Which practice provides an additional barrier to prevent environmental release in case of leaks or spills?

• A. To ensure readiness for immediate use.
• B. Provides an additional barrier to prevent environmental release.
• C. Replaces the need for proper disposal.
• D. Increases the complexity of cleanup.

Answer: (B)

The main concept is defense-in-depth through secondary containment—a backup barrier that catches leaks or spills before they reach the environment. This practice adds a separate physical barrier beyond the primary container, using methods like spill trays, pallets with containment, berms, or other secondary containment systems. By having this extra layer, any released material is contained and can be collected and cleaned up without contaminating soil, water, or air, which is exactly how environmental protection is enhanced. The other options don’t address containment or environmental safeguards: one focuses on readiness, another on disposal, and the last notes cleanup complexity without providing a protective purpose.