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~J <br />signs will be of standard design, using durable material that can readily be seen and <br />read in accordance with appropriate regulations. The signs will not be removed until <br />In the footprint of the construction material stockpile, topsoil was stripped to a <br />depth of 12-inches and placed in the topsoil stockpile. The resulting depression along <br />with a perimeter ditch and silt fence are used to treat the run-off from the construction <br />material stockpile. Design of the silt fence for the construction material stockpile (SAE- <br />3) is contained in Appendix M, page M-2. The topsoil stockpile and construction <br />material stockpiles will be seeded with the temporary revegetation seed mix in the fall of <br />each year they are disturbed. No seeding will be necessary if the piles are not <br />disturbed during the year. <br />A sediment drying area is located adjacent to the sediment pond. Sediment <br />cleaned from ditches and the sediment pond is placed in this pile for drying before the <br />material is hauled to a suitable stockpile. Coal mine waste is also stored in this area. <br />Material that does not have a significant coal component will be placed in the <br />construction material stockpile. The maximum capacity of the sediment drying area is <br />1,000 cubic yards. <br />The sediment drying area will be expanded late in 2007 or early 2008 as shown <br />on Figure 2.2.2 so coal mine waste can be stored in the area until a permanent coal <br />mine waste disposal area is permitted and constructed. The capacity of the expanded <br />sediment drying area will be approximately 4,500 cubic yards. <br />2.2.4 Access Control Features <br />Existing fences and signs will be used to control access to the permit area. All <br />after release of all bonds. <br />2-35 <br />Access to and from Colorado Highway 139 will be in accordance with safety <br />• <br />requirements of the Colorado State Highway Department. <br />M°Clane <br />Volume 1 <br />11 /07 <br />