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L1 Levine•Fricke•Recon <br /> ENOFNEE .WMOGEOLOGIM 4F So scifNTw' <br /> April 20, 1998 4111.38-004 <br /> via fax and U.S. mail <br /> Ms. Bette Owen <br /> Mr. Brett Hunter <br /> Chevron Products Company <br /> P.O. Box 5004 <br /> San Ramon, California 94583-0804 <br /> Subject: Updated Request for Property Access to Conduct Phase I IRA Field Activities at <br /> Chevron Station No. 9-6171, Lincoln Center, Stockton, California (Parcel No. <br /> 097-41-48) <br /> Dear Ms. Owen and Mr. Hunter: <br /> On behalf of the Settling Dry Cleaning Defendants (SDCDs), Levine-Fricke-Recon Inc. (LFR) is <br /> updating our February 27, 1998 request for access to conduct field activities at Chevron Station <br /> No. 9-6171, located at 6633 Pacific Avenue, Stockton, California ("the Subject Property"), to <br /> address changes in the schedule and implementation of the proposed work. As you know, we have <br /> rescheduled field activities so that Chevron's remodeling contractor could complete its work <br /> before LFR's commencement of Phase I IRA field activities. The revised schedule of field <br /> activities will take place in two steps. The first step would include the installation and development <br /> of two groundwater extraction wells. The second step would include the installation of a <br /> groundwater conveyance system and startup of the groundwater extraction and treatment system. <br /> This work will be conducted in accordance with the terms and conditions of the "Lincoln Center <br /> Site Environmental Access Agreement for Chevron Station Property, 6633 Pacific Avenue, <br /> Stockton, California," and as described in the "Work Plan for Environmental Investigation, <br /> Lincoln Center, Stockton, California," dated September 23, 1996, and revised October 15, 1997 <br /> ("the RI/FS Work Plan") and the "Phase I Interim Remedial Action Detailed Plan, Lincoln <br /> Center, Stockton, California," dated February 27, 1998 ("the Phase I IRA Detailed Plan"). <br /> Details of the field activities are presented below. <br /> FIELD ACTIVITIES <br /> Step One: Installation and Development of Extraction Wells <br /> Two groundwater extraction wells will be installed at the locations shown on Figure I. Well <br /> GEW-007A will be installed in the pavement area adjacent to the small planter by the <br /> southeastern station entrance and well GEW-008A will be installed in the northwestern planter. <br /> Groundwater extraction well installation methods are described in Section 5 of the Phase I IRA <br /> Detailed Plan and in Section 2.4 of the Field Sampling Plan(Appendix B to the RI/FS Work <br /> 1900 Powell Street, 12th Floor, rmaryvilla, cahlornia 94608-1827 • (510) 652-4500 • fax (510) 652.2246 <br /> Offices Worldwide <br /> Sl0/ZOOM 'V'S'il KOUA D 01C9 M M0 cr:90 96ILZ/SO <br />