♻️California's Hazardous Waste Program Revisions and Business Compliance
The Environmental Protection Agency (EPA) is taking direct final action to authorize changes California has made to its hazardous waste program under the Resource Conservation and Recovery Act, as amended. The Agency has reviewed California's application for authorization of these changes and determined that the changes satisfy all requirements.
Learn More🌫️EPA Proposes Approval of Arizona's PM10 Air Quality Plan
The Environmental Protection Agency (EPA) is proposing to fully approve the Arizona Department of Environmental Quality's (ADEQ or "State") State Implementation Plan (SIP) submittal under the Clean Air Act (CAA or "the Act") that addresses Nonattainment New Source Review (NNSR) permitting of precursor emissions for the 1987 National Ambient Air Quality Standards (NAAQS or "standard") for particulate matter with a diameter of 10 micrometers or less (PM<INF>10</INF>) in the West Pinal PM<INF>10</INF> nonattainment area. We are taking comments on this proposal and plan to follow with a final action.
Learn More🏭Analysis of EPA's Hazardous Waste Management Regulation
The Environmental Protection Agency (EPA or the Agency) is correcting a typographical error in a final rule published in the Federal Register on June 17, 2025. The final rule granted a petition submitted by WRB Refining in Borger, Texas to exclude (or "delist") 7,000 cubic yards of F037 (petroleum refinery sludge) solids to be removed from their stormwater storage tanks for a one-time delisting.
Learn More🌫️Proposed Air Quality Revisions in Maricopa County by EPA
The Environmental Protection Agency (EPA) is proposing an approval of revisions to the Maricopa County Air Quality Department (MCAQD) portion of the Arizona State Implementation Plan (SIP). These revisions concern emissions of particulate matter from incinerators, burn-off ovens, and crematories. We are proposing to approve revisions to a local rule that regulates these emissions 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🌱5-Year Status Reviews for 122 Endangered Species Initiated
We, the U.S. Fish and Wildlife Service, are initiating 5-year status reviews for 122 species in Hawaii, Idaho, Oregon, and Washington under the Endangered Species Act of 1973. A 5-year status review is based on the best scientific and commercial data available at the time of the review; therefore, we are requesting submission of any new information on these species that has become available since the last reviews.
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🌫️EPA Approves California's Regional Haze Plan
The Environmental Protection Agency (EPA) is approving the regional haze state implementation plan (SIP) revision submitted by California on August 9, 2022 (hereinafter the "2022 California Regional Haze Plan" or "the Plan"), under the Clean Air Act (CAA) and the EPA's Regional Haze Rule (RHR) for the program's second implementation period. The Plan 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 Plan also addresses other applicable requirements for the second implementation period of the regional haze program. The EPA is taking this action pursuant to CAA sections 110 and 169A.
Learn More🌫️EPA Proposes Approval of Arkansas Regional Haze SIP for Visibility
Pursuant to the Clean Air Act (CAA or the Act), the Environmental Protection Agency (EPA) is proposing to approve a State Implementation Plan (SIP) revision submitted by the State of Arkansas through the Division of Environmental Quality (DEQ) on August 8, 2022, and clarified by DEQ on July 29, 2025, as satisfying the requirements of the Act and the EPA's Regional Haze Rule (RHR) for visibility protection in mandatory Class I Federal areas (Class I areas) for the program's second implementation period. Arkansas' SIP submission addresses the requirement that states must revise their long-term strategies for making reasonable progress to prevent any future and remedy any existing man-made visibility impairment in the Class I areas. The EPA is taking this action pursuant to sections 110 and 169A of the CAA.
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🌬️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").
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