The Department of Energy's Hanford Site tank farms management contract with Washington River Protection Solutions LLC has obligated $10,560,504,771.54 to date, per USAspending.gov. The definitive contract, signed May 29, 2008, carries a base-and-all-options ceiling of roughly $11.31 billion.
Bechtel National, Inc. holds a Department of Energy contract at the Hanford Site in Richland, Washington that has reached $17.32 billion in cumulative obligations against an $18.92 billion ceiling, according to USASpending.gov records. The definitive contract was originally signed in December 2000 and runs through April 2027.