On January 11, 2017, EPA proposed to deny a petition from Connecticut, Delaware, Maryland, Massachusetts, New Hampshire, New York, Pennsylvania, Rhode Island and Vermont under section 176A(a) of the Clean Air Act (CAA). The petition asks the EPA to add Illinois, Indiana, Kentucky, Michigan, North Carolina, Ohio, Tennessee, West Virginia and a portion of Virginia to the Ozone Transport Region (OTR), alleging that these states significantly contribute to violations of the 2008 ozone national ambient air quality standards (NAAQS) in the OTR.

Response to December 9, 2013, Clean Air Act Section 176A Petition From Connecticut, Delaware, Maryland, Massachusetts, New Hampshire, New York, Pennsylvania, Rhode Island and Vermont

• Fact Sheet: Response to December 9, 2013, Clean Air Act Section 176A Petition From Connecticut, Delaware, Maryland, Massachusetts, New Hampshire, New York, Pennsylvania, Rhode Island and Vermont (PDF)(2 pp, 41 K)