; and (B) to conclude, with full repayment of principal and interest, by the date that is 25 years after the end of the period of availability specified in subsection (b)(6). 6. Alternative prudential lending standards for small projects Not later than 180 days after the date of the enactment of this Act, the Assistant Secretary shall establish alternative, streamlined prudential lending standards for small projects receiving credit assistance under the BIFIA program to ensure that such projects pose no additional risk to the Federal Government, as compared with projects that are not small projects. 7. Program administration (a) Requirement The Assistant Secretary shall establish a uniform system to service the Federal credit instruments made available under the BIFIA program. (b) Fees The Assistant Secretary may collect and spend fees, contingent on authority being provided in appropriations Acts, at a level that is sufficient to cover— (1) the costs of services of expert firms retained pursuant to subsection (d)