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August 29, 2007 <br />SKS Enterprises <br />Ii I[sit--timm <br />Lab ID : STK736929 <br />Customer: 3-13071 <br />Constituent <br />Method <br />Date/ID <br />Type <br />Units <br />Conc. <br />QC Data <br />DQO <br />Note <br />Metals <br />Lead <br />6010B <br />08/06/2007:A <br />00-ICB <br />ppm <br />ND <br /><0.01 <br />00 -CCB <br />ppm <br />ND <br /><0.01 <br />00 -ICV <br />ppm <br />1.000 <br />103% <br />95-105 <br />00-CCV <br />ppm <br />1.000 <br />108% <br />90-110 <br />Nickel <br />3050B <br />08/03/2007:A209 <br />Blank <br />mg/kg <br />ND <br /><0.5 <br />LCS <br />mg/kg <br />40.00 <br />104% <br />85-115 <br />PDS <br />mg/kg <br />40.00 <br />98.3% <br />75-125 <br />Ms <br />mg/kg <br />40.00 <br />99.0% <br />75-125 <br />(VI 741620-03) <br />MSD <br />mg/kg <br />40.00 <br />99.2% <br />75-125 <br />MSRPD <br />mg/kg <br />0.2% <br />520 <br />6010B <br />08/06/2007:A <br />00-ICB <br />ppm <br />ND <br /><0.01 <br />00 -CCB <br />ppm <br />ND <br /><0.01 <br />00 -ICV <br />ppm <br />1.000 <br />100% <br />95-105 <br />00-CCV <br />ppm <br />1.000 <br />106% <br />90-110 <br />Selenium <br />3050B <br />08/03/2007:A209 <br />Blank <br />mg/kg <br />ND <br /><0.5 <br />LCS <br />mg/kg <br />40.00 <br />98.3% <br />85-115 <br />PDS <br />mg/kg <br />40.00 <br />95.9% <br />75-125 <br />MS <br />mg/kg <br />40.00 <br />97.1% <br />75-125 <br />(VI 741620-03) <br />MSD <br />mg/kg <br />40.00 <br />96.3% <br />75-125 <br />MSRPD <br />mg/kg <br />0.8% <br />520 <br />6010B <br />08/06/2007:A <br />00-ICB <br />ppm <br />ND <br /><0.01 <br />00 -CCB <br />ppm <br />ND <br /><0.01 <br />00 -ICV <br />ppm <br />1.000 <br />100% <br />95-105 <br />00-CCV <br />ppm <br />1.000 <br />104% <br />90-110 <br />Zinc <br />3050B <br />08/03/2007:A209 <br />Blank <br />mg/kg <br />ND <br /><1 <br />LCS <br />mg/kg <br />100.0 <br />107% <br />85-115 <br />PDS <br />mg/kg <br />100.0 <br />114% <br />75-125 <br />MS <br />mg/kg <br />100.0 <br />105% <br />75-125 <br />(VI 741620-03) <br />MSD <br />mg/kg <br />100.0 <br />105% <br />75-125 <br />MSRPD <br />mg/kg <br />0.0% <br /><20 <br />6010B <br />08/06/2007:A <br />00-ICB <br />ppm <br />ND <br /><0.02 <br />00 -CCB <br />ppm <br />ND <br /><0.02 <br />00 -ICV <br />ppm <br />1.000 <br />102% <br />95-105 <br />00-CCV <br />ppm <br />1.000 <br />108% <br />90-110 <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/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 />ICB Initial Calibration Blank - Analyzed to verify the instrument baseline is within criteria. <br />ICV Initial Calibration Verification - Analyzed to verify the instrument calibration is within criteria. <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 />STK736929: Quality Control Page 2 <br />