During the 1970s and 1980s, about 65,000 cubic meters of reinsurance waste was sent to the Idaho National Engineering and Environmental Laboratory (INEEL) for temporary storage. In 1982, the definition of transuranic waste changed and, as a result, 25,400 cubic meters of this waste was reclassified as mixed low-level waste. At that time, mixed low-level waste was considered "orphan waste" since it had no identified path for disposal.
