Subject to outside environmental conditions (extreme cold/heat), subject to noise, vibration, hazards, atmospheric conditions (affect the respiratory system), frequently work in close quarters and/or function in narrow aisles or passageways (areas that could cause claustrophobia). Physical Requirements: Repetitive motion, Climbing, Balancing, Stooping, Kneeling, Crouching, Crawling, Reaching, Standing, Walking, Pushing, Pulling, Lifting, Picking, Grasping, Talking, Hearing, and Visual Acuity (depth perception).