Lower Monumental PH HVAC System Upgrade

OVERVIEW: The work is located at the Lower Monumental Dam Powerhouse, Kahlotus, Washington. This solicitation is being issued as a Lowest Price Technically Acceptable (LPTA) Request for Proposal (RFP) and will result in a single firm-fixed price construction contract. This procurement is unrestricted. Competition is open to both large and small business concerns. A small business subcontracting plan is required for large businesses. 100% performance and payment bonds are required for this project. The North American Industry Classification System (NAICS) code for this project is 238220 - Plumbing, Heating, and Air-Conditioning Contractors, and the associated small business size standard is $19,000,000. System for Award Management (SAM): Offerors must register in SAM at: https://SAM.gov/content/home prior to receiving an award. SCOPE OF WORK: The work will provide a modernized HVAC system that will ventilate, heat, and cool the spaces in the powerhouse using river water for both heating and cooling sources. The new system must allow for efficient powerhouse pressurization to reduce smoke and dust ingress into the powerhouse, prolonging equipment life for many assets and providing for good indoor air quality for occupants. The occupied spaces must be provided with sufficient ventilation, comfort heating and comfort cooling. The control room and stairwells must be provided with a system that will be capable of pressurizing those spaces with clean outside air for the exclusion of smoke during a fire event anywhere in the powerhouse in addition to providing sufficient ventilation, comfort heating and comfort cooling. Update the HVAC control system to a modern electronic control system which can be operated from the control room to significantly reduce the effort required to operate the system. Provide permanent access platforms for efficient access to system components for maintenance, such as the maintenance of the dampers in the mixed air plenum and replacement of air