TagStantec(30)

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.

This May 2020 report, prepared by Stantec for the Washington State Department of Commerce under legislative authorization ESSB 6032, examines the current and ongoing effects of operating Seattle-Tacoma International Airport (Sea-Tac). It assesses a range of impacts on surrounding communities resulting from airport operations. The study serves as a key resource for policymakers evaluating noise and other environmental effects associated with Sea-Tac's continued operation.

This report examines how Seattle-Tacoma International Airport has affected nearby surface water quality from 1997 to 2019, focusing on streams, wetlands, and stormwater systems that receive runoff from airport property. Researchers analyzed water quality data from multiple airport drainage outfalls — measuring pollutants such as copper, zinc, glycols, and turbidity — using records submitted to Washington State environmental regulators. The study also tracks how major airport developments, including the construction of a third runway, have influenced local waterways like Miller Creek, Walker Creek, and Des Moines Creek.

A comprehensive study examining the current and ongoing effects of Seattle-Tacoma International Airport operations. The study was prepared for the Washington State Department of Commerce as authorized by ESSB 6032 and conducted by Stantec consulting firm.

The Burien Airport Committee held a virtual meeting on May 19, 2020, to discuss airport-related policy matters, including a proposed letter to Port Commissioners about a 'new normal' for airport operations, comments on a Department of Commerce report, and a possible invitation to an FAA Community Ombudsperson. Draft minutes from the April 21, 2020 meeting were also reviewed, covering Chair Tosta's Washington, D.C. visit to advocate for a comprehensive cumulative impact assessment of the Port of Seattle's Sustainable Airport Master Plan (SAMP). The meetings, held via Zoom due to COVID-19 restrictions, reflect ongoing community and city council efforts to address noise and environmental concerns related to Sea-Tac Airport.

In a November 2019 letter to the Washington State Department of Commerce, SeaTac Mayor Erin Sitterley raised concerns about the management of the Seattle-Tacoma International Airport Study, which SeaTac is funding to the tune of $150,000. The city questioned whether consultant Stantec had strayed from the study's original technical scope, flagged potentially wasteful spending on travel from Dallas, and expressed doubt that the study would be completed on time and thoroughly by the June 2020 deadline. The city demanded a full budget accounting and requested that public input be limited until after a draft report was completed and reviewed by the Technical Advisory Committee.

Pg. 44 – authorizing the Stantec 2019 study. # SeaTac Airport Impact Study Funding and Requirements ## (63)(a) Funding Provisions $300,000 of the general fund—state appropriation for fiscal year 2019 and $300,000 of the general fund—local appropriation are provided solely for the department to contract with a consultant to study the current and ongoing impacts