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This content is provided by David Van Slyke.

Practice Areas

Immediate past chair of firm's Environmental Law Practice Group and Climate Strategy Group. Practice areas include environmental aspects of corporate strategic planning and compliance counseling; environmental litigation; due diligence in business and lending transactions; allocation of environmental liability; defense of governmental enforcement actions and toxic tort suits; and expert witness regarding US EPA policy and procedures.


Booz-Allen & Hamilton 1982-83; US EPA: Enforcement Attorney 1983-87, Section Chief 1987-89, Deputy Director - Hazardous Waste Division 1989-90, Director - Superfund Division 1990-91. Preti Flaherty: Of Counsel 1991-94, Partner 1994, Environmental Practice Group Chair 1995; Managing Partner 2020.

Professional Memberships

Admitted to practice: District of Columbia (1982), Maine (1992), US District Court (DC 1982, Maine 1992), US Court of Appeals (First Circuit 1998). Member: Maine State Bar Association (Natural Resources Section), ABA (Litigation; Environment, Energy and Resources Sections). Fellow - American College of Environmental Lawyers. Commissioner, New England Interstate Water Pollution Control Commission (2013 - present).


Born 21 September 1954; JD, Syracuse University Law School 1981; BS (Chemistry), St. Lawrence University 1976. EPA awards: Department of Justice Commendation for Outstanding Service (1991); Assistant Administrator's Enforcement Award for Excellence (1990); Special Achievement Silver (1990) and Bronze Medals (1986 and 1988).