Fab
Fab means the portion of an electronics manufacturing facility located in a separate physical structure that began manufacturing on a certain date.
Source
40 CFR § 98.98
Scoping language
Except as provided in this section, all of the terms used in this subpart have the same meaning given in the Clean Air Act and subpart A of this part. If a conflict exists between a definition provided in this subpart and a definition provided in subpart A, the definition in this subpart takes precedence for the reporting requirements in this subpart.