Why is erosion control important?
Rain events can cause erosion of sediment from ground exposed by grading into local waterways. Sediment is considered a pollutant because the soil increases the amount of turbidity in the nearby creeks and can make the water appear cloudy or muddy. For this reason the Iowa Department of Natural Resources (IDNR) NPDES General Permit No. 2 and the City of Ankeny's Municipal Separate Storm Sewer System (MS4) permit require that all construction activity over one acre develop a Storm Water Pollution Prevention Plan (SWPPP) in order to minimize the amount of erosion coming off each site.
The City of Ankeny is mandated by the MS4 permit to inspect Ankeny construction sites and see that they comply with General Permit No. 2 and other state and local regulations.
Maintaining on-site erosion controls is key in preventing stormwater pollution.
- For construction projects that will disturb one acre or more, please apply for a Construction Site Erosion and Sediment Control (COSESCO) permit. (PDF)
To find the SUDAS specifications, click here.
An informational builder's luncheon was held regarding the erosion control inspection process for new construction on February 23, 2017. A copy of the presentation can be viewed here.