The Building Authority shall keep account of the gross total income derived from each separate project or any combination thereof undertaken pursuant to this chapter. Disbursements from a given account in the public building fund shall be ordered by the authority only for the payment of: (1) The cost of maintenance and operation of the facility or facilities, unless otherwise provided for; (2) The principal of and interest on the bonds issued for each project, or combination thereof; and (3) Any other purposes set forth in the resolution authorizing the issuance of said bonds. Source: SL 1967, ch 276 , § 9.