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March 15, 2021 Lab ID : STK2132598 <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 />DQO <br />Note <br />Wet Chem <br />mg/L <br />15.00 <br />104% <br />90-110 <br />Nitrate <br />300.0 <br />(VI2141329-002)MSD <br />101% <br />mg/L <br />40.00 <br />94.2% <br />85-119 <br />(VI 2141329-001) <br />MSD <br />mg/L <br />30.00 <br />MSRPD, <br />mg/L <br />10.00 <br />0.2% <br /><19 <br />(VI 2141329-001) <br />MSRPD <br />300.0 <br />02/24/21:202777MCA <br />CCB <br />mg/L <br />0.000 <br />0.5 <br />MS <br />mg/L <br />30.00 <br />CCV <br />mg/L <br />20.00 <br />104% <br />90-110 <br />(VI 2141329-002) <br />MSD <br />1119/1- <br />30.00 <br />CCB <br />mg/L <br />0.078 <br />0.5 <br />(VI 2141329-002) <br />MSRPD <br />mg/L <br />10.00 <br />CCV <br />mg/L <br />20.00 <br />104% <br />90-110 <br />02/24/21:202777MCA <br />Nitrate + Nitrite as N <br />300.0 <br />02/24/21:202081MCA <br />Blank <br />mg/L <br />ND <br /><0.1 <br />02/24/21:202777MCA <br />Nitrate Nitrnoen <br />300.0 <br />02/24/21:202081MCA <br />Blank <br />me/L <br />ND <br />I <0.1 <br />Nitrite <br />300.0 <br />02/24/21:202081MCA <br />Blank <br />mg/L <br />ND <br /><0.5 <br />Sulfate <br />300.0 <br />02/24/21:202081MCA <br />LCs <br />mg/L <br />15.00 <br />104% <br />90-110 <br />MS <br />mg/L <br />30.00 <br />101% <br />74-126 <br />(VI 2141329-001) <br />MSD <br />mg/L <br />30.00 <br />104% <br />74-126 <br />(VI 2141329-001) <br />MSRPD <br />mg/L <br />10.00 <br />2.2% <br /><_20 <br />MS <br />mg/L <br />30.00 <br />102% <br />74-126 <br />(VI 2141329-002) <br />MSD <br />1119/1- <br />30.00 <br />102% <br />74-126 <br />(VI 2141329-002) <br />MSRPD <br />mg/L <br />10.00 <br />0.4% <br /><20 <br />300.0 <br />02/24/21:202777MCA <br />CCB <br />mg/L <br />10.00 <br />0.000 <br />0.5 <br />300.0 <br />02/24/21:202777MCA <br />CCV <br />mg/L <br />15.00 <br />104% <br />90-110 <br />CCB <br />mg/L. <br />50.00 <br />0.000 <br />0.5 <br />CCV <br />m <br />15.00 <br />104% <br />90-110 <br />Nitrite Nitrogen <br />300.0 <br />02/24/21:202081MCA <br />Blank <br />I mg1L <br />ND <br /><0.2 <br />Sulfate <br />300.0 <br />02/24/21:202081MCA <br />Blank <br />mg/L <br />ND <br /><0.5 <br />LCS <br />mg/L <br />50.00 <br />106% <br />90-110 <br />MS <br />mg/L <br />100.0 <br />97.4% <br />82-124 <br />(VI 2141329-001) <br />MSD <br />mg/L <br />100.0 <br />100% <br />82-124 <br />MSRPD <br />mg/L <br />10.00 <br />2.0% <br /><23 <br />MS <br />mg/L <br />100.0 <br />98.8% <br />82-124 <br />(VI 2141329-002) <br />MSD <br />mg/L <br />100.0 <br />99.6% <br />82-124 <br />MSRPD <br />m <br />10.00 <br />0.6% <br /><23 <br />300.0 <br />02/24/21:202777MCA <br />CCB <br />mg/L <br />0.272 <br />0.5 <br />CCV <br />mg/L <br />50.00 <br />105% <br />90-110 <br />CCB <br />mg/L <br />0.301 <br />0.5 <br />CCV <br />m <br />50.00 <br />105% <br />90-110 <br />BAS <br />5540C <br />02/25/21:202911jba <br />CCB <br />mg/L <br />-0.0393 <br />0.25 <br />CCV <br />mg/L <br />1.000 <br />92.8% <br />90-110 <br />CCB <br />mg/L <br />-0.0351 <br />0.25 <br />CCV <br />m <br />1.000 <br />96.1% <br />1 90-110 <br />BAS Extraction <br />5540C <br />02/25/21:202177jba <br />Blank <br />1119/1. <br />ND <br /><0.1 <br />LCS <br />mg/L <br />0.5000 <br />96.1% <br />86-114 <br />BS <br />mg/l, <br />0.5000 <br />96.7% <br />86-114 <br />BSD <br />mg/L <br />0.5000 <br />94.2% <br />86-114 <br />BSRPD <br />m <br />0.5000 <br />0.013 <br /><0.1 <br />Definition <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 />affming analyte recovery. <br />Page 8 of 9 <br />