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March 2, 2021 Lab ID : STK2131533 <br /> San Joaquin Co.Environmental Health Dep Customer : 3-17919 <br /> Quality Control-Inorganic <br /> Constituent Method Date/ID Type Units Cone. QC Data DQO Note <br /> Metals <br /> Sodium 200.7 02/09/21:201936AC CCB ppm 0.61 l <br /> inc 200.7 MS ug/L 800.0 91.7% 75-125 <br /> (STK2131533-001) MSD ug/L 800.0 91.0% 75-125 <br /> MSRPD u 4000 0.5% 520.0 <br /> 200.7 02/09/21:201936AC CCV ppm 1.000 99.2% 90-110 <br /> CCB ppm -0.0009 0.02 <br /> CCV ppm 1.000 92.7% 90-110 <br /> CCB ppm 0.00008 0.02 <br /> Wet Chem <br /> Alkalinity(as CaCO3) 2320B (VI 2140771-008) Dup mg/L 0.08% 10 <br /> 2320B 02/09/21:201943AMM CCV mg/L 235.8 96.0% 90-110 <br /> CCV nt 235.8 90.7% 90-110 <br /> Bicarbonate 2320B I2140771-008) Dup ntg/L 0.0% 10 <br /> Carbonate 2320B I2140771-008) Du mg/L 0.0 10 <br /> Hydroxide 2320B (VI 2140771-008) Du mg/L 0.0 10 <br /> Conductivity 2510B 02/I0/21:201949STA ICB umbos/cm 0.06 1 <br /> CCV umhos/cm 999.0 98.1% 95-105 <br /> CCV umhos/cm 999.0 97.7% 95-105 <br /> E.C. 2510B 02/10/21:201423sta Blank umhos/cm ND <1 <br /> (SP 2101442-001) Dup umhos/cm 0.6% 5 <br /> Total Dissolved Solids(TFR) 2540CE 02/08/21:201346CTL Blank mg/L 6.1 20 <br /> LCS mg/L 993.8 98.7% 90-110 <br /> (VI 2140834-001) Dup mg/L 0.8% 5 <br /> (VI 2140834-001) Dup I mg/L 0.5% 5 <br /> Chloride 300.0 02/04/21:201242MCA Blank mg/L ND <1 <br /> LCS mg/L 25.00 103% 90-110 <br /> MS mg/L 50.00 73.1% 85-121 435 <br /> (VI 2140878-001) MSD mg/L 50.00 72.0% 85-121 435 <br /> MSRPD mg/L 10.00 0.4% <19 <br /> MS mg/L 50.00 99.9% 85-121 <br /> (STK2131533-001) MSD mg/L 50.00 101% 85-121 <br /> MSRPD I m 10.00 1 1.0% :519 <br /> 300.0 02/04/21:20170 1 MCA ICB mg/L 0.00 1 <br /> ICV mg/L 25.00 103% 90-110 <br /> CCB mg/L 0.1 1 <br /> CCV m 25.00 104% 90-110 <br /> Fluoride 300.0 02/04/21:201242MCA Blank mg/L ND <0.1 <br /> LCS mg/L 2.500 102% 90-110 <br /> MS mg/L 5.000 100% 87-120 <br /> (VI 2140878-001) MSD mg/L 5.000 100% 87-120 <br /> MSRPD mg/L 10.00 0.2% :516 <br /> MS mg/L 5.000 101% 87-120 <br /> (STK2131533-001) MSD mg/L 5.000 101% 87-120 <br /> MSRPD I mg/L 10.00 0.7% 516 <br /> 300.0 02/04/21:201701MCA ICB mg/L 0.000 0.1 <br /> ICV mg/L 2.500 102% 90-110 <br /> CCB ntg/L 0.000 0.1 <br /> CCV mg/L 2.500 103% 90-110 <br /> Nitrate 300.0 02/04/21:201242MCA Blank mg/L ND <0.4 <br /> LCS mg/L 20.00 104% 90-110 <br /> MS mg/L 40.00 102% 85-119 <br /> (VI 2140878-001) MSD mg/L 40.00 102% 85-119 <br /> MSRPD mg/L 10.00 0.3% :519 <br /> MS I mg/L 1 40.00 1 101% 1 85-119 <br /> Page 7 of 9 <br />