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Open house planned for Taxiway B Relocation Project's draft Environmental Assessment scope

Event is April 15; comments due by May 15

King County International Airport-Boeing Field (KCIA or Airport), through the King County Department of Executive Services (Airport Sponsor), and in coordination with the Federal Aviation Administration (FAA), intends to undertake a variety of project improvements to meet current FAA safety and design standards at the Airport. Project improvements include rehabilitating Runway 14R/32L and relocating Taxiway B approximately 50 to 75 feet to the west. Other project components include, but are not limited to:

  • Demolition and removal of pavement
  • Demolition and relocation of the airport traffic control tower (ATCT) and aircraft rescue and firefighting (ARFF) buildings
  • Land acquisition
  • Other support project components, such as stormwater facilities and fence construction

Pursuant to the requirements of the National Environmental Policy Act (NEPA) and FAA Order 1050.1G, a Draft Environmental Assessment (EA) will be prepared for these project improvements. The Draft EA will describe the project improvements and the impacts associated with the implementation of the project improvements on environmental resource categories outlined in FAA Order 1050.1G.

The Airport Sponsor is holding a scoping open house for the public and agencies to provide input regarding the issues to be addressed in the Draft EA. This open house will describe the general characteristics of the project improvements and identify the environmental resource categories to be analyzed in the Draft EA. This meeting, along with the 30-day comment period, will constitute the scoping process for the Draft EA. If an Environmental Impact Statement (EIS) is required by the FAA, this meeting will serve as the scoping session for the EIS.

Meeting details

Scoping Open House

Wednesday, April 15, 2026
5:30 - 7:30 p.m.
KCIA Flight Service Station
6526 Ellis Ave. S.
Seattle, WA 98108

Parking is available at the FSS. King County Metro routes 60 and 124 serve the nearest bus stop at Ellis Avenue South and South Warsaw Street.

Comments

Emailed comments on the scope for the EA may be sent to KCIACommunityOutreach@kingcounty.gov.

Comments may also be submitted via U.S. mail to:

King County International Airport-Boeing Field
ATTN: Eric Miller, Capital Project Manager
7277 Perimeter Rd. S., Suite 200
Seattle, WA 98108

All comments on the Draft EA must be received by 5 p.m. Pacific time on Friday, May 15, 2026.

For more information about the Taxiway B Relocation Project, visit the airport website. To learn more about the EA in detail, visit kingcounty.gov/airport/taxiway-b-nepa.