TagPuget Sound(125)

This document is Part 4 of a Master Plan study for Sea-Tac International Airport, focusing on trends and forecasts for the Central Puget Sound Region. It examines population and economic growth data to project future air traffic demand, noting that the four-county area around Seattle held over 1.9 million people in 1970—56% of Washington State's population. While the region grew rapidly through the 1950s and 1960s, the plan anticipates more modest growth in the 1970s relative to national averages.

The Puget Sound Clean Air Agency's 'State of the Airshed' report reviews progress on the agency's 2014 Strategic Plan, which aimed to protect public health, improve neighborhood air quality, and reduce the region's contribution to climate change across King, Kitsap, Pierce, and Snohomish counties. The report examines how the agency met or fell short of its goals amid regional growth and challenges such as wildfire smoke and the COVID-19 pandemic. Note: This document focuses on air quality and does not contain information related to Sea-Tac Airport noise policy.

The Puget Sound Regional Council (PSRC) 2022 Annual Report highlights key regional planning achievements, including the opening of the Northgate Link Light Rail Extension, the adoption of the region's first Regional Housing Strategy, and updates to the Regional Transportation Plan. The report also notes the passage of the federal Bipartisan Infrastructure Law and Washington State's Move Ahead transportation package, which together provide historic funding for transit, roads, bridges, and ferries. While focused broadly on regional growth and transportation planning for the central Puget Sound area, this document does not address Sea-Tac Airport noise policy specifically.

This 2021 annual review by the Washington State Department of Health assesses water quality and shellfish harvesting conditions in Poverty Bay, located near Des Moines and Federal Way. The area holds a mix of Approved, Conditionally Approved, and Prohibited classifications, with most stations meeting bacteriological standards, though Station 701 and Station 720 raised concerns due to elevated fecal coliform levels. Pollution sources such as stormwater runoff and past sanitary sewer overflows continue to be monitored, with ongoing correction efforts supported by Public Health Seattle-King County grant funding.

A November 2021 WSDOT presentation outlines the SR 509 Completion Project, part of the broader Puget Sound Gateway Program, which aims to build new highway connections linking the region's ports and distribution centers between 2020 and 2028. The project includes several construction stages covering new expressway segments, interchange improvements at I-5/SR 516, and a Lake to Sound Trail component in the area south of Seattle near Sea-Tac Airport.

Washington State's E2SSB 5141, enacted in 2021, requires key state agencies including Transportation and Ecology to incorporate environmental justice principles into their planning and decision-making processes, with a focus on protecting overburdened communities from disproportionate environmental and health harms. Agencies must develop community engagement plans by 2022, environmental justice implementation plans by 2023, and conduct formal environmental justice assessments for significant actions such as new rules, grants, and capital investments. Note: this legislation addresses statewide environmental justice policy broadly and does not specifically address Sea-Tac Airport noise issues.

The Washington State Department of Transportation (WSDOT) presented the Puget Sound Gateway Program to the Highline Forum in November 2020, outlining plans to complete SR 509 in King County and SR 167 in Pierce County. The SR 509 project includes creating a new south access point to Sea-Tac Airport, improving freight connections to the ports of Seattle and Tacoma, and reducing congestion on local roads. The program also proposes tolling as a tool for sustainable congestion management.

The Regional Aviation Baseline Study, published October 24, 2019 by the Puget Sound Regional Council, examines the roles and interactions of 29 airports across the central Puget Sound region, including Sea-Tac, Boeing Field, and Tacoma Narrows. The study aims to provide a regional perspective on how aviation activities affect communities and the broader economy, while gathering stakeholder input on aviation and airspace constraints. Its findings are intended to identify future aviation needs and inform long-term regional planning efforts.