The Environmental Protection Agency (EPA) is approving a state implementation plan (SIP) revision formally submitted by the Maryland Department of the Environment (MDE) on behalf of the State of Maryland. The revision provides the State of Maryland's certification that its existing emissions statement program satisfies the emissions statement requirements of the Clean Air Act (CAA) for the 2015 ozone National Ambient Air Quality Standard (NAAQS). EPA is approving the State of Maryland's emissions statement program certification for the 2015 ozone NAAQS as a SIP revision in accordance with the requirements of the CAA.