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1 � • <br /> PRECISION <br /> ' ENMO-TECH <br /> Analytical Laboratory CERTIFICATE OF ANALYSIS <br /> Wednesday,March 2,2005 <br /> Attention: Francis X. Bean <br /> ' Kleinfelder,Inc. Report Page 19 of2/ <br /> 2825 East Myrtle Street <br /> Stockton, CA 95205 <br /> ' Total Petroleum Hydrocarbons-Gasoline-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 AC50203-Volatiles <br /> Blank(AC50203-BLKI) Prepared&Analyzed:02-Mar-05 <br /> TPH-Gasoline ND 200 ug/kg <br /> Surrogate:4-Broofluorobenzene 42.0 50.0 84 75-125 <br /> 1 <br /> mgiL=milligrams per Liter=ppm DLR=Detection Limit for Porrpose f Reyarting. <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 /> 7743 N. West Lane. Shite B2 Stockton CA. 95210 Nione: (209) 477-8105 Fax: ('209) -177-8148 <br />