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powerlines overlying Longwall panels 13L through 17L shall react in the same <br />manner. <br />Existing Residences/Structures <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 Company. <br />Twentymile Coal Company has a subsidence agreement with the owner of the <br />residences not owned by Twentymile coal Company. Twentymile repaired subsidence <br />damage to the smaller residence and replaced the larger residence. Persons living in <br />the larger residence were relocated while mining and structure replacement occurred in <br />the fall of 1999 and spring of 2000. <br />Foidel Creek/Middle Creek <br />No specific subsidence control plan is proposed for Foidel Creek or Middle Creek. <br />Recommendations presented in Exhibit 7i, Subsidence Effects on Streams, call for <br />channel morphology to be evaluated if headcutting or incising of the channel occurs <br />for more than 400 feet from the point of origin of the headcut. Any proposed <br />mitigation would be based on the results of this evaluation. <br />Fish Creek <br />Twentymile Coal Company proposes to undermine and subside Fish Creek and its <br />associated alluvial valley floor. Further discussion of subsidence of the Fish Creek <br />and its AVF is discussed in Section XVIII. Operations on Alluvial Valley Floors found <br />beginning on page 37. <br />Lieske headgate and USGS water monitoring site 700 <br />These two structures were monitored to detect damage or improper function. If <br />mining impaired the function of these structures, Twentymile Coal Company <br />committed to re-align or re-level the structure, as necessary, prior to seasonal use. <br />Routt County Road No. 27 <br />Twentymile Coal Company proposes to subside portions of Routt County Road <br />No. 27 with Western Mining District Longwall panels 13L, 14L, 15L, 16L, and <br />17L in Township 5 North, Range 87 West, Sections 23 and 26. Routt County <br />Special Use Permit, PP2009-008, specifies signage, monitoring, and mitigation <br />measures required by the County for subsidence impacts to the county road. In <br />accordance with Rule 2.05.6(6), the applicant has proposed a subsidence control <br />plan for the segment of Routt County Road 27 that crosses panels 13L, 14L, 15L, <br />16L, and 17L. The applicant has committed to monitoring and making needed <br />repairs in accordance with its agreement with the county. <br />Foidel Creek Mine 35 June 4, 2010