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May 25, 2018 Lab ID : STK183.5577 <br /> Jake Desvoignes Customer : 3-17968 <br /> Quality Control - Inorganic <br /> Constituent Method Date/1101 Type Units Colic. QC Dttla DQO Note <br /> Wet Chem <br /> 300.0 05/01/18:205013mca Blank tng/L ND <0.4 <br /> Nitrate LCS mg/L 20-00 105% 90-110 <br /> MS mg/L 40.00 104%a 85 119 <br /> (STK1835300.001) MSD 1111A 40.00 104% 85-119 <br /> MSRPD rug/L 10.00 0.2% <19 <br /> MS ntg/L 40.00 99.9% 85-119 <br /> (STK1835612-001) MSD ntg/L 40.00 100% 85-119 <br /> MSRPD m L 10.00 0.2% <_19 <br /> 300.0 05/01/18:20616INIC.A CCB mg/L 0.000 0.5 <br /> CCV nig/l- 20.00 105% 90-110 <br /> CCB mg/L 0.000 0.5 <br /> CCV mg20.00 105�a 90-110 <br /> Definition <br /> CCV :Continuing Calibration Verificalion-Analyzed to verify the instrument calibration is within <br /> within ccriteria.ria. <br /> CCB :Continuing Calibration Blank-Analyzed to verify the instrument baseline is within <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 MSMSD 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 :MSMSD 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 Qualitv Objective-This is the criteria against which the quality control data is compared. <br /> Page 8 of 8 <br />