Employees — 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 […]

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.

January 6, 2026

Emerging Technology in Aviation: An Introduction to Advanced Air Mobility

Advanced Air Mobility (AAM) is an exciting emerging aviation technology sector that uses highly automated systems to transport passengers and cargo—and it could revolutionize air transportation as we know it.

January 29, 2026