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Quality Control Results <br /> Client: Chemical Data Management Job Number: 720-25330-1 <br /> Method Blank- Batch: 720-64510 Method: 7470A <br /> Preparation: 7470A <br /> Lab Sample ID: MB 720-64510/1-A Analysis Batch: 720-64573 Instrumento: LL HG Analyzer <br /> Client Matrix: Water Prep Batch: 720-64510 Lab File ID: N/A <br /> Dilution: 1.0 Units: mg/L Initial WeighWolume: 25 mL <br /> Date Analyzed: 01/20/2010 1300 Final Weight/Volume: 50 mL <br /> Date Prepared: 01/19/2010 1523 <br /> Analyte Result Qual RL <br /> Mercury ND 0.00020 <br /> Lab Control Sample/ Method: 7470A <br /> Lab Control Sample Duplicate Recovery Report-Batch: 720-64510 Preparation: 7470A <br /> LCS Lab Sample ID: LCS 720-64510/2-A Analysis Batch: 720-64573 Instrument ID: LL HG Analyzer <br /> Client Matrix: Water Prep Batch: 720-64510 Lab File ID: N/A <br /> Dilution: 1.0 Units: mg/L Initial WeighWolume: 25 mL <br /> Date Analyzed: 01/20/2010 1303 Final WeighWolume: 50 mL <br /> Date Prepared: 01/19/2010 1523 <br /> LCSD Lab Sample ID: LCSD 720-64510/3-A Analysis Batch: 720-64573 Instrument ID: LL HG Analyzer <br /> Client Matrix: Water Prep Batch: 720-64510 Lab File to: N/A <br /> Dilution: 1.0 Units: mg/L Initial Weight/Volume: 25 mL <br /> Date Analyzed: 01/20/2010 1305 Final WeighWolume: 50 mL <br /> Date Prepared: 01/19/2010 1523 <br /> Rec. <br /> Analyte LCS LCSD Limit RPD RPD Limit LCS Qual LCSD oust <br /> Mercury 99 96 80-120 3 20 <br /> Calculations are performed before rounding to avoid round-off errors in calculated results. <br /> TestAmerica San Francisco Page 13 of 16 <br />