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ll <br /> SECOR www secor corn(� i INTERNATIONAL 3017 Kilgore Road Suite 10o <br /> S E C ® R INCORPORATED Rancho Cordova CA 95670 <br /> 916-861-0400 TEL <br /> 916$61-0430 FAX <br /> January 29, 2004 <br /> Harlin Knoll #1 ' <br /> San Joaquin County Environmental Health Department li <br /> 304 East Weber Avenue, Third Floor ", <br /> Stockton, California 95202 <br /> RE Fourth Quarter 2003 Groundwater Monitoring Report <br /> Chevron Station 9-3232 <br /> 8660 Lower Sacramento Road <br /> Stockton, California , <br /> SECOR Project No 77CH 00000 09 0014 <br /> � Y <br /> Dear Mr Knoll <br /> SECOR International Incorporated 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 Elfy <br /> 4 <br /> • Conduct quarterly groundwater monitoring and sampling <br /> ■ Prepare and submit quarterly groundwater monitoring report <br /> ■ Prepare and submit a work plan for additional site assessment <br /> DISCUSSION <br /> On October 31, 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 42 22 to 45 78 feet below ground : <br /> surface (bgs) Groundwater elevation across the site decreased an average of 1 80 feet from the <br /> previous sampling event The groundwater direction was reported at an approximate gradient of <br /> 0 01 to 0 02 feet per foot (ft/ft) Ten wells were sampled during this event A summary of laboratory <br /> data is listed below <br /> , <br /> J�e <br /> i <br /> Md � <br /> • {�II <br /> *f <br /> 11Chevron1932321Penodlc Monrfonng42003t4O20D3 QMR 93232 doc SECOR Intematronal Incorporated <br /> r <br /> I{t^, <br /> �1� <br />