SWISSPORT USA Stormwater Outfall, Anchorage, Alaska | United States

SWISSPORT USA is a stormwater outfall located at 4305 W International Airport in Anchorage, Alaska. This facility manages stormwater runoff from the airport and surrounding industrial areas, discharging into local waterways. As a stormwater outfall, it is part of the municipal separate storm sewer system (MS4) serving the Anchorage Municipality. The facility operates under the regulatory framework of the US Clean Water Act, specifically the National Pollutant Discharge Elimination System (NPDES) MS4 permit program. Alaska's stormwater management is overseen by the Alaska Department of Environmental Conservation, with Phase II MS4 requirements applying to smaller municipalities like Anchorage. The outfall likely handles runoff from impervious surfaces such as runways, parking lots, and buildings, with typical treatment including sedimentation basins or oil-water separators. This outfall plays a key role in protecting local water quality in the Cook Inlet watershed. Stormwater from industrial areas can carry pollutants like heavy metals, hydrocarbons, and sediment. Proper management helps prevent degradation of receiving waters, which support salmon runs and other aquatic life. The facility's location near an international airport adds complexity due to deicing chemicals and fuel spills.

Anchorage's stormwater outfalls discharge into the Cook Inlet watershed, which supports critical salmon habitats and marine ecosystems. The airport area contributes runoff contaminated with deicing fluids, jet fuel, and heavy metals from aircraft and vehicles. Urban and industrial catchments increase pollutant loads, requiring effective best management practices (BMPs) to meet water quality standards under the Clean Water Act.