GroundRules
40 CFR 52.2171: Classification of regions.
Where this section sits in the code
- 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
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
Collected 2026-08-27T02:26:04Z. Source file · JSON