AIR EVAC EMS, INC. BASE 84 Stormwater Outfall, Calhoun County, Arkansas

AIR EVAC EMS, INC. BASE 84 is a stormwater outfall located at 100 Carr Road in Calhoun County, Arkansas, United States. This facility is part of the stormwater management infrastructure serving an emergency medical services base, handling runoff from the site and surrounding areas. As a stormwater outfall in Arkansas, this facility operates under the National Pollutant Discharge Elimination System (NPDES) permitting program administered by the U.S. Environmental Protection Agency and the Arkansas Department of Energy and Environment. Stormwater outfalls like this one are typically regulated under Phase II of the NPDES program, which covers small municipal separate storm sewer systems (MS4s) and industrial facilities. The facility's primary function is to discharge stormwater runoff into receiving waters, with potential impacts on local water quality. The environmental significance of this outfall lies in its role in managing runoff from an EMS facility, which may involve vehicle parking areas and potential contaminants. Proper stormwater management helps protect local waterways from pollutants such as sediment, oil, and grease. The facility's location in Calhoun County, a rural area in southern Arkansas, means it likely discharges to a local stream or river within the Ouachita River basin.

The facility is located in Calhoun County, Arkansas, within the Ouachita River basin. This region experiences a humid subtropical climate with significant rainfall, making stormwater management important for flood control and water quality. The outfall discharges to local waterways that may be sensitive to urban runoff, particularly from impervious surfaces like parking lots. Regulatory oversight under the Clean Water Act and NPDES program ensures that discharges meet water quality standards to protect aquatic ecosystems.