Finding of Failure To Submit a State Implementation Plan; Maryland; Interstate Transport Requirements for the 2008 8-Hour National Ambient Air Quality Standards for Ozone

The Environmental Protection Agency (EPA) is taking final action finding that Maryland has failed to submit an infrastructure state implementation plan (SIP) to satisfy certain interstate transport requirements of the Clean Air Act (CAA) with respect to the 2008 8-hour ozone national ambient air quality standard (NAAQS). Specifically, these requirements pertain to the obligation to prohibit emissions which significantly contribute to nonattainment, or interfere with maintenance, of the 2008 8-hour ozone NAAQS in other states. This finding of failure to submit establishes a 2-year deadline for EPA to promulgate a federal implementation plan (FIP) to address the interstate transport SIP requirements pertaining to significant contribution to nonattainment and interference with maintenance of the 2008 ozone NAAQS in other states unless, prior to EPA promulgating a FIP, the state submits, and EPA approves, a SIP that meets these requirements.