Authority: IC 13-14-8-7; IC 13-15-1-2; IC 13-15-2-1; IC 13-18-3-1; IC 13-18-12- 4

Affected: IC 13-11-2-77; IC 13-30-2-1

Sec. 4. (a) Industrial process wastewater and industrial storm water to be applied to land with a low potential for public exposure must have a pH between 6 and 9 standard units.

(b) Monitoring for industrial process wastewater and industrial storm water to be applied to land with a low potential for public exposure must be completed no less frequently than the following:

1. (1) pH must be monitored at least weekly.
2. (2) BOD must be monitored at least weekly.
3. (3) Volatile solids must be monitored at least weekly using Part 2540 G*.
4. (4) Pollutants listed in Table 10 in section 1(d) of this rule must be monitored at least annually prior to initiation of land application.

5. (5) Monitoring at least monthly is required for the following:

   1. (A) Total nitrogen.
   2. (B) Ammonia nitrogen.
   3. (C) Nitrate nitrogen.
   4. (D) Phosphorus.
   5. (E) Potassium.
6. (6) PCBs must be monitored at least annually.

*Part 2540 G may be found in "Standard Methods for the Examination of Water and Wastewater", 18th Edition, 1992, available from American Public Health Association, 1015 15th Street, N.W., Washington, D.C. 20005. This method is also available for copying at the Indiana Department of Environmental Management, Office of Land Quality, 100 North Senate Avenue, Room N1154, Indianapolis, Indiana 46204.

(Water Pollution Control Division; 327 IAC 6.1-7-4; filed May 15, 1998, 10:20 a.m.: 21 IR 3807; readopted filed Jan 10, 2001, 3:23 p.m.: 24 IR 1518; filed Jul 7, 2003, 4:25 p.m.: 26 IR 3624; errata filed Feb 6, 2006, 11:15 a.m.: 29 IR 1937; readopted filed Nov 21, 2007, 1:16 p.m.: 20071219-IR-327070553BFA; readopted filed Jul 29, 2013, 9:21 a.m.: 20130828-IR-327130176BFA; readopted filed Jun 14, 2019, 1:59 p.m.: 20190710-IR-327190246BFA; readopted filed Oct 18, 2024, 1:57 p.m.: 20241113-IR- 327230810RFA)