[en] This plan proposes construction and operation of the Environmental Restoration Disposal Facility (ERDF) for disposing waste from cleanup of the Hanford Site. The ERDF is proposed to be a single-trench landfill, capable of receiving only Hanford cleanup waste. The landfill would be closed with a protective cap. The ERDF would include roads, vehicles, a decontamination facility, and other facilities to support waste disposal. The cleanup waste may include soil, nibble, or other materials contaminated with hazardous (chemical), low-level radioactive, or mixed (combined hazardous chemical and radioactive) wastes removed from the Hanford Site. This proposed action would initially authorize construction and operation of two landfill cells capable of receiving approximately 1 million cubic yards of cleanup waste removed from along the Columbia River on the Hanford Site