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COLUMBIA ANALYTICAL SERVICES,INC. <br /> QA/QC Report <br /> Client: Shaw Environmental&Infrastructure,Inc Service Request: P0700322 <br /> Project: Harney Lane Landfill,San Joaquin County/124593(Ground Water) Date Extracted: 04/05/2007 <br /> Sample Matrix: Water Date Analyzed: 04/05/2007 <br /> Lab Control Spike Summary <br /> Volatile Organic Compounds <br /> Extraction Method: METHOD Units: ug/L <br /> Analysis Method: 624M Basis: NA <br /> Level: Low <br /> Extraction Lot: PWG0700543 <br /> Lab Control Sample <br /> PWG0700543-3 <br /> Lab Control Spike %Rec <br /> Analvte Name Result Expected %Rec Limits <br /> 1,1,1-Trichloroethane(TCA) 20.0 20.0 100 75-125 <br /> 1,1,2,2-Tetrachloroethane 22.9 20.0 115 60-140 <br /> 1,1,2-Trichloroethane 21.5 20.0 107 71-129 <br /> 1,1,2-Trichlorotrifl uoroethane 18.2 20.0 91 67-134 <br /> 1,1-Dichloroethane 18.9 20.0 94 72-128 <br /> 1,1-Dichloroethene 17.7 20.0 89 50-150 <br /> 1,2-Dichlorobenzene 21.1 20.0 106 63-137 <br /> 1,2-Dichloroethane(EDC) 20.0 20.0 100 68-132 <br /> 1,2-Dichloropropane 19.5 20.0 97 34-166 <br /> 1,3-Dichlorobenzene 20.6 20,0 103 73-127 <br /> 1,4-Dichlorobenzene 20.4 20.0 102 63-137 <br /> 2-Chloroethyl Vinyl Ether 46.0 40.0 115 1-224 <br /> Benzene 18.8 20.0 94 64-136 <br /> Bromodichloromethane 19.9 20.0 100 66-134 <br /> Bromoform 26.8 20.0 134 * 71-129 <br /> Bromomethane 17.4 20.0 87 14-186 <br /> Carbon Tetrachloride 21.5 20.0 108 73-127 <br /> Chlorobenzene 20.5 20.0 102 66-134 <br /> Chloroethane 20.8 20.0 104 38-162 <br /> Chloroform 19.2 20.0 96 68-132 <br /> Chloromethane 19.2 20.0 96 1-204 <br /> cis-1,2-Dichloroethene 18.4 20.0 92 82-121 <br /> cis-1,3-Dichloropropene 19.7 20.0 99 24-176 <br /> Dibromochloromethane 25.1 20.0 125 68-132 <br /> Dichlorodifluoromethane 23.3 20.0 117 68-164 <br /> Ethylbenzene 20.5 20.0 102 59-141 <br /> Total Xylenes 62.2 60.0 104 83-118 <br /> Methyl tert-Butyl Ether 35.8 40.0 90 68-119 <br /> Methylene Chloride 17.6 20.0 88 60-140 <br /> Tetrachloroethene(PCE) 21.5 20.0 108 74-126 <br /> Toluene 21.2 20.0 106 74-126 <br /> trans-1,2-Dichloroethene 17.4 20.0 87 70-130 <br /> trans-1,3-Dichloropropene 20.8 20.0 104 50-150 <br /> Trichloroethene(TCE) 19.1 20.0 96 66-134 <br /> Trichlorofluoromethane 19.9 20.0 100 48-152 <br /> Vinyl Chloride 21.2 20.0 106 4-196 <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 /> 21 <br /> Printed: 04/09/2007 13:59:39 Form 3C-Organic Page 1 of 1 <br /> P:\STEALTH\CRYSTAL.RPTTorm3LCS.rpt SuperSetReference: RR13511 <br />