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Quality Control Results <br /> Client: Environmental Cost Management, Inc. Job Number: 720-29703-1 <br /> Method Blank-Batch: 720-75700 Method: 300.0 <br /> Preparation: N/A <br /> Lab Sample ID: MB 720-75700/45 Analysis Batch: 720-75700 Instrument ID: CHDionexlC <br /> Client Matrix: Water Prep Batch: N/A Lab File ID: 0803-045.d <br /> Dilution: 1.0 Units: mg/L Initial Weight/Volume: 5 mL <br /> Date Analyzed: 08/04/2010 0043 Final Weight/Volume: 1.0 mL <br /> Date Prepared: N/A <br /> Analyte Result Qual RL <br /> Nitrate as N ND 0.23 <br /> Sulfate ND 1.0 <br /> Chloride ND 1.0 <br /> Lab Control Sample/ Method: 300.0 <br /> Lab Control Sample Duplicate Recovery Report-Batch: 720-75700 Preparation: N/A <br /> LCS Lab Sample ID: LCS 720-75700/46 Analysis Batch: 720-75700 Instrument ID: CHDionexlC <br /> Client Matrix: Water Prep Batch: N/A Lab File ID: 0803-046.d <br /> Dilution: 1.0 Units: mg/L Initial Weight/Volume: 5 mL <br /> Date Analyzed: 08/04/2010 0100 Final Weight/Volume: 1.0 mL <br /> Date Prepared: N/A 5 mL <br /> LCSD Lab Sample ID: LCSD 720-75700/47 Analysis Batch: 720-75700 Instrument ID: CHDionexlC <br /> Client Matrix: Water Prep Batch: N/A Lab File ID: 0803-047.d <br /> Dilution: 1.0 Units: mg/L Initial Weight/Volume: 5 mL <br /> Date Analyzed: 08/04/2010 0118 Final Weight/Volume: 1.0 mL <br /> Date Prepared: N/A 5 mL <br /> %Rec. <br /> Analyte LCS LCSD Limit RPD RPD Limit LCS Qual LCSD Qual <br /> Nitrate as N 103 104 90-110 1 20 <br /> Sulfate 95 95 90-110 1 20 <br /> Chloride 101 102 90-110 1 20 <br /> TestAmerica San Francisco Page 63 of 73 <br />