Which scenario would involve consulting ERG guide numbers such as 16 or 42?

• A. A highway spill of liquified sulfur dioxide
• B. A routine office waste disposal
• C. A water main break
• D. A nonhazardous soil spill

Answer: (A)

The main idea is that ERG guide numbers are used to quickly find hazardous material-specific response information during transportation-related releases. In a highway spill of liquefied sulfur dioxide, responders are dealing with a hazardous material released from an vehicle in transit, so they would consult the ERG to identify the material, understand its health and physical hazards, and determine immediate protective actions, isolation distances, required PPE, and first-aid steps. The ERG guides, such as those numbered 16 or 42 in this scenario, point to the specific substance’s safety data and recommended actions for the initial phase of the incident.

Other scenarios described do not involve releasing hazardous materials in transit, so they typically wouldn’t require consulting ERG guide numbers. A routine office waste disposal, a water main break, or a nonhazardous soil spill aren’t emergency hazmat transport incidents, so they’re not guided by ERG immediate-action information.