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• April 3,2018 Lab ID : STK1833740 <br /> Live Oak Geo Environmental Customer : 3-16608 <br /> Quality Control - Inorganic <br /> Constituent Method Date/m Type Units Conc. QC Data DQO Note <br /> Wet Chem <br /> Nitrate+Nitrite as N 450ONO3F MS mg/L 28.04 39.9% 5-285 <br /> (SP 1803899-001) MSD mg/L 28.04 40.9% 5-285 <br /> MSRPD m /L 28.04 2.2% S30.4 <br /> 450ONO3F 03/23/18:204109JDD CCB mg/L 0.086 0.1 <br /> CCV mg/L 11.27 99.5% 90-110 <br /> CCB mg/L. 0.064 0.1 <br /> CCV m /L 11.27 993% 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 /> 11 D O :Data Quality Objective-This is the criteria a ains[which the uality control data is compared. <br /> • <br /> • <br /> Pa e7of7 <br />