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�t�►,, f <br /> ��I�J/// SECOR www secor com <br /> INTERNATIONAL 3017 Kilgore Road Suite 100 <br /> SE (C ® INCORPORATED 91"61-0400Rancho TEL ECA 95670 <br /> 91661-0430 F- <br /> R <br /> ax <br /> RECEWED <br /> April 13, 2004 <br /> APR 14 2004 <br /> ViRONNIENT <br /> Mike Infurna ESP MIT/SERVICES HEALTH <br /> San Joaquin County <br /> Environmental Health Division <br /> 304 East Weber Avenue, Third Floor <br /> Stockton, California 95202 <br /> RE Chevron Groundwater Monitoring Report(1Q2004) <br /> Chevron Station 9-1848 <br /> 1257 West Yosemite Avenue <br /> Manteca, California <br /> SECOR Protect No 77CH 00000 23 0008 <br /> Dear Mr Infurna <br /> SECOR International Incorporated (SECOR), on behalf of Chevron Environmental Management <br /> Company, is providing this report to summarize the recently completed groundwater monitoring <br /> event at the above referenced site The site is an active service station located at 1257 West <br /> Yosemite Avenue, Manteca, California <br /> • COMPLETED ACTIVITIES - FIRST QUARTER 2004 <br /> ■ Conducted quarterly groundwater monitoring and sampling <br /> ■ Prepared and submitted quarterly groundwater monitoring report <br /> PLANNED ACTIVITIES—SECOND QUARTER 2004 <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) on January 21, <br /> 2004 G-R's groundwater monitoring report is included as Attachment A Depth to groundwater <br /> across the site was approximately 17 feet below ground surface Groundwater elevation across the <br /> site increased an average of 3 27 feet from the previous sampling event Groundwater flow was to <br /> the north at an approximate gradient of 0 001 ft/ft A summary of laboratory results are listed below <br /> i <br /> 1 1Chevron1918481Penodsc Mon itoring1200411Q2004 91848 doc SECOR International Incorporated <br />