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SECOR www secor conn <br /> INTERNATIONAL 3017 Kilgore Road Suite 100 <br /> ECOR INCORPORATED Rancho Cordova CA 95670 <br /> 916 861-0400 TEL <br /> 916 661-0430 FAX <br /> April 29, 2003 <br /> Harlin Knoll <br /> San Joaquin County Environmental Health Department <br /> 304 East Weber Avenue, Third Floor MAY o 2 2003 <br /> Stockton, California 95202 <br /> Elv v, _ - ,� ilEALTF! <br /> RE Chevron Groundwater Monitoring Report (102003) PERMIT/SERVICES <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 /> k <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 575 <br /> Grant Line Road, in Tracy, California <br /> COMPLETED ACTIVITIES - FIRST QUARTER 2003 <br /> ■ Conducted quarterly groundwater monitoring and sampling <br /> • Prepared and submitted quarterly groundwater monitoring report <br /> ■ Conducted a study of groundwater influence due to pumping of new City of Tracy water <br /> supply well `'r <br /> PLANNED ACTIVITIES - SECOND QUARTER 2003 <br /> 1r h <br /> ■ Conduct quarterly groundwater monitoring and sampling <br /> ■ Prepare and submit quarterly groundwater monitoring report <br /> ■ Prepare report of pumping influence study s� <br /> 14k <br /> y a,' <br /> DISCUSSION <br /> X 4� <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 30, 2003 G-R's fA„5r <br /> groundwater monitoring report is included as Attachment A Depth to groundwater across the site <br /> ranged from 5 58 to 8 36 feet below ground surface Groundwater elevation across the site <br /> decreased an average of 0 22 foot from the previous sampling event Groundwater flow was to the y <br /> north at an approximate gradient of 0 008 ft/ft A summary of laboratory results are listed below <br /> 1 4Chevront98632IPenodic Monitonng120034102003 0MR 98632 doc SECOR Intemational incorporated <br />