Air Quality Designation for the 2010 Sulfur Dioxide (SO2

On April 20, 2018, the State of Arkansas (AR), through the Arkansas Department of Environmental Quality (ADEQ) submitted a request for the Environmental Protection Agency (EPA) to assess new available information and redesignate the Independence County, AR unclassifiable area (hereinafter referred to as the ``County'' or ``Area'') for the 2010 sulfur dioxide (SO2) primary national ambient air quality standard (NAAQS) to attainment/unclassifiable. The EPA is proposing that it now has sufficient information to determine that the Area is attaining the 2010 SO2 primary NAAQS, and, therefore, is proposing to approve the State's request and redesignate the Area to attainment/unclassifiable for the 2010 primary SO2 NAAQS.