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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. <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 /> residence and replaced the larger residence. Persons living in the larger residence <br /> were relocated while mining and structure replacement occurred in the fall of 1999 and <br /> 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. Exhibit 7K submitted with <br /> PR-10 presents the subsidence evaluation and predictions for both Foidel and Fish <br /> Creek. <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, <br /> found beginning on page 37. Exhibit 7K submitted with PR-10 presents the subsidence <br /> evaluation and predictions for both Foidel and Fish Creek. <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 /> 1. 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 <br /> mitigation plan for the segment of Routt County Road 27 that crosses panels 13L, <br /> Foidel Creek Mine 34 August 4,2023 <br />