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0 <br />n <br />COLUMBIA ANALYTICAL SERVICES, :INC. <br />QA/QC Report <br />Client: Shaw Environmental & Infrastructure, Inc Service Request: P0700704 <br />Project: Foothill Landfill, San Joaquin County (New Wells)/124591 Date Extracted: 08/08/2007 <br />Sample Matrix: Water Date Analyzed: 08/08/2007 <br />Extraction Method: EPA 5030B <br />Analysis Method: 8260B <br />Lab Control Spike Summary <br />Volatile Organic Compounds <br />Units: <br />ug/L <br />Basis: <br />NA <br />Level: <br />Low <br />Extraction Lot: <br />PWG0701151 <br />0 <br />C <br />u <br />r <br />Results flagged with an asterisk (*) indicate values outside control criteria. <br />Percent recoveries and relative penent differences (RPD) are determined by the sollware ushival es in the calculation which have not been rounded. <br />1 onn 3C - Organic Pa <br />Printed: 08/15/2007 07:41:23 g &e 3 of 3 <br />P:'STBAL1I-1\CRYSTAL.RPT\Fonn3LCS.ipt Superset Reference: RR13820 <br />Analyte Flame <br />Lab Control Sample <br />PWG0701151-3 <br />Lab Control Spike <br />Result Expected %Rec <br />%Rec <br />Limits <br />tert-Butyl Alcohol <br />200 <br />200 <br />100 <br />81-131 <br />tert-Butyl Ethyl Ether <br />19.0 <br />20.0 <br />95 <br />81-125 <br />tert-Butylbenzene <br />7.87 <br />10.0 <br />79 <br />79-116 <br />Tetrachloroethene (PCE) <br />8.93 <br />10.0 <br />89 <br />76-123 <br />Toluene <br />9.29 <br />10.0 <br />93 <br />83-115 <br />trans-l,2-Dichloroethene <br />8.62 <br />10.0 <br />86 <br />78-124 <br />trans-l,3-Dichloropropene <br />trans-l,4-Dichloro-2-butene <br />9.19 <br />17.3 <br />10.0 <br />20.0 <br />92 <br />86 <br />82-121 <br />75-131 <br />Trichloroethene (TCE) <br />8.57 <br />10.0 <br />86 <br />78-120 <br />Trichlorofluoromethane <br />7.27 <br />10.0 <br />73 <br />45-158 <br />Vinyl Acetate <br />22.3 <br />20.0 <br />111 <br />64-163 <br />Vinyl Chloride <br />7.46 <br />10.0 <br />75 <br />68-139 <br />0 <br />C <br />u <br />r <br />Results flagged with an asterisk (*) indicate values outside control criteria. <br />Percent recoveries and relative penent differences (RPD) are determined by the sollware ushival es in the calculation which have not been rounded. <br />1 onn 3C - Organic Pa <br />Printed: 08/15/2007 07:41:23 g &e 3 of 3 <br />P:'STBAL1I-1\CRYSTAL.RPT\Fonn3LCS.ipt Superset Reference: RR13820 <br />