Which tactic is used to manage the movement of a hazardous material spill?

• A. Solidification
• B. Vapor suppression/dispersion
• C. Diking
• D. Pressure sealing

Answer: (C)

Diking is a tactic used to manage the movement of a hazardous material spill by creating barriers to contain the spill and prevent it from spreading further. This technique involves the use of earthen materials, synthetic barriers, or other substances to form a physical barrier around the spill. By doing so, it helps to isolate the hazardous material and minimizes contamination of surrounding areas, thereby reducing the risks associated with the spill. Diking is especially effective for liquid spills, as it can direct the flow of hazardous substances to designated containment areas.

In contrast, while solidification, vapor suppression/dispersion, and pressure sealing can be effective in specific scenarios, they do not directly address the containment and management of the spill's movement as robustly as diking does. Solidification changes the physical state of the material, vapor suppression aims to minimize airborne chemical exposure, and pressure sealing is typically used to contain leaks in pressurized systems rather than addressing spills directly on the ground.