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December 21, 2012 Lab ID : STK1251245 <br /> Live Oak Geo Environmental Customer : 3-16608 <br /> Quality Control-Inorganic <br /> Constituent Med..d DatefM Type Units Cone. QC.Data DQO Note <br /> N Chem <br /> Nitrate+ Nitrite as N 4500NMF MS mg/L 4,000 66.0% 5-285 <br /> (CH 1277-773-001) MSD mg/L 4.000 52.5% 5-285 <br /> MSRPD MVL 4.000 23.2% !J 0.4 <br /> 450ONO3F 12110/12:218152AMB CCB mgiL -0.016 0.1 <br /> CCv mg/L 4.000 97.1% 90-110 <br /> CCB mg/1. -0.015 0.1 <br /> CCV I rutot 1 4.000 1 92.8% 90-110 <br /> DCanHtnn <br /> CCV :Continuing Calibration Verificatim-Analyzed in verify,the instrument calibration u within criteria <br /> CCB :Continuing Calibration Blank-Analyzed to vilify the instrument baseline is within criteria. <br /> MS :Manx 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 pan-A random sample duplicate is spiked with a known amamt of analyted.The recuve ies <br /> are an indication ofhow that sample matrix afrects analyte recovery. <br /> MSRPD :MS/MSD Relative Percent Difference(RPD)-The MS relative Percent difference is an indication of precision fer the preparation <br /> and analysis. <br /> Data Ouality Ob' - e-This is the criteria missing which the"dy control data is <br /> Page 7 ,1'7 <br />