Analysis of uncertainty consideration in environmental assessment: an empirical study of Canadian EA practice

Juliette Lees, Jochen A.G. Jaeger, Jill A.E. Gunn and Bram F. Noble

Journal of Environmental Planning and Management, 2016, vol. 59, issue 11, 2024-2044

Abstract: Identifying and communicating uncertainty is core to effective environmental assessment (EA). This study evaluates the extent to which uncertainties are considered and addressed in Canadian EA practice. We reviewed the environmental protection plans, follow-up programs, and panel reports (where applicable) of 12 EAs between 1995 and 2012. The types of uncertainties and levels of disclosure varied greatly. When uncertainties were acknowledged, practitioners adopted five different approaches to address them. However, uncertainties were never discussed or addressed in depth. We found a lack of suitable terminology and consistency in how uncertainties are disclosed, reflecting the need for explicit guidance, and we present recommendations for improvement. Canadian Environmental Impact Statements are not as transparent with respect to uncertainties as they should be, and uncertainties in EA need to be better considered and communicated.

Date: 2016
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DOI: 10.1080/09640568.2015.1116980

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