An upslope storm arrives quietly. The wind swings around to the northeast, the mountains disappear, and Denver gets the heavy stuff. Macc Landscaping & Snow Removal is out in it at three in the morning, plowing lots, pushing back drives, shoveling walks and treating the ice that sets up behind the melt. Down by the rail yards and the river bottom the drifts pile wherever the wind finds a fence to lean on. By the time the street lights go off, the pavement is black again and the morning starts on time. That is the point of being up at that hour.