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September 16,2015 Lab ID : STK1539475 <br /> Live Oak Geo Environmental Customer : 3-16608 <br /> Quality Control-Inorganic <br /> Constituent Method Date/m LCCB <br /> Units Cone. QC Data DQO Note <br /> Wet Chem <br /> urate+Nitrite as N 450ONO3F mg/L 11.27 79.6% 5-285 <br /> (VI 1543424-001) mg/L 11.27 83.1% 5-285 <br /> m 11.27 3.5% 530.4 <br /> 450ONO3F 08/26115:212575CJJmg/L OA18 0.1 <br /> mg/L 11.27 95.2% 90-110 <br /> mg/L OA20 0.1 <br /> m L 11.27 961% 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 anti yted.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 /> D20 :Data Quality Objective-This is the criteria against which the quality control data is compared. <br /> Page 7 of 7 <br />