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Engrossed Second Substitute Senate Bill 5955: Large Port Districts—Aircraft Noise Mitigation

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SB5955

Washington State's Engrossed Second Substitute Senate Bill 5955, signed into law on March 19, 2024, addresses aircraft noise mitigation for large port districts like the Port of Seattle, which operates Seattle-Tacoma International Airport. The law allows the port to repair or replace noise mitigation equipment that is no longer functioning properly or has caused structural damage to nearby properties, using non-federal local funding. It also acknowledges that communities of color — including Black, Hispanic, Native Hawaiian, and Pacific Islander residents in King County — are disproportionately impacted by airport noise, and establishes a state partnership to improve equity and responsiveness in noise mitigation efforts.

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Washington State 68th Legislature 2024 Regular Session Engrossed Second Substitute Senate Bill 5955 (E2SSB 5955), Chapter 194 Laws of 2024, approved by Governor Jay Inslee on March 19, 2024, effective June 6, 2024. Sponsored by Senators Keiser, Hasegawa, Kauffman, Nguyen, and C. Wilson. Amends RCW 53.54.020, RCW 53.54.030, and RCW 53.54.040 relating to aircraft noise mitigation in large port districts operating commercial service airports, including Sea-Tac Airport in King County. Addresses repair or replacement of noise mitigation equipment causing hazards or structural damage, defines ‘impacted areas’ within 10 miles north and 13 miles south of runways, and incorporates environmental justice language noting disproportionate impacts on Black, Hispanic, Native Hawaiian, and Pacific Islander communities within 10 miles of Seattle-Tacoma international airport. Adds new sections to chapters 43.330, 53.20, and 43.131 RCW.

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