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SECOR www secor com <br /> INTERNATIONAL 3017 Kilgore Toad Suite 100 <br /> SE C ® R INCORPORATED Rancho Cordova CA 95670 <br /> 916 861 0400 TEL <br /> 916-8610430 cnx <br /> April 30, 2004 IECE# f <br /> L�1� <br /> Harlin Knoll APR 2 9 2004 <br /> San Joaquin County Environmental Health Department EWRONWNT HEALTN <br /> 304 East Weber Avenue, Third Floor PERM1TISERVICES <br /> Stockton, California 95202 <br /> RE First Quarter 2004 Groundwater Monitoring Report <br /> Former Chevron Station 9-8632 <br /> 575 Grant Line Road <br /> Tracy, California <br /> SECOR Project No 77CH 00000 23 0027 <br /> Dear Mr Knoll <br /> SECOR International Incorporated (SECOR) is providing this report to summarize the first quarter <br /> groundwater monitoring event at the above referenced site <br /> COMPLETED ACTIVITIES - FIRST QUARTER 2004 <br /> I <br /> ■ Conducted quarterly groundwater monitoring and sampling <br /> ■ Prepared and submitted quarterly groundwater monitoring report <br /> PLANNED ACTIVITIES - SECOND QUARTER 2004 r <br /> ■ Conduct quarterly groundwater monitoring and sampling <br /> ■ Prepare and submit quarterly groundwater monitoring report <br /> DISCUSSION <br /> f� <br /> On January 26, 2004, Gettler-Ryan Incorporated (G-R) performed the first quarter groundwater <br /> monitoring and sampling event for 2004 G-R's Groundwater monitoring report is included as <br /> Attachment 1 Depth to groundwater across the site ranged from 5 44 to 7 35 feet below ground <br /> surface (bgs) Groundwater elevation across the site increased an average of 0 47 feet from the <br /> previous sampling event The groundwater flow direction was reported to the northwest at an <br /> approximate gradient of 0 007 feet per foot (ft/ft) Eight wells were sampled during this event A ` <br /> summary of laboratory data Is listed below +,, <br /> Lf <br /> f� <br /> J <br /> 1 1Chevron1986321Penodc Monrtonng1200411Q2004 QMR 98632 doc SECOR lntemational Incorporated <br /> A <br />