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Section blo.112 (c) Continued. • In a study spanning almost 30 years in which some 127 species of grasses were planted, Gomm (1969) documents the livestock preferences for all of the introduced species proposed in the present rangeland mixture. He concluded his studies with the following statement: "Generally, the introduced species have been more palatable than the native in areas where range seeding is a common practice." The nutritional value of these introduced species is predictable and is largely independent of geochemical changes resulting from disruption of the topsoil and overburden. Cook and Harris (1950) state that: "environmental factors and soil moisture are more important in detemining the nutrient content of range forage plants under various site conditions than the chemical content of the soil .". Reclaimed vegetation quality, as reported by DePuit, et. al. (1976) Boas found to differ, but not significantly from that occurring on undisturbed sites. • (d) The species meet the requirements of applicable State and Federal seed or introduced species statutes and are not poisonous or noxious. Consultation with the Director of Extension Services in Routt County, Colorado, reveals that according to the present state and federal noxious plant lists, the proposed introduced species have clearance for seeding. None of the proposed species can be considered poisonous or noxious. All noxious weeds encountered on the reclaimed lands shall be controlled by techniques discussed in Section 816.97 (d)(7). Section 816.113 Revegetation: ._ming. Seeding and planting of distu_^bed areas shall be conducted during the first normal period for favorable planting conditions after final preparation. The normal period for favorable planting shall be that planting time generally accepted locally fer the tape of plant materials selected. Idhen necessary to effectively control erosion, any disturbed 816-147