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August 11, 2010 Lab ID : STKIO3671O <br /> Live Oak Geo Environmental Customer : 3-16608 <br /> Quality Control -Inorganic <br /> Constituent Method Date/ID Type Units Cone. QC Data DQO Note <br /> Wet Chem <br /> Nitrate+Nitrite as N 4500NO3F Ms 1119/1- 4.000 98.3% 5-285 <br /> (SP 1007092-002) MSD mg/L 4:000 <br /> 100% 5-285 <br /> MSRPD mg1L 4.000 2.1% <_30.4 <br /> 4500NO3F 08102/2010:209333 CCB mg/L 0.000 0.1 <br /> CCV mg/L. 4.000 92.1% 90-110 <br /> CCB mg/L, O.Ow 0.1 <br /> CCV 4.000 91.7% 90-110 <br /> Definition <br /> CCV :Continuing Calibration Verification-Analyzed to verify the instmmmt 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 is spiked with a known amount of analyzed.The recoveries <br /> are an indication of bow 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 preparation <br /> and analysis. <br /> DQO Data quality Objective-This is the criteria against which the ali control data is ared. <br /> Page 7 of 7 <br />