COALASKA QUALITY ASPHALT PLANT Stormwater Outfall, Anchorage, Alaska

COALASKA QUALITY ASPHALT PLANT is a stormwater outfall located at 240 W 68th Ave, Anchorage, Alaska, within the Anchorage County. This facility handles stormwater runoff from industrial operations including asphalt production (NAICS 212321) and construction activities (NAICS 237310, 237990). As a stormwater outfall in a Phase II MS4 area, it operates under the Clean Water Act and Alaska's NPDES permit program. The facility's stormwater management is subject to EPA's NPDES MS4 permit requirements for small municipalities and industrial sites. Given the industrial catchment (asphalt plant and construction), runoff may contain sediments, hydrocarbons, and other pollutants typical of such operations. Best management practices (BMPs) such as sediment basins, oil-water separators, and regular monitoring are typically employed to control discharges. Located in Anchorage, Alaska's largest city, this outfall discharges into the Cook Inlet watershed, which supports salmon fisheries and other aquatic life. Proper stormwater management is critical to protect water quality in this sensitive subarctic environment. The facility's compliance with NPDES permit conditions helps mitigate impacts on local water bodies.

Anchorage's stormwater outfalls, including this one, discharge into the Cook Inlet watershed, which supports critical salmon habitats and diverse aquatic ecosystems. The subarctic climate with freeze-thaw cycles and snowmelt runoff poses unique challenges for stormwater management. Industrial catchments like asphalt plants can contribute pollutants such as heavy metals, hydrocarbons, and suspended solids, requiring robust BMPs to protect water quality.