Due to the receipt of an adverse comment, the Environmental Protection Agency (EPA) is withdrawing the August 16, 2017, direct final rule approving a State Implementation Plan (SIP) revision submitted by the State of Vermont. Vermont's SIP revision addresses requirements of the Clean Air Act (CAA) and EPA's rules that require states to submit periodic reports describing the progress toward reasonable progress goals (RPGs) established for regional haze and a determination of adequacy of the State's existing regional haze SIP. This action is being taken in accordance with the Clean Air Act.