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GROUNDWATER <br /> TECHNOLOGY, INC. 1101Halyard Drive,Suite 140.West Sacramento.CA9569J (916)3721!700 <br /> FAX(916)372-8781 <br /> August 20, 1992 Project No. 02320 2107 <br /> Mr. Clint B. Rogers <br /> Chevron U.S.A. Products Company <br /> 2410 Camino Ramon <br /> San Ramon, CA 94583-0804 <br /> RE: WORK PLAN FOR SOIL AND GROUNDWATER ASSESSMENT <br /> CHEVRON SERVICE STATION #9-0557 <br /> 139 SOUTH CENTER j <br /> STOCKTON, CALIFORNIA <br /> Dear Mr. Rogers: <br /> In response to your request, Groundwater Technology, Inc. has prepared this additional soil and <br /> groundwater assessment work pian for the above-referenced site to fulfill the requirements of the <br /> San Joaquin County Public Health Services (SJCPHS). The scope of work consists of drilling one <br /> soil boring, installation of a groundwater monitoring well, soil and groundwater sampling, laboratory <br /> analyses, and report preparation. <br /> TASK 1: SITE-SPECIFIC HEALTH AND SAFETY PLAN 1 BACKGROUND REVIEW 1 PERMITTING <br /> A Site-Specific Health and Safety Plan will be prepared by Groundwater Technology as required by <br /> the Occupational Health and Safety Administration (OSHA) Standard "Hazardous Waste Operations <br /> and Emergency Response" guidelines (29 CFR 1910.120). The Site-Specific Health and Safety <br /> Plan will be prepared by Groundwater Technology personnel, following a complete review of site <br /> conditions and any existing Site-Specific Health and Safety Plans for the site with the project <br /> manager. The document will be reviewed and signed by all Groundwater Technology personnel <br /> and subcontractors performing work at the site. <br /> Groundwater Technology will conduct a technical review of all pertinent information associated <br /> with the site. All applicable local and State permits pertaining to the proposed work will be <br /> obtained. <br /> TASK 2: SOIL BORING 1 SAMPLING AND ANALYSES 1 MONITORING WELL INSTALLATION <br /> Groundwater Technology will drill one (1) soil boring using a truck-mounted drill rig equipped with <br /> 8-inch-diameter hollow-stem augers (Figure 1). The boring will be drilled to a depth of <br /> approximately 65 feet below grade to accommodate monitoring well installation. The water table <br /> is expected to be encountered at a depth of approximately 45 feet. The hollow-stem augers will be <br /> steam cleaned before drilling the boring, and all sampling equipment will be properly cleaned before <br /> and between sample intervals. The drilling will be conducted over a one day period. Soil samples <br /> Offices througk,)ut the U.S..Canada and Overseas <br />