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Quality Control Results <br /> Client: Environmental Cost Management, Inc. Job Number: 720-19656-1 <br /> Method Blank- Batch: 500-63461 Method: 6020 <br /> Preparation: 3005A <br /> Total Recoverable <br /> Lab Sample ID: MB 500-63461/1-A Analysis Batch: 500-63525 Instrument ID: ThermoElectron ICP-MS <br /> Client Matrix: Water Prep Batch: 500-63461 Lab File ID: N/A <br /> Dilution: 1.0 Units: ug/L Initial Weight/Volume: 50 mL <br /> Date Analyzed: 05/12/2009 0229 Final Weight/Volume: 50 mL <br /> Date Prepared: 05/11/2009 0830 <br /> Analyte Result Qual RL <br /> Boron ND 50 <br /> Beryllium ND ^ 1.0 <br /> Method Blank- Batch: 500-63461 Method: 6020 <br /> Preparation: 3005A <br /> Total Recoverable <br /> Lab Sample ID: MB 500-63461/1-A Analysis Batch: 500-63734 Instrument ID: ThermoElectron ICP-MS <br /> Client Matrix: Water Prep Batch: 500-63461 Lab File ID: N/A <br /> Dilution: 1.0 Units: ug/L Initial Weight/Volume: 50 mL <br /> Date Analyzed: 05/13/2009 1753 Final Weight/Volume: 50 mL <br /> Date Prepared: 05/11/2009 0830 <br /> Analyte Result Qual RL <br /> Antimony ND 2.0 <br /> Arsenic ND 1.0 <br /> Barium ND 2.5 <br /> Chromium ND 5.0 <br /> Cobalt ND 1.0 <br /> Iron ND 100 <br /> Magnesium ND 200 <br /> Manganese ND 2.5 <br /> Potassium ND 500 <br /> Selenium ND 2.5 <br /> Molybdenum ND 4.0 <br /> Sodium ND 200 <br /> Vanadium ND 5.0 <br /> Zinc ND 20 <br /> Calculations are performed before rounding to avoid round-off errors in calculated results. <br /> TestAmerica San Francisco Page 57 of 74 <br />