Senate panel hears testimony on bill requiring studies, mitigation and accountability for airport‑adjacent communities

Senator Tina Arwol, sponsor of Senate Bill 5652, told the Environment, Energy and Technology Committee the measure is designed to address long‑standing health and environmental harms in communities near large airport operations. “There’s ultrafine particles that are related to JET A fuel and they pass the blood‑brain barrier and they cause inflammation in the human body,” Arwol said, citing prior University of Washington and King County Department of Public Health work that links proximity to SeaTac with higher rates of asthma and shorter life expectancy.

The proposed substitute would require the University of Washington to research and develop tools to evaluate human and environmental health impacts of aviation near SeaTac and to complete that work by June 1, 2027. It would also direct Commerce to convene a work group, require King County Public Health to run one‑year mitigation strategy pilot projects and create a Commerce‑administered grant program funded partly from the Port District Equity Fund. The state auditor would evaluate Port of Seattle and FAA noise‑mitigation “port packages” and report by July 1, 2028.

Community members and local officials delivered extensive testimony after the bill was reopened for public comment. Brian Davis, vice chair of the Burien Airport Committee, said the port pledged a $5 million pilot to repair or replace failed noise insulation but had not completed repairs: “SB 56 52 is not about handouts, it’s about appropriate compensation for our community’s disproportionate sacrifice,” he said. Business owner Chad Raines described nighttime flights that he said regularly interrupt sleep and said he was selling his house because of the impact on his family. Karen Viloria, a 20‑year Burien resident, described mold and moisture in failed double‑pane windows installed as part of earlier mitigation packages.

Local governments testified in support. Rebecca Deming, community development director for Des Moines, urged stronger roles for cities in engagement and called the bill a “vital opportunity to correct longstanding environmental injustices” in airport communities. Joe Vinson, a SeaTac city council member, said the bill centers overburdened communities and vulnerable populations and urged support.

The Port of Seattle and the Washington Public Ports Association opposed significant elements of the substitute. John Flanagan, speaking for the port, said the language raises concerns about division of powers and how mitigation grants would be administered. “Current language gives other public entities the authority to dictate… how the programs work,” Flanagan said, and noted federal law limits the port’s ability to dedicate certain airport revenues to new mitigation programs. Eric Fitch of the Washington Public Ports Association warned the studies proposed could make it harder for ports to meet aviation demand.

Supporters pointed to multiple studies and public‑health consequences, including work by UW and King County that link ultrafine particle exposure and noise to health harms; proponents urged the bill’s accountability timelines and independent assessment. Opponents urged care in designing grant administration and noted potential legal or fiscal constraints under federal aviation rules.

The committee did not vote on the bill during this hearing; staff said fiscal notes and additional language work remain. The committee closed the hearing and indicated further refinement would continue in follow‑up sessions.