TagAEDT(19)

This document is Appendix G of the Seattle-Tacoma International Airport Part 150 Noise Study, compiling public comments and official responses gathered during the study's development. It covers a wide range of topics organized into three main areas: Part 150 regulations and noise exposure maps (including noise metrics, flight tracks, and FAA guidelines), current airport operations and community concerns (such as flight paths, nighttime operations, and the sound insulation program), and miscellaneous issues like health effects, air quality, and property values. Comments were collected through multiple channels including public open houses, workshops, the study website, and email.

This document presents the official Noise Exposure Maps (NEMs) for Seattle-Tacoma International Airport (SEA), developed as part of the FAA Part 150 noise study. It includes maps showing 2022 existing noise conditions and projected 2032 future conditions, along with the flight tracks used in the Aviation Environmental Design Tool (AEDT) modeling for both north and south flow operations. The maps illustrate the geographic extent of aircraft noise impacts across surrounding communities, including Seattle, Burien, SeaTac, Tukwila, and Des Moines.

This document presents the official Noise Exposure Maps (NEMs) for Seattle-Tacoma International Airport (SEA), developed as part of a Federal Aviation Administration Part 150 noise study. It includes maps showing aircraft noise impact areas for both 2022 existing conditions and projected 2032 future conditions, along with the flight track data used to model noise levels across surrounding communities such as Burien, SeaTac, Tukwila, and Des Moines. The maps were generated using the Aviation Environmental Design Tool (AEDT) and depict noise contours overlaid on land use data to help inform airport noise compatibility planning.

Appendix H of the Seattle-Tacoma International Airport (Sea-Tac Airport) Part 150 Study, containing official Noise Exposure Maps (NEMs) for 2022 Existing Conditions and 2032 Future Conditions, signed by Sarah Cox, Director of Aviation Environment & Sustainability, Port of Seattle, dated 06/20/26. Includes Aviation Environmental Design Tool (AEDT) flight tracks — North Flow and South Flow

Aviation Noise and Emissions Symposium (ANES) Aviation Working Group (AWG) presentation on seven specific community requests to airlines to mitigate departure noise at John Wayne Airport (SNA/Orange County). Covers NADP-1 steep departure procedures (1.2 dB reduction), STAYY4 two-turn procedure approved by FAA, 1200-foot throttle cutback, further power reduction at 1200 feet altitude initiated April 2024

The Aviation Environmental Design Tool (AEDT) Version 3g is a Federal Aviation Administration software system used to model aircraft operations and calculate their environmental impacts, including noise, emissions, and fuel consumption. This Quick Start Tutorial guides users through building basic noise and emissions studies, covering steps such as adding airports, creating flight tracks, setting up receptors, and running metric results. The tool is relevant to airport noise policy analysis, as it provides a structured method for quantifying and evaluating the environmental effects of aviation activity around airports like Sea-Tac.

The Integrated Noise Model (INM), developed by ATAC Corporation for the FAA, was the standard computer tool used to assess aircraft noise impacts near airports like Sea-Tac, calculating noise exposure contours and predicted sound levels at sensitive locations such as schools and hospitals. It was required for airport noise compatibility planning under FAR Part 150 and environmental reviews under the National Environmental Policy Act until it was replaced by the Aviation Environmental Design Tool (AEDT) in May 2015. Though no longer valid for regulatory use in the U.S., the INM was used by over 1,000 users in 65 countries to evaluate the noise effects of runway changes, flight routing, air traffic procedures, and shifts in aircraft fleet mix.