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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 /> 1,1,2-Trichloro-1,2,2-trifluoroethane 109 82 70- 130 28 20 <br /> EDB 82 81 70- 130 1 20 <br /> 1,2,4-Trichlorobenzene 113 103 70- 130 9 20 <br /> Surrogate MS% Rec MSD % Rec Acceptance Limits <br /> Toluene-d8(Surr) 105 99 82- 120 <br /> 4-Bromofluorobenzene 103 91 74- 131 <br /> 1,2-Dichloroethane-d4(Surr) 88 83 72- 125 <br /> Calculations are performed before rounding to avoid round-off errors in calculated results. <br /> TestAmerica San Francisco Page 93 of 155 <br />