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SECOR www secor com <br /> INTERNATIONAL 3017 Kilgore Road Suite 100 <br /> E C ® R INCORPORATED Rancho Cordova CA 95670 <br /> 916 861 0400 TEL <br /> 916 861 0430 FAX <br /> January 29, 2004 <br /> Harlin Knoll <br /> San Joaquin County Environmental Health Department <br /> 304 East Weber Avenue, Third Floor <br /> Stockton, California 95202 <br /> RE Fourth Quarter 2003 Groundwater Monitoring Report <br /> Former Chevron Station 9-8632 <br /> 575 Grant Line Road <br /> Tracy, California <br /> SECOR Project No 77CH 00000 09 0021 <br /> Dear Mr Knoll <br /> SECOR International Incorporated (SECOR) is providing this report to summarize the fourth quarter <br /> groundwater monitoring event at the above referenced site <br /> COMPLETED ACTIVITIES - FOURTH QUARTER 2003 <br /> ■ Conducted quarterly groundwater monitoring and sampling <br /> • ■ Prepared and submitted quarterly groundwater monitoring report <br /> PLANNED ACTIVITIES - FIRST QUARTER 2004 <br /> ■ Conduct quarterly groundwater monitoring and sampling � <br /> ■ Prepare and submit quarterly groundwater monitoring report <br /> DISCUSSION <br /> ak� <br /> On October 29, 2003, Gettler-Ryan Incorporated (G-R) performed the fourth quarter groundwater <br /> monitoring and sampling event for 2003 G-R's Groundwater monitoring report is included as <br /> Attachment 1 Depth to groundwater across the site ranged from 5 87 to 7 80 feet below ground <br /> surface (bgs) Groundwater elevation across the site increased an average of 0 14 feet from the <br /> previous sampling event The groundwater flow direction was reported to the northwest at an <br /> approximate gradient of 0 005 to 0 006 feet per foot (ft/ft) Eight wells were sampled during this <br /> event A summary of laboratory data is listed below <br /> E� <br /> 1 IChevron1986321Penodjc Monttonng12003WQ2003 OMR 98632 doc SECOR International incorporated <br /> 1 <br /> a <br /> r <br />