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or duration of any possible adverse effect can be only speculative. There will be small losses of vegetation and corresponding displace- ment of disturbance of a minimal number of wildlife species. Some temporary and permanent scarring of the land will occur, although this alteration will be partially mitigated by dressing and revegeta- tion. Seasonal drawdowns will expose areas of lake bed, perhaps detracting from the aesthetic quality of the lake area. There will be an increase in water loss due to evaporation. Localized short- and long-term air, water, and noise pollution may occur to a minor extent. Any possible loss of historic values associated with the removal of the community of Sopris can be considered as an adverse impact. 4. ALTERNATIVES TO THE DEVELOPING PROJECT: Alternatives and purposes considered in developing the current course of action consisted of: upstream tributary reservoirs; flood plain evacuation; channel rectifica- tion, levees, and bank stabilization for flood control; water, power and municipal supply; Sopris Reservoir - Plans 1 and 2 - Flood control and irrigation; Sopris Reservoir - Flood control only; Sopris Reservoir - Combination reservoir and channel improvement; Floodway, and Piedmont Bridge Detention and Retention Reservoirs. Alternatives at this stage of project construction consist of: completion of the project on a smaller scale, elimination of the permanent pool, abandonment of the, project. and postponement. 5. CQolMENTS REOUESTED: Environmental Protection Agency Bureau of Sport Fisheries and Wildlife Bureau of Outdoor Recreation National Park Service Department of Agriculture, Soil Conservation Service Bureau of Reclamation Department of Commerce (Deputy Aast.Sec. for Environmental Department of the Interior (Office of Environmental Project Department of Transportation, Region 9 State Historical Society of Colorado Colorado Department of Health Colorado Division of Wildlife Bureau of Mines State Soil Conservation Board Colorado Water Conservation Board Colorado Department of Agriculture Colorado State Department of Highways Colorado Water Congress Rocky Mountain Center on the Environment Arkansas valley Audubon Society Colorado Wildlife Federation, Inc. Colorado Open Space Coordinating Council, Inc. Sierra Club Colorado Field Ornithologists Co10rsdo Department of Natural Resources Af fairs) Review) I,' .. '.'\' .