Work Environment: Exposure to temperature extremes (hot or cold), humidity extremes, noise, low or intense illumination, vibration, microwaves, biological hazards (communicable diseases, bacteria, insects, mold, fungi, etc.), chemical hazards (asbestos, fumes, vapors, gases, dust, smoke, etc.), electrical hazards, prolonged exposure to sunlight. Work outside, around moving objects or vehicles, around machinery with moving parts, on slippery surfaces, on uneven surfaces, alone, work prolonged or irregular hours Physical Demands/Requirements: Frequent: carrying/lifting/lowering heavy weight (45lbs and over), standing, walking, stooping, kneeling, crouching and reaching.