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January 28, 2022 Lab ID : STK223O464 <br />San Joaquin Co. Environmental Health Dep Customer :3-17919 <br />Quality Control - Inorganic <br />Constituent <br />Method <br />Date/1D <br />Type <br />Units <br />Cone. <br />QC Data <br />DQO <br />Note <br />Wet Chem <br />Nitrate <br />300.0 <br />(VI 2240060-001) <br />MSD <br />mg/L <br />40.00 <br />100% <br />85-119 <br />MSRPD <br />m <br />10.00 <br />2.9% <br /><19 <br />300.0 <br />0 1/1 1/22:200598njb <br />CCB <br />mg/I <br />0.00 <br />0.5 <br />CCV <br />mg/I <br />20.00 <br />103% <br />90-110 <br />CCB <br />mg/I <br />0.00 <br />0.5 <br />CCV <br />mg/I <br />20.00 <br />102% <br />90-110 <br />Nitrate + Nitrite as N <br />300.0 <br />01/11/22:200350NJB <br />Blank <br />mg/L <br />ND <br /><0.1 <br />Nitrate Nitrogen <br />300.0 <br />01/11/22:200350NJB <br />Blank <br />mg/L <br />ND <br /><0.1 <br />itrite <br />300.0 <br />01/11/22:200350NJB <br />Blank <br />mg/L <br />ND <br /><0.5 <br />LCS <br />mg/L <br />15.00 <br />100% <br />90-110 <br />MS <br />mg/L <br />30.00 <br />93.6% <br />74-126 <br />(STK2230261-001) <br />MSD <br />mg/L <br />30.00 <br />107% <br />74-126 <br />MSRPD <br />mg/L <br />10.00 <br />13.6% <br /><_20 <br />MS <br />mg/L <br />30.00 <br />97.3% <br />74-126 <br />(VI 2240060-001) <br />MSD <br />mg/L <br />30.00 <br />101% <br />74-126 <br />MSRPD <br />mg/L <br />10.00 <br />3.9% <br />1 <20 <br />300.0 <br />01/ 11/22:200598njb <br />CCB <br />mg/l <br />0.0520 <br />0.5 <br />CCV <br />mg/l <br />15.00 <br />103% <br />90-110 <br />CCB <br />mg/l <br />0.0520 <br />0.5 <br />CCV <br />mg/1 <br />15.00 <br />101% <br />90-110 <br />Nitrite Nitrogen <br />300.0 <br />01/11/22:200350NJB <br />Blank <br />mg/L <br />ND <br /><0.2 <br />Sulfate <br />300.0 <br />01/11/22:200350NJB <br />Blank <br />mg/L <br />ND <br /><0.5 <br />LCS <br />mg/L <br />50.00 <br />107% <br />90-110 <br />MS <br />mg/L <br />100.0 <br />94.9% <br />82-124 <br />(STK2230261-001) <br />MSD <br />mg/L <br />100.0 <br />109% <br />82-124 <br />MSRPD <br />mg/L <br />10.00 <br />12.6% <br /><_23 <br />MS <br />mg/L <br />100.0 <br />97.2% <br />82-124 <br />(VI 2240060-001) <br />MSD <br />mg/L <br />100.0 <br />101% <br />82-124 <br />MSRPD <br />mg/L <br />10.00 <br />3.4% <br /><23 <br />300.0 <br />01 / 11 /22:200598njb <br />CCB <br />mg/1 <br />0.147 <br />0.5 <br />CCV <br />mg/I <br />50.00 <br />110% <br />90-110 <br />CCB <br />mg/1 <br />0.145 <br />0.5 <br />CCV <br />mg/l <br />50.00 <br />109% <br />90-110 <br />Mi3AS <br />5540C <br />01/11/22:200918amm <br />CCB <br />mg/l <br />-0.0611 <br />0.25 <br />CCV <br />mg/1 <br />1.000 <br />104% <br />90-110 <br />CCB <br />mg/l <br />-0.0524 <br />0.25 <br />CCV <br />I mg/I <br />1.000 <br />103% <br />1 90-110 <br />BAS Extraction <br />5540C <br />0 1/] 1/22:20070 ljba <br />Blank <br />mg/L <br />ND <br /><0.1 <br />LCS <br />mg/L <br />0.5000 <br />104% <br />86-114 <br />BS <br />mg/L <br />0.5000 <br />108% <br />86-114 <br />BSD <br />mg/L <br />0.5000 <br />108% <br />86-114 <br />BSRPD <br />mg/L <br />0.5000 <br />0.4% <br /><5 <br />Definition <br />ICV : Initial Calibration Verification - Analyzed to verify the instrument calibration is within criteria. <br />ICB : Initial Calibration Blank - Analyzed to verify the instrument baseline is within criteria. <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 />: Blank Spikes - A blank is spiked with a known amount of analyte. It is prepared to verify that the preparation process is not <br />BS <br />affecting analyte recovery. <br />Page 8 of 9 <br />