United States: Clean Air / Pollution

On April 23, 2026, the U.S. Environmental Protection Agency (EPA) announced its 2026 Interim Guidance on the Destruction and Disposal of PFAS (Interim Guidance)...

March 15, 2026 marked the start of a new five-year cycle for the U.S. Army Corps of Engineers’ Nationwide Permits (NWPs). Pursuant to a final rule published on January 8, 2026, the Corps has reissued and modified 56 existing NWPs and created one new NWP.

On April 8, 2026, Judge Richard M. Platkin of the New York State Supreme Court, Albany County, entirely annulled the New York State Department of Environmental Conservation’s revised Part 664 freshwater wetlands regulations for noncompliance with the State Environmental Quality Review Act.

On March 2, 2026, the Massachusetts Department of Environmental Protection (MassDEP) released a discussion document proposing revisions to its 1990 Noise Policy (the Policy)....

The Toxic Substances Control Act (TSCA) provides critical protections for commercially sensitive information related to a company’s business, processes, and chemicals.

The Ninth Circuit reversed a lower court and held that insurer Atlantic Specialty (as successor to One Beacon) had a duty to defend an employee's suit against his employer, a semiconductor manufacturer. In the underlying claim, the employee alleged exposure to chemicals at work caused birth defects in his son and sought $270M in damages.

The Situation: On February 12, 2026, the U.S. Environmental Protection Agency ("EPA") finalized the repeal of the 2009 Greenhouse Gas Endangerment Finding...

The Trump administration this Thursday announced the repeal of the 2009 endangerment finding — a conclusion based on decades of science that carbon dioxide and other greenhouse gases endanger public health and welfare.

Enacting what it called the "single largest deregulatory action in U.S. history", on February 12, 2026, U.S. Environmental Protection Agency (EPA) Administrator Lee Zeldin finalized a rulemaking that rescinds a 2009...