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COLUMBIA ANALYTICAL SERVICES,INC. <br /> Analytical Report <br /> Client: EMCON Associates Service Request: S941528 <br /> Project: Foothill Landfill/0939-004.08 Date Collected: 11/28/94 <br /> Sample Matrix: Water Date Received: 11/30/94 <br /> Date Extracted: NA <br /> Volatile Organic Compounds <br /> EPA Method 8260 <br /> Units:ug/L(ppb) <br /> Sample Name: Method Blank <br /> Lab Code: S941207-WB <br /> Date Analyzed: 12/7/94 <br /> Analyte PQL MDL <br /> Dichlorodifluoromethane(Freon 12) 0.5 0.49 ND <br /> Chloromethane 0.5 0.43 ND <br /> Vinyl Chloride 0.5 0.38 ND <br /> Bromomethane 0.5 0.47 ND <br /> Chloroethane 0.5 0.50 ND <br /> Trichlorofluoromethane(Freon 11) 0.5 0.34 ND <br /> Acrolein 5 3.4 ND <br /> Acetone 5 4.4 ND <br /> 1,1-Dichloroethene 0.5 0.40 ND <br /> Iodomethane 0.5 0.38 ND <br /> Carbon Disulfide 0.5 0.39 ND <br /> Methylene Chloride 1 0.47 ND <br /> Acrylonitrile 5 3.9 ND <br /> trans-1,2-Dichloroethene 0.5 0.41 ND <br /> 1,1-Dichloroethane 0.5 0.28 ND <br /> 2-Butanone(MEK) 5 3.9 ND <br /> 2,2-Dichloropropane 0.5 0.43 ND <br /> cis-1,2-Dichloroethene 0.5 0.50 ND <br /> Chloroform 0.5 0.31 ND <br /> Bromochloromethane 0.5 0.41 ND <br /> 1,1,1-Trichloroethane(TCA) 0.5 0.31 ND <br /> 1,1-Dichloropropene 0.5 0.47 ND <br /> Carbon Tetrachloride 0.5 0.34 ND <br /> 1,2-Dichloroethane 0.5 0.46 ND <br /> Benzene 0.5 0.36 ND <br /> Trichloroethene(TCE) 0.5 0.43 ND <br /> 1,2-Dichloropropane 0.5 0.31 ND <br /> Bromodichloromethane 0.5 0.35 ND <br /> Dibromomethane 0.5 0.28 ND <br /> 2-Hexanone 5 0.30 ND <br /> cis-1,3-Dicholoropropene 0.5 0.41 ND <br /> Toluene 0.5 0.35 ND <br /> trans-l,3-Dichloropropene 0.5 0.49 ND <br /> 1,1,2-Trichloroethane 0.5 0.26 ND <br /> 4-Methyl-2-pentanone(MIBK) 2 3.5 ND <br /> Approved By: Date: L2-1' �S <br /> Page 5 <br /> 1921 Rinowood Avenue • Son Jose California 95131 • Telephone 408/417-2400 • Fox 408/417-9356 <br />