Chamber of Commerce of the United States of Americ, et al v. EPA, et al

  1. January 20, 2026

    DC Circ. Doubts If EPA Had To Quantify Costs In PFAS Rule

    The D.C. Circuit on Tuesday seemed to favor the U.S. Environmental Protection Agency's position that public comments were properly solicited before labeling two forever chemicals as hazardous substances, and expressed skepticism that the agency should have done a more rigorous analysis of clean-up costs for businesses.

  2. January 02, 2026

    DC Circ. Cases To Watch In January

    The D.C. Circuit will start the New Year hearing several noteworthy cases, including a challenge to the Trump administration's transgender troop ban and a fight over whether two common "forever" chemicals qualify as hazardous materials under the Superfund law.

  3. September 18, 2025

    EPA Will Maintain Hazardous Designations For PFOA, PFOS

    The U.S. Environmental Protection Agency has said it will defend the Biden administration's decision to list two common forever chemicals as hazardous substances under the federal Superfund law.

  4. February 14, 2025

    Enviro Groups Back EPA On Challenged PFAS Superfund Rule

    Conservation groups are urging the D.C. Circuit to deny a string of industry challenges to the U.S. Environmental Protection Agency's decision to designate two "forever chemicals" as hazardous substances under the federal government's Superfund law, arguing that they have no merit.

  5. January 21, 2025

    EPA Tells DC Circ. Its PFAS Superfund Rule Is On Solid Ground

    The U.S. Environmental Protection Agency has claimed that it is perfectly within its authority to label two forever chemicals as "hazardous substances" under the federal Superfund law, urging the D.C. Circuit to toss an industry group's challenge to its designation powers.

  6. January 01, 2025

    Top Environmental Cases To Watch In 2025

    The new year will likely see several consequential environmental law cases reaching resolution, including a legal attack on a long-used approach to pollution control in Clean Water Act permits and challenges to the Biden administration's environmental justice efforts. Here are the key environmental law cases to watch in 2025.

  7. November 05, 2024

    EPA's Superfund 'Blank Check' Dooms PFAS Rule, Groups Say

    The U.S. Environmental Protection Agency wrote itself a legal "blank check" to increase the number of chemicals subject to required cleanups under federal Superfund law, industry advocates told the D.C. Circuit.

  8. June 13, 2024

    Chamber Asks DC Circ. To Reject EPA's PFAS Designation

    Three business groups, spearheaded by the U.S. Chamber of Commerce, have gone to the D.C. Circuit to challenge the U.S. Environmental Protection Agency's recent decision to declare two "forever chemicals" to be hazardous materials under federal law.