Authority: IC 13-14-8; IC 13-17-3-4; IC 13-17-3-11

Affected: IC 13-15; IC 13-17

Sec. 2. The following sources shall apply for an air operating permit as described in this rule:

1. (1) A source that meets the applicability criteria of 326 IAC 2-5.1-3(a)(1) and is not exempted under section 1 of this rule.

2. (2) A source with the potential to emit below the Part 70 thresholds as defined in 326 IAC 2-7-1(20) that includes:

   1. (A) a chromium electroplating tank;
   2. (B) a chromium anodizing tank; or
   3. (C) an operation subject to 326 IAC 20-8.
3. Sources consisting only of decorative chromium electroplating tanks that use a trivalent chromium process that incorporates a wetting agent that are subject to 326 IAC 2-5.5 are exempt from this rule.
4. (3) A source that meets the criteria for an exemption under 326 IAC 2-1.1-3 or a registration under 326 IAC 2-5.5-1 that elects to apply for a permit under this rule.

(Air Pollution Control Division; 326 IAC 2-6.1-2; filed Nov 25, 1998, 12:13 p.m.: 22 IR 1015; filed Dec 20, 2001, 4:30 p.m.: 25 IR 1572; readopted filed Oct 22, 2004, 10:35 a.m.: 28 IR 795; readopted filed Aug 25, 2010, 2:42 p.m.: 20100922-IR-326100394BFA; filed Feb 6, 2012, 2:54 p.m.: 20120307-IR-326090493FRA; readopted filed Jun 6, 2018, 1:56 p.m.: 20180704-IR-326180168BFA; readopted filed Oct 18, 2024, 2:09 p.m.: 20241113-IR-326230809RFA; errata filed Jun 3, 2025, 1:59 p.m.: 20250618-IR-326250285ACA)