When is the Emergency Response Guidebook primarily used?

The Emergency Response Guidebook (ERG) is primarily used in phase 1 and as necessary later in the emergency response process because it serves as a crucial tool for first responders when they arrive at the scene of a hazardous materials incident. In phase 1, responders need immediate guidance to assess the situation, identify the hazardous materials involved, and determine the necessary initial protective actions. The ERG provides critical information about the properties of hazardous substances, recommended safety measures, and emergency response protocols that facilitate quick and informed decision-making.

Utilizing the guidebook in the initial response phase helps ensure that responders can effectively manage the incident, safeguard their own safety, and protect the public and environment. As the situation evolves, the ERG can continue to serve as a reference for planning further actions and responding to changing conditions. This ongoing utility highlights its importance throughout the different phases of an emergency response, particularly in the early stages.