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n <br />n <br />[l <br />0 <br />Ci <br />E <br />0 <br />11 <br />u <br />L <br />COLUMBIA ANALYTICAL SERVICES, INC. <br />QA/QC Report <br />Client: Shaw Environmental & Infrastructure, Inc <br />Project: Foothill Landfill/791289 (Ground Water) <br />Sample Matrix: Water <br />Lab Control Spike Summary <br />Volatile Organic Compounds <br />Extraction Method: EPA 5030B <br />Analysis Method: 8260B <br />Lab Control Sample <br />LWG0601249-3 <br />Lab Control Spike <br />%Rec <br />Analyte Name Result Expected %Rec Limits <br />Bromomethane <br />10.5 <br />10.0 <br />105 <br />46-148 <br />Carbon Disulfide <br />15.2 <br />20.0 <br />76 <br />63-122 <br />Carbon Tetrachloride <br />8.03 <br />10.0 <br />80 <br />66-139 <br />Chlorobenzene <br />9.26 <br />10.0 <br />93 <br />79-122 <br />Chloroethane <br />10.4 <br />10.0 <br />104 <br />65-134 <br />Chloroform <br />9.48 <br />10.0 <br />95 <br />78-131 <br />Chloromethane <br />10.7 <br />10.0 <br />107 <br />62-132 <br />cis-1,2-Dichloroethene <br />9.26 <br />10.0 <br />93 <br />78-123 <br />cis-1,3-Dichloropropene <br />9.92 <br />10.0 <br />99 <br />76-131 <br />Dibromochloromethane <br />9.70 <br />10.0 <br />97 <br />72-138 <br />Dibromornethane <br />9.89 <br />10.0 <br />99 <br />77-128 <br />Dichlorodifluoromethane <br />12.9 <br />10.0 <br />129 <br />51-149 <br />Ethylbenzene <br />8.33 <br />10.0 <br />83 <br />80-123 <br />Hexachlorobutadiene <br />8.01 <br />10.0 <br />80 <br />69-137 <br />Iodomethane <br />18.4 <br />20.0 <br />92 <br />48-145 <br />Isopropylbenzene <br />7.87 <br />10.0 <br />79 <br />74-125 <br />Total Xylenes <br />26.0 <br />30.0 <br />87 <br />78-128 <br />Methyl tert-Butyl Ether <br />21.4 <br />20.0 <br />107 <br />68-130 <br />Methylene Chloride <br />9.96 <br />10.0 <br />100 <br />77-124 <br />n-Butylbenzene <br />7.71 <br />10.0 <br />77 <br />74-128 <br />n-Propylbenzene <br />7.97 <br />10.0 <br />80 <br />75-132 <br />Naphthalene <br />9.63 <br />10.0 <br />96 <br />72-135 <br />sec-Butylbenzene <br />7.52 <br />10.0 <br />75 <br />74-126 <br />Styrene <br />9.97 <br />10.0 <br />100 <br />79-130 <br />tert-Butylbenzene <br />7.96 <br />10.0 <br />80 <br />75-129 <br />Tetrachloroethene (PCE) <br />7.85 <br />10.0 <br />79 <br />74-124 <br />Toluene <br />9.00 <br />10.0 <br />90 <br />78-125 <br />trans-1,2-Dichloroethene <br />8.62 <br />10.0 <br />86 <br />73-117 <br />trans-1,3-Dichloropropene <br />9.96 <br />10.0 <br />100 <br />71-137 <br />trans-l,4-Dichloro-2-butene <br />23.0 <br />20.0 <br />115 <br />42-150 <br />Trichloroethene (TCE) <br />8.42 <br />10.0 <br />84 <br />73-119 <br />Trichlorofluoromethane <br />10.5 <br />10.0 <br />105 <br />60-141 <br />Vinyl Acetate <br />23.4 <br />20.0 <br />117 <br />77-154 <br />Vinyl Chloride <br />11.4 <br />10.0 <br />114 <br />68-134 <br />Service Request: <br />Date Extracted: <br />Date Analyzed: <br />Units: <br />Basis: <br />Level: <br />Extraction Lot: <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 />29 <br />Printed: 08/03/2006 12:00:07 Form 3C - Organic <br />P:\STEALTMCRYSTAL.RPT\Form3LCS.rpt Superset Reference: RR13028 <br />L0600992 <br />08/02/2006 <br />08/02/2006 <br />ug/L <br />NA <br />Low <br />LWG0601249 <br />Page 2 of 2 <br />