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been designed and constructed to sustain the vertical soil pressure, the passive resistance, and the weight of the <br />vehicles using the road. Trash racks and debris basins will be installed where needed to avoid plugging, <br />collapse, and erosion at culvert inlets and outlets. Culverts for road surface drainage were installed as specified . <br />•in Rule 4.03.2(4)(e)(v). These culverts cross the road at not less than a 36- degree angle, and w ill -be protected at <br />the inlet and outlet by rock riprap, if required. The culverts are covered by compacted fill to a depth of at least 1 <br />foot. <br />No natural drainage channels will be altered with this permit revision application. All natural drainage channels <br />will be crossed using culverts of adequate size, so as not to affect the normal flow or gradient of the stream. <br />Drainage from the access /haulroad will meet the requirements of Rule 4.05. The roads have been constructed <br />and will be maintained to minimize erosion. The water - control systems have been designed to safely pass, at a <br />minimum, the peak runoff from a 10 -year, 24 -hour precipitation event. <br />All vegetative material and topsoil will be removed from all embankment foundations during construction to <br />increase stability. Topsoil was and will be stockpiled in accordance with Rule 4.06.3 for use in final <br />reclamation operations. Embankments are not steeper than lv:1.5h. Cut slopes will not exceed the above - <br />specified standards. Temporary check -dams, diversion ditches, etc., were built, as required, during road <br />construction to maintain water quality standards throughout the construction period. All cut slopes will be <br />seeded to aid in establishing vegetation and to minimize erosion. All embankment slopes have been <br />mechanically stabilized and will be seeded to aid in establishing vegetation and to minimize erosion. <br />Mechanical stabilization consisted of furrowing and "cat- tracking ". The stabilized slopes will be broadcast <br />seeded during the first appropriate planting season. <br />Unless otherwise approved by the CDMG, TCC will reclaim all roads on completion of active mining <br />operations. Natural drainage patterns will be restored, with all culverts removed. Roadbeds will be rounded and <br />shaped to blend with the surrounding topography. The affected areas will be topsoiled and revegetated to meet <br />the requirements of Rule 4.15. <br />• Given the area encompassed by TCC's Permit Boundary, there were a number of pre- existing ranch roads in- <br />place prior to any mining disturbance, as shown on the Surface Facilities and Freshwater Systems Map (Map 24, <br />Sheets 1 through 3). These roads have not been modified or improved in conjunction with ongoing mining <br />operations. The roads are utilized by grazing lessees and others for general land management activities and may <br />be utilized, without modification, to access hydrologic monitoring sites. These roads will be retained to support <br />land management activities following completion of mining operations, and TCC has no reclamation obligation <br />relative to these pre- existing roads. <br />The transport system of the Fish Creek Tipple operation consists of a railroad spur, haulroad, access roads, and <br />light use roads. The location, construction, use, and maintenance of these are further detailed on pages 2.05 -7 <br />through 2.04 -14 of Volume VIII. <br />TR09 -66 2.05 -74.3 02/17/09 <br />