Sound travels up. Generally, if you're below the level of the Bayview roofline you can't hear it.
It can be heard distinctly at ground level near the official front of the building that faces Shutters. As I said in the previous post, it depends on your circumstances. If you walk by you would't think much of it.
Workers on the roof, such as window cleaners, turn the thing off because it is too loud and annoying. After they were done a couple of months ago they turned it back on, but the cycle seemed to be 9PM to 5AM at night so I don't think they set it properly. I beleive the maintenance guy eventually discovered the error, leading to the current circumstance of full and constant squawk.
I've pointed out that running the device at that frequency is just going to get the gulls habituated to the sound. I've also pointed out that most newer buildings downtown use mirror flashers which seem to be very effective.