SEA Part 150
Noise Study
Join Us for the Part 150 Noise and Land Use Compatibility Study Workshops
The Port of Seattle invites you to attend a public workshop to learn about the current Part 150 Study for Seattle-Tacoma International Airport (SEA). This multi-year study evaluates SEA’s aircraft noise compatibility with the surrounding communities and explores current and potential new efforts to reduce the effects of aircraft noise on these communities. This voluntary study follows the Federal Aviation Administration’s regulatory process.
The in-person workshops will share information about the study’s timeline, projected aircraft noise levels in the surrounding communities, and proposed draft measures aimed at reducing noise. Attendees will have the opportunity to offer feedback on proposed measures and suggest additional noise reduction measures for evaluation within the study.
Similar to previous study workshops, each workshop will be held in an “open house” format with no formal presentation. The workshops will be an interactive format to maximize opportunities for one-on-one conversations and allow participants to share information, ideas, and concerns about potential measures with staff and consultants. Since the information will be identical at each of these three workshops, you may attend any workshop at any time during the hours listed.
Need language interpretation, Americans with Disabilities Act (ADA) accommodations, or have questions? Contact the Noise Programs office at 206-787-5393 or P150@portseattle.org. Please submit all requests seven business days in advance of any workshop.
Food and childcare will be provided.
October Workshops
Date: Saturday, Oct. 17
Time: 10 a.m. – 12 p.m.
Location: Cedarhurst Elementary School
611 S 132nd St, Burien, WA 98168
Date: Monday, Oct. 19
Time: 6 – 8 p.m.
Location: McMicken Heights Elementary School
3708 S 168th St, SeaTac, WA 98188
Date: Tuesday, Oct. 20
Time: 6 – 8 p.m.
Location: Midway Elementary School
22447 24th Ave S, Des Moines, WA 98198
Project Overview
The Port of Seattle began a new multi-year Part 150 Noise and Land Use Compatibility Study update for Seattle-Tacoma International Airport (SEA) in 2024. The project is currently progressing through the Noise Compatibility Program (NCP) phase following completion of the Noise Exposure Map (NEM) phase.
A Part 150 Noise and Land Use Compatibility Study is a voluntary FAA program that sets guidelines for airport operators to document aircraft noise exposure, and to establish noise abatement and compatible land use programs. These noise abatement procedures and/or mitigation programs must be approved by the FAA in order to qualify for potential federal funding. This will be the fourth Part 150 update undertaken at SEA Airport since the initial study was conducted in 1985.
The study identifies and evaluates two components, (1) aircraft noise levels and (2) land uses, during two distinct phases of this study:
- Noise Exposure Maps (NEM) phase – contour maps are produced showing existing and future aircraft sound levels using the FAA-required 65 DNL noise metric.
- Noise Compatibility Program (NCP) phase – measures recommended in an NCP are designed to reduce noise and incompatible land uses within the noise exposure area. These may include noise abatement measures, noise mitigation measures such as sound insulation programs, and/or preventative measures.
Noise Exposure Map (NEM) Workshops
The Port held a second series of workshops to provide an overview of the development and results for the Noise Exposure Maps (NEMs), as part of the Part 150 Study process. These workshops occurred on: September 30th, 2025 from 6:00 to 8pm at Parkside Elementary School in Des Moines, October 2nd, 2025 from 6:00 to 8:00pm at Seahurst Elementary School in Burien, October 4th, 2025 from 10:00am to noon at Glacier Middle School in SeaTac, and a virtual workshop was held via Zoom on October 15th, 2025 from 6:00pm until all study-related questions were answered.
Workshop materials are available in the Documents section of this website. The study includes extensive public engagement throughout the process.
