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COLUMBIA ANALYTICAL SERVICES,INC. <br /> QA/QC Report <br /> Client: Shaw Environmental&Infrastructure,Inc Service Request: P0700376 <br /> roject: Corral Hollow Landfill,San Joaquin County/124592(Ground Water) Date Extracted: 04/20/2007 <br /> W=vle Matrix: Water Date Analyzed: 04/20/2007 <br /> Lab Control Spike Summary <br /> Volatile Organic Compounds <br /> xtraction Method: EPA 5030B Units: ug/L <br /> clysis Method: 8260B Basis: NA <br /> Level: Low <br /> Extraction Lot: PWG0700642 <br /> Lab Control Sample <br /> PWG0700642-3 <br /> Lab Control Spike %Rec <br /> Analyte Name Result Expected %Rec Limits <br /> arbon Disulfide 18.8 20.0 94 62-116 <br /> arbon Tetrachloride 10.6 10.0 106 80-125 <br /> Chlorobenzene 9.64 10.0 96 84-117 <br /> Ihloroethane 9.35 10.0 94 75-133 <br /> hloroform 9.94 10.0 99 88-120 <br /> hloromethane 7.88 10.0 79 73-136 <br /> cis-1,2-Dichloroethene 10.3 10.0 103 83-125 <br /> s-1,3-Dichloropropene 9.74 10.0 97 86-126 <br /> tibromochloromethane <br /> 10.5 10.0 105 87-120 <br /> Dibromomethane 10.3 10.0 103 85-122 <br /> Iliftorodifluoromethane 9.56 10.0 96 43-151 <br /> enzene 9.27 10.0 93 79-116 <br /> Hexachlorobutadiene 10.6 10.0 106 68-137 <br /> (domehanet24.3 20.0 121 76-122 <br /> opropylbenzene 9.33 10.0 93 77-112 <br /> otal Xylenes 29.0 30.0 97 82-113 <br /> Methyl tert-Butyl Ether 20.0 20.0 100 83-127 <br /> ethylene Chloride 10.3 10.0 103 85-130 <br /> Butylbenzene 8.46 10.0 85 76-115 <br /> n-Propylbenzene 8.75 10.0 88 79-117 <br /> aphthalene 10.1 10.0 101 62-135 <br /> c-Butylbenzene 8.36 10.0 84 75-112 <br /> tyrene 8.94 10.0 89 84-119 <br /> tent-Butylbenzene 9.08 10.0 91 79-116 <br /> letrachloroethene(PCE) 9.81 10.0 98 76-123 <br /> oluene 8.89 10.0 89 83-115 <br /> trans-l,2-Dichloroethene 9.95 10.0 100 78-124 <br /> ans-1,3-Dichloropropene 8.76 10.0 88 82-121 <br /> s-1,4-Dichloro-2-butene 18.1 20.0 90 75-131 <br /> Trichloroethene(TCE) 9.64 10.0 96 78-120 <br /> (richlorofluoromethane 9.84 10.0 98 45-158 <br /> myl Acetate 19.7 20.0 98 64-163 <br /> inyl Chloride 8.78 10.0 88 68-139 <br /> e flagged with an asterisk(*)indicate values outside control criteria. <br /> ent recoveries and relative percent differences(RPD)are determined by the software using values in the calculation which have not been rounded. <br /> 38 <br /> Ianted: 04/25/2007 10:50:54 Form 3C-Organic Page 2 of 2 <br /> \STEALTMCRYSTAL.RPT,Fomi3LCS.rpt Superset Reference: RR13545 <br />