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As shown on Map 26, two new culverts will be installed and they are identified as culverts numbered 50 and S 1. The • design for these culverts is contained in Exhibit 18. Also, the design for ditch 9-D14 and modified ditch 9-D7 is contained in Exhibit 18. The mine discharge will flow through ponds 9-P2 and 9-P3. These ponds will allow 12.8 hrs. detention time in addition to the sump settling time. The ditch between ponds 9-P2 and 9-P3 will be reconstructed and a ditch will actually be cut in and conveyor belting laid in the bottom of the ditch. In order to facilitate handling of the mine discharge, the upper section of ditch 9D-12 will be removed along with culvert number 20. The ditches have been designed to handle the additional runoff from this area. A power line will be constructed between the existing YVEA line and the borehole. This extension is shown on Map 26. 9P-2 to SA Waterline RAG EC plans the installation of a buried 4" poly-pipe waterline, pump, pump, pumpshed, intake line, and powerline extension at pond P-2. Water will be pumped from pond 9P-2 via the 4" buried line to the existing water storage tank at the SA portal area. From this tank, the water will be put through the existing distribution system. Water is provided to Pond P-2 from the 7 North Angle mine dewatering pump. RAG EC plans to install askid-mounted pump along the south side of pond P-2. This pump will be protected by a metal or wooden shed approximately 10' x 1' x 8'H, and will be surrounded by a six foot high chain link fence. Power will be supplied to the pump by means of an extension from the existing powerline adjacent to the SA access road to the north of the pond. This powerline extension will entail the installation of4 to 6 poles and the powerline will be suspended from these poles. An intake line will be placed in the pond, and will be fitted with a check valve and strainer head. Both the intake line and the 4' receiving line will be buried to a depth of approximately six feet. The line will be buried using a trenching machine, and will follow an existing two-toe of the access road outslope. A dozer may be required for ripping of some short segments along the roadway to allow the trenching machine to install the line from the staging area over to the 100,000 gallon tank. Approximately 6,090 feet of line will be installed, with a substantial portion of this being required to allow the waterline to parallel the access road. Due to the buried nature of the line, RAG Empire plans to leave most of the line buried in place during final reclamation activities. It is planned that the pump, pumphouse, fence, intake line, and powerlines would be removed. The ends of the buried line would be excavated, cut back, plugged, and backfilled. Line segments on the surface or less than 3 feet in depth would be removed, but these will be limited to the transition portions on the very ends and at the tank and pump tie-in points. Main Haul Road Since there are no surface mining activities associated with the Eagle mines, coal is transported from the property primarily by rail; the main haul road is no longer used for haulage of coal in off-road haul trucks. Waste material as well as coarse reject is hauled over the main haul road to the waste disposal site, and highway legal trucks use the main road to access Highway 13. Williams Fork River Bank Stabilization During the spring runoff of 1984, the Williams Fork River overtopped its banks, resulting in bank erosion. In order to protect the riverbank and mine facilities, RAG Empire placed riprap on selected sections of the Williams Fork River bank. Details of [he bank stabilization plan can be found in the United States Army Permit (33CFR325) located in Exhibit 2, Other Required Permits. ..~ ~ - , _.,-. ' .~ MidTerm Response 2.05-13 ,~ ~-a~'~ Revised 12/05/01