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TON <br /> ®�®rA2=1E1VCE <br /> TN6 RBBULT'L3 TEAM <br /> R E�r. *a <br /> November 27, 1997 JAN 0 S 1992ENVIRONMENTAL. HEALTH <br /> PERMIT/SERVICES <br /> Mr. Clint Rogers <br /> Chevron U.S.A. , Inc. <br /> Post Office Box 5004 310-355 <br /> San Ramon, California 94583--0804 <br /> Subject: Annual Ground Water Monitoring Report <br /> Former Chevron Station No. 9-7780 <br /> 3246 East Fremont Street <br /> Stockton, California <br /> Dear Mr. Rogers: <br /> In accordance with our agreement, Alton Geoscience transmits <br /> this Annual Ground Water Monitoring and Sampling Rep <br /> for <br /> former Chevron Station No. 9-7780, located at 3246 East <br /> Fremont Street, Stockton, California. Figure 1 shows the site <br /> location. <br /> Monitoring and sampling of the ground water monitoring wells <br /> was performed on October 18, 1991, in accordance with the <br /> requirements and procedures of the California Regional Water <br /> Quality Control Board (RWQCB) and local regulatory agencies. <br /> FIBB.D pROCLD <br /> URES <br /> Prior to purging and sampling the wells, each well was checked <br /> for liquid-phase hydrocarbons or sheen. The depth to ground <br /> watar and, if present, free product was measured in each well <br /> from the top of casing using an electronic interface probe <br /> with 0.01 foot tolerance. <br /> Ground water samples ware collected after more than 3casing <br /> volumes of ground water was purged from each well. <br /> sample was collected using a clean bailer. Ground water <br /> samples were .;hen decanted into the appropriate clean sample <br /> containers for delivery to a California-certified laboratory <br /> following proper preservation and chain of custody procedures. <br /> Purged ground water was stored onsite in DOT-approved, <br /> 55-gallon drums pending removal by Erickson Inc. , a licensed <br /> hauler. The purged ground water was transported as <br /> non-hazardous to Gibson Oil/ Pilot Petroleum of Redwood City, <br /> California for recycling. <br /> Iwo Barnett Averm Sune 140 <br /> C 15)68-1582 nia FAX <br /> 1,415 <br /> (4151882.1582•FAX!4151 682-8921 <br />