In the area you have selected (Tokyo) volcanic hazard is classified as high according to the information that is currently available. This means that the selected area is located at less than 50 km from a volcano for which a potentially damaging eruption has been recorded in the past 2,000 years and that future damaging eruptions are possible. Based on this information, the impact of volcanic eruption must be considered in all phases of the project, in particular during project design, implementation and maintenance. Further detailed information should be obtained to adequately account for the level of risk posed by individual volcanoes.
For further information the following resources could be consulted: