Montgomery Outer Loop Pit Stormwater Outfall, Montgomery, Alabama

Montgomery Outer Loop Pit is a stormwater outfall facility located in Montgomery, Alabama, United States. It serves as a discharge point for stormwater runoff in the Montgomery area, operating under the regulatory framework of the US Clean Water Act and the EPA's NPDES MS4 permit program. As a stormwater outfall, this facility is part of the municipal separate storm sewer system (MS4) that manages runoff from urban and industrial areas. The facility's NAICS code 212399 indicates a connection to nonmetallic mineral mining, suggesting the pit may have originated from mining activities and now functions as a stormwater detention or retention structure. The facility plays a role in controlling stormwater discharge to local water bodies, helping to mitigate flooding and reduce pollutant loads. Its location near Highway 80 east of Chantilly Road places it in a mixed urban and industrial catchment area, typical of stormwater outfalls in the region.

The Montgomery Outer Loop Pit discharges stormwater into local waterways that are part of the Alabama River basin. Urban and industrial runoff in the Montgomery area can carry pollutants such as sediment, heavy metals, and nutrients, which may impact water quality. The facility operates under an NPDES MS4 permit, which requires implementation of best management practices to reduce pollutant loads and protect receiving waters.