Regulation & law · 29/08/2013Updated: 10/17/2026 · 1 min read

EPA Approves Ohio's Air Quality Plans for 1997 Fine Particulate Matter Standard

The Environmental Protection Agency (EPA) has approved Ohio's plans to maintain the 1997 annual fine particulate matter (PM 2.5) standard in the Parkersburg-Marietta and Wheeling areas, which will remain in effect until 2023, as part of its efforts to comply with the Clean Air Act (CAA)