Two years an half after the Fukushima Daiichi nuclear disaster it is predicted that Tamura City will be the first city where the evacuation order is released. Decontamination under the direct control of government ended within 20km zone of Tamura city in June 2013, and it is decided to conduct a post-monitoring and consideration of re-decontamination based on the post-monitoring results by local government and country with the cooperation.