40 C.F.R. § 52.921

Current through September 30, 2024
Section 52.921 - Classification of regions

The Kentucky 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)
Appalachian IntrastateIIIIIIIIIIIIII
Bluegrass IntrastateIIIIIIIIIIIIII
Evansville (Indiana)-Owensboro-Henderson (Kentucky) InterstateIIIIIIIIIIII
Huntington (West Virginia)-Ashland (Kentucky)-Portsmouth-Ironton (Ohio) InterstateIIIIIIIIIIIII
Louisville InterstateIIIIIIIII
Metropolitan Cincinnati InterstateIIIIIIIIII
North Central Kentucky IntrastateIIIIIIIIIIIIII
Paducah (Kentucky)-Cairo (Illinois) InterstateIIIIIIIIIIII
South Central Kentucky IntrastateIIIIIIIIIIIIIII

40 C.F.R. §52.921

37 FR 10868, May 31, 1972, as amended at 39 FR 16346, May 8, 1974