Explanation
BACKGROUND: This project will provide extensive rehabilitation of the large gates used to operate the sewer system. These gates are critical for flood protection measures and the control of wastewater flows to the City’s two Waste Water Treatment Plant (WWTP). These gates are well beyond their useful life and inspection shows them to be in poor condition.
The gatehouse facility will also be rehabilitated. Emergency gates to relieve OSIS, regulator gates, and shutoff gates will all be replaced along with all actuators, new electrical, MCC, and PLC. Actuators for the weir at drop shaft 4 will be installed to allow remote control of the weir elevation settings. New flow monitoring equipment will also be installed. A new and larger standby generator will be installed and fuel supply increased to comply with NEC 708. There will be new windows, doors, and HVAC.
This project will abandon the storm tanks at Whittier Street Storm Tanks (WSST). The tanks will be cleaned and pumps will be installed as a temporary measure to prevent nuisance stormwater from collecting in the tanks. The inlets to the tanks from OSIS will be bulk-headed and sealed. The storm overflow channel gates and travelling bridges will be abandoned in place until a future part 2 project is moved forward to completely decommission the tanks.
Community Planning Area: 99 Citywide
PROJECT TIMELINE: Contract work is required to be completed in a manner acceptable to the City within 670 days from the date that a Notice To Proceed (NTP) is given by the City.
PROCUREMENT INFORMATION: The Division advertised for competitive bids submission for the subject services on the City's Vendor Services website and in the City Bulletin in accordance with the overall provisions of Chapter 329 of the Columbus City Code. The Division of Sewerage and Drainage received three (3) bids on September 2, 2020 from the following company:
NAME TAX ID Expiration DAX # City/State Status
Bowen Engineerin...
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