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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: 720-48883 Preparation: 5030B <br /> MS Lab Sample ID: 720-19083-B-1 MS Analysis Batch: 720-48883 Instrument ID: Varian 390OG <br /> Client Matrix: Water Prep Batch: N/A Lab File ID: e:\data\200904\042009\s� <br /> Dilution: 4.0 Initial Weight/Volume: 40 mL <br /> Date Analyzed: 04/20/2009 1013 Final Weight/Volume: 40 mL <br /> Date Prepared: 04/20/2009 1013 <br /> MSD Lab Sample ID: 720-19083-B-1 MSD Analysis Batch: 720-48883 Instrument ID: Varian 390OG <br /> Client Matrix: Water Prep Batch: N/A Lab File ID: e:\data\200904\042009\SA <br /> Dilution: 4.0 Initial Weight/Volume: 40 mL <br /> Date Analyzed: 04/20/2009 1047 Final Weight/Volume: 40 mL <br /> Date Prepared: 04/20/2009 1047 <br /> % Rec. <br /> Analyte MS MSD Limit RPD RPD Limit MS Qual MSD Qual <br /> 1,1-Dichloroethene 102 105 70- 130 2 20 <br /> Trichloroethene 198 151 70- 130 8 20 4 4 <br /> Chlorobenzene 112 108 70- 130 4 20 <br /> Surrogate MS% Rec MSD % Rec Acceptance Limits <br /> Toluene-d8(Surr) 101 99 82- 120 <br /> 4-Bromofluorobenzene 92 86 74- 131 <br /> 1,2-Dichloroethane-d4(Surr) 107 113 72- 125 <br /> Calculations are performed before rounding to avoid round-off errors in calculated results. <br /> TestAmerica San Francisco Page 58 of 69 <br />