Authority: IC 14-34-2-1

Affected: IC 14-34

Sec. 73. (a) Surface water information shall include the following:

1. (1) The name and location of the surface stream or tributary that will receive drainage from the permit area.
2. (2) The location of any discharge into a surface water body.
3. (3) The location and ownership of all streams, lakes, ponds, springs, and similar surface water bodies within the proposed permit and adjacent areas.

(b) Surface water information shall include a description of the seasonal variation in water quantity and quality of perennial streams in the permit and adjacent areas as well as those streams or other water bodies in the adjacent area which will receive drainage from the permit area in terms of the following:

1. (1) Baseline information on seasonal flow rates.

2. (2) The following water quality parameters:

   1. (A) Total dissolved solids in milligrams per liter or specific conductance corrected to twenty-five (25) degrees Celsius.
   2. (B) Total suspended solids in milligrams per liter.
   3. (C) The pH in standard units.
   4. (D) Total iron.
   5. (E) Total manganese.
   6. (F) Acidity and alkalinity.
   7. (G) Any additional baseline information required by the director if the other baseline information requirements of this subsection are insufficient to evaluate potential adverse surface water impacts.

(c) If a determination of the probable hydrologic consequences as required by section 85 of this rule indicates that adverse impacts on or off the proposed permit area may occur to the hydrologic balance, or that acid-forming or toxic-forming material is present that may result in the contamination of ground water or surface water supplies, the director shall require an applicant to provide information supplemental to that required under subsection (b) as necessary to evaluate the probable hydrologic consequences and to plan remedial and reclamation activities. The supplemental information may be based upon drilling, aquifer tests, hydrogeologic analysis of the water-bearing strata, flood flows, or analysis of other water quality or quantity characteristics.

(d) The application shall include a surface water monitoring plan based upon the probable hydrologic consequences determination required under section 85(c) of this rule and the analysis of all baseline hydrologic, geologic, and other information in the permit application. The plan shall provide for the monitoring of parameters that relate to the suitability of the surface water for current and approved postmined land uses and to the objective for protection of the hydrologic balance as set forth in section 85 of this rule as well as the effluent limitations found at 40 CFR 434.

(Natural Resources Commission; 312 IAC 25-4-73; filed Jun 21, 2001, 2:53 p.m.: 24 IR 3467, 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)