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June 03, 2002 Lab ID : STK232485 <br /> Holz Rubber Co. Customer : 3-10955 <br /> Quality Control - Inorganic <br /> Constituent Method Date/ID Type Units Conc. QC Datar <br /> e <br /> Metals <br /> Nickel 200.7 05/20/2002:D 08-CCB mg/L ND <br /> 08-CCV mg/L 1 95.9% <br /> 109-CCB mg/L ND <br /> 09-CCV mg/L 1.000 98.5% <br /> Silver 3010A 05/17/2002:A207 Blank mg/L ND <br /> LCS mg/L 0.8000 98.2% <br /> PDS mg/L 0.8000 98.2% <br /> MS mg/L 0.8000 98.6%(SP 204296-01) MSD mg/L 0.8000 99.7%MSRPD mg/L 1.1% <br /> 200.7 ! 05/20/2002:D 08-CCB mg/L ND <0.01 <br /> 08-CCV mg/L 1.000 99.1% 90-110 <br /> 09-CCB mg/L ND <0.01 <br /> 09-CCV mg/L 1.000 101% 90-110 <br /> Zinc 3010A, 05/17/2002:A207 Blank mg/L ND <0.02 <br /> LCS mg/L 0.8000 95.1% 85-115 <br /> PDS mg/L 0.8000 101% 75-125 <br /> Ms mg/L 0.8000 96.0% 75-125 <br /> (SP 204296-01) MSD mg/L 0.8000 97.1% 75-125 <br /> MSRPD mg/L Lo% 520.0 <br /> 200.7 05/20/2002:D 08-CCB mg/L ND <0.02 <br /> 08-CCV mg/L 0.5000 97.2% 90.110 <br /> 09-CCB mg/L ND <0.02 <br /> 09-CCV mg/L 0.5000 101% 90-110 <br /> Wet Chem <br /> Cyanide. Total 450OCNCE 05/15/2002:A210 Blank mg/L ND <0.01 <br /> LCS mg/L 0.1000 95.2% 91-116 <br /> MS mg/L 0.05000 91.8% 64-122 <br /> (SP 204200-01) MSD mg/L 0.05000 86.3% 64-122 <br /> MSRPD mg/L 0.0028 50.0100 <br /> Cyanide 450OCNCE 05/16/2002:B 00-CCB mg/L ND <0.01 <br /> 00-CCV mg/L - 0.1000 101% 90-110 <br /> 01-CCB mg/L ND <0.01 <br /> 0!-CCV mg/L 0AW) 101% 90-110 <br /> Deftttitions <br /> Blank Method Blank - Prepared to verify that the preparation process is not contributing contamination to the samples. <br /> LCS Laboratory Control Standard/Sample - Prepared to verify that the preparation process is not affecting analyte <br /> recovery. <br /> PDS Post Digestion Spike (ICP/GFAA) <br /> MS/MSD : Matrix Spikes - A random sample is spiked with a known amount of analyte. The recoveries are an indication o <br /> how that sample matrix affects analyte recovery. <br /> CCB Continuing Calibration Blank - Analyzed to verify the instrument baseline is within criteria. <br /> CCV Continuing Calibration Verification - Analyzed to verify the instrument calibration is within criteria. <br /> ND Non-detect - Result was below the DQO listed for the analyte. <br /> DQO Data Quality Objective - This is the criteria against which the quality control data is compared. <br /> STK232485: Quality Control Page 2 <br />