Overview
Dillingham Airport-Delta Western Operations is a stormwater outfall in Dillingham, Alaska, managing runoff from an airport and industrial area. It operates under the US EPA NPDES MS4 permit framework.
Dillingham Airport-Delta Western Operations is a stormwater outfall located at 640 Airport Road in Dillingham, Alaska. This facility manages stormwater runoff from the airport and associated industrial operations, serving as a key component of local drainage infrastructure in the Dillingham Census Area. As a stormwater outfall in the United States, this facility operates under the Clean Water Act and is subject to National Pollutant Discharge Elimination System (NPDES) regulations. Depending on the municipality's designation, it may fall under Phase I or Phase II MS4 permit requirements, which mandate stormwater management plans to control pollution from urban and industrial runoff. The environmental significance of this outfall lies in its discharge to local water bodies, which are part of Alaska's sensitive aquatic ecosystems. Proper management of stormwater from airport and industrial areas is critical to prevent contamination from pollutants such as oil, grease, and heavy metals, protecting downstream habitats and community water resources.
Environmental context
Dillingham is located in southwestern Alaska, near the Nushagak River and Bristol Bay, an area known for its rich salmon fisheries and pristine ecosystems. Stormwater runoff from airport and industrial facilities can carry pollutants like petroleum hydrocarbons and sediment, posing risks to aquatic life. The facility's discharge must comply with water quality standards to protect these valuable resources.
Frequently asked questions
The facility is located at 640 Airport Road in Dillingham, Alaska, within the Dillingham Census Area.
It manages stormwater runoff from the Dillingham Airport and adjacent industrial operations, discharging treated or untreated runoff into local waterways under NPDES permit requirements.
As a US facility, it is regulated under the Clean Water Act through the NPDES MS4 permit program, which requires stormwater management plans to reduce pollutant discharges.
Common pollutants include oil, grease, de-icing chemicals, heavy metals, and sediment, which can harm aquatic ecosystems if not properly managed.
By controlling runoff from industrial areas, stormwater outfalls help prevent contamination of nearby rivers and bays, supporting the health of salmon fisheries and local water quality.
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