News & Analysis as of

Air Pollution Comment Period Regulatory Reform

Jones Day

EPA Proposes Repeal of 2024 Mercury and Air Toxics Standards Amendments

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On June 11, 2025, the U.S. Environmental Protection Agency ("EPA") announced a proposed rule to repeal key amendments to the 2024 Mercury and Air Toxics Standards ("MATS") for coal- and oil-fired electric utility steam...more

Robinson+Cole Environmental Law +

Back From the Grave? “Once In, Always In” for Hazardous Air Pollutant Emissions

In the Byzantine complexity of the Clean Air Act (CAA), EPA’s “once in, always in” policy regarding hazardous air pollutants (HAP) has been particularly confounding.  And now it’s back in play, through regulatory revisions...more

Jones Day

EPA Proposes Methane Emission Regulation for Existing Oil and Gas Production

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After years of attempts with varying success to regulate methane emissions from new oil and gas wells, the Biden administration has shifted strategy in proposing a regulatory program covering both new and existing oil and...more

Jones Day

California Air Resources Board Preparing Scoping Plan for Carbon Neutral Future

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The California Air Resources Board ("CARB") is conducting public workshops during the fall of 2021 as part of its planning for the next Climate Change Scoping Plan, which will lay out strategies for achieving California's...more

Bricker Graydon LLP

U.S. EPA proposes to retain current particulate matter standards

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On April 14, 2020, U.S. EPA proposed to retain the current national ambient air quality standards (NAAQS) for particulate matter (PM) without revision. ...more

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