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Geological Tech Inc. <br /> 1107 re st. <br /> Modesto,California 95354 <br /> (209)522-4119/Fax#522-4227 n E C L E E) <br /> January 29,2003 ,JAN 3 0 2003 <br /> GTI Project No.: 750.3 ENVIRONMENT HEALTH <br /> GTI Project Name:City of Escalon PERMIT/SERVICES <br /> Mr.Doug Stidham <br /> City of Escalon <br /> P.O.Box 248 <br /> Escalon,California 95320 <br /> RE: Vapor Extraction System Shutdown <br /> City of Escalon(Former Arco Mini Mart), 1305 Escalon,Ave.,Escalon,CA <br /> Dear Mr. Stidham: <br /> The vapor extraction system at your site has operated for a cumulative runtime of slightly over 225 days. <br /> In this time it has removed approximately 675 gallons of gasoline from the subsurface. The groundwater <br /> at the site only shows trace concentrations of xylene in one well. A report of the vapor extraction work <br /> was submitted on January 21,2003. GTI recommended closure of the site. <br /> The permit to operate the vapor extraction system expires on.January 31, 2003. At this time it is not <br /> known if the County will require further operation of the extraction system at the site. Rather then renew <br /> the permit to operate and then close the site,GTI will have Del Tech Geotechnical shut off the VETS and <br /> disconnect the vapor extraction hoses. This way it will be possible for the SJVUAPCD to verify at <br /> anytime that the VETS is not in operation. The IC will be left on site until the County informs us to <br /> either continue operation or to close the site. If the County orders continued operation,GTI will submit a <br /> CPA for additional operation and will reapply for the SJVUAPCD permit. <br /> If you have any questions regarding this project,please call Ray Kablanow or myself at the office (209) <br /> 522-4119. <br /> Re ectfully Sub tted, <br /> 4MLOOIGtL TECHNICS MC <br /> Michael J.Niemi <br /> Project Geologist <br /> Cc: Lori Duncan-SJC PHS/EHD <br /> Lisa Middleton-SJVUAPCD <br /> Don Light-Del Tech <br /> Gordon Boggs-RWQCB-CVR <br />