; (C) not later than 1 year after the date specified in section 14(i), provide an update to the Board and the Administrator on the plan developed under subparagraph (B); and (D) not later than the end of the 3-year period beginning on the date on which the President submits the recommendations of the Board to Congress, complete implementation of all recommended actions. (2) Actions Each recommended action taken by a Federal agency shall be economically beneficial and cost-neutral or otherwise result in savings to the Federal Government. (3) Failure to implement recommendations If a Federal agency fails to carry out the plan described in paragraph (1)(B) and implement the recommendations of the Board within the period described in paragraph (1)(D), the Administrator shall— (A) assume the authority of that Federal agency for the purpose of carrying out the plan and implementing the recommendations; and (B) implement the recommendations of the Board for that Federal agency. (b) Actions of Federal agencies In implementing any recommended action relating to any Federal civilian real property under this Act, a Federal agency may, in consultation with the Administrator, pursuant to subsection (c), take all such necessary and proper actions, including— (1) constructing replacement facilities, performing such other activities, and conducting such advance planning and design as is required to transfer functions from a Federal civilian real property to another Federal civilian real property; (2) providing outplacement assistance to civilian employees employed by any Federal agency at a Federal civilian real property impacted by the recommended action; and (3) reimbursing other Federal agencies for actions performed at the request of the Board. (c) Necessary and proper actions (1) In general In acting on a recommendation of the Board, a Federal agency shall— (A) act within any authority delegated to the Federal agency