The remedial action plan included risk-based standards derived following the Ontario Ministry of the Environment (MOE) streamlined risk assessment (RA) process. A key remedial objective was to implement a more sustainable remedial strategy compared to traditional remediation approaches (i.e. "dig and dump"). The on-site treatment and reuse of soil is a considerably more sustainable remedial approach when compared to landfill disposal and clean soil importation. Groundwater and soil management were also critical components of the overall remedial strategy, where soil was segregated, stockpiled and treated according to the type of contaminant impact, and accumulated water was treated.
Kilmer also purchased a specialized environmental insurance policy that provided supplemental assurance and support for redevelopment of the site. The final built-form will incorporate several design considerations, including underground or at-grade parking directly beneath any residential unit to integrate environmental and subsurface conditions with this redevelopment.
To assist Kilmer with the on-site treatment process, funding was obtained from the federal non-profit foundation Sustainable Development Technology Canada (SDTC), which assists in bringing innovative technology solutions to the market. More specifically, zero-valent iron (ZVI) was added as a soil amendment to treat soil and groundwater impacts after the source was excavated. It was demonstrated that there was a significant reduction (up to 75%) in the amount of greenhouse gas emissions when compared to a traditional "dig and dump" method of remediation.
The remedial plan followed the recently revised and adopted MOE regulations, and Kilmer worked closely with the MOE to provide input as it developed proposed regulatory reforms to the province's updated brownfield legislation (O. Reg 511/09). The MOE and the Ontario Centres of Excellence acted as Observers of the SDTC-supported remedial activities at the site, and support from the local City Councillor facilitated meaningful consultation with the surrounding neighbourhood.