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• August 30,2018 Lab ID : STKI851207 <br /> Live Oak Geo Environmental Customer : 3-16608 <br /> Quality Control - Inorganic <br /> Constituent Method Date/1D Type Units Cone. QC Data DQO Note <br /> Wet Chem <br /> Nitrate+Nitrite as N 450ONO3F MS mg/L 28.17 39.1 % 5-285 <br /> (SP 1810235-001) MSD mg/L 28.17 39.9% 5-285 <br /> MSRPD mg/L 28.17 1.7% <30.4 <br /> 450ONO3F 08/07/18:211440JDD CCB mg/L 0.092 0.2 <br /> CCV mg/L 11.27 104% 90-110 <br /> CCB mg/L 0.142 0.2 <br /> CCV I m /L 1 11.27 1 102% 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 /> • <br /> • <br /> Page 7 of 7 <br />