What type of dam should be constructed for a hazardous material with a specific gravity greater than 1?

The correct approach for managing hazardous materials that have a specific gravity greater than 1 is to utilize a containment dam. This type of dam is specifically designed to contain spills and limit the movement of hazardous materials, especially those that may sink or spread on top of water, depending on their density.

For substances with a specific gravity greater than 1, which indicates they are denser than water, a containment dam plays a crucial role in preventing the material from dispersing into the surrounding environment or water bodies. This can effectively reduce the potential impact of contamination and allows for the safe management and cleanup of the hazardous material.

While overflow dams manage the excess flow of water by allowing it to flow over the dam, and underflow dams involve directing flows below a certain point, these designs do not specifically address the needs presented by hazardous materials with higher densities. A gravity dam is generally used for retaining water through the force of gravity and doesn't serve the specific purpose of containing hazardous materials effectively. Thus, a containment dam represents the most appropriate and effective solution in this context.