9. Impact assessment on removal of volcanic ash to the sewage system.
… However, in the Metropolitan Area, few countermeasures against disaster caused by volcanic ash have been taken. … We presume the amount of the volcanic ash that flows in sewage system, and the amount would be removed. … As the result of this study, in the Metropolitan Area, if ash fall by eruption of the same scale as the 1707 Eruption of Mt. Fuji should occur, it would be clear that the damage to sewage system is not a negligible. …
Proceedings of the annual conference of the Institute of Social Safety Science (13), 31-34, 2003-11-00
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