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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: 720-53444 Preparation: 5030B <br /> MS Lab Sample ID: 720-21058-A-6 MS Analysis Batch: 720-53444 Instrument ID: Saturn 2K3 <br /> Client Matrix: Water Prep Batch: N/A Lab File ID: d:\data\200907\070609\SAA <br /> Dilution: 20 Initial Weight/Volume: 40 mL <br /> Date Analyzed: 07/06/2009 1958 Final Weight/Volume: 40 mL <br /> Date Prepared: 07/06/2009 1958 <br /> MSD Lab Sample ID: 720-21058-A-6 MSD Analysis Batch: 720-53444 Instrument ID: Saturn 2K3 <br /> Client Matrix: Water Prep Batch: N/A Lab File ID: d:\data\200907\070609\SA-W, <br /> Dilution: 20 Initial Weight/Volume: 40 mL <br /> Date Analyzed: 07/06/2009 2032 Final Weight/Volume: 40 mL <br /> Date Prepared: 07/06/2009 2032 <br /> %Rec. <br /> Analyte MS MSD Limit RPD RPD Limit MS Qual MSD Qual <br /> 1,1,2-Trichloro-1,2,2-trifluoroethane 108 110 60-140 3 20 <br /> EDB 97 97 60-140 1 20 <br /> 1,2,4-Trichlorobenzene 82 94 60-140 13 20 <br /> Surrogate MS%Rec MSD%Rec Acceptance Limits <br /> Toluene-d8(Surr) 102 91 70-130 <br /> 4-Bromofluoro benzene 97 91 67-130 <br /> 1,2-Dichloroethane-d4(Surr) 92 89 67-130 <br /> Calculations are performed before rounding to avoid round-off errors in calculated results. <br /> TestAmerica San Francisco Page 23 of 25 <br />