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Washington Senate Bill 5898 proposes redirecting a portion of the state's hazardous substance tax on aircraft fuel to fund noise relief for communities near airports. Specifically, 25 percent of those tax proceeds would go into a new "state aircraft noise mitigation account," with the remaining 75 percent continuing to flow to the aeronautics account as before. The Department of Commerce would administer a grant program using these funds to support noise mitigation strategies in communities located within designated aviation impact areas, with the law taking effect July 1, 2027.

Washington state legislation (PSSB 5652) establishing partnerships and grant programs to address aviation-related air quality and noise impacts on communities near airports. The bill requires the University of Washington to develop exposure maps and assess health impacts, directs the State Auditor to evaluate noise mitigation retrofits, and creates a mitigation grant program administered by the

This is a fiscal note summary for Washington State Senate Bill 5955, which concerns large port districts. The document estimates operating expenditures primarily from the Department of Commerce, ranging from approximately $113,104 in the 2023-25 biennium to $114,136 in subsequent biennia, along with capital budget costs starting at $86,586. The Office of State Treasurer notes non-zero but indeterminate cash receipt impacts, while other agencies such as the Department of Revenue and Department of Ecology report no fiscal impact.

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 House Bill 1505 aims to promote the alternative jet fuel industry by establishing tax breaks for businesses that produce or sell alternative jet fuel, updating the state's Clean Fuels Program to better support aviation fuels, and directing Washington State University to convene a workgroup to study and make recommendations on alternative jet fuel policy. The bill also expands the Department of Commerce's Statewide Office of Renewable Fuels to include alternative jet fuels as a focus area. While the bill primarily addresses fuel economics and climate goals rather than airport noise directly, it is relevant to Sea-Tac Airport operations as it could influence the types of fuels used by aircraft flying in and out of the region.

HB 1099 is a Washington State bill focused on improving the state's climate response by updating the Growth Management Act to require counties and cities to include climate change and resiliency planning in their comprehensive land use plans. The bill mandates reductions in greenhouse gas emissions and vehicle miles traveled, and requires the Department of Commerce to publish guidelines for achieving statewide emissions targets. It also addresses coastal resilience by requiring Shoreline Master Programs to account for sea level rise and increased storm severity.

The Washington State Department of Commerce's Technical Advisory Committee (TAC) reviewed 72 recommendations from a study on Sea-Tac Airport's impacts on neighboring cities, ultimately prioritizing 13 key next steps. These priorities span public health, air quality, noise and vibration, mobility, and environmental concerns, including expanding late-night noise limits, improving air quality monitoring, and developing alternative noise metrics beyond standard day-night average (DNL) contours. The TAC also recommended revising the report's language around the Port of Seattle's airport expansion plans to reflect that the proposal was still under FAA review at the time of publication.

The Washington 2021 State Energy Strategy, published by the Washington State Department of Commerce in December 2020, outlines a blueprint for transitioning the state to clean energy by 2050, with the goal of nearly eliminating fossil fuel use while sustaining economic growth. The strategy emphasizes affordable and reliable energy, meeting science-based greenhouse gas emission limits, and ensuring that Tribes, rural communities, and low-income households are included as partners in the transition. Note: this document addresses statewide energy and climate policy and does not contain content related to Sea-Tac Airport noise policy.