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September 18,2020 Lab ID : STK2052594 <br /> Live Oak Geo Environmental Customer : 3-16608 <br /> Quality Control - Inorganic <br /> onsdtoent Method Date/l1) Typc Units Conc. QC Data DQO Note <br /> Wet Chem <br /> itrate+Nitrite as N 450ONO3F 09/03/20:210393VVH Blank mg/L. ND <0.2 <br /> LES mg/L 11.22 100% 80-120 <br /> MS mg/L 5.609 97.0% 5-285 <br /> (SP 2011955-001) MSD mg/L 5.609 97.4% 5-285 <br /> MSRPD mg/L 5.609 0.2% 530.4 <br /> 450ONO3F 09/03/20:214150VVH CCB mg/L. 0.036 0.2 <br /> CCV mg/L 11.22 993% 90-110 <br /> CCB mg/L 0.082 0.2 <br /> CCV m /L 11.22 99.7% 90-110 <br /> itrate Nitrogen 450ONO3F 09/03/20:210393VVH Blank m /L ND <0.2 <br /> Definidon <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 /> Blank :Method Blank-Prepared to verify that the preparation process is not contributing contamination to the samples. <br /> LCS :Laboratory Control Standard/Sample-Prepared to verify that the preparation process is not affecting analyte recovery. <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 analyte.The recoveries <br /> are an indication of how that sample matrix affects analyte recovery. <br /> MSRPD :MS/MSD Relative Percent Difference(RPD)-rhe MS relative percent difference is an indication of precision for the preparation <br /> and analysis. <br /> ND :Non-detect-Result was below the DQO listed for the analyte. <br /> DQO :Data Quality Objective-This is the criteria against which the quality control data is compared. <br /> Page 7 of 7 <br />