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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 /> 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: PWG0900261 <br /> Lab Control Sample <br /> PWG0900261-3 <br /> Lab Control Spike <br /> %Rec <br /> Analyte Name Result Expected %Rec Limits <br /> 1,1-Dichloroethene 9.93 10.0 99 50-136 <br /> Trichloroethene(TCE) 10.8 10.0 108 77-123 <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. A <br /> Analyst:KMiller Form 3C-Organic Page 1 of 1 <br /> Printed: 03/09/2009 16:14.41 <br /> P:ISTEALTH\CRYSTAL.RPT1Form3LCS.rpt Superset Reference: RR15263 <br />