 | Analysis of halogenated volatile organics by GC - chlorobenzene data to supplement removal action progress rpt 4, w/TL to J Dhont fr J Heiser, 7/26/96 | Valerie Brunell / Del Mar Analytical | John Heiser / McLaren Hart Environmental Engineering Corp | 4340 | 031 | 1743 | 0639-93257 |
1996/07/26 | Public health assessment (draft), w/8/21/96 draft pages & TL to J Rosati fr J Riggan | CA Dept of Health Services | - | 4341 | 031 | 1747 | 0639-03582 |
1996/07/29 | Memo: Review of FSP & QAPP for NW corner of former plant, w/marginalia & TL to J Dhont fr P Torrey | Hooshang Nezafati / C H 2 M Hill | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4342 | 031 | 1851 | 0639-94506 |
1996/07/30 | Modification of Kv in LBF SW of Montrose (draft), w/attchs & marginalia (joint gw model) | Hargis & Assoc, Inc | - | 4343 | 031 | 1855 | 0639-03558 |
1996/07/30 | CBT5 chlorobenzene sources table & concentration figures, w/marginalia (joint gw model) | Dames & Moore | - | 4344 | 031 | 1880 | 0639-03562 |
1996/07/30 | SIM25 visual Modflow figures & graphs (draft) (joint gw model) | Hargis & Assoc, Inc | - | 4345 | 031 | 1888 | 0639-03563 |
1996/07/30 | Deposition of Ferdinand Suhrer, v1 of 3, US v Montrose Chemical Corp, w/review of original deposition by deponent, 8/1/96 & exhibits 1 & 2 | Ferdinand Suhrer | - | 4346 | 031 | 1905 | 0639-03969 |
1996/07/30 | Mtg agendas (2): 7/31/96 joint gw FS mtg & Del Amo RI mtg (draft), w/TL to J Dhont fr J Morabito | McLaren Hart Environmental Engineering Corp | - | 4347 | 032 | 0001 | 0639-93308 |
1996/07/31 | Deposition of Ferdinand Suhrer, v2 of 3, US v Montrose Chemical Corp, w/exhibits 3 & 4 | Ferdinand Suhrer | - | 4348 | 032 | 0005 | 0639-03970 |
1996/07/31 | TL: Example 8080 data package for soil sampling project, w/TL to J Dhont fr B Amorfini, 8/1/97 | Bud Amorfini / McLaren Hart Environmental Engineering Corp | Artemis Antipas / C H 2 M Hill | 4349 | 032 | 0206 | 0639-92483 |
1996/07/31 | Attendance sheet for joint gw FS mtg | - | - | 4350 | 032 | 0209 | 0639-93309 |
1996/08/01 | Recommended modifications to EPA comments on focused feasibility study (FFS) rpt, w/EPA comments & marginalia | Dames & Moore | Environmental Protection Agency - Region 9 | 4351 | 032 | 0211 | 0639-03444 |
1996/08/01 | Deposition of Ferdinand Suhrer, v3 of 3, US v Montrose Chemical Corp, w/exhibit 5 | Ferdinand Suhrer | - | 4352 | 032 | 0219 | 0639-03971 |
1996/08/01 | Memo: Status of technical memo summarizing recommendations & rationale for changes to gw flow model | Michael Palmer / Hargis & Assoc, Inc | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4353 | 032 | 0404 | 0639-93307 |
1996/08/02 | Technical memo: Rationale for changes to gw flow model - low Kv & aquitard mass issues, w/TL to J Dhont fr M Palmer & R Niemeyer (joint gw model) | Roger Niemeyer / Hargis & Assoc, Inc | Steve Acree / Environmental Protection Agency - Robert S Kerr Environmental Research Laboratory | 4354 | 032 | 0406 | 0639-03565 |
1996/08/02 | Memo: Discusses example 8080 data package review, w/attch (ltr to A Antipas fr B Amorfini, 7/31/96) | Bud Amorfini / McLaren Hart Environmental Engineering Corp | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4355 | 032 | 0414 | 0639-92484 |
1996/08/06 | On behalf of Del Amo Respondents, support for geometric mean approach to contour gw data in RI rpt, w/marginalia | Dames & Moore | - | 4356 | 032 | 0417 | 0639-03443 |
1996/08/06 | Ltr: Response to EPA comments on para-chlorobenzene sulfonic acid (p-CBSA) treatability study workplan, w/attch | John Heiser / McLaren Hart Environmental Engineering Corp | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4357 | 032 | 0445 | 0639-93258 |
1996/08/07 | Chlorobenzene & para-chlorobenzene sulfonic acid (p-CBSA) source terms, w/TLs (joint gw model) | Hargis & Assoc, Inc | - | 4358 | 032 | 0451 | 0639-03564 |
1996/08/07 | Ltr: Provides notice of proposed field activities for gw sampling & aquifer testing, w/TL to J Dhont fr M Palmer | Michael Palmer / Hargis & Assoc, Inc | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4359 | 032 | 0456 | 0639-92485 |
1996/08/07 | Ltr: Notice of field activities at Montrose site - gw samples & aquifer testing | Michael Palmer / Hargis & Assoc, Inc | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4360 | 032 | 0459 | 0639-93259 |
1996/08/07 | Memo: Transmits focused feasibility study (FFS) rpt wording & supplemental comments on EPA comments for conference call, w/encls & marginalia | Dave Laney / Dames & Moore | Janet Rosati / Environmental Protection Agency - Region 9 | 4361 | 032 | 0461 | 0639-93314 |
1996/08/13 | Abstract for section 4.0 of joint gw FS, w/fax TL to J Dhont fr J Morabito | McLaren Hart Environmental Engineering Corp | Environmental Protection Agency - Region 9 | 4362 | 032 | 0465 | 0639-03709 |
1996/08/13 | Memo: Transmits 8/14/97 technical memo re status of gw flow & transport model & revised table of chlorobenzene & p-CBSA source terms (joint gw model) | Roger Niemeyer / Hargis & Assoc, Inc | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4363 | 032 | 0473 | 0639-93352 |
1996/08/14 | Modeling results - F25 measured vs simulated heads & chlorobenzene concentrations, w/TL to J Dhont fr A Barnes & M Zhu (joint gw model) | Dames & Moore | - | 4364 | 032 | 0478 | 0639-03566 |
1996/08/14 | TL: MBT method detection limit (MDL) study & detection limits for pesticide immunoassay testing, w/TL to J Dhont fr B Amorfini, 8/15/96 | Bud Amorfini / McLaren Hart Environmental Engineering Corp | Artemis Antipas / C H 2 M Hill | 4365 | 032 | 0494 | 0639-92487 |
1996/08/15 | Ltr: Request for access to Southern Pacific rail spur for soil sampling, w/TL to J Dhont fr B Amorfini | Bud Amorfini / McLaren Hart Environmental Engineering Corp | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4366 | 032 | 0497 | 0639-92486 |
1996/08/15 | Ltr: Modifications to contaminant distribution section of Del Amo gw RI, w/encls | Chuck Paine / Shell Oil Co | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4367 | 032 | 0501 | 0639-93260 |
1996/08/16 | Transport parameters selected for remedial simulations, w/TL fr M Zhu (joint gw model) | Dames & Moore | - | 4368 | 032 | 0507 | 0639-93353 |
1996/08/19 | Ltr: Notice of field activity for gw & soil sampling, w/TL to J Dhont fr M Palmer | Michael Palmer / Hargis & Assoc, Inc | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4369 | 032 | 0511 | 0639-93188 |
1996/08/19 | Ltr: Notice of field activity at Montrose site - gw & soil samples at request of Latham & Watkins | Michael Palmer / Hargis & Assoc, Inc | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4370 | 032 | 0514 | 0639-93261 |
1996/08/19 | Mtg agenda (draft): 8/22/96 joint gw modeling team, w/TL fr A Barnes | Dames & Moore | - | 4371 | 032 | 0516 | 0639-93262 |
1996/08/19 | Wording to replace 2nd paragraph under soil vapor extraction zone, EPA fax, w/TL to J Rosati fr D Laney | Dames & Moore | - | 4372 | 032 | 0519 | 0639-93315 |
1996/08/19 | Memo: Review of FSP & QAPP for NW corner of former plant, w/marginalia | Hooshang Nezafati / C H 2 M Hill | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4373 | 032 | 0522 | 0639-94521 |
1996/08/20 | Draft language to insert in last paragraph of section 2.4.1, w/TL to J Dhont fr J Dudley | Dames & Moore | - | 4374 | 032 | 0525 | 0639-93316 |
1996/08/21 | Ltr: Notication Dames & Moore will use revised facsimile for transmission of info to EPA, w/TL to J Dhont fr J Dudley | Michael Steuer / Dames & Moore | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4375 | 032 | 0528 | 0639-93146 |
1996/08/22 | Data validation rpt: Case #R96S51, 4 low level water samples, collected 6/5/96 & 6/6/96, w/TL to J Dhont fr D Richmond | Dawn Richmond / Environmental Protection Agency - Region 9 | Environmental Protection Agency - Region 9 | 4376 | 032 | 0531 | 0639-03397 |
1996/08/22 | Mtg agenda: 8/22/96 joint gw modeling team mtg, w/handouts (joint gw model) | - | - | 4377 | 032 | 0546 | 0639-03567 |
1996/08/23 | Copies of overheads presented in 8/22/96 modeling mtg, w/TL to J Dhont fr R Niemeyer (joint gw model) | Hargis & Assoc, Inc | - | 4378 | 032 | 0560 | 0639-03568 |
1996/08/23 | Simulation results of no-action scenarios & benzene isolation zone scenario, w/TL to J Dhont fr M Zhu (joint gw model) | Dames & Moore | - | 4379 | 032 | 0586 | 0639-03569 |
1996/08/26 | Memo: Daily field activity log for oversight activities, 8/14/96-8/19/96 | Hooshang Nezafati / C H 2 M Hill | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4380 | 032 | 0624 | 0639-92477 |
1996/08/27 | Memo: Comments on abstract for section 4.0 of joint gw FS, w/TL header to J Dhont fr H Nezafati, 8/28/97 | Hooshang Nezafati / C H 2 M Hill | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4381 | 032 | 0627 | 0639-94070 |
1996/08/27 | Memo: Review of gw FS section 4 abstract, Montrose/Del Amo study area w/TL header | Hooshang Nezfati / C H 2 M Hill | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4382 | 032 | 0630 | 0639-94089 |
1996/08/28 | Containment zone & shrinkage zone scenarios, w/marginalia (joint gw model) | Dames & Moore | - | 4383 | 032 | 0633 | 0639-93354 |
1996/08/28 | Memo: Review of response to EPA comments re p-CBSA (para-chlorobenzene sulfonic acid) treatability study, McLaren/Hart, 8/6/96 | Hooshang Nezfati / C H 2 M Hill | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4384 | 032 | 0638 | 0639-94090 |
1996/08/29 | Data validation rpt: Case #24743, memo #1, 8 low level gw samples, collected 6/5/97, 6/10/97 & 6/11/97, w/TL to J Rosati fr J Berges | Adriane Scheele / Lockheed Martin Environmental Services | Environmental Protection Agency - Region 9 | 4385 | 032 | 0641 | 0639-03403 |
1996/08/29 | Ltr: Intent to discharge gw at Montrose site & status of monitor well sampling, w/encl & TL to J Dhont fr M Palmer | Michael Palmer / Hargis & Assoc, Inc | Josh Workman / CA Regional Water Quality Control Board - Los Angeles Basin Region | 4386 | 032 | 0672 | 0639-93263 |
1996/08/30 | Ltr: Transmits data assessment & data validation supplement to 1/17/96 gw sampling data submittal, w/supplement, w/o amended laboratory analytical rpt | Michael Palmer / Hargis & Assoc, Inc | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4387 | 032 | 0677 | 0639-03410 |
1996/08/30 | Maps (4): Benzene half-life distribution, Del Amo (joint gw model) | Dames & Moore | - | 4388 | 032 | 0688 | 0639-03570 |
1996/08/30 | Ltr: Transmits data assessment & data validation suppl to 1/17/96 results, gw sampling data submittal, 10/95-12/95, & amended analytic rpt, w/attchs | Jeffrey Dhont / Environmental Protection Agency - Region 9 | Michael Palmer / Hargis & Assoc, Inc | 4389 | 032 | 0697 | 0639-03931 |
1996/08/30 | Draft table of contents, joint gw FS | McLaren Hart Environmental Engineering Corp | Environmental Protection Agency - Region 9 | 4390 | 032 | 0741 | 0639-92134 |
1996/08/30 | Mtg agenda (draft): Joint gw FS progress mtg, 9/4/96, w/TLs to J Rosati & J Dhont fr J Dudley (joint gw model) | Dames & Moore | - | 4391 | 032 | 0746 | 0639-93355 |
1996/08/30 | Memo: Review of 8/96 transmittals fr Montrose & Del Amo re flow & solute transport model, w/TL header to J Dhont fr H Nezafati (joint gw model) | Peter Mock / C H 2 M Hill | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4392 | 032 | 0750 | 0639-93356 |
1996/09/00 | Proposed outline for joint gw FS mtg between EPA & joint parties | Environmental Protection Agency - Region 9 | - | 4393 | 032 | 0752 | 0639-03706 |
1996/09/00 | Article: Ground water currents - chlorinated solvents biodegradation (Ground water currents, #16) w/marginalia | Environmental Protection Agency - Office of Solid Waste & Emergency Response | - | 4394 | 032 | 0759 | 0639-93267 |
1996/09/00 | Draft proposal - risk assessment for gw | Jeffrey Dhont / Environmental Protection Agency - Region 9 | - | 4395 | 032 | 0764 | 0639-93282 |
1996/09/02 | Draft list of figures, joint gw FS | McLaren Hart Environmental Engineering Corp | Environmental Protection Agency - Region 9 | 4396 | 032 | 0767 | 0639-92135 |
1996/09/04 | Mtg minutes: Gw modeling & FS mtg, w/TL fr M Schultheis, 9/9/96 | Dames & Moore | - | 4397 | 032 | 0769 | 0639-93264 |
1996/09/04 | Sign-in sheet for 9/4/96 joint gw FS progress mtg (joint gw model) | - | - | 4398 | 032 | 0774 | 0639-93357 |
1996/09/07 | Simulation results of group 3 runs for benzene & chlorobenzene, w/summary of well fields & TL to J Dhont fr M Zhu (joint gw model) | Dames & Moore | - | 4399 | 032 | 0776 | 0639-03571 |
1996/09/09 | Memo: Summarizes oversight of field activities, including 9/4/96-9/5/96 aquifer tests at wells BF-33 & BF-32A, w/TL to J Dhont fr H Nezafati, 9/13/96 | Hooshang Nezafati / C H 2 M Hill | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4400 | 032 | 0790 | 0639-93191 |
1996/09/10 | Ltr: Comments on gw RI rpt section 4.0 abstract, joint gw FS & joint gw risk assessment, w/TLs to J Moribido & M Schultheis fr J Dhont | Jeffrey Dhont / Environmental Protection Agency - Region 9 | Frank Bachman / Montrose Chemical Corp | 4401 | 032 | 0794 | 0639-03411 |
1996/09/11 | Ltr: Responds to 5/10/96 ltr re RI rpt & addresses schedule for completion | Jeffrey Dhont / Environmental Protection Agency - Region 9 | Frank Bachman / Montrose Chemical Corp | 4402 | 032 | 0802 | 0639-03323 |
1996/09/20 | Memo: Transmits draft comments on final focused feasibility study (FFS) & draft response to 9/4/96 ltr fr C Paine, w/attchs | Hooshang Nezafati / C H 2 M Hill | Janet Rosati / Environmental Protection Agency - Region 9 | 4403 | 032 | 0812 | 0639-03445 |
1996/09/20 | Ltr: Off-site access update for NW corner soil sampling, w/TLs | Douglas Jones / McLaren Hart Environmental Engineering Corp | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4404 | 032 | 0824 | 0639-93205 |
1996/09/20 | Ltr: Response to J Dhont ltr of 9/11/96 to F Bachman re RI rpt for site, w/fax TL to fr K Lytz | Karl Lytz / Latham & Watkins (Attorneys) | John Lyons / Environmental Protection Agency - Region 9 | 4405 | 032 | 0829 | 0639-94421 |
1996/09/24 | TL: transmits VHS videotape documenting sediments in D31-D30 segment of JO"D" sewer | John Heiser / McLaren Hart Environmental Engineering Corp | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4406 | 032 | 0835 | 0639-92471 |
1996/09/24 | Memo: Announces 10/2/96 joint gw modeling team mtg | John Dudley / Dames & Moore | - | 4407 | 032 | 0837 | 0639-93265 |
1996/09/26 | Memo: National Remedy Review Board (NRRB) progress update & operating procedures, w/fact sheet & TLs to M Palmer fr J Dhont, 1/24/97 | Stephen Luftig / Environmental Protection Agency - Office of Emergency & Remedial Response | Environmental Protection Agency - Region 9 | 4408 | 032 | 0839 | 0639-03402 |
1996/09/27 | Ltr: Commitment to conduct SOW for baseline gw risk assessment at Del Amo site to support joint gw FS (AOC #92-13), w/attch | Chuck Paine / Shell Oil Co | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4409 | 032 | 0850 | 0639-93266 |
1996/09/30 | Visual Modflow figures (10) - scenarios 3A3 & 3A5, 9/25/96-9/30/96 (joint gw model) | Dames & Moore | - | 4410 | 032 | 0856 | 0639-03572 |
1996/10/01 | Review draft final RI, sections 2, 3 & 4 (text, tables & illustrations), w/TL to J Dhont fr M Palmer & A Halliburton | Hargis & Assoc, Inc | Environmental Protection Agency - Region 9 | 4411 | 032 | 0867 | 0639-03644 |
1996/10/02 | Amended SWRCB resolution #92-49, policies & procedures for inves & cleanup & abatement of discharges under water code sect 13304, w/TL fr E Babcock | CA Water Resources Control Board | - | 4412 | 032 | 1140 | 0639-03526 |
1996/10/02 | Sign-in sheet for joint gw modeling/FS mtg (joint gw model) | - | - | 4413 | 032 | 1157 | 0639-93373 |
1996/10/03 | Montrose RI rpt appendices A-C, E & F (preliminary draft) | Hargis & Assoc, Inc | Montrose Chemical Corp | 4414 | 032 | 1159 | 0639-03674 |
1996/10/03 | Montrose RI rpt appendices D & G-J & section 1 air photos (preliminary draft), w/TL to J Dhont fr A Halliburton | Hargis & Assoc, Inc | Montrose Chemical Corp | 4415 | 032 | 1520 | 0639-03675 |
1996/10/03 | Memo: Summary of gw modeling mtg, including action items | Tom Vinckier / Dames & Moore | - | 4416 | 032 | 2063 | 0639-93268 |
1996/10/08 | Ltr: Transmits amended resolution #92-49 (State Water Resources Control Bd) w/encl | Christine Bailey / CA Environmental Protection Agency | - | 4417 | 032 | 2065 | 0639-04786 |
1996/10/09 | EPA facilitative review comments of Montrose FS docs, w/TLs | Environmental Protection Agency - Region 9 | - | 4418 | 032 | 2082 | 0639-03386 |
1996/10/10 | Draft Technical Memo: RCRA landfill closures case histories, BKK Landfill, West Covina, w/TL 11/13/96 (land-use) | Timothy Laumakis / C H 2 M Hill | Hooshang Nezafati / C H 2 M Hill | 4419 | 033 | 0001 | 0639-04777 |
1996/10/15 | Model results (draft) - initial & projected MCB concentrations & containment zone, w/TL to J Dhont fr T Leo (joint gw model) | Hargis & Assoc, Inc | - | 4420 | 033 | 0023 | 0639-03573 |
1996/10/18 | Modeling results for discussion in 10/30/96 conference call - RW31, w/TL to J Dhont fr T Leo, 10/29/96 (joint gw model) | Hargis & Assoc, Inc | - | 4421 | 033 | 0052 | 0639-03576 |
1996/10/18 | Preliminary review draft RI, sections 1, 5 & 6 (text, tables & illustrations), w/marginalia & TL to J Dhont fr M Palmer & A Halliburton | Hargis & Assoc, Inc | Environmental Protection Agency - Region 9 | 4422 | 033 | 0074 | 0639-03645 |
1996/10/22 | Ltr: Transmits draft gw RI rpt, Del Amo study area (AOC #92-13) & distribution table, w/o rpt, w/table | Chuck Paine / Shell Oil Co | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4423 | 033 | 0609 | 0639-00224 |
1996/10/22 | Draft gw RI rpt, Del Amo, v1 of 3, text, tables & figures (AOC #92-13), w/TL to J Dhont fr C Paine | Dames & Moore | Shell Oil Co | 4424 | 033 | 0612 | 0639-03313 |
1996/10/22 | Draft gw RI rpt, Del Amo, v2 of 3, appendices A-D (AOC #92-13) | Dames & Moore | Shell Oil Co | 4425 | 033 | 1062 | 0639-03314 |
1996/10/22 | Draft gw RI rpt, Del Amo, v3 of 3, appendices E-J (AOC #92-13) | Dames & Moore | Shell Oil Co | 4426 | 034 | 0001 | 0639-03315 |
1996/10/23 | TL: Planning, scope & methods docs pertinent to gw sampling & monitoring activities at Del Amo | Gib Fates / Dames & Moore | Liza Finley / Environmental Protection Agency - Richmond Field Station | 4427 | 034 | 1158 | 0639-93269 |
1996/10/25 | Del Amo Action Committee comments to public health assessment | Sherry Chan / CA Dept of Health Services - Environmental Health Investigations Branch | - | 4428 | 034 | 1161 | 0639-04789 |
1996/10/25 | Table - monochlorobenzene (MCB) plume reduction scenario, 3A15 well field, hybrid approach, w/TL to J Dhont fr A Barnes, 10/30/96 | Hargis & Assoc, Inc | - | 4429 | 034 | 1193 | 0639-93270 |
1996/10/29 | Additional results of 3A15 well field, w/TL to J Dhont fr M Zhu (joint gw model) | Dames & Moore | - | 4430 | 034 | 1196 | 0639-03574 |
1996/10/29 | Figures (9) - TCE/PCE plumes, 3A15 well field, w/TL to J Dhont fr M Zhu (joint gw model) | Dames & Moore | - | 4431 | 034 | 1207 | 0639-03575 |
1996/11/01 | Ltr: Transmits scenario 3 results discussed in 10/30/96 conference call & results for 3CB18, 3CB19 & 3CB20, w/attchs (joint gw model) | Jeffrey Dhont / Environmental Protection Agency - Region 9 | Ming Zhu / Dames & Moore | 4432 | 034 | 1218 | 0639-03577 |
1996/11/05 | Ltr: Follow-up on recent phone conversation re status of RI rpt, w/fax TL to J Dhont fr M Palmer, 11/6/96 | Michael Palmer / Hargis & Assoc, Inc | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4433 | 034 | 1233 | 0639-93365 |
1996/11/06 | Model results (draft) for 11/7/96 conference call, w/TL to J Dhont fr T Leo | Hargis & Assoc, Inc | - | 4434 | 034 | 1236 | 0639-03423 |
1996/11/07 | Memo: Transmits 3A15 annual flushed pore volume & hydraulic dradient, w/encls (joint gw model) | Ming Zhu / Dames & Moore | - | 4435 | 034 | 1264 | 0639-93358 |
1996/11/08 | 3A15 flushed pore volume plots (computer disc) & chlorobenzene plume reduction scenario 3 head drop, w/TL to J Dhont fr M Zhu (joint gw model) | Dames & Moore | - | 4436 | 034 | 1269 | 0639-03578 |
1996/11/11 | TL: Computer disc containing sections 1.3 & 1.4 of RI rpt | Andrew Halliburton / Hargis & Assoc, Inc | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4437 | 034 | 1273 | 0639-93370 |
1996/11/15 | Results for volatile organic compounds analysis - case #R97S04, low level water samples, w/TL to J Dhont fr B Bettencourt, 12/2/96 | Environmental Protection Agency - Region 9 Laboratory | - | 4438 | 034 | 1275 | 0639-03404 |
1996/11/18 | Memo: Field oversight rpt - litigation support field activities by Hargis, including gw & soil sampling | Hooshang Nezafati / C H 2 M Hill | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4439 | 034 | 1281 | 0639-03396 |
1996/11/19 | Ltr: Transmits annotated table of proposals & revisions to gw monitoring prog & annotated benzene concentration maps for water table zone, w/encls | Gib Fates / Dames & Moore | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4440 | 034 | 1293 | 0639-03412 |
