TagDepartment Of Commerce(48)

A 2020 Washington State study, funded by the legislature and six nearby cities with a combined $600,000 budget, examines how Seattle-Tacoma International Airport's operations have historically affected surrounding communities including Burien, Des Moines, Federal Way, Normandy Park, SeaTac, and Tukwila. Unlike a similar 1997 study that projected future impacts from a proposed third runway, this study reviews historical data from 1997 to 2019 to establish a baseline of airport-related impacts across a range of metrics. The study area covers about 61 square miles and is home to over 237,000 residents, a population density roughly 3.3 times greater than the King County average.

This section of a 2020 study examines how the operation of Seattle-Tacoma International Airport affects nighttime light conditions in surrounding communities, using satellite imagery data collected between 1998 and 2018. Researchers analyzed 'skyglow' — light pollution caused by electric fixtures and light reflected off surfaces like roads and parking lots — across the broader Central Puget Sound region. The study notes that nighttime light emission readings can vary by 15–20% due to factors such as weather, seasonal vegetation, and imaging conditions, and it identifies specific light fixture types that contribute most to sky glow.

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.

This 2020 report examines how noise from Seattle-Tacoma International Airport has changed between 1997 and 2019, focusing on the impact of aircraft takeoffs, landings, and overflights on nearby communities. It explains key noise measurement concepts—including decibels, Sound Exposure Level (SEL), and the Day-Night Average Sound Level (DNL)—and notes that while DNL is the federal regulatory standard used by the FAA, individual SEL events are often what residents find most disruptive. The report highlights a growing tension between how federal agencies measure and regulate aircraft noise and the real-world experience of people living under flight paths.

House Bill 2688 proposes changes to Washington State's transportation system policy goals, requiring the Department of Transportation (WSDOT) to evaluate transportation projects submitted to the legislature using updated policy criteria. Multiple state agencies — including the Departments of Commerce, Health, Ecology, and the Interagency Council on Health Disparities — would be required to participate in these project evaluations, along with representatives from vulnerable and highly impacted communities. The fiscal impact on participating agencies is estimated to be non-zero but indeterminate, with the Department of Commerce alone estimating costs of between $21,000 and $35,000 per year.

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.