Indiana Administrative Code
Title 312 - NATURAL RESOURCES COMMISSION
Article 3 - ADJUDICATORY PROCEEDINGS
Rule 1 - Procedural Rules
Section 1-6 - Amendment of pleadings

(a) A pleading described in section 3(a) of this rule may be amended once as a matter of course before a response is filed, but not later than the initial prehearing conference or fifteen (15) days before a hearing (whichever occurs first), except by leave of the administrative law judge. Leave shall be granted where justice requires.

(b) If the claim or defense asserted in the amended pleading arose out of the conduct, transaction, or occurrence set forth or attempted to be set forth in the original pleading, the amendment relates back to the date of the original pleading.