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September 22, 2021 Lab ID : STK2152566 <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 09/06/21:213828AC CCB p m -0.11 1 <br /> inc 200.7 MS ug/L 800.0 78.8% 75-125 <br /> (STK2152566-001) MSD ug/L 800.0 85.4% 75-125 <br /> MSRPD ug/L 4000 7.7% _<20.0 <br /> 200.7 09/04/21:213774AC CCV ppm 1.000 96.7% 90-110 <br /> CCB ppm -0.0001 0.02 <br /> CCV ppm 1.000 97.1 % 90-110 <br /> CCB PPM -0.0003 0.02 <br /> Wet Chem <br /> At <br /> (as CaCO3) 2320B (STK2152713-001) Du m 0.9% 10 <br /> 2320B 09/15/21:214400amm CCV mg/l 235.8 93.9% 90-110 <br /> CCV -mg11 235.8 90.9% 90-110 <br /> Bicarbonate 2320B (STK2152713-001) rank <br /> mg/L 0.9% 10 <br /> arbonate 2320B (STK2152713-001) mg/L 10 <br /> Hydroxide 2320B (STK2152713-001) m 10 <br /> onductivity 2510B 09/14/21:214274staumhos/cm 0.0900 1 <br /> umhos/cm 999.0 95.3% 95-105 <br /> umhos/cm 999.0 95.1% 95-105 <br /> E.C. 2510B 09/14/21210625sta umhos/cm ND <1 <br /> (STK2150622-019) umhos/cm 0.6% 5 <br /> Total Dissolved Solids(TFR) 2540CE 09/07/21:210269CTLmg/L ND <20 <br /> mg/L 991.2 102% 90-110 <br /> (VI 2146600-00 1) Dup mg/L 3.3% 5 <br /> (V12146600-001) Dup mg/L 5.9% 5 440 <br /> Chloride 300.0 09/03/21:210232NJB Blank mg/L ND <I <br /> LCS mg/L 25.00 99.8% 90-110 <br /> MS mg/L 50.00 98.6% 85-121 <br /> (STK2150620-020) MSD mg/L 50.00 98.7% 85-121 <br /> MSRPD mg/L 10.00 0.06% <19 <br /> MS mg/L 50.00 93.3% 85-121 <br /> (STK2150620-024) MSD mg/L 50.00 93.4% 85-121 <br /> MSRPD mg/L 10.00 1 0.02% <19 <br /> 300.0 09/03/21:213977njb CCB mg/L 0.00 1 <br /> CCV mg/L 25.00 100% 90-110 <br /> CCB mg/L 0.13 1 <br /> CCV mg/L 25.00 100% 90-110 <br /> Fluoride 300.0 09/03/21:210232NJB Blank mg/L ND <0.1 <br /> LCS mg/L 2.500 99.8% 90-110 <br /> MS mg/L 5.000 101 % 87-120 <br /> (STK2150620-020) MSD mg/L 5.000 101% 87-120 <br /> MSRPD mg/L 10.00 0.5% <16 <br /> MS mg/L 5.000 101 % 87-120 <br /> (STK2150620-024) MSD mg/L 5.000 101 % 87-120 <br /> MSRPD mg/L 10.00 1 0.2% <16 <br /> 300.0 09/03/21:213977njb CCB mg/L 0.000 0.1 <br /> CCV mg/L 2.500 99.6% 90-110 <br /> CCB mg/L 0.000 0.1 <br /> CCV mgfL 2.500 99.8% 90-110 <br /> Nitrate 300.0 09/03/21:210232NJB Blank mg/L ND <0.4 <br /> LCS mg/L 20.00 99.6% 90-110 <br /> MS mg/L 40.00 101 % 85-119 <br /> (STK2150620-020) MSD mg/L 40.00 101 % 85-119 <br /> MSRPD mg/L 10.00 0.01% <19 <br /> MS m L 40.00 100% 85-1 l9 <br /> Page 8 of 10 <br />