30 million Bq/m3 measured in Ohkuma machi

 

Last June and July, Ministry of Education, Culture, Sports, Science and Technology measured cesium contained in the ground soil at 2,200 locations in Fukushima, the highest reading was 29.46 million Bq/m2 in Ohkuma machi Fukushima.

Additionally, foresty agency measured cesium contained in the soil and dead leaves at 391 locations in the forests of Fukushima. As the result published on 3/1/2012, the highest reading was 8.56 million Bq/m2 in Irikitazawa Namiemachi. They measured higher readings in North west to Fukushima plants.

They try to explain fallen leaves and branches are more contaminated than ground soil.

Source

落ち葉に高濃度セシウム 森林土壌の測定結果公表

林野庁は1日、福島県内の森林391地点で実施した落ち葉や土壌の放射性セシウム濃度の測定結果を公表した。最も濃度が高かったのは、浪江町入北沢の1平方メートル当たり856万ベクレル。同町や双葉町など、東京電力福島第1原発から北西方向の地域で高濃度のセシウムが検出され、地面に落ちた葉や枝の方が土壌より濃度が高い傾向が見られた。

環境省によると、これまで河川など水源の調査では、セシウムはほとんど検出されていない。豪雨などで落ち葉や土壌が流出した場合は汚染が拡大する恐れもあるが、通常の雨や雪解け水は地中にしみこむため、落ち葉などに付着したセシウムは流出しにくいという。

林野庁は住宅地などとの境目に近い森林の除染対策は示してきたが、全体の除染は手付かずになっている。落ち葉や土壌の流出を防ぐ柵の設置や、間伐などによる除染の効果を検証しており、4月をめどに結果をまとめる方針だ。

土壌の放射性セシウム濃度では、文部科学省が昨年約2200地点で実施した調査で、最大2946万ベクレル(福島県大熊町)が検出されている。

(2012年3月 1日)

 

 

About this site

This website updates the latest news about the Fukushima nuclear plant and also archives the past news from 2011. Because it's always updated and added live, articles, categories and the tags are not necessarily fitted in the latest format.
I am the writer of this website. About page remains in 2014. This is because my memory about 311 was clearer than now, 2023, and I think it can have a historical value. Now I'm living in Romania with 3 cats as an independent data scientist.
Actually, nothing has progressed in the plant since 2011. We still don't even know what is going on inside. They must keep cooling the crippled reactors by water, but additionally groundwater keeps flowing into the reactor buildings from the broken parts. This is why highly contaminated water is always produced more than it can circulate. Tepco is planning to officially discharge this water to the Pacific but Tritium is still remaining in it. They dilute this with seawater so that it is legally safe, but scientifically the same amount of radioactive tritium is contained. They say it is safe to discharge, but none of them have drunk it.

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