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Quality Control Results <br /> Client: Environmental Cost Management, Inc. Job Number: 720-20910-1 <br /> Lab Control Sample/ Method: 8260B <br /> Lab Control Sample Duplicate Recovery Report-Batch: 720-53444 Preparation: 5030B <br /> LCS Lab Sample ID: LCS 720-53444/3 Analysis Batch: 720-53444 Instrument ID: Saturn 2K3 <br /> Client Matrix: Water Prep Batch: N/A Lab File ID: d:\data\200907\070609\LS-Wj <br /> Dilution: 1.0 Units: ug/L Initial Weight/Volume: 40 mL <br /> Date Analyzed: 07/06/2009 1314 Final Weight/Volume: 40 mL <br /> Date Prepared: 07/06/2009 1314 <br /> LCSD Lab Sample ID: LCSD 720-53444/2 Analysis Batch: 720-53444 Instrument ID: Saturn 2K3 <br /> Client Matrix: Water Prep Batch: N/A Lab File ID: d:\data\200907\070609\LD-WA <br /> Dilution: 1.0 Units: ug/L Initial Weight/Volume: 40 mL <br /> Date Analyzed: 07/06/2009 1345 Final Weight/Volume: 40 mL <br /> Date Prepared: 07/06/2009 1345 <br /> %Rec. <br /> Analyte LCS LCSD Limit RPD RPD Limit LCS Qual LCSD Qual <br /> Surrogate LCS%Rec LCSD%Rec Acceptance Limits <br /> Toluene-d8(Surr) 103 103 70-130 <br /> 4-Bromofluorobenzene 101 99 67-130 <br /> 1,2-Dichloroethane-d4(Surr) 92 94 67-130 <br /> Calculations are performed before rounding to avoid round-off errors in calculated results. <br /> TestAmerica San Francisco Page 21 of 25 <br />