2012-02-28_PERMIT FILE - C2009087A (4)

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RULE 2 - PERMITS Portal Ramp (Road F) — As an in -pit road, the portal ramp will extend from the mine facilities area to the base of the mine face -up, as shown on Map 2.05.3 M1A. The road extends a distance of approximately 900 feet. The portal ramp will be a maximum of 60 feet wide, and will be constructed in undisturbed ground during excavation of the face -up area. The portal ramp will be utilized for transportation of men, equipment, and supplies from the mine facilities area to the mine portals and for the transportation of coal during the initial start up while the main conveyor is being constructed. With the exceptions of sub -base and base construction, the portal ramp will be constructed in the same manner and to the same specifications as an access road, with the road surface consisting of a 12 -inch gravel base and 6 inches of gravel surfacing. An MSHA safety berm will be established and maintained on the sides of the portal ramp, as appropriate. Appropriate as -built certifications for the mine access roads and haul roads will be developed and provided to the CDRMS when road construction is completed. All roads and associated drainage structures and safety features will be inspected on a periodic basis, with any necessary repairs to be completed in a timely manner. Normal road maintenance will involve periodic grading, watering or application of surfactants to control dust, placement of additional surfacing material, clean -out of road ditches and culverts, and repair of any significant erosion or damage. When a road is no longer needed to support ongoing or future mining and related operations, the road will be removed and the associated disturbance area reclaimed unless approved as a permanent postmining road. For those roads to be removed and reclaimed road surfacing materials and culverts will be removed and the road and associated drainage features will be reclaimed by ripping, scarifying and grading road surfaces, fills and ditches to blend with the surrounding terrain and reestablish effective drainage. Available stockpiled soil materials (or available suitable plant - growth media if historic roads are located where soil was not salvaged) will then be replaced and reseeded with the appropriate revegetation seed mix. Ponds Impoundments, and Diversions General drainage and sediment control plans, including descriptions, maps, and cross - sections, as appropriate, are presented in the following sections. As appropriate and where required, design information has been certified. Analysis of potential subsidence effects is not required since all designed structures are located outside of potential subsidence areas. Detailed design plans including any required geotechnical investigations, descriptions of operating and maintenance requirements and removal/reclamation requirements are described or referenced in the following sections. These plans are designed in accordance with the provisions of Rule 4.05. Specific design requirements for sedimentation ponds and temporary and permanent impoundments are addressed by discussion or reference in the following sections. No need for any stream diversions is anticipated at this time. A 100 -foot stream buffer zone, consistent with applicable provisions of Rule 4.05.18, will be established along Little Grassy Creek, identified with appropriate signage, and maintained to prevent disturbance to the stream and associated vegetation communities. The stream buffer zone markers will be placed and maintained in accordance with applicable provisions of Rules 4.02.4 and 4.02.5. The drainage and sediment control system for the PSCM is shown on Map 2.05.3 M4, Drainage and Sediment Control Plan. There are four existing ponds, the PECOCO Pond, and Sediment Ponds 002, 003, and 004. These ponds are currently approved structures that were originally used to support mine activities at the closed Seneca II Mine. Ponds 002, 003 and PECOCO Pond are TR- 01 -10. 2.05 -22 Revision 02/11