This pre-solicitation synopsis covers Design-Bid-Build Phase III construction and commissioning of a new Groundwater Treatment Plant at NWIRP Bethpage in Wantagh, New York, to treat contaminated groundwater using sand filters, AOP, and GAC. The scope includes three recovery wells and underground piping, treatment systems and tanks/filters/AOP/GAC, pumps, chemical feed, two buildings, site work, utilities, electrical/SCADA, HVAC, fencing, and fire protection. The contract is unrestricted/full-and-open competition using a best-value tradeoff evaluation, and large businesses must submit a subcontracting plan before award. The construction magnitude is between $25,000,000 and $100,000,000, with completion 1,095 calendar days after award and anticipated award in March 2027. The RFP is expected on or about December 3, 2026, and offerors must have active SAM registration.