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July 22, 2020 Lab ID : STK2039628 <br />Don Chesney Customer :3-14658 <br />Quality Control - Inorganic <br />Constituent <br />Method <br />Date/1D <br />Type <br />Units <br />Conc. <br />QC Data <br />DQO <br />Note <br />Wet Chem <br />Alkalinity (as CaCO3) <br />2320B <br />(VI 2045306-012) <br />Dup <br />mg/L <br />0.2% <br />10 <br />2320B <br />07/13/20:211019AMM <br />CCV <br />mg/L <br />235.8 <br />96.8% <br />90-110 <br />CCV <br />mg/L <br />235.8 <br />98.6% <br />90-110 <br />Bicarbonate <br />2320B <br />(VI 2045306-012) <br />Dup <br />mg/L <br />0.2% <br />10 <br />Carbonate <br />2320B <br />(VI 2045306-012) <br />Dup <br />mg/L <br />0.0 <br />10 <br />Hydroxide <br />2320B <br />(VI 2045306-012) <br />Dup <br />mg/L <br />0.0 <br />10 <br />pH <br />4500-H B <br />(STK2039628-001) <br />Dup <br />units <br />0.0% <br />4.80 <br />4500HB <br />07/09/20:31207OBCK <br />CCV <br />units <br />8.00 <br />99.% <br />95-105 <br />CCV <br />units <br />8.00 <br />99.8% <br />95-105 <br />Nitrate + Nitrite as N <br />450ONO3F <br />07/10/20:207931 VVH <br />Blank <br />mg/L <br />ND <br /><0.2 <br />LCS <br />mg/L <br />11.22 <br />97.4% <br />80-120 <br />MS <br />mg/L <br />5.609 <br />96.5% <br />5-285 <br />(SP 2009023-001) <br />MSD <br />mg/L <br />5.609 <br />98.8% <br />5-285 <br />MSRPD <br />mg/L <br />5.609 <br />2.2% <br />:530.4 <br />4500NO3F <br />07/10/20:210848VVH <br />CCB <br />mg/L <br />0.061 <br />0.2 <br />CCV <br />mg/L <br />11.22 <br />96.6% <br />90-110 <br />CCB <br />mg/L <br />0.066 <br />0.2 <br />CCV <br />mg/L <br />11.22 <br />96.5% <br />90-110 <br />Nitrate Nitro,gen <br />450ONO3F <br />I 07/1 0/2020793 1 VVH <br />I Blank <br />mg/L <br />ND <br /><0.2 <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 />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 <br />matrix affects analyte recovery. <br />: Matrix Spike Duplicate of MS/MSD pair - A random sample duplicate is spiked with a known amount of analyte. The recoveries <br />MSD <br />are an indication of how that sample matrix affects analyte recovery. <br />: Duplicate Sample - A random sample with each batch is prepared and analyzed in duplicate. The relative percent difference is an <br />Dup <br />indication of precision for the preparation and analysis. <br />: MS/MSD Relative Percent Difference (RPD) - The MS relative percent difference is an indication of precision for the preparation <br />MSRPD <br />and analysis. <br />ND : Non -detect - Result was below the DQO listed for the analyte. <br />DQO Data Quality Objective - This is the criteria against which the quality control data is compared. <br />Page 9 of 9 <br />