2009-10-13_PERMIT FILE - C1991078A (3)

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2.05.3(31 (c) Roads • Haul Roads Under Rule 1.04, the definition of "Road" excludes any roadway within or adjacent to the immediate mining area. The immediate mining area is defined as the area to be mined during the term of the permit. Under this definition, the Applicant will only have two sections of "haul road" within the permit area. One haul road approximately 9180 feet long will be constructed across the mine permit area in the north south direc- tion. The haul road will follow the route of the existing light use road. This haul road will intersect a county road at the southern tip of the permit area. The two portions of this road which are not within the immediate mining area are; 1) a 400 foot long section between mining Area 1 and Area 2, from stations 34+50 to 38+50 and; 2) the section from the southern edge of the mining area to the county road from stations 1000+00 to 1017+00. Plan and profile views of these two road sections are shown on Drawing Nos. 121 & 124 respectively. Topsoil will be salvaged from a 50-foot wide corridor along the alignment of the haul road prior to the start of construction of the road. In cut and fill sections the strip- ing width will be increased appropriately. Borrow ditches typi- • tally two feet deep and eight feet wide will be excavated on each side of the road surface to provide material for the subgrade of road. Where necessary, depending on the subgrade condition, gravel surfacing will be placed on the road. On the two "haul road" sections four to six inches aggregate base course will be used to surface the road. A Colorado State Department of High- ways Specification, Class 3 aggregate will be utilized. A section view of the road is shown of the Typical Haul Road Section, Drawing No. 118. The road surface will be 30 feet wide. The road gradient will typically be less that 5%. Cut and fill slopes will be constructed using 2H:1V slopes. The haul road is located along flat ridges so it does not cross any significant drainage area. One culvert will be placed under the haul road where it crosses a minor drainage between mining Areas No. 1 and No. 2. The culvert and borrow ditch sizing calculations are presented in Exhibit 9. Drainage from the borrow ditches will be relieved by ditch relief drains on 1000 foot minimum centers as shown on Drawing No. 122. Straw bale sediment traps, or other approved sediment traps, will be constructed at the end of each ditch relief drain to control erosion and sediment. This configuration of sedimentation control should prevent erosion, siltation or pollution of water or damage to public and private property. • 2.05-6 July 1991