Salt air off Long Island Sound gets into everything in Mamaroneck — the stone walls, the old oaks, the lawns that tilt down toward the harbor. Petrucci Landscape LLC mows, trims and maintains those lawns through the warm months, then plows drives and clears walks when a nor'easter comes up the coast and turns the water gray. Wet coastal snow is heavy and it arrives all at once; the answer is starting early and not stopping until the last walk is open. A village street cleared before the morning train is a small civic kindness. Mamaroneck, Larchmont, Rye and Harrison are the service area.