Ind. Code § 8-10-4-3

Sec. 3. Any lease of a project may provide that the lessee, as its reasonable portion of the ports of Indiana's administrative expense incurred by the ports of Indiana during the term of the lease which the lessee is required to pay by IC 8-10-1-10, shall pay to the ports of Indiana for the use of the harbor, the public docking facilities and public wharves and piers, all harbor, dockage, and wharfage charges established by the ports of Indiana.