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Quality Control Results <br />Job Number: 720-993-1Client: Kennedy/Jenks Consultants <br />Date Analyzed: <br />Date Analyzed: <br />Dilution: <br />Dilution: <br />12/26/2005 1743 <br />12/26/2005 1817 <br />Water <br />Matrix Spike/ <br />Matrix Spike Duplicate Recovery Report - Batch: 720-3587 <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:Water <br />Analysis Batch: 720-3587 <br />Analysis Batch: 720-3587 <br />12/26/2005 1743 <br />12/26/2005 1817 <br />Prep Batch: N/A <br />Prep Batch: N/A <br />d:\data\200512\122605\720-9 <br />40 mL <br />40 mL <br />d:\data\200512\122605\720-99 <br />40 mL <br />40 mL <br />Method: 8260B <br />Preparation: 5030B <br />Saturn 2K3 <br />Saturn 2K3 <br />720-993-11 <br />720-993-11 <br />Analyte MSD QualMS QualRPD LimitRPDLimitMSDMS <br />% Rec. <br />92 94 69 - 129 2 20Benzene <br />97 100 61 - 121 3 20Chlorobenzene <br />94 98 65 - 125 4 201,1-Dichloroethene <br />91 94 70 - 130 3 20Toluene <br />88 89 74 - 134 1 20Trichloroethene <br />Surrogate MS % Rec MSD % Rec Acceptance Limits <br />4-Bromofluorobenzene 101 100 79 - 118 <br />1,2-Dichloroethane-d4 90 98 78 - 117 <br />Toluene-d8 94 95 77 - 121 <br />STL San Francisco <br />Calculations are performed before rounding to avoid round-off errors in calculated results. <br />Page 104 of 141