Project Clean Lake is the Northeast Ohio Regional Sewer District’s (NEORSD) 25-year program designed to reduce the occurrence of combined sewer overflows into Lake Erie and surrounding waterways. Nicholson has previously been part of the Dugway Storage Tunnel and the Westerly Storage Tunnel.
Nicholson was awarded this most recent contract by the McNally Kiewit SST JV. Work includes the construction of three diaphragm wall access shafts at three different locations along the tunnel alignment to launch and retrieve the tunnel boring machine for the Shoreline Storage Tunnel. The contract also includes three cement bentonite mass treatment break in/break out blocks for the tunnel boring machine and two soldier pile reinforced cement bentonite walls to be used as support of excavation systems for two near-surface structures.
Nicholson’s portion of the work have just started and will last for about a year.
This new project is helping to build environmentally friendly facilities. This infrastructure will strengthen the state’s sanitation system. Project Clean Lake is slated to be completed in 2036.