Secretary, after selection, to the appropriate agencies to be administered in accordance with chapter 53 of title 49, United States Code: Provided further , That the Secretary shall not limit eligible projects from consideration for funding for planning, engineering, environmental, construction, and design elements of the same project in the same application: Provided further , That unobligated balances remaining after 4 years from the date of enactment may be used for any eligible project under section 24407(c) of title 49, United States Code: Provided further , That the Secretary may withhold up to one percent of the amount provided under this heading for the costs of award and project management oversight of grants carried out under section 24407 of title 49, United States Code: Provided further , That the Secretary shall issue the Notice of Funding Opportunity that encompasses previously unawarded funds provided under this heading in fiscal year 2018 by Public Law 115–141 and funds provided under this heading in this Act no later than 30 days after enactment of this Act: Provided further , That the Secretary shall announce the selection of projects to receive awards for the funds in the previous proviso no later than 120 days after enactment of this Act. Restoration and enhancement For necessary expenses related to Restoration and Enhancement Grants, as authorized by section 24408 of title 49, United States Code, $5,000,000, to remain available until expended: Provided , That the Secretary may withhold up to one percent of the funds provided under this heading to fund the costs of award and project management and oversight: Provided further , That the Secretary shall issue the Notice of Funding Opportunity for funds provided under this heading no later than 30 days after enactment of this Act: Provided further , That the Secretary shall announce the selection of projects to receive awards for the funds in the previous proviso no later than 120 days after enactment of this Act. Magnetic levitation technology