Approval and Promulgation of Implementation Plans; Louisiana; Regional Haze State Implementation Plan

The Environmental Protection Agency (EPA) is proposing to approve a revision to the Louisiana State Implementation Plan (SIP) submitted by the State of Louisiana through the Louisiana Department of Environmental Quality (LDEQ) on August 11, 2016 that addresses regional haze (RH) for the first planning period. This revision was submitted to address deficiencies identified in a previous action regarding requirements of the Federal Clean Air Act (CAA or Act) and the EPA's rules that require states to prevent any future and remedy any existing man-made impairment of visibility in mandatory Class I areas caused by emissions of air pollutants from numerous sources located over a wide geographic area (also referred to as the ``regional haze program''). This action concerns Best Available Retrofit Technology for certain sources.