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July 31, 2007 <br />Panella Trucking <br />Quality Control - Inorganic <br />Lab ID : STK734832 <br />Customer: 3-9812 <br />Constituent <br />Method <br />Date/ID <br />Type <br />Units <br />Conc. <br />QC Data <br />DQO <br />Note <br />Metals <br />Vanadium <br />3050B <br />06/05/2007:A209 <br />PDS <br />mg/kg <br />40.00 <br />80.5% <br />75-125 <br />MS <br />mg/kg <br />40.00 <br />92.2% <br />75-125 <br />(STK734832-01) <br />MSD <br />mg/kg <br />40.00 <br />95.2% <br />75-125 <br />MSRPD <br />mg/kg <br />2.2% <br /><_20 <br />6010B <br />06/06/2007: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 />98.0% <br />95-105 <br />00-CCV <br />ppm <br />1.000 <br />98.4% <br />90-110 <br />Zinc <br />3050B <br />06/05/2007:A209 <br />Blank <br />mg/kg <br />ND <br /><1 <br />LCS <br />mg/kg <br />100.0 <br />96.5% <br />85-115 <br />PDS <br />mg/kg <br />100.0 <br />84.0% <br />75-125 <br />MS <br />mg/kg <br />100.0 <br />95.9% <br />75-125 <br />(STK734832-01) <br />MSD <br />mg/kg <br />100.0 <br />93.0% <br />75-125 <br />MSRPD <br />mg/kg <br />2.6% <br />:520 <br />6010B <br />06/06/2007:A <br />004CB <br />ppm <br />ND <br /><0.02 <br />00 -CCB <br />ppm <br />ND <br /><0.02 <br />004CV <br />ppm <br />1.000 <br />99.7% <br />95-105 <br />00-CCV <br />ppm <br />1.000 <br />96.4% <br />90-110 <br />Wet Chem <br />% Solids <br />2540E <br />06/22/2007:A238 <br />Blank <br />% <br />ND <br /><0.1 <br />Dup <br />% <br />4.4% <br />23.9 <br />Explanations <br />430 <br />Post Digestion Spike (PDS) not within Acceptance Range (AR) because of matrix interferences affecting <br />this analyte. <br />435 <br />Sample matrix may be affecting this analyte. Data was accepted based on the LCS or CCV recovery. <br />Definitions <br />Blank <br />Method Blank - Prepared to verify that the preparation process is not contributing <br />contamination to the samples. <br />LCS <br />Laboratory Control Standard/Sample - Prepared to verify that the preparation process is not affecting analyte <br />recovery. <br />PDS <br />Post Digestion Spike (ICP/GFAA) <br />MS/MSD <br />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 />Dup <br />Duplicate Sample - A random sample with each batch is prepared and analyzed in duplicate. <br />The relative percent <br />difference is an indication of precision for the preparation and analysis. <br />ICB <br />Initial Calibration Blank - Analyzed to verify the instrument baseline is within criteria. <br />ICV <br />Initial 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 <br />criteria. <br />CCV <br />Continuing Calibration Verification - Analyzed to verify the instrument calibration is within criteria. <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 compared. <br />Report continued on next page... <br />STK734832: Quality Control Page 4 <br />