40 C.F.R. § 52.421

Current through October 31, 2024
Section 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 InterstateIIIIIII
Southern Delaware IntrastateIIIIIIIIIIIIIII

40 C.F.R. §52.421

37 FR 10856, May 31, 1972, as amended at 39 FR 16345, May 8, 1974