Special waste is a category of Washington state-only dangerous waste that meets the following criteria:
- Conditionally excluded state-only dangerous waste
- Solid only (not liquid, aqueous, or gaseous)
- Must be fully designated before it can be identified as special waste
How to manage special waste
Generators can manage special waste in one of two ways:
- As fully regulated dangerous waste,
- Follow the conditional exclusion requirements.
Condition exclusion requirements
To take advantage of the conditional exclusion of special wastes (WAC 173-303-073), generators must do at least one of the following:
- Dispose of their waste in hazardous or municipal solid waste landfills
- Recycle the waste on-site or off-site
- Treat the waste in a way that is consistent with our treatment by generator guidance
Examples of possible special wastes
- WSC2: Spent polymerization catalyst, sodium hydroxide, aluminum hydroxide, and batteries.
- WT02: Contaminated absorbents and debris, evaporator condensate, pollution control filter cake, and paint.
- WP02: Resins, adhesives, dried paint, sealant, grease, tar, metal machining wastes, and contaminated soil and absorbents.