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March 2, 2021 Lab ID : STK2131947 <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 02/10/21:202083AC CCB PPM 0.05 1 <br /> inc 200.7 MS ug/L 800.0 95.4% 75-125 <br /> (STK2131947-001) MSD ug/L 800.0 90.5% 75-125 <br /> MSRPD ug/L 4000 5.2% :520.0 <br /> 200.7 02/10/21:202083AC CCV ppm 1.000 102% 90-110 <br /> CCB ppm 0.0011 0.02 <br /> CCV ppm 1.000 99.6% 90-110 <br /> CCB ppm 0.0006 1 0.02 <br /> Wet Chem <br /> Alkalinity(as CaCO3) 2320B (STK2131970-001) Dup mg/L 7.2 10 <br /> 2320B 02/11/21:202087AMM CCV mg/L 235.8 94.0% 90-110 <br /> CCV m 235.8 90.6% 90-110 <br /> Bicarbonate 2320B (STK2131970-001) Dup m 8.8 10 <br /> Carbonate 2320B (STK2131970-001) Dup mg/L 0.0 10 <br /> Hydroxide 2320B (STK2131970-001) Dup m 0.0 10 <br /> Conductivity 2510B 02/12/21:202121STA ICB umhos/cm 0.12 1 <br /> CCV umhos/cm 999.0 97.7% 95-105 <br /> CCV umbos/cm 999.0 97.1% 95-105 <br /> E.C. 2510B 02/12/21:201562sta Blank umhos/cm ND <1 <br /> (SP 2101924-001) Dup umhos/cm 0.5% 5 <br /> Total Dissolved Solids(TFR) 2540CE (VI 2140930-00t) Dup mg/L 0.4% 5 <br /> Blank mg/L ND <20 <br /> LCS mg/L 993.8 98.4% 90-110 <br /> (VI 2140930-001) Dup m 3.7% 5 <br /> Chloride 300.0 02/09/21:201408MCA Blank mg/L ND <1 <br /> LCS mg/L 25.00 102% 90-110 <br /> MS mg/L 50.00 84.1% 85-121 435 <br /> (CH 2170944-001) MSD mg/L 50.00 85.3% 85-121 <br /> MSRPD mg/L 10.00 0.6% :519 <br /> MS mg/L 50.00 83.4% 85-121 435 <br /> (CH 2170944-005) MSD mg/L 50.00 83.9% 85-121 435 <br /> MSRPD m 10.00 0.2% <19 <br /> 300.0 02/09/21:202017MCA CCB mg/L 0.1 1 <br /> CCV mg/L 25.00 99.4% 90-110 <br /> CCB mg/L 0.08 1 <br /> CCV mg/L 25.00 99.3% 90-110 <br /> Fluoride 300.0 02/09/21:201408MCA Blank mg/L ND <0.1 <br /> LCS mg/L 2.500 101% 90-110 <br /> MS mg/L 5.000 102% 87-120 <br /> (CH 2170944-001) MSD mg/L 5.000 103% 87-120 <br /> MSRPD mg/L 10.00 1.0% :516 <br /> MS mg/L 5.000 102% 87-120 <br /> (CH 2170944-005) MSD mg/L 5.000 102% 87-120 <br /> MSRPD m 10.00 0.5% 516 <br /> 300.0 02/09/21:202017MCA CCB mg/L 0.000 0.1 <br /> CCV mg/L 2.500 98.5% 90-110 <br /> CCB mg/L 0.000 0.1 <br /> CCV m 2.500 98.4% 90-110 <br /> Nitrate 300.0 02/09/21:201408MCA Blank mg/L ND <0.4 <br /> LCS mg/L 20.00 101% 90-110 <br /> MS mg/L 40.00 99.4% 85-119 <br /> (CH 2170944-001) MSD mg/L 40.00 101% 85-119 <br /> MSRPD mg/L 10.00 1.4% :519 <br /> MS I mg/L 1 40.00 1 99.6% 1 85-119 <br /> Page 7 of 9 <br />