Paterson is a city built on a tilt, and Sandy Hill proves it every winter, with driveways that pitch straight down toward Market Street and hold ice like a shelf. Rosario property services llc works those slopes while the streetlights are still on, plowing, shoveling the walks and salting until a car can back out without a second thought. Come May the same blocks green up fast, and the blades give way to mowers, cutting, edging and hauling the clippings off. There is a real satisfaction in a strip of curb grass squared clean along a sidewalk that has been there a hundred years. Two kinds of weather, one set of streets, learned by heart.