40 CFR 52.921 - Classification of regions.

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Title 40: Protection of Environment

CHAPTER I: ENVIRONMENTAL PROTECTION AGENCY (CONTINUED)

SUBCHAPTER C: AIR PROGRAMS (CONTINUED)

PART 52: APPROVAL AND PROMULGATION OF IMPLEMENTATION PLANS

Subpart S: Kentucky

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

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

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