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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: 720-48862 Preparation: 5030B <br /> MS Lab Sample ID: 720-19040-11 Analysis Batch: 720-48862 Instrument ID: Varian 390OF <br /> Client Matrix: Water Prep Batch: N/A Lab File ID: e:\200904\042009\SA-W/ <br /> Dilution: 1.0 Initial Weight/Volume: 40 mL <br /> Date Analyzed: 04/20/2009 1401 Final Weight/Volume: 40 mL <br /> Date Prepared: 04/20/2009 1401 <br /> MSD Lab Sample ID: 720-19040-11 Analysis Batch: 720-48862 Instrument ID: Varian 390OF <br /> Client Matrix: Water Prep Batch: N/A Lab File ID: e:\200904\042009\SA-WA <br /> Dilution: 1.0 Initial Weight/Volume: 40 mL <br /> Date Analyzed: 04/20/2009 1434 Final Weight/Volume: 40 mL <br /> Date Prepared: 04/20/2009 1434 <br /> % Rec. <br /> Analyte MS MSD Limit RPD RPD Limit MS Qual MSD Qual <br /> 1,1-Dichloroethene 100 99 70- 130 1 20 <br /> Trichloroethene 103 102 70- 130 1 20 <br /> Chlorobenzene 108 112 70- 130 4 20 <br /> Surrogate MS% Rec MSD % Rec Acceptance Limits <br /> Toluene-d8(Surr) 89 90 82- 120 <br /> 4-Bromofluorobenzene 87 89 74- 131 <br /> 1,2-Dichloroethane-d4(Surr) 86 87 72- 125 <br /> Calculations are performed before rounding to avoid round-off errors in calculated results. <br /> TestAmerica San Francisco Page 52 of 69 <br />