§ 3151.
(a)
In general
In the case of a grant to a recipient for a construction project under section 3141 or 3149 of this title, if the Secretary determines, before closeout of the project, that the cost of the project, based on the designs and specifications that were the basis of the grant, has decreased because of decreases in costs, the Secretary may approve, without further appropriation, the use of the excess funds (or a portion of the excess funds) by the recipient—
(1)
to increase the Federal share of the cost of a project under this title to the maximum percentage allowable under
section 3144 of this title; or
(2)
to improve the project.
([Pub. L. 89–136, title II, § 211], as added [Pub. L. 105–393, title I, § 102(a)], Nov. 13, 1998, [112 Stat. 3606]; amended [Pub. L. 108–373, title II, § 208], Oct. 27, 2004, [118 Stat. 1763]; [Pub. L. 111–8, div. G, title I, § 1301(b)], Mar. 11, 2009, [123 Stat. 829]; [Pub. L. 111–68, div. A, title I, § 1501(a)], Oct. 1, 2009, [123 Stat. 2041].)