GroundRules
40 CFR 52.1771: 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 II—North Carolina
The North Carolina plan was evaluated on the basis of the following classifications:
Air quality control region Pollutant
Particulate matter Sulfur oxides Nitrogen dioxide Carbon monoxide Photochemical oxidants (hydrocarbons)
Western Mountain Intrastate I III III III III
Eastern Mountain Intrastate I III III III III
Metropolitan Charlotte Interstate I II III III I
Northern Piedmont Intrastate I III III III III
Eastern Piedmont Intrastate I III III III III
Northern Coastal Intrastate I III III III III
Southern Coastal Intrastate II III III III III
Sandhills Intrastate II III III III III
Collected 2026-08-27T02:26:04Z. Source file · JSON