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May 18, 2021 Lab ID : STK2136230 <br />San Joaquin Co. Environmental Health Dep Customer :3-17919 <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 />05/10/21:20693 1 AC <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 />(VI 2143433-002) <br />MSD <br />ug/L <br />800.0 <br />110% <br />75-125 <br />MSRPD <br />I ug/L <br />4000 <br />5.7% <br />1 <20.0 <br />200.7 <br />05/10/21:20693 1 AC <br />CCV <br />ppm <br />1.000 <br />104% <br />90-110 <br />CCB <br />ppm <br />-0.00005 <br />0.02 <br />CCV <br />ppm <br />1.000 <br />101% <br />90-110 <br />CCB <br />PPM <br />-0.0002 <br />0.02 <br />Wet Chem <br />Alkalinity (as CaCO3) <br />2320B <br />(VI 2143433-001) <br />Du <br />mg/L <br />3.6% <br />10 <br />23208 <br />05/16/21:207219AMM <br />CCV <br />mg/L <br />235.8 <br />96.0% <br />90-110 <br />CCV <br />mg/L <br />235.8 <br />93.1 % <br />90-110 <br />Bicarbonate <br />2320B <br />(VI 2143433-001) <br />Dup <br />mg/L <br />3.7% <br />10 <br />Carbonate <br />2320B <br />(VI 2143433-001) <br />Du <br />mg/L <br />0.0 <br />10 <br />Hydroxide <br />2320B <br />(VI 2143433-001) <br />Dup <br />mg/L <br />0.0 <br />10 <br />Conductivity <br />2510B <br />05/17/21:207233sta <br />ICB <br />umhos/cm <br />0.09 <br />1 <br />CCV <br />umhos/cm <br />1000 <br />102% <br />95-105 <br />CCV <br />umbos/cm <br />1000 <br />101% <br />95-105 <br />E. C. <br />2510B <br />05/17/21:205392sta <br />Blank <br />umhos/cm <br />ND <br /><1 <br />(CH 2172584-001) <br />Dup <br />umhos/cm <br />0.2% <br />5 <br />Total Dissolved Solids (TFR) <br />2540CE <br />05/11/21:20518ICTL <br />Blank <br />mg/L <br />ND <br /><20 <br />LCS <br />mg/L <br />995.0 <br />101% <br />90-110 <br />(SP 2106116-002) <br />Dup <br />mg/L <br />2.7% <br />5 <br />(SP 2106116-002) <br />Du <br />mg/L <br />4.1% <br />5 <br />Chloride <br />300.0 <br />05/07/21:205045MCA <br />Blank <br />mg/L <br />ND <br /><1 <br />LES <br />mg/L <br />25.00 <br />103% <br />90-110 <br />MS <br />mg/L <br />50.00 <br />94.1% <br />85-121 <br />(SP 2105749-00 1) <br />MSD <br />mg/L <br />50.00 <br />95.8% <br />85-121 <br />MSRPD <br />mg/L <br />10.00 <br />1.1% <br /><19 <br />MS <br />mg/L <br />50.00 <br />96.4% <br />85-121 <br />(VI 2143433-002) <br />MSD <br />mg/L <br />50.00 <br />97.7% <br />85-121 <br />MSRPD <br />mg/L <br />10.00 <br />0.8% <br /><19 <br />300.0 <br />05/07/21:206925MCA <br />CCB <br />mg/L <br />0.1 <br />1 <br />CCV <br />mg/L <br />25.00 <br />99.5% <br />90-110 <br />CCB <br />mg/L <br />0.1 <br />1 <br />CCV <br />m <br />25.00 <br />99.3% <br />90-110 <br />Fluoride <br />300.0 <br />05/07/21:205045MCA <br />Blank <br />mg/L <br />ND <br /><0.1 <br />LCS <br />mg/L <br />2.500 <br />105% <br />90-110 <br />MS <br />mg/L <br />5.000 <br />103% <br />87-120 <br />(SP 2105749-001) <br />MSD <br />mg/L <br />5.000 <br />105% <br />87-120 <br />MSRPD <br />mg/L <br />10.00 <br />1.7% <br /><16 <br />MS <br />mg/L <br />5.000 <br />105% <br />87-120 <br />(VI 2143433-002) <br />MSD <br />mg/L <br />5.000 <br />106% <br />87-120 <br />MSRPD <br />mg/L <br />10.00 <br />Lo% <br /><16 <br />300.0 <br />05/07/21:206925MCA <br />CCB <br />mg/L <br />0.015 <br />0.1 <br />CCV <br />mg/L <br />2.500 <br />100% <br />90-110 <br />CCB <br />mg/L <br />0.015 <br />0.1 <br />CCV <br />mg/L <br />2.500 <br />100% <br />90-110 <br />Nitrate <br />300.0 <br />05/07/21:205045MCA <br />Blank <br />mg/L <br />ND <br /><0.4 <br />LCS <br />mg/L <br />20.00 <br />103% <br />90-110 <br />MS <br />mg/L <br />40.00 <br />103% <br />85-119 <br />(SP 2105749-001) <br />MSD <br />mg/L <br />40.00 <br />105% <br />85-119 <br />MSRPD <br />mg/l. <br />10.00 <br />1.7% <br /><19 <br />MS <br />I mg/L <br />1 40.00 <br />1 92.7% <br />1 85-119 <br />Page 7 of 9 <br />