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Quality Control Results <br /> Client: Environmental Cost Management, Inc. Job Number: 720-20074-1 <br /> Matrix Spike/ Method: 8260B <br /> Matrix Spike Duplicate Recovery Report- Batch: 720-50759 Preparation: 5030B <br /> MS Lab Sample ID: 720-19977-B-1 MS Analysis Batch: 720-50759 Instrument ID: Saturn 21<3 <br /> Client Matrix: Water Prep Batch: N/A Lab File ID: d:\data\200905\052009\S, <br /> Dilution: 2.0 Initial Weight/Volume: 40 mL <br /> Date Analyzed: 05/20/2009 2054 Final Weight/Volume: 40 mL <br /> Date Prepared: 05/20/2009 2054 <br /> MSD Lab Sample ID: 720-19977-B-1 MSD Analysis Batch: 720-50759 Instrument ID: Saturn 2K3 <br /> Client Matrix: Water Prep Batch: N/A Lab File ID: d:\data\200905\052009\SA <br /> Dilution: 2.0 Initial Weight/Volume: 40 mL <br /> Date Analyzed: 05/20/2009 2126 Final Weight/Volume: 40 mL <br /> Date Prepared: 05/20/2009 2126 <br /> % Rec. <br /> Analyte MS MSD Limit RPD RPD Limit MS Qual MSD Qual <br /> 1,1-Dichloroethene 103 96 70- 130 6 20 <br /> Trichloroethene 97 104 70- 130 5 20 <br /> Chlorobenzene 105 99 70- 130 6 20 <br /> Surrogate MS% Rec MSD % Rec Acceptance Limits <br /> Toluene-d8(Surr) 110 97 70- 130 <br /> 4-Bromofluorobenzene 100 94 67- 130 <br /> 1,2-Dichloroethane-d4(Surr) 118 112 67- 130 <br /> Calculations are performed before rounding to avoid round-off errors in calculated results. <br /> TestAmerica San Francisco Page 22 of 27 <br />