40 CFR 52.1471 - Classification of regions.

Regulations last checked for updates: May 03, 2025

Title 40 - Protection of Environment last revised: Nov 03, 2025

§ 52.1471 - Classification of regions.

The Nevada plan is evaluated on the basis of the following classifications:

Air quality control region	Pollutant
Air quality control region	Particulate matter	Sulfur oxides	Nitrogen dioxide	Carbon monoxide	Ozone
Las Vegas Intrastate	I	III	III	I	I
Northwest Nevada Intrastate	I	III	III	III	III
Nevada Intrastate	IA	III	III	III	III

[80 FR 67663, Nov. 3, 2015]

authority: 42 U.S.C. 7401

cite as: 40 CFR 52.1471