### Question
How is the term stationary source defined?


### Answer
The term **stationary source** is defined in *42 U.S.C. § 7411* as the following:

> any building, structure, facility, or installation which emits or may emit any air pollutant

#### Citation:
  - *42 U.S.C. § 7411*
  - Heading: **CHAPTER 83-ENERGY EXTENSION SERVICE > SUBCHAPTER I-PROGRAMS AND ACTIVITIES > Part A-Air Quality and Emission Limitations**

