Authority: IC 14-34-2-1

Affected: IC 14-34

Sec. 147. (a) Any person who conducts in situ processing activities shall comply with sections 70 through 146 of this rule, this section, and section 148 of this rule.

(b) In situ processing activities shall be planned and conducted to minimize disturbance to the prevailing hydrologic balance by:

1. (1) avoiding discharge of fluids into holes or wells other than as approved by the director;
2. (2) injecting process recovery fluids only into geologic zones or intervals approved as production zones by the director;
3. (3) avoiding annular injection between the wall of the drill hole and the casing; and
4. (4) preventing discharge of process fluid into surface waters.

(c) Each person who conducts in situ processing activities shall submit for approval as part of the application for a permit under 312 IAC 25-4-105, and follow after approval, a plan that ensures that all acid-forming, toxic-forming, or radioactive gases, solids, or liquids constituting a fire, health, safety, or environmental hazard and caused by the mining and recovery process are promptly treated, confined, or disposed of, in a manner that prevents contamination of ground and surface waters, damage to fish, wildlife, and related environmental values, and threats to the public health and safety.

(d) Each person who conducts in situ processing activities shall prevent the flow of the process recovery fluid:

1. (1) horizontally beyond the affected area identified in the permit; and
2. (2) vertically into overlying and underlying aquifers.

(e) Each person who conducts in situ processing activities shall restore the quality of affected ground water in the permit and adjacent area, including ground water above and below the production zone, to the approximate premining levels, to ensure that the potential for use of the ground water is not diminished.

(Natural Resources Commission; 312 IAC 25-6-147; filed Jun 21, 2001, 2:53 p.m.: 24 IR 3589, 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)