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Quality Control Results <br />Job Number: 720-898-1Client: Kennedy/Jenks Consultants <br />Date Analyzed: <br />Date Analyzed: <br />Dilution: <br />Dilution: <br />12/22/2005 0936 <br />12/22/2005 1009 <br />Laboratory Control/ <br />Laboratory Control Duplicate Recovery Report - Batch: 720-3447 <br />200 <br />200 <br />Solid <br />LCS Lab Sample ID: <br />LCSD Lab Sample ID: <br />Client Matrix: <br />Date Prepared: <br />Units: <br />Instrument ID: <br />Lab File ID: <br />Initial Weight/Volume: <br />Final Weight/Volume: <br />Client Matrix:Solid <br />Date Prepared: <br />Units: <br />Instrument ID: <br />Lab File ID: <br />Initial Weight/Volume: <br />Final Weight/Volume: <br />ug/Kg <br />12/22/2005 0801 <br />Prep Batch: 720-3447 <br />Analysis Batch: 720-3475 <br />c:\saturnws\data\200512\122205 <br />5 g <br />10 mL <br />c:\saturnws\data\200512\122205\ <br />5 g <br />10 mL <br />ug/Kg <br />12/22/2005 0801 <br />Analysis Batch: 720-3475 <br />Prep Batch: 720-3447 <br />Method: 8260B <br />Preparation: 5030B <br />Varian 3900F <br />Varian 3900F <br />LCS 720-3447/1-A <br />LCSD 720-3447/2-A <br />Analyte LCSD QualLCS QualRPD LimitRPDLimitLCSDLCS <br />% Rec. <br />9992 69 - 129 7 20Benzene <br />10396 61 - 121 7 20Chlorobenzene <br />111101 65 - 125 10 201,1-Dichloroethene <br />9394 70 - 130 0 20Toluene <br />10096 74 - 134 4 20Trichloroethene <br />Surrogate LCS % Rec LCSD % Rec Acceptance Limits <br />4-Bromofluorobenzene 110 116 60 - 140 <br />1,2-Dichloroethane-d4 79 84 60 - 140 <br />Toluene-d8 86 84 70 - 130 <br />STL San Francisco <br />Calculations are performed before rounding to avoid round-off errors in calculated results. <br />Page 32 of 39