West Coast EMT Block One Exam

Upon encountering a green cloud at the scene of an overturned truck, what is your first action?

1. Quickly gain access to the patient

2. Ask the driver to exit the vehicle

3. Park downhill from the incident

4. Position the ambulance upwind

The correct answer is: Position the ambulance upwind

In the context of encountering a green cloud at the scene of an overturned truck, the most appropriate first action is to position the ambulance upwind. This decision is critical for ensuring the safety of all personnel involved in the emergency situation. A green cloud could indicate the presence of a hazardous material, such as chlorine gas or another toxic chemical. Positioning the ambulance upwind helps to prevent exposure to potentially harmful vapors or gases, as the wind will carry these substances away from responders and the ambulance. This precaution is vital for maintaining a safe operational environment and protecting both the emergency workers and any bystanders. The other actions, while they may seem relevant, do not prioritize the immediate safety of the team in the context of a potentially hazardous scene. Gaining access to the patient or asking the driver to exit the vehicle could expose emergency personnel to danger if they enter the contaminated area without taking proper precautions. Parking downhill is not as effective as positioning upwind, since the wind direction is the most significant factor in controlling exposure to hazardous materials.