Regulated Sources Under the Clean Air Act

This lesson will introduce you to the categories of sources of air pollution that the Clean Air Act regulates, including stationary sources, mobile sources, and indirect sources. You will learn about the statutory definitions for each of these sources and how to distinguish among these sources.

This lesson can be used as an introduction to the Clean Air Act or as the start of your review of Clean Air Act regulation. You do not need any outside materials to complete this lesson. If you are unfamiliar with the Clean Air Act, you should complete this lesson BEFORE attempting the lessons entitled "Clean Air Act Stationary Sources and Criteria Pollutants" and "Clean Air Act Stationary Sources and Hazardous Air Pollutants."

Learning Outcomes

On completion of the lesson, the student will be able to:

1. Discuss the two categories of sources that emit air pollutants under the Clean Air Act.
2. Define stationary sources as all non-mobile sources of air pollutants, such as buildings, structures, and facilities.
3. Define mobile sources as vehicles, especially motor vehicles, nonroad vehicles, and aircraft.