Regulation & law · 12/10/2012Updated: 10/17/2026 · 1 min read

EPA Approves North Carolina's Reasonable Further Progress Plan for 1997 8-Hour Ozone NAAQS

The US Environmental Protection Agency (EPA) has approved North Carolina's revised implementation plan to address the 1997 8-hour ozone national ambient air quality standards (NAAQS) for the North Carolina portion of the Charlotte-Gastonia-Rock Hill bi-state area, which includes seven counties in North Carolina and a portion of York County in South Carolina.