Sea-Tac Airport Impact Study 2018


You can find the current draft report here.

The Washington State Legislature enacted Engrossed Substitute Senate Bill (ESSB) 6032 during the 2018 regular session.

•The Washington State Legislature formally asked Commerce on 3/21/2018 to complete a study that evaluates the current and on-going impacts of the Seattle-Tacoma International Airport. •Commerce must implement provisions of Sections of Engrossed Substitute Senate Bill (ESSB) 6032–Section 127(63).

Policy basis

•Section 127(63) (“the Proviso”) provides in part that $300,000 of the general fund—(state appropriation) for fiscal year 2019 and $300,000 (local appropriation) are provided solely for Commerce to contract with a consultant for the study•The general fund—state funding provided in this subsection serves as a state match and may not be spent unless $300,000 of local matching funds is transferred to Commerce.


•Initiate and complete a study of the current and on-going impacts of the Sea-Tac International Airport (from 1997 to present). •Report those findings to the Washington State Legislature. •Note: Commerce was responsible for defining the parameters of the study in a statement of work (scope).


•A Technical Advisory Committee (TAC) that includes one public representative and one staff member from each city: SeaTac, Burien, Des Moines, Tukwila, Federal Way and Normandy Park. •Burien, Des Moines, Federal Way, Normandy Park, SeaTac and Tukwila provided the local matching funds.•Commerce and TAC developed a statement of work. Commerce selected a consultant (StantecConsulting Inc.) via a competitive selection process.•Research: Commerce, via the consultant, must research, collect data and relevant information from all appropriate sources. •Commerce must deliver the completed study to the Legislature by June 1, 2020.

Next Steps?

1) November 2019–January 2020 – Completion of draft report.

2) February 2020 – Draft document is delivered to, Commerce, Advisory Committee and Cities.

3) Two to three week review of draft.4)Meetings with all six cities beginning in March 2020 on draft document.

The draft report will be available on the Commerce website: