Indiana Code Title 13. Environment § 13-15-4-6

Sec. 6. (a) Notwithstanding the periods specified in sections 1 through 4 of this chapter and this section, a person proposing to construct, modify, or operate any equipment, facility, or pollution control device that is demonstrated to achieve pollution control or pollution prevention in excess of applicable federal, state, or local requirements may apply to the commissioner for an interim permit to construct, modify, or operate the equipment, facility, or pollution control device.

(b) The commissioner shall approve or deny the interim permit not later than sixty (60) days after receipt of the application for an interim permit, unless the applicant and the commissioner agree that a longer review period is necessary.

(c) This section does not relieve a person from complying with:

to the extent that this title and the rules are not inconsistent with this section.