(a) As appropriate, the Corps of Engineers and the non-Federal sponsor may prepare design documents to provide additional design information needed for projects. Such documents shall be approved in accordance with applicable policies of the Corps of Engineers and the non-Federal sponsor.

(b) The Corps of Engineers and the non-Federal sponsor shall prepare plans and specifications necessary for construction of projects. Such documents shall be approved in accordance with applicable policies of the Corps of Engineers and the non-Federal sponsor.

(c) The Corps of Engineers and the non-Federal sponsor may prepare other documents as appropriate during the real estate acquisition and construction phases for projects. Such documents shall be approved in accordance with applicable policies of the Corps of Engineers and the non-Federal sponsor.