Fireworks were originally a Chinese tradition and these fireworks are almost all imported from China.  If they were detonated in the rainy season it would merely pose risks to fish (the combustion products are toxic and they wash into the rivers).  Eugene has had close calls with fireworks and forest fires, I hope we will be smart enough to prevent the obvious disaster, especially since Cross Fire church doesn't pay taxes to fund our fire departments, not even from the profits of the Chinese fireworks they sell.