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September 11,2019 Lab ID : STK1952930 <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 /> Nitrate 300.0 08/31/19:210121JMR Blank mg/L ND <0.4 <br /> LES mg/L 20.00 105% 90-110 <br /> MS mg/L 40.00 102% 85-119 <br /> (STK1952930-001) MSD mg/L 40.00 102% 85-119 <br /> MSRPD m /L 10.00 0.03% :519 <br /> 300.0 08/31/19:213696JMR ICB mg/l, 0.000 0.5 <br /> ICV mg/L 20.00 104% 90-110 <br /> CCB mg/L 0.054 0.5 <br /> CCV m /L 20.00 103% 90-110 <br /> urate Nitrogen 300.0 08/31/19:210121JMR Blank m /L ND <0.1 <br /> Definition <br /> ICV :Initial Calibration Verification-Analyzed to verify the instrument calibration is within criteria. <br /> ICB :Initial Calibration Blank-Analyzed to verify the instrument baseline is within criteria. <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 />