The final report of the working group for forcasted Tokyo Metropolitan Earthquake (as of 19 Dec., 2014) says that the possibilities of Magnitude 7 earthquakes that may occur in Tokyo area would be 70% in 30 years.

The disaster debris disposal system which prioritize recycling is now recognized widely among the experts in national/local government, related academic societies and association.

SHINYEI-OYO can calculate the amount of disaster debris in case huge earthquake occurs, and draw up a disposal plan which prioritize recycling. Also OYO offers a plan to extend life of existing disposal sites, that  includes decontamination and volume reduction for debris.