1996/11/19 | Road map to responses to RI comments, w/TL to J Dhont fr A Halliburton | Hargis & Assoc, Inc | - | 4441 | 034 | 1309 | 0639-92488 |
1996/11/19 | Ltr: Approves revisions to 9/4/96 final focused FS (FFS), Del Amo waste pit area | Janet Rosati / Environmental Protection Agency - Region 9 | C Paine / Shell Oil Co | 4442 | 034 | 1314 | 0639-94126 |
1996/11/20 | Health consultation - potential health impact due to emissions fr waste pits, w/rtg slip | CA Dept of Health Services - Environmental Health Investigations Branch | - | 4443 | 034 | 1316 | 0639-03442 |
1996/11/22 | Memo: Transmits proposed revised gw FS outline & schedule of deliverables, w/encls & TL to J Dhont fr T Vinckier, 11/26/96 | Mark Schultheis / Dames & Moore | J Morabito / McLaren Hart Environmental Engineering Corp | 4444 | 034 | 1340 | 0639-03413 |
1996/11/22 | Memo: Transmits ARARs comments on focused FS rpt, w/encls | David Laney / Dames & Moore | Janet Rosati / Environmental Protection Agency - Region 9 | 4445 | 034 | 1350 | 0639-94320 |
1996/11/25 | Ltr: Transmits final Del Amo & Montrose community relations plan (CRP), w/o computer disc, w/hard copy | Christine Roberts / C H 2 M Hill | David Cooper / Environmental Protection Agency - Hazardous Site Control Div | 4446 | 034 | 1356 | 0639-03585 |
1996/11/26 | Ltr: Permit application for construction/operation of an air stripper & thermal oxidizer at MW-20 LNAPL area | Cynthia Wetmore / Environmental Protection Agency - Region 9 | Chuck Paine / Shell Oil Co | 4447 | 034 | 1396 | 0639-92967 |
1996/11/26 | Ltr: Conditionally approves FSP & QAPP for NW corner, gives notice to proceed on soil sampling & reiterates request to patch asphalt cap | Jeffrey Dhont / Environmental Protection Agency - Region 9 | Frank Bachman / Montrose Chemical Corp | 4448 | 034 | 1399 | 0639-93192 |
1996/11/26 | Table of monitoring wells & chemical analyses for annual Del Amo gw monitoring event (AOC #92-13), w/TL to J Dhont fr C Paine | Shell Oil Co | - | 4449 | 034 | 1405 | 0639-93271 |
1996/11/26 | Ltr: Review of permit application for construction/operation of air stripper & thermal oxidizer at MW-20 LNAPL area | Cynthia Wetmore / Environmental Protection Agency - Region 9 | Chuck Paine / Shell Oil Co | 4450 | 034 | 1410 | 0639-93311 |
1996/11/27 | Computer disc: RW35 extraction/injection well details, maps & estimated chemical characteristics of effluent water, w/printouts & TL (joint gw model) | Dames & Moore | - | 4451 | 034 | 1413 | 0639-03579 |
1996/11/27 | Data validation rpt: Case #25065, memo #01, low level gw, collected 10/11, 15 & 16/96, w/TL to D Rodriguez fr J Berges | Dina David / Lockheed Martin Corp | Environmental Protection Agency - Region 9 | 4452 | 034 | 1421 | 0639-04780 |
1996/12/00 | Preliminary screening of remedial technology types & process options (draft) (joint gw model) | Dames & Moore | - | 4453 | 034 | 1445 | 0639-93374 |
1996/12/00 | Handwritten Notes: Public mtg presentation (land-use) | Dante Rodriguez / Environmental Protection Agency - Region 9 | - | 4454 | 034 | 1450 | 0639-94132 |
1996/12/00 | Supplement to proposed plan for cleanup of Del Amo waste pit area | Dante Rodriguez / Environmental Protection Agency - Region 9 | - | 4455 | 034 | 1457 | 0639-94325 |
1996/12/00 | Fact sheet: Community mtg on status of Del Amo/Montrose cleanup effort (in English & Spanish) | Environmental Protection Agency - Region 9 | - | 4456 | 034 | 1462 | 0639-94395 |
1996/12/00 | Original 1997 due dates for PRP version of joint gw FS | - | - | 4457 | 034 | 1465 | 0639-94418 |
1996/12/02 | Ltr: Transmits Spanish translation of Del Amo proposed plan w/plan on computer disc (WP 5.1) & paper copy, w/encls | Gary Bippert / OMNI Interpreting & Translating Network | David Cooper / Environmental Protection Agency - Region 9 | 4458 | 034 | 1467 | 0639-04787 |
1996/12/02 | Memo: Announces 12/4/96 joint gw modeling & FS mtg | John Dudley / Dames & Moore | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4459 | 034 | 1488 | 0639-93272 |
1996/12/04 | Insertion (alternative paragraph) for section 7 of focused FS (FFS) w/TL & marginalia | Dames & Moore | - | 4460 | 034 | 1490 | 0639-94125 |
1996/12/05 | Excerpt: Focused FS (FFS) Del Amo Waste Pit Area, w/TL | Dames & Moore | - | 4461 | 034 | 1493 | 0639-04770 |
1996/12/06 | Memo: Transmits insertions & replacements to proposed plan, w/encl & marginalia | John Dudley / Dames & Moore | Dante Rodriguez / Environmental Protection Agency - Region 9 | 4462 | 034 | 1520 | 0639-94321 |
1996/12/10 | Mtg agenda: Joint gw remedy mtg, 12/13/96, w/TLs to P Garcia & H Marley fr J Dhont, 12/9/96 | Environmental Protection Agency - Region 9 | - | 4463 | 034 | 1523 | 0639-93248 |
1996/12/10 | Memo: Position on para-chlorobenzene sulfonic acid (p-CBSA), w/TL to J Dhont | CA Regional Water Quality Control Board - Los Angeles Basin Region | CA Regional Water Quality Control Board - Los Angeles Basin Region | 4464 | 034 | 1527 | 0639-93283 |
1996/12/10 | Mtg agenda: Superfund site mtg, w/sign-in sheet | Environmental Protection Agency - Region 9 | - | 4465 | 034 | 1529 | 0639-93362 |
1996/12/11 | Memo: Transmits draft table of contents & master schedule for proposed joint gw FS, w/encls & marginalia | J Morabito / McLaren Hart Environmental Engineering Corp | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4466 | 034 | 1532 | 0639-03425 |
1996/12/11 | Ltr: Transmits hard copy & computer disc (WP 5.0) of final draft of English to Spanish translation of proposed plan, w/encls | Gary Bippert / OMNI Interpreting & Translating Network | Dante Rodriguez / Environmental Protection Agency - Region 9 | 4467 | 034 | 1544 | 0639-04788 |
1996/12/11 | Ltr: Approves 9/4/96 final focused feasibility study (FFS) rpt | Dante Rodriguez / Environmental Protection Agency - Region 9 | Chuck Paine / Shell Oil Co | 4468 | 034 | 1553 | 0639-93384 |
1996/12/12 | Gw monitoring rpt, 2nd sampling period 1996, Del Amo (AOC #92-13), w/TL to J Dhont fr C Paine | Dames & Moore | Shell Oil Co | 4469 | 034 | 1556 | 0639-03421 |
1996/12/13 | Overheads, including agenda, for 12/13/96 joint gw remedy mtg | CA Regional Water Quality Control Board - Los Angeles Basin Region | - | 4470 | 035 | 0001 | 0639-03424 |
1996/12/13 | Draft schedule for joint gw FS modeling & rpt deliverables, w/TL to J Dhont fr J Morabito | McLaren Hart Environmental Engineering Corp | - | 4471 | 035 | 0019 | 0639-93284 |
1996/12/16 | Memo: Interim FS schedule of deliverables | Jeffrey Dhont / Environmental Protection Agency - Region 9 | Hooshang Nezafati / C H 2 M Hill | 4472 | 035 | 0024 | 0639-94330 |
1996/12/16 | Proof of publication of public notice that EPA begins public comment period for waste pits proposed cleanup plan | Nancy Green / Daily Breeze (Newspaper) | Environmental Protection Agency - Region 9 | 4473 | 035 | 0026 | 0639-94417 |
1996/12/17 | Memo: Draft review of 10/1/96 review draft final RI (sects 2, 3 & 4) & 10/18/96 preliminary review draft RI (sects 1, 5 & 6), w/marginalia | Hooshang Nezafati / C H 2 M Hill | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4474 | 035 | 0028 | 0639-03345 |
1996/12/18 | Memo: Review of 10/22/96 draft Del Amo gw RI rpt (draft), w/attchs & TL to J Dhont fr H Nezafati, 12/24/96 | Hooshang Nezafati / C H 2 M Hill | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4475 | 035 | 0046 | 0639-03435 |
1996/12/18 | Risk assessment issue paper for para-chlorobenzene sulfonic acid (p-CBSA), w/TL to J Dhont fr S Smucker | Environmental Protection Agency - National Center for Environmental Assessment | Stanford Smucker / Environmental Protection Agency - Region 9 | 4476 | 035 | 0062 | 0639-94092 |
1996/12/19 | Method detection limit (MDL) study for immunoassay screening test for DDT in NW corner soil, w/TLs | C L S Labs | McLaren Hart Environmental Engineering Corp | 4477 | 035 | 0068 | 0639-03347 |
1996/12/19 | Ltr: Question re para-chlorobenzene sulfonic acid (p-CBSA) plume, w/o responses | Alan Youkeles / Environmental Protection Agency - Region 9 | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4478 | 035 | 0088 | 0639-94071 |
1996/12/24 | Memo: Transmits review of public comments on HRS package & summary p fr HRS documentation record, w/attchs | Gary Yao / Bechtel Environmental, Inc | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4479 | 035 | 0090 | 0639-92140 |
1996/12/30 | Memo: Review of 10/22/96 draft Del Amo gw RI rpt, w/attchs (mw-20) | Hooshang Nezafati / C H 2 M Hill | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4480 | 035 | 0096 | 0639-03437 |
1996/12/30 | Memo: Review of responses to EPA comments on draft Montrose RI rpt (superseded) | Hooshang Nezafati / C H 2 M Hill | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4481 | 035 | 0111 | 0639-03770 |
1996/12/30 | Memo: Del Amo gw sampling field audit | Liza Finley / Environmental Protection Agency - Region 9 Laboratory | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4482 | 035 | 0130 | 0639-93298 |
1996/12/31 | Memo: Figures referenced in CH2M Hill 12/18/96 review of responses to EPA comments on draft Montrose RI rpt, w/attchs | Andrew Halliburton / Hargis & Assoc, Inc | - | 4483 | 035 | 0134 | 0639-03768 |
1996/12/31 | Memo: Comments on Del Amo gw monitoring rpt, 2nd sampling period 1996, w/TL to J Dhont fr H Nezafati, 1/2/97 | Hooshang Nezafati / C H 2 M Hill | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4484 | 035 | 0142 | 0639-94508 |
1997/00/00 | Draft revised Montrose RI rpt, pt 1 of 3 | C H 2 M Hill | Environmental Protection Agency - Region 9 | 4485 | 035 | 0146 | 0639-04762 |
1997/00/00 | Draft revised Montrose RI rpt, pt 2 of 3, physical characteristics | C H 2 M Hill | Environmental Protection Agency - Region 9 | 4486 | 035 | 0457 | 0639-04765 |
1997/00/00 | Draft revised Montrose RI rpt, pt 3 of 3, nature & extent of contamination | C H 2 M Hill | Environmental Protection Agency - Region 9 | 4487 | 035 | 0586 | 0639-04766 |
1997/01/00 | National Remedy Review Board (NRRB) progress rpt for fiscal year 1996, w/TL fr B Means, 12/19/96 | Environmental Protection Agency - Office of Emergency & Remedial Response | - | 4488 | 035 | 0686 | 0639-03406 |
1997/01/00 | Fact sheet: Public mtg for comments on proposed cleanup plan for waste pits | Environmental Protection Agency - Region 9 | - | 4489 | 035 | 0748 | 0639-91759 |
1997/01/03 | Ltr: Results of aquifer testing at Montrose, 9/4/96-9/6/96, w/attchs | Michael Palmer / Hargis & Assoc, Inc | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4490 | 035 | 0751 | 0639-03426 |
1997/01/03 | Revised abstracts for sections 1.0-3.0 of joint gw FS, w/TL to J Dhont fr J Morabito | McLaren Hart Environmental Engineering Corp | Environmental Protection Agency - Region 9 | 4491 | 035 | 0761 | 0639-03707 |
1997/01/06 | Gw risk assessment approach for combined plumes, w/TLs | McLaren Hart Environmental Engineering Corp | - | 4492 | 035 | 0777 | 0639-03427 |
1997/01/06 | Table indicating corrected scope for annual Del Amo gw monitoring event, w/TL to J Dhont fr E Weaver | Dames & Moore | - | 4493 | 035 | 0785 | 0639-93273 |
1997/01/07 | Memo: Para-chlorobenzene sulfonic acid (p-CBSA) at site | Jeffrey Dhont / Environmental Protection Agency - Region 9 | Alan Youkeles / Environmental Protection Agency - Region 9 | 4494 | 035 | 0790 | 0639-94093 |
1997/01/08 | Rough draft response to final installment EPA comments on draft Del Amo gw RI rpt, w/marginalia & TL to J Dhont fr J Dudley | Dames & Moore | Environmental Protection Agency - Region 9 | 4495 | 035 | 0794 | 0639-03764 |
1997/01/09 | Figure 5.2 of joint gw FS, w/fax TLs | McLaren Hart Environmental Engineering Corp | Environmental Protection Agency - Region 9 | 4496 | 035 | 0806 | 0639-03708 |
1997/01/09 | Ltr: Review of 12/12/96 Del Amo gw monitoring rpt, 2nd sampling period 1996 (AOC #92-13) | Jeffrey Dhont / Environmental Protection Agency - Region 9 | Chuck Paine / Shell Oil Co | 4497 | 035 | 0813 | 0639-93285 |
1997/01/09 | Headers for RI - 5.0, nature & extent of contamination, w/TL to A Halliburton fr J Dhont, 1/10/97 | C H 2 M Hill | - | 4498 | 035 | 0816 | 0639-93364 |
1997/01/09 | Technical memo: Suggested remedial action objectives (RAOs) for joint FS rpt, w/TL to J Dhont fr H Nezafati, 1/10/97 | Hooshang Nezafati / C H 2 M Hill | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4499 | 035 | 0821 | 0639-94072 |
1997/01/10 | Data validation rpt: Case #R97S04, 5 low level water samples, collected 10/11/96, w/TL to J Dhont fr D Richmond | Dawn Richmond / Environmental Protection Agency - Region 9 | Environmental Protection Agency - Region 9 | 4500 | 035 | 0824 | 0639-03398 |
1997/01/10 | Notes on supporting comments fr 12/18/96 review of responses to EPA comments, Montrose RI, for conference call, w/marginalia & TL fr A Halliburton | Andrew Halliburton / Hargis & Assoc, Inc | - | 4501 | 035 | 0824 | 0639-03767 |
1997/01/10 | Ltr: Request for proposed state ARARs for joint gw remedy | Jeffrey Dhont / Environmental Protection Agency - Region 9 | Peter Garcia / CA Environmental Protection Agency - Dept of Toxic Substances Control | 4502 | 035 | 0851 | 0639-93249 |
1997/01/12 | Technical memo: Proposed methodology for final ecological risk assessment, w/TL to J Dhont fr H Nezafati, 1/17/97 | Harry Ohlendorf / C H 2 M Hill | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4503 | 035 | 0854 | 0639-03338 |
1997/01/12 | Mtg agenda: EPA revised version of joint gw FS, w/handouts | Environmental Protection Agency - Region 9 | - | 4504 | 035 | 0870 | 0639-03723 |
1997/01/12 | Technical memo: Proposed methodology for final ecological risk assessment, w/TL to J Dhont fr H Nezafati, 2/18/98 | Harry Ohlendorf / C H 2 M Hill | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4505 | 035 | 0881 | 0639-04920 |
1997/01/13 | Technical memo: Comments on abstracts for sections 1 to 3 & figure 5-2 of joint gw FS, w/attch & TLs, 1/24/97 | Hooshang Nezafati / C H 2 M Hill | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4506 | 035 | 0897 | 0639-03436 |
1997/01/13 | Sample draft RI tables showing analytical methods for soil & gw samples, w/TL to J Dhont fr A Halliburton | Hargis & Assoc, Inc | - | 4507 | 035 | 0907 | 0639-93561 |
1997/01/14 | 1st installment EPA comments on 10/22/96 draft Del Amo gw RI rpt (AOC #92-13), w/TL to C Paine fr J Dhont, 1/14/97 | Environmental Protection Agency - Region 9 | Shell Oil Co | 4508 | 035 | 0911 | 0639-03383 |
1997/01/14 | Ltr: Discusses status of joint FS study, FS & ROD sched, National Remedy Review Board & gw risk assessment issues (AOC #85-04 & AOC #92-13), w/TLs | Jeffrey Dhont / Environmental Protection Agency - Region 9 | Frank Bachman / Montrose Chemical Corp | 4509 | 035 | 0927 | 0639-03384 |
1997/01/14 | Mtg agenda: EPA revised version of joint gw FS, w/handouts | Environmental Protection Agency - Region 9 | Montrose Chemical Corp | 4510 | 035 | 0938 | 0639-03753 |
1997/01/14 | Technical memo: Remaining tasks for review of draft RI rpt, w/draft RI p 2-36 & TL to J Dhont fr J Dolegowski, 1/16/97 | John Dolegowski / C H 2 M Hill | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4511 | 035 | 0949 | 0639-94067 |
1997/01/15 | Abstract for section 6.0 & table 6.1 of joint gw FS, w/TL to J Dhont fr J Morabito | McLaren Hart Environmental Engineering Corp | Environmental Protection Agency - Region 9 | 4512 | 035 | 0954 | 0639-03385 |
1997/01/15 | Abstract for section 6.0 & table 6.1 of joint gw FS, w/marginalia & TLs to J Dhont fr J Morabito | McLaren Hart Environmental Engineering Corp | Environmental Protection Agency - Region 9 | 4513 | 035 | 0962 | 0639-03710 |
1997/01/17 | Ltr: Transmits draft interim data submittal, tables & figures of final joint gw model & model simulations, w/encls | Andrew Barnes / Dames & Moore | Steve Acree / Environmental Protection Agency - Robert S Kerr Environmental Research Laboratory | 4514 | 035 | 0971 | 0639-03414 |
1997/01/17 | Summary of remedial wellfield simulations (draft), w/TL to S Acree fr T Leo, 1/20/97 | Hargis & Assoc, Inc | - | 4515 | 035 | 1159 | 0639-03415 |
1997/01/17 | Memo: Review of responses to EPA comments on draft Montrose RI rpt (revised) | Hooshang Nezafati / C H 2 M Hill | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4516 | 035 | 1450 | 0639-03769 |
1997/01/17 | Ltr: Response to 1/9/97 ltr re EPA comments on 1/12/96 Del Amo gw monitoring rpt, 2nd sampling period, 1996 (AOC #92-13) | Chuck Paine / Shell Oil Co | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4517 | 035 | 1469 | 0639-93250 |
1997/01/22 | Abstract for section 7 & tables 7-1, 7-2, 7-2a, 7-3 & 7-3a of joint gw FS, w/marginalia & TLs | McLaren Hart Environmental Engineering Corp | Environmental Protection Agency - Region 9 | 4518 | 035 | 1472 | 0639-03711 |
1997/01/22 | Modified draft response to final installment EPA comments on draft Del Amo gw RI rpt, w/TL to J Dhont fr E Weaver | Dames & Moore | Environmental Protection Agency - Region 9 | 4519 | 035 | 1484 | 0639-03763 |
1997/01/22 | Table for gw RI comments, w/fax TL to J Dudley fr J Dhont | - | - | 4520 | 035 | 1491 | 0639-93242 |
1997/01/22 | Map: Hydraulic isolation zone plot for C-Sand (draft), w/TL to S Acree fr T Leo | Hargis & Assoc, Inc | - | 4521 | 035 | 1495 | 0639-93251 |
1997/01/23 | Memo: Comments on 1/9/97 immunoassay method detection limit (MDL) study, NW corner sampling, w/TL to J Dhont fr H Nezafati | Hooshang Nezafati / C H 2 M Hill | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4522 | 035 | 1498 | 0639-93381 |
1997/01/24 | Ltr: Workplan to conduct para-chlorobenzene sulfonic acid (p-CBSA) carbon treatability study, w/attch & TLs | Douglas Jones / McLaren Hart Environmental Engineering Corp | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4523 | 035 | 1501 | 0639-03387 |
1997/01/24 | Technical memo: Field oversight of MW-20 extraction system pilot testing - installation of new treatment system components, w/attch | Hooshang Nezafati / C H 2 M Hill | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4524 | 035 | 1514 | 0639-93318 |
1997/01/24 | Memo: National remedy review board statement | Jeffrey Dhont / Environmental Protection Agency - Region 9 | Frank Bachman / Montrose Chemical Corp | 4525 | 035 | 1517 | 0639-94095 |
1997/01/28 | Ltr: Discusses EPA position on recovery/treatment of dense non-aqueous phase liquids (DNAPL) & evaluates whether existing NAPL docs can serve as FS | Jeffrey Dhont / Environmental Protection Agency - Region 9 | Frank Bachman / Montrose Chemical Corp | 4526 | 035 | 1519 | 0639-02323 |
1997/01/28 | Abstract for section 8.0 & tables 8-2 & 8-2a of joint gw FS, w/marginalia & TL to J Dhont fr J Morabito | McLaren Hart Environmental Engineering Corp | Environmental Protection Agency - Region 9 | 4527 | 035 | 1527 | 0639-03712 |
1997/01/29 | Mtg agenda: Proposed plan public comment mtg, w/handwritten notes, overheads & handouts | Dante Rodriguez / Environmental Protection Agency - Region 9 | - | 4528 | 035 | 1536 | 0639-04907 |
1997/01/29 | Presentation visuals for public mtg on waste pits | Jeffrey Dhont / Environmental Protection Agency - Region 9 | - | 4529 | 035 | 1555 | 0639-93319 |
1997/01/30 | Cost estimates for Del Amo RA alternatives, gw FS, w/TL to J Dhont fr M Schultheis | Dames & Moore | Environmental Protection Agency - Region 9 | 4530 | 035 | 1558 | 0639-03714 |
1997/01/31 | Article: Demonstration of cleanup technology for liquids yields promising results (BNA Environment Reporter, v27, 2012-3), w/TL fr S O'Rourke, 2/10/97 | Environment Reporter | - | 4531 | 035 | 1567 | 0639-92474 |
1997/02/01 | Proposed plan information fr Simpson Environmental, w/TLs | Simpson Environmental | - | 4532 | 035 | 1571 | 0639-02117 |
1997/02/04 | Draft interim submittal, joint gw model remedial simulation results, w/TL to J Dhont fr M Zhu | Dames & Moore | - | 4533 | 035 | 1743 | 0639-03416 |
1997/02/04 | Memo: Additional review of potentiometric gw elevation countour cross sections in draft Del Amo gw RI rpt, w/TL to J Dhont fr H Nezafati, 2/5/97 | Hooshang Nezafati / C H 2 M Hill | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4534 | 035 | 1998 | 0639-94509 |
1997/02/05 | 2nd installment EPA comments on 10/22/96 draft Del Amo gw RI rpt (AOC #92-13), w/TL to C Paine fr J Dhont | Environmental Protection Agency - Region 9 | Shell Oil Co | 4535 | 035 | 2002 | 0639-93243 |
1997/02/05 | Memo: Request for memo documenting review of natural attenuation arguments of gw RI for Del Amo | Jeffrey Dhont / Environmental Protection Agency - Region 9 | Steve Acree / Environmental Protection Agency - Robert S Kerr Environmental Research Laboratory | 4536 | 035 | 2007 | 0639-94096 |
1997/02/06 | Ltr: Discusses & transmits draft model results for Montrose/Del Amo, w/attchs | Timothy Leo / Hargis & Assoc, Inc | Steve Acree / Environmental Protection Agency - Robert S Kerr Environmental Research Laboratory | 4537 | 035 | 2009 | 0639-03715 |
