I have a building that has a ground floor level that is set back 10' from the rest of the building (floors 2-10). The 2nd floor is supported by columns extending from the 2nd floor exterior face and there is a public pedestrian thoroughfare that runs between the 2nd floor support columns and the 1st floor glass exterior window wall (very similar to illustrations 10.3 and 11.3). This PPT does not meet the requirement for external circulation since there is access to the 1st floor spaces from within the building as well. Can this area between the columns and the 1st floor building window wall be included in the IGA boundary (and therefore be calculated as part of the tenant area)? The landlord's consultant is convinced that it can be included.