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May 11, 2020 Lab ID : STK2035465 <br /> Mike Thornton Customer : 3-18491 <br /> Quality Control-Enorganic <br /> Constituent Method Date/1D Type Units Conc. QC Data DQO Note <br /> Vet Chem <br /> Alkalinity(as CaCO3) 2320B CC 2081213-003) DUP m L 1,6% 10 <br /> 2320B 05/05/20:207019AMM CCV mg/L 234.9 98.3% 90-110 <br /> CCV m 234.9 97.1% 90-110 <br /> Bicarbonate 2320B (CC 2081213-003) Dup mgrL 1.5% 10 <br /> Carbonate 2320B (CC 2081213-003) Dup m 0.0 10 <br /> Hydroxide 2320B CC 2081213-003) Dup m L 0.0 10 <br /> Nitrate+Nitrite as N 4500NO3F MS nig/l, 28.04 36.7% 5-285 <br /> (CH 2072846-001) MSD mg/L 28.04 37.0% 5-285 <br /> MSRPD mgfL 28.04 0.7% <_30.4 <br /> 4500NO3F 04/28/20:206574VVH CCB mg/1. 0.136 0.2 <br /> CCV nig/L 11.22 93.6% 90-110 <br /> CCB mg/l, 0.195 0.2 <br /> 7tCCV mg/L 1 11.22 1 95.2% 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 lmown 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 /> DQO Data Quality Objective-This is the criteria against which the quality control data is compared. <br /> Page 9 of 9 <br />