Expert teams have taken hundreds of radiation measurements on many occasions in towns just outside the 20 km exclusion zone around the Fukushima disaster site and in Fukushima City and Koriyama, 60 km from the disaster. Greenpeace monitoring began shortly after the accident on 11 March 2011. The teams have also tested soil, vegetables, seafood, and sediment.
Compilation data of all radiation monitoring to date:
Summary of Field Trips :
October 2012: Fukushima City & Iitate
Greenpeace found that more than 75% of the 40 checked monitoring posts showed lower radiation levels than their immediate surroundings, with levels within 25 metres up to six times higher than at the posts themselves. Also the team found that the cleanup in a trial decontamination area in Iitate has so far been insufficient, with radiation levels up to 5 uSv/h (at 1m) recorded in a residential area.
March 2012: Fukushima City
One year after the Fukushima disaster, Greenpeace found that radioactive contamination is concentrating in many places, creating hotspots that create serious threats to people’s health. For example, the team found hot spots of 70μSv/hr (at 10cm) in a parking garage 50 metres from the central train station, and 40μSv/hr in a water drain next to housing, representing up to 1,000 times normal background levels.
December 2011: Fukushima City
Greenpeace monitored the Watari and Onami neighbourhoods of Fukushima City and found hotspots of up to 37 μSv/hr (at 10cm) in a garden in Watari, and 10.1 μSv/hr in bags of dirt, seemingly abandoned, on a road in Onami.
April 2011: Fukushima prefecture
Less than 4 weeks after the disaster started, Greenpeace measured radiation levels and took samples at various places in Fukushima prefecture. The teams recorded radiation levels in Fukushima City and Koriyama, high enough to expose people to the maximum yearly dose of radiation allowable in a matter of weeks. The teams also found radiation levels above official limits in vegetables. Greenpeace called for full evacuation of several high radiation areas including Iitate and Namie that were later evacuated. We also called for the greater Fukushima area to be given official protective status and for children and pregnant women to be evacuated from high risk areas in Fukushima City and Koriyama.
October 23, 2012