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Quality Control Results <br /> Client: Geomatrix Consultants Inc. Job Number: 720-10473-1 <br /> Method Blank- Batch: 720-25337 Method: 6010B <br /> Preparation: 3010A <br /> Lab Sample ID: MB 720-25337/1-A Analysis Batch: 720-25355 Instrument ID: Varian ICP <br /> Client Matrix: Water Prep Batch: 720-25337 Lab File ID: N/A <br /> Dilution: 1.0 Units: mg/L Initial Weight/Volume: 50 mL <br /> Date Analyzed: 08/28/2007 0816 Final Weight/Volume: 50 mL <br /> Date Prepared: 08/27/2007 1643 <br /> Analyte Result Qual RL <br /> Calcium ND 0.20 <br /> Copper ND 0.0050 <br /> Iron ND 0.20 <br /> Potassium ND 1.0 <br /> Magnesium ND 0.20 <br /> Manganese ND 0.0050 <br /> Sodium ND 1.0 <br /> Zinc ND 0.010 <br /> Lab Control Spike/ Method: 6010B <br /> Lab Control Spike Duplicate Recovery Report- Batch: 720-25337 Preparation: 3010A <br /> LCS Lab Sample ID:LCS 720-25337/2-A Analysis Batch: 720-25355 Instrument ID: Varian ICP <br /> Client Matrix: Water Prep Batch: 720-25337 Lab File ID: N/A <br /> Dilution: 1.0 Units: mg/L Initial Weight/Volume: 50 mL <br /> Date Analyzed: 08/28/2007 0819 Final Weight/Volume: 50 mL <br /> Date Prepared: 08/27/2007 1643 <br /> LCSD Lab Sample ID:LCSD 720-25337/3-A Analysis Batch: 720-25355 Instrument ID: Varian ICP <br /> Client Matrix: Water Prep Batch: 720-25337 Lab File ID: N/A <br /> Dilution: 1.0 Units: mg/L Initial Weight/Volume: 50 mL <br /> Date Analyzed: 08/28/2007 0822 Final Weight/Volume: 50 mL <br /> Date Prepared: 08/27/2007 1643 <br /> % Rec. <br /> Analyte LCS LCSD Limit RPD RPD Limit LCS Qual LCSD Qual <br /> Calcium 96 96 80- 120 0 20 <br /> Copper 96 96 80- 120 1 20 <br /> Iron 96 96 80- 120 1 20 <br /> Potassium 93 93 80- 120 0 20 <br /> Magnesium 95 95 80- 120 0 20 <br /> Manganese 96 96 80- 120 1 20 <br /> Sodium 97 97 80- 120 0 20 <br /> Zinc 98 98 80- 120 1 20 <br /> Calculations are performed before rounding to avoid round-off errors in calculated results. <br /> TestAmerica San Francisco Page 36 of 50 09/10/2007 <br />