Ala. Code § 2-3A-9

All moneys derived from the sale of any bonds issued by the authority shall be used solely for the purpose or purposes for which the same are authorized, including, but without limitation to, the establishment of reserve funds as security for the payment of the principal of (and premium, if any) and interest on the bonds, and any costs and expenses incidental thereto. Such costs and expenses may include but shall not be limited to (i) the fiscal, consulting, legal and other expenses incurred in connection with the issuance of the bonds, and (ii) except in the case of refunding bonds, interest to accrue on such bonds for a period ending not later than two years from their date.