Overview
Pegasus Aviation Services, LLC operates a stormwater outfall in Anchorage, Alaska, managing runoff from an industrial aviation facility under the US EPA NPDES MS4 permit framework.
Pegasus Aviation Services, LLC manages a stormwater outfall located at 3901 Old International Airport Rd in Anchorage, Alaska. The facility serves an industrial aviation site within the Anchorage Municipality, handling stormwater runoff from aircraft maintenance and ground operations. As a stormwater outfall, it is subject to the US EPA's National Pollutant Discharge Elimination System (NPDES) regulations, specifically under the Clean Water Act's Municipal Separate Storm Sewer System (MS4) permit program for industrial activities. The facility operates in a region with a subarctic climate, where snowmelt and rainfall contribute to seasonal runoff patterns. Stormwater management at this site likely includes best management practices such as sediment basins, oil-water separators, and regular monitoring to prevent pollutants like de-icing fluids, fuels, and heavy metals from entering local waterways. The outfall discharges into the Cook Inlet watershed, a sensitive estuarine environment supporting salmon and other aquatic species. Environmental significance stems from the facility's location near the Anchorage International Airport and its proximity to receiving waters. Compliance with NPDES permit conditions is critical to minimize impacts on water quality. The facility's role in managing industrial stormwater aligns with broader efforts to protect Alaska's water resources under the Clean Water Act, emphasizing the importance of proper runoff control in cold-climate industrial settings.
Environmental context
The facility discharges into the Cook Inlet watershed, a dynamic estuarine system that supports critical salmon runs and marine habitats. Anchorage's subarctic climate results in prolonged snow cover and rapid spring melt, which can concentrate pollutants in stormwater runoff. Industrial activities at the aviation site, including aircraft de-icing and fueling, pose risks of glycol and hydrocarbon contamination. Effective stormwater management is essential to protect water quality in this ecologically sensitive region.
Frequently asked questions
The outfall is located at 3901 Old International Airport Rd in Anchorage, Alaska, within the Anchorage Municipality.
It is a stormwater outfall managing runoff from an industrial aviation facility, including aircraft maintenance and ground operations.
The outfall is regulated under the US EPA's NPDES MS4 permit program for industrial stormwater discharges, as part of the Clean Water Act.
Common pollutants include de-icing fluids (glycols), fuels, oils, heavy metals, and sediment from aircraft and ground operations.
The subarctic climate leads to snow accumulation and rapid spring melt, requiring management of high seasonal flows and pollutant loads from de-icing activities.
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