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Portal Fan <br />•On completion of mining, the fan and motor will be removed from the foundation and salvaged. The pre-engineered <br />building will be demolished, and the resulting debris buried in the portal area. The duct -work and concrete pad or <br />footers will be left in place and buried during reclamation of the portal area. <br />The associated transformer will be removed from the site and salvaged. The transformer pad will be broken -up, the <br />power -poles will be removed, and the resulting demolition debris will be pushed into the portal excavation and buried <br />during final reclamation. <br />0 -Entry Ventilation Shaft <br />Reclamation of the 0 -Entry Ventilation Shaft will require building and duct -work removal, fan removal, demolition <br />of foundations, removal of concrete, sealing of the shaft, regrading of the fan site, replacement of plant growth <br />media, and reseeding. It is anticipated that this fan will remain until all mining operations have been completed at <br />the Foidel Creek Mine. The fan will be removed from the site and salvaged. <br />Final reclamation of the shaft will involve construction and placement of a pre -fabricated framework of steel support <br />beams, steel composite decking and 4 inches of concrete to be placed approximately 10 feet below grade. Prior to <br />construction of and placement of the decking, however, the concrete shaft foundation will be broken up, and the <br />resulting demolition debris dropped down the shaft. The support beams and decking will be suspended from the <br />concrete liner by steel straps (i.e. I -beams or similar support structures) welded to the support beams. The steel straps <br />will be tied into notches cut-out of the top of the liner. Once this is completed, a 24 -inch thick reinforced concrete slab <br />will be poured over the previously placed slab and decking. The void from on top of the concrete slab to within 5 feet <br />of the surface will be backfilled with fill material (approximately 20 CY) from surrounding areas. The next 2 feet of <br />the shaft will then be filled with concrete to form a top plug for the shaft. Fill material will be placed in the <br />remaining 3 feet of the shaft (approximately 22 CY), graded to blend with surrounding areas, and plant growth <br />• media will be replaced and reseeded. <br />The duct -work, buildings, power -poles, and foundation materials will be removed and placed in the backfilled <br />portal area. The materials will be broken -up to minimize volume and voids and covered during facilities <br />backfilling and reclamation. Material previously excavated from the site and placed in the Equipment Storage Area <br />will be returned to the site. It is anticipated that this material will be dozed back and regraded to conform with the <br />approved postmining topography. The plant -growth material will be returned to the site and seeded. <br />EMD Ventilation Site <br />In 2009-2010, the fans, silencer, supports, and associated buildings were removed from the site and relocated to the 18 - <br />Left Ventilation Installation. Approximately 50 feet of soil material was dozed into the two shafts, and a 15 -foot thick <br />concrete plug was poured in the bottom of each shaft. The concrete pads and footers were then broken -up and placed <br />into the shafts. The remaining void space in the shaft was filled with inert soil material from the shaft pad area, and an <br />additional concrete plug was placed in the interval corresponding to the Twentymile Sandstone, extending 20 feet <br />above and below this unit. The shaft fill material extended to within about 13 feet of the ground surface. A 10 foot <br />cement surface plug will be poured from 13 feet to 3 feet below ground surface, and the top 3 feet was filled with <br />suitable soil material. After the shafts are plugged, the site will be regraded to blend with the surrounding terrain. The <br />stockpiled soil material will then be re -distributed over the site and seeded with a pastureland seed mixture. <br />NW -Mains Ventilation Shaft (TROT -39) <br />When the NW -Mains ventilation shaft and fan installation are no longer needed to support ongoing or future mining <br />operations, the associated surface facilities will be removed, the shaft will be plugged and sealed, and surface <br />• disturbance areas will be reclaimed. The fan equipment, buildings, powerline, and poles will be removed and reused at <br />another location, salvaged, or disposed of off-site. Concrete pads will be broken -up and foundations will be demolished <br />to at least 4 feet below grade, and the resulting concrete debris will be disposed of in the shaft opening. The shaft collar <br />RN08-05 2.05-104 03/12/10 <br />