AASF #1 Stormwater Outfall, Hope Hull, Alabama | United States

AASF #1 is a stormwater outfall facility situated at 4672 Bobby Hogan Drive in Hope Hull, Alabama, within Montgomery County. As a stormwater outfall, it serves as a discharge point for stormwater runoff from the surrounding area, which includes industrial and transportation-related activities given its NAICS code 488119 (Other Airport Operations). The facility is operational and falls under the regulatory jurisdiction of the United States Environmental Protection Agency's National Pollutant Discharge Elimination System (NPDES) Municipal Separate Storm Sewer System (MS4) program. In Alabama, stormwater outfalls like AASF #1 are typically regulated under Phase II MS4 permits for small municipalities, though larger urban areas may be subject to Phase I requirements. The facility's location near an airport suggests its catchment may include impervious surfaces such as runways and parking lots, which can contribute pollutants like sediment, heavy metals, and hydrocarbons to stormwater runoff. Best management practices (BMPs) such as detention basins or filtration systems are commonly employed to mitigate these impacts. The environmental significance of AASF #1 lies in its role in managing stormwater quality and quantity in the Hope Hull area. Proper operation helps prevent flooding and reduces pollutant loads to receiving waters, which may include local streams or rivers that ultimately drain to the Alabama River basin. Compliance with NPDES permit conditions, including monitoring and reporting, is essential for protecting water quality in this region.

The facility is located in Hope Hull, Alabama, within the Alabama River watershed. Stormwater runoff from the surrounding area, which includes airport operations and transportation infrastructure, can carry pollutants such as sediment, oil, grease, and heavy metals. The region experiences a humid subtropical climate with frequent rainfall, increasing the potential for runoff-related water quality impacts. Regulatory oversight under the Clean Water Act and NPDES MS4 permits aims to control these discharges to protect downstream water bodies.