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<br /> <br />London Mountain Clean Up <br />July 2025 <br /> <br /> <br />T-3 <br />MineWater LLC respectfully requests that the Board recognize that the removal of these pre-law waste <br />piles from their current locations in the Mosquito Gulch area will provide substantial net improvements <br />to the environmental conditions of the site and surrounding area. These improvements will result from <br />the removal of potentially toxic or acid-forming materials from the Mosquito Gulch and wildlife habitats, <br />eliminating long-term sources of environmental contamination that have remained unaddressed since <br />the original mining activities. The operation will enhance wildlife habitat quality through the proper <br />placement of clean soil materials and comprehensive re-vegetation of currently barren locations that <br />have remained devoid of productive vegetation due to the presence of contaminated materials. <br />Additional environmental improvements include the elimination of potential pollution sources, <br />restoration of natural drainage patterns, improvement of vegetation, and enhanced suitability of the <br />area for modern beneficial uses including recreation and wildlife habitat. The systematic cleanup <br />approach will address contaminated areas that have been left unmanaged for decades, providing <br />environmental restoration that would not otherwise occur. The operation will disturb no more than 20 <br />acres at any given time while maintaining no more than 10,000 cubic yards of material actively being <br />worked, ensuring that environmental impacts remain localized and manageable while cleanup proceeds <br />efficiently. <br />1.4. 6.4.21 (2) Maps <br />The maps described and enclosed in previous exhibits provide comprehensive documentation of the <br />operation's scope and environmental protection measures. Map C-1 identifies the likely locations of <br />waste piles that will be addressed during cleanup activities. While this map represents the best <br />available information based on current site assessment, it is not exhaustive. Reference Section 2.5 of <br />Exhibit D for the complete general mining plan and comprehensive identification methodology for waste <br />piles. Map C-1 also details onsite and surrounding structures along with associated property owners to <br />provide context for operational planning. The vast majority of the land adjacent to the affected area is <br />undeveloped alpine countryside. <br />The mining processes detailed in Map C-2 demonstrate environmentally protective extraction methods <br />for waste pile materials. These processes specifically incorporate stormwater berms and runoff <br />regulation systems to prevent environmental impacts during mining operations. Transportation routes <br />will be selected to minimize impacts on local communities while utilizing existing infrastructure capable <br />of safely accommodating anticipated traffic volumes. <br />Engineering drawings referenced in Map C-2A show the precise placement and configuration of <br />stormwater control and diversion structures. These drawings provide specific technical guidance for <br />construction and maintenance of these critical environmental protection features, ensuring compliance <br />with water quality protection standards. <br />Sediment control placement details ensure comprehensive containment of all work areas, preventing <br />off-site migration of disturbed materials. Designated topsoil storage locations provide secure, properly <br />designed areas for preserving valuable soil resources that will be utilized during reclamation activities.