Ind. Code § 13-14-9-7

Sec. 7. (a) Unless a board determines under section 5(c)(2) of this chapter that a proposed rule should be subject to additional comments, section 3 of this chapter does not apply to a rulemaking action if the commissioner determines that the rulemaking policy alternatives available to the department are so limited that the public notice and comment period under section 3 of this chapter would provide no substantial benefit to:

(1) the environment; or

(2) persons to be regulated or otherwise affected by the proposed rule.

(b) If the commissioner makes a determination under subsection (a), the commissioner shall prepare written findings under this section. The full text of the commissioner's written findings shall be included in the public notice provided under section 4 of this chapter.