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Mr. Y.en Schlagel Paye -2- August 31, 1979 will be necessary at the time federal coal is to he mined. The pillar extraction plan is helpful but some indication of the overall sequance of mining is needed on the mine layout map. !Jhat is the overall plan Wing of attack for the fee coal acid o-rhat is the direction of mining? You quince have incorrectly tabled the Mining Plan flap Exhibit D. All surface facilities should be labeled on this map. A coal stockpile is not provided on the bench nor is a refuse disposal area. Exhibit D Ilininq Plan oper References are made to the P,egional Director and Mining Supervisor bu[ thorn y not to the Mined Land Recl~nnation Division as the proper authorities to receive reports of accidents and major mining problems. The Division should be notified as well. deral Developm~-nt of the federal lease tract is mentioned in this mining plan. al This is irrelevant to the mining plan for vrhich approval is sought. A- gain some mention ip this narrative about the plan of attack for re- moving fee coal should be provided. The plan should be coherant and loyical vrith no assumption~f future mining in federal coal. If approval is gained for the federal1lease it o-rill be a simple matter to insert a revised mining plan (in the forthcoming 3 ring binder). USGS will not approve your mining plan, given the absence of federal coal. Have you received 11SFIA approval for your roof bolting plan and ventilation scheme? ~sidence The hlined Land Reclamation Division will not determine the suhsidence monitoring system or control plan. These facets of the mining plan should be included in the mining plan for review and approval by the Division. The major concerns related to subsidence. are disruption of prc;sent or future surface land uses and interruption of subsurface flo•,.rs. A discussion of possible impacts on surface land uses should be provided. Please justify the statement that "subsidence afn~uch as two inches may he expected" (in areas not supported by barrier pillars). 1Jhat geologic data indicates "no aquifers exist in the stratigrapl~y above the E seam? Please, provide this data. logic Mud flows r-rould seem to pose a rather substantial geologic hazzard to cards the surface configuration and portal stability at the Blue Ribbon Mine. There is already evidence of ground movement above the liigh- wall. What provisions will be made to monitor ground movement at [he mine site and to prevent a mud florr~~ienc~r area which could be disastrous to the environment. Exhibit E P,eclamation Plan gh Station Th=_ weigh.station area may have been previously disturbed but reuse by Sunflaver' Eneryy will necessitate site reclamarior.. The area should be scarified to a depth of 2 feet to provide a root zone for plants. The area should be revegetated ~•rith a seed mixture specifically appropriate for the site. Bch Area Greater Detail should be supplied regarding the recreation of a stable hillslope in the higl~rrall backfilliny operation. Issues of proper compaction and surface and subsurFace drainage restoration need to be discussed. Specific plans should be provided. The uppermost layer of (cont'd)