Indiana Code Title 5. State and Local Administration § 5-1.2-6-13

Sec. 13. (a) The natural resources commission may levy a surcharge not exceeding ten percent (10%), as established by the commission, on any of the following:

(b) The receipts from a surcharge shall be deposited in a special fund to be used only to pay rent to the authority and for maintenance of facilities covered by use agreements with the authority as provided in a use agreement entered into between the department of natural resources and the authority.  The special fund may be spent for that purpose without appropriation.

(c) During the life of a use agreement, a surcharge that has been imposed may not be rescinded or reduced so that the amount in the special fund and the receipts for one (1) year are less than one and two-tenths (1.2) times the anticipated rental payment and maintenance expense of facilities covered by a use agreement.

(d) The money in the special fund does not revert to the state general fund.