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40 CFR §76.13

Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
Excess emissions of nitrogen oxides under § 77.6 of this chapter shall be calculated as follows:
  1. (a)For a unit that is not in an approved averaging plan:
    1. (1)Calculate EEi for each portion of the calendar year that the unit is subject to a different NOX emission limitation:
    2. (2)If EEi is a negative number for any portion of the calendar year, the EE value for that portion of the calendar year shall be equal to zero (e.g., if EEi = −100, then EEi = 0).
    3. (3)Sum all EEi values for the calendar year:
  2. (b)For units participating in an approved averaging plan, when all the requirements under § 76.11(d)(1) are not met,