^You are correct. This the determination and it indicates that the structure will need to have "markers/lights" on it. Just like Mach Tower. So, there will be red blinking lights on top. The filing did indicate that they are anticipating a 315' height. That would be to the marker on top, not necessarily the track height. BG may have exaggerated the height to give the designers some flexibility in the design. That's what we do, we submit for a absolute maximum height, because it's easier to go lower than ask for approval if you've gone higher.