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July 22, 2020 Lab ID : STK2039628 <br /> Don Chesney Customer : 3-14658 <br /> Quality Control - Inorganic <br /> Constituent Method Date/1D Type Units Conc. QC Data DQO Note <br /> Wet Chem <br /> Alkalinity(as CaCO3) 2320B (VI 2045306-012) Dup mg/L 0.2% 10 <br /> 2320B 07/13/20:211019AMM CCV mg/L 235.8 96.8% 90-110 <br /> CCV I mJL 235.8 98.6% 90-110 <br /> Bicarbonate 2320B (VI 2045306-012) Dup mg/L 0.2% 10 <br /> Carbonate 2320B (VI 2045306-012) Dup mg/L 0.0 10 <br /> Hydroxide 2320B (VI 2045306-012) Dup mg/L 0.0 10 <br /> pH 4500-H B (STK2039628-001) Dup units 0.0% 4.80 <br /> 4500HB 07/09/20:31207OBCK CCV units 8.00 99.% 95-105 <br /> CCV units 8.00 99.8% 95-105 <br /> Nitrate+Nitrite as N 450ONO3F 07/10/20:207931 VVH Blank mg/L ND <0.2 <br /> LCS mg/L 11.22 97.4% 80-120 <br /> MS mg/L 5.609 96.5% 5-285 <br /> (SP 2009023-001) MSD mg/L 5.609 98.8% 5-285 <br /> MSRPD mg/L 5.609 2.2% :530.4 <br /> 4500NO3F 07/10/20:210848VVH CCB mg/L 0.061 0.2 <br /> CCV mg/L 11.22 96.6% 90-110 <br /> CCB mg/L 0.066 0.2 <br /> CCV mg/L 11.22 96.5% 90-110 <br /> Nitrate Nitro,gen 450ONO3F I 07/10/20207931 VVH I Blank mg/L ND <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 /> 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 analyte.The recoveries <br /> are an indication of how that sample matrix affects analyte recovery. <br /> Dup :Duplicate Sample-A random sample with each batch is prepared and analyzed in duplicate.The relative percent difference is an <br /> indication of precision for the preparation and analysis. <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 /> 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 />