Illinois Administrative Code
Title 35 - ENVIRONMENTAL PROTECTION
Part 204 - PREVENTION OF SIGNIFICANT DETERIORATION
Subpart B - DEFINITIONS
Section 204.210 - Actual Emissions

a) "Actual emissions" means the actual rate of emissions of a regulated NSR pollutant from an emissions unit, as determined in accordance with subsections (b) through (d), except that this definition shall not apply for calculating whether a significant emissions increase has occurred, or for establishing a PAL under Subpart K. Instead, Sections 204.240 and 204.600 shall apply for those purposes.

b) In general, actual emissions as of a particular date shall equal the average rate, in tons per year, at which the unit actually emitted the pollutant during a consecutive 24-month period that precedes the particular date and that is representative of normal source operation. The Agency shall allow the use of a different time period upon a determination that it is more representative of normal source operation. Actual emissions shall be calculated using the unit's actual operating hours, production rates, and types of materials processed, stored, or combusted during the selected time period.

c) The Agency may presume that source-specific allowable emissions for the unit are equivalent to the actual emissions of the unit.

d) For any emissions unit that has not begun normal operations on the particular date, actual emissions shall equal the potential to emit of the unit on that date.