When is it necessary to notify authorities about a hazardous materials incident?

Notifying authorities about a hazardous materials incident is essential in situations where there is a potential risk to health, safety, or the environment. This includes emergencies such as spills, leaks, or other events that could harm people nearby or contaminate the surrounding environment. The regulations are designed to ensure that appropriate response measures can be initiated immediately, protecting both people and the environment from the harmful effects of hazardous materials.

In contrast, the other options either limit the circumstances under which notification is required or suggest that no action is needed, which underscores a misunderstanding of the serious nature of hazardous materials incidents. It is crucial to take into account the broader implications of any incident involving hazardous materials, regardless of visible damage or quantity, to ensure safety and compliance with regulations.