### Question
Can you define what affected source means?


### Answer
**Affected source** is defined as the following in *42 U.S.C. § 7661*:

> given such term in subchapter IV–A of this chapter.

#### Citation:
  - *42 U.S.C. § 7661*
  - Heading: **CHAPTER 85-AIR POLLUTION PREVENTION AND CONTROL > SUBCHAPTER V-PERMITS**

