California waste code 461 Settled paint solids from spray booths & paint lines.

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Based on California Title 22 and DTSC guidance
Nothing is stored

Sludges
Paint sludge

Paint solids have settled or separated into hazardous sludge.

Hazardous paint sludge, settled paint solids as from spray booths. Liquid paint and unused product take their own codes.

Is California code 461 hazardous waste?

Not from the code alone. Waste must first be found hazardous. Code 461 isn't a restricted code, but a restricted category that fits takes priority over it. A code that isn't restricted doesn't make waste non-hazardous.

When a shipment needs the Uniform Hazardous Waste Manifest, enter 461 in Item 13 for the 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, with no federal exclusion that 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 461 cover?

This code is for hazardous solids that settled or separated out of paint handling as sludge. It leaves out paint that is still a liquid product, and unused organic paint discarded before use.

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

Is paint waste California code 461, 291 or 331?

Code	When it fits
461	Paint handling produced settled or separated hazardous residue.
291	The discarded hazardous material is latex itself, rather than settled paint sludge.
331	Hazardous organic paint became waste before use because it was off-specification, aged or surplus.

Paint collection routes don't take paint sludge. Find the waste's physical state and use history before picking a material code.

Which wastes take California code 461?

Waste	When it’s 461
Paint waste	Settled or separated residue from paint handling
Paint sludge	Paint handling produced settled or separated residue

Which codes sit beside California code 461?

Code	What it is
411	Alum or gypsum sludge
421	Lime sludge
431	Phosphate sludge
441	Sulfur sludge
451	Sludge from degreasing
471	Paper-processing sludge or pulp
481	Tetraethyl-lead sludge
491	Other hazardous sludge