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Quality Control Results <br /> Client: Shaw Environmental & Infrastructure, Inc Job Number: 720-21697-1 <br /> Lab Control Sample/ Method: 8260B <br /> Lab Control Sample Duplicate Recovery Report-Batch: 720-55354 Preparation: 5030B <br /> LCS Lab Sample ID:LCS 720-55354/2-A Analysis Batch: 720-55355 Instrument ID: Chenstation 3 <br /> Client Matrix: Solid Prep Batch: 720-55354 Lab File ID: 08060904.D <br /> Dilution: 1.0 Units: ug/Kg Initial Weight/Volume: 5 g <br /> Date Analyzed: 08/06/2009 1107 Final Weight/Volume: 10 mL <br /> Date Prepared: 08/06/2009 0718 <br /> LCSD Lab Sample ID:LCSD 720-55354/3-A Analysis Batch: 720-55355 Instrument ID: Chenstation 3 <br /> Client Matrix: Solid Prep Batch: 720-55354 Lab File ID: 08060905.D <br /> Dilution: 1.0 Units: ug/Kg Initial Weight/Volume: 5 g <br /> Date Analyzed: 08/06/2009 1139 Final Weight/Volume: 10 mL <br /> Date Prepared: 08/06/2009 0718 <br /> % Rec. <br /> Analyte LCS LCSD Limit RPD RPD Limit LCS Qual LCSD Qual <br /> 2,2-Dichloropropane 106 102 63-130 4 20 <br /> Surrogate LCS% Rec LCSD% Rec Acceptance Limits <br /> 4-Bromofluorobenzene 98 96 52-130 <br /> 1,2-Dichloroethane-d4(Surr) 99 95 67- 130 <br /> Toluene-d8(Surr) 99 98 58- 130 <br /> Calculations are performed before rounding to avoid round-off errors in calculated results. <br /> TestAmerica San Francisco Page 53 of 63 08/17/2009 <br />