Benny Darby Sand & Gravel Stormwater Outfall, Sunflower, Alabama

Benny Darby Sand & Gravel is a stormwater outfall located at 142 Webb & Sims Lane in Sunflower, Washington County, Alabama, United States. The facility is operational and classified under NAICS code 212321 (Construction Sand and Gravel Mining), indicating an industrial catchment associated with sand and gravel operations. As a stormwater outfall, it manages runoff from the industrial site, which is subject to regulatory oversight under the Clean Water Act. The facility operates within the regulatory framework of the US EPA's National Pollutant Discharge Elimination System (NPDES) Multi-Sector General Permit (MSGP) for industrial stormwater discharges. This permit requires facilities in the construction sand and gravel mining sector to implement stormwater control measures, develop a Stormwater Pollution Prevention Plan (SWPPP), and monitor discharge quality. The specific permit compliance status and discharge volume for this outfall are not detailed in available data, but typical operations involve managing runoff from stockpiles, vehicle traffic areas, and processing equipment. Environmental significance of this outfall lies in its potential to affect local water quality in the Tombigbee River basin, which receives drainage from the Sunflower area. Industrial stormwater discharges from sand and gravel operations can contain sediment, turbidity, and trace metals. Proper management through best management practices (BMPs) is critical to minimize impacts on downstream aquatic habitats. The facility's location in a rural area of Alabama underscores the importance of erosion and sediment control in maintaining water quality standards.

The Benny Darby Sand & Gravel outfall discharges into a catchment that ultimately drains to the Tombigbee River, a major waterway in Alabama. The region's climate, with heavy rainfall events common in the Gulf Coast area, increases the risk of stormwater runoff carrying sediment and pollutants from industrial activities. The facility's industrial catchment, typical of sand and gravel mining, poses potential risks of elevated turbidity and sedimentation to receiving waters. Regulatory compliance under the NPDES MSGP is essential to mitigate these impacts and protect aquatic ecosystems.