⚡Adjusted Emissions Budgets for Indiana Under CSAPR
The Environmental Protection Agency (EPA) is taking interim final action to adjust the Revised Cross-State Air Pollution Rule (CSAPR) Update "budget" for nitrogen oxides (NO<INF>X</INF>) emissions from Indiana electricity generating units (EGUs) during the May-September "ozone season" for 2024 and subsequent years. Relatedly, EPA is also adjusting the default unit-level allocations of emission allowances to Indiana EGUs for 2024 and subsequent years in accordance with the adjustments to the state emissions budget. When originally establishing state emissions budgets and default unit-level allocations for 2024 and subsequent years in the Revised CSAPR Update rulemaking, EPA relied in part on announcements from EGU owners regarding their plans to retire certain EGUs before the 2024 ozone season. The purpose of the adjustments being made in this action is to account for the subsequent decisions by some EGU owners to defer or cancel the previously announced retirement plans.
Learn More🌍Ohio EPA Proposes Ozone NAAQS Maintenance Plan Updates
The Environmental Protection Agency (EPA) is proposing to approve revisions to the Ohio State Implementation Plan (SIP). On November 6, 2024, the Ohio Environmental Protection Agency (Ohio EPA) submitted the state's plans for maintaining the 2008 ozone National Ambient Air Quality Standard (NAAQS or standard) in the Columbus, Ohio; Cleveland-Akron-Lorain, Ohio; and Cincinnati, Ohio-Kentucky-Indiana areas. EPA is proposing to approve these maintenance plans because they provide for the maintenance of the 2008 ozone NAAQS for each area for 10 additional years as required by the Clean Air Act (CAA). EPA is also initiating the adequacy review process for motor vehicle emission budgets (Budgets) for each area. This action, if finalized, would make certain commitments related to maintenance of the 2008 ozone NAAQS in these areas federally enforceable as part of the Ohio SIP.
Learn More🌫️EPA Approves Air Quality Regulation for Mojave Desert Region
The Environmental Protection Agency (EPA) is taking final action to approve a revision to the Mojave Desert Air Quality Management District (MDAQMD) portion of the California State Implementation Plan (SIP). This revision concerns emissions of oxides of nitrogen (NO<INF>X</INF>) from industrial, institutional, and commercial boilers, steam generators, and process heaters. We are approving a local rule that regulates these emission sources under the Clean Air Act (CAA or "Act").
Learn More🌍Ohio EPA Nitrogen Oxide Budget Program Regulation Approved
The Environmental Protection Agency (EPA) is approving revisions to the Ohio State Implementation Plan (SIP) submitted by the Ohio Environmental Protection Agency (Ohio EPA) on November 4, 2024. The SIP revisions consist of revised Ohio Administrative Code (OAC) rules implementing the Nitrogen Oxide (NO<INF>X</INF>) Budget Program. The revised rules include non-substantive updates to rule language and updates to referenced material.
Learn More🌬️New York EPA Emission Statement Certification and Compliance
The Environmental Protection Agency (EPA) is proposing to approve portions of the comprehensive State Implementation Plan (SIP) revisions submitted by New York that certify that the State has satisfied the requirements for an emission statement program for both the Serious and Moderate classifications of the 2008 and 2015 ozone National Ambient Air Quality Standards (NAAQS), respectively. These actions are being taken in accordance with the requirements of the Clean Air Act (CAA or Act).
Learn More🌫️Tehama County Air Quality Permit Regulations Impact on Businesses
The Environmental Protection Agency (EPA) is taking final action to approve a revision to the Tehama County Air Pollution Control District's (TCAPCD or "District") portion of the California State Implementation Plan (SIP). This revision governs the District's issuance of permits for stationary sources and focuses on the preconstruction review and permitting of major sources and major modifications under part D of title I of the Clean Air Act (CAA or "the Act").
Learn More🌿Proposed NOX Emission Limits for Keetac Taconite Facility
The Environmental Protection Agency (EPA) is proposing to modify nitrogen oxide (NO<INF>X</INF>) emission limits for the indurating furnace at United States Steel's (U.S. Steel's) Keetac taconite facility in Keewatin, Minnesota (Keetac), to satisfy the requirement for best available retrofit technology (BART) at taconite facilities. EPA is proposing this action pursuant to sections 110 and 169A of the Clean Air Act (CAA).
Learn More🌬️EPA Updates Wisconsin Air Quality Regulations
The Environmental Protection Agency (EPA) is revising the format for materials that are made part of the Wisconsin State Implementation Plan (SIP) through the process of incorporation by reference (IBR). The regulations and materials affected by this format change have all been previously submitted by Wisconsin and approved by EPA as part of the SIP.
Learn More🌬️Indiana EPA Proposes Revisions for NOx Emissions Monitoring
The Environmental Protection Agency (EPA) is proposing to approve under the Clean Air Act (CAA) a request from the Indiana Department of Environmental Management (IDEM) to revise the Indiana State Implementation Plan (SIP) to incorporate revisions to nitrogen oxides (NO<INF>X</INF>) emissions monitoring, reporting and record keeping requirements for new and existing large non-Electric Generating Units (non-EGUs) affected by the NO<INF>X</INF> SIP Call. This SIP revision would approve monitoring, reporting, and record keeping requirements that are permissible as alternatives under Federal rules for these sources for purposes of the NO<INF>X</INF> SIP Call.
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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