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EP-Hazardous Waste Management
Forms Guidance Supplies

Containers must be kept "closed"

Containers are considered closed when all lids, gaskets, and locking rings are in place and secured.

Hazardous waste containers must be kept closed, except when adding or removing waste.

Keeping containers closed helps ensure that:

  • Waste does not evaporate from the container
  • Waste is not spilled if the container is knocked over

Some hazardous waste accumulation containers are accessed so frequently that constantly removing and replacing bungs, lids, and retaining rings becomes a real pain. A number of commercially available devices may be acceptable for closing the container if these devices are properly used and maintained.


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