Indiana Code Title 13. Environment § 13-17-11-2

Sec. 2. The department may not issue a permit for the construction or the operation of a thermal oxidation unit that would be used only to remediate soil contaminated by petroleum or a petroleum byproduct if the thermal oxidation unit would be constructed or operated in a county that:

unless it can be demonstrated that the thermal oxidation unit is in compliance with a state implementation plan submitted under Section 182 of the federal Clean Air Act (42 U.S.C. 7511a).