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COLUMBIA ANALYTICAL SERVICES,INC. <br /> QA/QC Report <br /> Client: Shaw Environmental&Infrastructure,Inc Service Request: P0800887 <br /> Project: Foothill Landfill,San Joaquin County/124591 (Ground Water) Date Extracted: 04/02/2008 <br /> Sample Matrix: Water Date Analyzed: 04/02/2008 <br /> Lab Control Spike Summary <br /> Volatile Organic Compounds <br /> Extraction Method: EPA 5030B Units: ug/L <br /> Analysis Method: 8260B Basis: NA <br /> Level: Low <br /> Extraction Lot: PWG0800501 <br /> Lab Control Sample <br /> PWG0800501-3 <br /> Lab Control Spike %Rec <br /> Analyte Name Result Expected %Rec Limits <br /> Bromoform 11.6 10.0 116 52-169 <br /> Bromomethane 10.6 10.0 106 59-139 <br /> Carbon Disulfide 23.4 20.0 117 59-118 <br /> Carbon Tetrachloride 11.3 10.0 113 52-134 <br /> Chlorobenzene 10.7 10.0 107 87-113 <br /> Chloroethane 11.0 10.0 110 67-134 <br /> Chloroform 11.0 10.0 110 74-121 <br /> Chloromethane 11.4 10.0 114 68-125 <br /> cis-1,2-Dichloroethene 10.6 10.0 106 76-117 <br /> cis-1,3-Dichloropropene 10.9 10.0 109 77-112 <br /> Dibromochloromethane 11.0 10.0 110 69-137 <br /> Dibromomethane 10.7 10.0 107 81-119 <br /> Dichlorodifluoromethane 12.7 10.0 127 52-152 <br /> Ethylbenzene 10.5 10.0 105 82-114 <br /> Hexachlorobutadiene 10.7 10.0 107 59-141 <br /> Iodomethane 24.1 20.0 120 71-133 <br /> Isopropylbenzene 10.9 10.0 109 76-112 <br /> Total Xylenes 32.4 30.0 108 81-115 <br /> Methyl tert-Butyl Ether 22.6 20.0 113 75-114 <br /> Methylene Chloride 10.5 10.0 105 82-120 <br /> n-Butylbenzene 10.3 10.0 103 68-116 <br /> n-Propylbenzene 10.4 10.0 104 71-121 <br /> Naphthalene 11.0 10.0 110 78-127 <br /> sec-Butylbenzene 11.0 10.0 110 * 69-107 <br /> Styrene 10.9 10.0 109 73-111 <br /> tert-Butylbenzene 10.4 10.0 104 73-113 <br /> Tetrachloroethene(PCE) 10.1 10.0 101 78-115 <br /> Toluene 9.99 10.0 100 81-112 <br /> trans-1,2-Dichloroethene 10.8 10.0 108 75-I13 <br /> trans-1,3-Dichloropropene 10.1 10.0 101 67-115 <br /> trans-l,4-Dichloro-2-butene 20.8 20.0 104 24-146 <br /> Trichloroethene(TCE) 10.5 10.0 105 77-113 <br /> Trichlorofluoromethane 12.2 10.0 122 50-159 <br /> Vinyl Acetate 30.8 20.0 154 * 84-146 <br /> Vinyl Chloride 11.4 10.0 114 66-135 <br /> Results(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 /> 20 <br /> Analyst:CCapolup Fonn 3C-Organic Page 2 of <br /> Printed: 04/04/2008 18:03:20 <br /> P:`STEALTH\CRYSTAL.Rmronn3LCS.rpt SuperSet Reference: RR14524 <br />