1997/02/06 | Ltr: Transmits request for environmental monitoring to assess exposures of residents living adjacent to Del Amo/Montrose sites w/encl (health) | Dean Baker / Univ of California, Irvine | William Nelson / US Dept of Health & Human Services - Agency for Toxic Substances & Disease Registry | 4538 | 035 | 2033 | 0639-04782 |
1997/02/06 | Ltr: Announces 2/25/97-2/26/97 interagency/stakeholder mtg, w/2/4/97 ltr fr Del Amo Action Committee supporting partnership | William Nelson / US Dept of Health & Human Services - Agency for Toxic Substances & Disease Registry | Michael Montgomery / Environmental Protection Agency - Region 9 | 4539 | 035 | 2065 | 0639-93306 |
1997/02/06 | Memo: Supplementary forecast 2/17/97 - 2/28/97 w/TL (MW-20) | John Dudley / Dames & Moore | Dante Rodriguez / Environmental Protection Agency - Region 9 | 4540 | 035 | 2069 | 0639-94124 |
1997/02/06 | Ltr: Announces 2/25/97-2/26/97 interagency/stakeholder mtg | William Nelson / US Dept of Health & Human Services - Agency for Toxic Substances & Disease Registry | Dante Rodriguez / Environmental Protection Agency - Region 9 | 4541 | 035 | 2072 | 0639-94202 |
1997/02/11 | Ltr: Comments on potentiometric elevation cross-section contours in draft gw RI, w/attch & fax TL to J Dudley fr J Dhont | Jeffrey Dhont / Environmental Protection Agency - Region 9 | John Dudley / Dames & Moore | 4542 | 035 | 2075 | 0639-93244 |
1997/02/12 | Memo: Review of cost estimates for Del Amo gw remedial alternatives, w/TL header | Hooshang Nezafati / C H 2 M Hill | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4543 | 035 | 2079 | 0639-94098 |
1997/02/13 | Public comments to waste pits proposed plan, 12/11/96-2/13/97, including 1/29/97 public mtg transcript & notes | - | Environmental Protection Agency - Region 9 | 4544 | 035 | 2081 | 0639-02114 |
1997/02/14 | Memo: Comments on draft gw model summary & simulation results | Steve Acree / Environmental Protection Agency - National Risk Management Research Laboratory | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4545 | 035 | 2206 | 0639-91326 |
1997/02/19 | Ltr: Transmits risk assessment approach & preliminary results for joint gw risk calculations, w/attchs | Douglas Jones / McLaren Hart Environmental Engineering Corp | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4546 | 035 | 2211 | 0639-03724 |
1997/02/19 | Memo: Comments on chapter 6, contaminant fate & mobility, of draft gw RI rpt, w/rtg slip to J Dhont fr D Draper | Steven Acree / Environmental Protection Agency - Office of Research & Development | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4547 | 035 | 2371 | 0639-93274 |
1997/02/19 | Mtg agenda: Interagency/stakeholder partnering workshop, 2/25/97 & 2/26/97, w/TL to J Dhont fr W Nelson | US Dept of Health & Human Services - Agency for Toxic Substances & Disease Registry | - | 4548 | 035 | 2375 | 0639-93388 |
1997/02/20 | Health consultation - infant health implications of breastfeeding when considering maternal serum DDT levels | CA Dept of Health Services | - | 4549 | 035 | 2379 | 0639-03543 |
1997/02/21 | Memo: Del Amo field oversight of gw monitoring prog, 3rd period 1996 sampling event, 10/11/96-10/16/96, w/attch & TL to J Dhont fr H Nezafati, 2/24/97 | Hooshang Nezafati / C H 2 M Hill | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4550 | 035 | 2395 | 0639-03388 |
1997/02/21 | Ltr: Proposed scope of model sensitivity analysis for joint gw model, w/attch & TL to J Dhont fr R Niemeyer | David Hargis / Hargis & Assoc, Inc | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4551 | 035 | 2403 | 0639-03428 |
1997/02/21 | Section 5.0 of joint gw FS, w/TL to J Dhont fr J Morabito | McLaren Hart Environmental Engineering Corp | Environmental Protection Agency - Region 9 | 4552 | 035 | 2413 | 0639-03716 |
1997/02/21 | Figures - monochlorobenzene (MCB) concentration contours, w/marginalia & TL to J Dhont fr N Raykhman | C H 2 M Hill | - | 4553 | 035 | 2492 | 0639-93275 |
1997/02/21 | Remedial action objectives (draft), w/marginalia & TL to J Dhont fr J Morabito | J Morabito / McLaren Hart Environmental Engineering Corp | - | 4554 | 035 | 2498 | 0639-93286 |
1997/02/24 | Montrose natural attenuation study (phase I), w/errors ltr, 3/10/97, & TL to J Dhont fr F Bachman, 4/9/97 | A Gray / Zeneca Inc | Montrose Chemical Corp | 4555 | 035 | 2501 | 0639-03678 |
1997/02/24 | Remedial action objectives (RAOs) & possible alternatives for eastern benzene, w/TLs to M Schultheis & J Morabito fr J Dhont | Environmental Protection Agency - Region 9 | - | 4556 | 035 | 2539 | 0639-93287 |
1997/02/24 | Email: Assessment of para-chlorobenzene sulfonic acid (p-CBSA), w/forward to J Dhont fr S Smucker | Harlal Choudhury / Environmental Protection Agency - National Center for Environmental Assessment | Stanford Smucker / Environmental Protection Agency - Region 9 | 4557 | 035 | 2544 | 0639-93367 |
1997/02/25 | Ltr: Reviews McDonnell Douglas final phase 2 subsurface inves, phase 2 FSP & workplan for post remediation confirmation soil sampling (file 100.315) | J Ross / CA Regional Water Quality Control Board - Los Angeles Basin Region | Michael Young / Integrated Environmental Services | 4558 | 035 | 2546 | 0639-93234 |
1997/02/25 | Ltr: Modification to sampling locations, NW corner sampling program, w/TL to J Dhont fr J Heiser | Douglas Jones / McLaren Hart Environmental Engineering Corp | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4559 | 035 | 2552 | 0639-93380 |
1997/02/25 | Mtg agenda (draft): Review of phase 1 RI & potential areas for phase 2 RI work, 2/27/97, w/fax TL to D Rodriguez fr J Dudley | Dames & Moore | - | 4560 | 035 | 2556 | 0639-94212 |
1997/02/26 | Method detection limit (MDL) study for immunoassay analysis for DDT in soil, w/TLs to J Dhont fr S Carlton, 3/7/97 | Inchcape Testing Services Environmental Laboratories | - | 4561 | 035 | 2559 | 0639-02324 |
1997/02/27 | Data validation rpt: Case #25274, memo #1, 2 low level gw samples for volatiles, collected 1/17/97, w/TL to J Dhont fr J Berges | Margaret May / Lockheed Martin Environmental Services | Environmental Protection Agency - Region 9 | 4562 | 035 | 2566 | 0639-03400 |
1997/02/27 | Quarterly project mtg handouts, including list of key RI docs, criteria for eval of deep soil gas profiles & 6 figs (phase 2 RI) | Dames & Moore | - | 4563 | 036 | 0001 | 0639-04872 |
1997/02/27 | Figures - benzene concentration contours for 3/97 draft joint gw FS, w/marginalia | Dames & Moore | - | 4564 | 036 | 0016 | 0639-93276 |
1997/02/27 | RI rpt distribution list, w/TL to J Dhont fr M Palmer | Hargis & Assoc, Inc | - | 4565 | 036 | 0019 | 0639-93363 |
1997/02/28 | Ltr: Status & performance summary for MW-20 hydraulic extraction pilot program (AOC 92-13) w/attchs | Chuck Paine / Shell Chemical Co | Cynthia Wetmore / Environmental Protection Agency - Region 9 | 4566 | 036 | 0022 | 0639-03316 |
1997/02/28 | Ltr: Conceptual plan for dense non-aqueous phase liquid (DNAPL) testing & evaluation in support of FS, w/TL to J Dhont fr D Hargis & M Palmer | Michael Palmer / Hargis & Assoc, Inc | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4567 | 036 | 0051 | 0639-03326 |
1997/02/28 | Memo: Comments on draft Del Amo gw RI rpt, w/TLs to J Dhont fr P Garcia, 3/21/97 | Kim Christmann / CA Environmental Protection Agency - Dept of Toxic Substances Control | Peter Garcia / CA Environmental Protection Agency - Dept of Toxic Substances Control | 4568 | 036 | 0060 | 0639-03417 |
1997/02/28 | Memo: Comments on 10/22/96 draft gw RI rpt, w/marginalia & TL to J Dhont fr P Garcia, 3/21/97 | Kim Christmann / CA Environmental Protection Agency - Dept of Toxic Substances Control | Peter Garcia / CA Environmental Protection Agency - Dept of Toxic Substances Control | 4569 | 036 | 0072 | 0639-03661 |
1997/02/28 | Ltr: Conceptual plan for additional testing & evaluation of DNAPL in support of DNAPL FS, Montrose | David Hargis / Hargis & Assoc, Inc | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4570 | 036 | 0083 | 0639-03771 |
1997/02/28 | Technical memo: Review of Del Amo/Montrose numerical model & preliminary simulation results, w/marginalia (mw-20) | Hooshang Nezafati / C H 2 M Hill | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4571 | 036 | 0091 | 0639-92136 |
1997/03/00 | Hydrous pyrolysis/oxidation, in-ground thermal destruction of organic contaminants (American Institute of Chemical Engineers Spring Mtg, 3/10-12/97) | Kevin Knauss | - | 4572 | 036 | 0097 | 0639-03792 |
1997/03/00 | Dumping pump & treat, rapid cleanups using thermal technology (American Institute of Chemical Engineers Spring Mtg, 3/10-12/97) | Robin Newmark | - | 4573 | 036 | 0120 | 0639-03793 |
1997/03/03 | Ltr: Imminent schedule deadlines & DTSC activities related to gw OU ROD | Jeffrey Dhont / Environmental Protection Agency - Region 9 | Peter Garcia / CA Environmental Protection Agency - Dept of Toxic Substances Control | 4574 | 036 | 0147 | 0639-93288 |
1997/03/03 | Ltr: Recommendation for gw cleanup standard for para-chlorobenzene sulfonic acid (p-CBSA) [file #100.315] | J Ross / CA Regional Water Quality Control Board - Los Angeles Basin Region | Hamid Saebfar / CA Environmental Protection Agency - Dept of Toxic Substances Control | 4575 | 036 | 0151 | 0639-93289 |
1997/03/05 | Section 6.0 of joint gw FS, w/TL to J Dhont fr J Morabito | McLaren Hart Environmental Engineering Corp | Environmental Protection Agency - Region 9 | 4576 | 036 | 0153 | 0639-03713 |
1997/03/06 | Results for volatile organic compounds analysis - case #R97S20, low level water samples, w/TL to J Dhont fr B Bettencourt, 3/10/97 | Environmental Protection Agency - Region 9 Laboratory | - | 4577 | 036 | 0169 | 0639-03405 |
1997/03/06 | Cost estimates for CB/B plume alternatives, gw FS, Montrose, w/TLs to J Dhont fr J Morabito | McLaren Hart Environmental Engineering Corp | Environmental Protection Agency - Region 9 | 4578 | 036 | 0176 | 0639-03717 |
1997/03/06 | Sensitivity analysis of benzene transport model (draft), w/TL to J Dhont fr M Zhu | Dames & Moore | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4579 | 036 | 0185 | 0639-93277 |
1997/03/07 | Ltr: Detailed description of state ARARs not addressed in 12/10/96 final focused FS (FFS) rpt (ROD file) | Haissam Salloum / CA Environmental Protection Agency - Dept of Toxic Substances Control | Dante Rodriguez / Environmental Protection Agency - Region 9 | 4580 | 036 | 0189 | 0639-94312 |
1997/03/10 | Memo: Response to inquiry on voucher dated 3/3/97 | Hooshang Nezafati / C H 2 M Hill | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4581 | 036 | 0194 | 0639-92049 |
1997/03/11 | Ltr: Per EPA verbal approval, commencing work on sensitivity analysis | Michael Palmer / Hargis & Assoc, Inc | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4582 | 036 | 0196 | 0639-93290 |
1997/03/13 | Public health assessment | CA Dept of Health Services | - | 4583 | 036 | 0198 | 0639-02319 |
1997/03/13 | Mtg agenda (draft): EPA/Montrose monthly status mtg, 3/19/97, w/TL to J Dhont fr M Palmer | Hargis & Assoc, Inc | - | 4584 | 036 | 0340 | 0639-93360 |
1997/03/13 | Briefing on dual-site gw OU remedy in preparation for 4/22/97-4/23/97 National Remedy Review Board (NRRB) mtg (mw-20) | - | Keith Takata / Environmental Protection Agency - Region 9 | 4585 | 036 | 0344 | 0639-94073 |
1997/03/14 | Remedial action objectives (RAOs) for joint gw FS, w/TLs to J Dhont fr J Morabito | J Morabito / McLaren Hart Environmental Engineering Corp | - | 4586 | 036 | 0351 | 0639-93291 |
1997/03/16 | Memo: Update of QAPP specifications w/TL header | Artemis Antipas / C H 2 M Hill | Hooshang Nezafati / C H 2 M Hill | 4587 | 036 | 0356 | 0639-94099 |
1997/03/17 | Ltr: Finalized review of draft phase 2 FSP for McDonnell Douglas C-6 facility, w/o attchs (file 100.315) | J Ross / CA Regional Water Quality Control Board - Los Angeles Basin Region | Michael Young / Integrated Environmental Services | 4588 | 036 | 0358 | 0639-93235 |
1997/03/17 | Memo: Field oversight activities during site investigation of NW corner, 3/10/97-3/13/97 | Hooshang Nezafati / C H 2 M Hill | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4589 | 036 | 0361 | 0639-93382 |
1997/03/18 | Memo: Studies on p-CBSA (para-chlorobenzene sulfonic acid) w/TL header | Louise Brogan / Environmental Protection Agency - Office of Research & Development | Stanford Smucker / Environmental Protection Agency - Region 9 | 4590 | 036 | 0364 | 0639-94100 |
1997/03/19 | TEG mobile laboratories field inspection rpt, w/attchs & TL to M Stavale fr J Ross | CA Regional Water Quality Control Board - Los Angeles Basin Region | - | 4591 | 036 | 0366 | 0639-03349 |
1997/03/19 | Revised text of operational history & stormwater pathway sections of draft Montrose RI | Environmental Protection Agency | Montrose Chemical Corp | 4592 | 036 | 0395 | 0639-03676 |
1997/03/19 | Revised text of chapter 5 of draft Montrose RI - source discussion modifications & additions | Environmental Protection Agency | Montrose Chemical Corp | 4593 | 036 | 0482 | 0639-03677 |
1997/03/19 | Cost estimates for 104 gpm extraction alternative, gw FS, Del Amo, w/TL to J Dhont fr M Schultheis | Dames & Moore | Environmental Protection Agency - Region 9 | 4594 | 036 | 0490 | 0639-03718 |
1997/03/19 | Mtg agenda: EPA/Montrose monthly status mtg, w/10/30/72 aerial photo, fig 1-6N | Hargis & Assoc, Inc | - | 4595 | 036 | 0498 | 0639-93361 |
1997/03/20 | Operational history section of RI rpt (draft), w/TL to K Lytz fr J Dhont | - | - | 4596 | 036 | 0505 | 0639-03636 |
1997/03/22 | Ltr: Setting up 1st mtg of steering committee (partnering), w/fax TL to D Rodriguez fr C Babich, 3/23/97 | Cynthia Babich / Del Amo Action Committee | - | 4597 | 036 | 0512 | 0639-94203 |
1997/03/24 | Ltr: Transmits interpretive rpt for 2/25-2/26 Del Amo/Montrose community interagency partnering mtg & stakeholders list, w/attchs & storyboard notes | William Nelson / US Dept of Health & Human Services - Agency for Toxic Substances & Disease Registry | Michael Montgomery / Environmental Protection Agency - Region 9 | 4598 | 036 | 0515 | 0639-03419 |
1997/03/24 | Memo: Comments on additional testing & evaluation of DNAPL in support of DNAPL FS, Montrose site, w/TL to J Dhont fr H Nezafati, 3/31/97 | Hooshang Nezafati / C H 2 M Hill | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4599 | 036 | 0538 | 0639-93562 |
1997/03/24 | Memo: Comments on additional testing & evaluation of DNAPL in support of DNAPL FS, Montrose (e-mail version) | Hooshang Nezafati / C H 2 M Hill | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4600 | 036 | 0542 | 0639-93564 |
1997/03/24 | Memo: National Remedy Review Board (NRRB) deliberation checklist | John Kemmerer / Environmental Protection Agency - Region 9 | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4601 | 036 | 0545 | 0639-94510 |
1997/03/25 | Ltr: Transmits docs re chlorinated compounds in soil & gw at Amoco Chemical Co & Trico Industries (AOC #92-13), w/attchs & marginalia | Chuck Paine / Shell Oil Co | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4602 | 036 | 0548 | 0639-00237 |
1997/03/25 | Memo: Transmits Remedy Review Board position paper on Del Amo gw remedy & technology cost estimates, w/encls | Mark Schultheis / Dames & Moore | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4603 | 036 | 0583 | 0639-03418 |
1997/03/25 | Preliminary draft cancer risk & non-cancer hazard index calculations for B-Sand benzene plume, w/TL to J Dhont fr J Kester | Dames & Moore | - | 4604 | 036 | 0591 | 0639-03719 |
1997/03/25 | Ltr: Response to request for information re state determination for DDT-contamination soils & sediments, w/encls | Greg Holmes / CA Environmental Protection Agency - Dept of Toxic Substances Control | Michael Montgomery / Environmental Protection Agency - Region 9 | 4605 | 036 | 0628 | 0639-93371 |
1997/03/26 | Ltr: Comments on condition of gw problem & remedy (corrected version), w/initial version & TLs | Cynthia Babich / Del Amo Action Committee | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4606 | 036 | 0632 | 0639-03429 |
1997/03/26 | Comments on 2/11/97 draft workplan to conduct treatability study for removal of DDT-impacted sediment fr portion of JO"D" line, w/TL to J Heiser | Environmental Protection Agency - Region 9 | McLaren Hart Environmental Engineering Corp | 4607 | 036 | 0639 | 0639-92059 |
1997/03/27 | Statements fr Del Amo Action Committee, Del Amo Respondents & Montrose Chemical, w/regional gw source map | - | - | 4608 | 036 | 0644 | 0639-03432 |
1997/03/27 | Memo: Review of proposed scope of model sensitivity analysis | Steve Acree / Environmental Protection Agency - National Risk Management Research Laboratory | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4609 | 036 | 0664 | 0639-92137 |
1997/03/27 | Memo: Montrose sensitivity analyses | Steve Acree / Environmental Protection Agency - Robert S Kerr Environmental Research Laboratory | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4610 | 036 | 0667 | 0639-94101 |
1997/03/27 | Ltr: Requests feedback on conference overview & discusses steering committee mtg on 4/2/97 (partnering) | Cynthia Babich / Del Amo Action Committee | - | 4611 | 036 | 0669 | 0639-94206 |
1997/03/31 | Data validation rpt: Case #25295, memo #1, 7 low level gw samples, collected 1/27/97, 2/4/97 & 2/5/97, w/addition & TL to J Dhont fr J Berges | Adriane Scheele / Lockheed Martin Environmental Services | Environmental Protection Agency - Region 9 | 4612 | 036 | 0671 | 0639-03401 |
1997/03/31 | Remedial action objectives (RAOs), w/TL to J Morabito & D Jones fr J Dhont | Environmental Protection Agency - Region 9 | - | 4613 | 036 | 0703 | 0639-93292 |
1997/03/31 | Memo: Transmits 10/96 schematic of Montrose plant & surrounding property & 10/1/68 cross section of Kenwood Ave drain, south segment, w/attchs | Jeffrey Dhont / Environmental Protection Agency - Region 9 | Peter Torrey / C H 2 M Hill | 4614 | 036 | 0706 | 0639-94507 |
1997/04/00 | National Remedy Review Board (NRRB) information package for dual site gw OU | Jeffrey Dhont / Environmental Protection Agency - Region 9 | - | 4615 | 036 | 0712 | 0639-03433 |
1997/04/00 | Map: Plant surface drainage, figure 1.11 (draft), w/TL to J Dhont fr P Torrey, 5/27/97 | C H 2 M Hill | - | 4616 | 036 | 0770 | 0639-92112 |
1997/04/00 | Flier - recent evidence of people exposed to hazardous substances at Superfund sites | US Dept of Health & Human Services - Agency for Toxic Substances & Disease Registry | - | 4617 | 036 | 0774 | 0639-93202 |
1997/04/00 | Fact sheet: Workshop announcement - gw study results (in English & Spanish) | Environmental Protection Agency - Region 9 | - | 4618 | 036 | 0777 | 0639-93294 |
1997/04/01 | Internal deadlines for remaining sections of FS, w/marginalia & TLs | Jeffrey Dhont / Environmental Protection Agency - Region 9 | - | 4619 | 036 | 0780 | 0639-92103 |
1997/04/01 | Drawing: Mock-up of treatment trains w/TL to H Nezafati fr J Dhont | Jeffrey Dhont / Environmental Protection Agency - Region 9 | - | 4620 | 036 | 0786 | 0639-94358 |
1997/04/02 | Tables & map of wells in Montrose/Del Amo study area, w/TL to J Dhont fr G Fates, 4/21/97 | Dames & Moore | - | 4621 | 036 | 0789 | 0639-03392 |
1997/04/02 | Table of Montrose documents for RI operations history | Jeffrey Dhont / Environmental Protection Agency - Region 9 | - | 4622 | 036 | 0803 | 0639-03772 |
1997/04/04 | Draft joint gw FS, w/TL to J Dhont fr J Morabito | Hargis & Assoc, Inc | Montrose Chemical Corp | 4623 | 036 | 0818 | 0639-03329 |
1997/04/04 | Remedial action objectives (RAOs), w/marginalia & TLs to J Dudley & J Morabito fr J Dhont | Environmental Protection Agency - Region 9 | - | 4624 | 036 | 1312 | 0639-93293 |
1997/04/07 | Ltr: Deadline for draft joint gw FS, w/TLs | Jeffrey Dhont / Environmental Protection Agency - Region 9 | Frank Bachman / Montrose Chemical Corp | 4625 | 036 | 1316 | 0639-03430 |
1997/04/07 | Remedial action objectives, w/TL to J Dhont fr J Morabito | J Morabito / McLaren Hart Environmental Engineering Corp | - | 4626 | 036 | 1326 | 0639-93278 |
1997/04/08 | EPA comments on Del Amo draft gw RI rpt requiring discussion, w/TL to J Dhont fr G Fates | Dames & Moore | - | 4627 | 036 | 1329 | 0639-93245 |
1997/04/08 | Memo: Approves proposed change to remedial action objectives (RAOs) | Jeffrey Dhont / Environmental Protection Agency - Region 9 | J Morabito / McLaren Hart Environmental Engineering Corp | 4628 | 036 | 1334 | 0639-93295 |
1997/04/10 | Data validation rpt: Case #R97S20, 5 low level water samples, collected 1/16/97 & 1/27/97, w/TL to J Dhont fr D Richmond | Dawn Richmond / Environmental Protection Agency - Region 9 | Environmental Protection Agency - Region 9 | 4629 | 036 | 1336 | 0639-03399 |
1997/04/14 | 3rd installment EPA comments on 10/22/96 draft Del Amo gw RI rpt (AOC #92-13), w/TLs | Environmental Protection Agency - Region 9 | Shell Oil Co | 4630 | 036 | 1351 | 0639-03391 |
