Occasionally will be required to wear disposable dust/surgical mask, and wear respirators, such as a disposable respirator mask (N-95), half-face/full-face style, PAPR, SCUBA.Occasionally will come in contact with chemicals, such as aerosols, biological inhalants, plastics, inorganic dust, and powders, etc. Occasionally will be required to ascend or descend ladders, stairs, scaffolding, ramps, poles, and the like, move self in different positions to accomplish tasks in various environments including tight and confined spaces, and move about to accomplish tasks or move from one worksite to another.