InstituteAir QualityStationary Emission SourcesAir ProgramsAir EmissionsMobile Emission SourcesAir ProgramsAir PermittingEnglishAnalysisFocus AreaCompliance and Exceptions (Level 2)USA
What types of air emission sources are regulated?
['Air Programs']

- The CAA regulates air emissions of pollutants for stationary and mobile sources.
The Clean Air Act (CAA) regulates air emissions of pollutants for two types of industry sources:
- Stationary sources that are any building, structure, facility, or installation which emits or may emit any air pollutant.
- Mobile sources that include motor vehicles, aircraft, ships, nonroad vehicles, nonroad engines, and the fuels associated with these sources.
Depending on the type of source and pollutants involved, various fuel standards and/or environmental permitting processes are necessary under Environmental Protection Agency (EPA) rules.