requires physical strength, stamina and good physical coordination; Carry out routine tasks with minimal supervision; Able to negotiate various field conditions - hot, cold, humid, wet, ice, wind, odors, smoke, uneven ground, etc; Able to work in a standing, kneeling, squatting or prone position for extended. While performing the duties of this job, the employee is regularly required to stand; walk; sit; use hands to finger, handle, or feel objects, tools or controls; reach with hands and arms; climb stairs; balance; stoop, kneel, crouch or crawl; talk or hear; taste or smell - any or all of which may be for extended periods.