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the fall of 1999 that had experienced damage due to subsidence of Longwall Panels 5R <br />and 6R. Twentymile Coal scaled loose rock from the slope above Routt County Road <br />No. 33 prior to undermining Longwall panel 12R, and placed temporary concrete <br />barriers or chain link meshing along the north side of Routt County Road No. 33, to <br />ensure that rockfall would not reach the road. <br /> <br /> Union Pacific Railroad <br /> <br />When daily monitoring indicated that the track was damaged or the grade had <br />changed, a slow speed restriction was instituted. Re-leveling and repair of the track <br />occurred in accordance with mitigation plans required by Union Pacific Railroad. <br /> <br /> Hayden-Gore Pass Powerline <br /> <br />TC notified the utility company 30 days prior to undermining the powerline in addition <br />to the Division’s requirement to provide six months notification prior to undermining. <br />TC monitored the powerline structures daily. The powerline was subsided without <br />interruption or significant damage to the powerline towers. Power company personnel <br />inspected the powerline after subsidence had occurred and found that deformation of <br />the structures was within company specifications and did not require Twentymile Coal <br />to conduct repairs. Information regarding subsidence of the Hayden-Gore Pass <br />powerline can be found in the 1997 and 1998 Subsidence Reports. <br /> <br />Archer-Hayden, Western Area Power Administration, Tri-State, and Public Service <br />Powerlines <br /> <br />A monitoring plan for the Archer-Hayden powerline was approved by the powerline <br />operator and incorporated into Exhibit 7e-7 of the PAP. No significant damage or <br />interruption of power was experienced during the subsidence of the Archer-Hayden, <br />Western Area Power Administration, Tri-State and Public Service powerlines. <br /> <br />Twentymile Coal proposes to subside portions of two powerlines with Western Mining <br />District Longwall panels 13L, 14L, 15L, 16L, and 17L in Township 5 North, Range 87 <br />West, Sections 23 and 26. Twentymile Coal Company has undermined and subsided <br />powerlines in the EMD and NMD without any significant damage or disruption of <br />service. Twentymile Coal anticipates the powerlines overlying Longwall panels 13L <br />through 17L will react in the same manner. <br /> <br /> Existing Residences/Structures <br /> <br />Three residences were undermined and subsided during the mining of Eastern Mining <br />District longwall panels 6R and 5R. One residence is occupied year-round; one is <br />inhabited on a limited basis, while the third was vacant and owned by Twentymile <br />Coal. <br /> <br />Twentymile Coal has a subsidence agreement with the owners of the residences not <br />owned by Twentymile Coal. Twentymile repaired subsidence damage to the smaller <br /> <br /> <br />33 <br /> <br /> Foidel Creek MineOctober 8, 2013 <br /> <br />