Triple K Mining Pit #2 Stormwater Outfall, Semmes, Alabama

Triple K Mining Pit #2 is a stormwater outfall located at 10550 Howells Ferry Road in Semmes, Mobile County, Alabama. This facility manages stormwater runoff from an industrial mining operation, classified under NAICS code 212321 (Construction Sand and Gravel Mining). As a stormwater outfall, it discharges collected runoff into local waterways, playing a critical role in controlling erosion and preventing flooding in the surrounding area. The facility operates under the regulatory framework of the US Clean Water Act, specifically the National Pollutant Discharge Elimination System (NPDES) program. Stormwater discharges from industrial activities, including mining, are typically regulated under NPDES Multi-Sector General Permits (MSGP) or individual permits. The outfall is designed to manage runoff from the mining pit, with treatment measures such as sedimentation basins or retention ponds to reduce pollutant loads before discharge. Located in Mobile County, Alabama, the facility is situated in a region with a humid subtropical climate, characterized by heavy rainfall and potential for stormwater runoff. The outfall's discharge may affect nearby water bodies, including those in the Mobile Bay watershed. Proper management of stormwater from mining operations is essential to protect water quality and aquatic habitats in this ecologically sensitive area.

The facility is located in Mobile County, Alabama, within the Mobile Bay watershed, a region known for its diverse aquatic ecosystems. Stormwater runoff from industrial mining operations can carry sediments, metals, and other pollutants that may impair water quality. The outfall's discharge is subject to NPDES permit requirements, which mandate best management practices to minimize environmental impact. The local climate, with frequent heavy rainfall, increases the risk of runoff events, making effective stormwater management critical for protecting downstream water bodies.