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March 21, 2014 Lab ID : STK1432127 <br /> Customer : 3-15419 <br /> Chesney Consulting <br /> Quality Control - Inorganic <br /> Method <br /> Date/ID Type Units Conc. QC Data DQO Note <br /> Constituent <br /> et ChemND <0.4 <br /> tiitrate 300.0 03/12/14:202824CHL LCank m� 20.00 104% 90-110 <br /> MS mg/L 400.0 104%0 93-113 <br /> 400.0 103% 93-113 <br /> (STK1432150-001) MSD m� 1000 0.6% �4 <br /> MSRPD mg/L . <br /> MS mg/L 400.0 104% 93-113 <br /> (STK1432127-001) MSD in 400.0 105% 93-113 <br /> MSRPD in <br /> 100.0 1.0% _<4 <br /> 300.0 03/12/14:203616CHL CCV ppm 20.00 107% 90-110 <br /> CCV m 20.00 106% 90-110 <br /> Definition <br /> CCV :Continuing Calibration Verification-Analyzed to verify the instrument calibration is within criteria. <br /> Blank :Method Blank-Prepared to verify that the preparation process is not contributing contamination to the samples. <br /> LCS Laboratory Control Standard/Sample-Prepared to verify that the preparation process is not affecting analyte recovery. <br /> Matrix Spikes-A random sample is spiked with a known amount of analyte.The recoveries are an indication of how that sample <br /> MS matrix affects analyte recovery. <br /> :Matrix Spike Duplicate of MS/MSD pair-A random sample duplicate is spiked with a known amount of analyted.The recoveries <br /> MSD are an indication of how that sample matrix affects analyte recovery. <br /> :MS/MSD Relative Percent Difference(RPD)-The MS relative percent difference is an indication of precision for the preparation <br /> MSRPD and analysis. <br /> Non-detect-Result was below the DQO listed for the analyte. <br /> ND <br /> NDData Quality Ob ective-This is the criteria a ainst which the uality control data is com aced. <br /> DQO <br /> Pane 7 of 7 <br />