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42 U.S.C. 7401 et seq.
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Subscribe to: 40 CFR 52.1771
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Nomenclature changes to part 52 appear at 81 FR 74586, Oct. 26, 2016.
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]