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July 31,2013 Lab ID : STK1337290 <br /> Live Oak Geo Environmental Customer : 3-16608 <br /> Quality Control - Inorganic <br /> Constituent Method Date/ID 'fvpc Units on, Q( Data I)QO No <br /> N Chem <br /> Nitrate+Nitrite as 4500NH3G 07/22/13210541AMB CCB ntg�L 0.006 0.1 <br /> CCV mg/L 4.000 104% 90-110 <br /> CCB mg/L -0.015 0.1 <br /> CCV m 4.000 105% 90.110 <br /> 450ONO3F MS mg/L 4.000 90.9% 5.285 <br /> (S'I'K1336940-001) MSD mg/L 4.000 91.7% 5-285 <br /> MSRPD nt /L 4.0(X1 0.9% <f0A <br /> DeBottion <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 surnplc <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 mcovct es <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 prepamuon <br /> and analysis. <br /> :Data ali Ob'cctive-This is the criterianeinst which the uuli� control d;un is cora ared. <br /> Pace 7 of 7 <br />