90,600 Bq/Kg from an elementary school

From a frost cover in an elementary school they measured 90,600 Bq/kg of cesium.
The school is Suginami ku Horinouchi elementary school.

大きな地図で見る

The sheet was used for frost cover from 3/18/2011 ~ 4/6/2011 and left beside the gym until the beginning of November.

Now it’s kept in a locked room but Suginami ward government is planning to mix it with other garbage and incinerate it.

It was 1.13 microSv/h at 1m away, 3.95 microSv/h at 1cm away.

(Source)