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Geological reChics 1A W" <br /> 1107 7*St <br /> Modesto,California 95354 <br /> (209)522-41191Fax#522-4227 <br /> June 17, 2002 <br /> c© <br /> GTI Project No.: 750.3 <br /> GTI Project Name: City of Escalon " <br /> n l y <br /> Mr. Doug Stidham Q <br /> City of Escalon <br /> P.O. Box 248 <br /> Escalon, California 95320 <br /> RE: Vapor Extraction System Update <br /> City of Escalon(Former Arco Mini Mart), 1305 Escalon,Ave.,Escalon,CA <br /> Dear Stidham: <br /> This letter is to update you on the operation of the vapor extraction system at the Former Arco <br /> Mini Mart, 1305 Escalon Ave. in Escalon CA. As I explained in my May 30, 2002 letter, the <br /> internal combustion engine (IC) was removed from the site on May 29, 2002 due to engine <br /> failure. The IC was dismantled the following week and it was determined that an exhaust valve <br /> broke and fell into the cylinder. The broken valve piece then caused the piston to jam,breaking <br /> it. <br /> The IC was rebuilt and returned to the site on June 14, 2002. Field sampling, conducted on the <br /> 14d' and again on the 17d', indicate that the IC is operating properly. Laboratory samples will be <br /> collected this week. <br /> If you have any questions regarding this project, please call Ray Kablanow or myself at the <br /> office(209) 522-4119. <br /> Respectfully ubmitted, <br /> r <br /> e <br /> CTE0UW#IG4L TFGiINICS INC <br /> Michael J.Niemi <br /> Project Geologist <br /> Cc: Lori Duncan—SJC PHS/EHD <br /> Heather Kuklo-SJVUAPCD <br /> Gordon Boggs—RWQCB-CVR <br />