Overview
Martin Marietta Materials Inc O'Neal Quarry is a stormwater outfall in Calera, Alabama, USA. It operates under US EPA NPDES MS4 regulations for industrial stormwater discharges.
Martin Marietta Materials Inc O'Neal Quarry is a stormwater outfall located at 3703 Highway 31 North in Calera, Shelby County, Alabama, United States. The facility is operational and classified under NAICS code 212312 (Crushed and Broken Limestone Mining and Quarrying), indicating it manages stormwater runoff from a quarry operation. As a stormwater outfall in the United States, this facility operates under the Clean Water Act and is subject to National Pollutant Discharge Elimination System (NPDES) permit requirements. Industrial stormwater discharges from quarries are regulated under the EPA's Multi-Sector General Permit (MSGP) for industrial activities, which mandates best management practices to control pollutants in runoff. The environmental significance of this outfall lies in its potential to discharge stormwater into local waterways. Quarry operations can generate sediment-laden runoff, and proper management is essential to protect water quality in Shelby County. The facility's compliance with NPDES permit conditions helps mitigate impacts on downstream aquatic ecosystems.
Environmental context
The facility is located in Shelby County, Alabama, an area with karst topography and sensitive groundwater resources. Stormwater runoff from quarry operations can carry sediment and potential pollutants into nearby streams, which may drain into the Coosa River basin. Effective stormwater management is critical to prevent erosion and sedimentation that could impair aquatic habitats and water quality in this region.
Frequently asked questions
The stormwater outfall is located at 3703 Highway 31 North in Calera, Shelby County, Alabama, USA.
It is a stormwater outfall associated with a crushed and broken limestone quarry, classified under NAICS 212312.
The outfall is regulated under the Clean Water Act through the NPDES Multi-Sector General Permit for industrial stormwater discharges.
Stormwater runoff from quarries can carry sediment and pollutants, potentially impacting local water quality and aquatic habitats if not properly managed.
The NPDES Multi-Sector General Permit is a US EPA permit that regulates stormwater discharges from industrial activities, including quarries, to protect water quality.
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