Who is responsible for shoveling the sidewalks?

Presently, there is an ordinance requiring property owners to remove snow from their bordering sidewalks within six hours after the snow ceases to fall in the daytime and before 12:00 noon if it ceases to fall in the nighttime. Violators are subject to a $25 fine for 1st offense, $75 for 2nd offense and $100 for 3rd and subsequent offenses.