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COLUMBIA ANALYTICAL SERVICES,INC. <br /> QA/QC Report <br /> Client: Shaw Environmental&Infrastructure,Inc Service Request: P0900162 <br /> Project: Foothill Landfill,San Joaquin County/124591 (Leachate Module) Date Extracted: 01/21/2009 <br /> Sample Matrix: Water Date Analyzed: 01/21/2009 <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: PWG0900148 <br /> Lab Control Sample <br /> PWG0900148-3 <br /> Lab Control Spike <br /> %Rec <br /> Analyte Name Result Expected %Rec Limits <br /> Trichloroethene(TCE) 10.4 10.0 104 77-123 <br /> Trichlorofluoromethane 9.65 10.0 97 64-147 <br /> Vinyl Acetate 20.0 20.0 100 56-144 <br /> Vinyl Chloride 9.98 10.0 100 56-148 <br /> 1 <br /> Results nagged with an asterisk(*)indicate values outside control criteria. <br /> Percent recoveries and relative percent differences(RPD)are detennined by the software using values in the calculation which have not been rounded. <br /> 17 <br /> Analyst:KMiller Form 3C-Organic Page 3 of 3 <br /> Printed: 01/23/2009 10:06:37 <br /> P:\STEALTH\CRYSTAL.RPT\Pornn3LCS.rpt Superset Reference: RR15208 <br />