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Quality Control Results <br /> Client: Shaw Environmental & Infrastructure, Inc Job Number: 720-21697-1 <br /> Lab Control Sample/ Method: 82608 <br /> Lab Control Sample Duplicate Recovery Report-Batch: 720-55224 Preparation: 5030B <br /> LCS Lab Sample ID: LCS 720-55224/2 Analysis Batch: 720-55224 Instrument ID: Chenstation 3 <br /> Client Matrix: Water Prep Batch: N/A Lab File ID: 08050914.D <br /> Dilution: 1.0 Units: ug/L Initial Weight/Volume: 10 mL <br /> Date Analyzed: 08/05/2009 1517 Final Weight/Volume: 10 mL <br /> Date Prepared: 08/05/2009 1517 <br /> LCSD Lab Sample ID:LCSD 720-55224/3 Analysis Batch: 720-55224 Instrument ID: Chenstation 3 <br /> Client Matrix: Water Prep Batch: N/A Lab File ID: 08050915.D <br /> Dilution: 1.0 Units: ug/L Initial Weight/Volume: 10 mL <br /> Date Analyzed: 08/05/2009 1550 Final Weight/Volume: 10 mL <br /> Date Prepared: 08/05/2009 1550 <br /> % Rec. <br /> Analyte LCS LCSD Limit RPD RPD Limit LCS Qual LCSD Qual <br /> 2,2-Dichloropropane 104 102 78-140 3 20 <br /> Surrogate LCS% Rec LCSD%Rec Acceptance Limits <br /> 4-Bromofluorobenzene 95 96 67- 130 <br /> 1,2-Dichloroethane-d4(Surr) 93 94 67- 130 <br /> Toluene-d8(Surr) 98 99 70- 130 <br /> Calculations are performed before rounding to avoid round-off errors in calculated results. <br /> TestAmerica San Francisco Page 45 of 63 08/17/2009 <br />