1997/04/14 | Ltr: Transmits 3rd installment EPA comments on draft Del Amo gw RI rpt & summarizes EPA actions with respect to each comment, w/o encl | Jeffrey Dhont / Environmental Protection Agency - Region 9 | Peter Garcia / CA Environmental Protection Agency - Dept of Toxic Substances Control | 4631 | 036 | 1360 | 0639-93252 |
1997/04/15 | Mtg agenda (draft): Del Amo phase 2 RI planning mtg #2, 4/17/97-4/18/97, w/sign-in sheets & fax TLs fr J Dudley | Dames & Moore | - | 4632 | 036 | 1365 | 0639-93246 |
1997/04/15 | Table 8-2, process option cost factors for CB/B plume (draft), w/TL to J Dhont fr J Morabito | McLaren Hart Environmental Engineering Corp | - | 4633 | 036 | 1372 | 0639-93279 |
1997/04/16 | Ltr: Transmits requested background docs, w/encls & fax TL | Jeffrey Dhont / Environmental Protection Agency - Region 9 | Karl Lytz / Latham & Watkins (Attorneys) | 4634 | 036 | 1375 | 0639-03341 |
1997/04/16 | Table 8-2, process option cost factors for CB/B plume & B plume (draft), w/TL to J Dhont fr J Morabito | McLaren Hart Environmental Engineering Corp | - | 4635 | 036 | 1397 | 0639-93280 |
1997/04/16 | Mtg agenda: Dual site OU for gw, EPA-state of CA mtg, 4/17/97, w/attendee list & TL to P Garcia fr J Dhont | Environmental Protection Agency - Region 9 | - | 4636 | 036 | 1400 | 0639-93296 |
1997/04/17 | Presentation for public workshop on gw | Jeffrey Dhont / Environmental Protection Agency - Region 9 | - | 4637 | 036 | 1404 | 0639-03431 |
1997/04/17 | Overheads for public workshop on gw, w/TL to C Babich fr J Dhont, 5/14/97 | Jeffrey Dhont / Environmental Protection Agency - Region 9 | - | 4638 | 036 | 1439 | 0639-03662 |
1997/04/17 | Invoice: Matrix visual solutions, w/TL fr J Dhont to M Embree 4/21/97 | Matrix Visual Solutions | Kim Russart / C H 2 M Hill | 4639 | 036 | 1458 | 0639-92056 |
1997/04/17 | Sign-in sheet for dual site OU for gw, EPA-state of CA mtg | - | - | 4640 | 036 | 1461 | 0639-93297 |
1997/04/20 | Memo: Literature review re biological degradation of monochlorobenzene (MCB), joint gw FS, w/marginalia & TL header, 4/21/97 | Hooshang Nezafati / C H 2 M Hill | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4641 | 036 | 1463 | 0639-94076 |
1997/04/20 | Memo: Biodegradation of MCB (monochlorobenzene) w/TL header | Hooshang Nezafati / C H 2 M Hill | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4642 | 036 | 1467 | 0639-94102 |
1997/04/21 | Revised draft of operational history of Montrose plant for RI/FS, w/marginalia & TLs to J Lyons & J Dhont fr S Case | Latham & Watkins (Attorneys) | Environmental Protection Agency - Region 9 | 4643 | 036 | 1471 | 0639-03773 |
1997/04/22 | Ltr: Review of 2/28/97 status & performance summary for MW-20 hydraulic extraction pilot program (AOC #92-13) (mw-20) | Cynthia Wetmore / Environmental Protection Agency - Region 9 | Chuck Paine / Shell Oil Co | 4644 | 036 | 1526 | 0639-93247 |
1997/04/23 | TL: Health consultation - infant health implications of breastfeeding when considering maternal serum DDT levels & public health assessment | William Nelson / US Dept of Health & Human Services - Agency for Toxic Substances & Disease Registry | Dante Rodriguez / Environmental Protection Agency - Region 9 | 4645 | 036 | 1529 | 0639-94134 |
1997/04/24 | Ltr: Issues raised by C Babich re Montrose public health assessment | Sherry Chan / CA Dept of Health Services - Environmental Health Investigations Branch | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4646 | 036 | 1531 | 0639-92117 |
1997/04/25 | Ltr: Transmits 4/3/97 steering committee mtg minutes & discusses next mtg, w/attch, marginalia & TL, 4/28/97 | Cynthia Babich / Del Amo Action Committee | William Nelson / US Dept of Health & Human Services - Agency for Toxic Substances & Disease Registry | 4647 | 036 | 1533 | 0639-03663 |
1997/04/25 | Ltr: Transmits 4/3/97 steering committee mtg minutes & interpretive rpt & announces 6/16/97 partnership mtg, w/o rpt, w/minutes & mailing list | William Nelson / US Dept of Health & Human Services - Agency for Toxic Substances & Disease Registry | - | 4648 | 036 | 1541 | 0639-03664 |
1997/04/25 | Ltr: Response to comments in 12/11/96 DTSC ltr on 9/4/96 draft focused FS (FFS) rpt, w/o attch, w/marginalia & fax TL (ROD file) | Chuck Paine / Shell Oil Co | Dante Rodriguez / Environmental Protection Agency - Region 9 | 4649 | 036 | 1557 | 0639-04891 |
1997/04/25 | Ltr: Response to comments in 12/11/96 DTSC ltr on 9/4/96 draft focused FS (FFS) rpt, w/o attch (ROD file) | Chuck Paine / Shell Oil Co | Dante Rodriguez / Environmental Protection Agency - Region 9 | 4650 | 036 | 1564 | 0639-94313 |
1997/04/28 | Draft supplement to joint gw risk assessment (found in 4/93 final draft PHEE), w/TL to J Dhont fr D Shelton | C H 2 M Hill | Environmental Protection Agency | 4651 | 036 | 1570 | 0639-03680 |
1997/04/28 | Ltr: State ARARs, waste pit area, w/marginalia & TL header to D Rodriguez fr G Conti (ROD file) | CA Environmental Protection Agency - Dept of Toxic Substances Control | - | 4652 | 036 | 1745 | 0639-94518 |
1997/05/00 | Draft joint gw risk assessment, w/marginalia | McLaren Hart Environmental Engineering Corp | Montrose Chemical Corp | 4653 | 036 | 1750 | 0639-03795 |
1997/05/00 | Article: Natural attenuation - in situ methods are viable way of remediating soil & gw (Environmental protection, pp 25,28-29) | Deborah Tremblay / Environmental Protection Agency | Peter Feldman / Environmental Protection Agency | 4654 | 036 | 2197 | 0639-94332 |
1997/05/01 | Montrose Chemical rewrite of chapter 5 of draft Montrose RI - source discussion modifications & additions, w/marginalia & TL fr S Case | Montrose Chemical Corp | Environmental Protection Agency | 4655 | 036 | 2201 | 0639-03681 |
1997/05/01 | Memo: re inquiry on monthly progress rpt for 3/97 | Hooshang Nezafati / C H 2 M Hill | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4656 | 036 | 2209 | 0639-92048 |
1997/05/02 | TL: Montrose Chemical proposal for natural attenuation study for monochlorobenzene (MCB) | Jeffrey Dhont / Environmental Protection Agency - Region 9 | Steve Acree / Environmental Protection Agency - Robert S Kerr Environmental Research Laboratory | 4657 | 036 | 2211 | 0639-93281 |
1997/05/02 | Fig 7.4.1-1, missing fr 4/25/97 response to comments in 12/11/96 DTSC ltr on 9/4/96 draft FFS rpt, w/TL to D Rodriguez fr C Paine (ROD file) | Dames & Moore | - | 4658 | 036 | 2213 | 0639-94314 |
1997/05/05 | Memo: Transmits draft TL for final Del Amo gw RI rpt & draft response to comments package (AOC #92-13), w/attchs | John Dudley / Dames & Moore | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4659 | 036 | 2216 | 0639-03393 |
1997/05/06 | Revised table 5 for draft supplement to joint gw risk assessment | C H 2 M Hill | Environmental Protection Agency | 4660 | 036 | 2261 | 0639-93574 |
1997/05/07 | Notes on proposed ARARs fr DTSC, w/marginalia (ROD file) | Dante Rodriguez / Environmental Protection Agency - Region 9 | - | 4661 | 036 | 2263 | 0639-94519 |
1997/05/13 | Proposal for expanded study of natural attenuation, Montrose (draft), w/TLs | Zeneca Inc | Frank Bachman / Montrose Chemical Corp | 4662 | 036 | 2268 | 0639-03679 |
1997/05/13 | Summary table of 1,2-dibromoethane (EDB) results for gw, w/TL to J Dhont fr G Fates | Dames & Moore | - | 4663 | 036 | 2283 | 0639-93570 |
1997/05/14 | Memo: Review of chlorobenzene sulfonic acid data, w/TL to J Dhont fr S Smucker | Harlal Choudhury / Environmental Protection Agency - National Center for Environmental Assessment | Stanford Smucker / Environmental Protection Agency - Region 9 | 4664 | 036 | 2286 | 0639-92094 |
1997/05/15 | Mtg agenda: MW-20 hydraulic extraction treatability test (mw-20) | Environmental Protection Agency - Region 9 | - | 4665 | 036 | 2288 | 0639-92095 |
1997/05/16 | Draft joint gw FS, v1 of 2 (text, tables & figures), w/marginalia & TL to J Dhont fr J Morabito & S Gamette | Hargis & Assoc, Inc | Montrose Chemical Corp | 4666 | 036 | 2290 | 0639-03647 |
1997/05/16 | Draft joint gw FS, v2 of 2 (appendices) | Hargis & Assoc, Inc | Montrose Chemical Corp | 4667 | 037 | 0001 | 0639-03648 |
1997/05/16 | Focused shallow soil gas investigations, Metlife property, parcel #7351-33-24, w/TL to D Rodriguez fr C Paine (phase 2 RI) | Dames & Moore | - | 4668 | 037 | 0683 | 0639-03673 |
1997/05/16 | Revisions to wastewater section 1.3.11 of draft Montrose RI, w/marginalia & TL to K Lytz fr J Dhont | Jeffrey Dhont / Environmental Protection Agency - Region 9 | Montrose Chemical Corp | 4669 | 037 | 0693 | 0639-03682 |
1997/05/16 | Compact disks (2): Draft joint gw FS (media cabinet) | Hargis & Assoc, Inc | Montrose Chemical Corp | 4670 | 037 | 0705 | 0639-03805 |
1997/05/19 | Memo: Transmits 3/1/96 data summ pkg for Met Life property & discusses focused shallow soil gas investigations, w/attch & marginalia (phase 2 RI/FS) | Gib Fates / Dames & Moore | Dante Rodriguez / Environmental Protection Agency - Region 9 | 4671 | 037 | 0707 | 0639-03660 |
1997/05/19 | Ltr: Describes & transmits 3.5 in computer discs containing draft version of joint gw FS, w/attchs | Sean Gamette / McLaren Hart Environmental Engineering Corp | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4672 | 037 | 0718 | 0639-03783 |
1997/05/19 | Figures 5 & 6 & table 4-3 re DDT immunoassay at NW corner of former facility | McLaren Hart Environmental Engineering Corp | - | 4673 | 037 | 0727 | 0639-93869 |
1997/05/20 | Ltr: Transmits disc containing joint gw FS appendix B & section 4 tables & figures, & list of tables & figures, w/o disc, w/list | Ming Zhu / Dames & Moore | Hooshang Nezafati / C H 2 M Hill | 4674 | 037 | 0733 | 0639-03665 |
1997/05/20 | Memo: Discusses & transmits rewrite for RI rpt, w/o attch | Jeffrey Dhont / Environmental Protection Agency - Region 9 | Steve Case / Latham & Watkins (Attorneys) | 4675 | 037 | 0742 | 0639-92104 |
1997/05/20 | Mtg agenda (proposed): Torrance monthly project mtg, 5/21/97, w/TL to J Dhont fr P Sundberg | Montrose Chemical Corp | - | 4676 | 037 | 0744 | 0639-92107 |
1997/05/21 | Memo: Information re NY State Dept of Environmental Conservation (DEC) guidance on selection of RAs, w/attch | John Kemmerer / Environmental Protection Agency - Region 9 | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4677 | 037 | 0747 | 0639-92105 |
1997/05/22 | Ltr: Approves request presented in soil stockpile rpt for parcel A, rpt #2, at McDonnell Douglas C-6 facility | J Ross / CA Regional Water Quality Control Board - Los Angeles Basin Region | Michael Young / Integrated Environmental Services | 4678 | 037 | 0749 | 0639-92109 |
1997/05/22 | Ltr: Approves request presented in post-remedial excavation confirmation sample rpt for parcel A, rpt #2, at McDonnell Douglas C-6 facility | J Ross / CA Regional Water Quality Control Board - Los Angeles Basin Region | Michael Young / Integrated Environmental Services | 4679 | 037 | 0751 | 0639-92111 |
1997/05/23 | Preliminary analysis of CA ARARs for proposed joint gw remedy, w/TLs to J Dhont | CA Environmental Protection Agency - Dept of Toxic Substances Control | Environmental Protection Agency - Region 9 | 4680 | 037 | 0753 | 0639-03775 |
1997/05/23 | Ltr: Transmits compact disc of draft tables & figures for joint gw FS, & table of contents, w/o disc, w/table of contents | Roger Niemeyer / Hargis & Assoc, Inc | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4681 | 037 | 0761 | 0639-03784 |
1997/05/27 | Memo: Montrose Corp not using NY State Dept of Environmental Conservation (DEC) guidance on selection of RAs, w/attch | John Kemmerer / Environmental Protection Agency - Region 9 | John Lyons / Environmental Protection Agency - Region 9 | 4682 | 037 | 0781 | 0639-92106 |
1997/05/30 | Ltr: Approves request presented in soil stockpile rpt for parcel A, remedial excavation #5, at McDonnell Douglas C-6 facility | J Ross / CA Regional Water Quality Control Board - Los Angeles Basin Region | Michael Young / Integrated Environmental Services | 4683 | 037 | 0784 | 0639-92110 |
1997/06/02 | Deposition of Bernard Bratter, v1 of 3, USA v Montrose Chemical Corp, w/exhibits & index | Bernard Bratter | - | 4684 | 037 | 0786 | 0639-00633 |
1997/06/03 | Deposition of Bernard Bratter, v2 of 3, USA v Montrose Chemical Corp, w/exhibits & index | Bernard Bratter | - | 4685 | 037 | 0984 | 0639-00634 |
1997/06/03 | Ltr: Proposed initial investigation for Del Amo soil & NAPL RI (AOC #92-13), w/D Rodriguez handwritten notes & fax TL (phase 2 RI) | Chuck Paine / Shell Oil Co | Dante Rodriguez / Environmental Protection Agency - Region 9 | 4686 | 037 | 1091 | 0639-03961 |
1997/06/03 | TL: Draft supplement to joint gw risk assessment | Hooshang Nezafati / C H 2 M Hill | Gloria Conti / CA Environmental Protection Agency - Dept of Toxic Substances Control | 4687 | 037 | 1100 | 0639-92118 |
1997/06/03 | Memo: Comments on additional testing & evaluation of DNAPL, Montrose | Steve Acree / Environmental Protection Agency - National Risk Management Research Laboratory | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4688 | 037 | 1102 | 0639-93563 |
1997/06/04 | Deposition of Bernard Bratter, v3 of 3, USA v Montrose Chemical Corp, w/exhibits & index | Bernard Bratter | - | 4689 | 037 | 1105 | 0639-00635 |
1997/06/04 | Ltr: Discusses & transmits results of para-chlorobenzene sulfonic acid (p-CBSA) activated carbon treatability study, w/attch | Douglas Jones / McLaren Hart Environmental Engineering Corp | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4690 | 037 | 1351 | 0639-03657 |
1997/06/06 | Ltr: Status of gw monitoring program with respect to sampling & analyses of metals (AOC #92-13) | Chuck Paine / Shell Chemical Co | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4691 | 037 | 1420 | 0639-92119 |
1997/06/06 | Ltr: Status update for gw monitoring program & proposal to begin annual gw sampling frequency (AOC #92-13) | Chuck Paine / Shell Chemical Co | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4692 | 037 | 1423 | 0639-92120 |
1997/06/13 | Granular activated carbon-fluidized bed reactor (GAC-FBR) bench-scale treatability study, w/TL to J Dhont fr D Jones | McLaren Hart Environmental Engineering Corp | Environmental Protection Agency - Region 9 | 4693 | 037 | 1426 | 0639-02043 |
1997/06/13 | Soil FS outline (draft), w/TLs to J Dhont fr J Morabito | McLaren Hart Environmental Engineering Corp | - | 4694 | 037 | 1935 | 0639-03666 |
1997/06/13 | Ltr: Response to 2/28/97 ltr re additional testing of DNAPL in support of DNAPL FS, w/TLs | Jeffrey Dhont / Environmental Protection Agency - Region 9 | Frank Bachman / Montrose Chemical Corp | 4695 | 037 | 1943 | 0639-03667 |
1997/06/16 | Mtg agenda: Del Amo/Montrose partnership mtg, 6/16/97, w/handouts | Decker Assoc | - | 4696 | 037 | 1950 | 0639-03672 |
1997/06/16 | Mtg agenda (tentative): Torrance monthly project mtg, 6/18/97, w/TLs fr P Sundberg | Montrose Chemical Corp | Environmental Protection Agency - Region 9 | 4697 | 037 | 1990 | 0639-92108 |
1997/06/17 | Mtg agenda (tentative): Torrance project monthly mtg, 6/18/97, w/TL to J Dhont fr P Sundberg | Latham & Watkins (Attorneys) | - | 4698 | 037 | 1994 | 0639-94550 |
1997/06/18 | Mtg agenda: Torrance project monthly mtg, 6/18/97 | Latham & Watkins (Attorneys) | Environmental Protection Agency - Region 9 | 4699 | 037 | 1997 | 0639-92122 |
1997/06/19 | Ltr: Proposal to abandon well SWL0045 | Chuck Paine / Shell Chemical Co | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4700 | 037 | 1999 | 0639-92121 |
1997/06/20 | Draft response to comments on draft Del Amo gw RI rpt (AOC #92-13), w/marginalia & TL to J Dhont fr J Dudley, 12/11/97 | Shell Oil Co | Environmental Protection Agency - Region 9 | 4701 | 037 | 2001 | 0639-03765 |
1997/06/24 | Memo: National Remedy Review Board (NRRB) recommendations on Montrose & Del Amo, w/TL to J Kemmerer fr R Norris, 7/1/97 | Bruce Means / Environmental Protection Agency - Office of Solid Waste & Emergency Response | Keith Takata / Environmental Protection Agency - Region 9 | 4702 | 037 | 2048 | 0639-94512 |
1997/06/26 | Draft results of sensitivity analysis for joint gw flow & contaminant transport model, w/TL to J Dhont fr D Hargis | Hargis & Assoc, Inc | - | 4703 | 037 | 2052 | 0639-03659 |
1997/06/30 | Listing of data EPA has collected on Del Amo site in response to request by Partners Group, w/TL to W Nelson fr D Rodriguez | Environmental Protection Agency - Region 9 | William Nelson / US Dept of Health & Human Services - Agency for Toxic Substances & Disease Registry | 4704 | 037 | 2117 | 0639-03688 |
1997/06/30 | Quality assurance management plan, to be appended to RI/FS workplan dated 2/25/93 | Quanterra, Inc | Dames & Moore | 4705 | 037 | 2127 | 0639-03894 |
1997/07/00 | Maps (81): Sampling results & locations, 1983-95, figures 5.1-5.82 (map dates 1986-7/97) | Hargis & Assoc, Inc | Montrose Chemical Corp | 4706 | 038 | 0001 | 0639-03921 |
1997/07/00 | Notes re info missing fr gw FS rpt | Jeffrey Dhont / Environmental Protection Agency - Region 9 | - | 4707 | 038 | 0161 | 0639-92144 |
1997/07/00 | Mtg minutes: Summary rpt of clean up sources & relocation sub-group, 6/16/97 mtg (partnering) | - | - | 4708 | 038 | 0166 | 0639-94200 |
1997/07/02 | Proposed NAPL screening investigations, soil & NAPL RI, w/summary matrix table, flow chart & TL to D Rodriguez fr G Fates | Dames & Moore | Shell Oil Co | 4709 | 038 | 0170 | 0639-03721 |
1997/07/03 | Mtg agenda: P-CBSA mtg, 7/8/97, w/fax TL fr P Garcia | CA Environmental Protection Agency - Dept of Toxic Substances Control | - | 4710 | 038 | 0268 | 0639-92123 |
1997/07/08 | Ltr: Transmits comments on joint gw FS & suggested annotated outline, w/o outline, w/comments | Hooshang Nezafati / C H 2 M Hill | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4711 | 038 | 0271 | 0639-03725 |
1997/07/08 | Mtg agenda (draft): Del Amo soil & NAPL RI planning mtg #3, 7/10/97, w/earlier drafts, 7/7/97 & 6/20/97, & fax TLs (phase 2 RI) | Dames & Moore | - | 4712 | 038 | 0293 | 0639-04877 |
1997/07/09 | Memo: Review of natural attenuation study for monochlorobenzene (MCB) & supplemental workplan, w/marginalia | Steve Acree / Environmental Protection Agency - National Risk Management Research Laboratory | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4713 | 038 | 0304 | 0639-03722 |
1997/07/09 | Memo: Review of natural attenuation study for monochlorobenzene (MCB) & supplemental workplan, w/TL to H Nezafati fr J Dhont | Steve Acree / Environmental Protection Agency - National Risk Management Research Laboratory | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4714 | 038 | 0313 | 0639-03819 |
1997/07/09 | Memo: Tentative mtg agenda for 7/15/97 joint gw FS mtg | Hooshang Nezafati / C H 2 M Hill | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4715 | 038 | 0323 | 0639-92125 |
1997/07/10 | Ltr: 7/22/97 sub-group mtg schedule & transmits 6/16/97 partnership mtg summary & working draft sub-group mtg minutes, w/attchs | Cynthia Babich / Del Amo Action Committee | - | 4716 | 038 | 0325 | 0639-03720 |
1997/07/10 | Draft of operational history of Montrose plant for RI/FS, w/TLs fr S Case | Latham & Watkins (Attorneys) | Environmental Protection Agency - Region 9 | 4717 | 038 | 0337 | 0639-03774 |
1997/07/10 | Draft operational history section for Montrose RI/FS, w/marginalia & TLs | Latham & Watkins (Attorneys) | - | 4718 | 038 | 0394 | 0639-03919 |
1997/07/10 | Memo: Monochlorobenzene (MCB) study | Steve Acree / Environmental Protection Agency - Robert S Kerr Environmental Research Laboratory | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4719 | 038 | 0451 | 0639-94121 |
1997/07/15 | Ltr: Transmits rapid optical screening tool (ROST) & cone penetrometer test summ rpt, & lists docs re NAPL screening investigs, w/encl (phase 2 RI) | John Dudley / Dames & Moore | Dante Rodriguez / Environmental Protection Agency - Region 9 | 4720 | 038 | 0453 | 0639-03683 |
1997/07/16 | Soils risk assessment approach, w/TL to J Dhont fr D Jones | McLaren Hart Environmental Engineering Corp - ChemRisk Div | - | 4721 | 038 | 0478 | 0639-03776 |
1997/07/18 | Computer discs (3) & hardcopy version of additional documentation supporting TI waiver for gw at Del Amo site (AOC #92-13), w/TL to J Dhont fr C Paine | Shell Oil Co | Environmental Protection Agency - Region 9 | 4722 | 038 | 0485 | 0639-03726 |
1997/07/23 | Technical memo: Comments on granular activated carbon fluidized bed reactor (GAC-FBR) bench-scale treatability study, w/TL, 7/28/97 | Ken Martins / C H 2 M Hill | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4723 | 038 | 0508 | 0639-03728 |
1997/07/23 | Memo: Telephone call fr J Morabito re Montrose gw risk assessment disc | Hildegard Parvex / Environmental Protection Agency - Region 9 | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4724 | 038 | 0519 | 0639-92126 |
1997/07/24 | FSP, NAPL screening investigation, soil & NAPL RI (AOC #92-13), w/TL to D Rodriguez fr C Paine (phase 2 RI) | Dames & Moore | Shell Oil Co | 4725 | 038 | 0521 | 0639-03684 |
