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Quality Control Results <br /> Client: Environmental Cost Management, Inc. Job Number: 720-19656-1 <br /> Method Blank- Batch: 720-50119 Method: 300.0 <br /> Preparation: N/A <br /> Lab Sample ID: MB 720-50119/16 Analysis Batch: 720-50119 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: 05/06/2009 0448 Final Weight/Volume: 5 mL <br /> Date Prepared: N/A <br /> Analyte Result Qual RL <br /> Nitrate as N ND 0.23 <br /> Chloride ND 1.0 <br /> Lab Control Sample - Batch: 720-50119 Method: 300.0 <br /> Preparation: N/A <br /> Lab Sample ID: LCS 720-50119/15 Analysis Batch: 720-50119 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: 05/06/2009 0505 Final Weight/Volume: 5 mL <br /> Date Prepared: N/A <br /> Analyte Spike Amount Result % Rec. Limit Qual <br /> Nitrate as N 2.26 2.20 97 90- 110 <br /> Chloride 10.0 9.51 95 90- 110 <br /> Calculations are performed before rounding to avoid round-off errors in calculated results. <br /> TestAmerica San Francisco Page 61 of 74 <br />