---
kind: "section"
citation: "40 C.F.R. § 52.2452"
title: "40"
number: "52.2452"
heading: "Visibility protection."
url: "https://uscodex.org/cfr/40/52.2452"
---

# §52.2452. Visibility protection.

- (a) **Reasonably Attributable Visibility Impairment.** The requirements of section 169A of the Clean Air Act are not met because the plan does not include approvable measures for meeting the requirements of [40 CFR 51.305](/cfr/40/51.305.md) for protection of visibility in mandatory Class I Federal areas.
- (b) -(f) [Reserved]
- (g) EPA converts its limited approval/limited disapproval of Virginia's regional haze program to a full approval. This SIP revision changes Virginia's reliance from the Clean Air Interstate Rule to the Cross-State Air Pollution Rule to meet the regional haze SIP best available retrofit technology requirements for certain sources and to meet reasonable progress requirements.

## Notes

### Amendments

[50 FR 28553, July 12, 1985, as amended at 52 FR 45137, Nov. 24, 1987; 77 FR 33659, June 7, 2012; 77 FR 35291, June 13, 2012; 82 FR 3129, Jan. 10, 2017; 83 FR 42222, Aug. 21, 2018]

### Authority

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

### Amendments

[40 FR 5521, Feb. 6, 1975]

### Amendments

[50 FR 28553, July 12, 1985, as amended at 52 FR 45137, Nov. 24, 1987; 77 FR 33659, June 7, 2012; 77 FR 35291, June 13, 2012; 82 FR 3129, Jan. 10, 2017; 83 FR 42222, Aug. 21, 2018]