40 C.F.R. § 35.3530
(b) Program administration. A State may not use monies deposited into the Fund to cover its program administration costs. In addition to using the funds available from the administration and technical assistance set-aside under § 35.3535(b), a State may use the following methods to cover its program administration and other program costs.
(3) A State may assess fees on an assistance recipient which are included as principal in a loan. These fees, which include interest earned on fees, must be deposited into the Fund or into an account outside of the Fund. If the fees are deposited into the Fund, they are subject to the authorized uses of the Fund. If the fees are deposited into an account outside of the Fund, they must be used for program administration or other purposes for which capitalization grants can be awarded under section 1452. Fees included as principal in a loan cannot be used for State match under sections 1452(e) and (g)(2) of the Act or combined financial administration of the DWSRF program and CWSRF program Funds. Additionally, fees included as principal in a loan:
(c) Transfers. The Governor of a State, or a State official acting pursuant to authorization from the Governor, may transfer an amount equal to 33 percent of a fiscal year's DWSRF program capitalization grant to the CWSRF program or an equivalent amount from the CWSRF program to the DWSRF program. The following conditions apply:
(1) When a State initially decides to transfer funds:
(d) Cross-collateralization. A State may combine the Fund assets of the DWSRF program and CWSRF program as security for bond issues to enhance the lending capacity of one or both of the programs. The following conditions apply:
(1) When a State initially decides to cross-collateralize: