HOBBS ISLAND SAND AND GRAVEL Stormwater Outfall, Huntsville, Alabama

HOBBS ISLAND SAND AND GRAVEL is a stormwater outfall located in Huntsville, Madison County, Alabama, United States. The facility is associated with a sand and gravel mining operation (NAICS 212321) and manages stormwater runoff from the industrial site. As a stormwater outfall, it discharges collected runoff into local receiving waters, operating under the regulatory framework of the US Clean Water Act and the Alabama Department of Environmental Management's NPDES MS4 permit program. The facility's technical specifications are limited, but as an industrial stormwater outfall, it likely includes best management practices such as sediment basins, silt fences, or detention ponds to control erosion and sedimentation. The site is in an urbanizing area near Huntsville, which may influence runoff characteristics. Regulatory compliance typically involves monitoring for pollutants like total suspended solids and pH, with reporting to the state environmental agency. Environmental significance includes potential impacts on nearby water bodies, such as the Tennessee River or its tributaries. The sand and gravel industry can generate high sediment loads, making stormwater management critical for protecting aquatic habitats. The facility's location in a growing metropolitan area underscores the importance of effective stormwater control to mitigate flooding and water quality degradation.

The outfall is in the Tennessee Valley region, characterized by clay soils and rolling hills that can generate significant runoff during heavy rains. The area's rapid urbanization increases impervious surfaces, potentially exacerbating stormwater volume and pollutant loads. Discharge from industrial sites like sand and gravel operations can introduce sediment, metals, and other contaminants into local streams, affecting water quality and aquatic life.