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July 25,2014 Lab ID : STK1436914 <br /> Live Oak Geo Environmental Customer : 3-16608 <br /> Quality Control - Inorganic <br /> Constituent Method Date/ID Type Units Cone. QC Data DQO Note <br /> Wet Chem <br /> Nitrate+Nitrite as N 4500NO3F MS mg/L 1 1.?7 99-5% 5-285 <br /> (STK1436844-001) MSD mg/L 1127 100% 5-285 <br /> MSRPD me/L 11-27 0.6% S30A <br /> 450ONO3F 07111114:210328CJJ CCB mg/L -0.017 0.1 <br /> CCV mg/L 1 1 27 94.8% 90-110 <br /> CCB mg/1- 0.037 0.1 <br /> CCV L 1 1 27 96.014, 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 /> Data Quality Objective-This is the criteria against which the quality control data is cam .red. <br /> `w <br /> Page 7 of 7 <br /> 14.. <br />