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L;j Le ine•Fricke•Recon ENGINEERS.HYDRO GEOLOGISTS B APPLIED SCIEM STS March 7, 1997 LINCOLN car� 3966.07-002 7„` r7SU�PERINTENDENT:_Bviafax and U.S. mail oxeMs. Sarah Hart MAR 101997 Associate Superintendent Lincoln Unified School District Csa ASSOCIATE 2010 West Swain Road nxC Stockton, California 95207-4055 WP A= Subject: Request for Access to Drill One "Pilot" Soil Boring and Install Two Monitoring Wells in the Lincoln Elementary School Faculty Parking Lot, Stockton, California Dear Ms. Hart: Defendants SDCDs Levine-Fricke-Recon Inc. (LFR) is On behalf of the Settling D Cleaning ( ), ( g ry confirming that the Lincoln Unified School District has granted access, during the period of March 29 through April 6, 1997, to drill and sample one "pilot' soil boring and two groundwater monitoring wells at Lincoln Elementary School, located at 818 West Lincoln Road, Stockton, California. As you discussed with my colleagues, Sarah Raker, on Thursday, February 27, 1997, and Adam Klein, in December 1996, the SDCDs are investigating certain hazardous substance contamination in groundwater and soils that is associated with historical dry cleaning operations at the nearby Lincoln Center. This work is being performed pursuant to several orders of the United States District Court, Eastern District of California, in the case Lincoln Prop r i Ltd., v. Norman Higgins.-et al., Case No. CV-S-91-760-DFL-GGH. The work is being performed under the oversight of Lincoln Properties, Ltd., the owner and manager of portions of Lincoln Center, as well as the California Regional Water Quality Control Board, Central Valley Region and the San Joaquin County Public Health Services Environmental Health Division (SIC PHS/EHD). The enclosed "Lincoln Center Fact Sheets" describe the background and pending investigation at the Lincoln Center site. The environmental investigation is being conducted as described in the "Work Plan for Environmental Investigation," dated September 23, 1996 ("the RI/FS Work Plan"), which is available for review at the Margaret Troke Branch of the Stockton Public Library,.located at 502 Benjamin Holt Drive, Stockton, California. As part of the environmental investigation at the Lincoln Center site, the SDCDs will be monitoring and sampling groundwater at several proposed off-site locations. These off-site locations are required to evaluate the lateral extent of any contamination that may be present in the groundwater as described in the RI/FS Work Plan. The cone penetrometer testing and push-in polyvinyl chloride borings previously installed in the parking lot in December 1996 allowed us to approximately locate the lateral extent of hazardous substances in the area of Lincoln Elementary School. To follow-up on these results, the SDCDs will need to install one pilot soil boring and two groundwater monitoring wells on a portion of the faculty parking lot at Lincoln Elementary School (see enclosed figure). The pilot soil boring will be used to identify the type of soil encountered and 1900 Powell Street, 12th Floor, Emeryville, California 94608-1827 • (510) 652-4500 • fax(510) 652-2246 • Offices Worldwide