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December 30, 2021 Lab ID : STK2157970 <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 12/20/21:219657AC CCB ppm 0.1 l <br /> inc 200.7 MS ug/L 800.0 89.5% 75-125 <br /> (SP 2118091-00 1) MSD ug/L 800.0 87.9% 75-125 <br /> MSRPD ug/L 4000 1.4% <20.0 <br /> 200.7 12/20/21:219657AC CCV ppm 1.000 96.1% 90-110 <br /> CCB ppm -0.0008 0.02 <br /> CCV ppm 1.000 96.4% 90-110 <br /> CCB ppm 0.0020 0.02 <br /> Wet Chem <br /> Alkalinity(as CaCO3) 2320B (SP 2117837-007) Dup m 1.6% 10 <br /> 2320B 12/21/21:219747AMM CCV mg/L 235.8 94.3% 90-110 <br /> CCV mg/L 235.8 96.8% 90-110 <br /> Bicarbonate 2320B (SP 2117837-007) Dup mg/L 1.7% 10 <br /> Carbonate 2320B (SP 2117837-007) Dup mg/L 0.0 10 <br /> Hydroxide 2320B (SP 2117837-007) Dup mg/L 0.0 10 <br /> Conductivity 2510B 12/20/21:219566sta ICB umhos/cm 0.0700 1 <br /> CCV umhos/cm 999.0 100% 95-105 <br /> CCV umhos/cm 999.0 101% 95-105 <br /> E.C. 2510B 12/20/21:214594sta Blank umhos/cm ND <1 <br /> (STK2157876-001) Dup umhos/cm 0.3% 5 <br /> Total Dissolved Solids(TFR) 2540CE12/17/21:214558CTL Blank mg/L ND <20 <br /> LES mg/L 991.2 99.9% 90-110 <br /> (STK2157718-008) Dup mg/L 1.3% 5 <br /> (STK2157718-008) Dup M91L 2.3% 5 <br /> Chloride 300.0 12/16/21:214499NIB Blank mg/L ND <1 <br /> LCS mg/L 25.00 99.8% 90-110 <br /> MS mg/L 50.00 87.2% 85-121 <br /> (SP 2117922-001) MSD mg/L 50.00 97.3% 85-121 <br /> MSRPD mg/L 10.00 8.3% <19 <br /> MS mg/L 50.00 90.8% 85-121 <br /> (SP 2117787-003) MSD mg/L 50.00 100% 85-121 <br /> MSRPD m 10.00 1 8.7% <19 <br /> 300.0 12/16/21:219610njb CCB mg/l 0.0810 1 <br /> CCV mg/l 25.00 99.1% 90-110 <br /> CCB mg/l 0.0820 1 <br /> CCV mg/1 25.00 99.1% 90-110 <br /> Fluoride 300.0 12/16/21:214499NJB Blank mg/L ND <0.I <br /> LCS mg/L 2.500 99.4% 90-110 <br /> MS mg/L 5.000 91.0% 87-120 <br /> (SP 2117922-001) MSD mg/L 5.000 101% 87-120 <br /> MSRPD mg/L 10.00 10.3% <_16 <br /> MS mg/L 5.000 93.0% 87-120 <br /> (SP 2117787-003) MSD mg/L 5.000 103% 87-120 <br /> MSRPD m 10.00 9.8% <16 <br /> 300.0 12/16/21:219610njb CCB mg/l 0.00 0.1 <br /> CCV mg/l 2.500 99.3% 90-110 <br /> CCB mg/l 0.00 0.1 <br /> CCV mg/l 2.500 99.1% 90-110 <br /> Nitrate 300.0 12/16/21:214499NJB Blank mg/L ND <0.4 <br /> LCS mg/L 20.00 98.2% 90-110 <br /> MS mg/L 40.00 88.8% 85-119 <br /> (SP 2117922-001) MSD mg/L 40.00 99.0% 85-119 <br /> MSRPD mg/L 10.00 8.7% 519 <br /> MS I mg/L 1 40.00 1 91.8% 1 85-119 <br /> Page 7 of 9 <br />