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September 1, 2021 Lab ID : STK2151557 <br />Ynez Hernandez Customer :3-18848 <br />Quality Control - Inorganic <br />Constituent <br />Method <br />Date/1D <br />Type <br />Units <br />Conc. <br />QC Data <br />DQO <br />Note <br />Metals <br />Sodium <br />200.7 <br />08/18/21:212822AC <br />CCB <br />Ppm <br />0.04 <br />1 <br />inc <br />200.7 <br />MS <br />ug/L <br />800.0 <br />92.0% <br />75-125 <br />(VI 2146435-001) <br />MSD <br />ug/L <br />800.0 <br />84.7% <br />75-125 <br />MSRPD <br />ug/L <br />4000 <br />7.2% <br /><20.0 <br />200.7 <br />08/18/21:212822AC <br />CCV <br />ppm <br />1.000 <br />101 % <br />90-110 <br />CCB <br />ppm <br />-0.0001 <br />0.02 <br />CCV <br />ppm <br />1.000 <br />101% <br />90-110 <br />CCB <br />ppm <br />-0.00006 <br />1 0.02 <br />Arsenic <br />200.8 <br />MS <br />ug/L <br />5.000 <br />116% <br />75-125 <br />(CC 2182848-001) <br />MSD <br />ug/L <br />5.000 <br />124% <br />75-125 <br />MSRPD <br />u <br />5.000 <br />6.1% <br /><20 <br />200.8 <br />08/18/21:212820AC <br />CCV <br />ppb <br />120.0 <br />97.9% <br />90-110 <br />CCB <br />ppb <br />0.05 <br />1 <br />CCV <br />ppb <br />120.0 <br />99.6% <br />90-110 <br />CCB <br />ppb <br />0.12 <br />1 <br />Wet Chem <br />Alkalinity (as CaCO3) <br />2320B <br />(SP 2111242-001) <br />Du <br />m <br />0.6% <br />10 <br />2320B <br />08/23/21:213101amm <br />CCV <br />mg/l <br />235.8 <br />94.8% <br />90-110 <br />CCV <br />mg/1 <br />235.8 <br />91.2% <br />90-110 <br />Bicarbonate <br />2320B <br />(SP 2111242-001) <br />Du <br />mg/L <br />0.7% <br />10 <br />Carbonate <br />2320B <br />(SP 2111242-001) <br />Du <br />mg/L <br />10 <br />Hydroxide <br />2320B <br />(SP 2111242-001) <br />Du <br />mg/L <br />10 <br />Conductivity <br />2510B <br />08/24/21:213073sta <br />ICB <br />umbos/cm <br />0.130 <br />1 <br />CCV <br />umhos/cm <br />999.0 <br />98.0% <br />95-105 <br />CCV <br />umhos/cm <br />999.0 <br />98.1% <br />95-105 <br />E. C. <br />2510B <br />08/24/21:209694sta <br />Blank <br />umhos/cm <br />ND <br /><1 <br />(SP 2111615-001) <br />Du <br />umhos/cm <br />0.2% <br />5 <br />Total Dissolved Solids (TFR) <br />2540CE <br />08/18/21:20945 1 CTL <br />Blank <br />mg/L <br />ND <br /><20 <br />LCS <br />mg/L <br />991.1 <br />103% <br />90-110 <br />(CC 2182855-001) <br />Dup <br />mg/L <br />0.7% <br />5 <br />(CC 2182855-001) <br />Dup <br />m <br />2.0% <br />5 <br />Chloride <br />300.0 <br />08/17/21:209439NJB <br />Blank <br />mg/L <br />ND <br /><1 <br />LCS <br />mg/L <br />25.00 <br />104% <br />90-110 <br />MS <br />mg/L <br />50.00 <br />101% <br />85-121 <br />(STK2151557-001) <br />MSD <br />mg/L <br />50.00 <br />101% <br />85-121 <br />MSRPD <br />mg/L <br />50.00 <br />0.003% <br /><19 <br />MS <br />mg/L <br />50.00 <br />83.2% <br />85-121 <br />435 <br />(VI 2146474-001) <br />MSD <br />mg/L <br />50.00 <br />82.8% <br />85-121 <br />435 <br />MSRPD <br />mg/L <br />50.00 <br />0.3% <br /><19 <br />300.0 <br />08/17/21:21278ONJB <br />ICB <br />mg/L <br />0.11 <br />1 <br />ICV <br />mg/L <br />25.00 <br />104% <br />90-110 <br />CCB <br />mg/L <br />0.25 <br />1 <br />CCV <br />m <br />25.00 <br />104% <br />90-110 <br />Fluoride <br />300.0 <br />08/17/21:209439NJB <br />Blank <br />mg/L <br />ND <br /><0.1 <br />LCS <br />mg/L <br />2.500 <br />104% <br />90-110 <br />MS <br />mg/L <br />5.000 <br />104% <br />87-120 <br />(STK2151557-001) <br />MSD <br />mg/L <br />5.000 <br />104% <br />87-120 <br />MSRPD <br />mg/L <br />50.00 <br />0.5% <br /><16 <br />MS <br />mg/L <br />5.000 <br />92.6% <br />87-120 <br />(VI 2146474-001) <br />MSD <br />mg/L <br />5.000 <br />91.6% <br />87-120 <br />MSRPD <br />m <br />50.00 <br />1.1% <br /><16 <br />300.0 <br />08/17/21:21278ONJB <br />ICBmg/L <br />0.000 <br />0.1 <br />ICVTmg/L <br />mg/L <br />2.500 <br />105% <br />90-110 <br />CCB0.012 <br />0.1 <br />Page 7 of 9 <br />