(a) While bonds are outstanding, the governing body may adopt and collect fees for services furnished or made available by the solid waste management system, including a resource recovery system.
(b) The fees must be adequate to provide and maintain the funds created by the resolution authorizing the bonds and to pay:
(1) operational costs or expenses allocable to the solid waste management system, including a resource recovery system; and
(2) the principal of and interest on the bonds.