---
kind: "section"
citation: "40 C.F.R. § 52.1279"
title: "40"
number: "52.1279"
heading: "Visibility protection."
url: "https://uscodex.org/cfr/40/52.1279"
---

# §52.1279. Visibility protection.

- (a) [Reserved]
- (b) **Disapproval.** EPA has disapproved the portions of Mississippi's May 29, 2012, 2008 8-hour Ozone infrastructure SIP submission; July 26, 2012, 2008 8-hour Ozone infrastructure SIP resubmission; February 28, 2013, 2010, 1-hour NO2 infrastructure SIP submission; June 20, 2013, 2010 1-hour SO2 infrastructure SIP submission; and December 8, 2015, 2012, Annual PM2.5 infrastructure SIP submission that address the visibility protection (prong 4) requirements of Clean Air Act [section 110(a)(2)(D)(i)(II)](/cfr/40/110.md?p=a-2-D-i-II). EPA disapproved the prong 4 portions of these SIP submissions because Mississippi does not have a fully approved regional haze SIP that meets the requirements of [40 CFR 51.308](/cfr/40/51.308.md) and because these SIP submissions do not otherwise demonstrate that emissions within the State do not interfere with other states' plans to protect visibility.

## Notes

### Amendments

[77 FR 33657, June 7, 2012, as amended at 81 FR 33140, May 25, 2016; 86 FR 55509, Oct. 6, 2021]

### Authority

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

### Amendments

[40 FR 5521, Feb. 6, 1975]

### Amendments

[77 FR 33657, June 7, 2012, as amended at 81 FR 33140, May 25, 2016; 86 FR 55509, Oct. 6, 2021]