Which of the following is a common physical barrier used in spill containment?

A common physical barrier used in spill containment is dikes. Dikes are structures designed to hold back liquids and prevent them from spreading beyond a designated area. They create a physical perimeter that can effectively contain spills from hazardous materials, ensuring that the substance does not migrate into surrounding environments, such as soil or water bodies.

Dikes can be made from various materials, including earth, plastic, or metal, and are essential in managing larger spills where containment is crucial for safety and environmental protection. The use of dikes helps minimize the risk of contamination and provides a controlled area for cleanup operations.

While absorbent pads, plastic sheeting, and drain covers are also useful for spill response, they serve different functions. Absorbent pads are effective for soaking up small amounts of liquid spills. Plastic sheeting can help cover areas to prevent contamination or collect drips, and drain covers can prevent spilled substances from entering storm drains, but they do not create a barrier that encloses a spill like dikes do.