30 CFR 779.21 - What information on soils must I include in my permit application?
(2) The applicable soil survey information that the Natural Resources Conservation Service maintains for the soil mapping units identified in paragraph (b)(1) of this section. You may provide this information either in paper form or via a link to the appropriate element of the Natural Resources Conservation Service's soil survey Web site.
(c) A description of soil depths within the proposed permit area.
(d) Detailed information on soil quality, if you seek approval for the use of soil substitutes or supplements under § 780.12(e) of this chapter.
(e) The soil survey information required by § 785.17(b)(3) of this chapter if the reconnaissance inspection conducted under paragraph (a) of this section indicates that prime farmland historically used for cropland may be present.