Exterior chalking is allowed only on uncovered horizontal solid surfaces where rain waters will naturally wash it off. For example, chalking is allowed on open sidewalks on campus; chalking is not allowed on wall surfaces (such as the Paresky Snack Bar oval or the pillars on Chapin), nor on horizontal surfaces covered by a roof or overhang (such as the front porch of Paresky). Chalkings must include the name of the person, group, or office responsible for them. Any chalking that falls outside of these parameters will be removed and the person(s) responsible, if known, will be charged for clean–up/removal.