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Quality Control Results <br /> Client: Environmental Cost Management, Inc. Job Number: 720-19425-1 <br /> Matrix Spike/ Method: 8260B <br /> Matrix Spike Duplicate Recovery Report- Batch: 720-49653 Preparation: 5030B <br /> MS Lab Sample ID: 720-19382-B-10 MS Analysis Batch: 720-49653 Instrument ID: Saturn 21<3 <br /> Client Matrix: Water Prep Batch: N/A Lab File ID: d:\data\200905\050409\S, <br /> Dilution: 10 Initial Weight/Volume: 40 mL <br /> Date Analyzed: 05/04/2009 1615 Final Weight/Volume: 40 mL <br /> Date Prepared: 05/04/2009 1615 <br /> MSD Lab Sample ID: 720-19382-B-10 MSD Analysis Batch: 720-49653 Instrument ID: Saturn 2K3 <br /> Client Matrix: Water Prep Batch: N/A Lab File ID: d:\data\200905\050409\SA <br /> Dilution: 10 Initial Weight/Volume: 40 mL <br /> Date Analyzed: 05/04/2009 1647 Final Weight/Volume: 40 mL <br /> Date Prepared: 05/04/2009 1647 <br /> % Rec. <br /> Analyte MS MSD Limit RPD RPD Limit MS Qual MSD Qual <br /> 1,1-Dichloroethene 71 85 70- 130 18 20 <br /> Trichloroethene 77 91 70- 130 11 20 <br /> Chlorobenzene 89 105 70- 130 16 20 <br /> Surrogate MS% Rec MSD % Rec Acceptance Limits <br /> Toluene-d8(Surr) 98 101 82- 120 <br /> 4-Bromofluorobenzene 101 103 74- 131 <br /> 1,2-Dichloroethane-d4(Surr) 80 83 72- 125 <br /> Calculations are performed before rounding to avoid round-off errors in calculated results. <br /> TestAmerica San Francisco Page 41 of 53 <br />