§ 52.2171. Classification of regions.
49 words·~1 min read·
/us/cfr/t40/s§ 52.2171·A research copy — for the controlling text, always check the official state or federal source. Not legal advice.
The South Dakota plan 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 Sioux City InterstateIIIIIIIIIIIIIII Metropolitan Sioux Falls InterstateIIIIIIIIIIIIII Black Hills—Rapid City IntrastateIIIIIIIIIIIIIII South Dakota IntrastateIIIIIIIIIIIIIII [37 FR 10893, May 31, 1972]