City adds scanning system to combat rain-dependent infiltration

Problem: Oregon receives 2.8 inches more rainfall than the national average. As a result, rain-dependent infiltration (RDI) is an issue for cities such as Coos Bay, which receives between 60 and 80 inches of rain per year. RDI can be difficult to locate using visual methods, since in dry weather a defect may not be actively leaking, so it may not be seen. Meanwhile, in wet weather, there may be too much water...