Michelle Sliwinski DeMaio is a partner in the Firm’s Environmental Transactional Practice Group in the Washington, D.C., office. She counsels clients in all areas of environmental law across a variety of industries, primarily in the context of mergers, acquisitions, divestitures, securities offerings, financing transactions, and bankruptcies. Michelle conducts environmental due diligence, manages environmental consultants, negotiates purchase, lease and credit agreements, and assists in the procurement of environmental insurance policies. She counsels clients on environmental liabilities and the allocation and/or mitigation of environmental risks in the context of corporate and real estate transactions.

Michelle also maintains an active pro bono practice, which includes representing unaccompanied children in immigration proceedings.


Thought Leadership


Sliwinski, M., Note, Addressing the Fissures in Causation Claims: A Case Against the Use of Lone Pine Orders as Procedural Hurdles in Hydraulic Fracturing Litigation, 7 GEO. WASH. J. ENERGY & ENVTL. L. 77 (2016).

Sliwinski, M., Agricultural Pollution in the Chesapeake Bay: Flawed CAFO Regulation and Strategies for Effective State Enforcement and Compliance Assurance, 1 THE PUBLIC INTEREST LAW FORUM AT THE GEORGE WASHINGTON UNIVERSITY LAW SCHOOL (2015).


Admissions & Qualifications

  • 2016District of Columbia


  • The George Washington University Law SchoolJ.D.with High Honors2016

    Order of the Coif

    Senior Notes Editor, The George Washington University Journal of Energy & Environmental Law

    GW Pro Bono Recognition Award

    The President’s Volunteer Service Award

    George Washington Scholar

  • The George Washington UniversityB.S., Biological Sciencesmagna cum laude2013

    Departmental Honors in Biology

    David Atkins Prize for Undergraduate Research in Biological Sciences

    Luther Rice Research Fellow

    Harlan Trust Research Fellow