40 C.F.R. § 52.2721

Current through October 31, 2024
Section 52.2721 - Classification of regions

The Puerto Rico 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)
Puerto RicoIAIAIIIIIIIII

40 C.F.R. §52.2721

37 FR 10905, May 31, 1972