LIGON AIR, LLC Stormwater Outfall in Birmingham, Alabama

LIGON AIR, LLC is a stormwater outfall located at 5109 East Lake Boulevard, Hangar 26, Gate 74, in Birmingham, Jefferson County, Alabama. The facility operates within the United States and is subject to federal stormwater regulations under the Clean Water Act and the EPA's NPDES MS4 permit program. As a stormwater outfall associated with an aviation support operation (NAICS 488119), it manages runoff from industrial and airport-related activities. The facility's stormwater management is governed by Phase II MS4 requirements, which apply to small municipalities and industrial sites in urbanized areas like Birmingham. The outfall likely includes best management practices (BMPs) such as detention basins or filtration systems to control pollutants before discharge. The regulatory framework emphasizes compliance with water quality standards for receiving waters, which in this region may include tributaries of the Black Warrior River or the Cahaba River. Environmental significance lies in its role in mitigating urban and industrial runoff impacts on local water bodies. Birmingham's industrial history and urban density contribute to potential stormwater contaminants like heavy metals, hydrocarbons, and sediment. Proper operation of this outfall helps protect downstream ecosystems and supports community water quality goals under the Clean Water Act.

Birmingham, Alabama, has a humid subtropical climate with frequent thunderstorms, leading to significant stormwater runoff. The area's industrial legacy and urban development increase the risk of pollutants such as sediment, oil, and heavy metals entering waterways. The facility's discharge likely flows to the Black Warrior River basin, which supports diverse aquatic life and is used for recreation and drinking water. Effective stormwater management is critical to prevent impairment of these water bodies.