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i <br /> I&A SECOR www secor com <br /> INTERNATIONAL <br /> S E C ® R INCORPORATED <br /> 3017 Kilgore Road,Style 100 <br /> Rancho Cordova,CA 95670 <br /> 916 861-0400 TEL <br /> 916 861 0430 FAx <br /> RECOWD <br /> April 24, 2003 I <br /> MAY 0 2 203 <br /> r <br /> Harlin KnollEfVVIRt��IMENT HEALTH <br /> San Joaquin County Environmental Health Department pERMIT/SEMACES <br /> 304 East Weber Avenue, Third Floor <br /> Stockton, California 95202 <br /> RE Chevron Groundwater Monitoring Report (102003) <br /> Chevron Station 9-3232 <br /> 8660 Lower Sacramento Road <br /> Stockton, California <br /> SECOR Project No 77CH 00000 09 0014 <br /> Dear Mr Knoll <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 located at 8660 <br /> Lower Sacramento Road, in Stockton, California <br /> COMPLETED ACTIVITIES- FIRST QUARTER 2003 <br /> • 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 23, 2003 G-R's <br /> groundwater monitoring report is included as Attachment A Depth to groundwater across the site <br /> ranged from 3654 to 4473 feet below ground surface Groundwater elevation across the sites <br /> Increased an average of 4 51 feet from the previous sampling event Groundwater flow was to the s <br /> south at an approximate gradient of 0 001 to 0 003 ft/ff A summary of laboratory results are listed =' <br /> below <br /> 1�3 <br /> • j I <br /> R +�y <br /> dyy�LL !I <br /> y R <br /> 1 <br /> I Chev=1932321Penodic Monrtonng120031102003 OMR 93232 doc SECOR International Incorporated <br /> a` <br /> 1 1 f 1 <br /> Y � <br />