Regulation & law · 03/10/2007Updated: 10/17/2026 · 1 min read

EPA Approves North Carolina's Plan to Reduce Ozone Pollution in Raleigh-Durham-Chapel Hill Area

The US Environmental Protection Agency (EPA) has approved North Carolina's plan to redesignate the Raleigh-Durham-Chapel Hill 8-hour ozone nonattainment area to attainment for the 8-hour ozone National Ambient Air Quality Standard (NAAQS), and to approve a State Implementation Plan (SIP) revision containing a maintenance plan for the area.