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National Summary
Although the answer to this question might appear to be obvious, the question arises when trying to determine whether a management unit is a container or a tank. The key difference is that a container is a portable device, whereas a tank is a management unit that remains stationary. The Resource Conservation and Recovery Act (RCRA) hazardous waste regulations define a container as "any portable device in which a material is stored, transported, treated, disposed of, or otherwise handled." (This definition is intentionally broad to encompass all different types of portable devices. Fifty-five-gallon drums and barrels are two common types of containers, but a container can also be a tanker truck, railroad car, small bucket, or test tube.) In contrast, a tank is defined as a stationary device designed to contain an accumulation of hazardous waste, which is constructed primarily of nonearthen materials that provide structural support.
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