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, $10,000,000, 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. Northeast corridor grants to the national railroad passenger corporation To enable the Secretary of Transportation to make grants to the National Railroad Passenger Corporation for activities associated with the Northeast Corridor as authorized by section 11101(a) of the Fixing America’s Surface Transportation Act (division A of Public Law 114–94 ), $650,000,000, to remain available until expended: Provided , That the Secretary may retain up to one-half of 1 percent of the funds provided under both this heading and the National Network Grants to the National Railroad Passenger Corporation heading to fund the costs of project management and oversight of activities authorized by section 11101(c) of division A of Public Law 114–94 : Provided