Approval and Promulgation of Implementation Plans; Arkansas; Revisions to Minor New Source Review Program

Pursuant to the Federal Clean Air Act (CAA or the Act), the Environmental Protection Agency (EPA) is approving revisions to the Arkansas State Implementation Plan (SIP) minor New Source Review (NSR) program submitted on July 26, 2010, and March 24, 2017, including supplemental information provided on November 30, 2015, May 26, 2016, July 5, 2017, July 27, 2017, and March 16, 2018. Specifically, we are proposing to approve revisions that revise the minor NSR permitting thresholds and de minimis levels, as well as, additional non- substantive revisions contained in those submittals. This final action is consistent with the requirements of section 110 of the CAA.