Harwood’s Mill Dam Improvement Project

The project consists of the demolition of the existing spillway chute, outlet works, and settling basins and other structures associated with a decommissioned water treatment plant formerly located at the project site. The project also includes the construction of a new spillway floor slab, training walls, intake structure and flume, access bridge, concrete crest wall, and the rehabilitation of the existing spillway weir. All new concrete structures except the concrete crest wall along the crest of the embankment section will be supported on auger-cast piles installed using the displacement method. Some major features of work include erosion and sediment controls, cofferdam design and installation for diversion and control of reservoir discharges during construction, and dewatering of deep excavations. The Owner intends to award a single contract for all work required on the project.

Dam/Tunnel, New Construction.

Division 02 -	Existing Conditions, Subsurface Investigation.
Division 31 -	Earthwork, Site Clearing, Grading, Excavation and Fill, Subgrade Preparation, Excavation, Shoring, Tunneling and Mining, Tunnel Excavation.
Division 35 -	Waterway and Marine Construction, Dam Construction and Equipment.