Environmental Protection Agency October 4, 2018 – Federal Register Recent Federal Regulation Documents

The Environmental Protection Agency (EPA) is taking final action to approve a portion of a revision to the Chattanooga/Hamilton County portion of the Tennessee State Implementation Plan (SIP) submitted by the State of Tennessee through the Tennessee Department of Environment and Conservation (TDEC) on behalf of Chattanooga/Hamilton County Air Pollution Control Bureau (Chattanooga/Hamilton County) on June 25, 2008. The changes to the SIP that EPA is taking final action to approve include changes to Chattanooga/Hamilton County's air quality standards for carbon monoxide, lead, nitrogen dioxide, particulate matter, ozone, and sulfur dioxide to reflect the current National Ambient Air Quality Standards (NAAQS). The portions of the SIP revision that EPA is approving are consistent with the requirements of the Clean Air Act (CAA or Act).

The Environmental Protection Agency (EPA) is updating the materials that are incorporated by reference (IBR) into the District of Columbia State implementation plan (SIP). The regulations affected by this update have been previously submitted by the District of Columbia Department of Energy and Environment (DoEE) and approved by EPA. This update affects the SIP materials that are available for public inspection at the National Archives and Records Administration (NARA) and the EPA Regional Office.

This determination of acceptability expands the list of acceptable substitutes pursuant to the U.S. Environmental Protection Agency's (EPA) Significant New Alternatives Policy (SNAP) program. This action lists as acceptable additional substitutes for use in the refrigeration and air conditioning, foam blowing, fire suppression, cleaning solvents, and aerosols sectors.

Pursuant to the Federal Clean Air Act (CAA or the Act), the Environmental Protection Agency (EPA) is proposing to approve revisions to the Texas State Implementation Plan (SIP) submitted by the State of Texas that pertain to regulations to control air pollution from motor vehicles with mobile source incentive programs.

The Environmental Protection Agency (EPA) is taking final action to approve a State Implementation Plan (SIP) submission, submitted by the State of Mississippi, through the Mississippi Department of Environmental Quality (MDEQ), on June 26, 2018. This SIP submission addresses specific Clean Air Act (CAA or Act) requirements applicable to Mississippi state boards or bodies that approve CAA permits or enforcement orders. This submission also specifically addresses related requirements for implementation of the following national ambient air quality standards (NAAQS): 2008 8-hour Ozone, 2008 Lead, 2010 Nitrogen Dioxide (NO2), 2010 Sulfur Dioxide (SO2), and 1997, 2006 and 2012 fine particulate matter (PM2.5). Whenever EPA promulgates a new or revised NAAQS, the CAA requires the state to make a new SIP submission establishing that the existing SIP meets the various applicable requirements, or revising the SIP to meet those requirements. This type of SIP submission is commonly referred to as an ``infrastructure'' SIP. In this final action, EPA is approving the June 26, 2018, submission with respect to the CAA requirements applicable to state boards; and the related state board infrastructure SIP requirements for the 2008 8-hour Ozone, 2008 Lead, 2010 NO2, 2010 SO2 and 1997, 2006 and 2012 PM2.5, NAAQS. This action removes EPA's obligation to promulgate a Federal Implementation Plan (FIP) to address these CAA state board requirements for Mississippi.