What must be established at each incident site?

The establishment of a cordon and entry control point is crucial at each incident site because it serves several vital functions in incident management. First, it helps to ensure that only authorized personnel have access to the site, which is essential for maintaining operational security and the integrity of the investigation or response efforts. By controlling who can enter and exit the area, it also minimizes the risk of contamination of evidence or disruption of critical operations.

Additionally, the cordon ensures the safety of the surrounding public by creating a secure perimeter around hazardous areas, allowing responders to perform their duties without interference. It establishes a clear boundary that helps in managing the scene effectively and guides emergency responders regarding where they can safely operate.

While the Incident Command Post, perimeter security fence, and medical triage area are also important components of incident management, the cordon and entry control point specifically addresses the need for access control and safety at the location of the incident, making it a primary requirement in managing any incident site effectively.