Environmental Protection Agency November 5, 2019 – Federal Register Recent Federal Regulation Documents

The Environmental Protection Agency (EPA) is approving a revision to the Illinois State implementation plan (SIP). The revision, submitted on May 30, 2019, incorporates several revisions to the Illinois air pollution control rules entitled ``Part 243Ambient Air Quality Standards'' related to the National Ambient Air Quality Standards (NAAQS). The revision updates the ``List of Designated Reference and Equivalent Methods'' in response to EPA rulemakings. In addition, Illinois addresses EPA's revocation of the 1971 sulfur dioxide and the 1978 lead NAAQS.