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`, <br />November 21, 2002 <br />Advanced Interconnect Tech. <br />Quality Control - Inorganic <br />Lab ID STK235692 <br />Customer : 3-3147 <br />1EConstituent <br />Method <br />Date/ED <br />Type <br />Units <br />Cone. <br />QC Data <br />DQO <br />Note <br />Metals <br />Zinc <br />3010A <br />11/08/2002:A207 <br />PDS <br />mg/L <br />0.8000 <br />99.6% <br />75-125 <br />MS <br />mg/L <br />0.8000 <br />98.8% <br />75-125 <br />(SP 211287-01) <br />MSD <br />mg/L <br />0.8000 <br />95.5% <br />75-125 <br />MSRPD <br />mg/L <br />2.8% <br />520.0 <br />200.7 <br />11/12/2002:A <br />02 -CCB <br />mg/L <br />ND <br /><0.02 <br />02-CCV <br />mg/L <br />0.5000 <br />102% <br />90-110 <br />03 -CCB <br />mg/L <br />ND <br /><0.02 <br />03-CCV <br />mg/L <br />0.5000 <br />102% <br />90-110 <br />Wet Chem <br />Cyanide. Total <br />450OCNCE <br />11/I1/2002:A210 <br />Blank <br />mg/L <br />ND <br /><0.01 <br />LCS <br />mg/L <br />0.1000 <br />102% <br />91-116 <br />MS <br />mg/L <br />0.05000 <br />6.2% <br />64.122 <br />435 <br />(SP 211415-01) <br />MSD <br />mg/L <br />0.05000 <br />0.0% <br />64-122 <br />435 <br />MSRPD <br />mg/L <br />0.0031 <br />50.0100 <br />Cyanide <br />450OCNCE <br />ll/14/2002:A <br />00 -CCB <br />mg/L <br />ND <br /><0.01 <br />00-CCV <br />mg/L <br />0.1000 <br />99.5% <br />90-110 <br />01 -CCB <br />mg/L <br />ND <br /><0.01 <br />01-CCV <br />mg/L <br />0.1000 <br />100% <br />90.110 <br />Explanations <br />435 Sample matrix may be affecting this analyte. Data was accepted based on the LCS or CCV recovery. <br />Definitions <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/GF.4A) <br />MS/MSD Mamix Spikes - A random sample is spiked with a known amount or 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 />STK235692: Quality Control Page 5 <br />