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 issues. She has assisted many local and regional environmental and government clients find innovative solutions to complex issues through civil and administrative litigation and development of regulations. Ms. Clemmensen has also helped clients navigate complex hazardous waste, natural gas, power plant, endangered species, and water quality permitting programs.

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 focused on developing creative 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.