Soil Survey of Watari District, Fukushima City Shows 5 Times Cesium Concentration in One Location

compared to the survey done in June.

From Professor Tomoya Yamauchi's survey result dated October 5, 2011, as published by the "FoE Japan":

Survey results 計測結果

(1) Ogura-ji Inariyama 小倉寺稲荷山
Cs-134: 604.66 eV; 108,450 +/- 247 Bq/kg
Cs-137: 661.64 eV; 131,250 +/- 282 Bq/kg
Total 総計：239,700 +/- 375 Bq/kg

(2) Hachiman Jinja 八幡神社
Cs-134: 604.66 eV; 71,293 +/- 171 Bq/kg
Cs-137: 661.64 eV; 85,981 +/- 198 Bq/kg
Total 総計：157,274 +/- 262 Bq/kg

(3) Storm drain on the school route 通学路西側住宅雨水枡
Cs-134: 604.66 eV; 44,294 +/- 135 Bq/kg
Cs-137: 661.64 eV; 54,010 +/- 156 Bq/kg
Total 総計：98,304 +/- 206 Bq/kg

(4) drain in Yakushi-cho 薬師町内の溝
Cs-134 604.66 eV; 137,490 +/- 236 Bq/kg
Cs-137 661.64 eV; 170,075 +/- 274 Bq/kg
Total 総計：307,565 +/- 361 Bq/kg

(5) backyard of a residence in Yakushi-cho 薬師町内民家の庭
Cs-134: 604.66 eV; 17,532 +/- 91 Bq/kg
Cs-137: 661.64 eV; 20,932 +/- 104 Bq/kg
Total 総計：38,464 +/- 138 Bq/kg

The location (1) is the one whose cesium concentration in the soil quintupled from the measurement in June of 46,540 Bq/kg of radioactive cesium.

The location (2) is right next to a nursery school with small children.

Professor Yamauchi's conclusion:

地域全体が非常に高いレベルで汚染している。側溝の泥を取除く程度の除染では線量は下がらない。各住宅や空き地の表土とともに、アスファルトやコンクリート、コンクリート塀、屋根も除去の対象にしなければ線量は下がらないと見られる。

The entire district is highly contaminated. The radiation level will not go down with decontamination that only involves removing the sludge from the drains. In addition to removing the top soil at houses and empty lots, asphalt, concrete, concrete fences and roofs would have to be removed in order to lower the radiation level.

The national government did survey the district, but managed to miss high radiation locations. It did only the air radiation survey, which does not necessarily reflect the contamination level of the ground.

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