Which item is NOT listed as part of the Emergency Response Guidebook contents?

• A. Potential hazards
• B. Cordons
• C. PPE
• D. IDLH concentration

Answer: (A)

The Emergency Response Guidebook is organized to give rapid, action-focused safety guidance for hazmat incidents. Its contents group practical information under sections like public safety actions, protective action guidance, and material-specific hazard data rather than listing broad topics as separate items. Cordons are covered within the public safety guidance that tells responders where to establish a safe perimeter. Personal protective equipment is addressed explicitly to guide what gear responders should use in different situations. IDLH concentrations are part of the hazard data used to assess risks and determine appropriate respiratory protection within the material entries. Because hazard details are embedded within the material-specific sections rather than as a standalone top-level item, “potential hazards” isn’t listed as a separate contents category.