(2) Grants made under this section may be used for
(A) the acquisition of fee simple and other interests in land;
(B) low-cost construction projects determined by the Secretary to be consistent with the purposes of this section, including but not limited to, paths, walkways, fences, parks, and the rehabilitation of historic buildings and structures; except that not more than 50 per centum of any grant made under this section may be used for such construction projects;
(C) in the case of grants made for objectives described in subsection (b)(2) of this section
(i) the rehabilitation or acquisition of piers to provide increased public use, including compatible commercial activity.
(ii) the establishment of shoreline stabilization measures including the installation or rehabilitation of bulkheads for the purpose of public safety or increasing public access and use, and
(iii) the removal or replacement of pilings where such action will provide increased recreational use of urban waterfront areas,
but activities provided for under this paragraph shall not be treated as construction projects subject to the limitations in paragraph (B);
(D) engineering designs, specifications, and other appropriate reports; and
(E) educational, interpretive, and management costs and such other related costs as the Secretary determines to be consistent with the purposes of this section.