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<br />O~2128 <br /> <br />Record 0/ Decision <br /> <br />Impact Mitigated Required Miligation Effective- Responsible <br /> nessl Party <br />Biodiversity <br />Impacts to biodiversity could be reduced through implementation of v.'ildlife mitigation measures WLI, WL2, and WL4. <br />Aquatic Resources <br />Changes to perennial L Within one (1) year of approval of development activities I FSI ASC <br />stream courses due to and prior to any construction, a Drainage Management Plan <br />increased runoff volumes will be developed. submitted for review, and approved by <br />and associated erosion. [he Forest Service. <br />Impacts 10 water qualil) L Temporary physical sediment control is required I FSI ASC <br />and associated concurrently for all construction disturbances and will be <br />sedimentation of aquatic addressed project specific in the Construction/Operating <br />habitats. Plan This plan will provide methods to: (1) trap sediment <br /> on-site to the fullest extent possible using straw bales, filter <br /> fence, and/or sand bags (2) eliminate connected disturbances <br /> to nearby drainages (3) disperse runoff onto tilter strips. <br /> 2. Monitoring of ground cover, channel stability and I FSI ASC <br /> implementation of BMPs will occur in tandem with any <br /> project development activity and its mitigation. <br /> 3. Obliterate, seed, fertilize and mulch the Red Onion 2 FS/ASC <br /> maintenance road in conjunction with Drainage Plan <br /> implementation. Provide natural drainage that disperses <br /> runoff into filter strips. <br /> 4. Seed. fenilize and mulch over disturbed areas within five (5) I FSI ASC <br /> days of disturbance depending on .season, In folio" ing years. <br /> seed areas \\.'here revegetation efforts have not attained <br /> coverage comparable to the adjacent. undisturbed areas. <br /> 5. Armor cross drain inlets, outlets, and/or ditches as needed. I FSI ASC <br />Degradation of water I. AVOid excessive water qU<lJity changes by schedulmg I FS/ASC <br />quality and aquatic construction during low 00\\ or dry periods. and/or by <br />syslems Installing a bypass channel or a berm in portions of the <br /> affected channel <br /> 2. Design and size culverts nnd other instream features for I FSI ASC <br /> normal and expected Oood flows. pass debris. and allow <br /> free movement of resident aquatic life. Install trash racks <br /> upstream if needed. <br />Glading in riparian zones I. Fell trees away from riparian areas, 2 FSI ASC <br />Recreation <br />Exceedance of the initial I. When the number of skiers exceeds 3,480 SAOT on 10 or I FSI ASCI <br />access capacity of 3.480 more days of the ski season, the Forest Service. Pitkin City of <br />SAOr. County, City of Aspen. and ASC should jointly devise and Aspen/ <br /> implement a mutually acceptable strategy for limiting the Pitkin <br /> number of skiers using the Aspen Highlands Ski Area, County <br /> 2. Continue to use a radio station to inform arriving skiers that 2 ASC <br /> lhe number of skiers on Aspen Highlands and parking at <br /> Aspen Highlands is near or at capacity and to encourage <br /> skiers to use one of the other three ski areas. <br /> 3. Reduce the delivery capacity of the high-speed lifts I ASC <br /> (Thunderbowl. E,xhibition I). <br />Inadequate parking at I. Install an elecLronic sign board on the highway to inform 2 ASC <br />Aspen Highlands. arriving visitors of the status of the Aspen Highlands parking <br /> lot to encourage visitors to use other parking areas when lot <br /> is full. <br /> <br />ASSOCiated Actions and Requirements <br />ReqUIred Alitigalion and Momtoring <br /> <br />21 <br />