1997/07/25 | Memo: Requests review of 7/24/97 FSP, NAPL screening inves, soil & NAPL RI, & transmits FSP & referenced docs, w/o attchs (phase 2 RI) | Dante Rodriguez / Environmental Protection Agency - Region 9 | David Taylor / Environmental Protection Agency - Region 9 | 4726 | 038 | 0625 | 0639-93566 |
1997/07/28 | Ltr: Investigation of historical stormwater pathway fr former Montrose facility, Kenwood ditch, w/attch & TL to J Dhont fr S Carlton | Stephen Carlton / McLaren Hart Environmental Engineering Corp | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4727 | 038 | 0627 | 0639-03685 |
1997/07/28 | Technical memo: Summarizes & transmits checklists for joint gw FS rpt electronic files, w/attchs | Hooshang Nezafati / C H 2 M Hill | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4728 | 038 | 0637 | 0639-03727 |
1997/07/28 | Memo: Upcoming conference call for Del Amo/Montrose community exposures & health subgroup (partnering) | Tere Brown | - | 4729 | 038 | 0670 | 0639-94201 |
1997/07/30 | Memo: Summary of progress in preparation for joint gw FS rpt revision, w/TL header | Hooshang Nezafati / C H 2 M Hill | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4730 | 038 | 0672 | 0639-92145 |
1997/07/31 | Memo: Comments on joint gw FS appendix B, w/TL to H Nezafati fr J Dhont, 10/14/97 | Steve Acree / Environmental Protection Agency - National Risk Management Research Laboratory | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4731 | 038 | 0674 | 0639-93565 |
1997/07/31 | Memo: Additional examples re joint gw FS (JGWFS) | Hooshang Nezafati / C H 2 M Hill | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4732 | 038 | 0680 | 0639-94103 |
1997/08/04 | Ltr: Transmits 7/22/97 subgroup mtg minutes, 7/25/97 partners list & EPA list of Del Amo site data, w/attchs | William Nelson / US Dept of Health & Human Services - Agency for Toxic Substances & Disease Registry | - | 4733 | 038 | 0682 | 0639-03686 |
1997/08/04 | Memo: Comments on rpt of sensitivity analysis, Montrose | Steve Acree / Environmental Protection Agency - National Risk Management Research Laboratory | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4734 | 038 | 0708 | 0639-93569 |
1997/08/04 | Memo: In situ thermal desorption (presentation) w/TL header | Jim Steed / Terra, Inc | - | 4735 | 038 | 0710 | 0639-94104 |
1997/08/05 | Water quality standards, establishment of numeric criteria for toxic pollutants for CA, proposed rule (Federal Register, v62, #150, pp 42160-42208) | Environmental Protection Agency - Region 9 | - | 4736 | 038 | 0713 | 0639-03920 |
1997/08/06 | Ltr: Missing electronic versions of figures & tables, draft joint gw FS rpt, w/fax TLs | Jeffrey Dhont / Environmental Protection Agency - Region 9 | Frank Bachman / Montrose Chemical Corp | 4737 | 038 | 0764 | 0639-03729 |
1997/08/06 | Memo: Summary of VOC (volatile organic compound) issue | Hooshang Nezafati / C H 2 M Hill | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4738 | 038 | 0771 | 0639-94106 |
1997/08/07 | Memo: Agenda for 8/7/97 mtg | Hooshang Nezafati / C H 2 M Hill | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4739 | 038 | 0776 | 0639-94105 |
1997/08/11 | ROC: Discharge to storm drain option for Del Amo site | John Lovenburg / C H 2 M Hill | Josh Workman / CA Regional Water Quality Control Board - Los Angeles Basin Region | 4740 | 038 | 0778 | 0639-92127 |
1997/08/13 | Ltr: Transmits table 4-1 & zip computer disc of tables & figures for draft joint gw FS, w/attchs | Mark Schultheis / Dames & Moore | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4741 | 038 | 0780 | 0639-03785 |
1997/08/14 | Ltr: EPA disapproval & takeover of draft joint gw FS, w/TLs fr J Dhont | Jeffrey Dhont / Environmental Protection Agency - Region 9 | Frank Bachman / Montrose Chemical Corp | 4742 | 038 | 0790 | 0639-03730 |
1997/08/18 | ROC: Sanitary sewer discharge option for Del Amo site | John Lovenburg / C H 2 M Hill | David Samboli / Los Angeles County Sanitation Districts | 4743 | 038 | 0829 | 0639-92128 |
1997/08/18 | Memo: Comments on field sampling plan (FSP) for NAPL screening investigation, soil & NAPL RI (phase 2 RI) | David Taylor / Environmental Protection Agency - Region 9 | Dante Rodriguez / Environmental Protection Agency - Region 9 | 4744 | 038 | 0832 | 0639-94213 |
1997/08/18 | Memo: Comments on field sampling plan (FSP) for NAPL screening inves, soil & NAPL RI, w/marginalia notes fr 8/19/97 conference call (phase 2 RI) | David Taylor / Environmental Protection Agency - Region 9 | Dante Rodriguez / Environmental Protection Agency - Region 9 | 4745 | 038 | 0838 | 0639-94214 |
1997/08/18 | TL: EPA comments on 7/24/97 field sampling plan (FSP), NAPL screening investigation, soil & NAPL RI (phase 2 RI) | Dante Rodriguez / Environmental Protection Agency - Region 9 | Chuck Paine / Shell Oil Co | 4746 | 038 | 0845 | 0639-94215 |
1997/08/19 | Memo: Likelihood intrinsic biodegradation of monochlorobenzene (MCB) will affect selection of remedial alternative for gw (draft), w/fax TL | Richard Haimann / C H 2 M Hill | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4747 | 038 | 0847 | 0639-03758 |
1997/08/19 | Mtg agenda (draft): Torrance monthly project mtg, 8/20/97, w/TL to J Dhont fr P Sundberg | Montrose Chemical Corp | - | 4748 | 038 | 0862 | 0639-92146 |
1997/08/20 | Technical memo: Topography & surface runoff history, southwestern portion of Del Amo study area, 1924 to present, w/TL to J Dhont fr C Paine | Dames & Moore | Shell Oil Co | 4749 | 038 | 0865 | 0639-03656 |
1997/08/21 | Memo: Comments on field sampling plan (FSP) for NAPL screening investigation, soil & NAPL RI (phase 2 RI) | David Taylor / Environmental Protection Agency - Region 9 | Dante Rodriguez / Environmental Protection Agency - Region 9 | 4750 | 038 | 0892 | 0639-94216 |
1997/08/22 | FSP, NAPL screening investigation, soil & NAPL RI, phase 2 RI (AOC #92-13), w/TL & response to EPA comments | Dames & Moore | Shell Oil Co | 4751 | 038 | 0898 | 0639-02118 |
1997/08/22 | Gw monitoring rpt, 3rd sampling period 1996 & 1st sampling period 1997, Del Amo (AOC #92-13), w/TL to J Dhont fr C Paine | Dames & Moore | Shell Oil Co | 4752 | 038 | 1017 | 0639-03649 |
1997/08/22 | Ltr: Transmits updated compact disc of tables & figures for draft joint gw FS, & cross-reference table, w/o disc, w/table | Roger Niemeyer / Hargis & Assoc, Inc | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4753 | 038 | 1433 | 0639-03786 |
1997/08/22 | TL: Review draft RI, Montrose | David Hargis / Hargis & Assoc, Inc | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4754 | 038 | 1440 | 0639-92138 |
1997/08/27 | Ltr: Response to Del Amo Respondents requests re gw monitoring program & abandonment of well SWL0045, w/fax TL to J Dudley fr J Dhont | Jeffrey Dhont / Environmental Protection Agency - Region 9 | Chuck Paine / Shell Oil Co | 4755 | 038 | 1443 | 0639-92129 |
1997/08/27 | Ltr: Additional data requested for FS discussion of benzene TI waiver at Del Amo site | Jeffrey Dhont / Environmental Protection Agency - Region 9 | Chuck Paine / Shell Oil Co | 4756 | 038 | 1447 | 0639-92130 |
1997/08/28 | Memo: Technologies remaining after screening for effectiveness, implementalbility & cost | Hooshang Nezafati / C H 2 M Hill | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4757 | 038 | 1450 | 0639-94107 |
1997/08/28 | Memo: Identification & screening of technologies & process options in FS | Hooshang Nezafati / C H 2 M Hill | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4758 | 038 | 1453 | 0639-94108 |
1997/08/28 | Memo: Temporary well point gw sample - preliminary results fr source area 12, w/fax TL to D Rodriguez fr J Dudley, 9/2/97 (phase 2 RI, NAPL screening) | Joanne Heffleger / V O C Analytical Laboratories, Inc | Steve Cole / Dames & Moore | 4759 | 038 | 1457 | 0639-94218 |
1997/08/29 | Memo: Comments on revised field sampling plan (FSP) for NAPL screening investigation, soil & NAPL RI (phase 2 RI) | David Taylor / Environmental Protection Agency - Region 9 | Dante Rodriguez / Environmental Protection Agency - Region 9 | 4760 | 038 | 1460 | 0639-04878 |
1997/08/29 | Memo: Assumptions re inorganic & organic chemical concentrations in extracted gw for design & cost estimation of B Plume gw treatment system (GWTS) | Jude Francis / Dames & Moore | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4761 | 038 | 1468 | 0639-92148 |
1997/08/29 | Suggested edits for F Bachman MCB biodegradation ltr, w/TL to J Dhont fr R Haimann | Richard Haimann / C H 2 M Hill | - | 4762 | 038 | 1471 | 0639-94074 |
1997/08/29 | Ltr: Approves 8/22/97 revised field sampling plan (FSP), NAPL screening investigation, soil & NAPL RI, w/o attch (phase 2 RI) | Dante Rodriguez / Environmental Protection Agency - Region 9 | Chuck Paine / Shell Oil Co | 4763 | 038 | 1475 | 0639-94217 |
1997/09/02 | Ltr: B Bratter changes to 6/2/97-6/4/97 deposition transcripts, w/attchs | Linda Brangwynne / Latham & Watkins (Attorneys) | - | 4764 | 038 | 1477 | 0639-03968 |
1997/09/03 | EPA/CH2M Hill joint gw FS mtg, 9/3/97 - summary of mtg notes affecting section 3 | Davi Richards / C H 2 M Hill | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4765 | 038 | 1487 | 0639-94075 |
1997/09/04 | Memo: Progress rpt on Montrose/Del Amo FS | Hooshang Nezafati / C H 2 M Hill | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4766 | 038 | 1491 | 0639-94109 |
1997/09/05 | Ltr: Review of record of decision (ROD) for waste pit area - state concurrence with EPA selected remedy #4 | Nennet Alvarez / CA Environmental Protection Agency - Dept of Toxic Substances Control | John Kemmerer / Environmental Protection Agency - Region 9 | 4767 | 038 | 1494 | 0639-94316 |
1997/09/05 | Memo: Discusses & transmits FSP/QAPP, DNAPL evaluation, w/o attch | Jeffrey Dhont / Environmental Protection Agency - Region 9 | Vance Fong / Environmental Protection Agency - Region 9 | 4768 | 038 | 1498 | 0639-94514 |
1997/09/10 | Info packet re initial findings, ROST profiles at gw contamination source areas 6, 11 & 12, w/TL fr E Weaver (phase 2 RI, NAPL screening) | Dames & Moore | - | 4769 | 038 | 1500 | 0639-03731 |
1997/09/10 | Ltr: Summarizes & transmits comments on 5/97 draft joint gw risk assessment | Jeffrey Dhont / Environmental Protection Agency - Region 9 | Frank Bachman / Montrose Chemical Corp | 4770 | 038 | 1549 | 0639-03732 |
1997/09/10 | Ltr: Position on intrinsic biodegradation of monochlorobenzene (MCB) in gw at Montrose & review of unsolicited study proposals, w/additional comments | Jeffrey Dhont / Environmental Protection Agency - Region 9 | Frank Bachman / Montrose Chemical Corp | 4771 | 038 | 1561 | 0639-03733 |
1997/09/10 | TL: Info packet re initial findings, ROST profiles at gw contamination source areas 6, 11 & 12, w/marginalia (phase 2 RI, NAPL screening) | Erich Weaver / Dames & Moore | Dante Rodriguez / Environmental Protection Agency - Region 9 | 4772 | 038 | 1587 | 0639-94219 |
1997/09/11 | TL: Discharge options table w/TL header | Hooshang Nezafati / C H 2 M Hill | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4773 | 038 | 1589 | 0639-94110 |
1997/09/11 | Press Release EPA approves plan to clean up site (ROD file) | Environmental Protection Agency - Region 9 | - | 4774 | 038 | 1591 | 0639-94315 |
1997/09/15 | Discussion draft for section 1, joint gw FS, w/TL to H Nezafati fr J Dhont | Environmental Protection Agency - Region 9 | - | 4775 | 038 | 1593 | 0639-03759 |
1997/09/15 | Ltr: 9/25/97 partnership mtg postponed, steering committee mtg that day instead | Cynthia Babich / Del Amo Action Committee | - | 4776 | 038 | 1600 | 0639-92092 |
1997/09/15 | Mtg agenda (draft): Torrance monthly project mtg, 9/17/97, w/TL to J Dhont fr P Sundberg | Montrose Chemical Corp | - | 4777 | 038 | 1602 | 0639-92147 |
1997/09/16 | Ltr: Evidence of NAPL & proposed boring locations, gw contamination source areas 6, 11 & 12 (phase 2 RI) | Chuck Paine / Shell Oil Co | Dante Rodriguez / Environmental Protection Agency - Region 9 | 4778 | 038 | 1605 | 0639-92149 |
1997/09/17 | Ltr: Invitation to 9/29/97 mtg re Lockheed Martin Corp & requests assistance in formation of Consultative Work Group, w/TL header to J Dhont fr C Yen | Yolanda Garza / CA Environmental Protection Agency - Dept of Toxic Substances Control | - | 4779 | 038 | 1608 | 0639-92115 |
1997/09/19 | Ltr: 8/27 ltr response & transmits detailed hydrostratigraphy, upper Bellflower aquitard & mid Bellflower B-Sand (joint gw FS app E attch 1), w/attch | Chuck Paine / Shell Oil Co | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4780 | 038 | 1611 | 0639-03689 |
1997/09/19 | Memo: 9/22/97 joint FS mtg agenda, w/marginalia | Hooshang Nezafati / C H 2 M Hill | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4781 | 038 | 1746 | 0639-92116 |
1997/09/24 | Draft risk assessment for on-property & off-property soils | McLaren Hart Environmental Engineering Corp | Montrose Chemical Corp | 4782 | 038 | 1748 | 0639-03895 |
1997/09/24 | Ltr: Use of material prepared by McLaren/Hart for draft joint gw FS, w/fax TL | J Morabito / McLaren Hart Environmental Engineering Corp | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4783 | 038 | 2118 | 0639-92150 |
1997/09/24 | Memo: Request for additional info on joint gw FS (JGWFS) | Hooshang Nezafati / C H 2 M Hill | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4784 | 038 | 2122 | 0639-94111 |
1997/09/24 | TL: Draft risk assessment for on-property & off-property soils | McLaren Hart Environmental Engineering Corp | Montrose Chemical Corp | 4785 | 038 | 2124 | 0639-94440 |
1997/09/25 | TL: Technical memo - topography & surface runoff history, southwestern portion of Del Amo study area, 1924 to present | John Dudley / Dames & Moore | Frank Bachman / Montrose Chemical Corp | 4786 | 038 | 2126 | 0639-93575 |
1997/09/29 | Memo: Comments on draft SAP, including FSP & QAPP, for DNAPL | Michael Mahoney / Environmental Protection Agency - Region 9 | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4787 | 038 | 2128 | 0639-03779 |
1997/09/29 | Memo: Preparation of draft agenda for technical mtg & transmits Hargis production schedule for RI appendices, w/attch & fax TL | Paul Sundberg / Montrose Chemical Corp | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4788 | 038 | 2135 | 0639-92139 |
1997/09/30 | Ltr: Transmits 9/22/97 additional data submittal ltr & addresses item 5 of 8/27/97 ltr (AOC #92-13), w/attch | Chuck Paine / Shell Oil Co | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4789 | 038 | 2140 | 0639-92151 |
1997/10/00 | Ltr: Transmits 9/25/97 steering committee mtg minutes & 10/29/97 partnership mtg agenda, w/attchs | Cynthia Babich / Del Amo Action Committee | - | 4790 | 038 | 2145 | 0639-92163 |
1997/10/01 | Ltr: Transmits figures & spreadsheets requested by N Raykhman in 9/26/97 memo, joint gw FS (AOC #92-13), w/attchs | Chuck Paine / Shell Oil Co | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4791 | 038 | 2151 | 0639-03800 |
1997/10/02 | Ltr: Responds to 9/24/97 ltr re use of material prepared by McLaren/Hart for draft joint gw FS | Jeffrey Dhont / Environmental Protection Agency - Region 9 | J Morabito / McLaren Hart Environmental Engineering Corp | 4792 | 038 | 2162 | 0639-92152 |
1997/10/03 | Memo: Comments on FSP & QAPP, DNAPL | Steve Acree / Environmental Protection Agency - National Risk Management Research Laboratory | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4793 | 038 | 2165 | 0639-92153 |
1997/10/06 | Slip sheet for appendix H of RI rpt sent 10/3/97, w/TL to J Dhont fr A Halliburton | Hargis & Assoc, Inc | - | 4794 | 038 | 2168 | 0639-92154 |
1997/10/09 | Mtg agenda (draft): Montrose soil/DNAPL FS technical mtg, 10/15/97, w/TL to J Dhont fr J Morabito | McLaren Hart Environmental Engineering Corp | - | 4795 | 038 | 2171 | 0639-92155 |
1997/10/13 | Memo: Brief list of general alternative components that trigger ARARs | Hooshang Nezafati / C H 2 M Hill | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4796 | 038 | 2175 | 0639-94112 |
1997/10/14 | Mtg agenda (draft): Conference call - Montrose soil/DNAPL FS technical mtg, w/marginalia & TL to J Dhont fr J Morabito | McLaren Hart Environmental Engineering Corp | - | 4797 | 038 | 2177 | 0639-92156 |
1997/10/15 | Memo: Review of 8/22/97 review draft RI, Montrose | Hooshang Nezafati / C H 2 M Hill | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4798 | 038 | 2180 | 0639-03780 |
1997/10/17 | Ltr: Confirms request for electronic version of draft RI rpt, Montrose site | Jeffrey Dhont / Environmental Protection Agency - Region 9 | Paul Sundberg / Montrose Chemical Corp | 4799 | 038 | 2194 | 0639-92157 |
1997/10/20 | Technical rationale re impracticability of additional remediation of water table plume, Montrose, w/marginalia & attchs (figures only) | Hargis & Assoc, Inc | - | 4800 | 038 | 2198 | 0639-03781 |
1997/10/22 | Ltr: No comments on response to comments on parcel A, phase 2 soil characterization for McDonnell Douglas Realty Co C-6 facility | J Ross / CA Regional Water Quality Control Board - Los Angeles Basin Region | Michael Young / Integrated Environmental Services | 4801 | 038 | 2205 | 0639-92158 |
1997/10/22 | Memo: Verifies guidance document on data quality objectives, w/attch | Michael Palmer / Hargis & Assoc, Inc | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4802 | 038 | 2207 | 0639-92159 |
1997/10/22 | Memo: Visit to PTS Laboratory to review Dames & Moore soil core lab procedures for project, w/TL to D Rodriguez fr N Jensen, 12/31/97 (phase 2 RI) | Hooshang Nezafati / C H 2 M Hill | Dante Rodriguez / Environmental Protection Agency - Region 9 | 4803 | 038 | 2210 | 0639-94220 |
1997/10/24 | Draft agenda for DNAPL FS conference call, 10/28/97, w/conference call instructions & TL to J Dhont fr M Palmer | Hargis & Assoc, Inc | - | 4804 | 038 | 2214 | 0639-92160 |
1997/10/27 | TL: Regional QA/QC guidances for preparation of FSPs & QAPPs, w/fax TLs | Jeffrey Dhont / Environmental Protection Agency - Region 9 | Michael Palmer / Hargis & Assoc, Inc | 4805 | 038 | 2218 | 0639-92161 |
1997/10/29 | Ltr: Technical concerns re Hargis submittal of information re hydraulic containment in upper Bellflower aquitard | Jeffrey Dhont / Environmental Protection Agency - Region 9 | Frank Bachman / Montrose Chemical Corp | 4806 | 038 | 2223 | 0639-92162 |
1997/10/30 | Comments on FSP & QAPP for dense non-aqueous phase liquid (DNAPL) evaluation, w/TLs | Environmental Protection Agency - Region 9 | Montrose Chemical Corp | 4807 | 038 | 2227 | 0639-03735 |
1997/10/31 | TL: Literature re hydrous pyrolysis/oxidation | Jeffrey Dhont / Environmental Protection Agency - Region 9 | Michael Palmer / Hargis & Assoc, Inc | 4808 | 038 | 2238 | 0639-92164 |
1997/11/00 | Draft joint gw risk assessment, w/marginalia | McLaren Hart Environmental Engineering Corp | Montrose Chemical Corp | 4809 | 038 | 2240 | 0639-03797 |
1997/11/04 | Draft table 4-5, identification & initial screening of technology types & process options for treatment of COCs, joint gw FS, w/TL fr H Nezafati | C H 2 M Hill | - | 4810 | 038 | 2435 | 0639-03760 |
1997/11/06 | Ltr: List of retained technologies in gw FS | Jeffrey Dhont / Environmental Protection Agency - Region 9 | Gloria Conti / CA Environmental Protection Agency - Dept of Toxic Substances Control | 4811 | 038 | 2451 | 0639-92165 |
1997/11/07 | Draft figures 2-1 to 2-29 for joint gw FS, 4/2/97 & 11/7/97 | Hargis & Assoc, Inc | - | 4812 | 038 | 2455 | 0639-03801 |
1997/11/08 | Memo: Response to gw FS document request | Michael Palmer / Hargis & Assoc, Inc | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4813 | 038 | 2513 | 0639-94113 |
1997/11/12 | Memos: Community relations activities updates for Del Amo/Montrose for periods 10/13/94-3/4/96 & 7/11/96-11/11/97 | Christine Roberts / C H 2 M Hill | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4814 | 038 | 2515 | 0639-03114 |
1997/11/12 | Ltr: Confirmation of proposed environmental activities associated with Kenwood ditch, w/fax TL to J Dhont fr D Jones | Douglas Jones / McLaren Hart Environmental Engineering Corp | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4815 | 038 | 2643 | 0639-03736 |
1997/11/12 | Ltr: Status of source area borings & physical testing program (AOC #92-13), w/attch (phase 2 RI, NAPL screening) | Chuck Paine / Shell Oil Co | Dante Rodriguez / Environmental Protection Agency - Region 9 | 4816 | 038 | 2650 | 0639-04879 |
1997/11/13 | Ltr: Comments on 11/12/97 McLaren Hart ltr re Kenwood ditch investigation, w/TL to D Jones & J Morabito fr J Dhont | Jeffrey Dhont / Environmental Protection Agency - Region 9 | Frank Bachman / Montrose Chemical Corp | 4817 | 038 | 2658 | 0639-92166 |
1997/11/17 | TL: Detailed hydrostratigraphy, upper Bellflower aquitard & middle Bellflower B-Sand, gw contamination source areas (AOC #92-13) | John Dudley / Dames & Moore | Hooshang Nezafati / C H 2 M Hill | 4818 | 039 | 0001 | 0639-92167 |
