YATES CONSTRUCTION CONCRETE PLANT Stormwater Outfall, Calion, Arkansas

YATES CONSTRUCTION CONCRETE PLANT is a stormwater outfall located at 723 MILL ST in Calion, Union County, Arkansas, United States. This facility manages stormwater runoff from a concrete manufacturing site, classified under NAICS 327320 (Ready-Mix Concrete Manufacturing). As a stormwater outfall, it is subject to the US EPA National Pollutant Discharge Elimination System (NPDES) permitting requirements, specifically under the Multi-Sector General Permit (MSGP) for industrial activities. The facility operates within the regulatory framework of the Clean Water Act, which governs stormwater discharges from industrial sites. Concrete plants typically generate stormwater runoff containing sediment, pH-elevated water, and trace metals from cement and aggregate handling. Best management practices (BMPs) such as sediment basins, pH adjustment, and good housekeeping are commonly employed to meet water quality standards. Located in southern Arkansas, the facility's discharge may ultimately reach the Ouachita River basin. The regional climate features heavy rainfall events, increasing the importance of effective stormwater management to prevent erosion and pollutant transport. Compliance with NPDES permit conditions helps protect local water quality and aquatic habitats.

The facility is situated in Union County, Arkansas, within the Ouachita River watershed. The region experiences a humid subtropical climate with frequent thunderstorms and occasional tropical systems, leading to high-intensity rainfall events. Stormwater runoff from concrete plants can carry suspended solids, elevated pH, and trace metals, which may impact receiving waters if not properly managed. The facility's discharge is regulated under the Clean Water Act to prevent degradation of local streams and rivers.