§ 52.1221. Classification of regions.
67 words·~1 min read·
/us/cfr/t40/s§ 52.1221·A research copy — for the controlling text, always check the official state or federal source. Not legal advice.
The Minnesota 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) Central Minnesota IntrastateIIIIIIIIIIIIII Southeast Minnesota-La Crosse (Wisconsin) InterstateIIIaIIIIIIIII Duluth (Minnesota)-Superior (Wisconsin) InterstateIIIIIIIIIIII Metropolitan Fargo-Moorhead InterstateIIIIIIIIIIIIII Minneapolis-St. Paul IntrastateIIIIIIIII Northwest Minnesota IntrastateIIIIIIIIIIIIII Southwest Minnesota IntrastateIIIIIIIIIIIIIII [37 FR 10874, May 31, 1972, as amended at 39 FR 16346, May 8, 1974]