Pacific Northwest Archives — Environmental Science Associates

January 30, 2026

Proposed Revisions to Clean Water Act Section 401 Could Narrow State and Tribal Review

On January 13, 2026, the U.S. Environmental Protection Agency (EPA) announced proposed revisions to the existing Clean Water Act (CWA) Section 401 Water Quality Certification regulations that could narrow the scope of state and tribal review. The proposed rule—which is assumed will become known as the 2026 CWA Section 401 Certification Rule—was published to the […]

February 5, 2026

Webinar: Federal Budget, Permitting Policy, and Technology Solutions

Our experts will highlight key federal policy updates, including takeaways from the 2026 appropriations, the latest changes to environmental guidance and regulations, and the emerging innovations that will shape the year ahead.

January 26, 2026

Accelerating Transportation Project Delivery

ESA has created an AI-supported NEPA Assignment Navigator GPT for transportation agencies to better understand the application process for the Surface Transportation Project Delivery Program, aka the NEPA Assignment.

November 19, 2025