U.S. EPA has approved revisions to Arkansas’ clean air plan for regional haze and withdrawn a portion of the federal regional haze plan. The state plan addresses emissions that impact visibility at national parks and wilderness areas in Arkansas and downwind states, and the revisions address Clean Air Act requirements for particulate matter and sulfur dioxide as they relate to best available retrofit technology for electric generating units.
EPA worked closely with Arkansas for the last two years to update the state’s plan and replace the federal implementation plan. States must submit plans to EPA for achieving progress to reduce harmful emissions of nitrogen oxides, sulfur dioxide, and particulate matter. Arkansas’ plan includes the reduction of these pollutants using best-available retrofit technology at seven electric-generating units.