Indiana Code Title 36. Local Government § 36-2-9-21

Sec. 21. (a) If a disposal fee is charged under IC 13-20-21-6(c), the county treasurer shall:

(b) Money in the fund established under subsection (a) may be used only to pay the costs of constructing, improving, or maintaining infrastructure that supports or is otherwise related to the landfill at which the disposal fees are charged.

(c) The county treasurer shall, in accordance with IC 5-13-9, invest any money accumulated in the fund established under subsection (a). Any interest received from investment of the money shall be paid into the fund.