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Show be on unstable soil types and hence subject to severe and permanent construction scars. The steep slopes and thin soil mantle would make revegetation difficult. It was also pointed out that there would be a problem in disposing of significant volumes of spoil material derived from cuts and displacement by pipelines. Such disposal would alter the local scenery. Strawberry Aqueduct The evaluation of the environmental impacts on the landscape associated with the construction of the aqueduct system has not yet been completely carried out. The Bureau of Reclamation recognizes that additional information is needed and acknowledges and accepts the concept put forth by the Forest Service in its comments on the Draft Environmental Statement that the proposed design and location of each feature should be re- examined with the view of making feasible changes that would avoid or lessen adverse environmental impacts. It is intended that each uncompleted feature of the aqueduct system would be reassessed considering Forest Service recommendations. A further discussion of alternative designs and locations of features appears in Section H. The Forest Service environmental impact evaluation team from the Ashley Forest has studied the proposed sites for the Upper Stillwater Tunnel, North Fork Siphon and inlet portal to Hades Tunnel and published its findings in an attachment to the Forest Services' comments on the draft statement. The Forest Service has also examined the proposals for Hades Tunnel, Wolf Creek Pipeline, and Rhodes Tunnel and made recommendations for some changes that are presently being considered by the Bureau of Reclamation. West Fork Pipeline, Vat Tunnel and Currant Creek Pipeline will be studied cooperatively by both agencies at an early future date. ' Most of the discussion of impacts presented below was 79 109 19ft obtained from Forest Service sources. » » Adverse impacts for Upper Stillwater Tunnel include the disposal of a large volume of waste material from approximately _ 8 miles of 10- foot- diameter tunnel and permanent scars associated with access road and powerline construction. Present plans call for construction of the tunnel from both ends. This means that there would be about 62,000 cubic yards of material to be disposed of at each portal. 234 |
