Artificial Snow

Hey...just doing some research on the environmental impacts
of ski resorts using artificial snow to compensate for the increase
in global warming.

There is so much hype about using the stuff, but no one is really
considering the potentially damaging affects the bacteria and chemicals
(used in the snow) will have on the ecology of the fragile microsystems.

Does anyone have any emperical information/opinions they could post/ forward to me?

Thanks.