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",--" -- tr ~. ~j';;';0 . CHAPTER V MITIGATING MEASURES AND AIR AND WATER QUALITY ASPECTS A. General Mitigation Measures 1. Cultural Resources No mitigation measures will be necessary as no known significant cultural resource sites will be disturbed. If such resources are encountered during construction, work will be halted until the Lower Missouri Region Archeologist can have the situation assessed. 2. Revegetation of Disturbed Areas . Designated areas not occupied by structures which have heen scarred, cleared or stripped of vegetation will be revegetated. These ~reas include, but are not limited to, cut and fill slopes of highways and roads; areas used for construction camps; surface area nf huried conduits, and obliterated construction roads. Generally, topsoil that has been stripped and stockpiled during excavation for construction is spread evenly over the areas to be revegetated. The areas are fertilized and planted with native and/or adapted grasses and shrubs. Irrigation may be needed for a one- or two- year period to assure successful revegetation. Various ~ethods of seeding are utilized depending on the characteristics of the area to be revegetated. Hydroseeding with a hydromulch containing seed, fertilizer, water, and wood fiber is often used to plant cut nr fill slopes. Hand seeding and drilling are other Methods "sed for seeding disturbed areas. Aspen mats, straw and wood fiber have heen-use~~prevent-wind-and-wafer erosion and retain Moisture while vegetation is being established. 3. Public Safety The safety of the public will be considered in the design and construction of the Fountain Valley Conduit. The conduit will be buried. The pumping plants will be enclosed and switchyards will be fenced. The tops of the surge, regulating, and storage tanks will be enclosed and accessible only to project personnel. . V-I