Soil is a major element for organisms, as well as for human. Thus, to manage soil contamination, a system based on risk assessment is needed. In 2017, ISO announced an international standard for site-specific soil ecological risk assessment (SERA) based on the TRIAD approach. Based on TRIAD methodology, Korea is developing guidelines for site-specific SERA tailored to domestic conditions. This study aims to provide information for the development of domestic guidelines by analysis of TRIAD case studies. As results of analyses for 19 previous studies, it was found that ecological risks were quantified by integrating chemical, ecotoxicological, and ecological factors as proposed in the TRIAD guidelines, and that diverse analysis items were selected to reflect the characteristics of each site. Some studies excluded ecotoxicological or ecological factors, which was found to increase uncertainty. On the other hand, four studies on Korean TRIAD case studies were identified, all of which were for abandoned mine sites. To extend the applicability of Korean SERA guidelines, it is necessary to evaluate the applicability of TRIAD to contaminated sites with diverse types and uses of contamination.

Keywords: lines of evidence (LoE), Chemistry-LoE, Ecotoxicology-LoE, Ecology-LoE, Integrated risk