82623B0083-BEDC - KENS-EAST-1 Tunnel, Shafts & Kensico Rock Excavation

This contract involves comprehensive site preparation and extensive underground construction work for the Kensico-Eastview project managed by the NYC Department of Environmental Protection. Key activities include the removal of an existing soil pile, excavation and construction of deep rock tunnels such as the Kensico-Eastview Connection, Downtake Shaft 1C, and Vent Structure Uptake Shaft 2C, which includes a sump pit and unwatering casing. Additional work encompasses the excavation of the Screen Chamber, portions of the UEC connecting Tunnel, Dike Grade Return Tunnel, and the connection tunnel to the downtake shaft. The project also involves supporting excavation efforts, installing trailers and contractor parking facilities with a new entrance off Walker Road, as well as milling and paving Walker Road. Bidders are required to submit responses through NYC’s PASSPort online portal by June 27, 2024, with a mandatory paper submission of the bid form and security at the specified Flushing address by 10 AM on the response deadline. The contract, with an estimated value ranging from $50 million to $150 million, is designated under NAICS code 238910, indicating specialized underground construction services. The project emphasizes large-scale excavation, tunnel boring, shaft construction, and site infrastructure development, demanding experienced contractors capable of managing complex underground and surface operations within the specified scope and timeline.