TagNoise(258)
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2022-01-01Environmental noise: compendium of WHO and other UN guidance on health and environment, 2022 update
★ 32A 2022 World Health Organization report on environmental noise outlines the health risks posed by traffic, aircraft, and leisure noise, including increased risk of heart disease, sleep disturbance, and hearing impairment. The report recommends that aircraft noise levels stay below 45 dB for average exposure and below 40 dB at night to protect public health. It also defines mitigation strategies ranging from reducing noise at the source to behavior change and community education. -
Common environmental noise levels
★How loud is too loud? Continued exposure to noise above 85 dBA (adjusted decibels) over time will cause hearing loss. The volume (dBA) and the length of exposure to the sound will tell you how harmful the noise is. In general, the louder the noise, the less time required before hearing loss will occur. According -
1997-02-01Sea-Tac International Airport impact mitigation study: Initial assessment and recommendations
★ 32The HOK Study. 1997 initial assessment and recommendations report for the Sea-Tac International Airport Impact Mitigation Study, prepared by Hellmuth, Obata + Kassabaum and Raytheon Infrastructure Services. The study was funded by a State of Washington grant on behalf of the cities of Burien, Des Moines, Federal Way, Normandy Park, and Tukwila, as well as -
1990-01-08FAA role in use of land at Sea-Tac
★A January 1990 FAA briefing document outlines the agency's role in land use at Seattle-Tacoma International Airport, explaining that federal involvement stems from approximately $115 million in federal funds spent on the airport since 1970 for planning, land acquisition, construction, and noise insulation. The FAA supported the concept of a park on airport land, provided the Port of Seattle maintained ownership and control, airport funds were not used for the park, and only compatible uses were allowed. The document also details Sea-Tac's noise mitigation efforts, including over $50 million in federal grants to acquire roughly 750 noise-impacted land parcels and more than $7 million to insulate 323 homes near the airport. -
1982-06-01Sea-Tac International Airport noise exposure update
★ 32This June 1982 report, produced by the Port of Seattle, provides an update on noise exposure levels at Seattle-Tacoma (Sea-Tac) International Airport. It documents the extent of aircraft noise affecting surrounding communities, serving as an official record to inform airport noise management and land-use planning policies. The report was part of ongoing efforts by the Port of Seattle to monitor and address the impact of airport operations on nearby residents. -
2026-09-13Stay Grounded Event: Night trains, not night planes!
For the past two years, more than 220 initiatives from 15 countries have declared September 13th as the International day for the ban of night flights at airports. In parallel, activists across Europe have been gathering for pyjama parties for night trains – coordinated in 2024 and 2025 by Back on Track and Stay Grounded. -
2026-08-30Appendix C Aircraft Noise
This document explains the fundamentals of aircraft noise at Seattle-Tacoma International Airport, covering how sound is measured in decibels and A-weighted decibels (dBA) to reflect human hearing sensitivity. It describes how outdoor sound levels decrease with distance due to wave spreading and atmospheric absorption, with noise typically dropping 6 dB each time the distance from the source doubles. A comparative chart of common indoor and outdoor noise levels is included to help put aircraft noise levels in everyday context. -
2026-08-30
Appendix C Aircraft Noise
This document explains the fundamentals of aircraft noise at Seattle-Tacoma International Airport, covering how sound is measured in decibels and A-weighted decibels (dBA) to reflect human hearing sensitivity. It describes how outdoor sound levels decrease with distance due to wave spreading and atmospheric absorption, with noise typically dropping 6 dB each time the distance from the source doubles. A comparative chart of common indoor and outdoor noise levels is included to help put aircraft noise levels in everyday context. -
2026-08-22Jerry Dinndorf Airport Files Box 4: Expert Arbitration Panel on Demand/System Management and Noise at Sea-Tac — Verbatim Record of Proceedings, May 3–5, 1995 (1992–1996)
This archival record (Box No. 01421) contains Jerry Dinndorf's airport files covering the years 1992–1996, including verbatim proceedings from an expert arbitration panel on demand, system management, and noise at Seattle-Tacoma International Airport (May 3–5, 1995), along with original documents and returned envelopes related to the mailing of an addendum notice. The record was prepared by Doris Dungan on 21 July 2005 and is held in offsite storage under the Airport Information Resources (AIR) department. It was scheduled for review in 2011 and remains on long-term loan. -
2026-08-22
Jerry Dinndorf Airport Files Box 4: Expert Arbitration Panel on Demand/System Management and Noise at Sea-Tac — Verbatim Record of Proceedings, May 3–5, 1995 (1992–1996)
This Archives and Storage record (Box No. 01421, Department Code AIR, CID 11128) was prepared by Doris Dungan on 21 July 2005 and covers Jerry Dinndorf airport files box 4, including a verbatim record of proceedings from an Expert arbitration panel on demand/system management and noise at Sea-Tac (May 3–5, 1995) and returned envelopes related to notice of addendum issuance and availability, spanning 1992–1996. The record copy is held at Offsite Storage under a Long Term Loan status.