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LONDON MINE <br /> M-2023-015 <br /> Exhibit D—Rule 6.3.4 <br /> Reclamation Plan <br /> The post-mining land use of this site is Commercial/Industrial. Past disturbances included historic mining <br /> and processing, recent water quality activities,and finally the moving and sorting of old mine waste. <br /> There was no previously-unaffected area within this permit; no native ground with soil to salvage, no <br /> vegetation to re-establish. The reclamation of this site concentrates on stabilizing these lands to <br /> minimize surface runoff and ground percolation of mineralized water,offsite silt transport,and erosion. <br /> The onsite roads which pre-existed here were maintained during the mining stage and will remain as <br /> permanent features. The permanent onsite buildings were maintained and will remain onsite. <br /> All fuels,fluids,storage tanks and any contaminants will be removed from the site and disposed of in <br /> proper, licensed facilities as needed. All temporary structures will be removed from the site. Wooden <br /> waste materials will be legally burned or removed to a licensed landfill site as necessary. Any inert solid <br /> waste materials,such as concrete or stone will be broken as needed and buried onsite. Stockpiles of <br /> mineralized material will be removed;less-or non-mineralized materials will be placed in permanent <br /> disposal cells in stable configurations and locations. These areas are shown on the Reclamation Map in <br /> Exhibit E. <br /> The owner has requested that the Sorting Plant building remain on-site after completion of these <br /> permitted activities as it is a general purpose building. <br /> Runoff and sediment control structures,whether pre-existing or constructed for this operation,will most <br /> likely remain permanently on the site,due to the overall degree of disturbance,the surface slopes,and <br /> the proximity to Mosquito Creek. This is shown on the map in Exhibit E. <br /> Backfill will be placed and smoothed in stable lifts with the slope comprised of inert sorted product <br /> material, placed by loader or compacted dozer lifts. The surface will be sloped at 2H:1V as shown in <br /> Exhibit E Reclamation Plan. <br /> As native material is exposed,fine grained soil-like material will be excavated and stockpiled on the <br /> upgradient side of the area.Once material is excavated and stockpiled,soil tests will be conducted by a <br /> third-party laboratory to determine soil quality and what amendments if any are needed. <br /> If native soil horizon beneath the South London Stockpile area is impaired, it will be due to depletion of <br /> organic matter content and nutrients from being covered for many decades.Applicant will amend the <br /> fine-grained material with necessary compost and fertilizers as needed to provide support for <br /> revegetation of the final cover. <br /> The Central Extension Stockpile area(estimated 1.3 acres)and the South London Stockpile area <br /> (estimated 4.3 acres)will be stabilized by placement of 3"of fine—grained materials amended if needed <br /> with compost and fertilizer,and seeded with approved native seed mix. <br />