Air Plan Approval; FL: Hillsborough Area; SO2

The Environmental Protection Agency (EPA) is proposing to approve a State Implementation Plan (SIP) revision, submitted by the State of Florida through the Florida Department of Environmental Protection (FL DEP), to EPA on April 3, 2015, for the purpose of providing for attainment of the 2010 Sulfur Dioxide (SO2) National Ambient Air Quality Standards (NAAQS) in the Hillsborough County SO2 nonattainment area (hereafter referred to as the ``Hillsborough Area'' or ``Area''). The Hillsborough Area is comprised of a portion of Hillsborough County in Florida surrounding the Mosaic Fertilizer, LLC Riverview plant (hereafter referred to as ``Mosaic''). The attainment plan includes the base year emissions inventory, an analysis of the reasonably available control technology (RACT) and reasonably available control measures (RACM) requirements, a reasonable further progress (RFP) plan, a modeling demonstration of SO2 attainment, and contingency measures for the Hillsborough Area. As a part of approving the attainment demonstration, EPA is also proposing to approve into the Florida SIP the SO2 emissions limits and associated compliance parameters. This action is being taken in accordance with Clean Air Act (CAA or Act) and EPA's guidance related to SO2 attainment planning.