1997/11/18 | DNAPL information submission, w/TL to J Dhont fr R Niemeyer | Hargis & Assoc, Inc | Environmental Protection Agency - Region 9 | 4819 | 039 | 0003 | 0639-03897 |
1997/11/18 | Agenda for DNAPL FS conference call, 11/19/97, w/marginalia, conference call instructions & TLs to J Dhont | Hargis & Assoc, Inc | - | 4820 | 039 | 0236 | 0639-92169 |
1997/11/19 | Figure re TI waiver at C-Sand, Del Amo, w/TL to H Nezafati fr J Dhont | Jeffrey Dhont / Environmental Protection Agency - Region 9 | - | 4821 | 039 | 0241 | 0639-92168 |
1997/11/21 | Memo: Comments on 10/22/96 draft Dames & Moore Del Amo gw RI rpt, w/marginalia (privileged, FOIA ex 5) | John Lyons / Environmental Protection Agency - Region 9 - Office of Regional Counsel | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4822 | 039 | 0244 | 0639-03761 |
1997/11/24 | TL: Computer disc containing additional figures for draft joint gw FS rpt | Ming Zhu / Dames & Moore | Hooshang Nezafati / C H 2 M Hill | 4823 | 039 | 0246 | 0639-93568 |
1997/11/25 | Ltr: Transmits draft RA objectives for DNAPL FS, listing of remedial technologies, & table of data uses & limitations, w/marginalia, attchs & TL | Michael Palmer / Hargis & Assoc, Inc | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4824 | 039 | 0248 | 0639-03737 |
1997/11/25 | Response to EPA & DTSC comments on draft joint gw risk assessment, w/marginalia & TL to J Dhont fr R Richter | Montrose Chemical Corp | Environmental Protection Agency - Region 9 | 4825 | 039 | 0257 | 0639-03782 |
1997/11/26 | Memo: Transmits excerpts fr draft joint gw FS for review of proposed TI waiver & discusses ARAR issues, w/attchs | Jeffrey Dhont / Environmental Protection Agency - Region 9 | Alan Youkeles / Environmental Protection Agency - Region 9 | 4826 | 039 | 0272 | 0639-03739 |
1997/11/26 | Explanation of significant differences to National Remedy Review Board (NRRB) information package, dual site gw OU | Jeffrey Dhont / Environmental Protection Agency - Region 9 | - | 4827 | 039 | 0456 | 0639-94513 |
1997/11/28 | TL: Draft joint gw FS rpt | Hooshang Nezafati / C H 2 M Hill | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4828 | 039 | 0460 | 0639-94123 |
1997/12/00 | Montrose joint gw FS appendix B, gw modeling results (draft) | C H 2 M Hill | Environmental Protection Agency - Region 9 | 4829 | 039 | 0462 | 0639-03904 |
1997/12/01 | Draft joint gw FS rpt | C H 2 M Hill | Environmental Protection Agency - Region 9 | 4830 | 039 | 0674 | 0639-04763 |
1997/12/02 | Final installment comments on draft Del Amo gw RI rpt (AOC #92-13), w/TLs | Environmental Protection Agency - Region 9 | - | 4831 | 039 | 1388 | 0639-03738 |
1997/12/03 | Ltr: Correction of deficiencies in 12/2/97 McLaren Hart monthly inspection rpt, w/fax TL to J Morabito fr J Dhont | Jeffrey Dhont / Environmental Protection Agency - Region 9 | Paul Sundberg / Montrose Chemical Corp | 4832 | 039 | 1396 | 0639-92171 |
1997/12/06 | Declaration of David Hargis, USA v Montrose Chemical Corp, w/attch | David Hargis / Hargis & Assoc, Inc | US District Court - Central District of California | 4833 | 039 | 1399 | 0639-03740 |
1997/12/07 | Declaration of David Hargis in support of defendants opposition to plaintiff motion for partial summary judgment, USA v Montrose Chemical Corp | David Hargis / Hargis & Assoc, Inc | US District Court - Central District of California | 4834 | 039 | 1410 | 0639-03750 |
1997/12/07 | Memo: Sensitivity analysis | Michael Palmer / Hargis & Assoc, Inc | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4835 | 039 | 1456 | 0639-94114 |
1997/12/08 | Joint gw FS section 10, detailed analysis & comparison of alternatives (draft), w/marginalia & fax TL to J Dhont fr H Nezafati | C H 2 M Hill | Environmental Protection Agency - Region 9 | 4836 | 039 | 1459 | 0639-04921 |
1997/12/12 | Draft agenda for DNAPL FS conference call, 12/16/97, w/marginalia, conference call instructions & TL to J Dhont fr M Palmer | Hargis & Assoc, Inc | - | 4837 | 039 | 1496 | 0639-92170 |
1997/12/15 | Section 10 of joint gw FS (JGWFS) - detailed analysis & comparison of alternatives (draft) w/TL | C H 2 M Hill | Environmental Protection Agency - Region 9 | 4838 | 039 | 1500 | 0639-04790 |
1997/12/18 | Comments on revised draft joint gw risk assessment, w/TLs fr J Dhont | Environmental Protection Agency - Region 9 | - | 4839 | 039 | 1535 | 0639-03751 |
1997/12/19 | Memo: Update to pre-project activities & transmits 12/8/97 project planning mtg minutes, w/o coordinator rpt, schedule, map & agenda, w/minutes | Mitch Clark / Environmental Chemical Corp | Paul Apodaca / US Army Corps of Engineers - Los Angeles District | 4840 | 039 | 1548 | 0639-03754 |
1998/00/00 | Figures 6.3-1a to 6.3-4b for Del Amo gw RI rpt - benzene concentrations as a function of distance fr source | Dames & Moore | - | 4841 | 039 | 1556 | 0639-00144 |
1998/00/00 | Draft table 10-1 of joint gw FS (JGWFS) | C H 2 M Hill | Environmental Protection Agency - Region 9 | 4842 | 039 | 1565 | 0639-04818 |
1998/01/06 | Interim drafts & comments for various sections of joint gw FS during development, 7/31/97-1/6/98, w/marginalia | Jeffrey Dhont / Environmental Protection Agency - Region 9 | - | 4843 | 040 | 0001 | 0639-02047 |
1998/01/06 | Ltr: A Antipas request to review documents at Federal Records Center (FRC) | ChereAmie Bischoff / Environmental Protection Agency - Region 9 | Edmund Kelly / US National Archives & Records Administration - Federal Records Center (San Bruno) | 4844 | 040 | 0384 | 0639-92131 |
1998/01/07 | Memo: Review of DNAPL information submission | Steve Acree / Environmental Protection Agency - National Risk Management Research Laboratory | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4845 | 040 | 0386 | 0639-92172 |
1998/01/07 | Mtg agenda: Scope of work for Kenwood investigation & 204th St removal, w/sign-in sheet & marginalia | Environmental Chemical Corp | - | 4846 | 040 | 0389 | 0639-92175 |
1998/01/08 | Ltr: Notice of disapproval & takeover of Montrose RI rpt (order 85-04 as amended) | Jeffrey Dhont / Environmental Protection Agency - Region 9 | Frank Bachman / Montrose Chemical Corp | 4847 | 040 | 0392 | 0639-03752 |
1998/01/08 | Montrose RI redline version, section 1, introduction, w/TL & marginalia | C H 2 M Hill | Environmental Protection Agency - Region 9 | 4848 | 040 | 0405 | 0639-04793 |
1998/01/08 | Mtg agenda (draft): Torrance monthly project mtg, 1/14/98, w/TL to J Dhont fr P Sundberg | Montrose Chemical Corp | Environmental Protection Agency - Region 9 | 4849 | 040 | 0518 | 0639-92132 |
1998/01/09 | Memo: Del Amo gw RI comments on responses by Dames & Moore | Hooshang Nezafati / C H 2 M Hill | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4850 | 040 | 0521 | 0639-94115 |
1998/01/12 | Response to rough draft response to comments on Del Amo gw RI, w/TL to J Dudley fr J Dhont, 1/14/98 | Environmental Protection Agency - Region 9 | Dames & Moore | 4851 | 040 | 0524 | 0639-93560 |
1998/01/13 | Proposed revisions to draft joint gw risk assessment/PHEE in response to EPA 12/18/97 comments, w/marginalia & TL to J Dhont fr R Richter | McLaren Hart Environmental Engineering Corp | Environmental Protection Agency | 4852 | 040 | 0531 | 0639-03905 |
1998/01/13 | Ltr: Proposed soil FS scope & schedule, w/attch & marginalia | J Morabito / McLaren Hart Environmental Engineering Corp | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4853 | 040 | 0720 | 0639-04924 |
1998/01/14 | Agenda for Torrance project mtg | Paul Sundberg / Montrose Chemical Corp | - | 4854 | 040 | 0728 | 0639-94333 |
1998/01/15 | EPA split field sample & analysis plan (FSP/SAP) for determination of non-aqueous phase liquids at well P-1, w/TL 1/15/98 (Del Amo RI/FS) | Susan Sanders / I C F Technology, Inc | Environmental Protection Agency - Region 9 | 4855 | 040 | 0730 | 0639-04775 |
1998/01/15 | Site investigation activities, RI redline version, sections 2 & 4, w/TL & marginalia | C H 2 M Hill | Environmental Protection Agency - Region 9 | 4856 | 040 | 0795 | 0639-04792 |
1998/01/15 | Memo: ROC with T Smith, Jones Chemical plant manager, re actions by Union Pacific on adjacent Montrose property | Jeffrey Dhont / Environmental Protection Agency - Region 9 | - | 4857 | 040 | 0916 | 0639-92142 |
1998/01/15 | Memo: ROC of 1/14/98 mtg with McLaren Hart re actions by Union Pacific at site, w/attchs | Jeffrey Dhont / Environmental Protection Agency - Region 9 | - | 4858 | 040 | 0918 | 0639-92143 |
1998/01/16 | Ltr: Discusses & transmits revised figure 5.3 of preliminary review draft RI, w/fax TL & attchs | Andrew Halliburton / Hargis & Assoc, Inc | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4859 | 040 | 0923 | 0639-03787 |
1998/01/16 | Ltr: Detailed list of Title 22 & state water quality regulation ARARs for Montrose/Del Amo gw remedy (unsigned) | Haissam Salloum / CA Environmental Protection Agency - Dept of Toxic Substances Control | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4860 | 040 | 0929 | 0639-04925 |
1998/01/16 | Memo: Observation of railroad construction activities during 1/15/98 site visit, w/attchs | Gabriel Silva / C H 2 M Hill | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4861 | 040 | 0936 | 0639-92141 |
1998/01/16 | Ltr: Summarizes proposed sampling & analytical plan for annual gw monitoring event (AOC #92-13), w/encl & fax TL to J Dhont fr J Dudley | Chuck Paine / Shell Oil Co | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4862 | 040 | 0944 | 0639-92173 |
1998/01/16 | Map: Locations of dirt piles after digging unauthorized tracks, w/marginalia & TL header to J Dhont fr M Grant | Union Pacific Environmental Management | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4863 | 040 | 0950 | 0639-94165 |
1998/01/20 | Ltr: Detailed list of Title 22 & state water quality regulation ARARs for Montrose/Del Amo gw remedy | Haissam Salloum / CA Environmental Protection Agency - Dept of Toxic Substances Control | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4864 | 040 | 0952 | 0639-03344 |
1998/01/20 | Computer disc: Montrose site file index, 3.5 in, w/TL to P Sundberg fr J Dhont, 1/21/98 | Environmental Protection Agency - Region 9 | - | 4865 | 040 | 0959 | 0639-03788 |
1998/01/20 | Montrose RI redline version, section 6, w/TL & marginalia | C H 2 M Hill | Environmental Protection Agency - Region 9 | 4866 | 040 | 0962 | 0639-04791 |
1998/01/21 | Computer disc: Del Amo site file index, 3.5 in, w/TL to C Paine fr J Dhont | Environmental Protection Agency - Region 9 | - | 4867 | 040 | 1026 | 0639-03789 |
1998/01/21 | Memo: Transmits ARARs & review of 11/97 revisions to draft joint gw risk assessment & 1/25/97 response to EPA comments, w/o ARARs, w/review | Gloria Conti / CA Environmental Protection Agency - Dept of Toxic Substances Control | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4868 | 040 | 1029 | 0639-94164 |
1998/01/22 | Memo: Review comments on RI rpt | Hooshang Nezafati / C H 2 M Hill | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4869 | 040 | 1033 | 0639-94116 |
1998/01/22 | Informal notes on EPA issues with para-chlorobenzene sulfonic acid (p-CBSA) section of state ARARs 1/20/98 ltr, w/fax TL to G Conti fr J Dhont | Jeffrey Dhont / Environmental Protection Agency - Region 9 | Gloria Conti / CA Environmental Protection Agency - Dept of Toxic Substances Control | 4870 | 040 | 1036 | 0639-94420 |
1998/01/23 | Mtg agenda: DNAPL FS conference call, 1/27/98, w/marginalia, handouts, conference call instructions & TL fr M Palmer | Hargis & Assoc, Inc | - | 4871 | 040 | 1042 | 0639-04926 |
1998/01/23 | Ltr: Response to EPA notice of disapproval & takeover of Montrose Chemical RI rpt, w/fax TL to J Dhont fr E Bliss | Erik Bliss / Latham & Watkins (Attorneys) | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4872 | 040 | 1051 | 0639-94422 |
1998/01/26 | Memo: Change in Torrance project consultants, including Earth Tech address & phone information, w/fax TL to J Dhont fr P Sundberg | Paul Sundberg / Montrose Chemical Corp | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4873 | 040 | 1055 | 0639-94419 |
1998/01/26 | Ltr: Follow-up to Montrose Chemical request for informal conference with EPA re disapproval & takeover of RI rpt, w/fax TL fr E Bliss | Erik Bliss / Latham & Watkins (Attorneys) | John Lyons / Environmental Protection Agency - Region 9 | 4874 | 040 | 1058 | 0639-94423 |
1998/01/26 | Ltr: Response to 4/24/97 ltr relaying comments received on Montrose public health assessment | Jeffrey Dhont / Environmental Protection Agency - Region 9 | Sherry Chan / CA Dept of Health Services | 4875 | 040 | 1062 | 0639-94424 |
1998/01/27 | Ltr: Clarifies illegible text on last set of EPA comments on joint gw risk assessment, w/fax TL to R Richter fr J Dhont | Jeffrey Dhont / Environmental Protection Agency - Region 9 | Richard Richter / McLaren Hart Environmental Engineering Corp | 4876 | 040 | 1065 | 0639-94425 |
1998/01/27 | Memo: Observation of railroad construction activities on SE corner of Montrose site, w/attchs | Gabriel Silva / C H 2 M Hill | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4877 | 040 | 1069 | 0639-94426 |
1998/01/27 | Draft cost summary sheets for 3 chlorobenzene plume reduction scenarios in joint gw FS app C, w/fax TL to P Sundberg fr J Dhont | - | - | 4878 | 040 | 1075 | 0639-94427 |
1998/01/29 | Ltr: Notice of change in analytical laboratory services for Del Amo RI/FS (phase 2 FS) | Chuck Paine / Shell Oil Co | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4879 | 040 | 1080 | 0639-94221 |
1998/01/30 | Technical memo: Request for clarification on QA/QC issues for Montrose RI rpt, w/ltr containing missing data, 1/19/98 | Hooshang Nezafati / C H 2 M Hill | Andrew Halliburton / Hargis & Assoc, Inc | 4880 | 040 | 1083 | 0639-02811 |
1998/01/30 | Ltr: Concerns re content of final RA alternatives contained in draft gw FS, w/TLs | Chuck Paine / Shell Oil Co | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4881 | 040 | 1091 | 0639-04927 |
1998/01/30 | Ltr: 1/30/98 DNAPL evaluation/FS conference call summary, w/attch | David Hargis / Hargis & Assoc, Inc | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4882 | 040 | 1099 | 0639-04928 |
1998/01/30 | Memo: Review of Montrose RI rpt for data quality assurance, w/TL header | Hooshang Nezafati / C H 2 M Hill | Andrew Halliburton / Hargis & Assoc, Inc | 4883 | 040 | 1106 | 0639-94117 |
1998/01/30 | Technical memo: Request for clarification on QA/QC issues for Montrose RI rpt, w/fax TLs to J Dhont fr H Nezafati, 2/2/98 & 3/9/98 | Hooshang Nezafati / C H 2 M Hill | Andrew Halliburton / Hargis & Assoc, Inc | 4884 | 040 | 1109 | 0639-94150 |
1998/02/00 | Joint gw risk assessment, Montrose & Del Amo sites (rev 5/15/98) | McLaren Hart Environmental Engineering Corp | Montrose Chemical Corp | 4885 | 040 | 1114 | 0639-03896 |
1998/02/00 | Joint gw risk assessment, Montrose & Del Amo sites (superseded pp) | McLaren Hart Environmental Engineering Corp | Montrose Chemical Corp | 4886 | 040 | 1580 | 0639-04637 |
1998/02/00 | Joint gw FS section 10 (redline/strikeout draft) | Jeffrey Dhont / Environmental Protection Agency - Region 9 | C H 2 M Hill | 4887 | 040 | 1650 | 0639-04922 |
1998/02/00 | Joint gw FS section 10 (redline/strikeout draft), w/marginalia | Jeffrey Dhont / Environmental Protection Agency - Region 9 | C H 2 M Hill | 4888 | 040 | 1696 | 0639-04923 |
1998/02/03 | Ltr: Transmits Del Amo final gw RI rpt, for preliminary review, & responses to comments fr EPA (AOC #92-13), w/o rpt, w/responses | Chuck Paine / Shell Oil Co | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4889 | 040 | 1741 | 0639-00146 |
1998/02/03 | Draft gw RI rpt, Del Amo study area, v1 (text, tables & figures, & apps A & H) | Dames & Moore | Shell Oil Co | 4890 | 040 | 1800 | 0639-00305 |
1998/02/03 | Ltr: Discusses & transmits comments on draft joint gw FS, w/o section 10 redline/strikeout version, w/table of comments | Jeffrey Dhont / Environmental Protection Agency - Region 9 | Hooshang Nezafati / C H 2 M Hill | 4891 | 040 | 2371 | 0639-04929 |
1998/02/03 | Memo: EPA headquarters review of draft technical impracticability waiver justification for portions of gw dual site OU remedy | Alan Youkeles / Environmental Protection Agency - Office of Emergency & Remedial Response | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4892 | 040 | 2410 | 0639-94119 |
1998/02/03 | Ltr: Response to 1/13/98 McLaren Hart ltr & to proposed soil FS scope & schedule | Jeffrey Dhont / Environmental Protection Agency - Region 9 | Paul Sundberg / Montrose Chemical Corp | 4893 | 040 | 2413 | 0639-94428 |
1998/02/03 | Ltr: Final modifications for joint gw risk assessment completion | Jeffrey Dhont / Environmental Protection Agency - Region 9 | Richard Richter / McLaren Hart Environmental Engineering Corp | 4894 | 040 | 2419 | 0639-94429 |
1998/02/04 | Ltr: Responds to 1/30/98 ltr re 1/27/98 DNAPL conference call | Jeffrey Dhont / Environmental Protection Agency - Region 9 | David Hargis / Hargis & Assoc, Inc | 4895 | 040 | 2422 | 0639-94430 |
1998/02/09 | Memo: Comments on 12/1/97 joint gw FS (privileged, FOIA ex 5) | John Lyons / Environmental Protection Agency - Region 9 - Office of Regional Counsel | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4896 | 040 | 2425 | 0639-02176 |
1998/02/09 | Comments on draft ch 5 fr CH2M Hill, Montrose RI, w/fax TL to H Nezafati fr J Dhont | Jeffrey Dhont / Environmental Protection Agency - Region 9 | C H 2 M Hill | 4897 | 040 | 2427 | 0639-04930 |
1998/02/09 | Memo: Request for analyses, quarterly gw monitoring program, w/attch | Gabriel Silva / C H 2 M Hill | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4898 | 040 | 2444 | 0639-94431 |
1998/02/10 | 2nd installment of comments on draft joint gw FS rpt, CH2M Hill draft, w/fax TL to H Nezafati fr J Dhont | Jeffrey Dhont / Environmental Protection Agency - Region 9 | C H 2 M Hill | 4899 | 040 | 2448 | 0639-04931 |
1998/02/11 | Draft Del Amo & Montrose 98 community involvement position paper | Environmental Protection Agency - Region 9 | - | 4900 | 040 | 2463 | 0639-04799 |
1998/02/11 | Ltr: Response to comments on potential RWQCB p-CBSA ARARs, Montrose/Del Amo gw remedy (draft), w/TL header to J Dhont fr G Conti, 2/18/98 | J Ross / CA Regional Water Quality Control Board - Los Angeles Basin Region | Gloria Conti / CA Environmental Protection Agency - Dept of Toxic Substances Control | 4901 | 040 | 2474 | 0639-94163 |
1998/02/12 | Revised references (section 9) for Del Amo final gw RI rpt, for preliminary review (AOC #92-13), w/TL to J Dhont fr C Paine | Dames & Moore | - | 4902 | 040 | 2478 | 0639-00145 |
1998/02/16 | Supplement to joint gw risk assessment (draft), w/marginalia & fax TL to J Dhont fr H Nezafati | C H 2 M Hill | Environmental Protection Agency - Region 9 | 4903 | 040 | 2492 | 0639-02812 |
1998/02/18 | Memo: Transmits field rpt data for stormwater pathway & 1/12/97 memo proposing methodology for final ecological risk assessment, w/o data, w/memo | Jeffrey Dhont / Environmental Protection Agency - Region 9 | Hooshang Nezafati / C H 2 M Hill | 4904 | 040 | 2508 | 0639-03365 |
1998/02/19 | Memo: Comments on 12/1/98 draft joint gw FS rpt, w/marginalia & fax TLs | Kim Christmann / CA Environmental Protection Agency - Dept of Toxic Substances Control | Gloria Conti / CA Environmental Protection Agency - Dept of Toxic Substances Control | 4905 | 040 | 2524 | 0639-02814 |
1998/02/19 | Joint gw risk assessment pp 3-5, 3-6, 5-8 & 5-42, w/fax TL to J Dhont fr R Richter | McLaren Hart Environmental Engineering Corp | Montrose Chemical Corp | 4906 | 040 | 2549 | 0639-94433 |
1998/02/19 | Memo: 11/10/97 briefing re EPA approach to para-chlorobenzene sulfonic acid (p-CBSA) in gw at Montrose/Del Amo sites | Jeffrey Dhont / Environmental Protection Agency - Region 9 | - | 4907 | 040 | 2555 | 0639-94434 |
1998/02/20 | Memo: Requests review of data quality for 3 investigation rpts, w/marginalia (phase 2 RI) | Dante Rodriguez / Environmental Protection Agency - Region 9 | David Taylor / Environmental Protection Agency - Region 9 | 4908 | 040 | 2558 | 0639-94205 |
1998/02/20 | Memo: Requests review of data quality for 3 investigation rpts (phase 2 RI) | Dante Rodriguez / Environmental Protection Agency - Region 9 | David Taylor / Environmental Protection Agency - Region 9 | 4909 | 040 | 2560 | 0639-94222 |
1998/02/20 | Ltr: Response to 1/14/98 ltr suggesting separate records of decision (RODs) for gw remedies at Montrose & Del Amo sites | Keith Takata / Environmental Protection Agency - Region 9 | Rand Shulman / Shell Soil Products Co | 4910 | 040 | 2562 | 0639-94435 |
1998/02/20 | Ltr: Response to 1/14/98 ltr suggesting separate records of decision (RODs) for gw remedies at Montrose & Del Amo sites | Keith Takata / Environmental Protection Agency - Region 9 | Jerry Martin / Dow Chemical Co | 4911 | 040 | 2565 | 0639-94436 |
