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Treatment by Generator

Treatment is done to make wastes less hazardous, non-hazardous, or easier/safer to transport. Waste is usually treated at a facility with a dangerous-waste treatment permit. Under certain conditions, generators may treat their own wastes on site without a permit. This is called treatment by generator or TBG.

While each type of treatment may have its own guidelines and limitations, there are some basic conditions for on-site treatment.  They include:

  • Treat in an accumulation tank or container.
  • Mark the tank or container with the date waste is first added, and empty it every 90 or 180 days, depending on generator status.
  • Maintain a log of treatment activity.
  • Count and report amount of treated waste, and any dangerous waste residues resulting from treatment.
  • Small quantity generators must follow guidance described in Ecology's publication Small Quantity Generators Treating Dangerous Waste.

These documents provide guidance for specific treatment methods:

Elementary Neutralization
Carbon adsorption
Separation and distillation
Aldehyde Deactivation
Pharmaceutical Waste

Related information

Shop Guide for Dangerous Waste Management is an Ecology publication with information on handling many common types of wastes.