I believe the barrier along the east side is temporary, I’ve heard that Westrich still intends to use the site as a parking lot until construction starts on the tower. The east side still isn’t level with the alley, until that is addressed they probably installed the fencing to deter people from parking/driving on to the remains of the building. To confirm with Ian there is a basement, I’ve seen workers using the stairs that were along the north wall during the demolition. They also braced the basement with jack posts. No idea if Westrich is going to keep the existing building as is for parking or remove it and back fill. I’ve heard it maybe years before construction starts on the tower, so the site may stay as is for the winter with the single row of parking retained and the chain along the east edge to keep vehicles off of it.