Nahh... it's not as bad as one might think.
It's been about 3 years since I was last out there, but I recall the trees being tall back then... but maybe it's just that they're fairly dense. The "deal" was made by the (soon to be) former owners... don't know anything about that, but the technical part will obviously involve all of the normal goodies that would be involved with a project like this... probably a bunch of additional filtering, due to the other nearby stations.
The "parks dept" does keep a close eye on who does what there. There isn't vegetation growing through the fixtures, as their engineer takes good care of the place. Clearing of foliage has to be supervised, so they all get together once a year or so to get that done. Repairs to walkways & coax enclosures are usually done around then as well.
The building looks like it might have hosted the entire station at one time... might have been a cool place to work in, if you like seclusion. There is plenty of room for KKDZ, and I'm told that space has already been cleared out for them. Given the people involved in this, I expect both stations will wind up with very good installations.
Hoping to get out there to see the site again with their engineer in the next couple of weeks or so.