Proposition d'un outil d'évaluation de la performance globale de pratiques de gestion optimales basé sur la méthode multicritère d'aide à la décision AHP

The implementation of best management practices (BMPs) and their studies have led to a better understanding of how they work and, as a result, to improved techniques for evaluating their performance. However, the literature does not provide a method for evaluating the overall performance of a BMP, but rather methods for evaluating a BMP under several criteria. Therefore, this thesis focuses on the implementation of a tool to evaluate the overall performance of one or more BMPs. After consideration, it was decided that the calculation tool would be based on the Analytical Hierarchy Process (AHP) method, a multi-criteria decision aid (MCDA). This method makes it easy to incorporate different weights for each of the criteria for evaluating overall performance. However, it is mainly its simple execution that was the decisive point in the choice of the method. In addition, the use of the AHP method allows for the integration of sub-criteria into the overall performance evaluation. Finally, the calculation tool can evaluate several BMPs at the same time. In order to demonstrate the applicability of the tool to assess the overall performance of BMPs, a case study is presented. The case study covers a vegetated retention basin and bioretention basin project located on Papineau Avenue in Montreal, Quebec, Canada. In the case study, the performance evaluation criteria were their capacity to retain rainfall of less than 19 mm, their capacity to control runoff water so that contaminant concentrations at the outlet of the basins respect the permitted thresholds and finally their capacity to generate savings compared to a standard development.