2021-08-06_PERMIT FILE - C1982056A (2)

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NMD and WMD (Panels 17 -Right through 24 -Right, 12 -Left through 20 -Left, and 14- and 15-Inby, PR 03- 06, PR06-07, PR09-08, TR07-63, TR08-64, TR09-68 and TR09-71) TC's continued expansion into these areas of the North and West Mining Districts, will not impact areas of unusually high value for fish and wildlife. There are no cliffs in the area that will be subsided, so there is no potential for subsidence impacts to raptors. The Fish Creek Valley will be subsided, as shown on Map 23, resulting in the potential for seasonal flooding of low-lying areas and an increase in groundwater levels, relative to the subsided surface along the margins of drainages channels. Both of these subsidence effects have the potential to result in beneficial increases in riparian vegetation and habitat along the margins of affected drainages. The flooded area will be dictated by surface flows in Fish Creek. During spring runoff, more of the valley will be flooded, with flows and water levels declining as the runoff abates. Rough approximations of flooded area acreages are presented in the AVF report prepared by SubTerra for these revisions. Wolf Creek Reserve (Panels WC-5RT through 9RT, PR14-10, PR15-11, TR13-83, MR16-296) The planned development and mining of the Wolf Creek Reserve will not impact areas of unusually high value for fish and wildlife. There are no cliffs in the area that will be subsided, so there is no potential for subsidence impacts to raptors. The Fish Creek valley will be subsided, as shown on Map 23, resulting in the potential for seasonal flooding of low-lying areas and an increase in groundwater levels, relative to the subsided surface along the margins of drainages channels. Both of these subsidence effects have the potential to result in beneficial increases in riparian vegetation and habitat along the margins of affected drainages. The flooded area will be dictated by surface flows in Fish Creek. During spring runoff, more of the valley will be flooded, with flows and water levels declining, as the runoff abates. Rough approximations of flooded area acreages are presented in the AVF report prepared by SubTerra for these revisions. In those areas where ancillary facility installations such as ventilation installations, utility boreholes, and dewatering facilities are necessary to support mining and related activities, plans for surface disturbance and ongoing activities will be reviewed with Colorado Parks and Wildlife (CPW) to identify any potential wildlife impacts and incorporate any appropriate specific mitigation measures. In general, TC will incorporate any appropriate specific CPW mitigation recommendations in the proposed development, mining, and reclamation plans. If there is uncertainty regarding potential wildlife impacts and specific mitigation measures are not identified, TC will cooperate with CPW to assess potential impacts during construction and operation, as appropriate, and may implement protection or mitigation measures based on either CPW recommendations or TC's extensive site experience. Dependent on the specific location and circumstances, wildlife protection/mitigation may involve relocation of proposed roads and surface installations, seasonal or daily timing restrictions, measures to control activities, light, and noise (ie: shielding, noise reduction measures, facility enclosures, limitations on site lighting or automatic sensors, etc.), fencing to preclude wildlife access, or other appropriate measures. Protection of the hydrologic balance. RN 17-07 2.05-127.1 02/15/18