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The shaft and borehole developed to serve the 9 -Right and 10 -Right gate -road barricade chambers are located in
<br />Sections 22 and 21 respectively as depicted on Figure 16B. Both sites are located on previously cultivated croplands.
<br />Each site was accessible from existing ranch roads located in the general vicinity. No access improvements were
<br />required, providing the sites were accessed and developed during dry weather or periods when the ground was
<br />frozen. No regular periodic access requirements pertain to these sites. In the event of poor ground conditions during
<br />development or for subsequent access to these sites, TC retained the flexibility to windrow topsoil from the access
<br />routes, as appropriate, to assure protection of the topsoil resource.
<br />Surface disturbance for each site is minimal and consists of an area encompassing approximately 100 x 100 feet.
<br />Topsoil from the drill -pad and mud -pit areas was salvaged and stockpiled adjacent to each drill -site. Approximately
<br />26 inches of the Binco silty clay loam was salvaged, based upon the existing soils mapping for each site. Following
<br />topsoil salvage, each drill -site was leveled and mud pits developed. Site drainage was configured to contain surface
<br />runoff from the site within the mud -pit areas. Secondary sediment control measures consisting of silt fences or hay
<br />bales were utilized as necessary to minimize sediment transport from each site. For both the shaft and borehole, the
<br />shaft collar and casing extend above ground elevation. Protective shelters/covers of wood frame and/or metal
<br />construction were constructed on concrete foundations over the shaft and borehole casing. Following completion of
<br />drilling activities, the mud pits at each site, once suitably dry, were backfilled. The sites were regraded, topsoil
<br />redistributed, and the areas seeded with the appropriate seed mix at the first appropriate seeding opportunity.
<br />Given that the Barricade Chamber is no longer needed for mine safety purposes (function is now addressed by mine
<br />escapeway plans utilizing fresh -air returns and escape elevators), the Barricade Chamber and associated shaft have
<br />been sealed, with bulkheads at the top and bottom of the shaft, are now used for mine water storage, and the
<br />protective shelters have been demolished, with the foundations remaining in-place. The shaft collar and borehole
<br />casings are now covered by locked steel caps, as a security and safety measure. Existing mine water transfer
<br />pipelines connect to the Barricade Chamber/FCM-2 boreholes from the Fish Creek Water Treatment Facility and
<br />IORT Dewatering Wells, allowing water to be transferred from these locations to the mine water system. An
<br />additional transfer pipeline, approximately 8,560 feet long, will be extended from the Barricade Chamber/FCM-2
<br />boreholes to the new Fish Creek/Area 1 Pit Transfer Pipeline, to allow water to be transferred directly from this
<br />location to the Area 1 Pit Mine Water Storage Reservoir. The pipeline will be laid in existing pipeline and road
<br />corridors to minimize new disturbance, and will be welded 12 -inch HDPE pipe, buried approximately 5 feet deep,
<br />connecting to the Fish Creek/Area 1 Pit Transfer Pipeline at a CMP or concrete culvert manhole enclosing the
<br />pipeline control valves. For all pipeline construction, soil material will be removed and temporarily windrowed
<br />on one side of the trench, with trenched material placed to the other side. Once the pipeline is placed, properly
<br />bedded, connected, and leak tested, trenched material will be backfilled and compacted, and soil material will be
<br />replaced over the excavation and reseeded.
<br />When the Barricade Chamber/FCM-2 facilities are no longer needed to support ongoing or future mining operations,
<br />the shaft and borehole will be plugged and sealed, the shaft collar and borehole casing will be demolished or cut-off
<br />a minimum of three feet below the ground surface, the hole locations will be marked, remaining foundations will be
<br />removed, and the disturbed areas will be regraded to blend with the surrounding terrain, stockpiled topsoil will be
<br />replaced, and the areas will be reseeded. It is anticipated that when the pipeline is no longer needed to support
<br />mining and related operations, it will be plugged below grade and abandoned in-place.
<br />10RT Dewatering Wells (Eastern Mining District) MR16-299
<br />The l ORT dewatering system (original) consists of two primary components: 1) Dewatering wells and control
<br />building (existing), and 2) Treatment facility (future). The initial dewatering well was drilled to connect into the
<br />sump developed off the 10 -Right entry. Please refer to Map 23, Mine Plan, for the location of the sump. A light-
<br />duty road was constructed to the site, beginning at the proposed treatment facility and terminating at the borehole.
<br />The beginning 1,600 feet of this road required new construction, while the remainder of the road involved
<br />upgrading an existing ranch road. The location of the access road is shown on Maps 17 and 18. As shown on the
<br />maps, the overall road length is approximately 4,600 feet. This location of the initial 1,600 feet of the road differs
<br />slightly from the original proposal to improve visibility and safety at the road entrance.
<br />MR16-299 2.05-50.5 06/16/16
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