Z--Golden Gate National Recreation Area - Stabilize A

The Department of the Interior, through the National Park Service DSC Contracting Services Division, issued solicitation 140P2021R0143 for the stabilization and seismic strengthening of the concrete wharf on Alcatraz Island. This project focuses on critical repairs to a contributing feature of the Alcatraz Island National Historic Landmark District originally built in 1939. The scope of work involves repairing historic steel-cased concrete piles, concrete beams, and concrete slabs that are currently in fair to poor condition. To elevate the wharf to a seismic Risk Category III structure, the project includes the installation of two new seismic resisting elements, such as seismic dolphins, and the replacement or repair of piles and gangways. All concrete repairs and seismic improvements are intended to be completed in a single phase of construction. This negotiated solicitation was conducted via full and open competition with an estimated price range exceeding 10 million dollars. The contract structure includes 11 base contract line item numbers and 7 option line item numbers covering various types of concrete and rebar repairs. Key project requirements include adherence to strict environmental regulations, with the National Marine Fisheries Service limiting in-water construction to the period between June 1 and November 30 to protect listed species. The contract also mandates compliance with California wage determinations, federal vaccination certifications for workers, and rigorous historic preservation standards. Performance is subject to liquidated damages of 2,621 dollars per day, and offerors were required to provide detailed project experience and past performance evaluations to ensure technical competency.