California waste code 581 Liquid, sludge or solid taken out of exhaust gas.

Free, no account
Based on California Title 22 and DTSC guidance
Nothing is stored

Miscellaneous
Waste from a gas scrubber

Gas-cleaning equipment produced the hazardous liquid, sludge or solid.

Waste from a gas scrubber, the hazardous liquid, sludge or solid left by gas-cleaning equipment. Baghouse dust has its own code.

Is California code 581 hazardous waste?

Not from the code alone. First decide the material is hazardous. Code 581 isn't restricted, so a restricted category that fits wins over it. A non-restricted code doesn't make a waste nonhazardous.

If a shipment needs the Uniform Hazardous Waste Manifest, enter 581 in Item 13 for its waste line. Use one California code, plus the federal RCRA codes when the waste is federally hazardous.

RCRA waste meets a federal listing or characteristic and has no federal exclusion. 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 record.

What does California code 581 cover?

This entry is hazardous residue from a scrubber, which removes contaminants from a gas stream by contact with liquid or another medium. It can be liquid, sludge or solid. The equipment and the source process set the category.

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

Is gas scrubber waste California code 581 or 591?

Code	When it fits
581	A scrubber removed contaminants from a gas stream and produced the waste.
591	A baghouse collected the particulate on fabric filters.
571	Combustion or retorting produced fly ash, furnace-bottom ash or retort ash.

The equipment that produced the waste decides between these entries.

Which wastes take California code 581?

Waste	When it’s 581
Gas scrubber waste	The residue came from removing contaminants from a gas stream.

Which codes sit beside California code 581?

Code	What it is
531	Chemical toilet waste
541	Photographic processing chemicals
551	Discarded laboratory chemicals
561	Discarded detergent or soap
611	Hazardous contaminated soil
612	Collected household hazardous waste
613	Vehicle-shredder residue
614	Manifested treated wood waste