Title 40

SECTION 52.1771

52.1771 Classification of regions.

§ 52.1771 Classification of regions.

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
[37 FR 10884, May 31, 1972]