Storm water discharges are generated by runoff from paved surfaces including streets, parking lots, and other impervious areas (e.g., buildings) during rainfall and snow events, which often contain pollutants in quantities that could adversely affect water quality. Most storm water discharges are considered point sources and therefore require coverage by an NPDES permit. The primary method to control storm water discharges is through the use of best management practices.

Requirements for the storm water control in Arkansas come from three different permits: The Industrial Permit, Construction Permit, and Municipal Separate Storm Sewer System (MS4) Permit. Under the terms of the Federal Clean Water Act and amendments as found in 40 CFR 122.26, operators of a wide range of construction and industrial activities must obtain NPDES permits for non-point source discharges of storm water. Conditions in the permit typically require the creation of a storm water pollution prevention plan (SWPPP), designed to control and reduce pollutants in storm water from these sites.

StormWater Regulations

The Federal Code of Regulations Title 40 – Protection of the Environment, Chapter 1 – Environmental Protection Agency, 40 CFR 122.26:

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