In the event of an incident involving CNG, who must be notified by telephone?

In the context of an incident involving Compressed Natural Gas (CNG), it is crucial to notify the appropriate authorities to ensure public safety and effective management of the situation. The correct answer is to notify the AFS (the appropriate authority that handles safety regulations and emergency responses related to hazardous materials).

Notifying the AFS is vital as they are equipped to respond to incidents involving CNG and can mobilize the necessary resources, provide guidance on safety protocols, and ensure compliance with regulatory requirements.

While other options might suggest informing various entities, such as local residents, supervisors, or just the public safety department, these actions are typically part of a broader communication strategy rather than the immediate requirement following an incident. The AFS has the expertise and authority to coordinate the response effectively among all relevant parties involved in managing the incident.