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Quality Control Results <br /> Client: Environmental Cost Management, Inc. Job Number: 720-20560-1 <br /> Method Blank-Batch: 720-52200 Method: 300.0 <br /> Preparation: N/A <br /> Lab Sample ID: MB 720-52200/2 Analysis Batch: 720-52200 Instrument ID: DionexlC <br /> Client Matrix: Water Prep Batch: N/A Lab File ID: N/A <br /> Dilution: 1.0 Units: mg/L Initial Weight/Volume: <br /> Date Analyzed: 06/11/2009 0650 Final Weight/Volume: 5 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: 720-52200 Preparation: N/A <br /> LCS Lab Sample ID: LCS 720-52200/1 Analysis Batch: 720-52200 Instrument ID: DionexlC <br /> Client Matrix: Water Prep Batch: N/A Lab File ID: N/A <br /> Dilution: 1.0 Units: mg/L Initial Weight/Volume: <br /> Date Analyzed: 06/11/2009 0707 Final Weight/Volume: 5 mL <br /> Date Prepared: N/A <br /> LCSD Lab Sample ID: LCSD 720-52200/10 Analysis Batch: 720-52200 Instrument ID: DionexlC <br /> Client Matrix: Water Prep Batch: N/A Lab File ID: N/A <br /> Dilution: 1.0 Units: mg/L Initial Weight/Volume: <br /> Date Analyzed: 06/11/2009 0724 Final Weight/Volume: 5 mL <br /> Date Prepared: N/A <br /> %Rec. <br /> Analyte LCS LCSD Limit RPD RPD Limit LCS Qual LCSD Qual <br /> Nitrate as N 101 99 90-110 1 20 <br /> Calculations are performed before rounding to avoid round-off errors in calculated results. <br /> TestAmerica San Francisco Page 26 Of 29 <br />