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April 13, 2022 Lab ID : STK223427O <br />San Joaquin Co. Environmental Health Dep Customer :3-17919 <br />Quality Control - Inorganic <br />Constituent <br />b9ethod <br />Date/11) <br />Type <br />Units <br />Conc. <br />QC Data <br />DQO <br />Note <br />Metals <br />Sodium <br />200.7 <br />03/31/22:204655AC <br />CCB <br />PPM <br />0.02 <br />l <br />Zinc <br />200.7 <br />MS <br />ug/L <br />800.0 <br />94.1% <br />75-125 <br />(SP 2205077-001) <br />MSD <br />ug/L <br />800.0 <br />92.7% <br />75-125 <br />MSRPD <br />u <br />4000 <br />1.4% <br /><20.0 <br />200.7 <br />03131/22:204655AC <br />CCV <br />ppm <br />1.000 <br />90.7% <br />90-110 <br />CCB <br />ppm <br />0.0007 <br />0.02 <br />CCV <br />ppm <br />1.000 <br />102% <br />90-110 <br />CCB <br />ppm <br />0.0001 <br />0.02 <br />Wet Chem <br />Alkalinity (as CaCO3) <br />2320B <br />(SP 2205063-001) <br />Dup <br />mg/L <br />0.7% <br />10 <br />2320B <br />04/11/22:205183AMM <br />CCV <br />mg/l <br />235.8 <br />103% <br />90-110 <br />CCV <br />mg/l <br />235.8 <br />104% <br />90-110 <br />Bicarbonate <br />2320B <br />(SP 2205063-001) <br />Dup <br />m <br />0.7% <br />10 <br />Carbonate <br />2320B <br />(SP 2205063-001) <br />Dup <br />m <br />10 <br />Hydroxide <br />2320B <br />(SP 2205063-001) <br />Dup <br />m <br />10 <br />Conductivity <br />2510B <br />04/05/22:204780sta <br />ICB <br />umhos/cm <br />0.0900 <br />l <br />CCV <br />umhos/cm <br />997.0 <br />100% <br />95-105 <br />CCV <br />umhos/cm <br />997.0 <br />99.9% <br />95-105 <br />E. C. <br />2510B <br />04/05/22:203668sta <br />Blank <br />umhos/cm <br />ND <br /><1 <br />(STK2234270-001) <br />Dup <br />umhos/cm <br />0.3% <br />5 <br />Total Dissolved Solids (TFR) <br />2540CE <br />04/01/22:203570CTL <br />Blank <br />mg/L <br />ND <br /><20 <br />LCS <br />mg/L <br />990.8 <br />101% <br />90-110 <br />(SP 2205139-001) <br />Dup <br />mg/L <br />0.9% <br />5 <br />(SP 2205139-001) <br />Dup <br />m <br />1.7% <br />5 <br />Chloride <br />300.0 <br />03/31/22:203511NJB <br />Blank <br />mg/L <br />ND <br /><1 <br />LCS <br />mg/L <br />25.00 <br />97.8% <br />90-110 <br />MS <br />mg/L <br />50.00 <br />93.0% <br />85-121 <br />(STK2234058-001) <br />MSD <br />mg/L <br />50.00 <br />99.9% <br />85-121 <br />MSRPD <br />mg/L <br />10.00 <br />5.7% <br />:519 <br />MS <br />mg/L <br />50.00 <br />93.5% <br />85-121 <br />(STK2234191 -00 1) <br />MSD <br />mg/L <br />50.00 <br />99.5% <br />85-121 <br />MSRPD <br />m <br />10.00 <br />5.8% <br />1 <19 <br />300.0 <br />03/31/22:204662njb <br />ICB <br />mg/l <br />0.0900 <br />1 <br />ICV <br />mg/l <br />25.00 <br />99.9% <br />90-110 <br />CCB <br />mg/1 <br />0.102 <br />l <br />CCV <br />mg/l <br />25.00 <br />100% <br />90-110 <br />Fluoride <br />300.0 <br />03/31/22:20351INJB <br />Blank <br />mg/L <br />ND <br /><0.1 <br />LCS <br />mg/L <br />2.500 <br />98.2% <br />90-110 <br />MS <br />mg/L <br />5.000 <br />97.3% <br />87-120 <br />(STK2234058-001) <br />MSD <br />mg/L <br />5.000 <br />104% <br />87-120 <br />MSRPD <br />mg/L <br />10.00 <br />6.4% <br />:516 <br />MS <br />mg/L <br />5.000 <br />95.4% <br />87-120 <br />(STK2234191 -00 1) <br />MSD <br />mg/L <br />5.000 <br />101% <br />87-120 <br />MSRPD <br />mg/L <br />10.00 <br />5.7% <br /><16 <br />300.0 <br />03/31/22:204662njb <br />ICB <br />mg/l <br />0.00 <br />0.1 <br />ICV <br />mg/l <br />2.500 <br />101% <br />90-110 <br />CCB <br />mg/l <br />0.00 <br />0.1 <br />CCV <br />mg/l <br />2.500 <br />101% <br />90-110 <br />Nitrate <br />300.0 <br />03/31/22:203511NJB <br />Blank <br />mg/L <br />ND <br /><0.4 <br />LCS <br />mg/L <br />20.00 <br />96.8% <br />90-110 <br />MS <br />mg/L <br />40.00 <br />93.2% <br />85-119 <br />(STK2234058-001) <br />MSD <br />mg/L <br />40.00 <br />100% <br />85-119 <br />MSRPD <br />mg/L <br />10.00 <br />5.4% <br />:519 <br />MS <br />I mg/L <br />1 40.00 <br />1 94.4% <br />1 85-119 <br />Page 8 of 10 <br />