Specifications include, but are not limited to: Construction Manager at Risk services are being requested to provide pre-construction and construction phase services for rehabilitation of Knox Lake Dam, including the principal spillway, embankment and lake drain structure. Knox Lake Dam is a Class I structure owned and operated by the ODNR Division of Wildlife, located approximately 1.5 miles northeast of Fredericktown, Ohio, on the East Branch of North Branch Kokosing River. The impoundment is in Berlin Township, Knox County, and is used for wildlife habitat and recreational purposes. Currently, the structure does not meet established dam safety standards. The project will also include dredging areas of Knox Lake. The work required includes heavy civil construction both on land and in water. Work may include some or all of the following: • Preconstruction services as described below. • Working from barges or other floating plant and equipment. • Construction of cofferdams. • Administration of lake level control plans. • Shallow dredging and dredge material disposal. • Participation in development of construction monitoring and emergency action plans and procurement of materials and equipment as necessary for implementation in the case that emergency action is required during the construction period. • Demolition and modifications to existing concrete spillway structures as well as construction of new spillway structures.