– Cesium-134/137 level spiked in 21 elementary school ground soil in Kamakura in 2013 (Fukushima Diary, Feb 3, 2014):
Cesium-134/137 density spiked up in 13 of 16 elementary school ground soil of Kamakura in 2013.
In these 16 schools, Cesium-134/137 density was lower than detectable level in 2012, however it jumped up in 13 schools in 2013. The highest reading was 137 Bq/Kg in total of Cesium-134/137. This is 1.3 times much as the food safety limit.
The measurement time was in August in both of the years. The cause is not known and Kamakura municipal government has made no announcement either.
Additionally, Cesium-134/137 was measured in 8 more schools that they didn’t take the samples of in 2012. Among those schools, the highest reading was 156 Bq/Kg in total of Cesium-134/137.
http://www.city.kamakura.kanagawa.jp/kyoplan/syoutyuu_housyasen_tuti.html