Chemical, Bacteriological and Physical Injury Hazards for this position would include: Methane gas, natural gas, low oxygen levels, oxygen rich levels, hydrogen sulfide gas, asbestos dust, clay dust, concrete (skin contact), Hepatitis A, B and C, drowning, equipment injuries, traffic accidents, snake bites, insect bites, poison plants, and excavation cave-ins. Work hazards for this position include: Noise from jack hammering concrete or asphalt, heavy equipment operations, air compressor, generators, hydro jet trucks, vacuum trucks, cutting/sawing operations, large electric motors, motor driven pumps, electric saws, drills, and grinders.