CFR > Title 40 - Protection of Environment > CHAPTER I—ENVIRONMENTAL PROTECTION AGENCY > SUBCHAPTER C—AIR PROGRAMS (Parts 50–99) > PART 52—APPROVAL AND PROMULGATION OF IMPLEMENTATION PLANS > SUBPART KK—Ohio (§52.1870 to §52.1919) > 52.1871—Classification of regions.

52.1871—Classification of regions.

The Ohio plan was evaluated on the basis of the following classifications:
Air quality control region Pollutant
Particulate matter Sulfur oxides Nitrogen dioxide Carbon monoxide Ozone
Greater Metropolitan Cleveland Intrastate I I III III I
Huntington (West Virginia)-Ashland (Kentucky)-Portsmouth-Ironton (Ohio) Interstate I III III III III
Mansfield-Marion Intrastate II II III III III
Metropolitan Cincinnati Interstate I II III III I
Metropolitan Columbus Intrastate I III III III I
Metropolitan Dayton Intrastate I II III III I
Metropolitan Toledo Interstate I I III III I
Northwest Ohio Intrastate II I III III III
Northwest Pennsylvania-Youngstown Interstate I II III III III
Parkersburg (West Virginia)-Marietta (Ohio) Interstate I II III III III
Sandusky Intrastate III III III III III
Steubenville-Weirton-Wheeling Interstate I I III III III
Wilmington-Chillicothe-Logan Intrastate III III III III III
Zanesville-Cambridge Intrastate II IA III III III

Code of Federal Regulations

[37 FR 10886, May 31, 1972, as amended at 39 FR 16347, May 8, 1974; 45 FR 72146, Oct. 31, 1980]