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edo l,Cat <br /> G � <br /> 1107 71°St. <br /> Modesto,Cali€omia 95354 <br /> (209)522-4119/Fax#522-4227 <br /> May 30, 2002 <br /> GTI Project No.. 750.3 <br /> GTI Project Name: City of Escalon <br /> Mr. Doug StidhamNP M SRv�� S <br /> City of Escalon <br /> P.O. Box 248 <br /> Escalon, California 95320 <br /> RE: Vapor Extraction System <br /> City of Escalon(Former Arco Mini Mart), 1305 Escalon,Ave.,Escalon,CA <br /> - -T - - -Dear Stidham: - - -- -As you are aware from the monthly vapor extraction monitoring reports that have been <br /> submitted to the SJ-VUAPCD,the vapor extraction system has been inoperable much of the time <br /> since the February 5, 2002 startup. After startup, the internal combustion engine (IC) used to <br /> control emissions ran until February 27, 2002 when it was shutdown and removed from the site <br /> because it was not properly controlling emissions. The IC was completely rebuilt and returned <br /> to the site on April 22,2002 and restarted. The vapor extraction system operated until late May <br /> when it shutdown due to failure of the IC. After a preliminary inspection, it appears that either <br /> the head on the IC has cracked or the head gasket has blown. In either case, the IC is out of <br /> commission for some period of time. <br /> The IC was removed from the site on May 29' and taken back to the company that performed <br /> the rebuild for repair. The contractor responsible for the installing and operating the IC at the <br /> site, Don Light of Del Tech, has been given a two-week deadline to have the vapor extraction <br /> system operational. If the contractor has not installed either the original IC or a replacement by <br /> June 13, 2002, GTI will obtain a rental IC and install it at the site. There are other emission <br /> control options available, however, if a change is made it will involve having to modify the <br /> permit with the SJVUAPCD. At this time staying with an IC control device is the <br /> recommended option. <br /> GTI will continue to push this project forward and will keep you updated as status of the IC <br /> -pages.�lf_�ou have-any-questio-ns regarding this-project, please-call Ray.Kablanow orf- <br /> - <br /> at the office(209) 5224119. <br /> Respectfully Submitted, <br /> ,r OLAClG(L !CS INC <br /> Michael J. Niemi <br /> Project Geologist <br /> Cc: Lori Duncan—SJC PHS/EHD <br /> Heather Kukla-SJVUAPCD <br /> Gordon Boggs—RWQCB-CVR <br />