104 STAT. 2934 PUBLIC LAW 101-591—NOV. 16, 1990 (3) REVISION OF MAPS. — As soon as practicable after the date on which a unit is added to the System under subsection (d)(2), the Secretary shall revise the maps referred to in section 4(a) of the Act (as amended by section 3 of this Act) to reflect each such addition. (e) MODIFICATION OF BOUNDARIES, REVISION OF MAPS, AND PUBLICATION OF NOTICE.— (1) IN GENERAL.— Not later than 2 years after the date of the enactment of this Act, the Secretary— (A) based on recommendations submitted by local governments and State coastal zone management agencies under subsection (b), may make such minor and technical modifications to the boundaries of existing units of the System as are consistent with the purposes of the Coastal Barrier Resources Act (16 U.S.C. 3501 et seq.) and are necessary to clarify the boundaries of those units; (B) shall revise the maps referred to in section 4(a) of the Act (as amended by section 3 of this Act)— (i) to reflect those modifications; and (ii) to reflect each election of a local government, Governor of a State, or qualified organization to add an area to the System pursuant to subsection (c); and Federal (C) shall publish in the Federal Register notice of each R^ter, such modification or election. publication. ^2) EFFECTIVE DATE OF MODIFICATIONS.— A modification of the boundaries of a unit of the System under paragraph (I)(A) shall take effect on the date on which the Secretary published notice in the Federal Register under paragraph (I)(C) with respect to that modification. (f) NOTIFICATION REGARDING MODIFICATIONS AND ELECTIONS. —Not less than 30 days before the effective date of any modification of the boundaries of a unit of the System under subsection (d)(l)(A), or of an election of a local government. Governor of a State, or qualified organization to add an area of qualified coastal barrier to the System pursuant to subsection (c) or of an addition to the System pursuant to subsection (d), the Secretary shall submit written notice of such modification or election to— (1) the Committee on Merchant Marine and Fisheries of the House of Representatives and the Committee on Environment and Public Works of the Senate; and (2) appropriate State and Federal officials. SEC. 5. EXCEPTIONS TO LIMITATIONS ON FEDERAL EXPENDITURES. (a) EXCEPTIONS, GENERALLY.—Section 6 of the Coastal Barrier Resources Act (16 U.S.C. 3505) is amended to read as follows: "SEC. 6. EXCEPTIONS TO LIMITATIONS ON EXPENDITURES. "(a) IN GENERAL.— Notwithstanding section 5, the appropriate Federal officer, after consultation with the Secretary, may make Federal expenditures and may make financial assistance available within the System for the following: "(1) Any use or facility necessary for the exploration, extraction, or transportation of energy resources which can be carried out only on, in, or adjacent to a coastal water area because the use or facility requires access to the coastal water body. "(2) The maintenance or construction of improvements of existing Federal navigation channels (including the Intracoastal
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