---
kind: "section"
citation: "40 C.F.R. § 52.985"
title: "40"
number: "52.985"
heading: "Visibility protection."
url: "https://uscodex.org/cfr/40/52.985"
---

# §52.985. Visibility protection.

- (a) **Measures addressing best available retrofit technology (BART) for electric generating unit (EGU) emissions of nitrogen oxides (NO—** X). The BART requirements for EGU NOX emissions are satisfied by [§ 52.984](/cfr/40/52.984.md).
- (b) **Other measures addressing BART.** The BART requirements for emissions other than EGU NOX emissions are satisfied by the Louisiana Regional Haze SIP approved December 21, 2017.

## Notes

### Amendments

[82 FR 60543, Dec. 21, 2017]

### Authority

Authority: 42 U.S.C. 7401 et seq.

### Amendments

[40 FR 5521, Feb. 6, 1975]

### Amendments

[82 FR 60543, Dec. 21, 2017]