Sorry, but the image of the GFL equipment (the soil mound, 2 excavator and pickup truck) I was trying to show (second image shows it better) was actually south of Enterprise (I took this image on YMCA Blvd near the Unionville station bus loop entrance) which made me believe this was for...
The hallway connects the existing station concourse via the passageway leading to the community centre/GO platforms, which is what most passengers would transfer to. The staircase, on the other hand, takes you up to street level.