Air Plan Approval; Illinois; Prevention of Significant Deterioration

Publication Date: 
Wednesday, April 28, 2021 - 4:00am

The Environmental Protection Agency (EPA) is proposing to approve revisions to the Illinois State Implementation Plan (SIP) that were submitted by the Illinois Environmental Protection Agency (IEPA) on September 22, 2020. These revisions implement new preconstruction permitting regulations for certain new or modified sources of air pollution in attainment and unclassifiable areas under the Prevention of Significant Deterioration (PSD) program of the Clean Air Act (CAA). Currently, the PSD program in Illinois is operated under a Federal Implementation Plan (FIP).

Environmental Protection Agency