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


### Answer
**Stationary source** is defined as the following in *42 U.S.C. § 7602*:

> generally any source of an air pollutant except those emissions resulting directly from an internal combustion engine for transportation purposes or from a nonroad engine or nonroad vehicle as defined in section 7550 of this title

#### Citation:
  - *42 U.S.C. § 7602*
  - Heading: **SUBCHAPTER I-PROGRAMS AND ACTIVITIES > Subchapter Referred to in Other Sections**

