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December 7, 2011 Lab ID : STK1150523 <br /> Live Oak Geo Environmental Customer : 3-16608 <br /> Quality Control - Inorganic <br /> onstituent M16od DatdW Type F t;nits Cone. QCData DQO Note <br /> et Chem <br /> Nitrate+Nitrite as 450ONO3F Ms mg/L 4.000 70.3% 5-285 <br /> (CH 1177270-002) MSD - <br /> g/L 4.000 76,5% 5-285 <br /> MSRPD m 4.0008.4% 530.4 <br /> 4500NO3F 12A5/11:217653AMB CCB mg/L -0.006 0.1 <br /> CCV mg/L 4.000 91.3% 90-110 <br /> CCB mg/L -0.006 0.1 <br /> CCV m 4.000 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 todicatlun 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 atnam[of aualyted.The recoveries <br /> are an indication of how that sample matrix affects analyte recovery. <br /> MSRPD MSIMSD Relative Patent Difference(RPD)-The MS relative perc=diffenmce is an indication of precision for the preparation <br /> and analysis. <br /> O :Data ali Ob'ective-This is the criteria a ainst which the ali control data is tom <br /> Page 7 of 7 <br />