70 ILCS 1510/9
The financing of the acquisition, construction, reconstruction, improvement, betterment or extension of any project may be authorized to be issued under the Project Sections to provide funds for such purpose or purposes or for the refunding of bonds theretofore issued under the Project Sections, by ordinance of the commissioners which may be adopted at the same meeting at which it is introduced by a majority of all commissioners then in office and shall take effect immediately upon adoption. The bonds shall bear interest at such rate or rates without regard to any limitation in any other law, may be payable at such times, may be in one or more series, may bear such date or dates, may mature at such time or times not exceeding 40 years from their respective dates, may be payable in such medium of payment at such place or places, may carry such registration privileges, may be subject to such terms of redemption, may be executed in such manner, may contain such terms, covenants, and conditions, and may be in such form, either coupon or registered, as such ordinance or subsequent ordinances may provide. The bonds may be sold in such manner and upon such terms as may be deemed advisable by the commissioners. Pending the preparation of the definitive bonds, interim receipts or certificates in such form and with such provisions as the commissioners may determine may be issued to the purchaser or purchasers of bonds sold pursuant to the Project Sections. The bonds and interim receipts or certificates are fully negotiable within the meaning and for all purposes of the Uniform Commercial Code.
70 ILCS 1510/9