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Quality Control Results <br />Job Number: 720-1053-1Client: Kennedy/Jenks Consultants <br />Date Analyzed: <br />Date Analyzed: <br />Dilution: <br />Dilution: <br />12/26/2005 1953 <br />12/26/2005 2026 <br />Water <br />Matrix Spike/ <br />Matrix Spike Duplicate Recovery Report - Batch: 720-3576 <br />4.0 <br />4.0 <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: 720-3576 <br />Analysis Batch: 720-3576 <br />12/26/2005 1953 <br />12/26/2005 2026 <br />Prep Batch: N/A <br />Prep Batch: N/A <br />c:\saturnws\data\200512\122 <br />40 mL <br />40 mL <br />c:\saturnws\data\200512\1226 <br />40 mL <br />40 mL <br />Method: 8260B <br />Preparation: 5030B <br />Varian 3900G <br />Varian 3900G <br />720-1104-A-2 MS <br />720-1104-A-2 MSD <br />Analyte MSD QualMS QualRPD LimitRPDLimitMSDMS <br />% Rec. <br />97 99 69 - 129 3 20Benzene <br />101 103 61 - 121 2 20Chlorobenzene <br />102 103 65 - 125 2 201,1-Dichloroethene <br />94 97 70 - 130 4 20Toluene <br />93 96 74 - 134 3 20Trichloroethene <br />Surrogate MS % Rec MSD % Rec Acceptance Limits <br />4-Bromofluorobenzene 100 102 79 - 118 <br />1,2-Dichloroethane-d4 92 93 78 - 117 <br />Toluene-d8 95 95 77 - 121 <br />STL San Francisco <br />Calculations are performed before rounding to avoid round-off errors in calculated results. <br />Page 13 of 20