Sec. 283.103.  TOLLS REQUIRED.  The county shall impose tolls and other charges for use of the project in amounts that are sufficient to:
(1)  pay operation and maintenance costs of the project;
(2)  pay principal and interest when due on the bonds;
(3)  establish a reserve fund if required;  and
(4)  establish an adequate depreciation and replacement fund.
Acts 1995, 74th Leg., ch. 165, Sec. 1, eff. Sept. 1, 1995.