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�fSECOR www secorcom <br /> INTERNATIONAL <br /> S E C ® R INCORPORATED 3017 Kilgore Road Suite 100 <br /> Rancho Cordova, 85670 <br /> 9]6-861-0400 TEL <br /> 916 661-0430 Fax <br /> April 24, 2003 <br /> Harlin Knoll �� <br /> San Joaquin County Environmental Health Department r� �1 2403 <br /> 304 East Weber Avenue, Third Floor Mp`{ <br /> Stockton, California 95202 <br /> RE Chevron Groundwater Monitoring Report (tQ2003) �PpR�ICES <br /> Chevron Station 9-8264 <br /> 3775 Tracy Boulevard <br /> Tracy, California <br /> SECOR Project No 77CH 00000 09 0020 <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 3775 <br /> Tracy Boulevard 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 /> 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 27, 2003 G-R's <br /> groundwater monitoring report is included as Attachment A Depth to groundwater across the site <br /> ranged from 8 86 to 10 37 feet below ground surface Groundwater elevation across the site <br /> increased an average of 0 48 foot from the previous sampling event Groundwater flow was to the <br /> northeast at an approximate gradient of 0 002 ft(ft A summary of laboratory results are listed below <br /> • <br /> 1 4Chevron1982641Penodic Monitonng120031102003 QMR 98264 doc SECOR lntemational Incorporated <br />