Code of Federal Regulations (Last Updated: April 5, 2024) |
Title 40 - Protection of Environment |
Chapter I - Environmental Protection Agency |
SubChapter C - Air Programs |
Part 52 - Approval and Promulgation of Implementation Plans |
Subpart I - Delaware |
§ 52.421 - Classification of regions.
Latest version.
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§ 52.421 Classification of regions.
The Delaware 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) Metropolitan Philadelphia Interstate I I III I I Southern Delaware Intrastate III III III III III [37 FR 10856, May 31, 1972, as amended at 39 FR 16345, May 8, 1974]