Nitrogen oxides

Air Plan Disapproval; California; Antelope Valley Air Quality Management District and Mojave Desert Air Quality Management District

The Environmental Protection Agency (EPA) is proposing to disapprove revisions to the Antelope Valley Air Quality Management District (AVAQMD) and the Mojave Desert Air Quality Management District (MDAQMD) portions of the California State Implementation Plan (SIP) concerning rules submitted to address section 185 of the Clean Air Act (CAA or the Act) with respect to the 1-hour ozone standard. We are proposing action on these local rules that were submitted as equivalent alternatives to a statutory section 185 program.

Publication Date: 
Friday, June 17, 2022 - 4:00am

Air Plan Approval; Kentucky; Source Specific Changes for Jefferson County

The Environmental Protection Agency (EPA) is approving changes to the Kentucky State Implementation Plan (SIP), submitted by the Commonwealth of Kentucky, through the Energy and Environment Cabinet (Cabinet), on March 4, 2020, and supplemented on January 28, 2022.

Publication Date: 
Tuesday, June 7, 2022 - 4:00am

Federal Implementation Plan Addressing Reasonably Available Control Technology Requirements for Certain Sources in Pennsylvania

The Environmental Protection Agency (EPA) is proposing a Federal implementation plan (FIP) for the Commonwealth of Pennsylvania (Pennsylvania or the Commonwealth). This FIP proposes to set emission limits for nitrogen oxides (NO<INF>X</INF>) emitted from coal-fired electric generating units (EGUs) equipped with selective catalytic reduction (SCR) in order to meet the reasonably available control technology (RACT) requirements for the 1997 and 2008 ozone national ambient air quality standards (NAAQS).

Publication Date: 
Wednesday, May 25, 2022 - 4:00am

Air Plan Approval; NC; Great Smoky Mountains National Park, Raleigh-Durham-Chapel Hill and Rocky Mount Areas Limited Maintenance Plans for the 1997 8-Hour Ozone NAAQS

The Environmental Protection Agency (EPA) is taking final action to approve state implementation plan (SIP) revisions submitted by the State of North Carolina, through the North Carolina Department of Environment and Natural Resources, Division of Air Quality (NCDAQ), in a letter dated September 22, 2020. The SIP revisions include the 1997 8-hour ozone national ambient air quality standards (NAAQS) Limited Maintenance Plans (LMPs) for the Great Smoky Mountains National Park (GSMNP), Raleigh-Durham-Chapel Hill (Triangle) and Rocky Mount, North Carolina Areas (collectively, ``Areas'').

Publication Date: 
Monday, May 9, 2022 - 4:00am

Determinations of Attainment by the Attainment Date, Extension of the Attainment Date, and Reclassification of Areas Classified as Serious for the 2008 Ozone National Ambient Air Quality Standards

The Environmental Protection Agency (EPA) proposes three actions pursuant to section 181(b)(2) of the Clean Air Act (CAA) related to seven areas classified as ``Serious'' for the 2008 ozone National Ambient Air Quality Standards (NAAQS). First, the Agency proposes to determine that one area attained the 2008 ozone NAAQS by the July 20, 2021, attainment date.

Publication Date: 
Wednesday, April 13, 2022 - 4:00am

Determinations of Attainment by the Attainment Date, Extensions of the Attainment Date, and Reclassification of Areas Classified as Marginal for the 2015 Ozone National Ambient Air Quality Standards

The Environmental Protection Agency (EPA or Agency) is proposing three actions pursuant to section 181(b)(2) of the Clean Air Act (CAA) related to the attainment date for 31 areas classified as ``Marginal'' nonattainment for the 2015 ozone National Ambient Air Quality Standards (NAAQS). First, the Agency is proposing to determine that six areas attained the standard by the applicable August 3, 2021, attainment date. Second, the Agency is proposing to grant a 1-year attainment date extension for the Uinta Basin, Utah, nonattainment area.

Publication Date: 
Wednesday, April 13, 2022 - 4:00am

Air Plan Approval; Alabama; Birmingham Limited Maintenance Plan for the 1997 8-Hour Ozone NAAQS

The Environmental Protection Agency (EPA) is approving a state implementation plan (SIP) revision submitted by the State of Alabama, through the Alabama Department of Environmental Management (ADEM), via a letter dated September 15, 2020. The SIP revision includes the 1997 8-hour ozone national ambient air quality standards (NAAQS) Limited Maintenance Plan (LMP) for the Birmingham, Alabama Area (hereinafter referred to as the ``Birmingham Area'' or ``Area''). The Birmingham Area is comprised of Jefferson and Shelby Counties.

Publication Date: 
Wednesday, April 6, 2022 - 4:00am

Air Plan Approval; Kentucky; 2015 8-Hour Ozone Nonattainment New Source Review Permit Program Requirements

The Environmental Protection Agency (EPA) is approving a revision to the Kentucky State Implementation Plan (SIP) submitted by the Commonwealth of Kentucky, through the Kentucky Energy and Environment Cabinet, on October 15, 2020.

Publication Date: 
Tuesday, April 5, 2022 - 4:00am

Air Plan Approval; Georgia; 2015 8-Hour Ozone Nonattainment New Source Review Permit Program Requirements

The Environmental Protection Agency (EPA) is approving a revision to the Georgia State Implementation Plan (SIP) submitted by the State of Georgia through the Georgia Environmental Protection Division (GA EPD) on July 2, 2020. EPA is approving Georgia's certification that its existing Nonattainment New Source Review (NNSR) permitting regulations meet the nonattainment planning requirements for the 2015 8-hour ozone National Ambient Air Quality Standards (NAAQS) for the Atlanta Area, comprised of the counties of Bartow, Clayton, Cobb, DeKalb, Fulton, Gwinnett, and Henry.

Publication Date: 
Tuesday, January 25, 2022 - 4:00am

Air Plan Approval; Delaware; Philadelphia Area 2017 Base Year Inventory for the Ozone National Ambient Air Quality Standard

The Environmental Protection Agency (EPA) is proposing to approve a state implementation plan (SIP) revision formally submitted by the State of Delaware. This revision consists of the base year inventory for the Delaware portion of the Philadelphia-Wilmington- Atlantic City, PA-NJ-MD-DE marginal nonattainment area (Philadelphia Area) for the 2015 ozone national ambient air quality standards (NAAQS). This action is being taken under the Clean Air Act (CAA).

Publication Date: 
Friday, January 21, 2022 - 4:00am

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