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COLUMBIA ANALYTICAL SERVICES,INC. <br /> QA/QC Report <br /> Client: Shaw Environmental&Infrastructure,Inc Service Request: P0900161 <br /> Project: Foothill Landfill,San Joaquin County/124591(Ground Water) Date Extracted: 01/21/2009 <br /> Sample Matrix: Water Date Analyzed: 01/21/2009 <br /> Lab Control Spike Summary <br /> Y <br /> Volatile Organic Compounds <br /> Extraction Method: EPA 5030B Units: ug/L <br /> Analysis Method: 8260B Basis: NA <br /> Level: Low <br /> Extraction Lot: PWG0900148 <br /> Lab Control Sample <br /> PWG0900148-3 <br /> Lab Control Spike <br /> %Rec <br /> Analyte Name Result Expected %Rec Limits <br /> 1,1,1,2-Tetrachloroethane 11.5 10.0 115 85-124 <br /> 1,1,1-Trichloroethane(TCA) 10.9 10.0 109 72-131 <br /> 1,1,2,2-Tetrachloroethane 12.1 10.0 121 81-127 <br /> 1,1,2-Trichloroethane 11.1 10.0 111 87-119 <br /> 1,1,2-Trichlorotrifluoroethane 10.0 10.0 100 38-160 <br /> 1,1-Dichloroethane 10.2 10.0 102 78-119 <br /> 1,1-Dichloroethene 9.88 10.0 99 50-136 <br /> 1,1-Dichloropropene 10.6 10.0 106 68-131 <br /> 1,2,3-Trichlorobenzene 11.5 10.0 115 67-140 <br /> 1,2,3-Trichloropropane 11.2 10.0 112 80-122 <br /> 1,2,4-Trichlorobenzene 11,6 10.0 116 76-129 <br /> 1,2,4-Trimethylbenzene 11.7 10.0 117 88-124 <br /> 1,2-Dibromo-3-chloropropane 24.4 20.0 122 60-125 <br /> 1,2-Dibromoethane(EDB) 11.3 10.0 113 88-118 <br /> 1,2-Dichlorobenzene 10.7 10.0 107 90-117 <br /> 1,2-Dichloroethane(EDC) 10.9 10.0 109 78-125 <br /> 1,2-Dichloropropane 11.3 10.0 113 88-119 <br /> 1,3,5-Trimethylbenzene 11.4 10.0 114 83-124 <br /> 1,3-Dichlorobenzene 11.0 10.0 110 91-118 <br /> 1,3-Dichloropropane 10.9 10.0 109 84-118 <br /> 1,4-Dichlorobenzene 10.9 10.0 109 90-119 <br /> 2,2-Dichloropropane 11.8 10.0 118 66-142 <br /> 1 2-Butanone(MEK) 54.6 50.0 109 70-133 <br /> 2-Chlorotoluene 11.2 10.0 112 85-116 <br /> 2-Hexanone 56.5 50.0 113 62-145 <br /> 4-Chlorotoluene 11.1 10.0 ill 89-118 <br /> 4-IsopropyItoluene 11.4 10.0 114 78-129 <br /> 4-Methyl-2-pentanone(MIBK) 57.3 50.0 115 72-144 <br /> Acetone 53.3 50.0 107 70-138 <br /> Acrolein 41.1 40.0 103 47-147 <br /> Acrylonitrile 22.9 20.0 115 81-125 <br /> Benzene 10.7 10.0 107 82-121 <br /> Bromobenzene 10.8 10.0 108 81-129 <br /> Bromochloromethane 10.7 10.0 107 86-120 <br /> Bromodichloromethane 11.8 10.0 118 87-125 <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 /> 22 <br /> Analyst:KMiller Form 3C-Organic Page 1 of 2 <br /> Printed: 01/23/2009 10:05:06 <br /> P:\STEALTti\CRYSTAL.RYnForm3LCS.rpt SuperSet Reference: RR15207 <br />