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Quality Control Results <br /> Client: Environmental Cost Management, Inc. Job Number: 720-30779-2 <br /> Method Blank-Batch: 720-78750 Method: 300.0 <br /> Preparation: N/A <br /> Lab Sample ID: MB 720-78750/12 Analysis Batch: 720-78750 Instrument ID: CHDionexlC <br /> Client Matrix: Water Prep Batch: N/A Lab File ID: 0927-012.d <br /> Dilution: 1.0 Units: mg/L Initial Weight/Volume: 5 mL <br /> Date Analyzed: 09/27/2010 1209 Final Weight/Volume: 1.0 mL <br /> Date Prepared: N/A <br /> Analyte Result Qual RL <br /> Nitrate as N ND 0.23 <br /> Lab Control Sample/ Method: 300.0 <br /> Lab Control Sample Duplicate Recovery Report- Batch: 720-78750 Preparation: N/A <br /> LCS Lab Sample ID: LCS 720-78750/13 Analysis Batch: 720-78750 Instrument ID: CHDionexlC <br /> Client Matrix: Water Prep Batch: N/A Lab File ID: 0927-013.d <br /> Dilution: 1.0 Units: mg/L Initial Weight/Volume: 5 mL <br /> Date Analyzed: 09/27/2010 1226 Final Weight/Volume: 1.0 mL <br /> Date Prepared: N/A 5 mL <br /> LCSD Lab Sample ID: LCSD 720-78750/14 Analysis Batch: 720-78750 Instrument ID: CHDionexlC <br /> Client Matrix: Water Prep Batch: N/A Lab File ID: 0927-014.d <br /> Dilution: 1.0 Units: mg/L Initial Weight/Volume: 5 mL <br /> Date Analyzed: 09/27/2010 1243 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 98 97 90-110 0.8 20 <br /> TestAmerica San Francisco Page 19 of 25 <br />