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PRECISION <br /> ENVIRO-TECH <br /> Analytical Laboratory CERTIFICATE OFANAL YSIS <br /> Tuesday,March 13, 2007 <br /> Attention: Guy W.Roy <br /> R$L Diesel Report Page 14 of 23 <br /> P.O.Box 2498 <br /> Danville, CA 94528 <br /> Total Petroleum Hydrocarbons-Diesel Range <br /> Sample Informa ion <br /> Sample ID: Under Tank Sample Type: Grab <br /> Laboratory ID: 7022608-02 Project Name: UST-Waste Oil <br /> Date/Time Sampled.• 26-Feb-07 00:00 by Guy W.Roy Sample Matrix: Soil <br /> i <br /> Test Parameter Result DLR Unit Dilution Batch Pr ared Analysis Date Method Nates <br /> TPH-Diesel 22900 1.00 mg/kg 1 AC70901 09-Mar-07 09-Mar-07 EPA 8015M <br /> I <br /> 4 <br /> mg/L=milligrams per Liter=ppm DLR—Detection Limit for Purpose of Reporting. <br /> ug/L—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) 47 -8105 Fax: (209) 477-8148 i <br /> i <br />