Under NWPA, DOE is required to permanently dispose of spent nuclear fuel (as well as defense HLW) in a deep underground repository, and to take physical control of the waste beginning in 1998.
FORBES: Federal Court Wastes DOE
2.
Although no national repository has been built, one was begun in Yucca Mountain, Nevada, as part of the 1987 Amendment to the NWPA decided by Congress, but strongly opposed by Nevada itself ( The Screw Nevada Bill).