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:e <br /> M <br /> CE ? <br /> CONDOR EARTH TECHNOLOGIES INC. <br /> June 11 , 2001 1125 N. Golden State Blvd, 188 Frank West Circle <br /> Suite G Suite I <br /> Turlock, CA 95381 Stockton, CA 95206 <br /> (209) 668-9234 (209) 234-0518 <br /> FAX (209) 668-9248 FAX (209) 234-0538 <br /> Ms. Linda Sanborn <br /> CA State Water Resources Control Board <br /> Division of Clean Water Programs <br /> Underground Storage Tank Cleanup Fund <br /> 1001 'T' Street <br /> Sacramento, CA 95814 <br /> Subject: Cost Pre-approval, Canepa's Car Wash, 6230 Pacific Ave., Stockton, CA <br /> California Underground Storage Tank Clean-Up Fund (CUSTCN) Claim No. 008449 <br /> Dear Ms. Sanborn: <br /> Attached please find the cost pre-avvroyal. request form for quarterly monitoring and soil vapor <br /> extraction system (SVE) evaluation and reconfiguration at the above referenced site. , The purpose of the <br /> proposed work is to continue quarterly monitoring for another year, and to evaluate and reconfigure the <br /> SVE to improve efficiency and lower operating costs. <br /> Condor is continuing quarterly groundwater monitoring under the oversight of the San Joaquin County <br /> Public Health Services, Environmental Health Division (PHS/EIM). This pre-approval request provides <br /> Condor' s ongoing costs to provide continued monitoring for another four quarters. <br /> After nearly two years of successful operation, monitoring of the SVE system indicated that destruction <br /> efficiencies had dropped below the required4 San Joaquin Valley Air Pollution Control District <br /> (SJVAPCD) permit requirements. Based on the reduced volatile organic concentrations and reduced <br /> efficiencies, Condor is proposing a system evaluation and possible reconfiguration. In particular, Condor <br /> will evaluate different operating scenarios, such a pulsed operation, that may result in significant energy <br /> cost savings. This pre-approval request includes estimated costs for one year of S VE operation. <br /> Included with this request is a letter from the PHS/EHD directing restarting of the SVE. Please note that <br /> the letter from PHS/EHD also directs further investigation, for which we will be requesting pre-approval <br /> in subsequent correspondence. <br /> This pre-approval request includes the following items as attachments: <br /> 1 . Pre-Approval Request Form, <br /> 2, The PHS/EHD letter dated May 4, 2001 directing the site work, <br /> 3 . A Condor letter of May 14 asking for time extensions, <br /> 4. The PHS/F.HD letter dated May 18 granting the time extensions, and <br /> 5 . Detailed scope of work and cost estimate. <br /> ENVIRONMENTAL GEOLOGICAL ENGINEERING GEOTECHNICAL <br /> htip.,//Www,condarearth.com <br />