40 CFR §96.80
Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
A unit that is in the State, is not a NOX Budget unit under § 96.4, vents all of its emissions to a stack, and is operating, may qualify, under this subpart, to become a NOX Budget opt-in source. A unit that is a NOX Budget unit, is covered by a retired unit exemption under § 96.5 that is in effect, or is not operating is not eligible to become a NOX Budget opt-in source.