(a) A taxing authority in Anderson or Cherokee County may by contract grant to the authority:
(1) sales tax revenue received from a sale made on property owned, controlled, or leased by the authority or by a person with whom the authority contracts under Section 4501.102; or
(2) local hotel occupancy tax revenue received from a hotel located within one mile of a place where the Texas State Railroad loads or unloads passengers.
(b) The grant must serve a public purpose of the taxing authority making the grant.