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08-02-'12 11;06 FROM -SKS ENTERPRISES INC. 209-7593154 T-378 P009 F-358 <br />July 30, 2012 <br />SKS Enterprises <br />Lab ID <br />Customer <br />Quality Control - Inorganic <br />STKI235737 <br />3-13071 <br />Constituent <br />Method <br />riatdm <br />Type <br />Units <br />Cone. <br />QC Data <br />DQO <br />Note <br />Metals <br />Zinc <br />3050 <br />06/26/12:206975amb <br />PDS <br />mgfkg <br />40.00 <br />-20.1% <br />75-125 <br />P <br />Arsenic <br />60108 <br />07/02/12:209570AC <br />CCV <br />ppm <br />1.000 <br />95.3% <br />90-110 <br />CCB <br />ppm <br />0.0044 <br />0.01 <br />CCV <br />ppm <br />1.000 <br />94.8% <br />90-110 <br />CCB <br />ppin <br />0.0006 <br />0.01 <br />Cadmium <br />60106 <br />07102/12:209570AC <br />CCV <br />ppm <br />1.000 <br />97.6% <br />90-110 <br />CCB <br />ppm <br />-0.00043 <br />0.005 <br />CCV <br />ppm <br />1.000 <br />97.7910 <br />90-110 <br />CCB <br />212m <br />-0.00049 <br />0.005 <br />Chromium <br />6010B <br />07/02112:209570AC <br />CCV <br />ppm <br />1.000 <br />95.4% <br />90-110 <br />CCB <br />ppm <br />-0.0012 <br />0.01 <br />CCV <br />ppm <br />1.000 <br />94.7% <br />90-110 <br />CCB <br />Ppm <br />-0.0019 <br />0.01 <br />Copper <br />6010B <br />07/02/12;209570AC <br />CCV <br />ppm <br />1.000 <br />99.9% <br />90-110 <br />CCB <br />ppm <br />-0.0028 <br />0.01 <br />CCV <br />ppm <br />1.000 <br />100% <br />90-110 <br />CCB <br />POM <br />0.0038 <br />0.01 <br />Lend <br />6010B <br />07/02/12:209570AC <br />CCV <br />ppm <br />11000 <br />96.8% <br />90-110 <br />CCB <br />ppm <br />0.0008 <br />0.01 <br />CCV <br />ppm <br />11000 <br />96.5% <br />90-110 <br />CCB <br />ppm <br />-0.0003 <br />0.01 <br />Nickel <br />6010B <br />07/02/12:209570AC <br />CCV <br />ppm <br />1.000 <br />97.4% <br />90-110 <br />CCB <br />ppm <br />0.0005 <br />0.01 <br />CCV <br />ppm <br />1.000 <br />97.3% <br />90.110 <br />CCB <br />I ppm <br />1 0.0004 <br />0.01 <br />Zinc <br />60108 <br />07/02/12:209570AC <br />CCV <br />ppnt1.000 <br />94.7% <br />90-110 <br />CCB <br />ppm <br />0.0009 <br />0.02 <br />CCV <br />ppm <br />1.000 <br />93.9% <br />90.110 <br />CCB <br />m <br />-0.0013 <br />0.02 <br />Mercury <br />7471 <br />07/06/12:207387ae <br />Blank <br />mg/kg <br />ND <br /><0.03 <br />LCs <br />mg/kg <br />0.2500 <br />98.4% <br />85115 <br />MS <br />mg/kg <br />0.2500 <br />-332% <br /><1/a <br />(CC 1281926-001) <br />MSD <br />mg/kg <br />0.2500 <br />-313% <br /><t/ <br />14SRPb <br />m <br />0.2500 <br />7.4% <br /><20 <br />Wet Chem <br />% Solids <br />2540Cr <br />06/22/12:206886jam <br />Blank <br />% <br />ND <br /><0.1 <br />(SP 1206158-001) <br />Du <br />% <br />1.1% <br />23.9 <br />Definition <br />CCV : Continuing Calibration Verification - Analyzed to verify the instrument calibration i3 within criteria. <br />CCB : Continuing Calibration Blank - Analyzed to verify the instrument baseline is within criteria. <br />Blank : Method Blank - prepared to verify that the preparation process is not contributing contamination to the samples. <br />LCs : Laboratory Control Standard/Samplo - 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 affcct.Q analyte recovery. <br />: Duplicate Sample - A random sample with each batch is prepared and analyzed in duplicate. The relative percent difference is an <br />Dup <br />indication of precision for the preparation and analysis_ <br />: MS/MSD Relative Percent Difference (RPD) - The MS relative percent difference is an indication of precision for the preparation <br />MSRPD <br />and analysts. <br />ND : tion -detect - Result was below the DQO listed for the analyte. <br /><1/a : High Sample Background - Spike concentration was lcks than one forth of the sample concent radon. <br />DQO ; Data Quality Objective - This is the criteria a ainst which the quality control data is compared. <br />Page 6 of 6 <br />Received Time Aub, 2. 2012 11:08AM No.0200 <br />