MOBIS US ALABAMA, LLC Stormwater Outfall, McCalla, Alabama | USA

MOBIS US ALABAMA, LLC is a stormwater outfall located at 6600 Jefferson Metro Pkwy in McCalla, Jefferson County, Alabama. The facility manages stormwater runoff from an automotive manufacturing site (NAICS 336110) and operates under the US EPA National Pollutant Discharge Elimination System (NPDES) Municipal Separate Storm Sewer System (MS4) permit framework. As a Phase II small MS4, it is subject to requirements for stormwater management plans, best management practices, and monitoring to reduce pollutant discharges. The facility's stormwater outfall discharges into local water bodies within the Black Warrior River watershed. Alabama's stormwater regulations are administered by the Alabama Department of Environmental Management (ADEM), which implements the NPDES program. The outfall likely serves an industrial catchment with impervious surfaces typical of automotive manufacturing, requiring treatment measures such as sediment basins, oil-water separators, or detention ponds to control runoff quality and quantity. Environmental significance includes potential impacts on receiving waters from industrial stormwater runoff, which may contain pollutants like heavy metals, oils, and sediments. The facility's compliance with its NPDES permit is critical for protecting downstream aquatic ecosystems. As part of the broader Jefferson County stormwater network, this outfall contributes to community flood control and water quality management in the Birmingham metropolitan area.

The facility is located in the Black Warrior River watershed, which drains into the Mobile Bay estuary. Stormwater runoff from industrial sites in this region can carry pollutants such as heavy metals, hydrocarbons, and sediment, potentially impacting aquatic habitats and drinking water sources. Alabama's humid subtropical climate with frequent thunderstorms increases runoff volumes, making effective stormwater management essential for flood control and water quality protection.