Classification of regions.

§ 52.51 Classification of regions.

The Alabama 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)
Alabama & Tombigbee Rivers IntrastateIIIIIIIIIIIIII
Columbus (Georgia)-Phenix City (Alabama) InterstateIIIIIIIIIIIII
East Alabama IntrastateIIIIIIIIIIIII
Metropolitan Birmingham IntrastateIIIIIIII
Mobile (Alabama)-Pensacola-Panama City (Florida)-Southern Mississippi InterstateIIIIIIIII
Southeast Alabama IntrastateIIIIIIIIIIIIII
Tennessee River Valley (Alabama)-Cumberland Mountains (Tennessee) InterstateIIIIIIIIIII
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