1998/02/23 | Memo: Review of 2/3/98 preliminary final gw RI rpt, Del Amo study area (draft), w/handwritten notes & TL to J Dhont fr H Nezafati, 3/3/98 | Hooshang Nezafati / C H 2 M Hill | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4912 | 040 | 2568 | 0639-94153 |
1998/02/24 | TL: Final joint gw risk assessment, Montrose & Del Amo sites | Richard Richter / McLaren Hart Environmental Engineering Corp | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4913 | 040 | 2575 | 0639-94437 |
1998/02/25 | TL: Draft supplement to joint gw risk assessment | Hooshang Nezafati / C H 2 M Hill | Gloria Conti / CA Environmental Protection Agency - Dept of Toxic Substances Control | 4914 | 040 | 2577 | 0639-94335 |
1998/02/27 | Ltr: Transmits final draft DNAPL evaluation FSP & QAPP, & response to EPA SAP comments 10/30/97, w/attchs | David Hargis / Hargis & Assoc, Inc | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4915 | 041 | 0001 | 0639-03898 |
1998/03/00 | Montrose joint gw FS section 2, physical characteristics & conceptual model (draft), w/marginalia | C H 2 M Hill | Environmental Protection Agency - Region 9 | 4916 | 041 | 0224 | 0639-03900 |
1998/03/00 | Montrose joint gw FS section 5, gw remedial scenarios (draft) | C H 2 M Hill | Environmental Protection Agency - Region 9 | 4917 | 041 | 0322 | 0639-03901 |
1998/03/00 | Montrose joint gw FS section 5, gw remedial scenarios (draft) | C H 2 M Hill | Environmental Protection Agency - Region 9 | 4918 | 041 | 0464 | 0639-03902 |
1998/03/00 | Montrose joint gw FS section 5, gw remedial scenarios (strikeout draft) | C H 2 M Hill | Environmental Protection Agency - Region 9 | 4919 | 041 | 0601 | 0639-03903 |
1998/03/00 | Montrose joint gw FS section 6, detailed screening of process options for treatment of COCs (draft), w/marginalia | C H 2 M Hill | Environmental Protection Agency - Region 9 | 4920 | 041 | 0739 | 0639-03908 |
1998/03/00 | Montrose joint gw FS section 7, evaluation of discharge & ancillary treatment technology options (draft), w/marginalia | C H 2 M Hill | Environmental Protection Agency - Region 9 | 4921 | 041 | 0750 | 0639-03909 |
1998/03/00 | Montrose joint gw FS section 8, development & analysis of treatment trains (draft) | C H 2 M Hill | Environmental Protection Agency - Region 9 | 4922 | 041 | 0776 | 0639-03910 |
1998/03/00 | Montrose joint gw FS section 10, detailed analysis & comparison of alternatives (strikeout draft), w/marginalia | C H 2 M Hill | Environmental Protection Agency - Region 9 | 4923 | 041 | 0797 | 0639-03911 |
1998/03/00 | 4 Montrose joint gw FS figures (draft), w/marginalia | C H 2 M Hill | Environmental Protection Agency - Region 9 | 4924 | 041 | 0851 | 0639-94148 |
1998/03/00 | Draft revised soil FS outline for 3/98 monthly mtg | Montrose Chemical Corp | Environmental Protection Agency - Region 9 | 4925 | 041 | 0854 | 0639-94152 |
1998/03/03 | Memo: Requests more information on FBR (fluidized bed reactor) in FS rpt | Jeffrey Dhont / Environmental Protection Agency - Region 9 | Hooshang Nezafati / C H 2 M Hill | 4926 | 041 | 0859 | 0639-94336 |
1998/03/05 | Revised 3rd installment comments on sections 5 & 6 of RI, w/fax TL to J Dhont fr F Lewis | C H 2 M Hill | Environmental Protection Agency - Region 9 | 4927 | 041 | 0861 | 0639-02818 |
1998/03/05 | Memo: Review of 2/3/98 preliminary final gw RI rpt, Del Amo study area | Hooshang Nezafati / C H 2 M Hill | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4928 | 041 | 0868 | 0639-02828 |
1998/03/05 | Memo: Request for information for Montrose RI rpt, w/fax TL to J Dhont fr P Torrey | Hooshang Nezafati / C H 2 M Hill | Andrew Halliburton / Hargis & Assoc, Inc | 4929 | 041 | 0878 | 0639-94154 |
1998/03/06 | Monthly inspection & maintenance rpts 8/96-5/98, w/TLs to J Dhont | John Kallok / Kallok Enterprises, Inc | Environmental Protection Agency - Region 9 | 4930 | 041 | 0883 | 0639-02318 |
1998/03/06 | Memo: QA/QC issues re Montrose RI data | Hooshang Nezafati / C H 2 M Hill | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4931 | 041 | 0933 | 0639-94118 |
1998/03/09 | Ltr: Discusses & transmits EPA comments on 2/3/98 check draft, Del Amo gw RI, w/attch & TLs | Jeffrey Dhont / Environmental Protection Agency - Region 9 | Chuck Paine / Shell Oil Co | 4932 | 041 | 0940 | 0639-02939 |
1998/03/09 | Joint gw FS table 10-3, remedial alternative costs, present worth calculations for years 31-100, w/fax TL to J Dhont fr H Nezafati | C H 2 M Hill | Environmental Protection Agency - Region 9 | 4933 | 041 | 0957 | 0639-94438 |
1998/03/11 | Response to 2/20/98 DTSC comments on EPA revision to draft joint gw FS, w/TL to G Conti fr J Dhont | Environmental Protection Agency - Region 9 | CA Environmental Protection Agency - Dept of Toxic Substances Control | 4934 | 041 | 0961 | 0639-02942 |
1998/03/11 | Memo: Data quality issues, w/TL | Jeffrey Dhont / Environmental Protection Agency - Region 9 | Hooshang Nezafati / C H 2 M Hill | 4935 | 041 | 0987 | 0639-94348 |
1998/03/12 | Memo: Response to 3/5/98 request for information for Montrose RI rpt, w/fax TL to H Nezafati fr A Halliburton | Andrew Halliburton / Hargis & Assoc, Inc | Hooshang Nezafati / C H 2 M Hill | 4936 | 041 | 0992 | 0639-02943 |
1998/03/12 | Ltr: Proposes pilot feasibility study (PFS) & transmits PFS outline, Del Amo study area, soils OU (AOC #92-13), w/encl | Chuck Paine / Shell Oil Co | Dante Rodriguez / Environmental Protection Agency - Region 9 | 4937 | 041 | 1002 | 0639-03000 |
1998/03/12 | Ltr: Follows up 1/29/98 ltr re search to identify new contract analytical lab (per AOC 92-13) & transmits 6/30/97 quality assurance mgt plan, w/o encl | Chuck Paine / Shell Oil Co | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4938 | 041 | 1013 | 0639-94146 |
1998/03/12 | Memo: Summarizes UT-flagged data fr draft Montrose RI rpt, w/fax TL to J Dhont fr H Nezafati, 3/14/98 | John Dolegowski / C H 2 M Hill | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4939 | 041 | 1015 | 0639-94155 |
1998/03/13 | Supplement to joint gw risk assessment for Montrose & Del Amo sites (draft) | C H 2 M Hill | Environmental Protection Agency - Region 9 | 4940 | 041 | 1020 | 0639-04635 |
1998/03/16 | Memo: Request for Montrose RI data, w/fax FL to J Dhont fr H Nezafati, 3/17/98 | John Dolegowski / C H 2 M Hill | Andrew Halliburton / Hargis & Assoc, Inc | 4941 | 041 | 1204 | 0639-94156 |
1998/03/17 | Mtg agenda: Torrance monthly project mtg, 3/18/98, w/marginalia & fax TL to J Dhont fr P Sundberg | Montrose Chemical Corp | Environmental Protection Agency - Region 9 | 4942 | 041 | 1208 | 0639-94439 |
1998/03/18 | Draft DNAPL FS rpt outline for 3/98 monthly mtg | Montrose Chemical Corp | Environmental Protection Agency - Region 9 | 4943 | 041 | 1211 | 0639-02816 |
1998/03/19 | Montrose joint gw FS section 2, physical characteristics & conceptual model (draft) | C H 2 M Hill | Environmental Protection Agency - Region 9 | 4944 | 041 | 1221 | 0639-03899 |
1998/03/19 | TL: Draft Montrose joint gw FS section 2, 4, 5, 6, 7 & 8 | Hooshang Nezafati / C H 2 M Hill | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4945 | 041 | 1326 | 0639-94147 |
1998/03/20 | Montrose RI section 7.0, references, w/TL to J Dhont fr P Torrey | C H 2 M Hill | Environmental Protection Agency - Region 9 | 4946 | 041 | 1328 | 0639-03796 |
1998/03/23 | TL: Montrose joint gw FS sections 2 & 5 | Hooshang Nezafati / C H 2 M Hill | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4947 | 041 | 1348 | 0639-94157 |
1998/03/24 | TL: Section 1.0 of Montrose RI, w/TL header to J Dhont fr P Torrey | Peter Torrey / C H 2 M Hill | Steve O'Rourke / US Dept of Justice - Environmental Enforcement Section | 4948 | 041 | 1350 | 0639-94158 |
1998/03/24 | Ltr: EPA intentions re state ARARs for compound p-CBSA in gw, Montrose & Del Amo sites (draft), w/fax TL to G Conti fr J Dhont | Michael Montgomery / Environmental Protection Agency - Region 9 | Nennete Alvarez / CA Environmental Protection Agency - Dept of Toxic Substances Control | 4949 | 041 | 1352 | 0639-94159 |
1998/03/25 | Ltr: Transmits Montrose RI section 1, joint gw FS (JGWFS) appendix A & 4 figures, w/o app A & figs, w/sect 1 | C H 2 M Hill | Environmental Protection Agency - Region 9 | 4950 | 041 | 1356 | 0639-04794 |
1998/03/25 | TL: Ltrs (4) pertaining to site | Jeffrey Dhont / Environmental Protection Agency - Region 9 | Kim Christmann / CA Environmental Protection Agency - Dept of Toxic Substances Control | 4951 | 041 | 1478 | 0639-94329 |
1998/03/25 | Memo: Appropriation requests & raw materials used for DDT manufacture | Jeffrey Dhont / Environmental Protection Agency - Region 9 | Hooshang Nezafati / C H 2 M Hill | 4952 | 041 | 1480 | 0639-94350 |
1998/03/26 | Memo: Request for documents re Montrose litigation | Jeffrey Dhont / Environmental Protection Agency - Region 9 | M Brenner / C A C I International Inc | 4953 | 041 | 1482 | 0639-94351 |
1998/03/27 | Ltr: Comments on stockpile & post-remedial excavation confirmation rpt, parcel A, rpt #3-10, & soil boring rpt, parcel A, for Boeing Realty | J Ross / CA Regional Water Quality Control Board - Los Angeles Basin Region | Michael Young / Integrated Environmental Services | 4954 | 041 | 1484 | 0639-94160 |
1998/03/30 | Tables 5.1-5.15 for draft Montrose RI | C H 2 M Hill | Environmental Protection Agency - Region 9 | 4955 | 041 | 1486 | 0639-03547 |
1998/03/30 | Montrose joint gw FS section 2, physical characteristics & conceptual model (draft) | C H 2 M Hill | Environmental Protection Agency - Region 9 | 4956 | 041 | 1531 | 0639-03906 |
1998/03/30 | Montrose joint gw FS section 4, preliminary screening & evaluation of technologies & process options for COCs (draft), w/marginalia | C H 2 M Hill | Environmental Protection Agency - Region 9 | 4957 | 041 | 1641 | 0639-03907 |
1998/03/31 | Ltr: Disregard legally privileged & confidential headers & footers on final draft DNAPL FSP & QAPP, w/fax TL to J Dhont fr M Palmer, 4/1/98 | Michael Palmer / Hargis & Assoc, Inc | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4958 | 041 | 1690 | 0639-94161 |
1998/04/00 | Draft figures 2-5a, 2-28a & E-2 for joint gw FS | C H 2 M Hill | Environmental Protection Agency - Region 9 | 4959 | 041 | 1693 | 0639-94564 |
1998/04/02 | Memo: Comments on technical memo outlining Montrose Chem draft ecological risk assessment, methodology, 1/12/97, w/TL to H Nezafati fr J Dhont, 4/8/98 | Ned Black / Environmental Protection Agency - Region 9 | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4960 | 041 | 1696 | 0639-94162 |
1998/04/03 | Montrose RI section 6, containment fate & transport | C H 2 M Hill | Environmental Protection Agency - Region 9 | 4961 | 041 | 1700 | 0639-04815 |
1998/04/03 | Memo: Review of FSP & QAPP DNAPL evaluation, 2/27/98 | Richard Haimann / C H 2 M Hill | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4962 | 041 | 1745 | 0639-94338 |
1998/04/08 | Screening of combined remedial scenarios fr draft joint gw FS (JGWFS), w/marginalia | C H 2 M Hill | Environmental Protection Agency - Region 9 | 4963 | 041 | 1751 | 0639-04817 |
1998/04/08 | Memo: Response to agency comments - post-demolition risk assessment, Boeing realty corp c-6 facility, parcel A | James Ross / CA Regional Water Quality Control Board - Los Angeles Basin Region | Michael Young / Integrated Environmental Services | 4964 | 041 | 1761 | 0639-94339 |
1998/04/09 | Revised pilot feasibility study (PFS) outline, Del Amo study area, soils OU (AOC #92-13), w/TL to D Rodriguez fr C Paine | Shell Oil Co | Environmental Protection Agency - Region 9 | 4965 | 041 | 1764 | 0639-03006 |
1998/04/09 | Memos: Notification of Del Amo project field activities & sample loading forecasts for 10/31/96-5/22/98, w/fax TLs to J Dhont fr J Dudley | John Dudley / Dames & Moore | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4966 | 041 | 1773 | 0639-03394 |
1998/04/10 | TL: Material responsive to 3/26/98 email | Walter Brown / C A C I International Inc | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4967 | 041 | 2097 | 0639-94352 |
1998/04/14 | Ltr: Transmits revised DNAPL & soil FS outlines w/marginalia & encls | Paul Sundberg / Montrose Chemical Corp | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4968 | 041 | 2099 | 0639-04801 |
1998/04/14 | Ltr: Transmits redline/strikeout text fr draft response to EPA 3/9/98 comments on "check draft" final gw RI rpt, w/encl | C Paine / Shell Oil Co | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4969 | 041 | 2115 | 0639-04807 |
1998/04/14 | Ltr: EPA intentions re state ARARs for compound p-CBSA in gw, Montrose & Del Amo sites | Michael Montgomery / Environmental Protection Agency - Region 9 | Nennete Alvarez / CA Environmental Protection Agency - Dept of Toxic Substances Control | 4970 | 041 | 2166 | 0639-94341 |
1998/04/15 | EPA comments on sect 2 of draft joint gw FS, w/sec 2 (physical characteristics & conceptual model), marginalia, & TL to H Nezafati fr J Dhont 4/17/98 | C H 2 M Hill | Environmental Protection Agency - Region 9 | 4971 | 041 | 2169 | 0639-04813 |
1998/04/15 | EPA comments on section 2 & 5 of draft joint gw FS, w/sec 5 (gw remedial scenarios) | C H 2 M Hill | Environmental Protection Agency - Region 9 | 4972 | 041 | 2290 | 0639-04814 |
1998/04/15 | EPA comments on section 10 of draft joint gw FS (JGWFS), w/sec 10 (detailed analysis & comparison of alternatives) | C H 2 M Hill | Environmental Protection Agency - Region 9 | 4973 | 041 | 2422 | 0639-04816 |
1998/04/15 | Ltr: Torrance AOC #85-04 re naming of parties for submittals, project coordinators & notices, w/list of current parties | Frank Bachman / Montrose Chemical Corp | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4974 | 041 | 2470 | 0639-94342 |
1998/04/16 | Ltr: Removal of soil contaminated with DDT | Thomas Greenland / Union Pacific Railroad Co | Robert Howard / Latham & Watkins (Attorneys) | 4975 | 041 | 2473 | 0639-94343 |
1998/04/17 | Memo: Transmits analytical results for soil in 6-20CY bins, w/encls | James Gorley / Union Pacific Railroad Co | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4976 | 041 | 2476 | 0639-04800 |
1998/04/17 | Ltr: Union Pacific/Montrose access agreement | Robert Howard / Latham & Watkins (Attorneys) | Thomas Greenland / Union Pacific Railroad Co | 4977 | 041 | 2490 | 0639-94344 |
1998/04/20 | Memo: Assessment of potential impacts of gw & subsurface conditions on indoor air quality in residential community near Del Amo & Montrose sites | Gabriel Silva / C H 2 M Hill | Dante Rodriguez / Environmental Protection Agency - Region 9 | 4978 | 041 | 2493 | 0639-04809 |
1998/04/21 | Ltr: No further action for shallow soil - parcel A, Boeing Realty Corp, C-6 facility, w/encl | James Ross / CA Regional Water Quality Control Board - Los Angeles Basin Region | Mario Stavale / Boeing Realty Corp | 4979 | 041 | 2520 | 0639-94355 |
1998/04/21 | Ltr: History of Union Pacific soils & debris at former Montrose plant, w/TL | Jeffrey Dhont / Environmental Protection Agency - Region 9 | James Gorley / Union Pacific Railroad Co | 4980 | 041 | 2525 | 0639-94363 |
1998/04/22 | Agenda for Torrance monthly project mtg, w/TL to Dhont & Lyons fr Sundberg | Paul Sundberg / Montrose Chemical Corp | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4981 | 041 | 2530 | 0639-94345 |
1998/04/22 | Agenda for Torrance monthly project mtg, w/marginalia | Paul Sundberg / Montrose Chemical Corp | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4982 | 041 | 2533 | 0639-94346 |
1998/04/23 | Technical Memo: Del Amo field oversight - collection of gw split samples, w/attchs | Hooshang Nezafati / C H 2 M Hill | Dante Rodriguez / Environmental Protection Agency - Region 9 | 4983 | 041 | 2535 | 0639-04802 |
1998/04/24 | Ltr: Transmits 2nd installment of draft (sec 6) responses to EPA 3/9/98 comments on "check draft" final gw RI rpt, w/encl & marginalia | C Paine / Shell Oil Co | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4984 | 041 | 2546 | 0639-04803 |
1998/04/27 | EPA talking points conference call 4/27/98 | Environmental Protection Agency - Region 9 | - | 4985 | 041 | 2579 | 0639-04804 |
1998/04/27 | Data Validation Rpt: Case 26016, Memo #01 for volatiles & semivolatiles, collected 2/26 & 3/4/98, w/TL to J Dhont fr J Berges | Margaret May / Lockheed Martin Corp | Environmental Protection Agency - Region 9 | 4986 | 041 | 2589 | 0639-04808 |
1998/04/27 | Memo: Union Pacific confirms 5 stipulations set by EPA | James Gorley / Union Pacific Railroad Co | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4987 | 041 | 2606 | 0639-94353 |
1998/04/27 | Ltr: Comments on parcel B supplemental sampling & analysis plan - Boeing C-6 facility, LA CA | James Ross / CA Regional Water Quality Control Board - Los Angeles Basin Region | Michael Young / Integrated Environmental Services | 4988 | 041 | 2608 | 0639-94354 |
1998/04/30 | Action plan for Del Amo/Montrose community interagency partnering (draft version) | Environmental Protection Agency - Region 9 | - | 4989 | 041 | 2610 | 0639-04805 |
1998/04/30 | Ltr: Transmits map, communication chart & agenda re 5/14 partnership mtg, w/encls | Cynthia Babich / Del Amo Action Committee | - | 4990 | 041 | 2634 | 0639-94347 |
1998/05/01 | Ltr: Figures in joint gw FS rpt | John Dudley / Dames & Moore | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4991 | 041 | 2639 | 0639-94356 |
1998/05/04 | Ltr: Transmits pilot FS for shallow soils | C Paine / Shell Oil Co | Dante Rodriguez / Environmental Protection Agency - Region 9 | 4992 | 042 | 0001 | 0639-04810 |
1998/05/04 | Ltr: Comments on FSP & QAPP DNAPL eval 2/27/98 | Jeffrey Dhont / Environmental Protection Agency - Region 9 | Frank Bachman / Montrose Chemical Corp | 4993 | 042 | 0014 | 0639-94357 |
1998/05/04 | Excerpt: Risk-contouring approach (fr supplement to joint gw risk assessment) w/marginalia & TL to H Nezafati fr J Dhont | Environmental Protection Agency - Region 9 | - | 4994 | 042 | 0021 | 0639-94364 |
1998/05/04 | Ltr: Disclaimer statement at beginning of joint gw FS rpt, w/TL to M Palmer fr J Dhont | John Dudley / Dames & Moore | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4995 | 042 | 0024 | 0639-94365 |
1998/05/05 | Memo: Transmits ch 3 (chemical data quality) of RI rpt, w/encl, marginalia & TL to H Nezafati fr J Dhont 5/6/98 | David Taylor / Environmental Protection Agency - Region 9 | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4996 | 042 | 0027 | 0639-04811 |
1998/05/05 | Memo: Review of joint gw risk assessment | Stanford Smucker / Environmental Protection Agency - Region 9 | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 4997 | 042 | 0039 | 0639-94366 |
1998/05/07 | Ltr: Proposal for well abandonment - Boeing C-6 facility, LA | J Ross / CA Regional Water Quality Control Board - Los Angeles Basin Region | Chris Stoker / Integrated Environmental Services | 4998 | 042 | 0041 | 0639-94359 |
1998/05/08 | Ltr: Authorization to implement modification of parcel B supplemental SAP Boeing C-6 facility, LA, CA | James Ross / CA Regional Water Quality Control Board - Los Angeles Basin Region | Chris Stoker / Integrated Environmental Services | 4999 | 042 | 0043 | 0639-94360 |
1998/05/11 | Contaminant mass reduction (fr draft paragraph of Del Amo gw RI rpt) w/TL to J Dhont fr J Dudley | Dames & Moore | - | 5000 | 042 | 0045 | 0639-94368 |
1998/05/12 | Ltr: Site-specific factors related to contaminant transport, w/sampling data | Jeffrey Dhont / Environmental Protection Agency - Region 9 | Dean Baker / Univ of California, Irvine | 5001 | 042 | 0048 | 0639-94362 |
1998/05/13 | Ltr: Notification of transmittal of draft proposed plan, gen factsheet version & technical & expanded version & request for review, w/encls | Jeffrey Dhont / Environmental Protection Agency - Region 9 | Gloria Conti / CA Environmental Protection Agency - Dept of Toxic Substances Control | 5002 | 042 | 0055 | 0639-94361 |
1998/05/13 | Notice & correction of error in total hazard index calculations re final version of joint gw risk assessment, w/TL to G Conti fr J Dhont | Environmental Protection Agency - Region 9 | - | 5003 | 042 | 0060 | 0639-94367 |
1998/05/15 | Final gw RI rpt, Del Amo study area, v1 of 3 (text, tables & figures), w/responses to EPA comments, distribution list & TL to J Dhont fr C Paine | Dames & Moore | Shell Oil Co | 5004 | 042 | 0063 | 0639-04641 |
1998/05/15 | Final gw RI rpt, Del Amo study area, v2 of 3 (appendices A-D) | Dames & Moore | Shell Oil Co | 5005 | 042 | 0614 | 0639-04642 |
1998/05/15 | Final gw RI rpt, Del Amo study area, v3 of 3 (appendices E-J) | Dames & Moore | Shell Oil Co | 5006 | 042 | 1288 | 0639-04643 |
1998/05/15 | TL: Revised pp for final joint gw risk assessment, Montrose & Del Amo sites | J Morabito / McLaren Hart Environmental Engineering Corp | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 5007 | 043 | 0001 | 0639-94563 |
1998/05/18 | Supplement to joint gw risk assessment for Montrose & Del Amo sites | C H 2 M Hill | Environmental Protection Agency - Region 9 | 5008 | 043 | 0003 | 0639-04636 |
