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July 10,2009 Lab ID : STK0935751 <br /> Live Oak Geo Environmental Customer : 3-16608 <br /> Quality Control- Inorganic <br /> Constituent Method DatcAD Type Units Cone. QC Data DQO Dote <br /> Wet Chem <br /> Nitrate+Nitrite as N 450ONO3F 0613012009:206796 IVIS mg/L 4.000 104% 5-285 <br /> (CH 0974695-003) MSD mg/L 4.000 109% 5-285 <br /> MSRPD m 1L 4,000 1.7% C30.4 <br /> 45MN03F 06130/2009:208371 CCH mg/L 0,024 0.1. <br /> CCV mg/L 4.000 99.0% 90-110 <br /> CCB mglL 0.015 0.1 <br /> CCV m /L 4.000 96,1% 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 indication of how that sample <br /> matrix affects analyte recovery. <br /> MSD :Matrix Spike Duplicate of MSIMSD pair-A random sample duplicate is spiked with a known amount of analyted.The recoveries <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 preparation <br /> and analysis. <br /> Data Quality Obmective-This is the criteria against which the quality control data is compared. <br /> I <br /> I <br /> I <br /> i <br /> I <br /> Page 7 of 7 <br /> 1 <br />