California waste code 222 Sludge left when oil is separated from water.

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Based on California Title 22 and DTSC guidance
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Organics
Oil-water separator sludge

The sludge settled or separated during removal of oil from water.

Sludge that settled or separated while removing oil from water. The recovered oil is coded separately.

Is California code 222 hazardous waste?

Not from the code alone. The material must first be determined hazardous. California code 222 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 222 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 222 cover?

This is for the sludge that settles or separates when oil is removed from water, for example in a separator or interceptor. Its source separates it from free oil recovered from the same equipment. Other oily debris has its own code, and oil alone doesn't make a waste 222.

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

Is oil-water separator sludge California code 222?

Code	When it fits
222	The hazardous sludge came from separating oil from water.
221	Recovered waste oil or mixed oil, not sludge.
223	Oil contaminates another hazardous material that is neither waste oil nor oil-water separator sludge.

Profile separately collected oil and sludge by their own form and composition. A restricted code overrides this process code. Oil-water separator contents may qualify for consolidated manifesting, but that depends on the stream, the federal manifest status and the transporter's conditions, not on code 222 alone.

Which wastes take California code 222?

Waste	When it’s 222
Oil/water separator sludge	Settled residue from an oil-water separator or interceptor.

Which codes sit beside California code 222?

Code	What it is
211	Chlorinated or other halogenated solvent
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