Regulation & law · 16/10/2009

EPA Approves Redesignation of Great Smoky Mountains National Park 1997 8-Hour Ozone Nonattainment Area to Attainment

The US Environmental Protection Agency (EPA) has approved North Carolina's request to redesignate the Great Smoky Mountains National Park 1997 8-hour ozone nonattainment area to attainment, meeting the 1997 8-hour ozone national ambient air quality standards (NAAQS). The approval also includes a State Implementation Plan (SIP) revision with a 2020 end year for the area, which includes a maintenance plan for reducing nitrogen oxide emissions from motor vehicles.