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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: 720-49897 Preparation: 5030B <br /> MS Lab Sample ID: 720-19558-21 Analysis Batch: 720-49897 Instrument ID: Saturn 21<3 <br /> Client Matrix: Water Prep Batch: N/A Lab File ID: d:\data\200905\050709\S, <br /> Dilution: 1.0 Initial Weight/Volume: 40 mL <br /> Date Analyzed: 05/07/2009 1750 Final Weight/Volume: 40 mL <br /> Date Prepared: 05/07/2009 1750 <br /> MSD Lab Sample ID: 720-19558-21 Analysis Batch: 720-49897 Instrument ID: Saturn 2K3 <br /> Client Matrix: Water Prep Batch: N/A Lab File ID: d:\data\200905\050709\SA <br /> Dilution: 1.0 Initial Weight/Volume: 40 mL <br /> Date Analyzed: 05/07/2009 1822 Final Weight/Volume: 40 mL <br /> Date Prepared: 05/07/2009 1822 <br /> % Rec. <br /> Analyte MS MSD Limit RPD RPD Limit MS Qual MSD Qual <br /> 1,1-Dichloroethene 101 103 70- 130 2 20 <br /> 1,1-Dichloroethane 103 103 70- 130 0 20 <br /> Dichlorodifluoromethane 69 75 70- 130 8 20 <br /> Vinyl chloride 89 91 70- 130 1 20 <br /> Chloroethane 171 171 70- 130 0 20 <br /> Trichlorofluoromethane 90 94 70- 130 5 20 <br /> Methylene Chloride 101 103 70- 130 3 20 <br /> trans-1,2-Dichloroethene 97 100 70- 130 3 20 <br /> cis-1,2-Dichloroethene 91 96 70- 130 2 20 <br /> Chloroform 101 101 70- 130 0 20 <br /> 1,1,1-Trichloroethane 102 104 70- 130 2 20 <br /> Carbon tetrachloride 97 99 70- 130 2 20 <br /> 1,2-Dichloroethane 100 97 70- 130 3 20 <br /> Trichloroethene 96 97 70- 130 0 20 <br /> 1,2-Dichloropropane 98 94 70- 130 4 20 <br /> Dichlorobromomethane 92 94 70- 130 1 20 <br /> trans-1,3-Dichloropropene 91 93 70- 130 2 20 <br /> cis-1,3-Dichloropropene 91 93 70- 130 2 20 <br /> 1,1,2-Trichloroethane 85 85 70- 130 0 20 <br /> Tetrachloroethene 102 109 70- 130 7 20 <br /> Chlorodibromomethane 87 88 70- 130 1 20 <br /> Chlorobenzene 112 112 70- 130 0 20 <br /> Bromoform 81 86 70- 130 5 20 <br /> 1,1,2,2-Tetrachloroethane 95 97 70- 130 2 20 <br /> 1,3-Dichlorobenzene 103 107 70- 130 4 20 <br /> 1,4-Dichlorobenzene 110 110 70- 130 0 20 <br /> 1,2-Dichlorobenzene 106 113 70- 130 7 20 <br /> Chloromethane 77 83 70- 130 7 20 <br /> Bromomethane 45 51 70- 130 11 20 <br /> Calculations are performed before rounding to avoid round-off errors in calculated results. <br /> TestAmerica San Francisco Page 101 of 155 <br />