Operating
Operating means, with regard to a unit under 96.22(2) and 96.80, having documented heat input for more than 876 hours in the 6 months immediately preceding the submission of an application for an initial NOX Budget permit under 96.83(a).
Source
40 CFR § 96.2
Scoping language
The terms used in this part shall have the meanings set forth in this section as follows: