The work requires frequent bending/stooping, climbing (stairs and ladder), crawling, fine manipulations, grasping, kneeling, pulling, pushing, reaching, repetitive motion, and occasional lifting/carrying objects weighing up to 50 pounds; with frequent lifting/carrying objects weighing 15 to 44 pounds (recycling bins, etc.). All employees are subject to recall around the clock for emergency response operations, which may require irregular work hours, work at locations other than the normal work location, and may include duties other than those specified in the official job description.