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August 4, 2021 Lab ID : STK2139748 <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 />Conc. <br />QC Data <br />DQO <br />Note <br />Metals <br />Sodium <br />200.7 <br />07/16/21:210902AC <br />CCB <br />PPM <br />-0.09 <br />1 <br />inc <br />200.7 <br />MS <br />ug/L <br />800.0 <br />111 % <br />75-125 <br />(CC 2182463-002) <br />MSD <br />ug/l, <br />800.0 <br />111 % <br />75-125 <br />MSRPD <br />I u L <br />4000 <br />0.2% <br />1 <20.0 <br />200.7 <br />07/16/21:210902AC <br />CCV <br />ppm <br />1.000 <br />106% <br />90-110 <br />CCB <br />ppm <br />0.00009 <br />0.02 <br />CCV <br />ppm <br />1.000 <br />106% <br />90-110 <br />CCB <br />ppm <br />0.0007 <br />0.02 <br />Wet Chem <br />Alkalinity (as CaCO3) <br />2320B <br />(SP 2109425-001) <br />Dup <br />mg/L <br />0.10 <br />10 <br />2320B <br />07/21/21:211137AMM <br />CCV <br />mg/L <br />235.8 <br />94.4% <br />90-110 <br />CCV <br />mg/L <br />235.8 <br />102% <br />90-110 <br />Bicarbonate <br />2320B <br />(SP 2109425-001) <br />Du <br />mg/L <br />0.24 <br />10 <br />Carbonate <br />2320B <br />(SP 2109425-001) <br />Du <br />mg/l, <br />0.0 <br />l0 <br />Hydroxide <br />2320B <br />(SP 2109425-001) <br />Du <br />mg/L <br />0.0 <br />10 <br />Conductivity <br />2510B <br />07/28/21:211520sta <br />ICB <br />umhos/cm <br />0.150 <br />1 <br />CCV <br />umhos/cm <br />975 <br />95-105 <br />CCV <br />umhos/cm <br />984 <br />95-105 <br />E. C. <br />2510B <br />07/28/21:208530sta <br />Blank <br />umhos/cm <br />ND <br /><1 <br />(SP 2109706-004) <br />Dup <br />umhos/cm <br />0.3% <br />5 <br />Total Dissolved Solids (TFR) <br />2540CE <br />07/15/21:207963CTL <br />Blank <br />mg/L <br />ND <br /><20 <br />LCS <br />mg/L <br />992.1 <br />104% <br />90-110 <br />(SP 2109296-001) <br />Dup <br />mg/L <br />0.2% <br />5 <br />(SP 2109296-001) <br />Dup <br />mg/L <br />0.5% <br />5 <br />hloride <br />300.0 <br />07/13/21:207856MCA <br />Blank <br />mg/L <br />ND <br /><1 <br />LCS <br />mg/L <br />25.00 <br />99.7% <br />90-110 <br />MS <br />mg/L <br />50.00 <br />97.7% <br />85-121 <br />(STK2139751-001) <br />MSD <br />mg/L <br />50.00 <br />99.0% <br />85-121 <br />MSRPD <br />mg/L <br />10.00 <br />1.2% <br /><19 <br />MS <br />mg/L <br />50.00 <br />90.0% <br />85-121 <br />(VI 2145286-009) <br />MSD <br />mg/L <br />50.00 <br />92.3% <br />85-121 <br />MSRPD <br />mg/L <br />10.00 <br />1.5% <br /><19 <br />300.0 <br />07/13/21:21068 1 MCA <br />ICB <br />mg/L <br />0.00 <br />1 <br />ICV <br />mg/L <br />25.00 <br />96.3% <br />90-110 <br />CCB <br />mg/L <br />0.08 <br />l <br />CCV <br />mg/L <br />25.00 <br />96.5% <br />90-110 <br />Fluoride <br />300.0 <br />07/13/21:207856MCA <br />Blank <br />mg/L <br />ND <br /><0.1 <br />LCS <br />mg/L <br />2.500 <br />99.5% <br />90-110 <br />MS <br />mg/L <br />5.000 <br />100% <br />87-120 <br />(STK2139751-001) <br />MSD <br />mg/L <br />5.000 <br />101% <br />87-120 <br />MSRPD <br />mg/L <br />10.00 <br />0.8% <br /><16 <br />MS <br />mg/L <br />5.000 <br />95.8% <br />87-120 <br />(VI 2145286-009) <br />MSD <br />mg/L <br />5.000 <br />97.6% <br />87-120 <br />MSRPD <br />mg/L <br />10.00 <br />1.5% <br /><16 <br />300.0 <br />07/13/21:21068 1 MCA <br />ICB <br />mg/L <br />0.000 <br />0.1 <br />ICV <br />mg/L <br />2.500 <br />96.3% <br />90-110 <br />CCB <br />mg/L <br />0.000 <br />0.1 <br />CCV <br />mg/L <br />2.500 <br />96.4% <br />90-110 <br />Nitrate <br />300.0 <br />07/13/21:207856MCA <br />Blank <br />mg/L <br />ND <br /><0.4 <br />LCS <br />mg/L <br />20.00 <br />99.2% <br />90-110 <br />MS <br />mg/L <br />40.00 <br />99.8% <br />85-119 <br />(STK2139751-001) <br />MSD <br />mg/L <br />40.00 <br />101% <br />85-119 <br />MSRPD <br />mg/L <br />10.00 <br />1.3% <br /><19 <br />MS I <br />m <br />40.00 1 <br />98.0% 1 <br />85-119 <br />Page 7 of 9 <br />