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<br />Aspen Highlands Ski Area <br /> <br />Impact Mitigated Required r\'litigation Effective- Responsible <br /> nessl Party <br />Clearing vegetation/soil 4. Locate any utility corridors in previously disturbed (lreeless) I FS/ ASC <br />disturbance on catwalks. or abandoned areas. where practicable. <br />utility corridors, lift 5. Physically identify conslruction limits on the ground prior to I FS/ ASC <br />terminals, and lift lines. construction. <br />( continued) <br />Impacts to sensitive alpine I. Minimize surface disturbance in alpine areas through close I FS/ASC <br />vegetation. coordination with the summer operating plan. <br /> 2. Close alpine areas to skiing and snow grooming during 1 FS/ASC <br /> limited (<8 inches or as determine during monitoring) or no <br /> snow conditions. <br /> J. Clearly mark eslablished trails and provide interpretive signs 2 FS/ ASC <br /> and pamphlets encouraging hikers to stay on trails by <br /> describing the sensitive nature of alpine tundra communities, <br /> and the potential results of trampling undisturbed vegetation. <br />Disturbance to the surface I. Helicopter out timber from inaccessible areas. I FS/ ASC <br />in lift corridors. 2. Air-lift tower tlnd terminal construction materials to 1 FS/ ASC <br /> construcllon sites. <br />Loss of old-growth and I. Limit glading activities in tlreas mapped as potentitll or J FS/ASC <br />associated shade-tolerant recruitment 0Id-gro\l..1h. Do not reduce residual forest canopy <br />plants from glading in closure below 60%. Remove trees for skiing on an .'as <br />dense forested stands. needed" basis, Followed by monitoring for adequate skier <br /> safet)'. <br />Introduction of non-native I. Utilize certified weed-free seed of species native to the area 2 FS/ ASC <br />species. for revegetation of disturbed areas. especially in cleared <br /> areas. <br /> 2. Aggressively target any existing or ne\.... populations of 2 FS/ ASCS/ <br /> noxiolls or invasl\:e species that appear in disturbed 3reas or PITCO <br /> as a result of expansion activities. <br /> J. Clean all construction equipment of e;\.cess mud pnor to 2 FS/ASC <br /> entering NFSL. <br />Potential impacts to I. Survey ne\\' alignments 3nd facility footprints occurring in 2 FS/ ASC <br />Cypripedium jasciculatum areas mapped as suitable habitat (spruce/fir/lodgepole) prior <br />during constructIOn. to construction during the mid-May to mid-June flowering <br /> period for the occurrence of brownie lady slipper. If found. <br /> coordinate appropri3te 3ction with the Forest Service <br /> representative. <br />Wetland Resources <br />Dredge/fill at road I. Avoid impacts to wetlands when possible. 1 ACOE/FS/ <br />crossings 2. Minimize the extent of impact by reducing the size of the 1 ASC <br /> impact. ACOE/FS/ <br /> J. Design 3nd size culverts and other instream features for I ASC <br /> normal and expected flood flows. pass debris. and allow ACOE/FS/ <br /> free movement of resident aquatic life. Install trash rack.s ASC <br /> upstream if needed. Coordinate design with hydrologists <br /> 4. Where appropnate. utilize bridges to cross linear wetland 1 ACOE/FS/ <br /> features. ASC <br /> 5. Mitigate for wetland losses if required by the ACOE at the 1 ACOE/FS/ <br /> time of Section 404 permitting.. ASC <br />Glading in riparian zones I. Fell trees away from riparian areas. 2 FS/ ASC <br /> <br />18 <br /> <br />Associoled AClions and Requlremenls <br />Required A-flllgalion and Monitoring <br />