2025-09-02_REVISION - M2023015 (4)

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London Mountain Clean Up July 2025 i-1 Introduction MineWater LLC has been working diligently to clean up and restore large swaths of Mosquito Gulch of pre-law mine waste. The initial efforts of this are occurring at the London Mine 110D, where MineWater LLC is processing material to identify and separate metal bearing materials from inert rock from pre-law mine dumps near the historic London Mine portals. The London Mountain Clean Up represents a continuation and expansion of these successful efforts, focused on extending waste pile remediation to all areas of Mosquito Gulch controlled by MineWater LLC and its associates. MineWater LLC seeks to convert the existing London Mine 110D into the comprehensive London Mountain Clean Up 112D while maintaining all established operations and protections of the original 110D permit. It is critical to emphasize that while the London Mine 110D is being incorporated into this conversion application, the technical specifications, operational parameters, and all approved measures of the London Mine 110D remain completely unaltered. The proven success of the London Mine 110D permit serves as the foundation for this expansion. Therefore, the complete London Mine 110D documentation is included in Appendix 1 and referenced throughout this application as appropriate. For clarity, any references to "London Mine" in this document refer to the previously permitted and successfully operating mine under the 110D permit, while references to "London Mountain Cleanup" refer to the proposed expanded 112D permit area. A cursory review of the Mosquito Gulch area shows that there are a large number of pre-law waste piles of unknown quantities from prospecting and mining in this region beginning over a hundred years ago. Since these waste piles can be a source of potentially acid-forming material from pre-law disposal, they have been left alone. Now, with MineWater’s processing operations at the London Mine 110D, these waste piles can be excavated, processed, and reclaimed. This work will remove potential pollutant sources from the natural drainages and slopes of Mosquito Gulch, enhancing the area for its modern uses of recreation and wildlife habitat. The environmental impacts of the London Mountain Clean Up are further detailed in the Environmental Protection Plan, which is located in Exhibit T Section 1.3. The London Mountain Clean Up will ensure the responsible cleanup of the pre-law waste piles in Mosquito Gulch by providing a flexible yet clear set of plans for mining and reclamation regardless of the size or location of the waste piles being cleaned up. Instead of a fixed mining area that may require numerous revisions as piles are identified for cleanup, this permit overlays a roving maximum of mining disturbance that can be divided between multiple locations as needed to facilitate reclamation. The London Mountain Clean Up will disturb no more than 20 acres at a time. It will also maintain no more than 10,000 CY of material actively being worked. Finally, all potentially acid-forming material will be shipped immediately to the London Mine 110D operation for processing. The London Mountain Clean Up will complete with reclamation of each waste pile disturbed to a permanent condition that is stable and environmentally improved. The London Mountain Clean Up is a 1146.9 acre 112 designated mining operation located roughly eight miles west of Alma, CO at an elevation of 11,000 to 13,000 feet. The majority of the affected area