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November 30, 2021 Lab ID : STK2155487 <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 />10/27/21:216840AC <br />CCB <br />PPM <br />0.07 <br />l <br />inc <br />200.7 <br />MS <br />ug/L <br />800.0 <br />85.9% <br />75-125 <br />(STK2155466-001) <br />MSD <br />ug/L <br />800.0 <br />84.7% <br />75-125 <br />MSRPD <br />ug/L <br />4000 <br />1.3% <br /><20.0 <br />200.7 <br />10/27/21:216840AC <br />CCV <br />ppm <br />1.000 <br />96.2% <br />90-110 <br />CCB <br />ppm <br />-0.0002 <br />0.02 <br />CCV <br />ppm <br />1.000 <br />97.8% <br />90-110 <br />CCB <br />PPM <br />-0.0002 <br />0.02 <br />Wet Chem <br />Alkalinity (as CaCO3) <br />23208 <br />(STK2155656-003) <br />Dup <br />mg/L <br />2.0% <br />10 <br />23206 <br />11/09/21:217454AMM <br />CCV <br />mg/L <br />235.8 <br />94.6% <br />90-110 <br />CCV <br />mg/L <br />235.8 <br />94.5% <br />90-110 <br />Bicarbonate <br />2320B <br />(STK2155656-003) <br />Dup <br />mg/L <br />2.0% <br />10 <br />Carbonate <br />2320B <br />(STK2155656-003) <br />Dup <br />mg/L <br />0.0 <br />10 <br />Hydroxide <br />2320B <br />(STK2155656-003) <br />Dup <br />mg/L <br />0.0 <br />10 <br />Conductivity <br />2510B <br />I1/10/21:217524sta <br />ICB <br />umhos/cm <br />0.110 <br />1 <br />CCV <br />umhos/cm <br />999.0 <br />97.8% <br />95-105 <br />CCV <br />umhos/cm <br />999.0 <br />98.3% <br />95-105 <br />E. C. <br />2510B <br />11/10/21:213089sta <br />Blank <br />umhos/cm <br />ND <br /><l <br />(STK2155906-004) <br />Dup <br />umhos/cm <br />0.5% <br />5 <br />Total Dissolved Solids (TFR) <br />2540CE <br />10/28/21:212539CTL <br />Blank <br />mg/L <br />4.3 <br />20 <br />LES <br />mg/L <br />991.2 <br />103% <br />90-110 <br />(SP 2115272-003) <br />Dup <br />mg/L <br />1.4% <br />5 <br />(SP 2115272-003) <br />Dup <br />mg/L <br />0.1% <br />5 <br />Chloride <br />300.0 <br />11/24/21:21329ONJB <br />Blank <br />mg/L <br />ND <br /><I <br />LCS <br />mg/L <br />25.00 <br />101% <br />90-110 <br />MS <br />mg/L <br />50.00 <br />89.7% <br />85-121 <br />(STK2156169-001) <br />MSD <br />mg/L <br />50.00 <br />98.9% <br />85-121 <br />MSRPD <br />mg/L <br />10.00 <br />5.8% <br />519 <br />MS <br />mg/L <br />50.00 <br />81.5% <br />85-121 <br />435 <br />(CC 2184090-003) <br />MSD <br />mg/L <br />50.00 <br />86.4% <br />85-121 <br />MSRPD <br />mg/L <br />10.00 <br />2.4% <br /><19 <br />300.0 <br />11/24/21:218510njb <br />CCB <br />mg/1 <br />0.0930 <br />1 <br />CCV <br />mg/1 <br />25.00 <br />101% <br />90-110 <br />CCB <br />mg/I <br />0.0830 <br />1 <br />CCV <br />mg/1 <br />25.00 <br />101% <br />90-110 <br />Fluoride <br />300.0 <br />11/24/21:21329ONJB <br />Blank <br />mg/L <br />ND <br /><0.1 <br />LCS <br />mg/L <br />2.500 <br />101% <br />90-110 <br />MS <br />mg/L <br />5.000 <br />92.2% <br />87-120 <br />(STK2156169-001) <br />MSD <br />mg/L <br />5.000 <br />102% <br />87-120 <br />MSRPD <br />mg/L <br />10.00 <br />9.8% <br />_<16 <br />MS <br />mg/L <br />5.000 <br />98.9% <br />87-120 <br />(CC 2184090-003) <br />MSD <br />mg/L <br />5.000 <br />103% <br />87-120 <br />MSRPD <br />mg/L <br />10.00 <br />4.2% <br /><16 <br />300.0 <br />11/24/21:218510njb <br />CCB <br />mg/I <br />0.00 <br />0.1 <br />CCV <br />mg/I <br />2.500 <br />99.1% <br />90-110 <br />CCB <br />mg/l <br />0.00 <br />0.1 <br />CCV <br />m l <br />2.500 <br />99.2% <br />90-110 <br />Nitrate <br />300.0 <br />11/24/21:21329ONJB <br />Blank <br />mg/L <br />ND <br /><0.4 <br />LCS <br />mg/L <br />20.00 <br />102% <br />90-110 <br />MS <br />mg/L <br />40.00 <br />99.0% <br />85-119 <br />(STK2156169-001) <br />MSD <br />mg/L <br />40.00 <br />109% <br />85-119 <br />MSRPD <br />mg/L <br />10.00 <br />9.4% <br /><19 <br />MS <br />I mg/L <br />1 40.00 <br />1 95.6% <br />1 85-119 <br />Page 7 of 9 <br />