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December 11, 2008 Lab ID : STK0851907 <br /> Luhdorff& Scalmanini Consulting Customer : 3-12023 <br /> Quality Control -Inorganic <br /> Constituent Method Date/ID Type knits Conc. QC Data DQO Note <br /> Wet Chem <br /> Nitrite 300.0 11/26/2008:214717 CCV ppm 15.00 105% 90-110 <br /> CCB ppm 0.000 0.3 <br /> CCV ppm 15.00 106% 90-110 <br /> CCB ppm 0.000 0.3 <br /> CCV pptn 15.00 108% 90-110 <br /> CCB ppm 0.000 0.3 <br /> CCV ppm 15.00 103% 90-110 <br /> CCB ppm 0.000 0.3 <br /> CCV PPM 15.00 106% 90-110 <br /> H 4500-H B 12/09/2008:212541 Dup, units 0.4% 4.80 <br /> 4500HB 12/09/2008:215128 CCV units 8.000 101% 95-105 <br /> CCV units 8.000 101% 95-105 <br /> Solids,Total Dissolved 2540 C,E 11/26/2008:212127 Blank mg/L ND <20 <br /> LCS mg/L 995.0 101% 90-110 <br /> LCS mg/L 995.0 99.3% 90-110 <br /> Dup I m 0.2% 10.0 <br /> Sulfate 300.0 11/26/2008:212191 LCS mg/L 50.00 101% 90-110 <br /> MS mg/L 1000 102% 78-137 <br /> (VI 0842854-001) MSD mg/L 1000 103% 78-137 <br /> MSRPD mg/L 100.0 0.1% <_12.3 <br /> LCS mg/L 50.00 102% 90-110 <br /> MS mg/L 1000 104% 78-137 <br /> (VI 0842855-004) MSD mg/L 1000 105% 78-137 <br /> MSRPD mg/L 100.0 1.1% 512.3 <br /> 300.0 11/26/2008:214717 CCB ppm 0.00 2 <br /> CCV ppnt 50.00 101% 90-110 <br /> CCB ppm 0.00 2 <br /> CCV ppm 50.00 105% 90-110 <br /> CCB ppm 0.00 2 <br /> CCV ppm 50.00 105% 90-110 <br /> CCB ppm 0.00 2 <br /> CCV ppm 50.00 102% 90-110 <br /> CCB ppm 0.00 2 <br /> CCV22 <br /> m 50.00 104% 90-110 <br /> Definition <br /> ICV :Initial Calibration Verification-Analyzed to verify the instrument calibration is within criteria. <br /> ICB :Initial 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 /> 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/Sample-Prepared to verify that the preparation process is not affecting analyte recovery. <br /> MS :Matrix Spikes-A random sample is spiked with a known amount of analyte.The recoveries are an indication of how that sample <br /> matrix affects analyte recovery. <br /> MSD :Matrix Spike Duplicate of MS/MSD pair-A random sample duplicate is spiked with a known amount of analyted.The recoveries <br /> are an indication of how that sample matrix affects analyte recovery. <br /> Dup :Duplicate Sample-A random sample with each batch is prepared and analyzed in duplicate.The relative percent difference is an <br /> indication of precision for the preparation and analysis. <br /> MSRPD :MS/MSD Relative Percent Difference(RPD)-The MS relative percent difference is an indication of precision for the preparation <br /> and analysis. <br /> ND :Non-detect-Result was below the DQO listed for the analyte. <br /> DQO :Data Qualitv Objective-This is the criteria against which the quality control data is compared. " <br /> Page 12 of 12 <br /> I <br />