Environmental Protection Agency April 26, 2011 – Federal Register Recent Federal Regulation Documents

EPA is approving a revision to the Illinois State Implementation Plan (SIP) for ozone. The State is revising its definition of volatile organic compound (VOC) to add two chemical compounds to the list of compounds that are exempt from being considered a VOC. This revision is based on EPA's 2009 determination that these two compounds do not significantly contribute to ozone formation.