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COLUMBIA ANALYTICAL SERVICES,INC. <br /> QA/QC Report <br /> Client: Shaw Environmental&Infrastructure,Inc Service Request: P0802431 <br /> Project: Foothill Landfill,San Joaquin County/124591 (Ground Water) Date Extracted: 08/06/2008 <br /> Sample Matrix: Water Date Analyzed: 08/06/2008 <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: PWO0801029 <br /> Lab Control Sample <br /> PWG0801029-3 <br /> Lab Control Spike %aRec <br /> Analyte Name Result Expected %nRec Limits <br /> Bromoform 10.6 10.0 106 54-147 <br /> Bromomethane 12.3 10.0 123 69-132 <br /> Carbon Disulfide 19.7 20.0 98 63-135 <br /> Carbon Tetrachloride 9.99 10.0 100 63-132 <br /> Chlorobenzene 10.4 10.0 104 84-117 <br /> Chloroethane 12.2 10.0 122 70-137 <br /> Chloroform 10.7 10.0 107 80-121 <br /> Chloromethane 11.8 10.0 118 64-141 <br /> cis-1,2-Dichloroethene 10.7 10.0 107 79-119 <br /> cis-1,3-Dichloropropene 10.9 10.0 109 78-122 <br /> Dibromochloromethane 10.7 10.0 107 75-129 <br /> Dibromomethane 10.2 10.0 102 81-122 <br /> Dichlorodifluoromethane 10.4 10.0 104 46-156 <br /> Ethylbenzene 10.6 10.0 106 82-117 <br /> Hexachlorobutadiene 11.2 10.0 112 77-127 <br /> Iodomethane 20.6 20.0 103 70-134 <br /> Isopropylbenzene 10.9 10.0 109 80-123 <br /> Total Xylenes 31.6 30.0 105 80-119 <br /> Methyl tert-Butyl Ether 19.2 20.0 96 80-126 <br /> Methylene Chloride 10.4 10.0 104 76-125 <br /> n-Butylbenzene 10.9 10.0 109 67-133 <br /> n-Propylbenzene 10.7 10.0 107 74-125 <br /> Naphthalene 9.62 10.0 96 80-127 <br /> sec-Butylbenzene 11.6 10.0 116 82-134 <br /> Styrene 10.7 10.0 107 83-120 <br /> tent-Butylbenzene 10.8 10.0 108 79-121 <br /> Tetrachloroethene(PCE) 10.8 10.0 108 78-116 <br /> Toluene 10.5 10.0 105 81-117 <br /> trans-1,2-Dichloroethene 10.0 10.0 100 71-121 <br /> trans-1,3-Dichloropropene 10.3 10.0 103 75-123 <br /> trans-1,4-Dichloro-2-butene 18.4 20.0 92 32-159 <br /> Trichloroethene(TCE) 10.4 10.0 104 77-116 <br /> Trichlorofluoromethane 11.3 10.0 113 59-152 <br /> Vinyl Acetate 12.4 20.0 62 * 83-165 <br /> Vinyl Chloride 11.8 10.0 118 70-139 <br /> Results nagged 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 /> 26 <br /> Analyst:KMiller Form 3C-Organic Page 2 of 2 <br /> Printed: 08/13/2008 16:41:07 <br /> P:\STEALTH\CRYSTAL.RPT)Fonn3LCS.cpt Superset Reference: RR14904 <br />