March snow in Arvada arrives heavy and wet, a foot of it bending branches by midnight and gone off the south walks by Thursday. Hill's Service's LLC is out in the middle of that, before dawn, opening driveways so people can get to work. The job is plowing, shoveling walks and steps, clearing the apron the city blade just refilled, and putting ice melt where the shade will hold a glaze. There is a particular quiet at five in the morning — the scrape of steel and nothing else. Then the light comes up on a clean drive, and that is the whole point.