If given a UN/NA number, which color section in the ERG would you use to find the guide page?

To locate the guide page using a UN/NA number, you should refer to the Yellow section of the Emergency Response Guidebook (ERG). This section is organized numerically and allows responders to quickly find the relevant guide based on the specific UN or NA number associated with a hazardous material. When you find the number in the Yellow pages, it directs you to the correct guide that provides crucial information on how to handle the material safely during an emergency.

The Blue section is typically used for identifying materials based on their name, while the Green section provides information on evacuation and isolation distances for certain substances. The White section contains additional reference information to aid responders but does not directly assist in finding guide pages related to specific UN/NA numbers.