40 CFR 52.2021 : Protection Of Environment (§ 1.1 To Parts 1851-1899) — (§ 52.2020 To Appendix F To Part 52) — Environmental Protection Agency (Continued) (§ 52.2020 To Appendix F To Part 52) — Air Programs (Continued) (§ 52.2020 To Appendix F To Part 52) — Approval And Promulgation Of Implementation Plans (Continued) (§ 52.2020 To Appendix F To Part 52) — Pennsylvania (§ 52.2020 To § 52.2063) — Classification of regions.

4 Aug 2016

The Pennsylvania plan was evaluated on the basis of the following classifications:

Air quality control region Pollutant
Particulate matter Sulfur oxides Nitrogen dioxide Carbon monoxide Ozone (hydrocarbons)
Metropolitan Philadelphia Interstate I I III I I
Northeast Pennsylvania-Upper Delaware Valley Interstate I II III III III
South Central Pennsylvania Intrastate I II III III III
Central Pennsylvania Intrastate I III III III III
Southwest Pennsylvania Intrastate I I III I I
Northwest Pennsylvania-Youngstown Interstate I II III III III
40 CFR 52.2021
[37 FR 10889, May 31, 1972, as amended at 39 FR 16347, May 8, 1974; 45 FR 33627, May 20, 1980]