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Quality Control Results <br />Job Number: 720-1027-1Client: Kennedy/Jenks Consultants <br />Date Analyzed: <br />Date Analyzed: <br />Dilution: <br />Dilution: <br />12/31/2005 1634 <br />12/31/2005 1708 <br />Solid <br />Matrix Spike/ <br />Matrix Spike Duplicate Recovery Report - Batch: 720-3848 <br />1.0 <br />1.0 <br />MS Lab Sample ID: <br />MSD Lab Sample ID: <br />Client Matrix: <br />Date Prepared: <br />Date Prepared: <br />Instrument ID: <br />Lab File ID: <br />Initial Weight/Volume: <br />Final Weight/Volume: <br />Instrument ID: <br />Lab File ID: <br />Initial Weight/Volume: <br />Final Weight/Volume: <br />Client Matrix:Solid <br />Analysis Batch: 720-3848 <br />Analysis Batch: 720-3848 <br />12/31/2005 1634 <br />12/31/2005 1708 <br />Prep Batch: N/A <br />Prep Batch: N/A <br />c:\saturnws\data\200512\123 <br />5.02 g <br />10 mL <br />c:\saturnws\data\200512\1231 <br />5.09 g <br />10 mL <br />Method: 8260B <br />Preparation: 5030B <br />Varian 3900D <br />Varian 3900D <br />720-1174-A-12 MS <br />720-1174-A-12 MSD <br />Analyte MSD QualMS QualRPD LimitRPDLimitMSDMS <br />% Rec. <br />89 95 69 - 129 5 20Benzene <br />97 101 61 - 121 3 20Chlorobenzene <br />92 97 65 - 125 4 201,1-Dichloroethene <br />87 93 70 - 130 5 20Toluene <br />84 88 74 - 134 3 20Trichloroethene <br />Surrogate MS % Rec MSD % Rec Acceptance Limits <br />4-Bromofluorobenzene 126 127 60 - 140 <br />1,2-Dichloroethane-d4 84 86 60 - 140 <br />Toluene-d8 90 93 70 - 130 <br />STL San Francisco <br />Calculations are performed before rounding to avoid round-off errors in calculated results. <br />Page 296 of 347