Indiana Code Title 13. Environment § 13-18-5-1

(1) The construction or installation of secondary containment structures at facilities in which hazardous materials are stored or transferred for the purpose of preventing released hazardous materials from entering surface water or groundwater.

(2) The development by the owner or operator of each facility at which hazardous materials are stored or handled of a plan for responding to the release of a hazardous material at that facility.

(3) The rules must be consistent with applicable safety and fire code laws.