Ind. Code § 13-30-3-8
(a) A person who has filed a complaint under IC 13-30-1 may proceed against the alleged violator if the department does not:
(1) commence:
(B) a civil action;
on the alleged pollution, impairment, or destruction not later than ninety (90) days after receiving notice under IC 13-30-1-2 ;
(3) diligently pursue:
(B) a civil action;
concerning the alleged pollution, impairment, or destruction after the administrative proceeding or civil action is commenced.
(b) The department does not have to be joined as a party in an action under this section.
[Pre-1996 Recodification Citation: 13-7-11-2(g).]
As added by P.L.1-1996, SEC.20.