I need a structural engineer sign off for 1 x 60mm diameter kitchen waste core through a 150mm concrete slab in a city office building.

Building owner insisting we need a professional engineer sign off on new core hole - 60mm diamater for kitchen waste in new office fitout project - level 10, 60 Marcus Clarke St, Canberra.
Slab scan has been completed - report attached.
Office fitout plan attached.