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91 <br />Client: <br />e <br />Project: <br />Sample Matrix: <br />COLUMBIA ANALYTICAL SERVICES, INC. <br />QA/QC Report <br />Shaw Environmental & Infrastructure, Inc <br />Foothill Landfill, San Joaquin County/791289 (Leachate Module) <br />Water <br />Extraction Method: EPA 5030B <br />Analysis Method: 8260B <br />Lab Control Spike Summary <br />Volatile Organic Compounds <br />Service Request: P0700116 <br />Date Extracted: 02/13/2007 <br />Date Analyzed: 02/13/2007 <br />Units: <br />ug/L <br />Basis: <br />NA <br />Level: <br />Low <br />Extraction Lot: <br />PWG0700310 <br />i] <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 />Printed: 02/16/2007 08:34:46 Form 3C - Organic Page 3 of 3 <br />P:\STEALTMCRYSTAL.RPT\Fom13LCS.rpt SuperSet Reference: RR13372 <br />Lab Control Sample <br />PWG0700310-3 <br />Lab Control Spike <br />%Ree <br />Analyte Name <br />Result Expected %Rec <br />Limits <br />Vinyl Acetate <br />18.9 20.0 94 <br />77-154 <br />Vinyl Chloride <br />9.87 10.0 99 <br />68-134 <br />i] <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 />Printed: 02/16/2007 08:34:46 Form 3C - Organic Page 3 of 3 <br />P:\STEALTMCRYSTAL.RPT\Fom13LCS.rpt SuperSet Reference: RR13372 <br />