Authority: IC 14-34-2-1

Affected: IC 14-34

Sec. 21. (a) Backfilled materials shall be placed so as to do the following:

1. (1) To minimize contamination of ground water systems with acid, toxic, or otherwise harmful mine drainage.
2. (2) To minimize adverse effects of mining on ground water systems outside the permit area.
3. (3) To support approved postmining land uses.

(b) To control the effects of mine drainage, pits, cuts, and other mine excavation or disturbances shall be located, designed, constructed, and utilized in such manner as to prevent or control discharge of acid, toxic, or otherwise harmful mine drainage waters into ground water systems and to prevent adverse impacts on such ground water systems or on approved postmining land uses.

(Natural Resources Commission; 312 IAC 25-6-21; filed Jun 21, 2001, 2:53 p.m.: 24 IR 3520, eff Dec 1, 2001; readopted filed May 29, 2007, 9:51 a.m.: 20070613-IR-312070146RFA; readopted filed Sep 19, 2013, 10:12 a.m.: 20131016-IR-312130125RFA; readopted filed Mar 26, 2019, 3:40 p.m.: 20190424-IR-312190011RFA; readopted filed Mar 25, 2025, 9:50 a.m.: 20250423-IR-312240574RFA)