B. The district may enter into a lease or lease-purchase contract with any state, parish or local agency or person, firm, or corporation, public or private, for the acquisition of a facility with a term not to exceed thirty years upon such terms and conditions as the board shall deem proper. Any such lease or lease-purchase contract need not be advertised and bid, and to that extent the district shall be exempt from the provisions of Chapter 10 of Title 41 of the Louisiana Revised Statutes of 1950. The obligation to make payments under a lease or lease-purchase contract shall not constitute, give rise to, or be construed as an indebtedness within the meaning of any constitutional, statutory, or home rule charter debt limitation. However, any such contract shall contain the following annual appropriation dependency clause: "The continuation of this contract is contingent upon the continued appropriation of funds by the board to fulfill the requirements of the contract. If the board fails to appropriate sufficient monies, to provide for the continuation of the contract, or if such appropriation is reduced by any means provided in the appropriation resolution to prevent the total appropriations for the year from exceeding revenues for that year or for any other lawful purpose and the effect of such reduction is to provide insufficient funds for the continuation of the contract, the contract shall terminate on the date of the beginning of the first fiscal year for which funds are not appropriated."