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Quality Control Results <br /> Client: Environmental Cost Management, Inc. Job Number: 720-19656-1 <br /> Matrix Spike/ Method: 300.0 <br /> Matrix Spike Duplicate Recovery Report- Batch: 720-50119 Preparation: N/A <br /> MS Lab Sample ID: 720-19654-A-2 MS Analysis Batch: 720-50119 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: 05/06/2009 0722 Final Weight/Volume: 5 mL <br /> Date Prepared: N/A <br /> MSD Lab Sample ID: 720-19654-A-2 MSD Analysis Batch: 720-50119 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: 05/06/2009 0814 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 91 94 80- 120 1 20 <br /> Chloride 80 80 80- 120 0 20 <br /> Calculations are performed before rounding to avoid round-off errors in calculated results. <br /> TestAmerica San Francisco Page 62 of 74 <br />