Code of Federal Regulations (Last Updated: February 15, 2024) |
Title 40 - Protection of Environment |
Chapter I - Environmental Protection Agency |
SubChapter C - Air Programs |
Part 52 - Approval and Promulgation of Implementation Plans |
Subpart QQ - South Dakota |
§ 52.2171 - Classification of regions.
Latest version.
-
§ 52.2171 Classification of regions.
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 Interstate III III III III III Metropolitan Sioux Falls Interstate II III III III III Black Hills - Rapid City Intrastate III III III III III South Dakota Intrastate III III III III III [37 FR 10893, May 31, 1972]