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C E <br /> CONDOR EARTH TECHNOLOGIES INC. <br /> February 6, 2001 1125 N . Golden State Blvd , 188 Frank West Circle <br /> Suite G Suite I <br /> Turlock, CA 95381 Stockton , CA 95206 <br /> (209) 668-9256 (209) 234-0518 <br /> Mr. Remo Canepa FAX (209) 668-9257 FAX (209) 234-0538 <br /> 1536 N . Hunter Street <br /> Stockton, CA 95204 <br /> RE: Soil Vapor Extraction (SVE) System Shutdown, Canepa 's Carwash, 6230 Pacific <br /> Avenue, Stockton, California <br /> Dear Mr. Canepa, <br /> This letter intended to inform you of the status of our work regarding the above referenced SVE. <br /> The SVE system was removed from service on February 6, 2001 to meet the conditions of the <br /> Permit to Operate issued from the San Joaquin Valley Air Resources Board. While on site to turn <br /> the system oft, I informed your son, David, of the shutdown . He said that lie would, in turn, <br /> inform Jeff The permit requires that the system be shutdown if destructive efficiency of the SVE <br /> drops below 95 % . Field measurements on January 24, 2001 indicated that the SVE was operating <br /> at 68% efficiency. Despite attempts to time the system for improved performance, additional site <br /> visits during the next two weeks indicated that the SVE was operating at 80% efficiency. The <br /> system , therefore, has been removed from service while we reevaluate its operation and <br /> efficiency. <br /> We are currently awaiting response from the San Joaquin County Public Health Services/ <br /> Environmental Health Department (SJC PHS/EHD) resulting from our January 17,2000 meeting <br /> with them . Disposition of the site investigation, monitoring, and SVE system is dependent on <br /> their response. Quarterly monitoring is anticipated to continue as scheduled . l will be preparing <br /> the current Reimbursement Request in the near future. In addition, I will be preparing a Contract <br /> Addendum for reimbursement request preparation; continued quarterly monitoring; and SVE <br /> evaluation , continued operations and maintenance, and potential reconfiguration. Our office will <br /> forward the Contract Addendum to you for your signature next week. If you have any questions <br /> please call David Wood, Den 1Cresse, or myself at ycrcenvenience. <br /> Sincerely, <br /> CONDOR EARTH TECHNOLOGIES, INC. <br /> iI eo 4::, <br /> Bill A. Cook Ill <br /> Staff Geologist <br /> cc: Jeffrey C. F. Wong, SJC PHS/EHD <br /> P:\1707 Canepa-Pacific\correspondence\canepa 2-6-01 <br /> ENVIRONMENTAL IN GEOLOGICAL ENGINEERING GEOTECHNICAL <br /> ?� hfp://www,condorearth.com <br />