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Quality Control Results <br /> Client: Geomatrix Consultants Inc. Job Number: 720-9514-1 <br /> Method Blank- Batch: 720-22902 Method: 7471A <br /> Preparation: 7471A <br /> Lab Sample ID: MB 720-22902/1-A Analysis Batch: 720-22909 Instrument ID: FIMS 100 <br /> Client Matrix: Solid Prep Batch: 720-22902 Lab File ID: N/A <br /> Dilution: 1.0 Units: mg/Kg Initial Weight/Volume: 1 g <br /> Date Analyzed: 06/21/2007 1129 Final Weight/Volume: 50 mL <br /> Date Prepared: 06/21/2007 0800 <br /> Analyte Result Qual RL <br /> Mercury ND 0.050 <br /> Lab Control Spike/ Method: 7471A <br /> Lab Control Spike Duplicate Recovery Report- Batch: 720-22902 Preparation: 7471A <br /> LCS Lab Sample ID:LCS 720-22902/2-A Analysis Batch: 720-22909 Instrument ID: FIMS 100 <br /> Client Matrix: Solid Prep Batch: 720-22902 Lab File ID: N/A <br /> Dilution: 1.0 Units: mg/Kg Initial Weight/Volume: 1 g <br /> Date Analyzed: 06/21/2007 1130 Final Weight/Volume: 50 mL <br /> Date Prepared: 06/21/2007 0800 <br /> LCSD Lab Sample ID:LCSD 720-22902/3-A Analysis Batch: 720-22909 Instrument ID: FIMS 100 <br /> Client Matrix: Solid Prep Batch: 720-22902 Lab File ID: N/A <br /> Dilution: 1.0 Units: mg/Kg Initial Weight/Volume: 1 g <br /> Date Analyzed: 06/21/2007 1131 Final Weight/Volume: 50 mL <br /> Date Prepared: 06/21/2007 0800 <br /> % Rec. <br /> Analyte LCS LCSD Limit RPD RPD Limit LCS Qual LCSD Qual <br /> Mercury 106 104 85- 115 1 20 <br /> Calculations are performed before rounding to avoid round-off errors in calculated results. <br /> STL San Francisco Page 211 of 222 06/25/2007 <br />