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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: 720-49841 Preparation: 5030B <br /> MS Lab Sample ID: 720-19480-B-10 MS Analysis Batch: 720-49841 Instrument ID: Saturn 21<3 <br /> Client Matrix: Water Prep Batch: N/A Lab File ID: d:\data\200905\050609\S, <br /> Dilution: 10 Initial Weight/Volume: 40 mL <br /> Date Analyzed: 05/06/2009 2124 Final Weight/Volume: 40 mL <br /> Date Prepared: 05/06/2009 2124 <br /> MSD Lab Sample ID: 720-19480-B-10 MSD Analysis Batch: 720-49841 Instrument ID: Saturn 2K3 <br /> Client Matrix: Water Prep Batch: N/A Lab File ID: d:\data\200905\050609\SA <br /> Dilution: 10 Initial Weight/Volume: 40 mL <br /> Date Analyzed: 05/06/2009 2156 Final Weight/Volume: 40 mL <br /> Date Prepared: 05/06/2009 2156 <br /> % Rec. <br /> Analyte MS MSD Limit RPD RPD Limit MS Qual MSD Qual <br /> 1,1-Dichloroethene 96 86 70- 130 11 20 <br /> 1,1-Dichloroethane 95 91 70- 130 4 20 <br /> Dichlorodifluoromethane 65 57 70- 130 13 20 <br /> Vinyl chloride 77 74 70- 130 2 20 <br /> Chloroethane 131 152 70- 130 15 20 <br /> Trichlorofluoromethane 88 79 70- 130 10 20 <br /> Methylene Chloride 93 91 70- 130 2 20 <br /> trans-1,2-Dichloroethene 94 86 70- 130 8 20 <br /> cis-1,2-Dichloroethene 90 105 70- 130 4 20 <br /> Chloroform 96 91 70- 130 5 20 <br /> 1,1,1-Trichloroethane 97 85 70- 130 13 20 <br /> Carbon tetrachloride 94 83 70- 130 12 20 <br /> 1,2-Dichloroethane 93 93 70- 130 1 20 <br /> Trichloroethene 119 138 70- 130 3 20 4 F 4 <br /> 1,2-Dichloropropane 98 91 70- 130 8 20 <br /> Dichlorobromomethane 87 82 70- 130 6 20 <br /> trans-1,3-Dichloropropene 87 84 70- 130 4 20 <br /> cis-1,3-Dichloropropene 87 84 70- 130 4 20 <br /> 1,1,2-Trichloroethane 79 79 70- 130 1 20 <br /> Tetrachloroethene 97 84 70- 130 13 20 <br /> Chlorodibromomethane 83 78 70- 130 6 20 <br /> Chlorobenzene 106 99 70- 130 7 20 <br /> Bromoform 76 76 70- 130 1 20 <br /> 1,1,2,2-Tetrachloroethane 83 88 70- 130 6 20 <br /> 1,3-Dichlorobenzene 105 90 70- 130 15 20 <br /> 1,4-Dichlorobenzene 99 97 70- 130 1 20 <br /> 1,2-Dichlorobenzene 104 101 70- 130 3 20 <br /> Chloromethane 67 67 70- 130 0 20 <br /> Bromomethane 58 53 70- 130 8 20 <br /> Calculations are performed before rounding to avoid round-off errors in calculated results. <br /> TestAmerica San Francisco Page 92 of 155 <br />