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• October 2,2017 Lab ID : STK1751558 <br /> Live Oak Geo Environmental Customer : 3-16608 <br /> Quality Control - Inorganic <br /> Constituent Method Date/W Typepm.,/,,L <br /> Conc. QC Data DQO Note <br /> Wet Chem <br /> urate+Nitrite as N 450ONO3F Ms 28.04 38.9% 5-285 <br /> (VI 1744719-001) MSD 28.04 39.1% 5-285 <br /> MSRPD 28.04 0.6% 530.4 <br /> 450ONO3F 09/11/17:213637JDD CCB 0.047 0.1 <br /> CCV 11.22 98.9% 90-110 <br /> CCB 0.076 0.1 <br /> CCV m /L 1 11.22 1 993% 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 />