HAZMAT Technician Practice Exam

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What is a “sandwich" method in constructing a temporary dam during spill containment?

Using concrete barriers

Using absorbent materials sandwiched between impermeable barriers

The "sandwich" method in constructing a temporary dam during spill containment involves utilizing absorbent materials that are placed between two impermeable barriers. This design is effective because it not only provides a physical barrier to contain the spill but also enhances absorption and prevents the hazardous material from spreading. By using absorbent materials, the method effectively minimizes the potential for environmental contamination and aids in the cleanup process.

This method is particularly important in spill response because it capitalizes on the combination of physical containment and absorption, ensuring both immediate containment of the hazardous liquid and a means to deal with the spill. The impermeable barriers hold the spills in place while the absorbent layers capture the substance, making this approach highly functional and efficient for emergency response in hazardous material incidents.

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Using wooden planks

Using barrels filled with sand

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