Roofline vents
Roofline vents means an exhaust system designed to evacuate process fugitive emissions that collect in the roofline area of various process buildings (e.g., smelting building roof vents, converter building roof vents, etc.).
Source
40 CFR § 63.1459
Scoping language
Terms used in this subpart are defined in the Clean Air Act, in 63.2, and in this section as follows: