The Environment Ministry plans to decide around 2030 or later where to finally dispose of soil removed from the ground during decontamination work after the March 2011 disaster at Tokyo Electric Power Company Holdings' Fukushima No.1 nuclear power plant, it was learned Wednesday.
The plan was included in a draft timetable for the final disposal of such soil outside Fukushima Prefecture by March 2045, presented by the ministry at a meeting of a related expert panel on the day. The ministry will consider a process for selecting final disposal sites from fiscal 2025.
As of the end of December, about 14 million cubic meters of such soil had been transported to an interim storage facility straddling the Fukushima towns of Okuma and Futaba.
Three-quarters of the soil had radiation concentrations of 8,000 becquerels per kilogram or less and will be reused in public works, while the rest will be subject to final disposal.
Final disposal sites are estimated to require up to 50 hectares if the volume of the soil is not reduced, or 2 to 3 hectares if the volume is reduced. Meanwhile, radiation levels would be higher in the reduced soil.
The government is slated to draw up a basic plan as early as this spring for reusing some of the soil and finally disposing of the rest.
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