🌍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🌬️Colorado Air Quality Plan Approval for Ozone Standards
The Environmental Protection Agency (EPA) is proposing to approve state implementation plan (SIP) submittals under the Clean Air Act (CAA) that address contingency measures requirements for the 2008 ozone National Ambient Air Quality Standards (NAAQS) for the Denver Metro/North Front Range (DMNFR) ozone nonattainment area. The requirements at issue relate to the area's previous Serious nonattainment classification. The EPA is proposing to find that the State has met the applicable CAA requirements for Serious area contingency measures and is proposing approval of the contingency measures SIP submittals, except that we are not taking action on one of the two identified contingency measures included in the submittals. In addition, the EPA is proposing to approve regulatory revisions that Colorado adopted to implement the submitted motor vehicle coating contingency measure. The EPA is taking this action pursuant to the CAA.
Learn More🌬️EPA Proposes to Remove Obsolete NOx Emission Rules in Missouri
The Environmental Protection Agency (EPA) is proposing approval of a State Implementation Plan (SIP) revision submitted by the Missouri Department of Natural Resources (MoDNR) on November 14, 2018. MoDNR requests that the EPA remove from its SIP two rules related to control of emissions of nitrogen oxides (NO<INF>X</INF>). One of the rules previously applied to electricity generating units (EGUs) and certain non-EGUs in a portion of the state and the other rule previously applied to EGUs throughout the entire state. The EPA has already approved a SIP revision that included provisions to sunset the two rules, and removal of the now-sunsetted rules from the SIP would not have an adverse effect on air quality. The EPA's proposed approval of this rule revision is being done in accordance with the requirements of the Clean Air Act (CAA).
Learn More🌬️EPA Approves Kansas Air Plan; Emission Inventory and Fees Revised
The Environmental Protection Agency (EPA) is taking final action to approve revisions to the State Implementation Plan (SIP) and Operating Permits Program and the 112(l) plan submitted by the State of Kansas on February 20, 2023. The revised Kansas rules update the Class I emission fee and emissions inventory regulations, establish a Class II fee schedule and ensure that Kansas's Operating Permits Program is adequately funded. Approval of these revisions ensures consistency between the State and federally-approved rules and does not impact air quality.
Learn More🌍Allegheny County Redesignation for Sulfur Dioxide Standards Approved
The Environmental Protection Agency (EPA) is approving both a redesignation request and state implementation plan (SIP) revision submitted on November 14, 2023 by the Commonwealth of Pennsylvania on behalf of the Allegheny County Health Department (ACHD). The request asked the EPA to redesignate the Allegheny County, Pennsylvania area from nonattainment to attainment for the 2010 1-hour primary sulfur dioxide (SO<INF>2</INF>) national ambient air quality standard (NAAQS), while the revision included Allegheny County's maintenance plan for the 2010 1-hour primary SO<INF>2</INF> standard for the Allegheny County Area. The EPA is approving this redesignation of the Allegheny County Area from nonattainment to attainment for the 2010 SO<INF>2</INF> NAAQS and the revision to the Pennsylvania SIP in accordance with the requirements of the Clean Air Act (CAA).
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 Approves Connecticut's SIP Revisions for Ozone Standards
The Environmental Protection Agency (EPA) is approving State Implementation Plan (SIP) revisions submitted by the State of Connecticut for the 2015 ozone National Ambient Air Quality Standard (NAAQS). These revisions certify the adequacy of the SIP to satisfy the nonattainment new source review permitting requirements of the Clean Air Act (CAA) for the reclassification of the Greater Connecticut area to moderate nonattainment for the 2015 ozone NAAQS, and certify the emission statement program satisfies CAA requirements for the initial nonattainment designations and the reclassification to moderate nonattainment for the 2015 ozone NAAQS. This action is being taken in accordance with the 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🌫️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.
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