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r <br /> k <br /> January 19,2011 Lab ID : STK1130252 <br />' Live Oak Oreo Environmental Customer : 3-16608 <br /> Quality Control -Inorganic <br /> onstituent Method DatellD Type knits Conc. QC Data DQO Note <br /> Wet Chem <br /> Nitrate+Nitrite as N 450ONO3F MS mg/L 4.000 103% 5-285 <br /> (SP 1100258-004) MSD mg/L 4.000 104% 5-285 <br /> MSRPD m L 4.000 0.9% 030.4 <br /> 45WN03F 0111212011:200587 CCB mg/L -0.025 0.1 <br /> CCV mg/L 4.000 98.6% 90-110 <br /> CCS mg/L -0.028 0.1 <br /> CCV m L 4.000 99,6% 90-110 <br /> IDefinition <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 /> 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 /> MSRPD :MS/MSD Relative Percent Difference(RPD)-The MS relative percent difference is an indication of precision for the preparation <br /> and analysis. <br /> D O :Data Quality Objective-This is the criteria a ainst which the quality control data is cam <br /> M <br /> Page 7 of 7 <br />