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
- Japan gov’t finds 165 locations over wide area with cesium-137 exceeding Chernobyl evacuation levels — Data shows radiation could be “spreading to other areas” August 30, 2011
- Japan Times: Cesium levels spiking with unusually high amount of fallout in Okutama, Tokyo up to 300,000 Bq/m² — Home to World’s largest drinking water reservoir of its kind, built to supply Tokyo October 9, 2011
- Jiji: High radiation levels near Tokyo linked to Fukushima — Rain caused 29,250,000 Bq/m² in soil says gov’t — Almost DOUBLE last gov’t test November 28, 2011
- WSJ: Tokyo-area officials say park has radiation levels 5 times higher than previously detected in city October 14, 2011
- Report from Tokyo: 6.5 microSv/h at Japan’s busiest train station — Equal to 57 millisieverts per year, 10 times Chernobyl evacuation levels — Near Imperial Palace (PHOTOS) February 25, 2012