Request for Qualifications, deadline 27/09/2019, for the Pawtucket Tunnel Project, first part of the Phase III of the NBC’s Combined Sewer Overflow (CSO). The project includes ancillary underground features (i.e. drop shafts, launch shaft, receiving shaft, tunnel pump station shaft, adit tunnels) to support the functionality of the tunnel to serve as a CSO storage facility. The Pawtucket Tunnel is a rock tunnel, 140-ft to 180-ft below the ground surface, located north of the BPWWTF from 804 School Street to 660 Roosevelt Avenue in Pawtucket, RI, adjacent to the Blackstone River (see Figure 1). The tunnel is approximately 11,600 feet in length with a 30-foot inside diameter.
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Ref.n. 308.01C. 38/19.
