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March 16, 2022 Lab ID : STK2232853 <br />San Joaquin Co. Environmental Health Dep Customer :3-17919 <br />Quality Control - Inorganic <br />Constituent <br />Method <br />Date/ID <br />Type <br />Units <br />cone. <br />QC Data <br />UQO <br />Note <br />Wet Chem <br />Nitrate <br />300.0 <br />(STK2232783-001) <br />MSD <br />mg/L <br />tniiu <br />��?.7�� <br />85-119 <br />MSRPD <br />m /L <br />I tl <br /><19 <br />300.0 <br />03/01/22:203131njb <br />CCB <br />Ing/1 <br />n.nu <br />0.5 <br />CCV <br />mg/I <br />20.00 <br />1 W, <br />90-110 <br />CCB <br />mg/l <br />O.00 <br />0.5 <br />CCV <br />mg/l <br />20.00 <br />1011/1 <br />90-110 <br />Nitrate + Nitrite as N <br />300.0 <br />03/01/22:202322NJB <br />Blank <br />m <br />ND <br /><0.1 <br />Nitrate Nitrogen <br />300.0 <br />03101/22:202322NJB <br />Blank <br />m <br />ND <br /><0.1 <br />itrite <br />300.0 <br />03/01/22:202322NJB <br />Blank <br />mg/L <br />ND <br /><0.5 <br />LCS <br />mg/L <br />15.00 <br />99.7% <br />90-110 <br />MS <br />mg/L <br />30.00 <br />96.6% <br />74-126 <br />(STK2232761-001) <br />MSD <br />mg/L <br />30.00 <br />104% <br />74-126 <br />MSRPD <br />mg/L <br />10.00 <br />7.0% <br /><20 <br />MS <br />mg/L <br />30.00 <br />99.5 7, <br />74-126 <br />(STK2232783-001) <br />MSD <br />mg/L <br />30.00 <br />102 �'i <br />74-126 <br />MSRPD <br />mg/L <br />10.00 <br />1 2.81< <br /><20 <br />300.0 <br />03/01/22:20313 1 njb <br />CCB <br />mg/1 <br />0.00 <br />0.5 <br />CCV <br />mg/l <br />15.00 <br />10114 <br />90-110 <br />CCB <br />mg/l <br />0.00 <br />0.5 <br />CCV <br />mg1l <br />I x.00 <br />1021,; <br />90-110 <br />Nitrite Nitrogen <br />300.0 <br />03/01/22:202322NJB <br />Blank <br />mg/L <br />NU <br /><0.2 <br />Sulfate <br />300.0 <br />03/01/22:202322NJB <br />Blank <br />mg/L <br />NU <br /><0.5 <br />LCS <br />mg/L <br />50.00 <br />98.7 ii <br />90-110 <br />MS <br />mg/L <br />100.0 <br />90.1 % <br />82-124 <br />(STK2232761-001) <br />MSD <br />mg/L <br />100.0 <br />97.1 % <br />82-124 <br />MSRPD <br />mg/L <br />10.00 <br />6.7% <br /><23 <br />MS <br />mg/L <br />100.0 <br />94.8% <br />82-124 <br />(STK2232783-001) <br />MSD <br />mg/L <br />100.0 <br />98.0% <br />82-124 <br />MSRPD <br />mg/L <br />10.00 <br />2.9% <br />_<23 <br />300.0 <br />03/01/22:203131njb <br />CCB <br />mg/l <br />0.174 <br />0.5 <br />CCV <br />mg/l <br />50.00 <br />101% <br />90-110 <br />CCB <br />mg/1 <br />0.182 <br />0.5 <br />CCV <br />mg/l <br />50.00 <br />101% <br />90-110 <br />BAS <br />5540C <br />03/02/22:203159jba <br />CCB <br />mg/l <br />-0.0611 <br />0.25 <br />CCV <br />mg/l <br />1.000 <br />106% <br />90-110 <br />CCB <br />mg/l <br />-0.0611 <br />0.25 <br />CCV <br />mg/l <br />1.000 <br />105% <br />90-110 <br />BAS Extraction <br />5540C <br />03/02/22:202415jba <br />Blank <br />mg/L <br />ND <br /><0.1 <br />LCS <br />mg/L <br />0.5000 <br />107% <br />86-114 <br />BS <br />mg/L <br />0.5000 <br />100% <br />86-114 <br />BSD <br />mg/L <br />0.5000 <br />102% <br />86-114 <br />BSRPD <br />m L <br />0.5000 <br />1.8%n <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 />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 />BS : Blank Spikes - A blank is spiked with a known amount of analyte. It is prepared to verify that the preparation process is not <br />affecting analyte recovery. <br />Page 8 of 9 <br />