Erosion control on construction sites is important because rain events can cause erosion of sediment exposed by grading into local waterways.
Sediment is considered a pollutant because the soil increases the amount of turbidity in the nearby creeks and makes the water appear cloudy or muddy.
For this reason, the ND Department of Health and the City of Bismarck require all construction activity over one acre to develop a Storm Water Pollution Prevention Plan (SWPPP) in order to minimize the amount of erosion coming off of each site.
The City of Bismarck is mandated by the MS4 to inspect construction sites and see that they comply with regulations. Maintaining the on-site erosion controls is key in establishing effective erosion control.