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COLUMBIA ANALYTICAL SERVICES,INC. <br /> QA/QC Report <br /> Client: Shaw Environmental&Infrastructure,Inc Service Request: P0802842 <br /> Project: Foothill Landfill,San Joaquin County/124591 (Resample) Date Extracted: 09/08/2008 <br /> Sample Matrix: Water Date Analyzed: 09/08/2008 <br /> 1 <br /> Lab Control Spike Summary <br /> Volatile Organic Compounds <br /> Extraction Method: EPA 5030B Units: ug/L <br /> Analysis Method: 8260B Basis: NA <br /> Level: Low <br /> Extraction Lot: PWG0801105 <br /> Lab Control Sample <br /> PWG0801105-3 <br /> Lab Control Spike <br /> %Rec <br /> Analyte Name Result Expected '%Rec Limits <br /> 1,1-Dichloroethene 9.80 10.0 98 64-133 <br /> Acetone 42.4 50.0 85 58-142 <br /> Results flagged with an asterisk indicate values outside control criteria. <br /> Percent recoveries and relative percent differences(RPD)are determined by the software using values in the calculation which have not been rounded. <br /> 12 <br /> Analyst:KMiller Form 3C-Organic Page 1 of 1 <br /> Printed: 09/11/2008 12:09:41 <br /> ,P:\STFALTH\CRYSTAL.RPT'To.3LCS.rpt SuperSetReference: RR 14944 <br />