Ind. Code § 13-15-6-5
(b) Notwithstanding IC 4-21.5-5-5 , a person may file a petition for judicial review of final agency action on an application for a permit, a permit renewal, or a permit revision more than thirty (30) days after the person is served notice of the final agency action if the following conditions exist:
(3) The new grounds:
(B) could not by due diligence have been discovered and produced within the time required for the proceedings under this section.
[Pre-1996 Recodification Citation: 13-7-10-2.5(h).]
As added by P.L.1-1996, SEC.5. Amended by P.L.90-1998, SEC.15.