Journal
ENVIRONMENTAL MANAGEMENT
Volume 44, Issue 5, Pages 952-967Publisher
SPRINGER
DOI: 10.1007/s00267-009-9368-7
Keywords
Site management; Risk assessment; Ranking system; Comparative risk assessment; Fuzzy PROMETHEE
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Funding
- Natural Sciences and Engineering Research Council of Canada (NSERC)
- City of Calgary, Alberta, Canada
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A ranking system for contaminated sites based on comparative risk methodology using fuzzy Preference Ranking Organization METHod for Enrichment Evaluation (PROMETHEE) was developed in this article. It combines the concepts of fuzzy sets to represent uncertain site information with the PROMETHEE, a subgroup of Multi-Criteria Decision Making (MCDM) methods. Criteria are identified based on a combination of the attributes (toxicity, exposure, and receptors) associated with the potential human health and ecological risks posed by contaminated sites, chemical properties, site geology and hydrogeology and contaminant transport phenomena. Original site data are directly used avoiding the subjective assignment of scores to site attributes. When the input data are numeric and crisp the PROMETHEE method can be used. The Fuzzy PROMETHEE method is preferred when substantial uncertainties and subjectivities exist in site information. The PROMETHEE and fuzzy PROMETHEE methods are both used in this research to compare the sites. The case study shows that this methodology provides reasonable results.
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