; or reduce the risk of harm to occupants or property from natural hazards: Provided further, That projects funded with grants provided under this heading in this title must comply with the requirements of subchapter IV of chapter 31 of title 40, United States Code: Provided further, That such grants shall be provided through the policies, procedures, contracts, and transactional infrastructure of the authorized programs administered by the Department of Housing and Urban Development, on such terms and conditions as the Secretary of Housing and Urban Development deems appropriate to ensure the maintenance and preservation of the property, the continued operation and maintenance of energy efficiency technologies, and the timely expenditure of funds: Provided further, That the grants shall include a financial assessment and physical inspection of such property: Provided further, That eligible owners must have at least a satisfactory management review rating, be in substantial compliance with applicable performance standards and legal requirements, and commit to an additional period of affordability determined by the Secretary, but of not fewer than 15 years: Provided further, That in administering funds appropriated or otherwise made available under this heading in this title, the Secretary may waive or specify alternative requirements for any provision of any statute or regulation in connection with the obligation by the Secretary or the use of these funds (except for requirements related to fair housing, nondiscrimination, labor standards, and the environment), upon a finding that such a waiver is necessary to expedite or facilitate the use of such funds: Provided further, That of the amounts made available under this heading in this title, up to 0.5 percent may be transferred to Department of Housing and Urban Development, Program Offices—Office of Housing for necessary costs of administering and overseeing the obligation and expenditure of amounts under this heading in this title, to remain available until