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


### Answer
**Indirect source** is defined as the following in *42 U.S.C. § 7410*:

> a facility, building, structure, installation, real property, road, or highway which attracts, or may attract, mobile sources of pollution

#### Citation:
  - *42 U.S.C. § 7410*
  - Heading: **CHAPTER 85-AIR POLLUTION PREVENTION AND CONTROL > SUBCHAPTER I-PROGRAMS AND ACTIVITIES > Part A-Air Quality and Emission Limitations**

