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November 2, 2010 Lab ID : STK1039390 <br />Panella Trucking Customer : 3-9812 <br />Quality Control - Inorganic <br />Constituent <br />Method <br />Date/ID <br />Type <br />Units <br />Cone. <br />QC Data <br />DQO <br />Note <br />Metals <br />Thallium <br />6010B <br />10/27/2010:213652 <br />CCB <br />Epm <br />-0.0021 <br />0.01 <br />6010B <br />10/28/2010:213707 <br />CCV <br />ppm <br />0.9995 <br />99.3% <br />90-110 <br />CCB <br />ppm <br />0.0003 <br />0.01 <br />CCV <br />ppm <br />0.9995 <br />97.7% <br />90-110 <br />CCB <br />PPM <br />0.0011 <br />0.01 <br />Vanadium <br />6010B <br />10/27/2010:213652 <br />CCV <br />ppm <br />1.000 <br />96.5% <br />90-110 <br />CCB <br />ppm <br />0.0002 <br />0.01 <br />CCV <br />ppm <br />1.000 <br />95.4% <br />90-110 <br />CCB <br />PPM <br />0.00009 <br />0.01 <br />inc <br />6010B <br />10/27/2010:213652 <br />CCV <br />ppm <br />1.000 <br />97.5% <br />90-110 <br />CCB <br />ppm <br />-0.0065 <br />0.02 <br />CCV <br />ppm <br />1.000 <br />95.2% <br />90-110 <br />CCB <br />ppro <br />-0.0079 <br />0.02 <br />Mercury <br />7470 <br />10/26/2010:211178 <br />Blank <br />mg/kg <br />ND <br /><0.03 <br />LCS <br />mg/kg <br />0.2498 <br />97.9% <br />85-115 <br />MS <br />mg/kg <br />0.2437 <br />139% <br />75-125 <br />435 <br />(STK1039390-002) <br />MSD <br />mg/kg <br />0.2379 <br />140% <br />75-125 <br />435 <br />MSRPD <br />m <br />0.2379 <br />1.6% <br /><10 <br />Definition <br />ICV <br />: Initial Calibration Verification - Analyzed to verify the instrument calibration is within criteria. <br />ICB <br />: Initial Calibration Blank - Analyzed to verify the instrument baseline is within criteria. <br />CCV <br />: Continuing Calibration Verification - Analyzed to verify the instrument calibration is within criteria. <br />CCB <br />: Continuing Calibration Blank - Analyzed to verify the instrument baseline is within criteria. <br />Blank <br />: Method Blank - Prepared to verify that the preparation process is not contributing contamination to the samples. <br />LCS <br />: Laboratory Control Standard/Sample - Prepared to verify that the preparation process is not affecting analyte recovery. <br />: Matrix Spikes - A random sample is spiked with a known amount of analyte. The recoveries are an indication of how that sample <br />MS <br />matrix affects analyte recovery. <br />: Matrix Spike Duplicate of MS/MSD pair - A random sample duplicate is spiked with a known amount of analyted. The recoveries <br />MSD <br />are an indication of how that sample matrix affects analyte recovery. <br />: MS/MSD Relative Percent Difference (RPD) - The MS relative percent difference is an indication of precision for the preparation <br />MSRPD <br />and analysis. <br />ND <br />: Non -detect - Result was below the DQO listed for the analyte. <br />DQO <br />: Data Quality Objective - This is the criteria against which the quality control data is com ared. <br />Explanation <br />435 <br />: Sam le matrix may be affecting this analyte. Data was accepted based on the LCS or CCV recovery. <br />Page 8 of 8 <br />