Abstract
Currently in Japan, there is a critical need for appropriate disposal management of vast amounts of disaster waste generated by the Great East Japan Earthquake that occurred on March 11, 2011. As matters now stand, although waste is being collected from across the devastated areas of eastern Japan and moved to primary and secondary provisional waste yards, sufficient practical waste disposal work is still not being carried out and it is necessary to propose waste disposal guidelines for speedy rehabilitation and reconstruction. In this study, we quantified the environmental impact with respect to the tsunami debris generated by the Great East Japan Earthquake (the quantified environmental impact is defined as the severity of environmental impact) and further, by incorporating a timescale, we discussed appropriate disposal flow from both the enviro-economic and time-axis viewpoints. As a result, we conclude that promotion of broad-based disposal and waste reuse is important from the comprehensive aspect of environmental impact and time.
