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Quality Control Results <br /> Client: Environmental Cost Management, Inc. Job Number: 720-29703-1 <br /> Method Blank-Batch: 720-75811 Method: 300.0 <br /> Preparation: N/A <br /> Lab Sample ID: MB 720-75811/35 Analysis Batch: 720-75811 Instrument ID: CHDionexlC <br /> Client Matrix: Water Prep Batch: N/A Lab File ID: 0804-035.d <br /> Dilution: 1.0 Units: mg/L Initial Weight/Volume: 5 mL <br /> Date Analyzed: 08/04/2010 1848 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: 720-75811 Preparation: N/A <br /> LCS Lab Sample ID: LCS 720-75811/36 Analysis Batch: 720-75811 Instrument ID: CHDionexlC <br /> Client Matrix: Water Prep Batch: N/A Lab File ID: 0804-036.d <br /> Dilution: 1.0 Units: mg/L Initial Weight/Volume: 5 mL <br /> Date Analyzed: 08/04/2010 1905 Final Weight/Volume: 1.0 mL <br /> Date Prepared: N/A 5 mL <br /> LCSD Lab Sample ID: LCSD 720-75811/37 Analysis Batch: 720-75811 Instrument ID: CHDionexlC <br /> Client Matrix: Water Prep Batch: N/A Lab File ID: 0804-037.d <br /> Dilution: 1.0 Units: mg/L Initial Weight/Volume: 5 mL <br /> Date Analyzed: 08/04/2010 1922 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 107 106 90-110 0 20 <br /> Sulfate 106 107 90-110 2 20 <br /> Chloride 105 105 90-110 0 20 <br /> TestAmerica San Francisco Page 65 of 73 <br />