Air Plan Approval; Pennsylvania; Interim Final Determination To Stay and Defer Sanctions Related to Reasonably Available Control Technology Requirements for Keystone, Conemaugh, Homer City and Montour Generating Facilities for the 1997 and 2008 Ozone National Ambient Air Quality Standards
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Issuing agencies
Abstract
The Environmental Protection Agency (EPA) is making an interim final determination (IFD) that Pennsylvania has submitted revisions to the SIP that satisfy the requirements under the Clean Air Act (CAA) to implement RACT for these EGUs for the 1997 and 2008 ozone NAAQS. The effect of this IFD is to stay emission offset sanctions and defer the imposition of highway funding sanctions triggered by an August 2022 EPA partial disapproval of a prior Pennsylvania SIP addressing RACT for these EGUs. Proposed elsewhere in this issue of the Federal Register, EPA is proposing approval of a revision to Pennsylvania's State implementation plan (SIP), as submitted April 10, 2024, to address reasonably available control technology (RACT) nitrogen oxides (NO<INF>X</INF>) emission limits and requirements for the coal-fired electric generating units (EGUs) equipped with selective catalytic reduction (SCR) at the Keystone, Conemaugh, Homer City, and Montour facilities for the 1997 and 2008 ozone national ambient air quality standards (NAAQS).
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