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EPA narrows “Waters of the United States” definition following Sackett ruling

The Environmental Protection Agency and the Army Corps of Engineers recently announced a revised and final rule amending the definition of Waters of the United States (WOTUS) following the Supreme Court decision in Sackett v....more

New EPA Rule Removes Emergency Defense Waiver in Title V Air Permits

On July 21, 2023, the Environmental Protection Agency published a final rule eliminating an affirmative defense for Clean Air Act permit emissions violations caused by “emergency” circumstances. “Major sources” (i.e....more

Supreme Court Narrows Scope of Clean Water Act in Landmark Sackett Case

The U.S. Supreme Court has issued its opinion in the landmark Clean Water Act (“CWA”) case of Sackett v. EPA, No. 21-454 (May 25, 2023). This decision delivers a significant change in terms of the reach and jurisdiction of...more

In a Choose Your Own Adventure - Approach, EPA Proposes Greenhouse Gas Emissions Standards for New and Existing Power Plants

Today, the US Environmental Protection Agency released its long-awaited proposal for New Source Performance Standards for Greenhouse Gas Emissions from New, Modified, and Reconstructed Fossil Fuel-Fired Electric Generating...more

Client Alert: In a Choose Your Own Adventure-Approach, EPA Proposes Greenhouse Gas Emissions Standards for New and Existing Power...

Today, the US Environmental Protection Agency released its long-awaited proposal for New Source Performance Standards for Greenhouse Gas Emissions from New, Modified, and Reconstructed Fossil Fuel-Fired Electric Generating...more

New WOTUS Rule Halted in Half of Country by Federal District Court

On April 12, 2023, a federal district court judge in North Dakota issued a temporary injunction blocking implementation of the EPA and Army Corps of Engineers regulations redefining Waters of the United States (“WOTUS”) under...more

EPA Finalizes “Good Neighbor Plan” Targeting Ozone-Creating NOx Emissions in 23 States

On March 15, 2023, EPA finalized its Good Neighbor Plan under the Clean Air Act (“CAA”), a rule designed to reduce smog-forming nitrogen oxide ("NOx") pollution from power plants and other industrial facilities in 23 upwind...more

EPA Proposes Significant Change to Particulate Matter Air Quality Standards

On January 6, 2023, EPA announced that is was issuing a proposed rule to lower the National Ambient Air Quality Standards (“NAAQS”) for fine particulate matter (“PM2.5”), also referred to as soot...more

EPA and the Army Corps Finalize WOTUS Rule, Again

On December 30, 2022, the U.S. Environmental Protection Agency (“EPA”) and the U.S. Army Corps of Engineers (“Army Corps”) announced they had finalized the rule establishing the definition of “waters of the United States”...more

Earth Week Series: The Future of Environmental Regulation

As we near Earth Day 2022, the United States may be headed toward a profound change in the way EPA and similar administrative agencies regulate the complex areas of environmental law. EPA began operating more than 50 years...more

EPA Proposes Hazardous Substance Facility Response Plan Regulations; Includes Climate Change and Environmental Justice...

On March 11, 2022, the U.S. Environmental Protection Agency (“EPA”) announced it was proposing new regulations that would require certain facilities located close to navigable waters create and submit Facility Response Plans...more

EPA Plans to Improve Lead and Copper Drinking Water Rule While Facing Legal Challenge from States

EPA faces continuing pressure to improve the way it protects communities from lead in drinking water. One focus of the current EPA has been the Lead and Copper Drinking Water Rule Revisions (“LCRR”), promulgated under the...more

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