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Any Ute lady's tresses that might be present within the proposed <br />lease area would not be impacted by proposed operations. The only <br />potential habitat for this species occurs along the floodplain of <br />Fish Creek, outside the area proposed for mining-related <br />disturbance (OSM, 1993). <br />Wildlife <br />Raptor Heats in the cliffs of the Twentymile Sandstone may be <br />disturbed by rock falls or elides and increased spelling of the <br />cliff face due to increased stress from subsidence.. TCC ie <br />committed to working with the Colorado Division of Wildlife and the <br />U.S. Fish and Wildlife Service (DSFWS) to conduct Heating surveys <br />prior to mining under the cliffs if mining is to occur during any <br />Heating aeneon (February to July). if nn active rnptor neat is <br />identified for a species of interest, then the USFWS will be <br />contacted so that a permit can be obtained to take the neat (Cyprus <br />Twentymile Coal Co., 1993). Any activity affecting the neat, such <br />as relocation, would then be supervised by USFWS, mitigating <br />potential impacts to the fullest extent possible. <br />Bald eagles that mny migrate through the proposed lease area would <br />not be impacted by proposed operations. The only potential habitat <br />for this species occurs along Fieh Creek, outside the area proposed <br />for mining-related disturbance. The Colorado squawfieh, humpback <br />chub, bonytail chub, and razorback Bucker do not occur within the <br />proposed lease urea, but water depletion within the upper Colorado <br />River basin ie thought to cause a negative impact to these fish <br />species. Mining activities at the Foidel Creek Mine, including <br />those anticipated for the proposed lease area, would consume up to <br />157.7 acre-feet of water from the basin each year. Proposed mining <br />activities would have ^no affeet^ on the statue of the four <br />endangered fish species because water augmentation and deep aquifer <br />pumpage proposed by TCC would be sufficient to affeet any water <br />loot during mining activities (OSM, 1993). <br />No impact is expected to occur to <br />habitat in Fieh Creek, big game or <br />thickness of the overburden. (See <br />coneequencee for Vegetation.) <br />the greater sandhill crane <br />grouse habitat due to the <br />the section on environmental <br />Cultural <br />Assuming that areas within the lease covered by Quaternary and <br />Recent sediment will indeed subside in a uniform manner, those <br />portions of the lease area that have not been inventoried need not <br />be inventoried at this time and no mitigative excavation of <br />eligible open campsite SRT32 is needed at this time. The mine plan <br />permit should stipulate that in the event that cracks are observed <br />during the early stages of mine operatlon within the proposed lease <br />area, mitigative excavation of SRT32 and additional surface <br />inventory will be required. <br />According to a stability analysis of the sandstone cliff in which <br />rockehelter SRT345 is located, subsidence resulting from mine <br />operation is likely to cause structural failure and ensuing <br />downslope movement of rock debris. In order to mitigate the <br />adverse affect of exfoliation of sandstone causing damage to the <br />rock art, the rock art should be thoroughly mapped, drawn, and <br />photographed to archival standards and cultural affiliation <br />interpretetl. The rockehelter ie located at the base of a sandstone <br />cliff in Hazard Zone 6 beneath an arcuate rock failure zone (ROee- <br />14 <br />