2019-06-28_REVISION - M1977004 (9)

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Homestake Mining Company May 10,2019 Regular(112d)Operation Reclamation Permit Application Package 5.4.2. Proposed Reclamation The following reclamation activities are proposed within the TCRD area: • Minor recontouring and surface preparation to grade out the area and promote positive drainage. • The Cover Placement included the loading, hauling and placement of cover material in preparation of revegetation, included fertilizing and seeding regraded slopes and terraces with the specified seed mix for the Mine. • Piezometers will be maintained for water level measurement and water quality sampling as long as the Water Management OU is in operation. Following reclamation of the Water Management OU, piezometers will be plugged and abandoned using standard procedures or retained for future operating use. Well stickups will be removed and surrounding well pads will be reclaimed and revegetated. All materials removed during wellhead abandonment will be properly disposed of. After surface features of the abandoned wells have been removed, the site will be graded to prepare it for seeding. Existing roads and drainage features within this operable unit are located on private property and will remain open to accommodate general site access and erosion necessities. The TCRD reclamation areas will be regraded to the final topography shown on Exhibit F Map F- 0413, with a section presented on Exhibit F Map F-04C. 5.5. Operable Unit 5: Water Management System The various areas and components comprising the Water Management System are shown on Exhibit F Map F-05A. 5.5.1. Previous Reclamation Previous reclamation activities include the closing and sealing of the Pinnacle Adit and workings from underground operations, and the demolition and removal of the RTP. These areas are considered reclaimed. 5.5.2. Proposed Reclamation The following reclamation activities are proposed within the Sediment Pond and Water Treatment Plant: • Sediment Pond Improvements will be performed consisting of lowering the water level and replacing the Sediment Pond Valves and Risers. • The Water Treatment Plant will be demolished and disposed of, placing recovered material in approved storage areas, and plugging the pipes from the Sediment Dam. • Once water quality standards are achieved,the Sediment Dam will be breached, regrading will be performed to approximate the slopes of surrounding areas, and reseeded. • Water management systems aimed at reducing dissolved uranium load to achieve future surface water quality standards will continue for as long as required. Future uranium load EXHIBIT E-RULE 6.4.5(AMENDED RECLAMATION PLAN) Page 71 HOMESTAKE MINING COMPANY