Our understanding at this point is that it would reduce up to around 15% of the planned volume of the visitor welcome centre, which would have significant impact.
If we were to take the root system, as was discussed—and I'll pass it over to Ms. MacDonald—it certainly extends well beyond the trunk of the tree. There's a large zone that would be proscribed, which would require no activity around there.
You couldn't leave it there without changing the visitor welcome centre, but if the visitor welcome centre were to change, it would be very difficult to protect it.
Our understanding is that if there were no construction in this area and the Centre Block rehabilitation were not happening and there were no visitor welcome centre, then it is likely that this tree would have a one- to five-year lifespan, potentially up to 10 years. The likelihood that this tree would still be living when parliamentarians return to Centre Block is quite low, from our understanding and the analysis that has been done, which has been fairly significant. To date, I think there have been six assessments, which is fairly robust for the assessment of a tree.