Professional Biography
Image of Mark Schneider

Mark W. Schneider Partner

  • Seattle

    D +1.206.359.8627

    F +1.206.359.9627


    1201 Third Avenue, Suite 4900

    Seattle, WA 98101-3099




Mark Schneider serves as lead counsel on some of the most significant sediment site matters in the United States, including the Lower Duwamish Waterway Superfund Site, Portland Harbor Superfund Site, and Kalamazoo River Superfund Site. He has litigated and settled landmark natural resource damage cases. He has worked on many groundwater contamination matters, including the Western Processing, Chem-Dyne, and Time Oil sites. Mark also has represented clients in successful litigation and negotiations with the federal government, recovering over $100 million from the government for its contributions to contamination at government contractor facilities.

Mark's practice involves the full range of environmental, energy, natural resource and land use issues. He assists clients with permitting, compliance and regulatory matters under federal and state laws, including the Clean Water Act, Clean Air Act, Endangered Species Act, National Environmental Policy Act and various state environmental policy acts. He also represents clients in environmental litigation matters, including cases involving CERCLA, state Superfund and multiparty allocation proceedings; natural resource damage claims; defense of project permits, licenses and other governmental approvals; government enforcement actions; Total Maximum Daily Load and other Clean Water Act matters; investigations; toxic tort; insurance recovery; and citizen suits. Additionally, he assists clients with corporate and real estate transactions, due diligence investigations, brownfields redevelopments, audits, environmental management systems and climate change issues. Mark regularly serves as a mediator and has assisted parties in resolving many litigated and non-litigated matters.

Mark is an elected Fellow of the American College of Environmental Lawyers and is rated as a Band One lawyer by Chambers USA.

2020 Chamber USA Logo

Ranked by Chambers USA 16 Years in a Row

Professional Recognition

  • Fellow of the American College of Environmental Lawyers, 2014 - 2020
  • Rated as Band One by Chambers USA, “America’s Leading Environment and Natural Resources Lawyers,” 2005 - 2020
  • Listed in Super Lawyers Magazine, "Washington's Super Lawyers," 2001 - 2020
  • Listed in The Best Lawyers in America 2003 - 2021: Commercial Litigation; Energy Law; Environmental Law; Litigation - Environmental; Natural Resources Law
  • Named the Best Lawyers "Lawyer of the Year" for Environmental Law, 2016, 2017
  • Selected as a "Top Rated Lawyer" in Energy/Environmental by American Lawyer Media, 2013
  • Named the Best Lawyers "Lawyer of the Year" for Natural Resources Law, 2012
  • Listed as a "Top Lawyer in Mergers & Acquisitions" by Washington CEO/Avvo
  • Peer Review Rated AV in Martindale-Hubbell
    (AV®, BV® and CV® are registered certification marks of Reed Elsevier Properties Inc., used in accordance with the Martindale-Hubbell certification procedures, standards and policies.)

Professional Leadership

  • Washington State Bar Association, Trial Practice Section; Environmental Law and Land Use Section
  • American Bar Association, Litigation Section; Environment, Energy and Resources Section
  • BNA's Environmental Due Diligence Guide, Advisory Committee Member

Related Employment

  • U.S. Department of Justice, Environment and Natural Resources Division, Environmental Enforcement Section, Washington, D.C., Trial Attorney


  • Hon. Jerome Farris, U.S. Court of Appeals for the Ninth Circuit





Bar and Court Admissions

  • Washington
  • U.S. Supreme Court
  • U.S. Court of Appeals for the Sixth Circuit
  • U.S. Court of Appeals for the Ninth Circuit
  • U.S. District Court for the Western District of Michigan
  • U.S. District Court for the Eastern District of Washington
  • U.S. District Court for the Western District of Washington


  • Northwestern University Pritzker School of Law, J.D., cum laude
  • Dartmouth College, B.A., cum laude


  • French