While performing the duties of this job, the employee is regularly required to: Stand; walk; sit; twist; use hands to handle; reach with hands and arms; push; pull; climb or balance; stoop, kneel, crouch, or crawl; talk and hear. Work in unusual and sometimes difficult positions/circumstances such as with ladders, scaffolding, high lift equipment, wires, ducts, crawl spaces, attics, above ceilings, etc.