Dublin Road Water Plant Raw Water Intake Improvements

The Dublin Road Water Plant Raw Water Intake Improvements project called for Kokosing to complete upgrades of the plant’s existing raw water intake system and low-head dam.

The intake improvements focused on Kokosing improving the facility’s debris removal and flow-control systems. Utilizing divers, Kokosing installed new water intake screens to work in conjunction with the new gripper rake mechanical cleaning system. The result is an intake system that virtually eliminates the need for plant personnel to have to remove river debris from the screens. Along with modifying the new sluice gate stems, guides and electric actuators, Kokosing constructed a massive concrete retaining wall to facilitate the mounting of the gripper rake system’s monorail and supports. Kokosing also installed a new leaf chute to remove debris from the traveling water screens.

The low-head dam portion of the project required Kokosing to construct and pour a concrete overlay, which included 1,500 cubic yards (CY) of concrete, 350,000 pounds of permanent sheet piling and more than 70 CY of injected grout for stabilization of the dam’s foundation.

The nearly $5.2-million project also included Kokosing performing miscellaneous site improvements, such as electrical upgrades, river dredging, paving and improved pedestrian access.