N--Replace Boilers at Beale House located at Adams Na

The National Park Service, Northeast Region, New England Major Acquisition Buying Office, is soliciting proposals under solicitation number 140P4326R0026 for the replacement of existing gas-fired boiler systems at Beale House within Adams National Historical Park in Quincy, Massachusetts. The work requires the complete removal and disposal of the current boiler units and the installation of three new high-efficiency, code-compliant natural gas hot water boilers, along with full reconnection of gas supply, hot water piping, electrical circuits, venting, and control systems. All work must protect the historic fabric of the structure and ensure compatibility with existing mechanical, electrical, and control infrastructure, adhering strictly to National Park Service protocols for work in occupied historic buildings. The contract is a Firm Fixed Price award under a Lowest Price Technically Acceptable source selection process, where proposals must first meet minimum technical acceptability thresholds before price is considered. The total performance period is 200 calendar days, commencing within 14 days of notice to proceed, with a mandatory construction schedule submitted within five days of work start. The requirement is a Total Small Business Set-Aside under NAICS code 238220, and only offerors with an active SAM registration and Unique Entity Identifier are eligible to respond. Proposals must be submitted exclusively via email to Mari Tolleson at mari_tolleson@ios.doi.gov no later than July 8, 2026, at 3:00 PM EDT, with a specific subject line format and each email not exceeding 30 MB. Offerors must submit two electronic volumes: Volume I, the Technical Proposal, including references for at least three completed projects of similar scope within the last five years, and Volume II, the Business and Price Proposal, using the prescribed SF1442 format and Labor Category and Rate Pricing Table. The contract contains stringent compliance requirements including Davis-Bacon prevailing wage rates, Buy American provisions for construction materials, Trafficking Victims Protection Act compliance, personal identity verification of personnel, and a drug-free workplace policy. Performance and payment bonds are required as the work exceeds $150,000, with bond security maintained for one year post-final payment or until warranty obligations end. The Government will conduct inspections throughout performance and retain the right to suspend work at its convenience. Final payment requires submission of a Release of Claims form DI-137, and all invoices must be submitted electronically through the U.S. Internet Payment Platform following approval