GroundRules
40 CFR 52.671: Classification of regions.
Where this section sits in the code
- Title 40—Protection of Environment
- CHAPTER I—ENVIRONMENTAL PROTECTION AGENCY
- SUBCHAPTER C—AIR PROGRAMS
- PART 52—APPROVAL AND PROMULGATION OF IMPLEMENTATION PLANS
- Subpart N—Idaho
The Idaho plan was evaluated on the basis of the following classifications:
Air quality control region Pollutants
Particulate matter Sulfur oxides Nitrogen dioxide Carbon monoxide Ozone
Eastern Idaho Intrastate I II III III III.
Eastern Washington Northern Idaho Interstate (Idaho) I II III III III.
Idaho Intrastate I III III III III.
Metropolitan Boise Intrastate II III III I III.
Collected 2026-08-27T02:26:04Z. Source file · JSON