Ability to perform essential maintenance to facility or equipment which may involve, but not limited to the following activities: semi – reaching to full-reach overhead; crouching; kneeling; shoveling; carrying, working in narrow and/or confining spaces: underground, overhead, and at ground level; twisting of the waist, shoulders, and legs; and lying on stomach and/or back. May perform wet and dust mopping, dusting, trash removal, recycling, window washing, painting, vacuuming, seasonal activities dealing with lawn care and snow removal, and general cleaning.