THIS IS A SOURCES SOUGHT NOTICE ONLY. THIS IS NOT A REQUEST FOR PROPOSAL, REQUEST FOR QUOTE, OR INVITATION FOR BID. THERE WILL NOT BE A SOLICITATION, SPECIFICATIONS OR DRAWINGS AVAILABLE AT THIS TIME. The intent of this notice is to conduct market research to determine if sources capable of satisfying this agency's requirements exist. The Naval Facilities Engineering Systems Command, Mid-Atlantic is seeking eligible small business firms capable of performing construction services for Design-Bid-Build (DBB) Phase III Groundwater Treatment Plant (GWTP), NWIRP Bethpage, Wantagh, New York. All service-disabled veteran-owned small businesses (SDVOSB), certified HUB-Zone, certified 8(a), women-owned small businesses (WOSB), and small businesses are encouraged to respond. Upon review of industry responses to this Sources Sought Notice, the Government will determine whether set-aside procurement in lieu of full and open competition is in the Government's best interest. Large business submittals will not be considered. The Government is not obligated to and will not pay for any information received from potential sources as a result of this synopsis. The information provided in this notice is subject to change and in no way binds the Government to solicit for or award a contract. No drawings or specifications will be made available at this time. The Government will not provide debriefs on the results of this research, but feedback regarding the decision to set aside or not set aside the procurement will be accomplished via presolicitation synopsis or solicitation for these services, as applicable. All information submitted will be held in a confidential manner and will only be used for the purpose intended. General Work Requirements: The project will be prepared in one package, under one contract. PHASE III GWTP, NWIRP BETHPAGE, WANTAGH, NEW YORK This Design-Bid-Build project aims to address a plume of contaminated groundwater that has spread south from the former NWIRP and Northrop Grumman properties. This contamination, primarily consisting of chlorinated VOCs (like TCE) and 1,4-dioxane, is being remediated as required by the Navy and the New York State Department of Environmental Conservation. The core of this phase is the construction of a new Groundwater Treatment Plant (GWTP) designed to intercept the leading edge of the plume. The plant will treat the captured water to meet drinking water standards using a process that includes sand filters, an Advanced Oxidation Process (AOP), and Granular Activated Carbon (GAC). The scope of work involves the complete construction and commissioning of the facility. This includes completing three groundwater recovery wells and the associated underground piping to bring contaminated water to the plant. The facility itself will house numerous systems, including large storage tanks, multiple filter types, the AOP system, and granular activated carbon units. The project also covers the construction of two new buildings for the treatment plant and offices, along with all necessary structural, electrical, and plumbing infrastructure. The work includes: buried piping systems, pavements, and miscellaneous items; one underground vault; piping, valves, fittings for three recovery wells and wiring, instruments, and equipment within the conduit, manholes, and vaults; three Reinforced Plastic (FRP) vertical storage tanks; one glass fused Backwash waste steel tank; three Multimedia Vertical Pressure Filters (MMF) unit vessels, two Horizontal Cartridge Filters, one Ozone-Hydrogen Peroxide Advance Oxidation Process (AOP) system; three Liquid Phase Granular Activated Carbon (LGAC) unit vessels; eight pumps with piping, valves, supports and appurtenances; two blowers; chemical feed systems for Sodium Hydroxide, Sodium Hypochlorite and Hydrogen Peroxide; two buildings (treatment plant and office), foundations, and interior/exterior concrete slabs on grade and under-slab utility coordination; structural and architectural roof and systems; one 1200A, 277/480V, 3-phase, 3-Wire Service; an MCC for motor VFDs; heating, ventilation, and air conditioning (HVAC); a PLC and SCADA system, and internet/cellular gateway to enable off-site Phase III System process parameters; earthwork, including pad excavation and site re-grading; site utilities; fencing; and a fire protection system. In accordance with DFARS 236.204(ii), the magnitude of construction for this project is between $25,000,000 and $100,000,000. This is a new procurement. It does not replace an existing contract. No prior contract information exists. The anticipated award of this contract is September 2026. The North American Industry Classification System (NAICS) Code for this project is 237110, Water and Sewer Line and Related Structures Construction, with a small business size standard of $45,000,000. The procurement method to be utilized is Federal Acquisition Regulation (FAR) Part 15, Contracting by Negotiation.