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Natural Soda LLC 2023 Project Status Report & Annual Plan of Development A-9 January 2024 Appx. Table A-8: AG-2 Annual A-Groove Aquifer Parameters No. of Samples High Date Low Date Average Units Wet Chemistry Bicarbonate as CaCO3 6 441 08/17/2021 308 11/12/2021 379 mg/l Carbonate as CaCO3 6 283 11/12/2021 80 08/17/2021 168 mg/l Total Alkalinity as CaCO3 6 592 11/12/2021 513 09/03/2021 547 mg/l Bromide 5 U 08/17/2021 U 09/10/2021 U mg/l Cation-Anion Balance 6 3.20 09/03/2021 -3.40 03/14/2022 -0.53 % Sum of Anions 6 17.00 09/10/2021 13.00 08/17/2021 15.00 meq/l Sum of Cations 6 17.00 09/10/2021 13.00 08/17/2021 14.83 meq/l Chemical Oxygen Demand 5 35.00 09/03/2021 25.00 09/10/2021 29.33 mg/l Chloride 6 32 09/10/2021 13 02/13/2023 23 mg/l Conductivity, Lab 6 1,620 11/12/2021 1,200 02/13/2023 1,392 µmhos Fluoride 6 10.90 02/13/2023 9.31 09/10/2021 10.06 mg/l Hardness as CaCO3 6 60.00 08/17/2021 40.00 09/03/2021 49.83 mg/l Nitrate as N, dissolved 5 UH 08/17/2021 UH 09/10/2021 UH mg/l Nitrate/Nitrite as N, 5 UH 08/17/2021 UH 09/10/2021 UH mg/l Nitrite as N, dissolved 5 UH 08/17/2021 UH 09/10/2021 UH mg/l Nitrogen, Ammonia 5 0.91 09/03/2021 0.39 08/17/2021 0.66 mg/l Nitrogen, Organic 5 0.59 09/10/2021 0.31 09/03/2021 0.46 mg/l Nitrogen, Total Kjeldahl 5 1.36 09/10/2021 0.60 02/13/2023 0.97 mg/l pH, lab 6 9.80 09/10/2021 8.70 02/13/2023 9.28 units Phosphate, total 5 1.45 09/03/2021 0.18 02/13/2023 0.70 mg/l Phosphorus, total 5 0.47 09/03/2021 0.06 02/13/2023 0.23 mg/l SAR in Water 6 23 09/03/2021 15.00 08/17/2021 19 none Sulfate 6 190 11/12/2021 73.90 02/13/2023 137 mg/l Sulfide 5 2.73 09/10/2021 0.10 08/17/2021 0.99 mg/l Total Dissolved Solids 6 971 09/10/2021 727 02/13/2023 847 mg/l Conductivity, Field 9 1,561 09/10/2021 1,020 08/11/2021 1,243 µmhos pH, Field 9 9.71 09/03/2021 7.44 08/11/2021 8.59 units Temperature (°C),9 28.10 08/11/2021 10.10 02/13/2023 17.98 (°C) Water Level, Field 11 374.60 11/13/2023 368.70 09/03/2021 370.80 Ft. Parameters No. of Samples High Date Low Date Average Units Metals Aluminum, dissolved 5 0.09 08/17/2021 0.09 08/17/2021 0.09 mg/l Arsenic, dissolved 5 0.45 09/10/2021 0.06 08/17/2021 0.21 mg/l Barium, dissolved 5 0.07 09/10/2021 0.02 08/17/2021 0.05 mg/l Beryllium, dissolved 5 U 08/17/2021 U 09/10/2021 U mg/l Boron, dissolved 6 0.26 09/10/2021 0.24 02/13/2023 0.25 mg/l Cadmium, dissolved 5 U 08/17/2021 U 09/10/2021 U mg/l Calcium, dissolved 6 11.30 08/17/2021 4.84 09/03/2021 7.24 mg/l Chromium, dissolved 5 U 08/17/2021 U 09/10/2021 U mg/l Copper, dissolved 5 U 08/17/2021 U 09/10/2021 U mg/l Iron, dissolved 5 0.30 08/17/2021 0.17 09/03/2021 0.25 mg/l Lead, dissolved 5 U 08/17/2021 U 09/10/2021 U mg/l Lithium, dissolved 5 0.11 09/03/2021 0.07 02/13/2023 0.09 mg/l Magnesium, dissolved 6 8.79 11/12/2021 6.64 02/13/2023 7.68 mg/l Manganese, dissolved 5 0.05 08/17/2021 0.05 08/17/2021 0.05 mg/l Mercury, dissolved 5 U 08/17/2021 U 09/10/2021 U mg/l Molybdenum, dissolved 5 0.69 09/10/2021 0.04 02/13/2023 0.35 mg/l Nickel, dissolved 5 U 08/17/2021 U 09/10/2021 U mg/l Potassium, dissolved 6 30.30 09/03/2021 1.21 02/13/2023 14.96 mg/l Selenium, dissolved 5 0.0028 08/17/2021 0.0003 09/10/2021 0.0012 mg/l Silica, dissolved 6 13.40 08/17/2021 6.40 09/03/2021 8.92 mg/l Sodium, dissolved 6 342 09/10/2021 269 02/13/2023 303 mg/l Strontium, dissolved 6 1.07 11/12/2021 0.77 08/17/2021 0.93 mg/l Vanadium, dissolved 5 U 08/17/2021 U 09/10/2021 U mg/l Zinc, dissolved 5 0.62 09/10/2021 0.30 03/14/2022 0.46 mg/l