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0 . <br /> PRECISION <br /> ENVIRO-TECH <br /> nalytical Laboratory CERTIFICATE OF ANALYSIS <br /> e Tuesdnv,April 12,2005 <br /> Aliention: Francis X. Bean <br /> Kleinfelder, Inc. Report Page 38 of 39 <br /> 2825 East Myrtle Street <br /> Stockton, CA 95205 <br /> Total Petroleum Hydrocarbons-Diesel Range-Quality Control <br /> Precision Enviro-Tech <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch AD51205-Solvent Extraction <br /> Blank(AD51205-BLK1) Prepared&Analyzed:12-Apr-05 <br /> TPH-Diesel ND 1000 ug/kg <br /> LCS(AD51205-BSI) Prepared&Analyzed:12-Apr-05 <br /> TPH-Diesel 4800 1000 ug/kg 5000 96 75-125 <br /> Matrix Spike(AD51205-MSI) Source:5041107-01 Prepared&Analyzed:12-Apr-05 <br /> TPH-Diesel 4650 1000 ug/kg 5000 0.00 93 75-125 <br /> Matrix Spike Dup(AD51205-MSDI) Source:5041107-01 Prepared&Analyzed:12-Apr-05 <br /> TPH-Diesel 4720 1000 ug/kg 5000 0.00 94 75-125 1 20 <br /> f <br /> mg L=milligrams per Liter=ppm DLR=Detection Limitfor Purpose ofReporling. <br /> ng,L=micrograms per Liter=ppb Exceptional sample maMces or interferences may <br /> result in higher detection limits. <br /> RESPECTFULLY SUBMITTED, <br /> 6::�low� <br /> Jonathan Le,Laboratory Director <br /> 7743-N. West Lane. Suite B2 Stockton CA. 95210 nhone: (209) 477-8105 Fax: (209)4"17-8148 <br />