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Illinois Construction Permit Program Approval History

Federal Register Date	Type	Federal Register Notices
9-27-1995	Final	Nonattainment NSR Rules (9-23-94 Proposed Action)
5-13-2003	Direct - Final	Nonattainment NSR Amendments
4-30-2007	Direct - Final	Permit Exemptions
9-9-2021	Final	Prevention of Significant Deterioration (previous action: 4-28-21 Proposed Approval)

Prior to October 12, 2021, EPA had delegated the authority to implement the federal PSD program to the Illinois Environmental Protection Agency pursuant to 40 CFR 52.21.