The Environmental Protection Agency (EPA) is approving a State Implementation Plan (SIP) revision submitted by the State of Maine. This revision addresses the infrastructure requirements of the Clean Air Act (CAA or Act) for the 2015 ozone National Ambient Air Quality Standards (NAAQS). This action includes all elements of these infrastructure requirements except for the ``Good Neighbor'' or ``transport'' provisions, which will be addressed in a future action.

Pursuant to the Federal Clean Air Act (CAA or the Act), the Environmental Protection Agency (EPA) is approving revisions to the Texas State Implementation Plan (SIP) to meet the Reasonable Further Progress (RFP) requirements for the Houston-Galveston-Brazoria (HGB) serious ozone nonattainment area for the 2008 ozone National Ambient Air Quality Standard (NAAQS). Specifically, EPA is approving the RFP demonstration and associated Motor Vehicle Emission Budgets (MVEBs), and a revised 2011 base year emissions inventory (EI) for the HGB area.

The Environmental Protection Agency (EPA) is taking final action to approve a revision to the Arizona State Implementation Plan (SIP). This revision concerns emissions of sulfur dioxide (SO<INF>2</INF>) from the copper smelter in Miami, Arizona. We are approving the rescission of two Arizona Department of Environmental Quality (ADEQ) Arizona Administrative Code (A.A.C.) provisions from the Arizona SIP that are no longer needed to regulate this emission source under the Clean Air Act (CAA or the ``Act'').

The Environmental Protection Agency (EPA) is approving state implementation plan (SIP) revisions submitted by State of Utah on November 5, 2019. The revisions amend R307-204 to meet the requirements set forth in Utah's 2019 House Bill (H.B.) 155. This action is being taken under section 110 of the Clean Air Act (CAA).