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Southwest District Ventilation Borehole. Powerline and Access Road <br />The Southwest District Ventilation Borehole, Powerline and Access Road will require a minor amount of work in <br />.order to reclaim the sites. The work includes: building and duct-work removal, fan removal, demolition of concrete <br />pads, removal of concrete, sealing the top of the casing, powerline and pole removal, road removal, topsoil <br />replacement, and seeding. <br />It is anticipated the ventilation shaft, and access road will have a useful life of approximately three years, or until <br />the last panel in the SW District has been mined out. The building, duct-work, fan, powerline and poles have been <br />removed from the site. The borehole has been permanently sealed. The concrete pads have been broken up and <br />properly disposed of. <br />Final reclamation of the 36-inch diameter casing involved placing afive-foot cement plug at the bottom of the <br />cased hole. The casing was backfilled from the plug to within 10 feet of the surface. The top 3 feet of the casing <br />was cut off, a 7 foot cement plug was placed in the remaining casing, and the remaining 3-foot hole backfilled with <br />subsoil. The access road was graded to blend with the surrounding terrain, and the culvert removed. The <br />ventilation borehole pad and access road were topsoiled and seeded with the appropriate seed mixture. <br />0-Entry Ventilation Shaft <br />The 0-Entry ventilation shaft reclamation work will require building and duct-work removal, fan removal, <br />demolition of foundations, removal of concrete, sealing of the shaft, regrading of the fan site, and replacement of <br />plant growth media. It is anticipated that this fan will remain until all mining operations have been completed at the <br />Foidel Creek Mine. <br />Final reclamation of the shaft will involve will involve construction and placement of apre-fabricated framework of <br />steel support beams, steel composite decking and 4 inches of concrete to be placed approximately 10 feet below grade. <br />Prior to construction of and placement of the decking, however, the concrete foundation will be broken up and put <br />down the shaft. The support beams and decking will be suspended from the concrete liner by steel straps (i.e. I-beams <br />or similar support structures) welded to the support beams. The steel straps will be tied into notches cut-out of the top <br />of the liner. Once this is completed, a 24-inch thick reinforced concrete slab will be constructed over the previously <br />placed slab and decking. The void from on top of the concrete slab to within 5 feet of the surface will be backfilled <br />with fill material (approximately 20 CY) from the surrounding azea. The next 2 feet of the shaft will then be filled <br />with concrete to form a top plug for the shaft. Fill material will be placed in the remaining 3 feet of the shaft <br />(approximately 22 CY) and then the plant growth media placed over the site. <br />The duct-work, buildings and foundation materials will be removed and placed in the backfilled portal azea. The <br />materials will be crushed to minimize the volume to be added to the pit. The materials will then be covered during <br />the backfilling of the facilities. The material excavated from the site and placed in the Equipment Storage azea will <br />be returned to the site. It is anticipated the material will be dozed back to the site and sloped to conform with the <br />approved postmining topography. The plant-growth material will be returned to the site and seeded. The fan and <br />power-poles will be removed from the property and placed in an appropriate landfill. <br />Washolant Powerlines <br />When the washplant powerlines are no longer needed, they will be dismantled and the powerline components <br />removed from the site. <br />Washolant Waterlines <br />When the washplant waterlines are no longer needed, the surface portion of the waterlines, pumphouse and power <br />line will be dismantled and removed from the site. Buried portions of the pipelines will be stubbed-off below <br />grade, capped, and buried. <br />TR07-59 2.05-104 02/27/07 <br />