Nobuyuki Uematsu*, Yasunao Misaka**, Takashi Nakamura*** and Kazuo Touge****

* Nippon Steel Corporation Senior Manager of Environmental System Div.
** Kurita Water Industries Ltd. Senior Technical Counselor
*** Hitachi Metals, Ltd. General Manager of Plant & Equipment Div.
**** Obayashi Corporation Senior Manager of Socioscience Project Department

+ Correspondence should be addressed to Nobuyuki Uematsu:
(2-6-3 Otemachi, Chiyoda, Tokyo 100-71 Japan)

Abstract

In the U.S. where soil and groundwater contamination is a serious problem, more than 70% of the remediation is in the form of permanent clean-up for cost-benefit consideration and innovative dedicated technologies with good cost performance are being developed. In Japan, the state of applications for remediation technologies have not yet been objectively confirmed because of the limited number of contamination cases to have surfaced. However, most of the remediation measures which have been published are containment-related. This paper introduces relevant technical trends in Japan, referring also to overseas situations. It outlines Japanese and imported remediation technologies from the users' viewpoint, classified by objectives, subject media and pollutants. Also, assuming respective contamination sites by volatile chlorinated organic compounds, heavy metals and PCB, it introduces remediation costs integrated from a series of case studies ranging from survey to clean-up. These were obtained through the activities of the Japan Forum for Soil Environmental Remediation.

Key words: SITE program, contaminated soil, clean-up, innovative technology, remediation costs