If a material is unidentifiable and potentially hazardous, what should you do according to the ERG?

The response that refers to using Guide Number 111 is informed by the guidelines provided in the Emergency Response Guidebook (ERG). Guide Number 111 specifically addresses situations involving unidentified or unknown hazardous materials. This guide is designed for use when confronting materials that cannot be readily classified, thereby providing critical information about how to respond safely and effectively.

Utilizing this guide allows responders to take precautionary measures, ensuring they remain safe while they assess the situation further. It usually contains recommendations for protective actions, evacuation distances, and potential hazards associated with unidentified materials. It emphasizes the importance of treating potentially hazardous materials with caution until proper identification can be made.

In contrast, assuming the material is safe is not an appropriate response because it disregards the potential risks involved. Consulting a hazardous materials expert is useful but may not provide immediate guidance in an emergency. Using the highest Guide Number available could lead to an inappropriate and overly cautious response that may not align with the specific hazards of the material at hand. Thus, utilizing Guide Number 111 aligns with established safety protocols and prioritizes the well-being of responders and the surrounding community.