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PREclsIoN <br /> Analytical Laboratory CERTIFICATE OFANALYSIS <br /> Tuesday,March 13, 2007 <br /> Attention: G uy W.Roy <br /> R&L Diesel Report Page 7 of 23 <br /> P.O.Box 2498 <br /> I Danville, CA 94526 <br /> l Total Petroleum Hydrocarbons-Diesel Range <br /> Sample Inform z lion <br /> Sample ID: Over Tank Sample Type: Grab <br /> Laboratory ID: 7022608-01 Project Name: UST-Waste Oil <br /> Date/Time Sampled: 26-Feb-07 00:00 by Guy W.Roy Sample Matrix: Soil <br /> Test Parameter Result DLR Unit Dilution BatchPre aced Analysis Date Method Notes <br /> TPH-Diesel ND 1.00 mg/kg 1 AC70901 09-Mar-07 09-Mar-07 EPA 8015M <br /> mg/L=milligrams per Liter—ppm DLR=Detection Limit for Purpose of Reporting. <br /> u9i1,—micrograms per Liter=ppb Exceptional sample matrices or interferences may <br /> result in higher detection limits. <br /> RESPECTFULLY SUBMITTED, <br /> Jonathan Le,Laboratory Director <br /> 3935 N. Coronado Ave Stockton CA. 95204 phone: (209) 477-8105 Fax: (209) 477-8148 <br />