The image below is from Ziobrop's tumblr page -
http://fillingtheholehfx.tumblr.com/.
It is convenient to have the dirt ramp so that the concrete trucks can drive down into the work site but at some point it will have to be removed. I wonder how long they will keep the dirt ramp? Once it is gone the concrete trucks will have to off-load from the street.
My guess is that they will probably build two levels covering the work site (as they currently appear to be doing) so that the concrete trucks can off-load as close to the work area as possible. But after a couple of levels are complete then off-loading from the street will probably be more advantageous(?)
All the concrete being used in the Nova Centre must be a real boon for the concrete company supplying it.