BP Gas to Liquids Plant Stormwater Outfall, Kenai, Alaska

BP Gas to Liquids Plant is a stormwater outfall located at 47560 Kenai Spur Highway in Kenai, Alaska, within Kenai Peninsula County. The facility is operational and serves an industrial site classified under NAICS code 211112 (Natural Gas Liquid Extraction). As a stormwater outfall, it discharges runoff from the plant's catchment area, which includes process areas and infrastructure associated with gas-to-liquids operations. The facility operates under the regulatory framework of the US Clean Water Act, specifically the National Pollutant Discharge Elimination System (NPDES) for stormwater discharges. Given its location in Alaska, it may be subject to Phase II MS4 requirements if located in a regulated urbanized area, or it may have an individual industrial stormwater permit. This outfall is significant as it manages stormwater from an industrial gas-to-liquids plant, which involves handling hydrocarbons and other potential pollutants. Proper stormwater management is critical to protect nearby water bodies, including the Cook Inlet watershed. The facility's location in a cold climate with seasonal snowmelt adds complexity to runoff management, requiring best management practices for erosion control and pollutant prevention.

The facility is located in Kenai, Alaska, on the Kenai Peninsula near the Cook Inlet, a large tidal estuary that supports diverse marine life including salmon, beluga whales, and seabirds. The region experiences a subarctic climate with significant snowfall and spring melt, which can increase stormwater runoff volumes and pollutant loads. Industrial activities at the gas-to-liquids plant may introduce hydrocarbons, heavy metals, and other contaminants to runoff, necessitating effective stormwater treatment and monitoring to protect the sensitive aquatic ecosystem.