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• • <br /> PRECISION <br /> OnENVIRO-TECH <br /> Analytical Laboratory CERTIFICATE OF ANALYSIS <br /> Wednesday,April 20,2005 <br /> Attention: Doug Heard <br /> Kleinfelder, Inc. Report Page 18 of 26 <br /> 2825 Myrtle St. <br /> Stockton, CA 95205 <br /> Extractable Petroleum Hydrocarbons by 8015 DRO-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 AD52008-Solvent Extraction <br /> Blank(AD52008-BLKI) Prepared&Analyzed:20-Apr-05 <br /> TPH-Motor Oils ND 5000 ug/kg <br /> mglL=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 /> 743 N. ff`est Lana . Suite 132 Stockton CA. 952.10 phone: (209) 477-8105 Fax: (209) 477-41=18 <br />