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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/]24591 (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 5030E Units: ug/L <br /> Analysis Method: 8260B Basis: NA <br /> Level: Low <br /> Extraction Lot: PWG0800501 <br /> Lab Control Sample <br /> 1 PWG0800501-3 <br /> Lab Control Spike %Rec <br /> Analyte Name Result Expected %Rec Limits <br /> 1,1,1,2-Tetrachloroethane 11.1 10.0 111 74-129 <br /> 1,1,1-Trichloroetl]ane(TCA) 11.2 10.0 112 61-125 <br /> 1,1,2,2-Tetrachloroethane 11.3 10.0 113 81-128 <br /> 1,1,2-Trichloroethane 10.2 10.0 102 87-115 <br /> 1,1,2-Trichlorotritluoroethane 11.8 10.0 118 66-134 <br /> 1,1-Dichloroethane 10.7 10.0 107 75-118 <br /> 1,1-Dichloroethene 11.1 10.0 111 67-129 <br /> 1,1-Dichloropropene 9.97 10.0 100 64-105 <br /> 1,2,3-Trichlorobenzene 10.9 10.0 109 73-132 <br /> 1,2,3-Trichloropropane 11.2 10.0 112 79-119 <br /> 1,2,4-Trichlorobenzene 10.7 10.0 107 78-126 <br /> 1,2,4-Trimethylbenzene 10.7 10.0 107 78-113 <br /> 1,2-Dibromo-3-chloropropane 20.4 20.0 102 60-118 <br /> 1,2-Dibromoethane(EDB) 10.4 10.0 104 85-113 <br /> 1,2-Dichlorobenzene 10.6 10.0 106 90-113 <br /> 1,2-Dichloroethane(EDC) 11.3 10.0 113 65-128 <br /> 1,2-Dichloropropane 10.5 10.0 105 80-116 <br /> 1,3,5-Trimethylbenzene 10.4 10.0 104 75-112 <br /> 1,3-Dichlorobenzene 10.5 10.0 105 88-112 <br /> 1,3-Dichloropropane 10.0 10.0 100 82-113 <br /> 1,4-Dichlorobenzene 10.4 10.0 104 90-112 <br /> 2,2-Dichloropropane 12.1 10.0 121 64-126 <br /> 2-Butanone(MEK) 57.8 50.0 116 73-137 <br /> 2-Chlorotoluene 10.1 10.0 101 74-116 <br /> 2-Hexanone 57.9 50.0 116 80-129 <br /> 4-Chlorotoluene 10.3 10.0 103 73-114 <br /> 4-Isopropyltoluene 10.8 10.0 108 74-113 <br /> 4-Methyl-2-pentanone(MIBK) 62.5 50.0 125 77-136 <br /> Acetone 58.1 50.0 116 70-139 <br /> Acrolein 32.5 40.0 81 24-162 <br /> Acrylonitrile 22.7 20.0 113 82132 <br /> Benzene 10.6 10.0 106 81-113 <br /> Bromobenzene 11.7 10.0 117 82-123 <br /> Bromochloromethane 11.0 10.0 110 84-118 <br /> Bromodichloromethane 11.3 10.0 113 68-129 <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 /> 19 <br /> Analyst:CCapolup Form 3C-Organic Page I of 2 <br /> Printed: 04/04/2008 18:03:20 <br /> P:\STEALTH,CRYSTAL.RMForm3LCS.rpt SuperSet Reference: RR14524 <br />