The recommended course of action for fighting a small fire involving a substance identified by the UN/NA ID number 2553 would be found in the _________ section of the ERG

• A. Orange
• B. Blue
• C. Green
• D. Yellow

Answer: (A)

Responding to a hazmat incident hinges on knowing where to find material-specific guidance in the ERG. For a substance identified by a UN/NA ID number, the orange pages are where that guidance lives. Those pages contain the substance guides, so you can match the UN/NA ID to a specific guide number and then read the recommended actions for that material, including how to fight a small fire, what extinguishing media to use or avoid, PPE to wear, and any special precautions. The other color sections provide related information (such as initial response actions or identification details), but the exact firefighting recommendations tied to a UN/ID number are found in the orange portion.