[TowerTalk] Single Point Ground and Lightning Rod Ground

[John Wagner]

I have a vertical on a large flat metal roof. Around the edge of the
building is a lightning rod system using pointed air terminals and dedicated
ground wires down the side of the building to ground rods.
 
I want to install some lightning suppressors on the coax..question is do I
bond them to the lightning rod ground or the utility ground? I assume
(checking on this) that at some point the lightning ground and the utility
ground are bonded together. Varying advice about this on the NEC and Fire
Code sites.
 
I also have to establish a station ground. 
 
It seems like the utility ground system would be the place to bond the
suppressors for the vertical and also be the best place to get the station
ground.
 
I'm not sure I want direct bonding the lightning rod system.
 
Any thoughts?
 
John W8JJW