T-115 Timeline

Boeing Plant 1 Facility opens

Boeing Plant 1 (1918)

Port of Seattle purchases Terminal 115

Port of Seattle demolishes structures on the property and redevelops as a fish processing and cold storage facility and container terminal

T-115 Site listed by Department of Ecology

Port of Seattle and Boeing listed as Potentially Liable Parties

Agreed Order between the Port, Boeing, and Ecology

Development of Remedial Investigation Work Plan begins

Remedial Investigation fieldwork begins

Field staff monitor groundwater from installed wells in summer 2025

Anticipated completion of Remedial Investigation fieldwork

Anticipated approval of Remedial Investigation/Feasibility Study

Anticipated publication of draft Cleanup Action Plan

Prepare for design, permitting, and implementation of the cleanup plan