California waste code 223 Oily hazardous waste that is neither used oil nor separator sludge.

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Based on California Title 22 and DTSC guidance
Nothing is stored

Organics
Other oily hazardous waste

The material contains oil but is neither used oil nor oil-water separator sludge.

Hazardous waste containing oil that is not waste oil under code 221 or separator sludge under code 222.

Is California code 223 hazardous waste?

Not from the code alone. The material must first be determined hazardous. California code 223 is not restricted, and a restricted code takes priority over it. A non-restricted code doesn't make a waste non-hazardous.

If the shipment needs the Uniform Hazardous Waste Manifest, enter 223 in Item 13 for the waste line. Use one California code, plus any federal RCRA codes when the waste is federally hazardous.

Waste is RCRA waste when it meets a federal listing or characteristic and no federal exclusion applies. Non-RCRA waste is hazardous under California rules only. California presumes hazardous waste is RCRA unless the generator shows it isn't, so keep that determination.

What does California code 223 cover?

This is for hazardous material contaminated with oil, when neither the waste-oil nor the separator-sludge description fits. Oily cloth, absorbent and filter residues are candidates once hazardous status and any recycling exemption are checked. It doesn't make every used filter hazardous, and it doesn't classify oil drained separately.

Official wording: 22 CCR division 4.5, chapter 11, Appendix XII(b)

Is oil-contaminated material California code 223?

Code	When it fits
223	The hazardous material holds oil but is neither free waste oil nor oil-water separator sludge.
221	The discarded material is oil itself, including oil drained separately from a filter.
222	The hazardous residue is sludge from separating oil and water.
Drained metal-filter recycling route	A qualifying metal filter has no free-flowing oil or fuel and meets the recycling and management conditions.

The filter exemption needs recycling, plus set storage, labeling and transfer records. It doesn't cover non-metal filters, filters sent for disposal, or the drained liquid and residue. Those need their own hazardous determinations. A restricted code takes priority over 223.

Which wastes take California code 223?

Waste	When it’s 223
Used oil filters	Oil remains in the filter or residue and the recycling exemption doesn't apply.
Oily rags and absorbent	Oil contaminates the cloth or absorbent, so the waste is neither free oil nor separator sludge.

Which codes sit beside California code 223?

Code	What it is
212	Oxygenated solvent
213	Petroleum or hydrocarbon solvent
214	Other solvent mixture
231	Pesticide rinse water
232	Pesticide and pesticide-production waste
241	Tank-bottom waste
251	Still bottoms with halogenated organics
252	Other still-bottom waste