TWIN CITIES READY MIX Stormwater Outfall, Fort Smith, Arkansas | United States

TWIN CITIES READY MIX is a stormwater outfall located at 808 Old Highway 271 South in Fort Smith, Sebastian County, Arkansas, United States. This facility manages stormwater runoff from an industrial ready-mix concrete operation, a sector known for potential sediment and pH impacts. The outfall is part of the broader stormwater management infrastructure serving the Fort Smith area. As a stormwater outfall in the United States, this facility operates under the regulatory framework of the Clean Water Act, specifically the EPA's NPDES MS4 permit program. Fort Smith, as an urbanized area, is likely subject to Phase II MS4 requirements, which mandate stormwater management programs to reduce pollutant discharges. Industrial facilities like ready-mix plants often require additional stormwater pollution prevention plans (SWPPPs) to address site-specific risks. The environmental significance of this outfall lies in its role in conveying stormwater from an industrial catchment to local waterways. Proper management is critical to prevent contamination of receiving waters, particularly given the potential for concrete-related pollutants such as high pH and suspended solids. The facility's operational status indicates ongoing compliance with regulatory standards to protect water quality in the Arkansas River basin.

The Fort Smith area lies within the Arkansas River watershed, which supports diverse aquatic ecosystems and is used for recreation and water supply. Stormwater runoff from industrial sites like ready-mix concrete facilities can introduce pollutants such as sediment, elevated pH, and heavy metals. Effective management through NPDES-permitted outfalls is essential to mitigate impacts on downstream water quality and aquatic habitats.