[en] The purpose of this draft environmental impact statement (DEIS) is to provide information on the potential environmental impacts of managing spent nuclear fuel (SNF) located in the K East (KE) and K West (KW) SNF storage basins at the Hanford Site. These basins are attached to the retired KE and KW Reactors. Approximately 2,100 metric tons (2,315 tons) of SNF are currently located in these two storage basins. The SNF is in the form of metallic uranium, plutonium, and fission products and is, for the most part, fuel from the operation of N Reactor. Small amounts of SNF remain from operation of reactors older than N Reactor. The fuel was never processed to remove uranium and plutonium, and has been stored for periods ranging from 8 to 24 years. Much of the SNF stored in KE Basin is visibly damaged, has deteriorated, and continues to deteriorate. Because the SNF in KW Basin is stored in sealed canisters, its condition is uncertain. The KE and KW Reactors and their associated fuel storage basins were constructed in the early 1950s and are located in the 100-K Area as close as 420 m (1,380 ft) to the Columbia River. The basins are unlined concrete, 4.9-million-L (1.3-million-gal) water pools with an asphaltic membrane beneath each pool. The interior of the KW Basin has been coated with epoxy. The KE Basin has leaked water in the past and may still be leaking small quantities of water contaminated with radionuclides. The K Basins are not suitable for continued long-term storage of SNF. DOE's proposed alternatives include: no action; enhanced K Basin storage; new wet storage; drying/passivation with dry storage; calcination with dry storage; onsite processing; and foreign processing