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Quality Control Results <br /> Client: Chemical Data Management Job Number: 720-18652-1 <br /> Method Blank-Batch: 720-47977 Method: 6010B <br /> Preparation: 3010A <br /> Lab Sample ID: MB 720-47977/1-A Analysis Batch: 720-48052 Instrument ID: Varian ICP <br /> Client Matrix: Water Prep Batch: 720-47977 Lab File ID: N/A <br /> Dilution: 1.0 Units: mg/L Initial WeighWolume: 50 mL <br /> Date Analyzed: 03/26/2009 1415 Final Weight/Volume: 50 mL <br /> Date Prepared: 03/25/2009 0748 <br /> Analyte Result Qual RL <br /> Cadmium ND 0.0019 <br /> Chromium ND 0.0075 <br /> Nickel ND 0.0065 <br /> Lead ND 0.0060 <br /> Zinc ND 0.020 <br /> Copper ND 0.0065 <br /> Lab Control Spike/ Method:6010B <br /> Lab Control Spike Duplicate Recovery Report- Batch: 720-47977 Preparation: 3010A <br /> LCS Lab Sample ID:LCS 720-47977/2-A Analysis Batch: 720-48052 Instrument ID: Varian ICP <br /> Client Matrix: Water Prep Batch: 720-47977 Lab File ID: N/A <br /> Dilution: 1.0 Units: mg/L Initial WeightlVolume: 50 mL <br /> Date Analyzed: 03/26/2009 1418 Final WeighWolume: 50 mL <br /> Date Prepared: 03/252009 0748 <br /> LCSD Lab Sample ID:LCSD 720-47977/3-A Analysis Batch: 720-48052 Instrument ID: Varian ICP <br /> Client Matrix: Water Prep Batch: 720-47977 Lab File ID: N/A <br /> Dilution: 1.0 Units: mg/L Initial WeighWolume: 50 mL <br /> Date Analyzed: 03/26/2009 1422 Final WeighWolume: 50 ml- <br /> Date <br /> LDate Prepared: 03/252009 0748 <br /> %Rec. <br /> Analyte LCS LCSD Limit RPD RPD Limit LCS oust LCSD Qual <br /> Cadmium 94 97 80-120 3 20 <br /> Chromium 98 101 80-120 3 20 <br /> Nickel 95 98 80-120 3 20 <br /> Lead 96 99 80-120 3 20 <br /> Zinc 95 97 80-120 3 20 <br /> Copper 97 100 80-120 3 20 <br /> Calculations are performed before rounding to avoid round-off errors in calculated results. <br /> TestAmerica San Francisco Page 13 of 17 <br />