Port of Kennewick’s contractor, Landau Associates, has prepared a cleanup action plan to address a small area of contaminated soil at Vista Field.
The Port invites the public to review and comment on the plan through close of business on February 10, 2026, using the comment form linked to the button below.
Public comments may also be made in person at the Port Commission’s regular meeting at the Port of Kennewick offices at 350 Clover Island Drive in Kennewick, Washington, on February 10, 2026, at 2 p.m.
Cleanup Action Plan
January 12, 2026
Results from samples collected by Landau Associates in September 2025 and in December 2025 show that only one location needs to be cleaned up.
The cleanup consists of excavation and removal of a small area of contaminated soil (approximately 30 cubic yards) that shows evidence of per- and polyfluoroalkyl substances (PFAs) contamination. The contaminated soil will be sent to a licensed disposal facility.
The Port has worked closely with the property owners and appreciates their cooperation and patience while the environmental testing and results were evaluated.
Background information
The Port was informed in June 2025 that soil samples collected by a property owner during construction activities at its property contained low concentrations of per- and polyfluoroalkyl substances (PFAS).
The Port then took steps to initiate additional sampling from that property to determine the validity of the initial sampling results, and from the larger Vista Field area.
The Port hired Landau Associates to evaluate the presence of PFAS at Vista Field utilizing a sampling methodology that meets the Washington Department of Ecology (Ecology) standards.
The Port had conducted a Phase 1 Environmental Assessment at Vista Field in 2014 that included an extensive evaluation of all pesticides, insecticides, petroleum products and other chemicals listed by Ecology as hazardous substances. The Assessment identified no conditions of concern. However, Ecology has since expanded its list of hazardous substances to include PFAS.
What are PFAS?
PFAS are a variety of synthetic chemicals used around the world since the 1950s. PFAS have been found in everyday consumer items like non-stick cookware, water- and stain-resistant products, grease-resistant food packaging and industrial uses such as firefighting foam and de-icing chemicals.
Landau Associates Report to Port Commission
September 23, 2025