Tuscaloosa Regional Airport-RWY 04 Localizer and MALSR Stormwater Outfall, Tuscaloosa, Alabama

Tuscaloosa Regional Airport-RWY 04 Localizer and MALSR is a stormwater outfall located at 7601 Robert Cardinal Airport Road in Tuscaloosa, Alabama. This facility manages stormwater runoff from airport navigational aids and associated infrastructure, operating under the regulatory framework of the US Clean Water Act and EPA's NPDES MS4 permit system. As a stormwater outfall serving an airport catchment, the facility handles runoff from impervious surfaces such as runways, taxiways, and parking areas. The operational status is active, and the facility is classified under NAICS codes 237310 (Highway, Street, and Bridge Construction) and 488119 (Other Airport Operations), reflecting its role in transportation infrastructure drainage. The outfall discharges into local waterways in the Tuscaloosa area, which may include the Black Warrior River watershed. Proper management of stormwater from airport facilities is critical to prevent pollutant loading from deicing agents, fuel residues, and sediment. The facility's compliance with NPDES permit conditions helps protect downstream water quality and aquatic habitats.

The outfall is located in Tuscaloosa, Alabama, within the Black Warrior River watershed. The region experiences a humid subtropical climate with frequent heavy rainfall, increasing the risk of stormwater runoff carrying pollutants from airport operations. Potential contaminants include deicing fluids, petroleum hydrocarbons, and sediment. The facility must comply with NPDES MS4 permit requirements to minimize impacts on receiving waters, which support diverse aquatic life and recreational uses.