The surface facilities require a dedicated surface area of about 650 metres by 550 metres for the main buildings and about 100 metres by 170 metres for the ventilation exhaust shaft.
The facility will also need a storage area for the excavated rock. Its location (on-site or off-site) and footprint would be determined in collaboration with the community.
Repository designs have been created for planning purposes, but may be subject to change as the project moves forward. According to these initial conceptual designs, the repository will require an underground area of about two kilometres by three kilometres (about 600 hectares or 1,480 acres).
The actual underground footprint at any particular site would depend on a number of factors, including the characteristics of the rock, the location of underground features in the rock, the final design of the repository, and the total inventory of used fuel to be managed.
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