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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: 720-49972 Preparation: 5030B <br /> MS Lab Sample ID: 720-19550-B-2 MS Analysis Batch: 720-49972 Instrument ID: Saturn 21<3 <br /> Client Matrix: Water Prep Batch: N/A Lab File ID: d:\data\200905\050909\S, <br /> Dilution: 1.0 Initial Weight/Volume: 40 mL <br /> Date Analyzed: 05/09/2009 1657 Final Weight/Volume: 40 mL <br /> Date Prepared: 05/09/2009 1657 <br /> MSD Lab Sample ID: 720-19550-C-2 MSD Analysis Batch: 720-49972 Instrument ID: Saturn 2K3 <br /> Client Matrix: Water Prep Batch: N/A Lab File ID: d:\data\200905\050909\SA <br /> Dilution: 1.0 Initial Weight/Volume: 40 mL <br /> Date Analyzed: 05/09/2009 1729 Final Weight/Volume: 40 mL <br /> Date Prepared: 05/09/2009 1729 <br /> % Rec. <br /> Analyte MS MSD Limit RPD RPD Limit MS Qual MSD Qual <br /> 1,1-Dichloroethene 98 102 70- 130 4 20 <br /> 1,1-Dichloroethane 99 99 70- 130 0 20 <br /> Dichlorodifluoromethane 98 100 70- 130 2 20 <br /> Vinyl chloride 99 101 70- 130 1 20 <br /> Chloroethane 174 171 70- 130 1 20 <br /> Trichlorofluoromethane 108 112 70- 130 3 20 <br /> Methylene Chloride 104 104 70- 130 0 20 <br /> trans-1,2-Dichloroethene 91 92 70- 130 2 20 <br /> cis-1,2-Dichloroethene 101 100 70- 130 0 20 <br /> Chloroform 98 98 70- 130 0 20 <br /> 1,1,1-Trichloroethane 97 98 70- 130 0 20 <br /> Carbon tetrachloride 95 94 70- 130 1 20 <br /> 1,2-Dichloroethane 93 93 70- 130 1 20 <br /> Trichloroethene 87 87 70- 130 0 20 <br /> 1,2-Dichloropropane 92 92 70- 130 0 20 <br /> Dichlorobromomethane 93 94 70- 130 1 20 <br /> trans-1,3-Dichloropropene 86 84 70- 130 2 20 <br /> cis-1,3-Dichloropropene 86 84 70- 130 1 20 <br /> 1,1,2-Trichloroethane 83 84 70- 130 1 20 <br /> Tetrachloroethene 101 98 70- 130 4 20 <br /> Chlorodibromomethane 80 81 70- 130 0 20 <br /> Chlorobenzene 109 109 70- 130 1 20 <br /> Bromoform 80 80 70- 130 0 20 <br /> 1,1,2,2-Tetrachloroethane 95 97 70- 130 2 20 <br /> 1,3-Dichlorobenzene 101 105 70- 130 4 20 <br /> 1,4-Dichlorobenzene 101 101 70- 130 0 20 <br /> 1,2-Dichlorobenzene 105 108 70- 130 3 20 <br /> Chloromethane 85 89 70- 130 4 20 <br /> Bromomethane 51 61 70- 130 17 20 <br /> Calculations are performed before rounding to avoid round-off errors in calculated results. <br /> TestAmerica San Francisco Page 116 of 155 <br />