2019-16052: Air Plan Approval; Kentucky: Cross-State Air Pollution Rule
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The Environmental Protection Agency (EPA) is proposing to approve revisions to the Kentucky State Implementation Plan (SIP) concerning the Cross-State Air Pollution Rule (CSAPR) submitted by Kentucky on September 14, 2018, as later clarified on December 18, 2018. Under CSAPR, large electricity generating units (EGUs) in Kentucky are subject to Federal Implementation Plans (FIPs) requiring the units to participate in CSAPR's federal trading program for annual emissions of nitrogen oxides (NO<INF>X</INF>), one of CSAPR's two federal trading programs for ozone season emissions of NO<INF>X</INF>, and one of CSAPR's two federal trading programs for annual emissions of sulfur dioxide (SO<INF>2</INF>). This action proposes to approve into the SIP the Commonwealth's regulations requiring large Kentucky EGUs to participate in CSAPR state trading programs for ozone season NO<INF>X</INF> emissions, annual NO<INF>X</INF> emissions, and annual SO<INF>2</INF> emissions integrated with the CSAPR federal trading programs, replacing the corresponding FIP requirements. EPA is proposing to approve the SIP revision concerning these CSAPR state trading programs because the SIP revision meets the requirements of the Clean Air Act (CAA or Act) and EPA's regulations for approval of a CSAPR full SIP revision replacing the requirements of a CSAPR FIP. Under the CSAPR regulations, approval of this SIP revision would automatically eliminate Kentucky units' obligations to participate in CSAPR's federal trading programs for ozone season NO<INF>X</INF> emissions, annual NO<INF>X</INF> emissions, and annual SO<INF>2</INF> emissions under the corresponding CSAPR FIPs addressing interstate transport requirements for the 1997 annual fine particulate matter (PM<INF>2.5</INF>) national ambient air quality standards (NAAQS), the 1997 8-hour ozone NAAQS, the 2006 24-hour PM<INF>2.5</INF> NAAQS, and the 2008 8-hour ozone NAAQS. Approval of the SIP revision would also satisfy Kentucky's good neighbor obligation under the CAA to prohibit emissions which will significantly contribute to nonattainment or interfere with maintenance of the 1997 8-hour ozone NAAQS, 1997 annual PM<INF>2.5</INF> NAAQS, 2006 24-hour PM<INF>2.5</INF> NAAQS, and the 2008 8-hour ozone NAAQS.
The agency’s own summary, as published.
What this changes
Amends 1 part of the Code of Federal Regulations — the standing rules this notice rewrites.
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