2009-11-13_PERMIT FILE - C1982056A (7)

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VI. Other Light-Use Roads • In addition• to the above light-use roads, a number of other roads of this classification aze located azound the property. The other roads include the following: Low Quality Coal Stockpile Road, West Gate Road, Fish Creek Borehole Road, Escape ShaftJBorehole Site Road, EMD Dewatering Borehole Road, and Lieske Substation Road. Al] of these roads are shown on Map 24A and have been designed and constructed in conformance with Rule 4.03.3. General No bridges are planned with this permit revision application. All culverts with an end area of less than 35 square Meet will be designed to pass, at a minimum, the 10-yeaz, 24-hour event. Should a culvert with an end azea greater than 35 square feet be needed, it will be designed to safety pass the 20-yeaz, 24-hour event. The culverts have also been designed and constructed to sustain the vertical soil pressure, the passive resistance, and the weight of the vehicles using the road. Trash racks and debris basins will be installed where needed to avoid plugging, collapse, and erosion at culvert inlets and outlets. Culverts for road surface drainage were installed as specified in Rule 4.03.2(4)(e)(v). These culverts cross the road at not less than a 30-degee angle, and will be protected at the inlet and outlet by rock riprap, if required. The culverts aze covered by compacted fill to a depth of at least 1 foot., No natural dminage channels will be altered with this permit revision application. All natural drainage channels will be crossed using culverts of adequate size, so as not to affect the normal flow or gradient of the stream. Drainage from the access/haulroad will meet the requirements of Rule 4.05. The roads have been constructed and will be maintained to minimize erosion. The water-control systems have been designed to safely pass, at a minimum, the peak runoff from a 10-year, 24-hour precipitation event. All vegetative material and topsoil will be removed from all embankment foundations during construction to • increase stability. Topsoil was and will be stockpiled in accordance with Rule 4.06.3 for use in final reclamation operations. Embankments aze not steeper than 1v:1.5h. Cut slopes will not exceed the above-specified standards. Temporary check-dates, diversion ditches, etc., were built, as required, during road construction to maintain water quality standazds throughout the construction period. All cut slopes will be seeded to aid in establishing vegetation and to minimize erosion. All embankment slopes have been mechanically stabilized and will be seeded to aid in establishing vegetation and to minimize erosion. Mechanical stabilization consisted of furrowing and "cat- tracking". The stabilized slopes will be broadcast seeded during the first appropriate planting season. Unless otherwise approved by the CDMG, TCC will reclaim all roads on completion of active mining operations. Natural drainage patterns will be restored, with all culverts removed. Roadbeds will be rounded and shaped to blend with the surrounding topography. The affected areas will be topsoiled and revegetated to meet the requirements of Rule 4.15. Given the azea encompassed by TCC's Permit Boundary, there were a number ofpre-existing ranch roads in-place prior to any mining disturbance, as shown on the Surface Facilities and Freshwater Systems Map (Map 24, Sheets 1 through 3). These roads have not been modified or improved in conjunction with ongoing mining operations. The roads are utilized by grazing lessees and others for general land management activities and may be utilized, without modification, to access hydrologic monitoring sites. These roads will be retained to support land management activities following completion of mining operations, and TCC has no reclamation obligation relative to these pre- existing roads. The transport system of the Fish Creek Tipple operation consists of a railroad spur, haulroad, access roads, and light use roads. The location, construction, use, and maintenance of these aze further detailed on pages 2.05-7 through 2.04-14 of Volume VIII. • PR06-07 2.05-74 1 I/07/06