---
kind: "section"
citation: "40 C.F.R. § 51.190"
title: "40"
number: "51.190"
heading: "Ambient air quality monitoring requirements."
url: "https://uscodex.org/cfr/40/51.190"
---

# §51.190. Ambient air quality monitoring requirements.


The requirements for monitoring ambient air quality for purposes of the plan are located in [subpart C of part 58](/cfr/40/part58-subpartC.md) of this chapter.


## Notes

### Amendments

[44 FR 27569, May 10, 1979]

### Authority

Authority: Secs. 110, 301(a), 313, 319, Clean Air Act (42 U.S.C. 7410, 7601(a), 7613, 7619).

### Authority

Authority: 23 U.S.C. 101; 42 U.S.C. 7401-7671q.

### Source

Source: 36 FR 22398, Nov. 25, 1971, unless otherwise noted.

### Amendments

[44 FR 27569, May 10, 1979]