The southwestern levee section of Storage Pond 3 has experienced significant settlement over the years reducing the mandated 24-inch freeboard to approximately 6-inches. Freeboard is the minimum safe distance between the storage pond water level and the top of levee embankment. The intent of the project is to raise the Storage Pond 3 levee elevation to restore the 24-inch freeboard. The project also includes repairing portions of the levee section repaired in 2003 to address the flood damage to the exterior slope of the embankment and rehabilitation of selected portions of the levee travel way that have experienced localized rutting.
Construction activities for the project will occur within the footprint of the existing pond embankment structures. The project will not increase the capacity or expand the footprint of the treatment ponds. This corresponds to a Class 2 Categorical Exemption, CEQA Guidelines Section 15302(c) - replace or reconstruction of existing utility systems involving negligible or no expansion of capacity.