It’s covered with blue sheet. From a distance, it looks like a blue mountain.
It’s refuse incineration ash, which is more than 8,000 Bq/kg.
When they measured 9,740 Bq/kg from refuse incineration ash in late June, Japanese government decided to keep 8,000 ~ 100,000 Bq/kg of refuse incineration ash “temporarily”.
Refuse incineration ash of less than 2,000 Bq/kg is treated as “normal” ash.
Since late September, refuse incineration ash which is more than 8,000 Bq/kg has been increasing again.
Now they are 8~9m wide and 140m long at the moment of 10/11/2011 and it will even grow further.
There is no solution for that.
Because it costs billions of yen to stock them in a shelter, they are left outside.
They are just put on bentonite layer and covered with seepage control sheet.
Stupidly, elementary school and junior high school have their students visit there for field class.
More than 1,500 schools, 60,000 students visit there for no reason.
Before 3/10/2011, you were forbidden to take out 4 Bq/Kg of radioactive material from a lab.
(Source)
(Source)