Up hill is good and although the wind can be made useof, it can never be depended on.
If one lives within a mile of any 4 lane highway OR a 2 lane highway with truck traffic, one lives with the possibility of a chemical incident. HazMat cargoes are also carried in box (dry cargo) trailers as well.
Yes, you are absolutely correct. This thread brings to mind a situation that occurred on San Miguel Island (Channel Islands National Park) about 1987, if I remember correctly. The island is about thirty miles distant from Vandenberg AFB, site of missile launches from time to time. On this occasion, one blew up on the launch pad, with a full load of... whatever. I was on Anacapa island, even further away, and we were directed to evacuate immediately. We had some people on San Miguel, and they went inside and sealed up the windows and doors until a plane could arrive to remove them from the island. They were examined carefully and suffered no ill effects.
Even more exciting was the occasion a few years later, when a missile was destroyed while over the island, sending solid stuff raining down. Talk about environmental impacts....