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4 <br /> GOSECOR www secor corn <br /> INTERNATIONAL 3017 Kiigore Road Suite 100 <br /> S ECOR INCORPORATED Rancho Cordova CA 95670 <br /> 916-861-0400 TEL <br /> 916-861-0430 FAX r <br /> n <br /> April 13, 2004 <br /> ,r <br /> Mike In#urna <br /> San Joaquin County APR 14 2004 <br /> Environmental Health Division <br /> 304 East Weber Avenue, Third Floor <br /> NVIRCNJII� {�7 HEALTHStockton, California 95202 PERMIT/SERVICES <br /> RE Chevron Groundwater Monitoring Report (1Q2004) <br /> Chevron Station 9-6171 <br /> 6633 Pacific Avenue <br /> Stockton, California <br /> SECOR Project No 77CH 00000 23 0022 <br /> Dear Mr Infurna <br /> SECOR International Incorporated is providing this report to summarize the recently completed <br /> groundwater monitoring event at the above referenced site The site is a Chevron service station <br /> located at 6633 Pacific Avenue, Stockton, California <br /> COMPLETED ACTIVITIES - FIRST QUARTER 2004 <br /> ■ Conducted quarterly groundwater monitoring and sampling <br /> Prepared and submitted quarterly groundwater monitoring report <br /> PLANNED ACTIVITIES — SECOND QUARTER 2004 <br /> ■ Conduct quarterly groundwater monitoring and sampling <br /> ■ Prepare and submit quarterly groundwater monitoring report <br /> DISCUSSION <br /> The quarterly monitoring and sampling was performed by Gettler-Ryan, Inc (G-R), on January 12 & <br /> 13, 2004 G-R's groundwater monitoring report is included as Attachment A Depth to groundwater <br /> across the site was approximately 41 feet below ground surface Groundwater elevation across the <br /> site decreased an average of 1 45 feet from the previous sampling event Groundwater flow varies <br /> at a gradient of 0 009 to 0 09 ft/ft A summary of laboratory results are listed below <br /> 11Chevron1969791Penodic Monitonn9 120041102004 QMR 96179 doc SECOR International incorporated <br /> �a <br />