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COLUMBIA ANALYTICAL SERVICES,INC. <br /> QA/QC Report <br /> Client: Shaw Environmental&Infrastructure,Inc Service Request: P0800213 <br /> Project: Foothill Landfill,San Joaquin County/124591 (Ground Water) Date Extracted: 02/08/2008 <br /> Sample Matrix: Water Date Analyzed: 02/08/2008 <br /> Lab Control Spike/Duplicate Lab Control Spike Summary <br /> Volatile Organic Compounds <br /> Extraction Method: EPA 5030B Units: ugiL <br /> Analysis Method: 8260B Basis: NA <br /> Level: Low <br /> Extraction Lot: PWG0800288 <br /> Lab Control Sample Duplicate Lab Control Sample <br /> PWG0800288-3 PWG0800288-5 <br /> Lab Control Spike Duplicate Lab Control Spike <br /> %Rec RPD <br /> Analyte Name Result Expected %Rec Result Expected %Rec Limits RPD Limit <br /> 1,1,1,2-Tetrachloroethane 10.2 10.0 102 9.75 10.0 98 74-129 5 25 <br /> I,I,I-Trichloroethane(TCA) 9.82 10.0 98 8.96 10.0 90 61-125 9 25 <br /> 1,1,2;2-Tetrachloroethane 10.9 10.0 109 10.8 10.0 108 81-128 1 25 <br /> 1,1,2-Trichloroethane 10.5 10.0 105 10.5 10.0 105 87-115 0 25 <br /> 1,1,2-Trichl orotrifluoroethane 5.54 10.0 55 * 5.05 10.0 51 * 66-134 ' 9 25 <br /> 1,1-Dichloroethane 10.1 10.0 101 9.47 10.0 95 75-118 6 25 <br /> 1,1-Dichloroethene 6.88 10.0 69 6.39 10.0 64 * 67-129 7 25 <br /> 1,1-Dichloropropene 8.57 10.0 86 7.88 10.0 79 64-105 8 25 <br /> 1,2,3-Trichlorobenzene 9.62 10.0 96 9.45 10.0 95 73-132 2 25 <br /> 1,2,3-Trichloropropane 9.37 10.0 94 9.73 10.0 97 79-119 4 25 <br /> 1,2,4-Trichlorobenzene 9.55 10.0 96 9.20 10.0 92 78-126 4 25 <br /> 1,2,4-Trimethylbenzene 10.7 10.0 107 10.3 10.0 103 78-113 3 25 <br /> 1,2-Dibromo-3-chloropropane 17.9 20.0 89 17.7 20.0 89 60-118 1 25 <br /> 1,2-Dibromoediane(EDB) 9.19 10.0 92 9.41 10.0 94 85-113 2 25 <br /> 1,2-Dichlorobenzene 10.7 10.0 107 10.3 10.0 103 90-113 4 25 <br /> 1,2-Dichloroethane(EDC) 10.8 10.0 108 10.4 10.0 104 65-128 3 25 <br /> 1,2-Dichloropropane 10.9 10.0 109 10.5 10.0 105 80-116 4 25 <br /> 1,3,5-Trimethylbenzene 10.3 10.0 103 9.92 10.0 99 75-112 4 25 <br /> 1,3-Dichlorobenzene 10.7 10.0 107 10.3 10.0 103 88-112 4 25 <br /> 1,3-Dichloropropane 9.84 10.0 98 10.0 10.0 100 82-113 2 25 <br /> 1,4-Dichlorobenzene 10.7 10.0 107 10.3 10.0 103 90-112 3 25 <br /> 2,2-Dichloropropane 8.86 10.0 89 8.54 10.0 85 64-126 4 25 <br /> 2-Butanone(MEK) 45.5 50.0 91 45.5 50.0 91 73-137 0 25 <br /> 2-Chlorotoluene 10.2 10.0 102 10.0 10.0 100 74-116 2 25 <br /> 2-Hexanone 45.6 50.0 91 48.3 50.0 97 80-129 6 25 <br /> 4-Chlorotoluene 10.5 10.0 105 10.2 10.0 102 73-114 3 25 <br /> 4-Isopropyltoluene 10.5 10.0 105 9.95 10.0 100 74-113 6 25 <br /> 4-Methyl-2-pentanone(MIBK) 49.3 50.0 99 50.2 50.0 100 77-136 2 25 <br /> Acetone 45.5 50.0 91 43.0 50.0 86 70-139 6 25 <br /> Acrolein 17.2 40.0 43 17.8 40.0 45 24-162 3 25 <br /> Acrylonitrile 16.3 20.0 81 * 16.0 20.0 80 * 82-132 2 25 <br /> Benzene 9.97 10.0 100 9.45 10.0 95 81-113 5 25 <br /> Bromoberizene 10.4 10.0 104 10.0 10.0 100 82-123 4 25 <br /> Bromochloromethane 9.41 10.0 94 9.25 10.0 93 84-118 2 25 <br /> Bromodichloromethane 11.0 10.0 110 10.4 10.0 104 68-129 6 25 <br /> Bromoform 9.57 10.0 96 9.28 10.0 93 52-169 3 25 <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 /> 2 <br /> Printed: 02/13/2008 12:15:19 Form 3C-Organic Page 1 of 2 <br /> P:\STL-ALTH\C.RYSTAl..RPh.Fonn3DLC.rpt SuperSet Reference: RR14352 <br />