Time to demo the last building on the site.
Indeed - and here it goes - taken this morning (Saturday, September 23). It turns out the delay resulted from the time required to negotiate a temporary encroachment agreement with the adjoining property, and then to notify the tenants of the planned work. I presume the alternative would have been to demolish the remaining structure by hand, with hand held jack hammers, etc.
Also, demolition and removal of the rest of the concrete base slab remaining at the north end of the site is expected to take another two to three weeks.
Apologies for the quality of the photo - sun was in the wrong spot, and hard to get a combination of close enough to show detail of the ramp being demolished, without losing overall perspective.