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COLUMBIA ANALYTICAL SERVICES,INC. <br /> QA/QC Report <br /> Client: Shaw Environmental&Infrastructure,Inc Service Request: P0900671 <br /> Project: Foothill Landfill,San Joaquin County/124591 (Resample) Date Extracted: 02/27/2009 <br /> Sample Matrix: Water Date Analyzed: 02/27/2009 <br /> Matrix Spike/Duplicate Matrix Spike Summary <br /> Volatile Organic Compounds <br /> Sample Name: Batch QC Units: ug/L <br /> Lab Code: P0900644-004 Basis: NA <br /> Extraction Method: EPA 5030B Level: Low <br /> Analysis Method: 8260B Extraction Lot: PWG0900261 <br /> Batch QCMS Batch QCDMS <br /> PWG0900261-1 PWG0900261-2 <br /> Sample Matrix Spike Duplicate Matrix Spike %Rec RPD <br /> Analyte Name Result Result Expected %Rec Result Expected %Rec Limits RPD Limit <br /> 1,1-Dichloroethene 0.46 10.2 10.0 98 9.89 10.0 94 48-153 3 26 <br /> Trichloroethene(TCE) 1.5 13.1 10.0 116 12.6 10.0 ill 61-143 4 24 <br /> i <br /> Results flagged with an asterisk(*)indicate values outside control criteria. <br /> Results flagged with a pound(#)indicate the control criteria is not applicable. <br /> Percent recoveries and relative percent differences(RPD)are determined by the software using values in the calculation which have not been rounded. <br /> 11 <br /> Analyst:KMiller Form 3A-Organic Page 1 of 1 <br /> Printed: 03/09/2009 16:14:38 <br /> P:\STEALTH\CRXSTAL.RPT\Form3DMS.tpt SuperSetReference: RR15263 <br />