K143 RCRA waste code Sludge from stills & decanters that recover benzene-type light oil.

Free, no account
Based on 40 CFR 261.32 and EPA hazardous-waste rules
Nothing is stored

K-listed waste
Light-oil recovery residue from coke by-products

Industry: Coking.

Toxic K-listed waste from coking. Light oil recovery residues from stills, decanters & wash oil units handling coke by-products.

Is K143 hazardous waste?

Yes. K143 is a nonacute K-listed hazardous waste when the source process and waste stream match. Its federal hazard code is (T), for toxicity.

K143 is listed by source, so how and where the waste arose decides it, not a concentration test alone. A test may add a characteristic code but doesn't remove the listing. On a required hazardous waste manifest, put K143 in Item 13. See VSQG exemptions and empty-container rules.

What does K143 cover?

Residue from recovering light oil, including residue from stills, decanters and wash oil recovery units, in recovering coke by-products from coal. The 261.4(a)(10) exclusion needs the residue recycled to coke ovens or tar recovery, or mixed with coal tar, with no land disposal before recycling.

Hazard code: (T), toxicity
Industry: Coking
Rule: 40 CFR 261.32

Is coke light-oil recovery residue K143 or another code?

Code	When it fits
K143	It is light-oil recovery residue from coke by-products, including still, decanter or wash-oil-unit residue.
K144	It is wastewater sump residue from light oil refining, including intercepting or contamination sump sludge from recovering coke by-products.
K141	It is coal-tar recovery residue, including collecting-sump residue from coke or coke-by-product production, but not K087 sludge.

The industry, production step and waste form tell these K listings apart, not chemical content. The rows show nearby listed streams, not every code that can apply. Add any characteristic or other listing that also fits, as one waste can carry more than 1 federal code.

Which wastes take K143?

Waste	When it’s K143
Coke light-oil recovery residue	It is residue from recovering light oil from coke by-products.

Which codes sit beside K143?

Code	What it is
K131	Reactor water and spent acid from making methyl bromide fumigant
K132	Spent absorbent and separator solids from making methyl bromide fumigant
K136	Bottom purification residue from making ethylene dibromide
K142	Tar-tank residue from making coke or recovering coke by-products
K145	Naphthalene recovery residue from coke by-products
K147	Tar-tank residue from refining coal tar
K148	Distillation residue from coal tar
K149	Bottom distillation residue from chlorinated toluenes or benzoyl chlorides