Storage and Accumulation

To reduce non-compliance and streamline the tagging and pickup process, EH&S offers Waste Accumulation Storage and Tracking electronic (WASTe). WASTe will use your single sign-on, so there is no need to share passwords. All LHAT users will be automatically added to WASTe.

How long can hazardous chemical waste be stored?

  • Hazardous waste must be transferred to EH&S for disposal within 180 days of being generated.
  • Acutely hazardous waste and extremely hazardous waste must be transferred to EH&S for disposal within three days of reaching the 1-quart storage limit.
  • Do not overfill containers. Containers with liquid waste should be no more than 90% full.

What are the labeling and container requirements for hazardous chemical waste?

  • Hazardous waste must always be appropriately labeled. Use the online WASTe tool to generate printable labels.
  • Choose a container that is compatible with the type and amount of waste generated.
  • Containers must have secondary containment to adequately contain all contents of the container/spilled materials.
  • Separate incompatible materials.
  • Containers should always be closed when not in use.
  • Store liquids in screw-capped containers that will not leak if tipped over.
  • Report damaged containers to EH&S. EH&S can provide assistance with transferring the contents of the damaged container to an appropriate container.
  • Containers must be inspected weekly for signs of leaks, corrosion or deterioration. Please keep container exteriors free from contamination.

What are the storage requirements for hazardous chemical wastes?

  • Mark storage areas according to the type of chemicals kept there (e.g. "corrosive," "flammable," etc.).
  • Storage of hazardous waste in fume hoods or under sinks is not recommended.
  • Select a hazardous waste accumulation area that is out of the way of normal activities but easily identifiable and safely accessible for EH&S staff members.
  • Keep storage areas clean, appropriately ventilated and at a consistent, cool temperature.
  • Do not dispose of hazardous chemicals via sinks or trash cans.
  • Do not use hoods to intentionally evaporate hazardous chemicals.