Which 40 CFR Part outlines the requirements for storage units to be designed with containment systems for hazardous waste munitions?

The correct answer focuses on 40 CFR Part 265, which specifically addresses the requirements for the management of hazardous waste, including the design and operation of storage units. This part includes regulations stipulating that storage units must be equipped with containment systems capable of preventing the release of hazardous waste into the environment.

This is particularly important when dealing with hazardous waste munitions, as accidents can have serious environmental and safety implications. By requiring containment systems, Part 265 ensures that facilities have the necessary structures in place to contain any potential spills or leaks. This part of the regulation helps to promote responsible management practices and reduces the risk of hazardous waste causing harm to public health and the environment.

The other parts mentioned do not focus specifically on the design and containment requirements for storage units handling hazardous waste. Part 260 provides definitions and general provisions regarding hazardous waste, Part 270 deals with permits for hazardous waste treatment, storage, and disposal facilities, and Part 275 outlines the standards for universal waste management. While all these parts are integral to the broader scope of hazardous waste management, Part 265 specifically addresses the containment systems necessary for storage units.