Often, we do not think of snow and ice as potential stormwater runoff, but they definitely are. With increasing warm spells throughout the winter causing multiple freeze-thaw cycles where the snow and ice begin to melt and shrink, winter precipitation acts as rain does, picking up and transporting contaminants from sidewalks, driveways, rooftops, roads, parking lots, and agricultural fields. Ice melt salt, pet/animal waste, fertilizers, vehicle exhaust/oils/fluids, and litter are some of the common contaminants picked up as ice and snow melt away.
