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) applicable to the Dallas-Fort Worth (DFW) serious ozone nonattainment area for the 2008 ozone National Ambient Air Quality Standard (NAAQS). Specifically, the EPA is approving a revised 2011 base year emissions inventory (EI) for the DFW area.