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09/07/04 13:29 <br /> ENSR-Sacramento Project: Former Unocal 5098,5606 Pacific Ave.Stockton,CA <br /> 10411 Old Placerville Rd. Suite 210 Project Number: 06940-293-100 CLS Work Order#:CNH0981 <br /> Sacramento,CA 95827-2308 Project Manager: Ben I.Heningburg COC#:41207 <br /> DRAFT: Volatile Organic Compounds by EPA Method 8260B-Quality Control <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %nREC Limits RPD Limit Notes <br /> Batch CN06839-EPA 5030 Water MS <br /> Blank(CN06839-BLKI) Prepared&Analyzed:09/03/04 <br /> Isopropylbemsene ND 0.50 Pg/L <br /> p-Isopropyltoluene ND 0.50 <br /> Methylene chloride ND 0.50 <br /> 4-Methyl-2-pentanone ND 10 <br /> Methyl tert-butyl ether ND 0.50 <br /> Naphthalene ND 0.50 <br /> n-Propylbenzene ND 0.50 <br /> Styrene ND 0.50 <br /> 1,1,1,2-Tetmchlomethme ND 0.50 <br /> 1,1,2,2-Tetrachloroethane ND 0.50 <br /> Tetmchloroethene ND 0.50 <br /> Toluene ND 0.50 <br /> 1,2,3-Trichlorobenzene ND 0.50 <br /> 1,2,4-Trichlorobenzene ND 0.50 <br /> 1,1,1-Trichloroethane ND 0.50 <br /> 1,1,2-Trichloroethane ND 0.50 <br /> Trichloroethene ND 0.50 <br /> Trichlorofluoromethane ND 0.50 " <br /> 1,2,3-Trichloropropane ND 0.50 " <br /> 1,2,4-Trimethylbenzene ND 0.50 <br /> 1,3,5-Trimethylbenzene ND 0.50 " <br /> Vinyl chloride ND 1.0 " <br /> Xylenes(total) ND 1.0 <br /> Surrogate:1,2-Dichloroethaned4 13.6 10.0 136 66-135 S-GC <br /> Surrogate:Toluene-d8 9.42 10.0 94.2 72-115 <br /> Surrogate:4-BromoJluorobemene 10.8 10.0 108 73-125 <br /> LCS(CN06839-BSI) __ Prepared&Analyzed:09/03104 <br /> Benzene 17.3 0.50 pg/L 20.0 86.5 60-135 <br /> Chlorobehzene 17.4 0.50 20.0 87.0 60-133 <br /> 1,1-Dichloroethene 23.6 0.50 20.0 118 42-150 <br /> Toluene 18.3 0.50 20.0 91.5 60-137 <br /> Trichloroethene 17.9 0.50 20.0 89.5 62-140 <br /> Surrogate:1,2-Dichloroethaned4 11.7 10.0 117 66-135 <br /> Surrogate:Toluened8 10.1 10.0 101 72-125 <br /> Surrogate:4-BromoJluorobemene 9.87 10.0 98.7 73-115 <br /> CA DOHS ELAP Accreditation/Registration Number 1233 <br />