SITE INFORMATION AND CORRESPONDENCE_1997

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L1 Levine-Fricke-Recon ENGINEERS,HVDROGEOLOGISTS&APPLIED SCIENTISTS May 30, 1997 4111.15-005 Ms. Bette Owen Mr. Bill Parks Mr. Brett Hunter Bill Parks Chevron Station Chevron Products Company 6633 Pacific Avenue P.O. Box 5004 Stockton, California 95207 San Ramon, California 9483-0804 Subject: Request for Property Access to Conduct Field Activities at Bill Parks Chevron Station Property, Chevron Station No. 9-6171, Lincoln Center, Stockton, California Dear Ms. Owen, Mr. Hunter, and Mr. Parks: On behalf of the Settling Dry Cleaning Defendants (SDCDs), Levine-Fricke-Recon Inc. (LFR) is requesting access to conduct field activities on the Bill Parks Chevron Station property located at 6633 Pacific Avenue, Stockton, California(the "Subject Property"). This work will be conducted in accordance with the terms and conditions of the Access Agreement to conduct environmental investigation activities on the Subject Property, and as described in the "Work Plan for Environmental Investigation, Lincoln Center, Stockton, California," dated September 23, 1996 and the "Interim Remedial Action Work Plan, Lincoln Center, Stockton, California," dated September 3, 1996. The SDCDs have.proposed to implement certain Interim Remedial Actions (IRAs) at the Lincoln Center site. IRAs are short-term remedial solutions designed to protect public health and the environment during the environmental investigation while long-term cleanup solutions are being developed. A Phase I IRA is currently being developed which will include installing a series of groundwater wells along the eastern border of Lincoln Center to extract chemically affected groundwater from the shallow (A-zone) aquifer. Extracted groundwater will be conveyed through pipelines, to be installed underground, to a centralized treatment unit to be installed at Lincoln Center. The Regional Water Quality Control Board has requested that the Phase I IRA be implemented as soon as possible to avoid further migration of chemically affected groundwater in the A-zone aquifer. Cone Penetrometer Testing (CPT) and Push-In Polyvinyl Chloride (PIPP) Investigation r Field Activities The CPT/PIPP investigation is being conducted to evaluate the subsurface sediments and the distribution of certain hazardous substances present in groundwater beneath Lincoln Center, including the Subject Property. This work will be C ducted as part of the SDCDs' Phase I IRA. 1900 Powell Street, 12th Floor, Emeryville, California 94608-1827 • (510) 652-4500 • fax (510) 652-2246 Offices Worldwide