Which of the following are possible routes of exposure to hazardous waste?

• A. All of the above
• B. Inhalation
• C. Dermal
• D. Ingestion

Answer: (A)

Exposure to hazardous waste can occur through more than one route. Inhalation means breathing in vapors, gases, or dust that are released from waste, which is common for volatile chemicals or dusty materials. Dermal exposure happens when skin contacts waste or contaminated surfaces, and many substances can be absorbed through the skin. Ingestion occurs when hands contaminated with waste are used to eat or drink, or when contaminated objects or food are introduced to the mouth. Because each route is possible in real-world handling of hazardous waste, the correct answer reflects all of them. Safety programs address all routes by using ventilation and containment to reduce inhalation, protective gloves and clothing to reduce dermal contact, and strict hygiene practices to prevent ingestion.