

Michael Dunning
- Seattle
Notice
Before proceeding, please note: If you are not a current client of Perkins Coie, please do not include any information in this e-mail that you or someone else considers to be of a confidential or secret nature. Perkins Coie has no duty to keep confidential any of the information you provide. Neither the transmission nor receipt of your information is considered a request for legal advice, securing or retaining a lawyer. An attorney-client relationship with Perkins Coie or any lawyer at Perkins Coie is not established until and unless Perkins Coie agrees to such a relationship as memorialized in a separate writing.
Mike helps clients solve complex challenges arising from land, water, and air pollution.
Environmental lawyer Michael Dunning has particular experience in matters involving contaminated sites (aka "dirty dirt"). He previously served for more than a decade as an assistant attorney general for the state of Washington and acted as lead counsel on some of the state's most challenging and complicated contaminated sites and cases.
As the former section chief of the Washington Attorney General's Hazardous Waste Cleanup section, Mike led a team supporting the state's Department of Ecology on all aspects of contaminated sites. His insider's view informs his innovative solutions for business, local government, and nonprofit clients in litigation, transactional, and permitting matters. Mike's depth of knowledge of Washington's superfund law, the Model Toxics Control Act (MTCA), includes experience as an expert witness.
Areas of focus
Education & Credentials
Education
- The University of Iowa, J.D., cum laude, 1999
- University of Texas at San Antonio, B.A., Political Science, German, 1995
Bar and Court Admissions
-
Washington
- Supreme Court of the United States
- U.S. Court of Appeals for the Ninth Circuit
- U.S. District Court for the Eastern District of Washington
- U.S. District Court for the Western District of Washington
Related Employment
- Attorney General of Washington, Olympia, WA, Assistant Attorney General, 1999-2004; Chief, Hazardous Waste Cleanup & Management Section, 2005-2011
- Washington State Department of Health, Olympia, WA, Assistant Director for Policy and Legislation, 2004-2005
- U.S. Army, Operation Desert Shield/Storm, Veteran, 1986-1991
Professional Recognition
Listed in Lawdragon 500 Leading U.S. Environmental Lawyers, 2024
Ranked by Chambers USA as “America’s Leading Lawyer" for Environment, 2021-2024
Listed in Best Lawyers in America: Environmental Law, 2015-2025
Listed in Who’s Who Legal: Environment, 2019
Recommended by The Legal 500: Industry Focus: Environmental - transactional and regulatory, 2015
"Rising Star," Washington Law & Politics, 2007, 2009
Impact
Professional Leadership
- Washington State Bar Association, Environmental & Land Use Law Section, 2012 Annual Midyear Meeting & CLE Program, Co-Chair, 2012
- Washington Real Property Deskbook, Volume 7: Environmental Regulation, Editor-in-Chief
- Washington State Attorney General Office 2007 Outstanding Employee
- Washington State Attorney General Office 2010 Outstanding Litigation Team Award
Community Involvement
- Washington State Trails Association, Board Member
- Washington Business Alliance, Former Board Member
- Seattle Stand Down, Emeritus Board Member