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December 14, 2021 Lab ID : STK2156699 <br />San Joaquin Co. Environmental Health Dep Customer :3-17919 <br />Quality Control - Inorganic <br />Constituent <br />Method <br />Date/11) <br />Type <br />Units <br />Conc. <br />QC Data <br />DQO <br />Note <br />Metals <br />Sodium <br />200.7 <br />11/21/21:219187AC <br />CCB <br />ppm <br />0.02 <br />1 <br />inc <br />200.7 <br />MS <br />ug/L <br />800.0 <br />104% <br />75-125 <br />(STK2156762-001) <br />MSD <br />ug/L <br />800.0 <br />102% <br />75-125 <br />MSRPD <br />u /L <br />800.0 <br />1.6% <br />520.0 <br />200.7 <br />11/21/21:218187AC <br />CCV <br />ppm <br />1.000 <br />104% <br />90-110 <br />CCB <br />ppm <br />0.0002 <br />0.02 <br />CCV <br />ppm <br />1.000 <br />103% <br />90-110 <br />CCB <br />ppm <br />0.0002 <br />0.02 <br />Wet Chem <br />Alkalinity (as CaCO3) <br />23206 <br />(SP 2116609-001) <br />Du <br />mg/L <br />0.3% <br />10 <br />2320B <br />11/30/21:218583AMM <br />CCV <br />mg/L <br />235.8 <br />97.7% <br />90-110 <br />CCV <br />mg/L <br />235.8 <br />95.1 % <br />90-110 <br />Bicarbonate <br />2320B <br />(SP 2116609-001) <br />Du <br />m /L <br />0.3% <br />10 <br />Carbonate <br />2320B <br />(SP 2116609-001) <br />Dup <br />mg/L <br />0.0 <br />10 <br />Hydroxide <br />2320B <br />(SP 2116609-001) <br />Du <br />mg/L <br />0.0 <br />10 <br />Conductivity <br />2510B <br />11/23/21:218261sta <br />ICB <br />umbos/cm <br />0.0800 <br />1 <br />CCV <br />umhos/cm <br />999.0 <br />97.1% <br />95-105 <br />CCV <br />umbos/cm <br />999.0 <br />96.9% <br />95-105 <br />E. C. <br />2510B <br />11/23/21:213647sta <br />Blankhos/cm <br />um <br />ND <br /><1 <br />(STK215642 1 -00 1) <br />Dup <br />umhos/cm <br />0.3% <br />5 <br />Total Dissolved Solids (TFR) <br />2540CE <br />11/19/21:213502CTL <br />Blank <br />mg/L <br />ND <br /><20 <br />LCS <br />mg/L <br />991.2 <br />100% <br />90-110 <br />(CH 2179429-002) <br />Dup <br />mg/L <br />0.7% <br />5 <br />(CH 2179429-002) <br />Dup <br />mg/L <br />1.3% <br />5 <br />Chloride <br />300.0 <br />11/18/21:213493NJB <br />Blank <br />mg/L <br />ND <br /><1 <br />LCS <br />mg/L <br />25.00 <br />100% <br />90-110 <br />MS <br />mg/L <br />50.00 <br />95.2% <br />85-121 <br />(STK2156762-001) <br />MSD <br />mg/L <br />50.00 <br />103% <br />85-121 <br />MSRPD <br />mg/L <br />10.00 <br />6.8% <br />5519 <br />MS <br />mg/L <br />50.00 <br />91.1% <br />85-121 <br />(STK2156699-001) <br />MSD <br />mg/L <br />50.00 <br />97.2% <br />85-121 <br />MSRPD <br />mg/L <br />10.00 <br />4.8% <br />5_19 <br />300.0 <br />11/19/21:218242njb <br />CCB <br />mg/l <br />0.0810 <br />1 <br />CCV <br />mg/l <br />25.00 <br />99.9% <br />90-110 <br />CCB <br />mg/l <br />0.0800 <br />1 <br />CCV <br />mg1l <br />25.00 <br />100% <br />90-110 <br />Fluoride <br />300.0 <br />11/18/21:213493NJB <br />Blank <br />mg/L <br />ND <br /><0.1 <br />LCS <br />mg/L <br />2.500 <br />98.4% <br />90-110 <br />Ms <br />mg/L <br />5.000 <br />96.5% <br />87-120 <br />(STK2156762-001) <br />MSD <br />mg/L <br />5.000 <br />104% <br />87-120 <br />MSRPD <br />mg/L <br />10.00 <br />7.3% <br />516 <br />MS <br />mg/L <br />5.000 <br />95.3% <br />87-120 <br />(STK2156699-001) <br />MSD <br />mg/L <br />5.000 <br />101% <br />87-120 <br />MSRPD <br />mg/L <br />10.00 <br />6.0% <br />5_16 <br />300.0 <br />11/19/21:218242njb <br />CCB <br />mg/1 <br />0.00 <br />0.1 <br />CCV <br />mg/l <br />2.500 <br />99.6% <br />90-110 <br />CCB <br />mg/l <br />0.00 <br />0.1 <br />CCV <br />mg/1 <br />2.500 <br />99.5% <br />90-110 <br />Nitrate <br />300.0 <br />11/18/21:213493NJB <br />Blank <br />mg/L <br />ND <br /><0.4 <br />LCS <br />mg/L <br />20.00 <br />99.1% <br />90-110 <br />MS <br />mg/L <br />40.00 <br />96.4% <br />85-119 <br />(STK2156762-001) <br />MSD <br />mg/L <br />40.00 <br />104% <br />85-119 <br />MSRPD <br />mg/L <br />10.00 <br />6.8% <br />519 <br />MS <br />I mg/L <br />1 40.00 <br />1 93.4% <br />1 85-119 <br />Page 7 of 9 <br />