Mary S. Clemmensen

Mary Stubblefield Clemmensen, University of Illinois at Urbana-Champaign (B.S. 2007); Vermont Law School (J.D. 2013, cum laude).

Admitted to the District of Columbia Bar (2014).

Ms. Clemmensen has assisted clients on environmental and administrative law matters. She has helped tribes develop environmental laws addressing water quality, solid waste management, petroleum storage tanks, and hazardous materials transportation. She has also helped tribes seeking cleanup of contaminated sites under the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA), the Resource Conservation and Recovery Act, and other laws. Ms. Clemmensen has also prepared comments on behalf of clients regarding the environmental impacts of proposed federal projects.

Ms. Clemmensen was previously a Senior Staff Attorney with the Chesapeake Legal Alliance, where she founded and oversaw the organization’s Legal Innovation Program. Leading this program, she developed legal strategies to address pollution impacting the health of the Chesapeake Bay and its communities. Before then she worked as an Environmental Associate with CSC Government Solutions, LLC, where she advised the U.S. Environmental Protection Agency on sites placed on the National Priorities List for cleanup and assisted in CERCLA rulemakings. Ms. Clemmensen was also a litigation fellow with the Chesapeake Climate Action Network.