### Question
How does the law define area source?


### Answer
Under *42 U.S.C. § 7412*, **area source** is defined as:

> any stationary source of hazardous air pollutants that is not a major source

#### Citation:
  - *42 U.S.C. § 7412*
  - Heading: **CHAPTER 83-ENERGY EXTENSION SERVICE > SUBCHAPTER I-PROGRAMS AND ACTIVITIES > Part A-Air Quality and Emission Limitations**

