Description
The Iowa Department of Natural Resources is seeking bids for the Harmon Tunnel Highwall (Bluff) Scaling project at Pammel State Park in Madison County. The project involves the removal of loose or potentially unstable disjointed spalled/exfoliated bedrock fragments and talus above/around both tunnel portal highwalls by manual, mechanical, or chemical (non-explosive) methods. The contractor will be responsible for removing and disposing of all spoil resulting from the highwall scaling operation and all loose material located in the area between the 'zone of influence' and the tunnel pavement.
Key aspects of the project include:
• The contractor must have performed satisfactory work on three similar projects within the last five years.
• All personnel must have a minimum of two years of full-time experience in rock slope stabilization that includes rock scaling.
• The contractor will be required to furnish all materials, equipment, labor, insurance, and other accessories and services necessary to complete the project in a workmanlike manner.
• The project must be completed by November 30, 2026.
• The contractor will be paid on a unit price basis, with the unit prices stated in the proposal form.