Every owner or operator of a new emission source was required to comply with the standards and limitations of this Part by April 14, 1972.
Except as otherwise provided in the next paragraph, every owner or operator of an existing emission source was required to comply with the standards and limitations of this Part by December 31, 1973.
Every owner or operator of an existing coal fired fuel combustion emission source was required to comply with the applicable standards and limitations of this Part by May 30, 1975.
Ill. Admin. Code tit. 35, pt. 217, subpt. X, app C