🌫️Proposed Approval of West Virginia's Regional Haze SIP
The Environmental Protection Agency (EPA) is proposing to approve the regional haze State implementation plan (SIP) revision submitted by West Virginia (West Virginia, WV, or the State) on August 12, 2022, to address applicable requirements under the Clean Air Act (CAA) and the EPA's Regional Haze Rule (RHR) for the regional haze program's second implementation period. The EPA is proposing this action pursuant to the CAA. The EPA is also withdrawing its previous proposed rule to disapprove West Virginia's regional haze SIP revision as published in the Federal Register on January 21, 2025.
Learn More🌬️Spokane Air Quality Regulation Updates and Business Implications
The Environmental Protection Agency (EPA) is approving revisions to the Washington State Implementation Plan (SIP) that were submitted by the Department of Ecology (Ecology) in coordination with the Spokane Regional Clean Air Agency (SRCAA). In 2021, the EPA approved a comprehensive update to the SRCAA general air quality regulations in the SIP, which include new source review permitting requirements as well as other general requirements for sources regulated under SRCAA's jurisdiction. In this action, the EPA is approving additional updates to the SRCAA general air quality regulations promulgated since our comprehensive approval in 2021.
Learn More🌫️Louisiana's Air Quality Regulation Proposal by EPA on SO₂ Transport
Pursuant to the Federal Clean Air Act (CAA or the Act), the Environmental Protection Agency (EPA) is proposing to approve the portion of the State Implementation Plan (SIP) submittal from the State of Louisiana demonstrating that the State satisfies the interstate transport requirements of section 110(a)(2)(D)(i)(I), also known as the "good neighbor" provision of the CAA, for the 2010 1-hour sulfur dioxide (SO<INF>2</INF>) primary National Ambient Air Quality Standard (NAAQS). The good neighbor provision requires each State's implementation plan contain adequate provisions prohibiting the interstate transport of air pollution in amounts that will contribute significantly to nonattainment, or interfere with maintenance, of a NAAQS in any other State.
Learn More🚗Texas EPA Approves Vehicle Inspection and Maintenance Program
Pursuant to the Federal Clean Air Act (CAA or the Act), the Environmental Protection Agency (EPA) is approving revisions to the Texas State Implementation Plan (SIP) submitted to the EPA by the Texas Commission on Environmental Quality (TCEQ or State) on December 18, 2023. The SIP revisions address Control of Air Pollution from Motor Vehicles and establish a Motor Vehicle Inspection and Maintenance (I/M) program for the San Antonio ozone nonattainment area. The revisions also update definitions and address options for displaying a vehicle's registration as proof of compliance with I/M requirements. Additionally, this final action terminates the EPA's requirement to promulgate a Federal Implementation Plan (FIP) for a Basic I/M program in the San Antonio nonattainment area.
Learn More🌫️EPA Designates New Methods for Monitoring Air Quality
Notice is hereby given that the Environmental Protection Agency (EPA) has designated one new equivalent method for measuring concentrations of PM<INF>2.5</INF> and one new equivalent method for measuring PM<INF>10-2.5</INF> in ambient air.
Learn More🌍Proposed Air Quality Standards for Liberty-Clairton Area by EPA
The Environmental Protection Agency (EPA) is proposing to approve a request from the Commonwealth of Pennsylvania to redesignate the Liberty-Clairton, Pennsylvania nonattainment area (Liberty-Clairton Area) to attainment for the 1997 annual and 2006 24-hour fine particulate matter (PM<INF>2.5</INF>) national ambient air quality standards (NAAQS or standard). The EPA is also proposing to approve, as revisions to the Pennsylvania state implementation plan (SIP), the Commonwealth's plan for maintaining the 1997 annual and 2006 24-hour PM<INF>2.5</INF> NAAQS through 2035 for the Liberty-Clairton Area. Additionally, the EPA is proposing to approve the maintenance plan for the Allegheny County, Pennsylvania nonattainment area (Allegheny County Area) for the 2012 annual PM<INF>2.5</INF> NAAQS through 2035. The maintenance plan includes 2017, 2026, and 2035 mobile vehicle emissions budgets (MVEBs) for mobile sources of PM<INF>2.5</INF> and nitrogen oxides (NO<INF>X</INF>) for the Allegheny County Area. The EPA is proposing to find these 2017, 2026, and 2035 MVEBs for PM<INF>2.5</INF> and NO<INF>X</INF> adequate and to approve these MVEBs into the Pennsylvania SIP for transportation conformity purposes. This action does not redesignate the Allegheny County Area to attainment for the 2012 annual PM<INF>2.5</INF> NAAQS, as Pennsylvania withdrew its redesignation request specific to the Allegheny County Area. The redesignation request and maintenance plan were submitted by the Commonwealth of Pennsylvania Department of Environmental Protection (PADEP or Pennsylvania) on behalf of the Allegheny County Health Department (ACHD). This action is being taken under the CAA.
