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COLUMBIA ANALYTICAL SERVICES,INC. <br /> QA/QC Report <br /> Client: Shaw Environmental&Infrastructure,Inc Service Request: P0800193 <br /> Project: Foothill Landfill,San Joaquin County/124591 (Leachate Module) Date Extracted: 02/12/2008 <br /> Sample Matrix: Water Date Analyzed: 02/12/2008 <br /> Lab Control Spike Summary <br /> Volatile Organic Compounds <br /> Extraction Method: EPA 5030B Units: ug/L <br /> Analysis Method: 8260B Basis: NA <br /> 1Level: Low <br /> Extraction Lot: PWG0800308 <br /> Lab Control Sample <br /> PWG0800308-3 <br /> Lab Control Spike o <br /> /o Rec <br /> Analyte Name Result Expected %Rec Limits <br /> 1,1,1,2-Tetrachloroethane 10.2 10.0 102 74-129 <br /> 1,1,1-Trichloroethane(TCA) 10.9 10.0 109 61-125 <br /> 1,1,2,2-Tetrachloroethane 10.7 10.0 107 81-128 <br /> 1,1,2-Trichloroethane 10.6 10.0 106 87-115 <br /> 1,1,2-Trichlorotritluoroethane 10.6 10.0 106 66-134 <br /> 1,1-Dichloroethane 11.4 10.0 114 75-118 <br /> 1,1-Dichloroethene 12.0 10.0 120 67-129 <br /> 1,1-Dichloropropene 10.2 10.0 102 64-105 <br /> 1,2,3-Triclllorobenzene 9.67 10.0 97 73-132 <br /> 1,2,3-Trichloropropane 9.82 10.0 98 79-119 <br /> 1,2,4-Trichlorobenzene 9.57 10.0 96 78-126 <br /> 1,2,4-'frimethylbenzene 10.8 10.0 108 78-113 <br /> 1,2-Dibromo-3-chloropropane 17.8 20.0 89 60-118 <br /> 1,2-Dibromoethane(EDB) 9.63 10.0 96 85-113 <br /> 1,2-Dichlorobenzene 10.6 10.0 106 90-113 <br /> 1,2-Dichloroethane(EDC) 11.6 10.0 116 65-128 <br /> 1,2-Dichloropropane 11.4 10.0 114 80-116 <br /> 1,3,5-Trimethylbenzene 10.4 10.0 104 75-112 <br /> 1,3-Dichlorobenzene 10.4 10.0 104 88-112 <br /> 1,3-Dichloropropane 10.3 10.0 103 82-113 <br /> 1,4-Dichlorobenzene 10.6 10.0 106 90-112 <br /> 2,2-Dichloropropane 11.0 10.0 110 64-126 <br /> 2-Butanone(MEK) 46.1 50.0 92 73-137 <br /> 2-Chlorotoluene 10.4 10.0 104 74-116 <br /> 2-Hexanone 48.5 50.0 97 80-129 <br /> 4-Chlorotoluene 10.7 10.0 107 73-114 <br /> 4-Isopropyltoluene 10.4 10.0 104 74-113 <br /> 4-Methyl-2-pentanonc(MI13K) 50.8 50.0 102 77-136 <br /> Acetone 46.4 50.0 93 70-139 <br /> Acrylonitrile 15.8 20.0 79 * 82-132 <br /> Benzene 11.3 10.0 113 81-113 <br /> Bromobenzene 10.2 10.0 102 82-123 <br /> Bromochloromethane 10.4 10.0 104 84-118 <br /> Bromodichloromethane 11.1 10.0 111 68-129 <br /> Bromoform 9.50 10.0 95 52-169 <br /> Bromomethane 11.7 10.0 117 59-139 <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 /> 16 <br /> Printed: 02/15/2008 08:36:08 Fonn 3C-Organic Page I of 3 <br /> P:ISTEALTHY.CRYSTAL.RPT,Form3LCS.rpt SuperSet Reference: RR14357 <br />