BLUF: The Department of Energy's Hanford tank farms management contract with Washington River Protection Solutions LLC has obligated $10,560,504,771.54 to date, according to federal award data.

The definitive contract, award number DEAC2708RV14800, was signed on May 29, 2008, and covers management of the Hanford Site tank farms — the underground storage system holding radioactive and chemical waste from decades of plutonium production in Washington state. The award's base-and-all-options ceiling stands at approximately $11.31 billion, meaning the contract has now obligated more than 93% of its total potential value.

Why it matters: Hanford tank farm management remains one of the largest environmental remediation efforts funded by the federal government, and this contract is a recurring line item for DOE's Office of Environmental Management. For contractors and subcontractors in the nuclear cleanup and hazardous waste space, the contract's continued obligation activity — most recently updated August 7, 2026 — signals sustained federal spending in this niche even as the base period of performance has lapsed. The award was competed under full and open competition with three offers received, illustrating that even complex, long-duration environmental contracts of this size draw multiple bidders.

By the numbers:

• Cumulative obligations: $10,560,504,771.54
• Base and all options value: $11,310,353,939.10
• Awarding agency: Department of Energy
• NAICS code: 562211 (Hazardous Waste Treatment and Disposal)
• Product/service code: M300 (Operation of Government Restoration)
• Contract signed: May 29, 2008
• Set-aside: None (full and open competition, 3 offers received)

The contract's period of performance, per USAspending.gov, ran from June 20, 2008 through February 23, 2025, though obligation data continues to be updated as the government reconciles final costs and options on the award. No new set-aside or small-business provisions apply — the award was made under full and open competition.

Source: USAspending.gov