Site Closure Investigation Services

The Port of Tacoma, Washington is seeking a vendor to provide site closure investigation services. The agency requires an investigation work plan that organizes the project into three stages to improve efficiency, align with contractor availability, and allow the port to move forward quickly. The scope of work involves drilling borings, collecting soil and groundwater samples, and confirming the removal of a former wax tank. The project also covers additional porewater sampling, the redevelopment and sampling of existing wells, the installation of new monitoring wells, and the collection of further soil and groundwater samples. The agency is contracting these services for a three-year period, and the performance of the work will take place offsite. The agency limits eligibility to onshore, United States organizations only. Bidders must submit any questions regarding this opportunity no later than June 9, 2026. The agency is looking for proposals to determine the budget and allows digital submissions via email or online.