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• Vegetation liners in drainage features (channels, spillways or other water courses); • Impoundment embanlartents (inslopes and outslopes); • Quickly established temporary vegetation cover during intermittent construction activities (dust and soil erosion control); • Organic mulches and cover crops; • Road cut and fill slopes steeper than 2h:ly; and • Vegetative filter strips for surface water runoff treatment. Critical Area Stabilization seed mixtures will include species best adapted to the site-specific planting requirements and goals, with the origin of plant materials being of lesser importance than the selected species' demonstrated success in stabilizing soil and establishing cover. Species that are aggressive and strongly rhizomatous will be favored for inclusion. Atypical Critical Area Stabilization seed mixture is provided in Table 3. With the concurrence of the BLM, species may be added or deleted from this seed mixture to fit site-specific needs and objectives. Species availability and economics will also influence the composition of the seed mixture. Therefore, native or introduced plant species may be used, selection being based on the ability to satisfy a particulaz application's vegetation requirements. Interim Revegetation seed mixtures will be used on disturbed areas that require plant cover for extended periods of time but will require redisturbance during subsequent mining operations or the fmal reclamation process. Interim vegetation can be particulazly important in: • Providing effective temporary or longer term erosion and sedimentation control; • Providing valuable wild&fe mitigation that minimizes or offsets habitat impacts associated with ongoing mining operation disturbance; • Providing cover and preventing erosion of stockpiled topsoil materials; and • Stabilizing water control and treatment structure embankments, road cuts and fills and other areas where surface stability and interim wildlife habitat capabilities are important factors where potential erosion hazazds aze moderate or low. An example of a typical Interim Revegetation seed mixture is provided in Table 6. While erosion and sedimentation control remain a primary goal for interim vegetation plantings, species selected for these mixtures will place increased emphasis on wildlife mitigation measures or other specialized goals identified on a site-by-site basis. With the concurrence of the BLM, species may be added or deleted from this mixture to fit site-specific stabilization and wildlife needs and objectives. Species availability and economics will influence seed mixture composition from yeaz to yeaz. Species seasonality may also be considered in seed mixture formulations for specific sites. Permanent vegetation establishment, plant community development and seral succession success depend upon the reconstruction of soil mediums that aze suitable for plant growth and American Soda, L.L.P. 5-5 Soil Conservation, Erosion and Sediroeot Control, reclamation aad Revegetation Plm October 28, 1998 Revised April 9, 1999