Laserfiche WebLink
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 /> <br /> Foidel Creek/Middle Creek <br /> <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 /> <br /> Fish Creek <br /> <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. <br /> <br /> Lieske headgate and USGS water monitoring site 700 <br /> <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 /> <br /> Routt County Road No. 27 <br /> <br /> <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 />14L, 15L, 16L, and 17L. The applicant has committed to monitoring and making <br />needed repairs in accordance with its agreement with the county. <br /> <br /> Gertie #1 and Livestock #2 Springs <br /> <br /> <br />1.The applicant has predicted that in a worst-case scenario, mining in the Western <br />Mining District may cause the potentiometric surface of the Twentymile Sandstone <br />to drop to a level that causes two natural springs, the Gertie #1 and the Livestock <br />#2, to dry up. In accordance with Rule 2.05.6(6), the applicant has proposed a <br />subsidence mitigation plan for the springs in the form of a commitment to install <br />impoundments at the spring locations in the event mining reduces flows in the <br />springs. <br /> <br /> <br /> <br />34 <br /> <br /> Foidel Creek MineOctober 8, 2013 <br /> <br />