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Quality Control Results <br /> Client: Environmental Cost Management, Inc. Job Number: 720-20910-1 <br /> Matrix Spike/ Method: 8260B <br /> Matrix Spike Duplicate Recovery Report-Batch: 720-53420 Preparation: 5030B <br /> MS Lab Sample ID: 720-20910-A-4 MS Analysis Batch: 720-53420 Instrument ID: Saturn 2K3 <br /> Client Matrix: Water Prep Batch: N/A Lab File ID: d:\data\200907\070309\SAA <br /> Dilution: 4.0 Initial Weight/Volume: 40 mL <br /> Date Analyzed: 07/03/2009 1317 Final Weight/Volume: 40 mL <br /> Date Prepared: 07/03/2009 1317 <br /> MSD Lab Sample ID: 720-20910-A-4 MSD Analysis Batch: 720-53420 Instrument ID: Saturn 2K3 <br /> Client Matrix: Water Prep Batch: N/A Lab File ID: d:\data\200907\070309\SA-W, <br /> Dilution: 4.0 Initial Weight/Volume: 40 mL <br /> Date Analyzed: 07/03/2009 1349 Final Weight/Volume: 40 mL <br /> Date Prepared: 07/03/2009 1349 <br /> %Rec. <br /> Analyte MS MSD Limit RPD RPD Limit MS Qual MSD Qual <br /> 1,1,2-Trichloro-1,2,2-trifluoroethane 109 107 60-140 1 20 <br /> EDB 93 97 60-140 5 20 <br /> 1,2,4-Trichlorobenzene 93 89 60-140 4 20 <br /> Surrogate MS%Rec MSD%Rec Acceptance Limits <br /> Toluene-d8(Surr) 104 105 70-130 <br /> 4-Bromofluoro benzene 103 102 67-130 <br /> 1,2-Dichloroethane-d4(Surr) 94 96 67-130 <br /> Calculations are performed before rounding to avoid round-off errors in calculated results. <br /> TestAmerica San Francisco Page 18 of 25 <br />