Designated pollutant
Designated pollutant means any air pollutant, the emissions of which are subject to a standard of performance for new stationary sources, but for which air quality criteria have not been issued and that is not included on a list published under section 108(a) or section 112(b)(1)(A) of the Act.
Source
40 CFR § 60.21
Scoping language
Terms used but not defined in this subpart shall have the meaning given them in the Act and in subpart A: