70 ILCS 1205/9.2-3
Bonds issued under Section 9.2-1 of this Article shall be payable solely from the revenue derived from the operation of the indoor or outdoor tennis courts, handball, racquetball, or squash courts, or zoo and facilities, and shall not in any event constitute an indebtedness of the park district within the meaning of any constitutional or statutory limitation. It shall plainly state on the face of each bond that the bond has been issued under Sections 9.2-1 through 9.2-6 of this Article, and that it does not constitute an indebtedness of the park district within any constitutional or statutory limitation.
The bonds shall be sold in such manner, to such persons and upon such terms as the board shall determine. If they are issued to bear interest at the rate of the maximum rate authorized by the Bond Authorization Act, as amended at the time of the making of the contract, they shall be sold for not less than par and accrued interest. If they are issued to bear interest at a rate of less than the maximum rate authorized by the Bond Authorization Act, as amended at the time of the making of the contract, the minimum price at which they may be sold shall be such that the interest cost to the park district of the proceeds of the bonds shall not exceed the maximum rate authorized by the Bond Authorization Act, as amended at the time of the making of the contract, computed to maturity, according to the standard table of bond values.
With respect to instruments for the payment of money issued under this Section either before, on, or after the effective date of this amendatory Act of 1989, it is and always has been the intention of the General Assembly (i) that the Omnibus Bond Acts are and always have been supplementary grants of power to issue instruments in accordance with the Omnibus Bond Acts, regardless of any provision of this Act that may appear to be or to have been more restrictive than those Acts, (ii) that the provisions of this Section are not a limitation on the supplementary authority granted by the Omnibus Bond Acts, and (iii) that instruments issued under this Section within the supplementary authority granted by the Omnibus Bond Acts are not invalid because of any provision of this Act that may appear to be or to have been more restrictive than those Acts.
70 ILCS 1205/9.2-3