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Quality Control Results <br /> Client: SECOR International, Inc. Job Number: 720-7408-1 <br /> Lab Control Spike/ Method: 8260B <br /> Lab Control Spike Duplicate Recovery Report-Batch: 720-17650 Preparation: 5030B <br /> LCS Lab Sample ID: LCS 720-17650/2 Analysis Batch: 720-17650 Instrument ID: Varian 3900C <br /> Client Matrix: Water Prep Batch: N/A Lab File ID: c:\saturnws\data\200701\0' <br /> Dilution: 1.0 Units: ug/L Initial Weight/Volume: 40 mL <br /> Date Analyzed: 01/26/2007 1324 Final WeighWolume: 40 mL <br /> Date Prepared: 01/26/2007 1324 <br /> LCSD Lab Sample ID:LCSD 720-17650/1 Analysis Batch: 720-17650 Instrument ID: Varian 3900C <br /> Client Matrix: Water Prep Batch: N/A Lab File ID: c:\saturnws\data\200701\01'. <br /> Dilution: 1.0 Units: ug/L Initial Weight/Volume: 40 mL <br /> Date Analyzed: 01/26/2007 1350 Final Weight/Volume: 40 mL <br /> Date Prepared: 01/26/2007 1350 <br /> % Rec. <br /> Analyte LCS LCSD Limit RPD RPD Limit LCS Qual LCSD Qual <br /> Benzene 114 119 69- 129 4 25 <br /> MTBE 123 119 65- 165 3 25 <br /> Toluene 103 106 70- 130 3 25 <br /> Surrogate LCS%Rec LCSD%Rec Acceptance Limits <br /> Toluene-d8(Surr) 110 110 77- 121 <br /> 1,2-Dichloroethane-d4(Surr) 115 115 73- 130 <br /> Calculations are performed before rounding to avoid round-off errors in calculated results. <br /> STL San Francisco Page 49 of 63 <br />