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October 6, 2021 Lab ID : STK2153518 <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 ug/L 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 09/29/21:215210amm CCV mg/I 235.8 95.5% 90-110 <br /> CCV mg/1 235.8 96.1% 90-110 <br /> Bicarbonate 2320B (CC 2183343-002) Dup m 0.4% 10 <br /> Carbonate 23208 (CC 2183343-002) Dup mg/L 10 <br /> Hydroxide 2320B (CC 2183343-002) Dup mg/L 10 <br /> Conductivity 25108 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. 25108 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) Dup m L 1 2.9% 5 <br /> Chloride 300.0 09/21/21:21093ONJB Blank mg/L ND <1 <br /> LCS mg/L 25.00 102% 90-110 <br /> MS mg/L 50.00 98.1 % 85-121 <br /> (CH 2177537-001) MSD mg/L 50.00 98.2% 85-121 <br /> MSRPD mg/L 10.00 0.02% <19 <br /> MS mg/L. 50.00 99.6% 85-121 <br /> (STK2150625-015) MSD mg/L 50.00 99.8% 85-121 <br /> MSRPD mg/L 10.00 0.1% <19 <br /> 300.0 09/21/21:214807njb CCB mg/I 0.00 1 <br /> CCV mg/I 25.00 103% 90-110 <br /> CCB mg/l 0.00 1 <br /> CCV mg/1 25.00 103% 90-110 <br /> Fluoride 300.0 09/21/21:21093ONJB Blank mg/L ND <0.1 <br /> LCS mg/L 2.500 103% 90-110 <br /> MS mg/L 5.000 102% 87-120 <br /> (CH 2177537-001) MSD mg/L 5.000 102% 87-120 <br /> MSRPD mg/L 10.00 0.3% <16 <br /> MS mg/L 5.000 102% 87-120 <br /> (STK2150625-015) MSD mg/L 5.000 102% 87-120 <br /> MSRPD mg/L 10.00 0.06% <16 <br /> 300.0 09/21/21:214807njb CCB mg/1 0.00 0.1 <br /> CCV mg/l 2.500 104% 90-110 <br /> CCB mg/l 0.00 0.1 <br /> CCV Mg/1 2.500 104% 90-110 <br /> Nitrate 300.0 09/21/21:21093ONJB Blank mg/L ND <0.4 <br /> LCS mg/L 20.00 102% 90-110 <br /> MS mg/L 40.00 86.0% 85-119 <br /> (CH 2177537-001) MSD mg/L 40.00 86.0% 85-119 <br /> MSRPD mg/L 10.00 0.04% <19 <br /> MS I mg/L 1 40.00 1 102% 1 85-119 <br /> Page 7 of 9 <br />