Which of the following is typically the first step in responding to a hazardous materials incident?

The first step in responding to a hazardous materials incident is to assess the scene for safety. This is crucial because it allows responders to understand the situation before taking any further actions. Evaluating the scene involves identifying any hazards, understanding the nature of the materials involved, and determining the potential risks to responders and the public. This assessment helps ensure that personnel can operate safely and make informed decisions regarding subsequent actions, such as evacuating residents or providing medical assistance.

Prioritizing safety is essential in hazardous materials incidents, as responding without a clear understanding of the scene can lead to further complications, including additional injuries or contamination. Once the scene is deemed safe or the hazards are understood, appropriate measures can be taken.