Overview
ANNISTON METROPOLITAN AIRPORT is an operational stormwater outfall in Anniston, Alabama, managing runoff from airport facilities under US EPA NPDES MS4 regulations.
ANNISTON METROPOLITAN AIRPORT is a stormwater outfall located in Anniston, Calhoun County, Alabama, United States. As an airport facility, it manages stormwater runoff from impervious surfaces such as runways, taxiways, and parking areas. The outfall operates under the National Pollutant Discharge Elimination System (NPDES) Municipal Separate Storm Sewer System (MS4) permit framework, which regulates discharges to waters of the United States. Stormwater outfalls at airports typically handle runoff from deicing operations, fuel storage areas, and vehicle maintenance zones, which may contain pollutants like glycols, hydrocarbons, and heavy metals. The facility's NAICS code (488119) indicates it is classified under Other Airport Operations, aligning with standard industrial stormwater management practices. In Alabama, stormwater permits are administered by the Alabama Department of Environmental Management (ADEM) under delegated authority from the U.S. Environmental Protection Agency (EPA). The outfall serves the Anniston Metropolitan Airport, a public-use airport supporting general aviation and limited commercial service. Effective stormwater management at this facility helps protect local water bodies, including nearby Choccolocco Creek, from potential contamination. Compliance with NPDES permit conditions, including stormwater pollution prevention plans (SWPPPs) and regular monitoring, is essential for minimizing environmental impact.
Environmental context
The Anniston Metropolitan Airport stormwater outfall discharges into the Coosa River basin, which supports diverse aquatic ecosystems and provides drinking water for downstream communities. The region experiences a humid subtropical climate with frequent thunderstorms, leading to high runoff volumes. Airport operations pose risks of pollutant loading from deicing fluids, fuel spills, and sediment runoff. Regulatory oversight under the Clean Water Act and Alabama's NPDES program requires best management practices (BMPs) such as detention basins, oil-water separators, and regular outfall monitoring to protect water quality.
Frequently asked questions
ANNISTON METROPOLITAN AIRPORT is located in Anniston, Calhoun County, Alabama, United States, at coordinates 33.591778, -85.847222.
It is a stormwater outfall that manages runoff from the Anniston Metropolitan Airport, including deicing operations, fuel storage, and vehicle maintenance areas, under an NPDES MS4 permit.
Common pollutants include deicing fluids (glycols), hydrocarbons from fuel spills, heavy metals from aircraft maintenance, and sediment from construction or erosion.
Stormwater outfalls in Alabama are regulated under the Clean Water Act through NPDES MS4 permits, administered by the Alabama Department of Environmental Management (ADEM).
Best management practices such as detention basins, oil-water separators, and regular monitoring reduce pollutant loads, protecting downstream waters like Choccolocco Creek and the Coosa River.
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