1. 1) Ministry of Economy, Trade and Industry; Areas to which evacuation orders have been issued (April 1, 2017) (2017). Available at: http://www.meti.go.jp/earthquake/nuclear/kinkyu/hinanshiji/2017/pdf/0401gainenzu.pdf, Accessed 19 July, 2018 (in Japanese).
2. 2) Nuclear Emergency Response Headquarters; Basic Concept and Issues to be Challenged for Rearranging the Restricted Areas and Areas to which Evacuation Orders Have been Issued where Step 2 has been Completed (2011). Available at: http://www.meti.go.jp/english/earthquake/nuclear/roadmap/pdf/20111226_01.pdf, Accessed 19 July 2018.
3. 3) Ministry of the Environment; Progress on Decontamination & Interim Storage Facility (2014). Available at: http://www. mofa.go.jp/files/000051402.pdf, Accessed 19 July 2018.
4. 4) H. YOSHIDA-OHUCHI, T. KANAGAMI, Y. SATOH, M. HOSODA, Y. NAITOH and M. KAMEYAMA; Indoor radiocaesium contamination in residential houses within evacuation areas after the Fukushima nuclear accident. Sci. Rep., 6, Article number: 26412 (2016).
5. 5) Japanese Industrial Standards Committee; Evaluation of surface contamination Beta-emitters (maximum beta energy greater than 0.15 MeV) and alpha-emitters. JIS Z 4504 (2008) (in Japanese).