What commonly used method helps limit the spread of hazardous spills?

Diking is a widely recognized method for containing and limiting the spread of hazardous spills. This technique involves constructing a barrier, often made from earth, sandbags, or other materials, around the spill area. The primary purpose of diking is to create a physical boundary that prevents the released hazardous material from spreading to surrounding environments, including soil, water sources, or populated areas.

In the context of hazardous materials response, diking is especially effective for liquid spills. By confining the spill within the constructed barrier, responders can reduce the risk of contamination and make cleanup operations more manageable. This method is often used in conjunction with other strategies, such as pumping or absorbing the material, to effectively manage the spill.

Neutralization, while it plays a role in treating certain hazardous substances, especially acids and bases, does not physically contain or limit the spread of a spill. Pumping is useful for removing the hazardous material after it has been contained but does not inherently prevent its spread. Aeration is typically used to disperse gases or vapors rather than to contain spills.