Trinity developed the GHG assessment report in alignment with Infrastructure Canada’s technical guidance. The primary objective was to quantify emissions and reductions associated with the proposed project, thereby demonstrating the net environmental benefit.
The analysis encompassed the full lifecycle of project-related GHG emissions, including upstream material production, construction-phase emissions, transportation, and both baseline and project operational emissions. In cases where project-specific data were unavailable, Trinity applied engineering estimates informed by its extensive technical knowledge base and prior project experience. Emission factors were derived using industry averages and life cycle analysis (LCA) databases. Net reductions were calculated by comparing baseline emissions to projected future emissions under the electrification scenario. Trinity also extended the analysis to include non-GHG air contaminants—such as carbon monoxide, nitrogen oxides, particulate matter, volatile organic compounds, and sulphur oxides—providing a comprehensive view of the project’s air quality benefits.
Trinity also prepared a climate resilience assessment report, following Infrastructure Canada’s methodology. The process began with identifying climate-related risks to the proposed project and study area. Key climate parameters were identified using publicly available datasets, including projections from the Coupled Model Intercomparison Project Phase 6 (CMIP6), which aggregates results from more than 100 climate models. The assessment considered multiple global emission scenarios, from low to high, to ensure robust planning. Each climate parameter was evaluated through a risk assessment matrix that combined likelihood and consequence of occurrence. High-risk parameters were then examined further, with recommended mitigation measures proposed to strengthen project resilience.