During trench rescue operations, cordon off approximately how many feet around the trench?

• A. 50 ft
• B. 75 ft
• C. 100 ft
• D. 150 ft

Answer: (C)

Establishing a safety perimeter around the trench is essential because trench walls can fail unpredictably, soil can shift, and debris or equipment nearby can cause secondary hazards. About 100 feet provides a practical buffer for standoff, staging, and safe movement of people and gear without crowding the trench edge. It keeps bystanders out of danger, gives responders room to set up shoring, lifting equipment, and rescue tools, and allows the incident command to manage access and operations effectively. In adverse conditions—unstable soil, weather, or nearby utilities—you’d typically expand the perimeter, but 100 feet serves as a solid baseline that balances safety with workable access. Smaller distances risk exposure to secondary collapse or flying debris, while much larger distances can hinder control and resource placement.