A1 Auto Parts & Sales Facility 2 Stormwater Outfall, Semmes, Alabama

A1 Auto Parts & Sales Facility 2 is a stormwater outfall located at 2410 Alta Fescue Dr., Semmes, Alabama, in Mobile County. This facility manages stormwater runoff from an automotive parts sales operation, classified under NAICS 423140. As a stormwater outfall, it discharges collected runoff into local waterways, subject to regulatory oversight under the US Clean Water Act. The facility operates under the National Pollutant Discharge Elimination System (NPDES) Municipal Separate Storm Sewer System (MS4) permit framework. In Alabama, the Alabama Department of Environmental Management (ADEM) administers these permits. The outfall is part of a small MS4 system, typical for commercial facilities in suburban areas. Stormwater management includes controls for pollutants such as sediment, oil, grease, and heavy metals common in automotive sales and service areas. Environmental significance lies in its role in managing urban runoff quality and quantity. Discharges from this outfall may affect local water bodies in the Mobile Bay watershed. Proper operation helps prevent flooding and reduces pollutant loads to streams, supporting water quality goals under the Clean Water Act. The facility contributes to community resilience by managing stormwater from a commercial property.

The facility is located in Semmes, Alabama, within the Mobile Bay watershed. This region experiences a humid subtropical climate with frequent heavy rainfall, making stormwater management critical for flood control and water quality. Urban runoff from commercial areas can carry pollutants such as oil, grease, metals, and sediment, which may impair local streams and ultimately Mobile Bay. Regulatory oversight under the Clean Water Act and ADEM MS4 permits aims to mitigate these impacts through best management practices.