The Missouri plans were evaluated on the basis of the following classifications:

Open Table
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

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


Tried the LawStack mobile app?

Join thousands and try LawStack mobile for FREE today.

  • Carry the law offline, wherever you go.
  • Download CFR, USC, rules, and state law to your mobile device.