The ERG is intended to be used during which phase of a hazardous materials incident?

• A. During the initial response.
• B. During routine inspections.
• C. After post-incident reporting.
• D. Only for training.

Answer: (A)

The ERG is a field reference used by first responders at the scene to guide the immediate actions when a hazardous materials incident begins. It provides quick identification of the material (by placards, labels, or guide numbers) and the initial protective actions, helping responders establish scene safety, isolate the area, and decide on evacuation or sheltering measures until more detailed information is available. It’s designed for that urgent, early phase of an incident, rather than routine inspections, post-incident reporting, or training alone.