So it may not be healthy for certain people to stand 24 hours a day, 7 days a week, in front of the Palomar?

Sounds like a non-issue to me.

Even if radiation levels are high in the top floor of the building, appropriate solutions would be to add a little EM shielding to the roof, adjust the antenna to focus the energy more outward, reduce the power level slightly, or just post a warning sign on the top floor stairway and elevator entrances. We already have this for "chemicals known to the state of California to cause cancer".

Why jump to extreme measures, except out of hostility?

How do you know safety tests weren't performed by the owner and/or installer? Just because you are unable to find anything on record.

Go down to the Palomar with an EM field strength meter and prove something, or shut your hole Chicken Little.