You really cant.. grounding to many commercial and apartment buildings is difficult. I cant say its a policy but lets just say there would be thousands of pissed of customers if Apartments didnt go in just because of a lack ground. I know when I was a FS I wouldnt even QC an apartment. D* generally wont either unless there are complaints.
Well, I guess it's more of a deal when the dish is on the roof or the pole is out in the yard anyway. I have another floor above me, and we have trees on the property that are getting to be taller than the building (built in 2000). Knock on wood.