---
kind: "section"
citation: "40 C.F.R. § 52.690"
title: "40"
number: "52.690"
heading: "Visibility protection."
url: "https://uscodex.org/cfr/40/52.690"
---

# §52.690. Visibility protection.

- (a) The requirements of section 169A of the Clean Air Act are not met, because the plan does not include approvable procedures for protection of visibility in mandatory Class I Federal areas.
- (b) -(c) [Reserved]

## Notes

### Amendments

[50 FR 28553, July 12, 1985; 51 FR 23759, July 1, 1986, as amended at 52 FR 45137, Nov. 24, 1987; 82 FR 3129, Jan. 10, 2017]

### Authority

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

### Amendments

[40 FR 5521, Feb. 6, 1975]

### Amendments

[50 FR 28553, July 12, 1985; 51 FR 23759, July 1, 1986, as amended at 52 FR 45137, Nov. 24, 1987; 82 FR 3129, Jan. 10, 2017]