🌬️New EPA Delegation of NSPS and NESHAP to Louisiana
The Louisiana Department of Environmental Quality (LDEQ) has submitted updated regulations for receiving delegation and approval of its program for the implementation and enforcement of certain New Source Performance Standards (NSPS) and National Emission Standards for Hazardous Air Pollutants (NESHAP) for all sources, as provided for under previously approved delegation mechanisms. The updated State regulations incorporate by reference certain NSPS and NESHAP promulgated by the Environmental Protection Agency (EPA), as they existed through July 1, 2021. EPA is providing notice that it is updating the delegation of certain NSPS to LDEQ and proposing to approve the delegation of certain NESHAP to LDEQ. The proposed delegation of authority under this action does not apply to sources located in Indian country.
Learn More🌍Implications of New Air Quality Regulations for San Joaquin Valley
The Environmental Protection Agency (EPA) is proposing to approve the "2023 Maintenance Plan and Redesignation Request for the Revoked 1-Hour Ozone Standard" ("San Joaquin Valley Maintenance Plan" or "Plan") as a revision to the state implementation plan (SIP) for the State of California. The San Joaquin Valley Maintenance Plan includes, among other elements, an emissions inventory consistent with attainment and contingency provisions. The EPA is also proposing to find that the State of California's request to redesignate the San Joaquin Valley area from nonattainment to attainment for the revoked 1979 1-hour national ambient air quality standard (NAAQS or "standard") for ozone ("1979 ozone NAAQS," "1-hour ozone NAAQS," or "1-hour ozone standard") meets all the Clean Air Act (CAA or "the Act") criteria for redesignation. Therefore, the EPA is proposing to terminate all anti-backsliding obligations for the San Joaquin Valley area for the revoked 1-hour ozone NAAQS.
Learn More🌍New York Air Plan Approval for Fuel Composition and Use Regulations
The Environmental Protection Agency (EPA) is approving revisions to the New York State Implementation Plan (SIP) concerning the control and reduction of sulfur and particulate matter emissions from facilities in New York State. The SIP revisions consist of amendments to regulations outlined within New York's Codes, Rules and Regulations (NYCRR) for sulfur in fuel limits and the use of waste oil as fuel. The intended effect of the revisions is to approve control strategies, required by the Clean Air Act (CAA), which will result in emission reductions that will help attain and maintain National Ambient Air Quality Standards (NAAQS) for sulfur dioxide and fine particulate matter emissions throughout New York State. Additionally, the revisions will establish applicability criteria, composition limits, and permitting requirements for waste oils; provide monitoring, recordkeeping, and reporting requirements for facilities that are determined eligible to burn waste oil; update conditions required for the firing of waste oils in space heaters at automotive maintenance/service facilities to align with both Federal and New York State hazardous waste regulations; and simplify and streamline implementation of the regulation through the correction of typographical errors and elimination of obsolete regulatory references within provisions. This action is being taken in accordance with the requirements of the CAA.
Learn More🌍EPA Delegates NESHAP Authority to Oklahoma for Air Quality Management
The Oklahoma Department of Environmental Quality (ODEQ) has submitted updated regulations for receiving delegation and approval of its program for the implementation and enforcement of certain National Emission Standards for Hazardous Air Pollutants (NESHAP) for all sources, as provided for under previously approved delegation mechanisms. The updated State regulations incorporate by reference certain NESHAP promulgated by the Environmental Protection Agency (EPA), as they existed through June 30, 2022. The EPA is providing notice that it is taking final action to approve the delegation of certain NESHAP to ODEQ. The final delegation of authority under this action applies to sources located in certain areas of Indian country as discussed herein.
Learn More🌱EPA Defers Sanctions for California Air Quality Compliance
The Environmental Protection Agency (EPA) is making an interim final determination that the California Air Resources Board (CARB) has submitted a rule on behalf of the Eastern Kern Air Pollution Control District (EKAPCD or "District") that addresses deficiencies in its Clean Air Act (CAA or "Act") State Implementation Plan (SIP) concerning emissions of oxides of nitrogen (NO<INF>X</INF>) from stationary gas turbines. This determination is based on a proposed approval, published elsewhere in this issue of the Federal Register, of EKAPCD Rule 425 that regulates this category of sources. The effect of this interim final determination is that the application of offset sanctions that was triggered by a previous limited disapproval by the EPA in 2023 is now stayed, and the application of highway sanctions is now deferred. If the EPA finalizes its approval of EKAPCD's submission, relief from these sanctions will become permanent.
