Another concern in an area as dry as we've been is burning on windy days where sparks from even a burn barrel could escape it's confines.
We had an old guy who lives in the river valley below our neighborhood decide to burn his trash (in a barrel) on a day of 40+ mph winds. It quickly got out of control.
The Fire Dept came and warned us that if the winds changed, the fire could sweep up the hillside and put us in danger.
Luckily the wind relaxed and they were able to keep the fire under control, only burning a couple of fields and a few privacy fences.
It's idiots like this old guy who *spark* these sort of laws and ruin the convenience for the rest of us.
Doesn't matter. ANY fire that results in incomplete combustion (i.e. "smoke") produces dioxins, and if there is chloride (i.e. salt) present, then it produces chlorinated dioxins as well.