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Quality Control Results <br /> Client: Environmental Cost Management, Inc. Job Number: 720-19009-1 <br /> Method Blank- Batch: 720-48611 Method: 300.0 <br /> Preparation: N/A <br /> Lab Sample ID: MB 720-48611/31 Analysis Batch: 720-48611 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: 04/14/2009 1234 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 Spike - Batch: 720-48611 Method: 300.0 <br /> Preparation: N/A <br /> Lab Sample ID: LCS 720-48611/30 Analysis Batch: 720-48611 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: 04/14/2009 1252 Final Weight/Volume: 5 mL <br /> Date Prepared: N/A <br /> Analyte Spike Amount Result % Rec. Limit Qual <br /> Nitrate as N 2.26 2.23 99 90- 110 <br /> Matrix Spike/ Method: 300.0 <br /> Matrix Spike Duplicate Recovery Report- Batch: 720-48611 Preparation: N/A <br /> MS Lab Sample ID: 720-19009-1 Analysis Batch: 720-48611 Instrument ID: DionexlC <br /> Client Matrix: Water Prep Batch: N/A Lab File ID: N/A <br /> Dilution: 1.0 Initial Weight/Volume: <br /> Date Analyzed: 04/14/2009 1326 Final Weight/Volume: 5 mL <br /> Date Prepared: N/A <br /> MSD Lab Sample ID: 720-19009-1 Analysis Batch: 720-48611 Instrument ID: DionexlC <br /> Client Matrix: Water Prep Batch: N/A Lab File ID: N/A <br /> Dilution: 1.0 Initial Weight/Volume: <br /> Date Analyzed: 04/14/2009 1343 Final Weight/Volume: 5 mL <br /> Date Prepared: N/A <br /> % Rec. <br /> Analyte MS MSD Limit RPD RPD Limit MS Qual MSD Qual <br /> Nitrate as N 103 101 80- 120 2 20 <br /> Calculations are performed before rounding to avoid round-off errors in calculated results. <br /> TestAmerica San Francisco Page 9 of 12 <br />