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October 14,2013 Lab ID : STK 1339595 <br /> Live Oak Geo Environmental Customer : 3-16608 <br /> Quality Control - Inorganic <br /> Constituent Method Date/ID Type Units Conc. QC Data <br /> DQO Note <br /> Wet Chem <br /> Nitrate+Nitrite as N 450ONO3F MS mg/L 4.000 34.4% 5-285 <br /> (CC 1383593-001) MSD mg/1. 4.000 34.4% 5-285 <br /> MSRPD m /L 4.000 0.03% <30.4 <br /> 4--5WN03F 10/03/13:214784CJJ CCB mg/L0.011 0.1 <br /> CCV mg/L 4.000 108% 90-110 <br /> CCB mg/L -0.067 0.1 <br /> CCV mg/L 4.000 1 108 IY, 90-110 <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 /> 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 /> DQO :Data Quality Objective-This is the criteria against which the quality control data is compared. <br /> Page 7 of 7 <br />