Contractors will conduct pile driving at Terminal 5 in West Seattle beginning February 8, 2021. Pile driving will continue through March and possibly into April. The activity will include both vibratory and impact hammer pile driving. The vibratory method is relatively quiet and will likely be audible only to businesses and residences close to the terminal. Impact hammer driving will be more audible, and the sound will travel greater distances than the vibratory driving. The schedule calls for three or four days of vibratory driving, followed by three or four days of impact driving.
Under the City of Seattle’s Noise Ordinance, pile driving may take place between 8 a.m. and 5 p.m. weekdays, and between 9 a.m. and 5 p.m. weekends and legal holidays.
As we reported over the weekend, the Northwest Seaport Alliance managing members’ monthly meeting tomorrow will include an in-depth progress report on the T-5 project.
UPDATE: We’re told the vibratory pile-driving has actually already begun.