Environmental Protection Agency January 18, 2022 – Federal Register Recent Federal Regulation Documents

The Environmental Protection Agency (EPA) is proposing to disapprove a State Implementation Plan (SIP) revision submitted by the State of Wyoming on May 14, 2020, and supplemented in September and October 2020, addressing regional haze (``Wyoming's 2020 SIP revision''). Wyoming's 2020 SIP revision reverses the State's 2011 decision that emission limits consistent with the installation of selective catalytic reduction (SCR) for the Jim Bridger power plant, Units 1 and 2, are necessary to make reasonable progress under the State's long-term strategy for the first regional haze planning period. The SIP revision contains a source-specific nitrogen oxide (NOX) reasonable progress analysis and determination that currently installed controls (low-NOX burners with separated overfire air (LNB/SOFA)) are sufficient for reasonable progress during the first planning period for Jim Bridger Units 1 and 2, and that the emission limits associated with the installation of SCR are no longer necessary. The SIP revision also contains plant-wide monthly and annual NOX and sulfur dioxide (SO2) emission limits for the Jim Bridger power plant, Units 1-4. EPA is proposing to disapprove this SIP revision in full. The agency is proposing this action pursuant to sections 110 and 169A of the Clean Air Act (CAA).

The Environmental Protection Agency (EPA) is partially approving and partially disapproving a revision to the Ohio State Implementation Plan (SIP) intended to provide for attainment of the 2010 primary, health-based 1-hour sulfur dioxide (SO2) national ambient air quality standard (NAAQS or ``standard'') for the Muskingum River SO2 nonattainment area. This SIP revision (hereinafter referred to as the Muskingum River SO2 plan or plan) includes Ohio's attainment demonstration and other attainment planning elements required under the Clean Air Act (CAA). By this action, EPA is approving the base year emissions inventory and affirming that the nonattainment new source review requirements for the area have been met. EPA is disapproving the attainment plan, since the plan relies on, among other things, acquisition of a parcel of land by a facility located within the nonattainment area, Globe Metallurgical (Globe), that has not occurred. Additionally, EPA is disapproving the plan for failing to meet the requirements for meeting reasonable further progress (RFP) toward attainment of the NAAQS, reasonably available control measures/ reasonably available control technology (RACM/RACT), emission limitations and control measures as necessary to attain the NAAQS, and contingency measures.