The National Pollutant Discharge Elimination System (NPDES) requires that thirty industrial sectors file a permit with the Department of Environmental Protection. Once this permit has been obtained, regular monitoring and reporting needs to be performed at the site year-round. This monitoring checks to make sure areas at your facility that may be exposed to stormwater are sufficiently protected from becoming a source of pollution outside of the area of industrial activity.
In order to be covered by the permit, sites also need to keep a Stormwater Pollution Prevention Plan (SWPPP) book on site. This plan has a complete record of every aspect of the permit and is continuously updated throughout the facility’s lifetime.