SOURCE: Tokyo Metropolitan Government Measures Soil Contamination in Shinjuku, EX-SKF, October 7, 2011
[...] according to the just released Ministry of Education’s aerial survey [...] most of Tokyo has less than 10,000 becquerels/square meter of radioactive cesium, with the exception of the western-most Okutama and the eastern special wards (“ku”) [...]
the Tokyo Metropolitan government [...] was doing its annual survey of soil contamination in Shinjuku and quietly released the data on September 20.
The soil sample was taken at Tokyo Metropolitan Institute of Public Health in Hyakunin-cho, Shinjuku-ku [...] from the surface to 5 centimeters deep [...]:
- Iodine-131: ND
- Cesium-134: 360 becquerels/kg
- Cesium-137: 430 becquerels/kg
- Total cesium: 790 becquerels/kg
To convert from “per kilogram” to “per square meter”, Japan’s Nuclear Safety Commission uses the factor of 65. The total cesium per square meter in Shinjuku therefore is: 51,350 becquerels per square meter.
Published: October 8th, 2011 at 8:47 am ET