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November 3, 2009 Lab ID : STK0939912 <br /> Live Oak Geo Environmental Customer : 3-16608 <br /> Quality Control-Inorganic <br /> Constituent Method Date/W Type Units Cone. QC Data DQO Note <br /> Wet Chem <br /> Nitrate r Nitrite as N 4500NO3F 10/28/2009:211304 MS mg/L 4-000 96.5% 5-285 <br /> (CH 0977914-002) MSD mg/L 4,000 77.7% 5-285 <br /> MSRPD mi& 4-000 10.9% <i0.4 <br /> 450ONO3F 10/2&2009:214080 CCB mg/L 0.0003 0.1 <br /> CCV mg/L 4,000 95.5% 90-110 <br /> CCB mg/L -0014 0-1 <br /> CCV I m 4.000 1 92.2% 90-110 <br /> De6rntian <br /> CCV :Continuing Calibration Verification-Analyzed to verify the insrrtanent calibration is within criteria. <br /> CCB :Continuing Calibration Blank-Analyzed to vorify the instrument baseline is within criteria. <br /> M. 5 :Matrix Spikes-A random sample is spiked with a known amount of analyte.The recoveries are an indication of how that sample <br /> matrix affecta analyte recovery. <br /> MSD :Matrix Spike Duplicate of MS/MSD pair-A random sample duplicate is spiked with a known amount of aualyted.The recoveries <br /> are an htdicaton of how that sample matrix affects analyte recovery. <br /> M3RPD :MS/MSD Relative percent Difference(RPD)-The MS relative percent difference is an indication of precision for the preparation <br /> and analysis. <br /> D O =Data Ob'eenve-This is the criteria a ainst which thequality control data is con ed. <br /> ?age 9 of 9 <br />