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April 1,2016 Lab ID : STK1633095 <br /> Live Oak Geo Environmental Customer : 3-16608 <br /> Quality Control - Inorganic <br /> Constituent Method Date/11) [y,pe Units Cone. QC Data DQO Note <br /> Wet Chem <br /> Nitrate+Nitrite as N 450ONO3F MS mg/L 11.27 973% 5-285 <br /> (CC 1680876-001) MSD mg/L 11.27 963% 5-285 <br /> MSRPD m /L 11.27 0.6% 530.4 <br /> 450ONO3F 03/23/16:204103NMRP CCB mg/L 0.018 0.1 <br /> CCV mg/L 11.27 95.0% 90-110 <br /> CCB mg/L 0.043 0.1 <br /> CCV I m /L 1 11.27 1 96.2% 1 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 />