On November 29,2019, U.S. EPA issued a final rule redesignating the Ohio portion of the Stubenville Ohio-West Virginia nonattainment area from nonattainment to attainment of the 2010 SO2 National Ambient Air Quality Standards (NAAQS), pursuant to section 107(d)(3)(E) of the Clean Air Act. EPA determined that Ohio demonstrated that the area is attaining the SO2 standard due to permanent and enforceable SO2 emission reductions. The Agency also approved Ohio’s maintenance plan that will ensure the area continues to maintain the SO2 NAAQS.

The Ohio portion of the Stubenville nonattainment area includes Cross Creek Township, Stubenville Township, Warren Township, Wells Township, and Stubenville City. U.S. EPA’s redesignation became effective on November 29, 2019.