2025-08-28_HYDROLOGY - M1983194 (7)

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Natural Soda LLC 2024 Project Status Report & Annual Plan of Development 15 January 2025 4.1.4. Wells Associated with the NS Project (Confidential) The following well-field related activities occurred in 2024: Refer Figure 3 & Figure 4 Plant and Well Location Map. • The 89-2 A-Groove groundwater monitoring well sampling equipment was experiencing difficulties during sampling events in late 2023. NS removed the nitrogen lift pump (NLP) and tubing on February 20, 2024. The NLP and tubing were replaced with new components and the equipment was tested for proper post installation operations. • On May 1st, construction of a cuttings pit for the 18H drilling operations commenced on the 18H-1V pad. Additional location preparation for 18H-1V and 18H-IR-W drilling operations continued the first two weeks of May 2024. • A new production well, the 18H-1V Slant Well, was spudded on May 15th with the Capstar Drilling Rig #321. The 18H-1V production well was drilled and completed to its final total depth on May 26, 2024. • The 18H-IR-WA production well was spudded on May 29th, 2024. Drilling operations ceased on June 19th in 18H-IR-WA production well, due to cement plug and casing damage issues. All equipment was rigged down and demobilized from the location. The NS 18H-IR-WA well was Plugged and Abandoned (P&A) July 15th through July 18th, 2024. The 9 5/8” casing was perforated at 5 depths below ground level: 180’, 360’, 830’, 1,125’ and 1,620’. Five cement stages were pumped, to P&A the well, from 1,708’ to surface. The casing was cut off below ground level and a plaque installed to identify the well per regulation. • NS conducted discrete zone water sampling of the DS-3, DS-6, DS-7, and DS- 10 wells for annual water quality analysis on June 25, 2024. • Between September 9th and 12th Red Rock Well Service worked on the 12H- IR well to clear a sediment obstruction in the wellbore. 12H-IR well returned to service on the 13th. • The NS 18H-IR-W redrill production well drilling operations started on October 8th, 2024. Drilling operations were completed on October 28th and the Capstar Drilling Rig #330 rig was released to be demobilized off the NS lease. Hydraulic connection of the 18H-IR-W and 18H-1V production wells was not immediately established at the end of drilling operations. Completion operations to connect the 18H-1V and 18H-IR-W production wells continued in November and December with the Red Rock Well Service workover rig but were unsuccessful. Additional connection operations will be undertaken during the second quarter of 2025. • NS pulled the recovery pump from the 12H-IR production well and installed it in the 12H-R production well. Going forward, the 12H-IR will be the injection well and the 12H-R will be the recovery well, the mining direction will be from West to East.