Stationary Sources of Air Pollution

Clean Air Act Section 112 Presidential Exemption Information

Request a Presidential Exemption under section 112(i)(4) of the Clean Air Act for certain National Emission Standards for Hazardous Air Pollutants by March 31, 2025.
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Stationary Sources of Air Pollution

Stationary sources of air pollution, including factories, refineries, boilers, and power plants, emit a variety of air pollutants. The Clean Air Act directs EPA to control these emissions by developing and implementing standards and guidelines.

Industry and Regulatory Action