NOTE: This notice replaces Pre-solicitation Notice W50S8526BA002. The work shall be in strict compliance with the SOW, the project specifications, and the project drawings. Sections of the SOW may supersede the requirements found in the specifications, in which case, the more stringent/higher quality requirements will apply. The contractor shall schedule and perform a construction task for the replacement of the existing heating boiler systems and Roof Top Units (RTU) in Building 164 at the Selfridge Air National Guard Base, Harrison Twp. MI. The Contractor will provide complete and operable boiler and RTU systems at Building 164.