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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: 720-49569 Preparation: 5030B <br /> MS Lab Sample ID: 720-19425-5 Analysis Batch: 720-49569 Instrument ID: Varian 390OG <br /> Client Matrix: Water Prep Batch: N/A Lab File ID: e:\data\200905\050309\S, <br /> Dilution: 1.0 Initial Weight/Volume: 40 mL <br /> Date Analyzed: 05/03/2009 1339 Final Weight/Volume: 40 mL <br /> Date Prepared: 05/03/2009 1339 <br /> MSD Lab Sample ID: 720-19425-5 Analysis Batch: 720-49569 Instrument ID: Varian 390OG <br /> Client Matrix: Water Prep Batch: N/A Lab File ID: e:\data\200905\050309\SA <br /> Dilution: 1.0 Initial Weight/Volume: 40 mL <br /> Date Analyzed: 05/03/2009 1412 Final Weight/Volume: 40 mL <br /> Date Prepared: 05/03/2009 1412 <br /> % Rec. <br /> Analyte MS MSD Limit RPD RPD Limit MS Qual MSD Qual <br /> 1,1-Dichloroethene 87 95 70- 130 9 20 <br /> Trichloroethene 96 85 70- 130 11 20 <br /> Chlorobenzene 99 101 70- 130 3 20 <br /> Surrogate MS% Rec MSD % Rec Acceptance Limits <br /> Toluene-d8(Surr) 97 87 82- 120 <br /> 4-Bromofluorobenzene 86 86 74- 131 <br /> 1,2-Dichloroethane-d4(Surr) 88 85 72- 125 <br /> Calculations are performed before rounding to avoid round-off errors in calculated results. <br /> TestAmerica San Francisco Page 38 of 53 <br />