Indiana Code Title 13. Environment § 13-14-11-1

Sec. 1. (a) The commissioner shall maintain a record of the actions taken under this title.  Subject to subsection (b), these:

shall be made available for public inspection and copying in the department offices during regular business hours under IC 5-14-3.

(b) Upon showing satisfactory to the commissioner by any person that all or any part of the records, reports, permits, permit applications, documentation, or information other than effluent or emission data, would, if made public, divulge methods or processes entitled to protection as trade secrets of the person, the commissioner shall consider, treat, and protect all or part of the trade secret records, reports, or information as confidential.