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March 16, 2022 Lab ID : STK2232501 <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 />Metals <br />Sodium <br />200.7 <br />02/21/22:202750AC <br />CCB <br />ppm <br />0.01 <br />l <br />inc <br />200.7 <br />MS <br />ug/L <br />800.0 <br />90.1 % <br />75-125 <br />(SP 2202756-001) <br />MSD <br />ug/L <br />800.0 <br />81.0% <br />75-125 <br />MSRPD <br />ug/L <br />4000 <br />10.6% <br /><20.0 <br />200.7 <br />02/21/22:202750AC <br />CCV <br />ppm <br />1.000 <br />104% <br />90-110 <br />CCB <br />ppm <br />-0.0003 <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 />2320B <br />(SP 2202665-001) <br />Dup <br />mg/L <br />1.3% <br />10 <br />23206 <br />02/23/22:202757AMM <br />CCV <br />mg/L <br />235.8 <br />94.9% <br />90-110 <br />CCV <br />mg/L <br />235.8 <br />93.1 % <br />90-1 l0 <br />Bicarbonate <br />2320B <br />(SP 2202665-001) <br />Dup <br />mg/L <br />1.3% <br />10 <br />Carbonate <br />2320B <br />(SP 2202665-001) <br />Dup <br />mg/L <br />0.0 <br />10 <br />Hydroxide <br />2320B <br />(SP 2202665-001) <br />Dup <br />mg/L <br />0.0 <br />10 <br />Conductivity <br />2510B <br />02/22/22:202687sta <br />ICB <br />umhos/cm <br />0.0900 <br />1 <br />CCV <br />umhos/cm <br />997.0 <br />96.9% <br />95-105 <br />CCV <br />umhos/cm <br />997.0 <br />95.9% <br />95-105 <br />E. C. <br />2510B <br />02/22/22:202049sta <br />Blank <br />umhos/cm <br />ND <br /><1 <br />(STK2232345-001) <br />Dup <br />umhos/cm <br />0.3% <br />5 <br />Total Dissolved Solids (TFR) <br />2540CE <br />02/21/22:202002CTL <br />Blank <br />mg/L <br />ND <br /><20 <br />LCS <br />mg/L <br />991.0 <br />102% <br />90-110 <br />(CC 2280595-001) <br />Dup <br />mg/L <br />2.0% <br />5 <br />(CC 2280595-001) <br />Dup <br />mg/L <br />0.5% <br />5 <br />hloride <br />300.0 <br />02/18/22:201895NJB <br />Blank <br />mg/L <br />ND <br /><l <br />LCS <br />mg/L <br />25.00 <br />101 % <br />90-110 <br />MS <br />mg/L <br />50.00 <br />92.4% <br />85-121 <br />(CH 2271062-001) <br />MSD <br />mg/L <br />50.00 <br />95.3% <br />85-121 <br />MSRPD <br />mg/L <br />10.00 <br />1.6% <br />519 <br />MS <br />mg/L <br />50.00 <br />87.8% <br />85-121 <br />(CH 2271063-001) <br />MSD <br />mg/L <br />50.00 <br />95.7% <br />85-121 <br />MSRPD <br />mg/L <br />10.00 <br />4.7% 1 <br /><19 <br />300.0 <br />02/18/22:202556njb <br />CCB <br />mg/l <br />0.0810 <br />1 <br />CCV <br />mg/l <br />25.00 <br />102% <br />90-110 <br />CCB <br />mg/l <br />0.0780 <br />1 <br />CCV <br />mg/l <br />25.00 <br />103% <br />90-110 <br />Fluoride <br />300.0 <br />02/18/22:201895NJB <br />Blank <br />mg/L <br />ND <br /><0.1 <br />LES <br />mg/L <br />2.500 <br />101% <br />90-110 <br />MS <br />mg/L <br />5.000 <br />103% <br />87-120 <br />(CH 2271062-001) <br />MSD <br />mg/L <br />5.000 <br />106% <br />87-120 <br />MSRPD <br />mg/L <br />10.00 <br />2.5% <br /><I6 <br />MS <br />mg/L <br />5.000 <br />96.0% <br />87-120 <br />(CH 2271063-001) <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 /><16 <br />300.0 <br />02/18/22:202556njb <br />CCB <br />mg/l <br />0.00 <br />0.1 <br />CCV <br />mg/l <br />2.500 <br />103% <br />90-110 <br />CCB <br />mg/l <br />0.00 <br />0.1 <br />CCV <br />mg/l <br />2.500 <br />103% <br />90-110 <br />Nitrate <br />300.0 <br />02/18/22:201895NJB <br />Blank <br />mg/L <br />ND <br /><0.4 <br />LCS <br />mg/L <br />20.00 <br />99.4% <br />90-110 <br />MS <br />mg/L <br />40.00 <br />99.7% <br />85-119 <br />(CH 2271062-001) <br />MSD <br />mg/L <br />40.00 <br />103% <br />85-119 <br />MSRPD <br />mg/L <br />10.00 <br />3.1% <br />_<19 <br />MS I <br />mg/L 1 <br />40.00 1 <br />93.5 % 1 <br />85-119 <br />Page 7 of 9 <br />