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Grasses: (Continued) Lbs/Acre A. trachycaulum - primar (slender wheatgrass) 3 A. spicatum Blue Bunch wheatgrass) 1 Oryzopsis hymenodes (Indian ricegrass) 2 Stipa tomato needle-and-thread-grass) 1 AA. trichophorum (pubescent wheatgrass) 2 Bromus inermis (smooth brome) 1 E ymu~s junceus (Russian wildrye) 2 Shrubs: Atri lex canescens (Four-wing saltbush) 2 Ephedra viridus Mormon tea) I Ceratoides Janata (winterfat) 1 TOTAL 27 The grass and forb seeds will be applied by hydraulic planting methods after hand transplanting the shrubs. Normally, hydraulic seeding and mulching is accomplished by a one-step method; however, a two-step method will be used on these steep slopes. First, water, fertilizer, and seed will be mixed in a tanker and sprayed on the slopes. Secondly, Weyerhausser Silva-Fiber or equivalent mulch will be hydraulically applied at the rate to 2,000 lbs per acre. These wood cellulose fibers protect the seed and help maintain soil stabilization while germination and seedling growth take place. This protective mulch holds the seeds on the soil, while insulating against temperature extremes. Since there is little if any topsoil in the canyon where this dump is located no stripping and stockpiling will take place. In order to reduce the hazard of downstream siltation due to normal precipitation hazards, the native rocks and talus will be used to create one or more small impoundment structures at the toe of the dump designed to trap surface flows equal to a 10-year flood or such greater flows as required to comply with the terms of a NPDES permit and allow these waters to infiltrate into the alluvium in the bottom of this canyon. These structures will eventually be covered by the dump or after final abandonment, will be removed and graded to the topography of the surround area. See map, Exhibit F, for original contours.