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n n <br /> May 11,2011 Lab ID : STK1133373 <br /> Live Oak Geo Environmental Customer : 3-16608 <br /> Quality Control -Inorganic <br /> Constituent Method Date/ID Type Units 1Conc, <br /> QC Data DQO I Note <br /> et Chem <br /> Nitrate t Nitrite as N 450ONO3F MS mg/L 4A00 95.7% 5-285 <br /> (CH 1171723-002) MSD mg/L 4.000 91.6% 5-285 <br /> MSRPD mg/L 4.000 1.7% 40.4 <br /> 450ONO3F 0412517011:20595.3CCB mg1L -0.004 0.1 <br /> CCV mg/L 4.000 104% 90-110 <br /> CCB mg/L -0.003 0.1 <br /> I <br /> ICCV- m 4.000 101 % 90-1,10 <br /> I <br /> Definition <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 /> f 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 /> IMSRPD �MSIMSD Relative Percent Difference(RPD)-The MS relative percent difference is an indication of precision for the preparation <br /> and analysis. <br /> UP-Q0 Data g!!ality Objective-This is the criteria aLyainst which the quality control data is compared. <br /> Page 7 of 7 <br />