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October 6, 2021 Lab ID : STK2153514 <br /> San Joaquin Co. Environmental Health Dep Customer : 3-17919 <br /> Quality Control - Inorganic <br /> Constituent Method Date/ID Type Units Conc. QC Data DQO Note <br /> Metals <br /> Sodium 200.7 09/22/21:214831AC CCB PPM -0.008 1 <br /> inc 200.7 MS ug/L, 800.0 102% 75-125 <br /> (VI 2147280-005) MSD ug/L 800.0 92.9% 75-125 <br /> MSRPD u 4000 9.5% <20.0 <br /> 200.7 09/22/21:21483 1 AC CCV ppm 1.000 103% 90-110 <br /> CCB ppm 0.00004 0.02 <br /> CCV ppm 1.000 107% 90-110 <br /> CCB PPM -0.0001 0.02 <br /> Wet Chem <br /> Alkalinity(as CaCO3) 2320B (CC 2183343-002) Du m 0.5% 10 <br /> 2320B 09/28/21:215210amm CCV mg/l 235.8 96.1% 90-110 <br /> CCV mg/1 235.8 90.3% 90-110 <br /> Bicarbonate 2320B (CC 2183343-002) Dup mgfL 0.4% 10 <br /> Carbonate 2320B (CC 2183343-002) Dup m 10 <br /> Hydroxide 2320B (CC 2183343-002) Du m 10 <br /> Conductivity 2510B 10/01/21:215313sta ICB umhos/cm 0.130 1 <br /> CCV umhos/cm 999.0 99.0% 95-105 <br /> CCV umhos/cm 999.0 99.0% 95-105 <br /> E.C. 2510B 10/01/21:211388sta Blank umhos/cm ND <1 <br /> (STK2153713-004) Dup umhos/cm 0.2% 5 <br /> Total Dissolved Solids(TFR) 2540CE 09/22/21:21099OCTL Blank mg/L 4.5 20 <br /> LCS mg/L 991.2 100% 90-110 <br /> (SP 2113205-004) Dup mg/L 4.3% 5 <br /> (SP 2113205-004) Du mg/L 1 2.9% 5 <br /> Chloride 300.0 09/21/21:21093 1 NJB Blank mg/L ND <1 <br /> LCS mg/L 25.00 103% 90-110 <br /> MS mg/L 50.00 99.7% 85-121 <br /> (STK2150625-006) MSD mg/L 50.00 99.6% 85-121 <br /> MSRPD mg/L 10.00 0.05% <19 <br /> MS mg/L 50.00 101 % 85-121 <br /> (STK2150625-011) MSD mg/L 50.00 101 % 85-121 <br /> MSRPD mg/L 10.00 0.01% <19 <br /> 300.0 09/21/21:214805njb CCB mg/l 0.00 1 <br /> CCV mg/l 25.00 103% 90-110 <br /> CCB mg/1 0.00 1 <br /> CCV Mg/1 25.00 103% 90-110 <br /> Fluoride 300.0 09/21/21:21093 1 NJB Blank mg/L ND <0.1 <br /> LCS mg/L 2.500 104% 90-110 <br /> MS mg/L 5.000 105% 87-120 <br /> (STK2150625-006) MSD mg/L 5.000 104% 87-120 <br /> MSRPD mg/L 10.00 1.0% <16 <br /> MS mg/L 5.000 106% 87-120 <br /> (STK2150625-011) MSD mg/L 5.000 105% 87-120 <br /> MSRPD mg/L 10.00 0.7% <16 <br /> 300.0 09/21/21:214805njb CCB mg/1 0.00 0.1 <br /> CCV mg/1 2.500 104% 90-110 <br /> CCB mg/1 0.00 0.1 <br /> CCV Mg/1 2.500 104% 90-110 <br /> Nitrate 300.0 09/21/21:210931NJB Blank mg/L ND <0.4 <br /> LCS mg/L 20.00 102% 90-110 <br /> MS mg/L 40.00 101% 85-119 <br /> (STK2150625-006) MSD mg/L 40.00 101 % 85-119 <br /> MSRPD mg/L 10.00 0.1% <19 <br /> MS I mg/L 1 40.00 1 102% 1 85-119 <br /> Page 7 of 9 <br />