Progressive erosion has occurred along the Chehalis River riverbank at the location of the City of Elma's wastewater treatment plant outfall (WWTP outfall).  Approximately 12 to 15 feet of horizontal erosion has occurred, removing a significant amount of dirt and rocks away from the buried portion of the outfall pipe and undermining/jeopardizing its flood stability.  The City of Elma is proactively planning with this project to relocate the existing WWTP piping further into the remaining riverbank to prevent further erosion. Flood Hazard Reduction Benefits -- Failure (or loss) of the WWTP outfall and piping from a future flood event would certainly result in costly environmental and reconstruction issues.