Authority: IC 14-34-2-1

Affected: IC 14-34

Sec. 72. Each drilled hole, shaft, well, or other exposed underground opening shall be cased, sealed, or managed to:

1. (1) prevent acid or toxic water drainage from entering ground or surface waters; and
2. (2) minimize disturbance to the prevailing hydrologic balance.

Each drill hole or well that is uncovered or exposed by mining activities within the permit area shall be sealed in a manner to prevent exposure by any mining activity. Use of a drilled hole, shaft, or monitoring well as a water well must meet section 87 of this rule. This section does not apply to holes drilled and used for blasting in the area affected by surface operations.

(Natural Resources Commission; 312 IAC 25-6-72; filed Jun 21, 2001, 2:53 p.m.: 24 IR 3546, 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)