Overview
Dillingham Quarry is a stormwater outfall facility located in Dillingham, Alaska, United States. It manages stormwater discharge in an urban catchment under the US EPA NPDES MS4 regulatory framework.
Dillingham Quarry is a stormwater outfall facility situated at 3.9 Mile Aleknagik Road in Dillingham, Alaska, United States. The facility is operational and serves the local community's stormwater management needs within the Dillingham Census Area. As a stormwater outfall, it discharges collected stormwater into receiving waters, playing a critical role in flood control and water quality management. The facility operates under the US EPA National Pollutant Discharge Elimination System (NPDES) Municipal Separate Storm Sewer System (MS4) program, which regulates stormwater discharges from urbanized areas. Dillingham, being a small municipality, likely falls under Phase II MS4 requirements, which mandate stormwater management plans to reduce pollutant discharges to the maximum extent practicable. The facility's design and operation align with typical stormwater outfall practices, including conveyance and treatment of runoff from impervious surfaces. Environmental significance of Dillingham Quarry includes its role in managing stormwater runoff that could otherwise carry pollutants such as sediment, oil, and heavy metals into local water bodies. The facility helps protect downstream aquatic ecosystems and supports compliance with the Clean Water Act. Its location in Alaska's Bristol Bay region underscores the importance of safeguarding pristine waters that support salmon fisheries and other ecological resources.
Environmental context
Dillingham is located in the Bristol Bay region of Alaska, an area known for its pristine watersheds and critical salmon habitat. Stormwater runoff from urban areas can introduce pollutants like sediment, nutrients, and hydrocarbons into receiving waters, potentially impacting aquatic life. The facility's discharge likely enters a water body that may be sensitive to such inputs, making proper stormwater management essential for maintaining water quality and ecosystem health.
Frequently asked questions
Dillingham Quarry is located at 3.9 Mile Aleknagik Road in Dillingham, Alaska, United States.
Dillingham Quarry is a stormwater outfall facility that collects and discharges stormwater runoff from urban areas in Dillingham, Alaska, helping to manage flood risk and protect water quality.
Dillingham Quarry operates under the US EPA NPDES MS4 program, likely as a Phase II small MS4, requiring a stormwater management plan to reduce pollutant discharges.
Stormwater management at Dillingham Quarry reduces flooding risks and prevents pollutants from entering local water bodies, protecting the Bristol Bay watershed and its salmon fisheries.
A stormwater outfall is a point where collected stormwater is discharged into a receiving water body, such as a river or lake, often after some treatment or detention.
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