A common issue that we see in the field is erosion caused by settling flared end sections (FES’s) at the outlets or inlets to stormwater systems. These sections of concrete pipe are very heavy and over time tend to settle or displace as the foundation underneath them fails to support the pipe. In some cases, the settling causes the two sections of pipe to separate, and stormwater flows out and underneath the FES, which causes erosion and dissipator blowouts.