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Airport Noise & Part 150 Study FAQs

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Port of Seattle
Noise Mitigation
Part 150
2013

This FAQ document from the Port of Seattle addresses common questions about noise management at Seattle-Tacoma International Airport, including how and when the third runway is used, why the Port cannot impose noise-based restrictions on runway operations, and what types of noise mitigation projects qualify for FAA funding. It outlines the history of the Port's noise reduction efforts, such as home acquisitions, insulation programs, and the Fly Quiet Incentive Program, and explains the goals of the Part 150 Noise Study process. The document also highlights the economic importance of Sea-Tac to the Puget Sound region while acknowledging the challenges of reducing noise in a densely populated area around a major international airport.

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Notes

Port Of Seattle FAQ document addressing Sea-Tac Airport noise mitigation and the Part 150 Study process. Covers third runway (16R/34L) operations versus 1997 Supplemental Environmental Impact Statement projections, FAA authority over runway operations, Airport Noise & Capacity Act (ANCA) restrictions on curfews, DNL65 noise contour eligibility for insulation projects, FAA grant funding (up to 80%) for noise mitigation, Port of Seattle acquisition of approximately 1,466 single-family homes since 1976, insulation of more than 9,300 homes, Highline School District $100 million pledge, Fly Quiet Incentive Program, and Sea-Tac’s fourth Part 150 Study begun November 2009. Also addresses economic impacts: 89,000 jobs, $2.2 billion direct earnings, $13 billion in business revenue, $412.4 million in state and local taxes.

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