Gilbert Generating Station
The client is the owner of a former coal-fired electric generating station on the eastern bank of the Delaware River. The plant was constructed in the 1920s and decommissioned in the 1970s. Flyash from the plant was disposed on site, including an approximate 200 foot length along the river. The face of the ash deposit was sloped at about 1H:1V and was severely eroded at many points along the toe of slope. KEY performed a geotechnical investigation to obtain samples of the embankment material for laboratory testing, performed slope stability analyses to determine the maximum slope at which an acceptable factor of safety against sliding could be achieved, and then prepared a complete set of permit and construction drawings.
KEY prepared applications and submitted them to the New Jersey DEP to obtain a Division of Land Use Regulation Permit and Flood Hazard Area Permit. This included preparation of a Mitigation Plan to replace trees and vegetation within the riparian zone that would be impacted during construction. KEY designed a slope stabilization system consisting of turf reinforcement matting and vegetation, including live stake plantings.
KEY provided Quality Control/Quality Assurance oversight services during the construction phase of the project.