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SECOR vv Alw secor com <br /> INTERNATIONAL 3017 Kilgore Road Suite 100 <br /> SE C Rancho Cordova CA 95670 <br /> 916 861-0400 Tei <br /> ; )E1' ICE 916 861-0430FA1( <br /> 03 JUL 30 PM 12: 03 10% <br /> July 31, 2003 <br /> Ms Victoria McCartney -4 <br /> San Joaquin County Environmental Health Department <br /> 1 ✓r <br /> 304 East Weber Avenue, Third Floor <br /> Stockton, California 95202 <br /> RE Second Quarter 2003 Groundwater Monitoring Report <br /> Chevron Service Station 9-1452 P C� <br /> 334 East Main Street a <br /> Ripon, California t v Ji <br /> SECOR Protect No 77CH 00000 09 0004 <br /> Dear Ms McCartney <br /> SECOR International Incorporated (SECOR) is providing this report to summarize the second � 1 <br /> quarter 2003 (202003) groundwater monitoring event at the above referenced site 4, <br /> COMPLETED ACTIVITIES—SECOND QUARTER 2003 <br /> ■ Conducted quarterly groundwater monitoring and sampling, <br /> �1 Prepared and submitted quarterly groundwater monitoring report and, <br /> J ■ Submitted aquifer test report and work plan for Interim measures <br /> PLANNED ACTIVITIES —THIRD QUARTER 2003 <br /> ■ Conduct quarterly groundwater monitoring and sampling <br /> ■ Prepare and submit quarterly groundwater monitoring report <br /> DISCUSSION <br /> On May 1, 2003, Gettler-Ryan incorporated (G-R) performed 2Q2003 groundwater monitoring and <br /> sampling G-R's groundwater monitoring report is included as Attachment A Depth to groundwater <br /> across the site ranged from 28 68 to 31 92 feet below ground surface (ft bgs) Groundwater <br /> elevation across the site Increased an average of 0 08 feet from the previous sampling event The <br /> groundwater flow direction varied at an approximate gradient of 0 003 to 0 03 feet per foot (ft/ft) A <br /> summary of laboratory data is listed below <br /> r <br /> i' <br /> I 1Chevron191452iPenodic Monitonng120034202003 OMR 91452 doc SECOR International Incorporated <br />