This 2009 fact sheet from Washington State's Department of Ecology documents the proposed National Pollutant Discharge Elimination System (NPDES) permit for Seattle-Tacoma International Airport, outlining where and how the airport is allowed to discharge industrial wastewater and stormwater into nearby water bodies, including Puget Sound, Miller Creek, Lake Reba, and Des Moines Creek. The permit sets limits on the types and amounts of pollutants the airport may release, based on available treatment technology and the health of the receiving waters. It also details the public comment process and the airport's plans to modify or eliminate certain discharge outfalls as part of ongoing construction projects, including a third runway expansion.Open full document
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This fact sheet documents the decisions made by the Washington State Department of Ecology in drafting the NPDES permit for the Port of Seattle’s Seattle-Tacoma International Airport. It details discharge locations for industrial wastewater and stormwater associated with industrial and construction activities, including outfall coordinates and receiving water bodies such as Puget Sound, Miller Creek, Lake Reba, and Des Moines Creek. The document also outlines the public comment process and Ecology’s responsibilities under Washington Administrative Code.