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4 REGRADING AND TOPSOIL PLACEMENT <br /> Previously disturbed areas comprised of waste rock at the Revenue Mine will be <br /> regraded, as needed to a final 3H:1V maximum slope, where practicable. Grading at <br /> the Revenue Mine area will be accomplished by dozer as much as possible. TSFs will <br /> be constructed at a 3H:1V slope where practicable and topsoil placed on select <br /> portions of the TSFs as shown on Map F-1. However, if needed, the final slope <br /> configuration may be a maximum 2H:1 V slope. The stability of 2H:1 V slopes was <br /> demonstrated in a geotechnical analysis that was provided in Amendment 1, Exhibit T <br /> and again as Attachment 3 to TR-15. Geotechnical laboratory testing and additional <br /> compaction and direct shear tests were conducted on filtered tailings, and estimated <br /> material properties were used to compute stability of the tailings stack using the <br /> SLIDE program. The results indicate a factor of safety (FOS) of 2.17 under wet <br /> conditions. <br /> A mine access road will remain after reclamation to facilitate the post-reclamation <br /> monitoring, passive treatment pond maintenance, and industrial wastewater outfall <br /> sampling until such time reclamation goals have been met and sampling is no longer <br /> required. The ore pad will be buried with tailings prior to the final capping of the <br /> Revenue TSF. <br /> Topsoil placement will be limited to areas of new disturbance. Topsoil available on <br /> site is limited to approximately 1,000 to 1,500 cubic yards; importing approximately <br /> 4,001 cubic yards will be necessary for reclamation of the TSFs as shown on Map F- <br /> 1. The upper bench of the operations area will be left as a commercial site for the use <br /> by the landowner, and therefore will not be capped with topsoil. Table E-3 shows the <br /> topsoil requirements for the entire site. <br /> Exhibit E Reclamation Plan E-8 <br /> Amendment 02 <br /> December 2021 <br />