TagStormwater(385)

This archive documents a long history of water pollution discharged from Seattle-Tacoma (Sea-Tac) Airport into nearby waterways, dating back to 1948. It includes Discharge Monitoring Reports filed by the Port of Seattle showing high concentrations of glycol and other chemicals flowing into local stormwater systems and ultimately Puget Sound, as well as historical letters from the 1950s describing fish kills in Miller Creek and Des Moines Creek caused by airport runoff. The records reveal decades of regulatory correspondence between the Port of Seattle and Washington State pollution authorities over inadequate waste disposal practices.

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 legal brief was filed by Citizens Against Sea-Tac Expansion before the Washington Supreme Court, challenging a decision by the Pollution Control Hearings Board regarding the expansion of Seattle-Tacoma International Airport. The group argues that state regulators improperly allowed the Port of Seattle to rely on future, unwritten stormwater permits as proof that airport runoff would meet water quality standards, and that regulators wrongly pre-authorized pollution mixing zones in nearby waterways without sufficient oversight. The case centers on whether proper environmental protections were in place before approving the airport expansion project.

This document lists 16 permit conditions related to environmental protections at what appears to be a Port development project, showing which conditions were accepted and which were appealed. Conditions covering stormwater management, wetland mitigation, fill criteria, and water quality monitoring were contested, with 8 of the 16 conditions formally appealed. Accepted conditions include stormwater sampling, wetland hydroperiod matching, and long-term contamination monitoring requirements.

This legal brief was filed before Washington State's Pollution Control Hearings Board by community groups challenging a stormwater discharge permit issued to the Port of Seattle for Sea-Tac Airport. The groups argue that Lake Reba, a detention pond on airport property, should be protected as a 'water of the state' and that the permit unlawfully fails to regulate or monitor the airport's industrial stormwater discharges from Lake Reba into Miller Creek. The appellants contend that, unlike other waterways affected by the airport, Lake Reba's discharge point was not even identified as an outfall, leaving it subject to no effluent limits, monitoring, or reporting requirements.

The Port of Seattle filed a pre-hearing brief challenging aspects of a 2003 water pollution permit issued by Washington State's Department of Ecology for Seattle-Tacoma International Airport (Sea-Tac). The permit, considered one of the most stringent stormwater permits in the country, sets numeric water quality limits, requires extensive toxicity testing, and mandates upgrades to the airport's stormwater and wastewater management systems. The brief addresses a range of contested issues, including effluent limits, sampling requirements, and construction stormwater controls.

This document is a draft National Pollutant Discharge Elimination System (NPDES) waste discharge permit issued by the Washington State Department of Ecology to the Port of Seattle for Sea-Tac International Airport. It governs the discharge of treated industrial wastewater into Puget Sound and stormwater runoff into nearby waterways including Des Moines Creek, Miller Creek, and Walker Creek. The permit sets effluent limits, monitoring requirements, and reporting obligations to protect water quality in the receiving waters.

This NPDES permit fact sheet for Seattle-Tacoma International Airport details the locations and receiving waterways for all stormwater and industrial wastewater discharge outfalls at the facility. It covers three categories of discharge: industrial wastewater flowing to Puget Sound, stormwater from industrial activities flowing to local waterways such as Des Moines Creek, Miller Creek, and Northwest Pond, and stormwater from construction activities discharged to Des Moines Creek, Miller Creek, Walker Creek, and Gilliam Creek. The document lists both existing and future planned outfall locations with precise latitude and longitude coordinates for each discharge point.

Capital improvement program budget document for surface water management projects in the City of Burien for 2021-2026. Shows $2.65 million in funding sources and details for 10 specific projects including residential drainage improvements, stormwater projects, and infrastructure repairs.

The City of Burien, Washington's Storm Drainage Master Plan Update (2020) is a technical planning document approved by the Burien City Council on October 19, 2020, outlining the city's stormwater and drainage infrastructure management strategies. Prepared by engineering firm Otak, Inc., the plan was developed in coordination with the city's Public Works Department to guide storm drainage improvements and maintenance. While based in Burien near Sea-Tac Airport, this document focuses on local stormwater systems rather than airport noise policy.