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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: 720-49961 Preparation: 5030B <br /> MS Lab Sample ID: 720-19545-B-4 MS Analysis Batch: 720-49961 Instrument ID: Saturn 21<3 <br /> Client Matrix: Water Prep Batch: N/A Lab File ID: d:\data\200905\050809\S, <br /> Dilution: 100 Initial Weight/Volume: 40 mL <br /> Date Analyzed: 05/08/2009 1150 Final Weight/Volume: 40 mL <br /> Date Prepared: 05/08/2009 1150 <br /> MSD Lab Sample ID: 720-19545-B-4 MSD Analysis Batch: 720-49961 Instrument ID: Saturn 2K3 <br /> Client Matrix: Water Prep Batch: N/A Lab File ID: d:\data\200905\050809\SA <br /> Dilution: 100 Initial Weight/Volume: 40 mL <br /> Date Analyzed: 05/08/2009 1222 Final Weight/Volume: 40 mL <br /> Date Prepared: 05/08/2009 1222 <br /> % Rec. <br /> Analyte MS MSD Limit RPD RPD Limit MS Qual MSD Qual <br /> 1,1-Dichloroethene 78 76 70- 130 3 20 <br /> 1,1-Dichloroethane 83 81 70- 130 2 20 <br /> Dichlorodifluoromethane 59 57 70- 130 4 20 <br /> Vinyl chloride 81 82 70- 130 0 20 <br /> Chloroethane 93 137 70- 130 38 20 <br /> Trichlorofluoromethane 72 70 70- 130 3 20 <br /> Methylene Chloride 82 83 70- 130 1 20 <br /> trans-1,2-Dichloroethene 78 78 70- 130 0 20 <br /> cis-1,2-Dichloroethene 110 107 70- 130 1 20 4 4 <br /> Chloroform 83 81 70- 130 2 20 <br /> 1,1,1-Trichloroethane 79 78 70- 130 1 20 <br /> Carbon tetrachloride 76 75 70- 130 2 20 <br /> 1,2-Dichloroethane 87 89 70- 130 2 20 <br /> Trichloroethene 106 111 70- 130 1 20 4 4 <br /> 1,2-Dichloropropane 86 80 70- 130 7 20 <br /> Dichlorobromomethane 75 76 70- 130 1 20 <br /> trans-1,3-Dichloropropene 76 77 70- 130 2 20 <br /> cis-1,3-Dichloropropene 76 77 70- 130 1 20 <br /> 1,1,2-Trichloroethane 74 72 70- 130 3 20 <br /> Tetrachloroethene 85 80 70- 130 6 20 <br /> Chlorodibromomethane 80 76 70- 130 6 20 <br /> Chlorobenzene 94 93 70- 130 1 20 <br /> Bromoform 79 71 70- 130 11 20 <br /> 1,1,2,2-Tetrachloroethane 99 87 70- 130 13 20 <br /> 1,3-Dichlorobenzene 96 87 70- 130 11 20 <br /> 1,4-Dichlorobenzene 95 94 70- 130 1 20 <br /> 1,2-Dichlorobenzene 98 92 70- 130 7 20 <br /> Chloromethane 64 64 70- 130 0 20 <br /> Bromomethane 43 56 70- 130 25 20 <br /> Calculations are performed before rounding to avoid round-off errors in calculated results. <br /> TestAmerica San Francisco Page 111 of 155 <br />