35 Ill. Adm. Code 204.400
Federally Enforceable
Section 204.400 Federally Enforceable
"Federally enforceable" means all limitations and
conditions that are enforceable by USEPA, including those requirements
developed under 40 CFR 60, 61, 62 and 63 (incorporated by reference in Section
204.100), requirements within the SIP, any permit requirements established
under 40 CFR 52.21 (incorporated by reference in Section 204.100) or this Part
or under regulations approved under 40 CFR 51, subpart I (incorporated by
reference in Section 204.100), including operating permits issued under a
USEPA-approved program that is incorporated into the SIP and expressly requires
adherence to any permit issued under such program.