Construction Overview
Stormwater discharges from construction activities can significantly impact water quality. As stormwater flows over a construction site, it can pick up pollutants like sediment, debris, and chemicals and transport them to nearby storm sewer systems or directly into rivers, lakes, or coastal waters.
The NPDES stormwater program requires permits for discharges from construction activities that disturb one or more acres, and discharges from smaller sites that are part of a larger common plan of development or sale. Construction stormwater permits include effluent limits for erosion and sediment control, pollution prevention, and site stabilization from the Construction and Development Effluent Guidelines and Standards regulations.
Depending on the location of the construction site, either the state (if it has been authorized to implement the NPDES stormwater program) or EPA will administer the permit. In areas where EPA is the permitting authority, operators of regulated construction sites are generally permitted under EPA’s 2012 Construction General Permit (CGP).
- Authorization Status for EPA’s Construction and Industrial Stormwater Programs – Visit this page to find out whether EPA or your state is the permitting authority for industrial activities.
http://www.epa.gov/npdes/stormwater-discharges-construction-activities#overview