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®R <br /> SECOR www secor corn <br /> ® INTERNATIONAL a <br /> Igoire N4UnFnAl HECordova,Road,CA 95670 <br /> 11"-P�11T CPVJCE916861-04W TEL <br /> 916-861 MO FAx <br /> 03 APR 23 AM 9: 31 <br /> April 22, 2003 <br /> Mike Infurna <br /> San Joaquin County <br /> Environmental Health Division <br /> 304 East Weber Avenue, Third Floor <br /> Stockton, CA 95202 <br /> RE Chevron Groundwater Monitoring Report (1Q2003) <br /> Chevron Station 9-6171 <br /> 6633 Pacific Avenue <br /> Stockton, California <br /> SECOR Project No 77CH 00000 09 0017 <br /> Dear Mr Infurna <br /> SECOR International Incorporated is providing this report to summarize the recently <br /> completed groundwater-monitoring event at the above referenced site The site is a Chevron service <br /> station located at 6633 Pacific Avenue, Stockton, California <br /> COMPLETED ACTIVITIES - FIRST QUARTER 2003 <br /> e Conducted quarterly groundwater monitoring and sampling <br /> ■ Prepared and submitted quarterly groundwater monitoring report <br /> PLANNED ACTIVITIES - SECOND QUARTER 2003 <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) This <br /> groundwater monitoring and sampling event was performed on January 15, 2003 G-R's <br /> groundwater monitoring report is included as Attachment A Depth to groundwater across the site <br /> was approximately 39 feet below ground surface Groundwater elevation across the site increase an <br /> average of 0 24 feet from the previous sampling event Groundwater flow varied to the southeast at <br /> an approximate gradient of 0 01 ft/ft A summary of laboratory results are listed below <br /> i <br /> 1 1Chevron1961771Penodic Mondonng420031702003 OMR doc SECOR International Incorporated <br />