PERMFILE64096 - Laserfiche WebLink

Home Browse Search

desirable (i.e., no noxious or strong increaser species) or high utility species. Realistic and consistent market availability was an additional selection criterion considered for all potential species and varieties. Included species which were not present in vegetation baseline studies were added to aid in achievement of the revegetation goals specified earlier. Finally, analysis of revegetation monitoring data collected et the Seneca 11 Mine since 1985 and review of pertinent revegetation literature was performed. The resulting information provided iris fights into seeded species performance, seeding rates, stand composition, planting rates, anticipated survival percentages, and the degree to which natural regeneration compliments the seed mixes. Seed Mix No. T (Table 13-1) has been designed for all reclaimed upland sites and ephemera! drainages on the mine area. The 24 species contained in the mix are adapted to a broad range of site conditions as noted following the mix. Site differences related to aspect, topography, moisture conditions, and topsoiling will compliment Seed Mix No. 1, allowing for variation in established species composition from site to site and increasing opportunities for diverse communities and habitat. Natural regeneration, variable in composition and degree, will also contribute to diverse reclaimed communities. Shrub planting areas, described in following sections, are included to further enhance the • diversity of the reclaimed upland areas and ephemeral drainages. Seed Nix No. 2 (Table 13-2) will be used in areas this t: are likely to have wet or potentially wet site conditions. Additional sites whe rtr this mix may be used include areas around permanent ponds. The species listed in the mix provide the basis for redevelopment of mesic site drier phase or riparian communities. Native species, which are not available as seed or seedlings, will reestablish in reasonable time frames because of the availability of native plant propogules in the proximity of the reclaimed areas. Observations of previously disturbed similar areas at the Seneca II Nine indicate Tv ha, Carex, and Juncus species have reestablished naturally. Selected shrub or tree plantings, as discussed later, will complete reclamation of these sites. Topsoil stockpiles, areas requiring temporary reclamation for approximately one year or longer, and roadside disturbances will be seeded with Seed Mix No. 3 (Table 13.3). Species selection was based on the need for rapid establishment; longevity; adaptability to a range of soil textures, aspects, and slopes; sod forming ability; presence of species that have deep root systems or a large and fibrous root mass; and a level of nitrogen maintenance in the soil or plant growth medium. An effort was made to balance the 13-14 Revised 01/15/93