What is the physical method of confinement used to control the movement of hazardous materials into less harmful areas?

The physical method designed to control the movement of hazardous materials into less harmful areas is known as containment. Containment involves using physical barriers, such as berms, dikes, or specialized containment systems, to prevent the spread or migration of hazardous substances. This method is critical for minimizing environmental impact and ensuring safety during a hazardous materials incident.

By employing containment strategies, responders can effectively limit the area affected by hazardous materials, allowing for safer clean-up operations and reducing exposure to individuals and the environment. This is especially important in preventing spills from spreading into water sources, soil, or populated areas.

While diversion may focus on redirecting the flow of hazardous materials, it does not specifically focus on physical barriers to control their movement. Regulation involves setting legal frameworks and guidelines but does not involve direct physical methods of confinement. Isolation refers to separating hazardous materials from people and the environment but may not involve physically containing them in a specific area, unlike containment, which actively seeks to prevent movement.