TagEcology(797)

This document is an NPDES (National Pollutant Discharge Elimination System) permit fact sheet for Sea-Tac International Airport, issued by the Washington State Department of Ecology. It details the locations of numerous water discharge outfalls across the airport property, covering industrial wastewater, stormwater from industrial activities, and stormwater from construction activities. The discharges flow into several local waterways including Des Moines Creek, Miller Creek, Walker Creek, Gilliam Creek, and Puget Sound.

This document explains the regulatory approval process required for filling wetlands as part of Sea-Tac Airport's third runway expansion, which requires both a federal permit under Section 404 of the Clean Water Act and a state certificate under Section 401. The Port of Seattle filed its third application in October 2000 after two previous attempts failed, facing significant environmental obstacles including contaminated fill material, threats to stream flow and salmon habitat, destruction of nearly 20 acres of wetlands, flooding risks, embankment stability concerns in an earthquake-prone area, and existing pollution levels that already exceed allowable limits. The U.S. Army Corps of Engineers must also weigh the public need for the project against these environmental harms, raising broader questions about whether the expansion is justified at all.

This document explains the Washington State Department of Ecology's review process for Sea-Tac Airport's applications to fill wetlands as part of its third runway project. Sea-Tac submitted three separate applications between 1996 and 2000, with the third ultimately receiving a Section 401 water-quality certificate that was later put on hold after the Airport Communities Coalition appealed. The Pollution Control Hearings Board identified three key concerns driving the stay: contaminated fill material, insufficient water rights for dry-season stream flow, and inadequate wetlands mitigation plans.

Washington State's Engrossed Second Substitute Senate Bill 5141, signed into law in May 2021, aims to reduce environmental and health disparities by implementing recommendations from the state's Environmental Justice Task Force. The law requires covered state agencies—including the departments of ecology, health, transportation, and others—to address the disproportionate environmental burdens faced by low-income communities and communities of color. It establishes an Environmental Justice Council and directs state programs to prioritize benefits for communities with the greatest environmental and health burdens.

Washington State Senate Bill 5141 requires several state agencies, including the departments of Ecology, Health, Transportation, and others, to incorporate environmental justice principles into their planning and decision-making processes. The bill mandates that these agencies complete environmental justice assessments for significant actions, create community engagement plans for overburdened communities, and consult with Indian tribes on decisions affecting tribal lands. An environmental justice council would be established to oversee implementation, and the Department of Health would maintain an environmental health disparities map tracking conditions across Washington communities.