What is a key part of containment strategies for spilled hazardous materials?

A key part of containment strategies for spilled hazardous materials involves using barriers, dikes, or absorbents to stop the spread of the hazardous material. This practice is essential for preventing the spill from contaminating larger areas, such as soil and water sources, which could lead to more serious environmental and health hazards. By creating physical barriers or utilizing materials that can absorb the hazardous substance, responders can effectively limit its movement and mitigate potential damage.

In contrast, other methods like splashing water on the spill can lead to the dispersion of the hazardous material, potentially increasing its reach and danger. Covering the spill with cardboard is not effective because cardboard cannot prevent the spread of liquids and may also degrade when in contact with hazardous substances. Waiting for help to arrive does not actively address the spill's immediate dangers and is not a proactive containment strategy. Therefore, the use of barriers and absorbents is critical for effective containment of hazardous material spills.