🌬️EPA Approves West Virginia's Title V Operating Permits Program Revision
The Environmental Protection Agency (EPA) is approving a Title V Operating Permits Program revision submitted by the West Virginia Department of Environmental Protection (WVDEP) on behalf of the State of West Virginia. The revision incorporated by reference final rules promulgated by the EPA, effective June 1, 2020, into West Virginia's Title V Operating Permits Program. The EPA is approving these revisions to the West Virginia Title V Operating Permits Program in accordance with the requirements of the Clean Air Act (CAA). The approval will serve to maintain consistency between the State and Federal counterpart regulations.
Learn More🌍Extension of Coachella Valley Ozone Attainment Date to 2025
The Environmental Protection Agency (EPA) is finalizing a one- year extension of the "Extreme" attainment date from June 15, 2024 to June 15, 2025, for the 1997 ozone national ambient air quality standards (NAAQS) to the Riverside County (Coachella Valley), California ozone nonattainment area ("Coachella Valley"). The EPA is also taking final action on the exceptional event request submitted by the California Air Resources Board (CARB) on October 11, 2024. This action is based on the EPA's concurrence on the exceptional events demonstration, which removed from the design value (DV) calculation the wildfire-influenced data recorded at the Palm Springs--Fire Station monitor (AQS Site ID #060655001) on July 14-15, 2023, and the extension request submitted by the State of California.
Learn More🌬️EPA Delegation Update
On January 21, 2025, the Environmental Protection Agency (EPA) sent the State of West Virginia (West Virginia) a letter acknowledging that West Virginia's delegation of authority to implement and enforce the National Emissions Standards for Hazardous Air Pollutants (NESHAP) and New Source Performance Standards (NSPS) had been updated, as provided for under previously approved delegation mechanisms. To inform regulated facilities and the public, EPA is making available a copy of EPA's letter to West Virginia through this notice.
Learn More🌫️Proposed Revisions to Clean Air Act Permit Program in San Diego
The Environmental Protection Agency (EPA) is proposing approval of revisions to the Clean Air Act (CAA or "Act") Operating Permit Program (title V) of the San Diego County Air Pollution Control District (SDCAPCD or "District") in California. Once approved, these revisions will update the District's public noticing requirements to conform to current federal requirements for title V programs. We are taking comments on these proposed revisions and are simultaneously publishing our final action approving these revisions in a direct final rule.
Learn More🌬️Kentucky SO2 Nonattainment Regulations and Business Compliance
The Environmental Protection Agency (EPA) is proposing to approve two State Implementation Plan (SIP) revisions submitted by the Commonwealth of Kentucky, through the Energy and Environment Cabinet (Cabinet), Division of Air Quality (DAQ) on January 26, 2024, and February 15, 2024, to certify two requirements under the Clean Air Act (CAA or Act). These revisions establish that the Kentucky SIP satisfies the nonattainment new source review (NNSR) and base year emissions inventory requirements for the 2010 1-hour sulfur dioxide (SO<INF>2</INF>) national ambient air quality standard (NAAQS) for the Henderson-Webster SO<INF>2</INF> nonattainment area (hereinafter "Henderson-Webster SO<INF>2</INF> Nonattainment Area" or "Area"). These actions are being proposed pursuant to the CAA.
Learn More🌍Business Implications of California's Carbon Monoxide SIP Revision
The Environmental Protection Agency (EPA) is taking final action to approve a revision to the California state implementation plan (SIP) that removes carbon monoxide (CO) contingency measures and monitoring requirements from the maintenance plan for three CO maintenance areas: Chico Urbanized Area, Modesto Urbanized Area, and Stockton Urbanized Area. We are approving the revision under the Clean Air Act (CAA or "Act").
Learn More🌬️Clean Air Act Operating Permit Program Revisions in California
With this direct final rule, the Environmental Protection Agency (EPA) is promulgating approval of revisions to the Clean Air Act Operating Permit Program (title V) of the San Diego County Air Pollution Control District (SDCAPCD or "District") in California. The EPA is taking this final action in accordance with federal regulations and the Clean Air Act (CAA or "Act").
Learn More🌫️Proposed South Carolina Ozone Maintenance Plan Compliance Rule
On September 26, 2023, the State of South Carolina, through the South Carolina Department of Environmental Services (SCDES, formerly the "South Carolina Department of Health and Environmental Control"), submitted a request for the Environmental Protection Agency (EPA) to approve a State Implementation Plan (SIP) revision containing the State's plan for maintaining the 2008 ozone National Ambient Air Quality Standard (NAAQS or standard) through 2036 for the South Carolina portion of the bi-state Charlotte-Rock Hill, North Carolina- South Carolina 2008 8-hour ozone nonattainment area (the entire area is hereinafter referred to as the "bi-State Charlotte Area" and the South Carolina portion is hereinafter referred to as the "York County Area"). EPA is proposing to approve and incorporate this maintenance plan, including the 2018 and 2036 motor vehicle emission budgets (budgets) for nitrogen oxides (NOx) and volatile organic compounds (VOC) for the York County Area, into the SIP. EPA is also notifying the public of the status of EPA's adequacy determination for the budgets for the York County Area.
Learn More🌫️EPA Approves Michigan's Regional Haze Plan - Business Implications
The Environmental Protection Agency (EPA) is approving the Regional Haze State Implementation Plan (SIP) revision submitted by the Michigan Department of Environment, Great Lakes, and Energy (EGLE) on August 23, 2021, and supplemented on July 24, 2025, as satisfying applicable requirements under the Clean Air Act (CAA) and EPA's Regional Haze Rule (RHR) for the program's second implementation period. EGLE's SIP submission addresses the requirement that States must periodically revise their long-term strategies for making reasonable progress towards the national goal of preventing any future, and remedying any existing, anthropogenic impairment of visibility, including regional haze, in mandatory Class I Federal areas. The SIP submission also addresses other applicable requirements for the second implementation period of the regional haze program. EPA is taking this action pursuant to sections 110 and 169A of the CAA.
Learn More🌬️EPA's Proposed Nitrogen Oxide Regulation for Texas Businesses
The Environmental Protection Agency (EPA) is supplementing a proposed rule published on March 10, 2021, to approve revisions to the Texas State Implementation Plan (SIP) concerning Nitrogen Oxide (NO<INF>X</INF>) Reasonably Available Control Technology (RACT) requirements for the Serious Houston-Galveston-Brazoria (HGB), 2008 8- hour ozone National Ambient Air Quality Standard (NAAQS) nonattainment area. Because of comments received on the March 10, 2021, proposal, we are providing additional analysis, in this proposal, regarding RACT requirements which apply to sources of NO<INF>X</INF> in this area. Consistent with this analysis, EPA is proposing to determine that Texas' rules meet NO<INF>X</INF> RACT requirements for the 2008 standard under the Serious classification. The volatile organic compounds (VOC) portion of the RACT analysis in the Serious area Attainment Demonstration submittal is addressed in a separate action. The EPA is providing an opportunity for public comment on this supplemental proposal. Comments received on the March 10, 2021, proposal and this supplemental proposal will be addressed in a final rule.
Learn More