; or (C) to refinance long-term project obligations or Federal credit instruments, if the refinancing provides additional funding capacity for the completion, enhancement, or expansion of any project that— (i) is selected under section 999B; or (ii) otherwise meets the requirements of that section. (2) Limitation on refinancing of interim construction financing A loan under paragraph (1) shall not refinance interim construction financing under paragraph (1)(B) if the maturity of that interim construction financing is later than 1 year after the substantial completion of the project. (3) Risk assessment Before entering into an agreement under this subsection, the Secretary, in consultation with the Director of the Office of Management and Budget, shall determine an appropriate credit subsidy amount for each secured loan, taking into account all relevant factors, including the creditworthiness factors in section 999B(b)(2). (b) Terms and limitations (1) In general A secured loan under this section with respect to a project shall be on such terms and conditions and contain such covenants, representations, warranties, and requirements (including requirements for audits) as the Secretary determines to be appropriate. (2) Maximum amount The amount of a secured loan under this section shall not exceed an amount equal to 80 percent of the reasonably anticipated eligible project costs. (3) Payment A secured loan under this section shall— (A) be payable, in whole or in part, from— (i) user fees; (ii) payments owing to the obligor under a public-private partnership; or (iii) other dedicated revenue sources that also secure the senior project obligations