Repair Marioff High Pressure Mist System at YOSE

The National Park Service is soliciting construction services to repair the Marioff High Pressure Mist System at the Yosemite Valley Museum and District Ranger Office in Mariposa County, California. The project involves replacing critical fire suppression components including the GPU6D/B nitrogen-driven high-pressure fire pump, the TJ4362T nitrogen-driven jockey pump, and all high-pressure rubber flex lines on the nitrogen reserve bank and pump system. Additionally, the contractor must conduct hydro testing and refilling of 24 nitrogen bottles, recertify tanks per industry standards, and perform a complete annual inspection with a detailed California NFPA inspection report. Contractors will be evaluated based on price, technical capability, and past performance, and must be registered in the System for Award Management (SAM). Following two amendments, the final quote submission deadline is September 2, 2025, at 2:00 PM Pacific Time, with a mandatory site visit scheduled that was moved from July 23 to August 13, 2025.

This opportunity is designated as a total small business set-aside under NAICS code 238220 for Plumbing, Heating, and Air-Conditioning Contractors. The contract value is estimated to be between $100,000 and $250,000, structured as a firm-fixed-price agreement. The performance period requires contractors to commence work within 10 calendar days of receiving notice to proceed and complete all work within 120 calendar days, representing a significant extension from the original 30-day completion requirement. The work will be performed at the historic 1924 Yosemite Valley Museum building, which houses valuable collections and administrative offices, with contractors facing logistical challenges due to hauling restrictions that prohibit vehicles over 45 feet and controlled traffic conditions 20 miles east of Mariposa due to ongoing rockslide repairs. The project emphasizes the critical importance of maintaining a fully operational fire suppression system for this culturally significant facility within Yosemite National Park.