On August 27, 2020, the Board adopted new and amended rules to establish Illinois’ Prevention of Significant Deterioration (PSD) permitting program. The rulemaking began with the Illinois Environmental Protection Agency (IEPA) filing its proposal as required by Section 9.1 of the Environmental Protection Act (415 ILCS 5/9.1(c) (2018); see Public Act 99-463, eff. Jan. 1, 2016). Having a State PSD program will effectuate two main changes. First, for PSD permitting, IEPA will assume responsibility from the United States Environmental Protection Agency (USEPA). Second, for hearing PSD permit appeals, the Board will assume responsibility from USEPA’s Environmental Appeals Board.
Publications 
