### Question
How does CHAPTER I—ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) define stationary source?


### Answer
Under *40 CFR § 52.01*, **stationary source** is defined as:

> any building, structure, facility, or installation which emits or may emit an air pollutant for which a national standard is in effect.

#### Citation:
  - *40 CFR § 52.01*
  - Heading: **Title 40—Protection of Environment > PART 52—APPROVAL AND PROMULGATION OF IMPLEMENTATION PLANS > Subpart A—General Provisions > CHAPTER I—ENVIRONMENTAL PROTECTION AGENCY (CONTINUED)**

