Risk Management of BTEX Contamination in Ground Water—An Integrated Fuzzy Approach
Article first published online: 4 JUL 2008
© 2008 The Author(s) Journal compilation © 2008 National Ground Water Association
Volume 46, Issue 5, pages 755–767, September–October 2008
How to Cite
Qin, X. S., Huang, G. H. and Li, Y. P. (2008), Risk Management of BTEX Contamination in Ground Water—An Integrated Fuzzy Approach. Ground Water, 46: 755–767. doi: 10.1111/j.1745-6584.2008.00464.x
- Issue published online: 25 AUG 2008
- Article first published online: 4 JUL 2008
- Received September 2007, accepted April 2008.
An integrated fuzzy simulation-assessment method (FSAM) was developed for assessing environmental risks from petroleum hydrocarbon contamination in ground water. In the FSAM, techniques of fuzzy simulation and fuzzy risk assessment were coupled into a general framework to reflect a variety of system uncertainties. A petroleum-contaminated site located in western Canada was selected as a study case for demonstrating applicability of the proposed method. The risk assessment results demonstrated that system uncertainties would significantly impact expressions of risk-level outputs. A relatively deterministic expression of the risks would have clearer representations of the study problem but may miss valuable uncertain information; conversely, an assessment under vaguer system conditions would help reveal potential consequences of adverse effects but would suffer from a higher degree of fuzziness in presenting the modeling outputs. Based on the risk assessment results, a decision analysis procedure was used to calculate a general risk index (GRI) to help identify proper responsive actions. The proposed method was useful for evaluating risks within a system containing multiple factors with complicated uncertainties and interactions and providing support for identifying proper site management strategies.