Illinois Administrative Code
Title 35 - ENVIRONMENTAL PROTECTION
Part 211 - DEFINITIONS AND GENERAL PROVISIONS
Subpart B - DEFINITIONS
Section 211.1324 - Commence Operation

For purposes of allocation of allowances as described in 35 Ill. Adm. Code 217, "commence operation" means with regard to a stationary boiler, combustion turbine, or combined cycle system to have begun any mechanical, chemical, or electronic process, including, start-up of the unit's combustion chamber. Such date shall remain the unit's date of commencement of operation even if the unit is subsequently modified, reconstructed, or repowered.