Environmental Protection Agency December 22, 2016 – Federal Register Recent Federal Regulation Documents

In this rulemaking, the Environmental Protection Agency (EPA) is proposing a limited Federal Implementation Plan (FIP) under the Clean Air Act (CAA or Act) to apply to the North Coast Unified Air Quality Management District (North Coast Unified AQMD or District) in California. This limited FIP would implement provisions to regulate fine particulate matter (PM2.5) under the CAA Prevention of Significant Deterioration (PSD) program within the District. The EPA previously issued two findings of failure to submit a State Implementation Plan (SIP) addressing these PSD requirements and also issued a partial disapproval action applicable to the North Coast Unified AQMD portion of the California SIP that triggered the duty under CAA section 110(c)(1) for the EPA to promulgate this limited FIP. If we finalize this action as proposed, the EPA will be the CAA PSD permitting authority for any new or modified major sources subject to PSD review for PM2.5 or its precursors within the District.

The Environmental Protection Agency (EPA) is approving a revision to the Mississippi State Implementation Plan (SIP), submitted by the Mississippi Department of Environmental Quality, on May 23, 2016, addressing the Clean Air Act (CAA or Act) interstate transport (prongs 1 and 2) infrastructure SIP requirements for the 2010 1-hour Nitrogen Dioxide (NO2) National Ambient Air Quality Standard (NAAQS). The CAA requires that each state adopt and submit a SIP for the implementation, maintenance, and enforcement of each NAAQS promulgated by EPA, commonly referred to as an ``infrastructure SIP.'' Specifically, EPA is approving Mississippi's May 23, 2016, SIP submission addressing prongs 1 and 2, to ensure that air emissions in the State do not significantly contribute to nonattainment or interfere with maintenance of the 2010 1-hour NO2 NAAQS in any other state.