Dirty spring snow carries more than dirt. There are also other pollutants we can’t see
As the Prairies wait for the latest round of snow from a powerful storm system to melt, other parts of Canada bid farewell to the white stuff a long time ago.But what is left behind can be more of a pain than the snow itself.At Regina's snow storage facility, for instance, nearly 24,000 loads of snow are brought to the open plot of land in the city's northeast each winter.What once were tall, white mountains have now become shrinking piles that look more like dirt.Regina's snow storage facility sees, on average, about…