Overview
The ALASKA RAILROAD CORPORATION WHITTIER YARD is an operational stormwater outfall in Whittier, Alaska, managed under the US EPA NPDES MS4 permit framework.
The ALASKA RAILROAD CORPORATION WHITTIER YARD is a stormwater outfall located in Whittier, Alaska, within Valdez-Cordova County. This facility manages stormwater runoff from a railroad yard, operating under the regulatory oversight of the US EPA's National Pollutant Discharge Elimination System (NPDES) Municipal Separate Storm Sewer System (MS4) permits. As a stormwater outfall in a cold climate, it addresses unique challenges related to snowmelt and frozen ground conditions. While specific technical specifications such as discharge volume are not detailed, the facility is part of a broader network of stormwater controls required for industrial sites under the Clean Water Act. In Alaska, stormwater management often incorporates best management practices (BMPs) like sedimentation basins and oil-water separators to mitigate pollutants from transportation infrastructure. The facility's location in a coastal area with high precipitation necessitates robust erosion and sediment control measures. The environmental significance of this outfall lies in its role in protecting nearby water bodies, including the Passage Canal and Prince William Sound, from contaminated runoff. As a railroad yard, potential pollutants include heavy metals, hydrocarbons, and sediments. Effective stormwater management here supports the ecological health of Alaska's sensitive marine ecosystems and complies with federal water quality standards.
Environmental context
Whittier, Alaska, experiences a subarctic maritime climate with heavy precipitation and snowmelt, creating significant stormwater runoff challenges. The outfall discharges into the Passage Canal, part of Prince William Sound, a region known for its rich marine biodiversity. Runoff from the railroad yard may contain pollutants such as oil, grease, and heavy metals, which could impact water quality. The facility operates under the US EPA NPDES MS4 framework, requiring stormwater pollution prevention plans (SWPPPs) to mitigate these risks.
Frequently asked questions
The facility is located in Whittier, Alaska, at ARRC Milepost F0.0, within Valdez-Cordova County.
It manages stormwater runoff from the Alaska Railroad Corporation's Whittier Yard, discharging treated runoff into local waterways under NPDES MS4 permit requirements.
Common pollutants include heavy metals, hydrocarbons, sediments, and de-icing chemicals, which are managed through best management practices like oil-water separators and sedimentation basins.
It operates under the US Clean Water Act and EPA's NPDES MS4 program, requiring a stormwater pollution prevention plan (SWPPP) and regular monitoring.
Cold temperatures and snowmelt create unique challenges, including frozen ground reducing infiltration and spring thaw causing high runoff volumes, requiring specialized BMPs.
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