Atty Guy: I'm treating a 9/11 victim and will tell you that her most fearsome recollection (other than actually seeing the second plane hit, then being trapped in an adjacent building for a prolonged period of time) is twofold - the dust and particles in the air, and the injuries to her hands and feet trying to escape thru rubble in her workshoes.
So if I were located where you are, I'd consider goggles, a dust mask (not really a respirator, just swimmers goggles and a painter's sanding mask) some sturdy boots and workgloves.