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� � RECLAMATION ����� <br /> =,.`� "�����=~"_~ �°�� " "��"= PLAN <br /> Reclamation would be carried out progressively or concurrently with mining activities because of <br /> the need to dispose of inert, un-economic rnotehe| (\ntnaburden/ovenburden) as mining <br /> progresses. Overburden and intr@bundenhnnn each successive mining stage would be baokfi|!ad <br /> and stockpiled in the area of the depleted stage above the area of active mining. <br /> {ntr3burden/Ovgrburd8nStOrage areas would be partially removed and used as bockfi|{ material <br /> for the final pit GrS8a, with remaining material regraded to a 2.5H:1V (or flatter) Slope. To create <br /> 8 final surface that nnirniCS natural topography, extremely long slopes would be shortened by <br /> creating a bench or grade break and periodic downslope channels would be incorporated into the <br /> reclamation grading. Drawing 11 shows conceptual reclamation grading for the pits and roads <br /> included with this Modification. <br /> Following active mining and pit reo!Srn8ti0n, haul roads would be regraded to expose ou|verte, <br /> using excavated material as backfi|| in remaining ren|onx8hOn activities for the pits and roads. <br /> Culverts would be removed and native drainage channels would be re-established at pre- <br /> construction grades (ranging from grades |aSs than 5% to over 5096) Erosion protection <br /> measures such as rock vortex weirs or ripnapvvuu|d be installed an necessary based on the <br /> conditions encountered during channel grading. <br /> Bockfi{| material in all reclaimed slope areas would be compacted and sloped at o 2.5H:1Va|ope. <br /> and track-walked with G dozer Or similar equipment to roughen the n}o|8inned slope prior to <br /> n8veget8timn. Track-walking and nevagetebng nac|@irned 8|DpeS vv0u|d limit erosion and pn}rncte <br /> surface water infiltration. Growth medium stockpiled from clearing operations would be placed on <br /> the re-sloped areas in layers of 6 to12 inches. The reclamation seed mixture used with successful <br /> current nao|arnabon efforts would be seeded during the he|| months. If the accumulation of growth <br /> medium stockpiles exceeds the on-going reclamation and ravegetation requirement (not <br /> entioipeted), excess growth medium stockpiles would also be seeded during the fall months to <br /> facilitate stabilization. <br /> Juniper and pinion trees cleared ahead of the active mining area would be utilized in the <br /> reclamation pn]ceeS, placed perpendicular across naC|ainoed slopes. Pinion and juniper S|8eh <br /> cleared at the Lower Pit have historically added success to r*vegetation plots. The technique has <br /> consisted of placing slash over plots graded with volcanic ash growth medium and then seeding <br /> the p|OL The slash has shown to aid reveget3bOn by providing shade for the early Seed||ngs, <br /> helping to stabilize and control erosion of the ploto, and eventually adding organic nutrients back <br /> into the soil. <br /> Table 3.1 lists required information and where itcan be found in the provided reclamation maps. <br /> 30 <br />