Emissions means air pollutants exhausted from a unit or source into the atmosphere, as measured, recorded, and reported to the Administrator by the designated representative, and as modified by the Administrator:
(1) In accordance with this subpart; and
(2) With regard to a period before the unit or source is required to measure, record, and report such air pollutants in accordance with this subpart, in accordance with part 75 of this chapter.
40 CFR § 97.502
The terms used in this subpart shall have the meanings set forth in this section as follows, provided that any term that includes the acronym CSAPR shall be considered synonymous with a term that is used in a SIP revision approved by the Administrator under 52.38 or 52.39 of this chapter and that is substantively identical except for the inclusion of the acronym TR in place of the acronym CSAPR: