40 C.F.R. § 52.921

Current through October 31, 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 Intrastate	II	III	III	III	III
Bluegrass Intrastate	II	III	III	III	III
Evansville (Indiana)-Owensboro-Henderson (Kentucky) Interstate	I	II	III	III	III
Huntington (West Virginia)-Ashland (Kentucky)-Portsmouth-Ironton (Ohio) Interstate	I	III	III	III	III
Louisville Interstate	I	I	III	III	I
Metropolitan Cincinnati Interstate	I	II	III	III	I
North Central Kentucky Intrastate	II	III	III	III	III
Paducah (Kentucky)-Cairo (Illinois) Interstate	I	II	III	III	III
South Central Kentucky Intrastate	III	III	III	III	III

40 C.F.R. §52.921

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