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COLUMBIA ANALYTICAL SERVICES,INC. <br /> QA/QC Report <br /> Client: Shaw Environmental&Infrastnicture,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: ug/L <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 Dupiicate Lab Control:Spike %oRec RPD <br /> Analyte Name Result Expected %Rec Result Expected %Rec Limits RPD Limit <br /> Bromomethane 13.0 10.0 130 11.1 10.0 111 59-139 15 25 <br /> Carbon Disulfide 10.3 20.0 52 * 9.11 20.0 46 * 59-118 12 25 <br /> Carbon Tetrachloride 9.04 10.0 90 8.34 10.0 83 52-134 8 25 <br /> Chlorobenzene 10.3 10.0 103 10.1 10.0 101 87-113 2 25 <br /> Chloroethane 12.6 10.0 126 11.1 10.0 111 67-134 12 25 <br /> Chloroform 10.6 10.0 106 9.92 10.0 99 74-121 6 25 <br /> Chloromethane 10.4 10.0 104 9.22 10.0 92 68-125 12 25 <br /> cis-1,2-Dichloroethene 9.66 10.0 97 9.17 10.0 92 76-117 5 25 <br /> cis-1,3-Dichloropropene 10.0 10.0 100 9.76 10.0 98 77-112 2 25 <br /> Dibromochloromethane 10.2 10.0 102 10.2 10.0 102 69-137 1 25 <br /> Dibromomethane 10.1 10.0 101 9.78 10.0 98 81-119 3 25 <br /> Dichlorodifluoromethane 6.68 10.0 67 6.10 10.0 61 52-152 9 25 <br /> Ethylbenzene 10.3 10.0 103 10.0 10.0 100 82-114 3 25 <br /> Hexachlorobutadiene 10.0 10.0 100 9.34 10.0 93 59-141 7 25 <br /> Iodomethane 13.8 20.0 69 * 12.7 20.0 63 * 71-133 9 25 <br /> Isopropylbenzene 10.4 10.0 104 9.98 10.0 100 76-112 4 25 <br /> Total Xylenes 30.3 30.0 101 29.1 30.0 97 81-115 4 25 <br /> Methyl tert-Butyl Ether 18.1 20.0 90 17.6 20.0 88 75-114 3 25 <br /> Methylene Chloride 9.73 10.0 97 9.28 10.0 93 82-120 5 25 <br /> n-Butylbenzene 10.9 10.0 109 10.2 10.0 102 68-116 6 25 <br /> n-Propylbenzene 10.5 10.0 105 10.2 10.0 102 71-121 3 25 <br /> Naphthalene 9.15 10.0 92 9.08 10.0 91 78-127 1 25 <br /> sec-Butylbenzene 11.5 10.0 115 * 11.0 10.0 110 * 69-107 5 25 <br /> Styrene 10.2 10.0 102 9.82 10.0 98 73-111 4 25 <br /> tert-Butylbenzene 10.0 10.0 100 9.85 10.0 99 73-113 2 25 <br /> Tetra chloroethene(PCE) 9.26 10.0 93 8.93 10.0 89 78-115 4 25 <br /> Toluene 9.71 10.0 97 9.71 10.0 97 81-112 0 25 <br /> trans-1,2-Dichloroethene 8.20 10.0 82 7.70 10.0 77 75-113 6 25 <br /> trans-1,3-Dichloropropene 9.57 10.0 96 9.67 10.0 97 67-115 1 25 <br /> trans-l,4-Dichloro-2-butene 19.9 20.0 100 18.3 20.0 91 24-146 9 25 <br /> Trichloroethene(TCE) 9.70 10.0 97 9.16 10.0 92 77-113 6 25 <br /> Trichlorofluoromethane 11.2 10.0 112 9.35 10.0 94 50-159 18 25 <br /> Vinyl Acetate 20.3 20.0 102 20.5 20.0 103 84-146 1 25 <br /> Vinyl Chloride 11.0 10.0 1.10 10.0 10.0 100 66-135 9 25 <br /> Resuns(lagged 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 /> 25 <br /> Printed: 02/13/2008 12:15:19 Form 3C-Organic Page 2 of 2 <br /> P"STEALTH%.CRY STA L.RPTF orm3DLC.ipt SuperSet Reference: RR14352 <br />