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December 19, 2011 Lab ID : STK1150686 <br /> Live Oak Geo Environmental Customer : 3-16608 <br /> Quality Control - Inorganic <br /> Constituent Method Date/ID 'type Units Cone. QC Data DQO 1 Note <br /> Wet Chem <br /> Nitrate+Nitrite as N 4500NO3F MS m9/1- 4.000 96.8% 5-285 <br /> (SM 1506854)02) MSD mg/L 4.000 95.3% 5-285 <br /> MSRPD m&fL 4.000 1.1% <_30.4 <br /> 450ONO3F 12/W11218134AMB ICB mg/L -0.016 0.1 <br /> ICV mg/L 4.000 98.7% 90-110 <br /> CCB mg/l. -0.041 0.1 <br /> CCV m 4.000 98.6% 90-110 <br /> Definition <br /> ICV :hutial Calibration Verification-Analyzed to verify(be instrument calibration is within criteria. <br /> ICB :Initial Calibration Blank-Analyzed to verify the instrument baseline is within criteria. <br /> CCV :Continuing Calibration Verificati®-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 a spiked with a known amount of analyted.The recoveries <br /> are an indicatmar of how that sample matrix affects acolyte 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 qualitZ c®uol data is compared. <br /> Page 6 of 6 <br />