---
kind: "section"
citation: "40 C.F.R. § 96.181"
title: "40"
number: "96.181"
heading: "General."
url: "https://uscodex.org/cfr/40/96.181"
---

# §96.181. General.

- (a) Except as otherwise provided in [§§ 96.101 through 96.104](/cfr/40/96.101..96.104.md), [§§ 96.106 through 96.108](/cfr/40/96.106..96.108.md), and subparts [BB](/cfr/40/subpartBB.md) and [CC](/cfr/40/subpartCC.md) and subparts [FF](/cfr/40/subpartFF.md) through [HH](/cfr/40/subpartHH.md) of this part, a CAIR NOX opt-in unit shall be treated as a CAIR NOX unit for purposes of applying such sections and subparts of this part.
- (b) Solely for purposes of applying, as provided in this subpart, the requirements of subpart HH of this part to a unit for which a CAIR opt-in permit application is submitted and not withdrawn and a CAIR opt-in permit is not yet issued or denied under this subpart, such unit shall be treated as a CAIR NOX unit before issuance of a CAIR opt-in permit for such unit.

## Notes

### Source

Source: 70 FR 25339, May 12, 2005, unless otherwise noted.

### Authority

Authority: 42 U.S.C. 7401, 7403, 7410, 7601, and 7651, et seq.

### Source

Source: 63 FR 57514, Oct. 27, 1998, unless otherwise noted.