TagCACC(63)

Washington State's Engrossed Substitute House Bill 1791, passed in 2023, establishes a new 19-member Commercial Aviation Work Group to study the state's long-term airport capacity needs, replacing the earlier Commercial Aviation Coordinating Commission. The bill responds to projections that by 2050, demand for flights in the central Puget Sound region will exceed Seattle-Tacoma International Airport's capacity, and directs the group to explore alternatives—including building or expanding other airports. The legislation acknowledges that any new airport site would carry significant environmental, health, and community impacts requiring decisions from federal, state, and local governments.

This document compiles frequently asked questions about Washington State's Commercial Aviation Coordinating Commission (CACC), which is studying potential locations for a new commercial airport in the region. It covers how the Commission was formed, what studies have been used to evaluate possible sites, and how environmental concerns—such as impacts on aquifers, the Nisqually River watershed, and tribal treaty rights—factor into site selection. The CACC can only recommend a site to the State Legislature, which retains final authority over any next steps.

The Washington Aviation System Plan (WASP) Airport Site Selection Study presented findings to the Commercial Aviation Coordinating Commission (CACC) on March 30, 2023, covering a secondary screening analysis and airspace review for potential greenfield airport sites in Washington State. The presentation also included preliminary air cargo forecasts to help evaluate future commercial aviation capacity needs for the region.

This 2023 Washington State House amendment (adopted March 8, 2023) updates the intent statement of SHB 1791 to more specifically acknowledge the environmental, health, social, and economic impacts that a major commercial airport can have on surrounding communities. It references a Puget Sound Regional Council study projecting that by 2050, central Puget Sound will face a significant gap between aviation demand and capacity. The amendment emphasizes that exploring alternatives to Seattle-Tacoma International Airport — potentially including new or expanded airports — is critical to meeting future regional transportation needs.

Washington State House Bill 1791 (2023) establishes a new Commercial Aviation Coordinating Work Group to study the state's long-range aviation needs over the next 20 years, replacing the previous Commercial Aviation Coordinating Commission whose work was disrupted by the COVID-19 pandemic. The 19-member work group, appointed by the governor, will evaluate airport capacity across Washington and assess the potential need for a new commercial airport, taking into account community and environmental impacts. The study is particularly focused on meeting growing aviation demand in western Washington, which has direct implications for how future air traffic and infrastructure decisions may affect communities around Sea-Tac Airport.