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Quality Control Results <br /> Client: Environmental Cost Management, Inc. Job Number: 720-19040-1 <br /> Matrix Spike/ Method: 8260B <br /> Matrix Spike Duplicate Recovery Report- Batch: 720-48933 Preparation: 5030B <br /> MS Lab Sample ID: 720-19040-33 Analysis Batch: 720-48933 Instrument ID: Saturn 21<3 <br /> Client Matrix: Water Prep Batch: N/A Lab File ID: d:\data\200904\042109\S, <br /> Dilution: 1.0 Initial Weight/Volume: 40 mL <br /> Date Analyzed: 04/21/2009 1624 Final Weight/Volume: 40 mL <br /> Date Prepared: 04/21/2009 1624 <br /> MSD Lab Sample ID: 720-19040-33 Analysis Batch: 720-48933 Instrument ID: Saturn 2K3 <br /> Client Matrix: Water Prep Batch: N/A Lab File ID: d:\data\200904\042109\SA <br /> Dilution: 1.0 Initial Weight/Volume: 40 mL <br /> Date Analyzed: 04/21/2009 1656 Final Weight/Volume: 40 mL <br /> Date Prepared: 04/21/2009 1656 <br /> % Rec. <br /> Analyte MS MSD Limit RPD RPD Limit MS Qual MSD Qual <br /> 1,1-Dichloroethene 107 106 70- 130 1 20 <br /> Trichloroethene 98 94 70- 130 4 20 <br /> Chlorobenzene 112 119 70- 130 6 20 <br /> Surrogate MS% Rec MSD % Rec Acceptance Limits <br /> Toluene-d8(Surr) 82 80 X 82- 120 <br /> 4-Bromofluorobenzene 83 88 74- 131 <br /> 1,2-Dichloroethane-d4(Surr) 82 83 72- 125 <br /> Calculations are performed before rounding to avoid round-off errors in calculated results. <br /> TestAmerica San Francisco Page 61 of 69 <br />