Clark J. Davis


Clark J. Davis is the principal lawyer at Davis Law Office.  Mr. Davis practices in the area of environmental litigation, with over 35 years of experience in cases arising under environmental laws, including enforcement actions, cost recovery actions, insurance disputes and investigations by environmental enforcement agencies.   Mr. Davis also represents clients in real estate transactions, particularly matters involving environmental issues.

After graduating from law school in 1979, Mr. Davis spent two years as a law clerk for Judge Caleb R. Layton in the United States District Court for the District of Delaware. Because of the concentration of companies incorporated in Delaware, he had the opportunity to work on judicial decisions concerning a wide range of issues arising in commercial litigation filed in that court.  After moving to Washington State in 1981, he spent a year teaching at Seattle University Law School, followed by 15 months in the Washington Office of the Attorney General, where he was hired to represent the State of Washington in a complex class action filed by the American Federation of State, County and Municipal Employees and the Washington Federation of State Employees.   

Mr. Davis entered private practice in 1984, handling civil litigation, including commercial litigation, insurance claims, and real estate matters.   Due to the rapid growth in the importance of environmental law, and the demand for skilled lawyers in this area, representation of clients with potential environmental liability soon became the predominant area of his practice.  Throughout his years in private practice  Mr. Davis has represented individuals and businesses in investigations and enforcement actions by the United States Environmental Protection Agency (EPA), Washington State Department of Ecology, and environmental enforcement agencies in other states. Among other accomplishments, Mr. Davis was among the first attorneys in the nation to pursue and obtain coverage under comprehensive general liability insurance policies for liability arising from environmental contamination.

Mr. Davis has represented some of the largest companies doing business in the State of Washington, at sites requiring major environmental cleanup.  He also frequently represents individuals and small businesses in cases of relatively minor environmental contamination, such as leaking storage tanks.



Areas of Practice

Environmental Litigation

Bar Admissions

Washington, 1981

Idaho, 1982

Oregon, 2012

U.S. District Court Western District of Washington, 1982

U.S. District Court District of Oregon, 2017

U.S. Court of Appeals 9th Circuit, 1993


Suffolk University Law School, Boston, Massachusetts

J.D. cum laude - 1979

Cornell University, Ithaca, New York

A.B. - 1973

Major:  Philosophy


Representative Cases

Portland Harbor Superfund Site, Portland, Oregon

Lower Duwamish Waterway Superfund Site, Seattle, Washington

Commencement Bay Superfund Site, Tacoma, Washington

Western Processing Superfund Site, Kent, Washington

Midway Landfill Superfund Site, Kent, Washington

Kent-Highlands Landfill Superfund Site, Kent, Washington

Tulalip Landfill Superfund Site, Tulalip, Washington

Strandley/Manning Superfund Site, Purdy, Washington

Counsel to parties in numerous real estate transactions involving environmental issues

Counsel to parties in numerous insurance coverage disputes

Counsel to parties in numerous environmental claims and enforcement actions


Honors and Awards

AV Rated


Professional Associations and Memberships

American Bar Association (Section on Natural Resources, Energy and Environmental Law)

Federal Bar Association

Cornell University, Ambassador

Peninsula Advisory Commission, Chairman

Board of Directors, Tacoma Youth Symphony, Former Member

National Youth Sports Coaches Association

Peninsula Schools Education Foundation, Former President


Past Employment Positions 

State of Washington, Assistant Attorney General

Seattle University Law School

Judge Caleb R. Layton, Law Clerk