TagStormwater(64)

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.

The City of Des Moines 2015 Surface Water Comprehensive Plan is a technical planning document prepared by Parametrix engineers in March 2015 for the City of Des Moines, Washington. It addresses the management and infrastructure of the city's surface water systems, covering stormwater and drainage planning for the community. The plan was certified by licensed professional engineers and serves as a long-term guide for surface water improvements in the Des Moines area.

In January 2010, the Port of Seattle sought approval to advertise construction bids for environmental cleanup work tied to the Seattle-Tacoma International Airport Third Runway project, including removing the 160th Street box culvert, restoring Miller Creek, and converting temporary stormwater ponds into permanent detention facilities. The estimated $6.6 million project was already funded within the previously approved Third Runway budget through Passenger Facility Charges and bond proceeds, requiring no new funding authorization. The work was required to fulfill federal and state permit conditions before the overall Third Runway project could be formally closed out.