TagNoise Mitigation(208)

Chapter 53.54 RCW authorizes Washington port districts operating large airports (such as Sea-Tac) to carry out programs that reduce the impact of jet aircraft noise on surrounding neighborhoods, including purchasing properties, providing soundproofing, and offering transaction assistance to affected homeowners. The law defines 'impacted areas' with specific distance limits from runways and allows properties within those boundaries to receive noise mitigation benefits. Recent 2024 updates expand the program to allow inspection, repair, or replacement of previously installed noise mitigation equipment that is no longer working as intended or has caused structural damage.

Former King County International Airport (BFI) Noise Officer Sharyn Parker's prepared notes for a GAO interview outline significant concerns about FAA regulatory failures and Sea-Tac Airport's inadequate noise mitigation practices in the Seattle region. Parker argues that the FAA has consistently failed to require Sea-Tac to update noise exposure maps, enforce timely sound mitigation programs, or conduct meaningful public outreach — particularly for minority communities disproportionately affected by flight path changes like the Greener Skies/RNP initiative. The notes also highlight contradictions between Sea-Tac's deliberately low flight-operation projections in its Part 150 noise studies and the far higher growth figures used in its capital development plans.

Handwritten notes reviewing an FAA document on airport grant assurances, referencing noise mitigation policy and Kandahar Corridor Syndrome (KCS). The notes criticize the postponement of noise mitigation efforts in favor of the SAMP (Sustainable Airport Master Plan), quoting language suggesting 'little or no downside for the clients' and expressing concern that passengers and airlines are being prioritized over local communities. A URL referencing FAA airport grant assurances (airport-sponsor-assurances-aip(1).pdf) is also included.

This document details noise-related Airport Improvement Program (AIP) grants awarded to Seattle-Tacoma International Airport (Sea-Tac) from 2002 through 2015, covering purposes such as noise mitigation for residences and public buildings, land acquisition for noise compatibility, and noise compatibility plan studies. Grant amounts range from hundreds of thousands to over eleven million dollars, targeting properties within various Day-Night Level (DNL) noise contours of 65-69 and 70-74 DNL. An accompanying federal assistance application (SF-424) shows a 2015 grant totaling approximately $4.8 million for property acquisition, relocation, and sound insulation, signed by Port of Seattle's Managing Director of Aviation.

This legislative summary outlines a proposed bill to protect communities near busy flight routes from aviation noise and pollution. It establishes a process for the FAA to designate 'aviation-impacted communities' located within one mile of low-altitude commercial or cargo flight paths, create local community boards to engage with the FAA and airport operators, and develop action plans and mitigation funding for affected residents. Key provisions include grants for sound insulation and noise barriers, eligibility for neighborhoods within a 55 DNL contour, and requirements for the FAA to respond to community concerns within set deadlines.

This document provides an overview of the Aviation Impacted Communities Act, which establishes a formal process for communities affected by airport noise and flight paths. The process begins with the FAA notifying eligible communities of their 'designated community' status, then proceeds through board formation, meetings, studies, action plans, and ultimately grants for mitigation funds. A community qualifies as 'aviation impacted' if it is located no more than one mile from any commercial or cargo jet route at 3,000 feet or less above ground level.

This document illustrates common defects found in Port Package window and door installations in homes near Sea-Tac Airport, showing problems that go beyond normal wear and tear. Issues documented include exterior mold growth that impairs visibility, active water leakage between window panes, and serious structural damage caused by water infiltrating wall framing — in one case requiring a full wall replacement costing $100,000. These problems are reported across the geographic area where Port Packages have been installed and are not attributed to homeowner misuse.

Washington Senate Bill 5955 proposes creating a 'port district equity fund' to help large port districts—such as the one operating Sea-Tac Airport—pay for aircraft noise mitigation programs. The fund would be seeded with a $10 million appropriation for fiscal year 2025 and subsequently replenished by sales and use tax revenue collected on capital construction projects at the airport, with the port district required to match at least half of state-provided funds. The Department of Commerce would administer grants from the fund to cover costs such as inspecting and repairing soundproofing equipment in nearby homes and addressing any structural damage caused by its installation.

Washington State Senate Bill 5955 creates a 'port district equity fund' to help large port districts, such as the Port of Seattle operating Sea-Tac International Airport, pay for aircraft noise mitigation programs in nearby communities. The bill provides an initial one-time appropriation for FY 2025, followed by ongoing funding of up to $10 million per year drawn from sales and use taxes on capital construction projects within the district. It also requires port districts to apply for fund resources to repair or replace noise mitigation equipment that is no longer working or has caused structural damage to properties, with port districts required to match at least half of the Legislature's contribution.

Washington Senate Bill 5955 would require large port districts operating airports with more than 900 daily flights — such as Sea-Tac — to launch a remedial mitigation program addressing failed soundproofing, air quality, green space, and community facilities in noise-impacted neighborhoods. The bill would fund these programs through a portion of the port's annual property tax levy revenue and establish a state environmental equity fund, managed by the Department of Commerce, to provide grants and loans to qualifying ports. Property owners within ten miles of the airport experiencing 55 decibels or more of aircraft noise would be eligible for free inspections and mitigation equipment, with priority given to homes where previously installed soundproofing has failed.