Unfortunately, I don't know the answer to any of your questions.

All I know is that my physical symptoms (fatigue, etc.) get worse within an hour after my sinuses begin burning and my sinuses begin burning within minutes of seeing chemtrails sprayed in the sky.

I can only guess that some material begins to reach the ground within minutes of spraying.

Interestingly, I'm in Maine right now and have been for 2 days and haven't seen a single chemtrail.