Sec. 285.029.  CHANGE FOR DISTRICT SERVICES.  The hospital district shall charge sufficient rentals or rates for services rendered by the parking station to produce revenues sufficient to:
(1)  pay all expenses of owning, operating, and maintaining the parking station; 
(2)  pay the principal of and interest on the bonds when due;  and
(3)  create and maintain a bond reserve fund and other funds as provided by the bond order or trust indenture.
Acts 1989, 71st Leg., ch. 678, Sec. 1, eff. Sept. 1, 1989.