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Quality Control Results <br /> Client: Environmental Cost Management, Inc. Job Number: 720-18553-1 <br /> Method Blank- Batch: 720-47926 Method: 8260B <br /> Preparation: 5030B <br /> Lab Sample ID: MB 720-47926/3 Analysis Batch: 720-47926 Instrument ID: Varian 390OF <br /> Client Matrix: Water Prep Batch: N/A Lab File ID: e:\200903\032309\MB-WA <br /> Dilution: 1.0 Units: ug/L Initial Weight/Volume: 40 mL <br /> Date Analyzed: 03/23/2009 0924 Final Weight/Volume: 40 mL <br /> Date Prepared: 03/23/2009 0924 <br /> Analyte Result Qual RL <br /> 1,1-Dichloroethene ND 0.50 <br /> 1,1-Dichloroethane ND 0.50 <br /> Dichlorodifluoromethane ND 0.50 <br /> Vinyl chloride ND 0.50 <br /> Chloroethane ND 1.0 <br /> Trichlorofluoromethane ND 1.0 <br /> Methylene Chloride ND 5.0 <br /> trans-1,2-Dichloroethene ND 0.50 <br /> cis-1,2-Dichloroethene ND 0.50 <br /> Chloroform ND 1.0 <br /> 1,1,1-Trichloroethane ND 0.50 <br /> Carbon tetrachloride ND 0.50 <br /> 1,2-Dichloroethane ND 0.50 <br /> Trichloroethene ND 0.50 <br /> 1,2-Dichloropropane ND 0.50 <br /> Dichlorobromomethane ND 0.50 <br /> trans-1,3-Dichloropropene ND 0.50 <br /> cis-1,3-Dichloropropene ND 0.50 <br /> 1,1,2-Trichloroethane ND 0.50 <br /> Tetrachloroethene ND 0.50 <br /> Chlorodibromomethane ND 0.50 <br /> Chlorobenzene ND 0.50 <br /> Bromoform ND 1.0 <br /> 1,1,2,2-Tetrachloroethane ND 0.50 <br /> 1,3-Dichlorobenzene ND 0.50 <br /> 1,4-Dichlorobenzene ND 0.50 <br /> 1,2-Dichlorobenzene ND 0.50 <br /> Chloromethane ND 1.0 <br /> Bromomethane ND 1.0 <br /> 1,1,2-Trichloro-1,2,2-trifluoroethane ND 0.50 <br /> EDB ND 0.50 <br /> 1,2,4-Trichlorobenzene ND 1.0 <br /> Surrogate % Rec Acceptance Limits <br /> Toluene-d8(Surr) 108 82- 120 <br /> 4-Bromofluorobenzene 105 74- 131 <br /> 1,2-Dichloroethane-d4(Surr) 102 76- 132 <br /> Calculations are performed before rounding to avoid round-off errors in calculated results. <br /> TestAmerica San Francisco Page 11 of 15 <br />