40 C.F.R. § 52.1321

Current through March 31, 2024

Section 52.1321 - Classification of regions

The Missouri plans were 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 Kansas City Interstate	I	III	III	I	I
Southwest Missouri Intrastate	I	III	III	III	III
Southeast Missouri Intrastate	III	III	III	III	III
Northern Missouri Intrastate	II	III	III	III	III
Metropolitan St. Louis Interstate	I	I	III	I	I

40 C.F.R. §52.1321

37 FR 10875, May 31, 1972, as amended at 39 FR 16347, May 8, 1974