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August 31,2020 Lab ID : STK2O51980 <br /> Live Oak Geo Environmental Customer : 3-16608 <br /> Quality Control - Inorganic <br /> Constituent Method Date/ID Type Units Conc. QC Data DQO Note <br /> Wet Chem <br /> itrate+Nitrite as N 4500NO3F 08/20/20:209735VVH Blank mg/L ND <0.2 <br /> LES mg/L 11.22 100% 80-120 <br /> Ms mg/L 5.609 97.5% 5-285 <br /> (VI2046356-001) MSD mg/L 5.609 99.1% 5-285 <br /> MSRPD mg/L 5.609 1.4% <30A <br /> 4500NO3F 08/20/20:213260VVH CCB mg/L 0.139 0.2 <br /> CCV mg/L 11.22 101% 90-110 <br /> CCB mg/L 0.078 0.2 <br /> CCV I mg/L 1 11.22 1 102% 1 90-110 <br /> itrate Nitrogen 4500NO3F 08/20/20:209735VVH I Blank I mg/L I I ND 1 d)? <br /> DeSnition <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)-The 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 />