---
kind: "section"
citation: "40 C.F.R. § 52.14"
title: "40"
number: "52.14"
heading: "State ambient air quality standards."
url: "https://uscodex.org/cfr/40/52.14"
---

# §52.14. State ambient air quality standards.


Any ambient air quality standard submitted with a plan which is less stringent than a national standard is not considered part of the plan.


## Notes

### Source

Source: 37 FR 10846, May 31, 1972, unless otherwise noted.

### Authority

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

### Amendments

[40 FR 5521, Feb. 6, 1975]