Member Information

Seth D. Jaffe

Foley Hoag LLP

Seaport World Trade Center West
Boston, MA02210-2600

Seth Jaffe is Partner and Coordinator of the Environmental Practice Group at Foley Hoag LLP in Boston, Massachusetts. Seth is recognized by Chambers USA, The Best Lawyers in America and Massachusetts Super Lawyers as a leading practitioner in environmental compliance and related litigation. He is a past President of the American College of Environmental Lawyers. As an author of Foley Hoag's Law and the Environment blog,, Seth provides real-world perspectives on current developments in environmental law and regulation. Seth represents clients in the permitting/licensing of new facilities and provides ongoing guidance on compliance and enforcement related matters under federal and state Clean Air Acts, Clean Water Acts, RCRA, and TSCA. He also advises on wetlands and waterways regulation. His clients include energy generation facilities, pharmaceutical companies, and education and health care institutions. With extensive experience in hazardous waste matters under federal and state Superfund laws, Seth has defended multiple clients in administrative or litigation proceedings brought by the government and/or private parties. He has also counseled plaintiffs seeking recovery from private parties of response costs incurred at Superfund sites. Seth also helps clients permit large development projects, including assistance with environmental reviews under NEPA and related state laws.

Work Phone:

EPA Region:
Region 1 – (CT, ME, MA, NH, RI, and VT)
Year of induction:
Yale Law School, 1986, J.D Harvard School of Government, 1983, M.P.P. Massachusetts Institute of Technology, 1981, S.B.
Court Admissions:
United States District Court for the District of Massachusetts 1st Circuit Court of Appeals.
Other Environmental Career Experience:
Environmental League of Massachusetts, Board Member, 2005-Present, Board Chair, 2011-2016 NAIOP Massachusetts Chapter, Member, Government Affairs Advisory Committee; Co-Chair, Environmental Committee, 2005-2013 Massachusetts Corporate Wetlands Restoration Partnership, Board Member, 2003-2011 New Ecology, Inc., Board Member, 1999-2009 Massachusetts Department of Environmental Protection, Regulatory Reform Task Force 2011 Boston Bar Association Environmental Section, Chair, 1999-2002 Boston Bar Association Environmental Section, Hazardous Waste Committee, Chair, 1995-1997 Boston Bar Journal, Board of Editors, 1998-2000 Massachusetts Department of Environmental Protection Wetlands Program, Volunteer Mediator, 1993-1995; Trained mediator Massachusetts Environmental Justice Network, Steering Committee Member, 1994-2003
Representative Publications:
Author, Law and Environment Blog,
Illustrative Projects:
Represented Entegris, a leader in specialty chemicals and advanced materials solutions for the microelectronics industry, in the environmental aspects of a number of different acquisitions. Provides ongoing compliance advice to a number of electric generating facilities. Represents various firms in energy generation and transmission siting and licensing new projects. Represents large biopharmaceutical company in defense of claims alleging violations of the Clean Air Act. Represents large asphalt manufacturing in defense of Clean Air Act and related nuisance claims. Represents maker of filtration equipment in settlement of claims alleging violation of Clean Water Act requirements. Represented the owner of several hydropower facilities in defense of citizen suit claims under the Endangered Species Act and Clean Water Act. Represents several PRPs and groups of PRPs in all aspects of CERCLA remedy negotiation and implementation including related litigation. Represented Boston University in the development of the National Emerging Infectious Diseases Laboratories in Boston, Massachusetts, including assistance in complying with NEPA and MEPA.
Citations of Major Published Cases:
Acushnet v. Coaters, 191 F.3d 69 (1st Cir. 1999)