new source
The term new source means any building, structure, facility or installation from which there is or may be the discharge of pollutants, the construction of which is commenced after the publication of proposed regulations prescribing a standard of performance under section 306 of the Act which will be applicable to such source if such standard is thereafter promulgated in accordance with section 306 of the Act.
Source
40 CFR § 401.11
Scoping language
For the purposes of parts 402 through 699 of this subchapter: