Roadless area characteristics include the following: Soil, water, and air, Sources of public drinking water, Diversity of plant and animal communities Habitat for threatened, endangered, proposed, candidate, and sensitive species, and for those species dependent on large, undisturbed areas of land Primitive, Semi-Primitive Non-Motorized, and Semi-Primitive Motorized classes of recreation opportunities, Reference landscapes, Landscape character and scenic integrity, Traditional cultural properties and sacred sites, and Other locally identified unique characteristics