TagPart 150(269)

This document maps the Part 150 Noise Monitoring Locations surrounding Seattle-Tacoma International Airport, as prepared by the Port of Seattle in August 1998. It identifies dozens of measurement sites categorized as permanent, semi-permanent, or temporary, spread across communities north and south of the airport including Burien, Des Moines, Normandy Park, Mercer Island, and as far north as the University District. Each site is listed with its specific street address or intersection, providing a detailed geographic record of how aircraft noise was tracked across the wider Seattle-Tacoma region.

This document contains materials from the Seattle-Tacoma International Airport FAR Part 150 Noise Study, including an agenda for a Citizens Advisory Committee meeting held on July 22, 1998, at the airport's Main Terminal Building. The meeting covered topics such as a presentation of Working Paper One on inventory, preliminary noise monitoring results, and an open house discussion. A tentative schedule for follow-up meetings through December 1998 was also included, covering sub-committee sessions and additional CAC/TAC public meetings.

Draft Working Paper One of the Seattle-Tacoma International Airport (Sea-Tac) FAR Part 150 Study, dated July 1998, prepared by Port Of Seattle. This inventory chapter updates the 1994 Part 150 program and covers airport physical facilities, air traffic operations activity, airspace/air traffic control, ANOMS radar data, current noise abatement program, noise complaint history, airport environs,

This Port of Seattle glossary defines key acoustic and air traffic control terms used in airport noise policy discussions. It explains measurements like decibels (dB), A-weighted decibels (dBA), and the Day-Night Noise Level (DNL), which is a 24-hour average used to map noise exposure around Sea-Tac Airport. It also covers Federal Aviation Regulations (Parts 36, 91, and 161) that govern aircraft noise standards, phase-out schedules for older noisy aircraft, and the process for airports to adopt new noise rules.

This document presents evidence that the Port of Seattle violated Federal Grant Assurance C.6 and Washington State law RCW 53.54.020 in connection with its FAR Part 150 Noise Compatibility Program at Seattle-Tacoma International Airport. It compiles 17 items of supporting evidence, including a 1998 congressional request for a GAO audit, state auditor correspondence, findings by Deloitte & Touche identifying violations from 1990 to 1994, and records showing the Port received over $100 million in federal funds tied to noise mitigation commitments it allegedly failed to honor. The materials illustrate the consequences for surrounding communities and governments that held land-use authority under the noise compatibility planning process.

This catalog lists documents received in 1993 related to Sea-Tac International Airport and regional air transportation policy, covering topics such as airport noise studies, environmental impact statements, and air quality plans for the Puget Sound area. Sources include the FAA, US EPA, Washington State DOE, and various consulting firms. The collection spans noise compatibility programs, aircraft deicing environmental concerns, wetlands restoration, and long-range aviation forecasts for the Pacific Northwest.

This Summer 1998 newsletter from the Seattle-Tacoma International Airport Noise Abatement Office covers the Noise Remedy/Home Sound Insulation Program, explaining how the program boundary was established using 65 DNL noise contours and noting that 6,375 of 10,000 eligible homes had been insulated by Q1 1998. It also includes a quarterly report on fleet noise compliance, flight pattern changes, and an update on the Part 150 Noise Study, which was set to be presented at a public open house on July 23, 1998. Additionally, the newsletter lists upcoming regional airshow events for summer 1998, including Seafair and the Blue Angels, along with associated noise complaint contact numbers.

This Sea-Tac International Airport brochure, prepared by the Port of Seattle in Summer 1998, compares the noise footprints of Stage II jets, Stage III jets, and general aviation/commuter aircraft to help residents understand the noise impacts of different aircraft types. It explains that Stage III aircraft are significantly quieter than Stage II aircraft, and that replacing older Stage II planes with newer Stage III models would meaningfully reduce noise levels in surrounding communities. The document also defines key noise measurement terminology, including DNL (Day-Night Average Sound Level), and notes that nighttime flights carry a 10-decibel penalty in noise accounting.

This May 1998 document from the Barnard Dunkelberg & Company Team presents a FAR Part 150 Study Update for Seattle-Tacoma International Airport, covering the history of federal aviation noise policy. It traces key regulatory milestones including the FAA Aviation Noise Abatement Policy of 1976, the Aviation Safety and Noise Abatement Act of 1979, and the Airport Noise and Capacity Act of 1990. The document explains what FAR Part 150 is, what it means for airport operators and surrounding communities, and how voluntary land-use compatibility studies evolved into formal regulatory requirements over time.

This Spring 1998 newsletter from the Port of Seattle provides an update on the Seattle-Tacoma International Airport FAR Part 150 Aircraft Noise and Land Use Compatibility Study, which aims to reduce the impact of aircraft noise on surrounding neighborhoods. The study involves measuring existing and predicting future noise levels, evaluating noise reduction and land use alternatives, and producing noise exposure maps using the FAA's Integrated Noise Model. Citizens raised key concerns at an initial open house, including adherence to flight tracks, ground noise, and expansion of sound insulation programs, with findings to be presented at a second public open house on July 23, 1998.