1998/05/18 | Final joint gw FS for Montrose & Del Amo sites | C H 2 M Hill | Environmental Protection Agency - Region 9 | 5009 | 043 | 0188 | 0639-04638 |
1998/05/18 | Final RI rpt for Montrose site, v1 of 2 | Environmental Protection Agency - Region 9 | - | 5010 | 043 | 1198 | 0639-04639 |
1998/05/18 | Final RI rpt for Montrose site, v2 of 2 | Environmental Protection Agency - Region 9 | - | 5011 | 043 | 1990 | 0639-04640 |
1998/05/20 | Memo: Submitting docs to file, considered approved & final pending public comment, re dual site gw OU for Montrose/Del Amo sites | Jeffrey Dhont / Environmental Protection Agency - Region 9 | - | 5012 | 043 | 3281 | 0639-94565 |
1998/05/20 | Memo: Response to 6/24/97 National Remedy Review Board (NRRB) memo on Montrose/Del Amo gw OU | Keith Takata / Environmental Protection Agency - Region 9 | Bruce Means / Environmental Protection Agency - Office of Emergency & Remedial Response | 5013 | 043 | 3284 | 0639-94566 |
1998/05/21 | Compendium of CERCLA guidance documents, Montrose & Del Amo sites, gw OU | Environmental Protection Agency - Region 9 | - | 5014 | 043 | 3287 | 0639-04644 |
1992/03/26 | Final PRP search rpt: Index to parcel/tract maps & title docs 1-972 collected in PRP search but not used in final rpt, 1922-91 (privileged, FOIA ex 6) | Environmental Protection Agency - Region 9 | - | 5015 | 044 | 0001 | 0639-02534 |
1995/00/00 | Site mgt plan - fiscal 1995/1996 (privileged, FOIA ex 5) | Jeffrey Dhont / Environmental Protection Agency - Region 9 | - | 5016 | 044 | 0003 | 0639-02134 |
1998/06/00 | Fact sheet: EPA proposes gw cleanup plan (proposed plan - general version) | Environmental Protection Agency - Region 9 | - | 5017 | 044 | 0005 | 0639-04647 |
1998/06/00 | Remedy proposed plan for dual site gw OU, Montrose & Del Amo sites (proposed plan - technical & expanded version) | Jeffrey Dhont / Environmental Protection Agency - Region 9 | - | 5018 | 044 | 0020 | 0639-04648 |
1998/06/10 | Ltr: Transmits 5 rpts essential to cleanup proposal, w/o rpts & acknowledgment form, w/document list | Andrew Bain / Environmental Protection Agency - Region 9 | Anthony Lynch / City of Carson - Public Library | 5019 | 044 | 0079 | 0639-94604 |
1998/06/10 | Ltr: Transmits 5 rpts essential to cleanup proposal, w/o rpts & acknowledgment form, w/document list | Andrew Bain / Environmental Protection Agency - Region 9 | Evelyn Harris / City of Torrance - Civic Center Library | 5020 | 044 | 0083 | 0639-94605 |
1998/06/26 | Ltr: Announces issuance of proposed plan for dual site gw OU & transmits proposed plan, joint gw FS, gw risk assessment addendum & RI, w/o attchs | John Lyons / Environmental Protection Agency - Region 9 - Office of Regional Counsel | Karl Lytz / Latham & Watkins (Attorneys) | 5021 | 044 | 0087 | 0639-94606 |
1998/06/26 | Memo: Initial list of recipients of technical & expanded version of proposed plan for dual site gw OU, w/TRICO labels, proposed plan TLs & 6/19/98 ltr | Jeffrey Dhont / Environmental Protection Agency - Region 9 | - | 5022 | 044 | 0090 | 0639-04649 |
1954/05/19 | Certificate of occupancy for Lindane pilot plant - S Normandie Ave | City of Los Angeles | Stauffer Chemical Co | 5023 | 044 | 0107 | 0639-95120 |
1955/02/01 | Memo: Transmits 5-part rpt re interrelated activities of Montrose & Stauffer w/encl | Lloyd Cummings / Stauffer Chemical Co | J Kettle / Stauffer Chemical Co | 5024 | 044 | 0109 | 0639-04678 |
1956/02/01 | Memo: Transmits 5-part rpt re Stauffer-Montrose related activities w/attch | Lloyd Cummings / Stauffer Chemical Co | J Kettle / Stauffer Chemical Co | 5025 | 044 | 0138 | 0639-04679 |
1957/07/30 | Memo: Transmits 7-part rpt re Stauffer-Montrose related activities w/attch | Lloyd Cummings / Stauffer Chemical Co | J Kettle / Stauffer Chemical Co | 5026 | 044 | 0182 | 0639-04680 |
1958/10/07 | Memo: Transmits 7-part rpt re Stauffer-Montrose system of charges w/encls | Lloyd Cummings / Stauffer Chemical Co | J Kettle / Stauffer Chemical Co | 5027 | 044 | 0210 | 0639-04681 |
1959/00/00 | Relationship of Stauffer & Montrose at Henderson & Torrance plants, LA & San Francisco offices | - | - | 5028 | 044 | 0237 | 0639-04682 |
1960/00/00 | Relationship of Stauffer & Montrose at Henderson & Torrance plants, LA & San Francisco offices | - | - | 5029 | 044 | 0263 | 0639-04683 |
1961/04/30 | Detail of DDT concentrates production & inventory - DDT 75% concentrate grinding [MON400] | Montrose Chemical Corp | - | 5030 | 044 | 0286 | 0639-95128 |
1961/06/30 | Summary of DDT inventories [MON400] | Montrose Chemical Corp | - | 5031 | 044 | 0288 | 0639-95129 |
1963/02/28 | Summary of DDT inventories [SCC004] | Montrose Chemical Corp | - | 5032 | 044 | 0290 | 0639-95127 |
1963/08/19 | Memo: Transmits rpt on Stauffer & Montrose NJ charges to Montrose of CA, w/encl | Lloyd Cummings / Stauffer Chemical Co | J Orr / Stauffer Chemical Co | 5033 | 044 | 0292 | 0639-04684 |
1964/08/13 | Memo: Transmits rpt on Stauffer & Baldwin-Montrose charges to Montrose of CA w/encl | Lloyd Cummings / Stauffer Chemical Co | J Orr / Stauffer Chemical Co | 5034 | 044 | 0322 | 0639-04685 |
1966/02/00 | Summary of raw materials consumed & by-product inventories [MON400] | Montrose Chemical Corp | - | 5035 | 044 | 0351 | 0639-95126 |
1973/01/23 | Memo: Montrose spent acid [SCC005] | R Campbell / Stauffer Chemical Co | E Galloway / Stauffer Chemical Co | 5036 | 044 | 0353 | 0639-95121 |
1977/00/00 | Farm chemicals handbook 1977 - cover p & pD80 re DDT | - | - | 5037 | 044 | 0355 | 0639-95130 |
1985/07/00 | Community relations plan, w/appendix A | Metcalf & Eddy, Inc | Environmental Protection Agency - Region 9 | 5038 | 044 | 0358 | 0639-00482 |
1989/01/24 | Memo: Status of contaminated groundwater & limitations on disposal & reuse | Sylvia Lowrance / Environmental Protection Agency - Office of Solid Waste & Emergency Response | Jeff Zelikson / Environmental Protection Agency - Region 9 | 5039 | 044 | 0403 | 0639-95170 |
1996/11/00 | Community relations plan, w/appendices A-C | C H 2 M Hill | Environmental Protection Agency - Region 9 | 5040 | 044 | 0406 | 0639-02277 |
1997/08/21 | Review draft RI rpt (v1 of 2) | Hargis & Assoc, Inc | Environmental Protection Agency - Region 9 | 5041 | 044 | 0445 | 0639-04702 |
1997/08/21 | Review draft RI rpt (v2 of 2) - tables & illustrations | Hargis & Assoc, Inc | Environmental Protection Agency - Region 9 | 5042 | 044 | 0878 | 0639-04703 |
1998/06/00 | Fact Sheet: EPA proposes groundwater cleanup plan | Environmental Protection Agency - Region 9 | - | 5043 | 044 | 1300 | 0639-04692 |
1998/06/00 | Remedy proposed plan - dual site groundwater operable unit (OU) - technical & expanded version | Jeffrey Dhont / Environmental Protection Agency - Region 9 | - | 5044 | 044 | 1315 | 0639-04693 |
1998/06/00 | Fact Sheet: EPA proposes groundwater cleanup plan (Spanish version) | Environmental Protection Agency - Region 9 | - | 5045 | 044 | 1374 | 0639-04694 |
1998/06/00 | Remedy proposed plan - dual site groundwater operable unit (OU) - technical & expanded version (Spanish version) | Jeffrey Dhont / Environmental Protection Agency - Region 9 | - | 5046 | 044 | 1388 | 0639-04695 |
1998/06/00 | Public Notice: EPA announces public comment period (7/2/98-7/31/98) w/notice of community mtg (7/25/98) re dual-site groundwater proposed plan | Environmental Protection Agency - Region 9 | - | 5047 | 044 | 1446 | 0639-95134 |
1998/06/03 | Memo: Transmits 6 technical docs w/encl & doc list | Michael Palmer / Hargis & Assoc, Inc | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 5048 | 044 | 1449 | 0639-04705 |
1998/06/18 | Document transmittal acknowledgement form (5 rpts) w/ltr designating AR repository | Environmental Protection Agency - Region 9 | Dina Cramer / City of Torrance - Civic Center Library | 5049 | 044 | 1475 | 0639-95167 |
1998/06/18 | Advertising order - announces public comment period re dual site groundwater proposed plan (concurrence copy) w/attchs | Environmental Protection Agency - Region 9 | Environmental Protection Agency - Region 9 | 5050 | 044 | 1480 | 0639-95172 |
1998/06/25 | Ltr: Meeting invitations & transmits fact sheets re proposed plan to remediate site groundwater w/encl | Peter Garcia / CA Environmental Protection Agency - Dept of Toxic Substances Control | Del Amo/Montrose Partnership - Subgroup 2 | 5051 | 044 | 1485 | 0639-04687 |
1998/06/29 | Press Release: EPA proposes plan to cleanup groundwater | Environmental Protection Agency - Region 9 | - | 5052 | 044 | 1503 | 0639-95133 |
1998/07/00 | Hard copy of slides used at public meeting (7/25/98) re dual-site groundwater operable unit (OU) cleanup remedy | Jeffrey Dhont / Environmental Protection Agency - Region 9 | - | 5053 | 044 | 1506 | 0639-04688 |
1998/07/01 | Document transmittal acknowledgement form (AR microfilm & index) w/ltr designating AR repository | Environmental Protection Agency - Region 9 | Dina Cramer / City of Torrance - Civic Center Library | 5054 | 044 | 1529 | 0639-94859 |
1998/07/02 | Ltr: Requests technical meeting to review proposed plan for dual site groundwater operable unit (OU) (6/98) w/TL (7/6/98) | Chuck Paine / Del Amo Respondents | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 5055 | 044 | 1533 | 0639-95125 |
1998/07/02 | Ltr: Requests technical review meeting re remedy proposed plan for dual site groundwater operable unit (OU) (6/98) | Chuck Paine / Del Amo Respondents | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 5056 | 044 | 1536 | 0639-95162 |
1998/07/08 | Document transmittal acknowledgement form (AR microfilm & index) w/ltr designating AR repository | Environmental Protection Agency - Region 9 | Theodore Kavich / City of Carson - Public Library | 5057 | 044 | 1538 | 0639-94860 |
1998/07/08 | Document transmittal acknowledgement form (5rpts) w/ltr designating AR repository | Environmental Protection Agency - Region 9 | Theodore Kavich / City of Carson - Public Library | 5058 | 044 | 1542 | 0639-95166 |
1998/07/13 | Chlorinated solvent concentration & model-predicted benzene concentration scenarios fr joint gw FS - app A w/TL to J Dhont fr J Dudley | Dames & Moore | Environmental Protection Agency - Region 9 | 5059 | 044 | 1547 | 0639-04689 |
1998/07/13 | Ltr: Del Amo Respondents request 30-day extension of public comment period | Chuck Paine / Del Amo Respondents | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 5060 | 044 | 1569 | 0639-95139 |
1998/07/13 | Ltr: Del Amo respondents request 30-day extension of public comment period w/TL to J Dhont fr J Dudley (faxed 7/13/98) | Chuck Paine / Del Amo Respondents | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 5061 | 044 | 1571 | 0639-95165 |
1998/07/13 | Ltr: Del Amo respondents request 30-day extension of public comment period w/TL to J Dhont fr J Dudley (faxed 7/14/98) | Chuck Paine / Del Amo Respondents | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 5062 | 044 | 1574 | 0639-95168 |
1998/07/14 | Ltr: Reponds to 1/30/98 ltr re joint groundwater feasibility study & remedial selection | Jeffrey Dhont / Environmental Protection Agency - Region 9 | Chuck Paine / Del Amo Respondents | 5063 | 044 | 1577 | 0639-95123 |
1998/07/14 | Ltr: Technical meeting request | Jeffrey Dhont / Environmental Protection Agency - Region 9 | Chuck Paine / Del Amo Respondents | 5064 | 044 | 1580 | 0639-95143 |
1998/07/20 | Ltr: Transmits p 5-46 of final joint groundwater FS (5/18/98) w/attch | Jeffrey Dhont / Environmental Protection Agency - Region 9 | - | 5065 | 044 | 1582 | 0639-95132 |
1998/07/20 | Memo: Transmits p 5-46 of final joint groundwater FS (5/18/98) w/attch | John Dolegowski / C H 2 M Hill | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 5066 | 044 | 1585 | 0639-95161 |
1998/07/21 | Ltr: Transmits ZIP disc with text narrative of RI rpt & joint groundwater FS w/key to file names & w/o disc | Jeffrey Dhont / Environmental Protection Agency - Region 9 | Michael Palmer / Hargis & Assoc, Inc | 5067 | 044 | 1588 | 0639-95131 |
1998/07/21 | Public Notice: EPA extends public comment period to 8/30/98 re dual-site groundwater proposed plan, w/marginalia | Environmental Protection Agency - Region 9 | - | 5068 | 044 | 1593 | 0639-95135 |
1998/07/21 | Advertising order - extends public comment period re dual site groundwater proposed plan (concurrence copy) w/attchs | Environmental Protection Agency - Region 9 | Environmental Protection Agency - Region 9 | 5069 | 044 | 1595 | 0639-95171 |
1998/07/24 | Public Notice: EPA extends public comment period to 8/30/98 re dual-site groundwater proposed plan, w/proof of publication fr Daily Breeze | Environmental Protection Agency - Region 9 | - | 5070 | 044 | 1600 | 0639-95136 |
1998/07/25 | Transcript of public meeting - dual site gw operable unit (OU) proposed plan workshop & public meeting | Environmental Protection Agency - Region 9 | - | 5071 | 044 | 1602 | 0639-04690 |
1998/07/28 | Ltr: Confirms that 30-day extension includes Montrose & other DDT defendants in US v Montrose | Karl Lytz / Latham & Watkins (Attorneys) | John Lyons / Environmental Protection Agency - Region 9 | 5072 | 044 | 1778 | 0639-95144 |
1998/07/28 | Ltr: Comments re remedy proposed plan for dual site groundwater operable unit (OP) | Chris Guerre / CA Environmental Protection Agency - Dept of Toxic Substances Control | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 5073 | 044 | 1780 | 0639-95157 |
1998/07/30 | Ltr: Requests extension of comment period on proposed plan | Alistaire Callender / Hart Crowser Inc | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 5074 | 044 | 1782 | 0639-95146 |
1998/08/04 | Memo: Documents in question reside in both repositories | Jeffrey Dhont / Environmental Protection Agency - Region 9 | File | 5075 | 044 | 1784 | 0639-95151 |
1998/08/05 | Ltr: Del Amo Respondents request additional 15-day extension of public comment period | Chuck Paine / Del Amo Respondents | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 5076 | 044 | 1786 | 0639-95138 |
1998/08/05 | Ltr: Del Amo Respondents request additional 15-day extension of public comment period w/TL | Chuck Paine / Del Amo Respondents | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 5077 | 044 | 1788 | 0639-95145 |
1998/08/05 | Ltr: Del Amo respondents request additional 15-day extension of public comment period | Chuck Paine / Del Amo Respondents | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 5078 | 044 | 1791 | 0639-95163 |
1998/08/06 | Ltr: Request to extend public comment period denied w/TL | Jeffrey Dhont / Environmental Protection Agency - Region 9 | Alistaire Callender / Hart Crowser Inc | 5079 | 044 | 1794 | 0639-95147 |
1998/08/06 | Ltr: Request to extend public comment period denied, w/TLs | Jeffrey Dhont / Environmental Protection Agency - Region 9 | Chuck Paine / Del Amo Respondents | 5080 | 044 | 1798 | 0639-95148 |
1998/08/10 | Ltr: Extension of public comment period to 8/30/98 | John Lyons / Environmental Protection Agency - Region 9 - Office of Regional Counsel | Karl Lytz / Latham & Watkins (Attorneys) | 5081 | 044 | 1804 | 0639-95142 |
1998/08/13 | Technical Memo (draft): Checking of cost estimate tables in joint groundwater FS Rpt - appendix C | Hooshang Nezafati / C H 2 M Hill | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 5082 | 044 | 1806 | 0639-95160 |
1998/08/21 | Groundwater monitoring rpt - 1998 annual re administrative order on consent (AOC) #92-13 w/TL to J Dhont fr C Paine | Dames & Moore | Environmental Protection Agency - Region 9 | 5083 | 044 | 1809 | 0639-04686 |
1998/08/24 | Ltr: Request that public comment period be extended additional 60 days to 10/30/98 | Steven Tekosky / Heller, Ehrman, White & McAuliffe (Attorneys) | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 5084 | 044 | 2197 | 0639-95149 |
1998/08/25 | Comments re remedy proposed plan for dual site groundwater operable unit (OU), w/env & mail receipt #Z350-590-594 (Redacted, FOIA ex 6) | John Carpenter, Resident / City of Torrance | Environmental Protection Agency - Region 9 | 5085 | 044 | 2203 | 0639-04704 |
1998/08/28 | Ltr: Transmits comments on remedy proposed plan - dual site gw operable unit (OU) - technical & expanded version (6/98) re AOC #92-13, w/encls | Chuck Paine / Del Amo Respondents | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 5086 | 044 | 2215 | 0639-04698 |
1998/08/30 | Ltr: Comments re remedy proposed plan for dual site groundwater operable unit (OU) (redacted, FOIA ex 6) | Claire Adams, Resident / City of Torrance | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 5087 | 044 | 2342 | 0639-95173 |
1998/08/30 | Ltr: Comments re remedy proposed plan for dual site groundwater operable unit (OU) (faxed) (Redacted, FOIA ex 6) | Claire Adams, Resident / City of Torrance | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 5088 | 044 | 2345 | 0639-95174 |
1998/08/31 | Ltr: Comments re remedy proposed plan for dual site groundwater operable unit (OU) (6/98), w/exhibits A-D & marginalia by J Dhont | Peter Veregge / Howrey & Simon (Attorneys) | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 5089 | 045 | 0001 | 0639-04696 |
1998/08/31 | Ltr: Transmits comments on remedy proposed plan - dual site gw operable unit (OU) - technical & expanded version (6/98), w/encls | Frank Bachman / Montrose Chemical Corp | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 5090 | 045 | 0161 | 0639-04699 |
1998/08/31 | Ltr: Transmits comments on remedy proposed plan for dual site groundwater operable unit (OU) w/env & attch | Steven Tokosky / Heller, Ehrman, White & McAuliffe (Attorneys) | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 5091 | 045 | 0244 | 0639-04701 |
1998/08/31 | Ltr: Denial of 8/24/98 request for extension of public comment period, w/fax TL | Jeffrey Dhont / Environmental Protection Agency - Region 9 | Steven Tekosky / Heller, Ehrman, White & McAuliffe (Attorneys) | 5092 | 045 | 0302 | 0639-95150 |
1998/08/31 | Listing of computer disc files - Del Amo respondents electronically sent comments re remedy proposed plan for dual site groundwater operable unit (OU) | Dames & Moore | Environmental Protection Agency - Region 9 | 5093 | 045 | 0306 | 0639-95152 |
1998/08/31 | Ltr: Comments re remedy proposed plan for dual site groundwater operable unit (OU) | Joeann Valle / Harbor City/Harbor Gateway Chamber of Commerce | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 5094 | 045 | 0309 | 0639-95155 |
1998/08/31 | Ltr: Comments re remedy proposed plan for dual site groundwater operable unit (OU) (faxed) | Joeann Valle / Harbor City/Harbor Gateway Chamber of Commerce | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 5095 | 045 | 0312 | 0639-95156 |
1998/08/31 | Ltr: DTSC employees (C Guerre) ltr was personal comment not DTSC opinion, w/env | Haissam Salloum / CA Environmental Protection Agency - Dept of Toxic Substances Control | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 5096 | 045 | 0315 | 0639-95158 |
1998/09/03 | ROC: Incorrect version of comments received by EPA fr Howry & Simon for Goodyear Tire & Rubber Co re dual site gw operable unit (OU) remedy w/attchs | Jeffrey Dhont / Environmental Protection Agency - Region 9 | File | 5097 | 045 | 0319 | 0639-04700 |
1998/09/04 | TL: Computer disc copy of Montrose comment ltr (8/31/98) submitted to EPA re proposed groundwater remedy | Robert Howard / Latham & Watkins (Attorneys) | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 5098 | 045 | 0503 | 0639-95122 |
1998/11/16 | Ltr: Comments re remedy proposed plan for dual site groundwater operable unit (OU) (6/98) w/exhibits A-H (late comment) | Neal Marder / Sonnenschein, Nath & Rosenthal | Jeffrey Dhont / Environmental Protection Agency - Region 9 | 5099 | 045 | 0505 | 0639-04697 |
1999/01/20 | Correction of FS cost estimates following spreadsheet numerical error - joint groundwater FS (5/98) | Environmental Protection Agency - Region 9 | - | 5100 | 045 | 0709 | 0639-04691 |
1999/03/22 | Ltr: Concurrence with proposed remedy for dual site groundwater operable unit (OU), w/TL to J Dhont fr G Conti | Nennet Alvarez / CA Environmental Protection Agency - Dept of Toxic Substances Control | John Kemmerer / Environmental Protection Agency - Region 9 | 5101 | 045 | 0792 | 0639-95159 |
1999/03/22 | Ltr: Concurrence with proposed remedy for dual site groundwater operable unit (OU) | Nennet Alvarez / CA Environmental Protection Agency - Dept of Toxic Substances Control | John Kemmerer / Environmental Protection Agency - Region 9 | 5102 | 045 | 0797 | 0639-95169 |
1999/03/30 | Record of decision (ROD) for dual site gw OU, v1 of 2 - declaration & decision summary (03 ROD 02 [Montrose]) (03 ROD 03 [Del Amo]) | Jeffrey Dhont / Environmental Protection Agency - Region 9 | - | 5103 | 045 | 0801 | 0639-04709 |
1999/03/30 | Record of decision (ROD) for dual site gw OU, v2 of 2 - response summary (03 ROD 02 [Montrose]) (03 ROD 03 [Del Amo]) | Jeffrey Dhont / Environmental Protection Agency - Region 9 | - | 5104 | 045 | 1059 | 0639-04710 |