Learn More🌬️Proposed EPA Rule for Eastern Kern Air Quality
The Environmental Protection Agency (EPA) is proposing to approve a revision to the Eastern Kern Air Pollution Control District (EKAPCD or "District") portion of the California State Implementation Plan (SIP). This revision concerns emissions of oxides of nitrogen (NO<INF>X</INF>) from stationary gas turbines. We are proposing to approve a local rule to regulate these emission sources under the Clean Air Act (CAA or "Act"). We are taking comments on this proposal and plan to follow with a final action.
Learn More🌫️Air Plan Approval in Texas and Oklahoma
The Environmental Protection Agency (EPA) is extending the comment period for the proposed rule "Air Plan Approval; Texas and Oklahoma; Texas Regional Haze Plans for the First and Second Implementation Periods and Five-Year Progress Report; Oklahoma Regional Haze Plan for the First Implementation Period" that was published on May 23, 2025. The proposal provided for a public comment period ending June 23, 2025. The EPA is extending the comment period to July 23, 2025.
Learn More🌫️Missouri's St. Louis Area Reclassified as Serious Ozone Nonattainment
The Environmental Protection Agency (EPA) is accepting comment on a determination that the Missouri portion of the St. Louis, MO-IL bi-state nonattainment area failed to attain the 2015 8-hour ozone National Ambient Air Quality Standards (NAAQS) by the applicable attainment date. The effect of failing to attain by the applicable attainment date is that the area is reclassified by operation of law to "Serious" nonattainment for the 2015 ozone NAAQS. On November 25, 2024, the EPA published a final action in the Federal Register which determined that the St. Louis area failed to attain the 2015 ozone NAAQS by the Moderate area attainment date. That action also reclassified the area to Serious by operation of law with an effective date of December 31, 2024. On January 24, 2025, the EPA received a petition for reconsideration of that final action from the State of Missouri. On March 5, 2025, EPA Region 7 granted the petition for reconsideration and stated our intention to undergo a notice and comment rulemaking. Therefore, the EPA is accepting comment on the determination that the St. Louis area failed to attain by the attainment date. The Illinois portion of the St. Louis, MO-IL bi-state area is addressed separately.
Learn More🌍Proposed Clean Data Determination for Guam's Piti-Cabras Area
The Environmental Protection Agency (EPA) is proposing a clean data determination (CDD) for the Piti-Cabras, Guam sulfur dioxide (SO<INF>2</INF>) nonattainment area ("Piti-Cabras area") based on our determination that the area has attained the 2010 1-hour SO<INF>2</INF> National Ambient Air Quality Standard (NAAQS, "standard," or "2010 SO<INF>2</INF> NAAQS"). In designated nonattainment areas where air quality data demonstrate that a NAAQS has been attained, the EPA interprets certain requirements of the Clean Air Act (CAA) as no longer applicable for so long as air quality continues to meet the standard. Under this Clean Data Policy, the EPA may issue a determination of attainment, known as a CDD, that a nonattainment area is attaining the relevant NAAQS. If finalized, this proposed CDD would suspend the obligation to submit certain attainment planning requirements for the Piti-Cabras area for as long as the area continues to attain the 2010 SO<INF>2</INF> NAAQS or until the area is formally redesignated.
Learn More📄EPA Notice on Transfer of Confidential Business Information
This document announces that certain information submitted to the Office of Pesticide Program in the Environmental Protection Agency (EPA or Agency) under the Federal Insecticide, Fungicide, and Rodenticide Act (FIFRA) and the Federal Food, Drug, and Cosmetic Act (FFDCA), including information that may have been claimed as confidential business information (CBI) by the submitter, will be transferred to Agile Decision Science, LLC, Savan Group LLC and Maines in accordance with the CBI regulations. These entities have been awarded multiple contracts to perform work for OPP, and access to this information will enable these entities to fulfill the obligations of the contract.
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