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G~ 5"'~ identified in the field and tillage will be conducted a sufficient number of times during [he growing season [o control vegetation, Controlling weeds or other competing vegetation in seeding or shrub planting areas may also be carried out through the use of chemical herbicides. Large scale use of herbicides is not being promoted; however, they have a high level of utility when controlling problem perennial weeds in permanent revegetation areas requiring reseeding, or where surface s [ability in a shrub establishment area is critical. Any herbicides used will be based on recommendations in the mosC current Colorado Yeed Control Guide issued by the Colorado State University Cooperative Extension Service. Prior to the application of any herbicide, approval of their use will be requested from CMLRD. The herbicides wilt be registered for the use intended and will be applied by certified applicators with strict adherence to the label. A herbicide application program has been in-place at Peabody~s Seneca II Mine. Seed Mixes and Planting Lists. Two seed mixes have been developed for permanent revegetation. Complimenting the seed mixes used in permanent revegetation ere lists of tree and shrub seedlings to be used in concentrated planting areas on the mine permit area. A shrub seeding list, temporary stabilization mix, and a list of annual grains to be used for cover cropping complete the lists of plant materials to be used in the various revegetation activities. Initial considerations in the development of the permanent mixes and seedling lists included the anticipated reclaimed area site conditions and the desired revegetation communities. Specific goals used to develop [he permanent seed mixes and seedling lists included rapid end long-term surface stabilization, ease of establishment, maximum use of native species, adequate species diversity, high levels of utility for livestock antl wildlife, good forage production potential, compatibility with naturally rag eneratin9 native species present in replacetl topsoi L, and the ability to be self-sustaining or Compliment successional processes in [he recl of mad plant communities. Attainment of these goals, in turn, facfLitates achievement of the postmi ning land uses. To finalize the plant materials lists, dominant or commonly occurring species identifietl in the regional vegetation basel ine studies were evaluated for inclusion in the seed mixes or planting lists. The list of these species was further refined to include the more 13-73 Revised 01/15/93