35 Ill. Adm. Code 203.131
Reasonable Further Progress
Section 203
Section 203.131 Reasonable
Further Progress
"Reasonable Further
Progress" means the annual incremental reductions in the emissions of the
applicable air pollutant as determined by USEPA pursuant to Part D of the Clean
Air Act (42 U.S.C. 7501 et seq.) and federal regulations adopted pursuant
thereto.