ABSTRACT
Golder Associés Ltée was involved in a site rehabilitation project at a former industrial site located near Montréal, in southern Québec, Canada. One of the project’s main components was the relocation of a 600-m creek reach away from contaminated soils and groundwater, and the use of the decommissioned creek reach as a consolidation zone for some of the site’s contaminated soils. The design of the diversion reach aimed to create a stream with improved hydraulic and ecological functions compared with the original creek, which had been degraded by human activities over time. It was based on extensive fieldwork, geomorphological assessments and hydraulic modelling, and on constant communications with the relevant government agencies. The construction of the diversion reach required the excavation of approximately 90,000 m3 of soil. The creek diversion was completed in 2011 and the diversion reach appears to have been populated by a significant number of fish species.
