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Quality Control Results <br /> Client: Environmental Cost Management, Inc. Job Number: 720-19558-1 <br /> Matrix Spike/ Method: 8260B <br /> Matrix Spike Duplicate Recovery Report- Batch: 720-50035 Preparation: 5030B <br /> MS Lab Sample ID: 720-19662-A-14 MS Analysis Batch: 720-50035 Instrument ID: Varian 390OG <br /> Client Matrix: Water Prep Batch: N/A Lab File ID: e:\data\200905\051109\S, <br /> Dilution: 5.0 Initial Weight/Volume: 40 mL <br /> Date Analyzed: 05/11/2009 1317 Final Weight/Volume: 40 mL <br /> Date Prepared: 05/11/2009 1317 <br /> MSD Lab Sample ID: 720-19662-A-14 MSD Analysis Batch: 720-50035 Instrument ID: Varian 390OG <br /> Client Matrix: Water Prep Batch: N/A Lab File ID: e:\data\200905\051109\SA <br /> Dilution: 5.0 Initial Weight/Volume: 40 mL <br /> Date Analyzed: 05/11/2009 1351 Final Weight/Volume: 40 mL <br /> Date Prepared: 05/11/2009 1351 <br /> % Rec. <br /> Analyte MS MSD Limit RPD RPD Limit MS Qual MSD Qual <br /> 1,1-Dichloroethene 118 114 70- 130 2 20 <br /> 1,1-Dichloroethane 107 110 70- 130 3 20 <br /> Dichlorodifluoromethane 98 98 70- 130 0 20 <br /> Vinyl chloride 100 99 70- 130 1 20 <br /> Chloroethane 100 103 70- 130 3 20 <br /> Trichlorofluoromethane 114 115 70- 130 0 20 <br /> Methylene Chloride 103 105 70- 130 2 20 <br /> trans-1,2-Dichloroethene 109 113 70- 130 4 20 <br /> cis-1,2-Dichloroethene 112 118 70- 130 6 20 <br /> Chloroform 110 111 70- 130 1 20 <br /> 1,1,1-Trichloroethane 118 115 70- 130 2 20 <br /> Carbon tetrachloride 118 118 70- 130 0 20 <br /> 1,2-Dichloroethane 105 116 70- 130 10 20 <br /> Trichloroethene 142 99 70- 130 6 20 4 4 <br /> 1,2-Dichloropropane 117 127 70- 130 8 20 <br /> Dichlorobromomethane 105 121 70- 130 14 20 <br /> trans-1,3-Dichloropropene 100 113 70- 130 12 20 <br /> cis-1,3-Dichloropropene 105 113 70- 130 7 20 <br /> 1,1,2-Trichloroethane 110 126 70- 130 13 20 <br /> Tetrachloroethene 110 111 70- 130 0 20 <br /> Chlorodibromomethane 98 113 70- 130 14 20 <br /> Chlorobenzene 105 111 70- 130 5 20 <br /> Bromoform 0 118 70- 130 NC 20 <br /> 1,1,2,2-Tetrachloroethane 104 115 70- 130 10 20 <br /> 1,3-Dichlorobenzene 105 109 70- 130 3 20 <br /> 1,4-Dichlorobenzene 106 105 70- 130 1 20 <br /> 1,2-Dichlorobenzene 105 110 70- 130 5 20 <br /> Chloromethane 96 98 70- 130 2 20 <br /> Bromomethane 102 96 70- 130 6 20 <br /> Calculations are performed before rounding to avoid round-off errors in calculated results. <br /> TestAmerica San Francisco Page 140 of 155 <br />