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ESO-TEClH <br /> Analytical Laboratory CERTIFICATE OFAN,4L SIS <br /> Tuesday,March 13, 2007 <br /> Attention: Guy W.Roy <br /> R&L Diesel Report Page 22 of 23 <br /> P.O.Box 2498 <br /> Danville, CA 94526 <br /> Total Petroleum Hydrocarbons-Diesel Range- Quality Control <br /> Precision Enviro- ech <br /> Reporting Sylike Source %REC RPD <br /> Analyte Result Limit Units vel Result %REC Limits RPD Limit Notes <br /> Batch AC70901 -Solvent Extractions <br /> Blank(AC70901-BLK1) Prepared&Analyzed:09-Mar-07 <br /> TPH-Diesel ND 1.00 mg/kg <br /> I <br /> ;I <br /> mg/L=milligrams per Liter—ppm DLR—Defection Limit for Purpose of Reporting. <br /> ugE micrograms per Liter—pph Exceptional sample matrices or interferences may <br /> result in higher detection limits. <br /> RESPECTFULLY SUBMITTED, <br /> i <br /> Jonathan Le,Laboratory Director i. <br /> 3935 N. Coronado Ave Stockton CA. 95204 phone: (209) 47 -8105 Fax: (209) 477-8148 <br />