The Department of the Interior, through the National Park Service, is soliciting proposals for the maintenance of wash rack equipment at Fort Cronkhite, located within the Golden Gate National Recreation Area in Marin County, California. The project involves the removal, replacement, and reinstallation of industrial water treatment equipment, including biosorb and filtration systems, as well as the replacement of damaged flooring with marine-grade materials and the application of protective coatings. This maintenance work is crucial for ensuring the operational integrity and safety of the facility, adhering to federal safety and environmental standards. Interested small businesses must submit their quotations by 1:00 PM PDT on March 26, 2025, following a mandatory site visit on March 12, 2025. The estimated contract value ranges from $25,000 to $100,000, and inquiries can be directed to Patty Payne at Patty_Payne@nps.gov or by phone at 559-730-6435.