Authority: IC 13-14-8; IC 13-17-3-4

Affected: IC 13-17

Sec. 6. The owner or operator of a facility subject to this rule shall comply with the following emissions monitoring requirements:

1. (1) NOx continuous emissions monitors (CEMs) shall be installed at the following facilities:

   1. (A) Steam generating units, including utility and industrial, commercial, or institutional steam generating units according to the requirements of 326 IAC 3.
   2. (B) Each portland cement long dry kiln and preheater process kiln with production capacity equal to or greater than twenty (20) tons of clinker per hour.

   3. (C) Each facility of the type listed in section 1(a)(2) of this rule unless the owner or operator demonstrates to the satisfaction of the department that a NOx continuous emissions monitor is not technically feasible after considering the following factors:

      1. (i) The physical configuration and mode of operation of the facility.
      2. (ii) The magnitude of and variability in NOx emissions.
      3. (iii) The type of control measures employed to achieve compliance with the emissions limits in section 4 of this rule.
   4. An owner or operator subject to this clause shall include in the demonstration an alternate method to demonstrate initial and continuous compliance with the emissions limits.
2. (2) NOx CEMs at facilities listed in subdivision (1) shall be certified according to procedures contained in 326 IAC 3 and 40 CFR 75* as applicable.

3. (3) Requirements that follow apply to NOx CEMs at facilities listed in subdivision (1):

   1. (A) Operating and maintenance procedures contained in 326 IAC 3 and 40 CFR 75* as applicable.
   2. (B) Data recording and reporting procedures contained in 326 IAC 3 and 40 CFR 75* as applicable, except that for the purpose of the excess emissions reporting requirement in 326 IAC 3, the excess emissions reported shall be those emissions that exceed the applicable emissions limits in section 4 of this rule.

*This document is incorporated by reference. Copies may be obtained from the Government Printing Office, 732 North Capitol Street NW, Washington, D.C. 20401 or are available for review and copying at the Indiana Department of Environmental Management, Office of Air Quality, Indiana Government Center-North, Tenth Floor, 100 North Senate Avenue, Indianapolis, Indiana 46204.

(Air Pollution Control Division; 326 IAC 10-1-6; filed May 13, 1996, 5:00 p.m.: 19 IR 2874; errata filed Dec 12, 2002, 3:35 p.m.: 26 IR 1569; filed Aug 26, 2004, 11:30 a.m.: 28 IR 74; readopted filed Oct 18, 2024, 2:09 p.m.: 20241113-IR-326230809RFA)