Learn More🌍EPA Proposes Approval for Connecticut's Air Quality Standards
The Environmental Protection Agency (EPA) is proposing approval of State Implementation Plan (SIP) revisions submitted by the State of Connecticut that relate to the 2015 Ozone National Ambient Air Quality Standards (NAAQS). The SIP revisions are for the Greater Connecticut and the Connecticut portion of the New York-Northern New Jersey-Long Island, NY-NJ-CT ozone nonattainment areas. The intended effect of this action is to propose approval of submittals which include a 2017 base year emissions inventory for the 2015 Ozone National Ambient Air Quality Standard. This action is being taken under the Clean Air Act.
Learn More🌫️EPA Finalizes Air Quality Standards for Washington Area
The Environmental Protection Agency (EPA) is finalizing multiple actions related to the Washington, DC-MD-VA nonattainment area (the Washington Area or the Area) for the 2015 8-hour ozone national ambient air quality standards (2015 ozone NAAQS). First, the EPA is determining that the Washington Area attained the 2015 ozone NAAQS by the applicable attainment date of August 3, 2024. Second, the EPA is determining that the Washington Area has clean data under the EPA's Clean Data Policy. Lastly, the EPA is taking final action on an exceptional events request submitted by the District of Columbia (DC) on March 20, 2024, and concurred on by the EPA on July 17, 2024. This action addresses the EPA's obligation under Clean Air Act (CAA) sections 179(c) and 181(b)(2) to determine whether the Washington Area attained the 2015 ozone NAAQS by the August 3, 2024 attainment date and, as set forth in the EPA's Clean Data Policy, will suspend the obligation of DC, the State of Maryland (MD), and the Commonwealth of Virginia (VA) to submit certain attainment planning requirements for as long as the Washington Area continues to attain the 2015 ozone NAAQS. This action is being taken under the CAA.
Learn More🏭EPA Approves Air Quality Plan for Lehigh Cement in New York
The Environmental Protection Agency (EPA) is approving a revision to the State of New York's State Implementation Plan (SIP) for the ozone National Ambient Air Quality Standard (NAAQS) related to a Source-specific SIP (SSSIP) revision for Lehigh Cement Company LLC, located at 313 Warren Street, Glens Falls, New York (the Facility). The control options in this SSSIP revision implement Reasonably Available Control Technology (RACT) with respect to nitrogen oxide (NO<INF>X</INF>) emissions from the relevant Facility source, which is identified as one Portland cement kiln (the Kiln). This action is being taken in accordance with the requirements of the Clean Air Act (CAA) for implementation of the 2008 and 2015 ozone NAAQS. The EPA proposed to approve this rule on December 26, 2024, and received no comments. This final action will not interfere with ozone NAAQS requirements and meets all applicable requirements of the CAA.
Learn More🌿EPA Defers Sanctions for Placer County Air Regulations
The Environmental Protection Agency (EPA) is making an interim final determination that the California Air Resources Board (CARB) has submitted a Clean Air Act (CAA or "Act") State implementation plan (SIP) revision on behalf of the Placer County Air Pollution Control District (PCAPCD or "District") that corrects deficiencies concerning the District's nonattainment new source review stationary source permitting program. This determination is based on a proposed approval, published elsewhere in this issue of the Federal Register, of PCAPCD Rule 502, "New Source Review." The effect of this interim final determination is to defer sanctions that were triggered by the EPA's previous limited disapproval of PCAPCD Rule 502 in 2023.
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