K144 RCRA waste code Sump sludge from refining benzene-type light oil at coke plants.

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Based on 40 CFR 261.32 and EPA hazardous-waste rules
Nothing is stored

K-listed waste
Sump residue from refining light oil from coke by-products

Industry: Coking.

Toxic K-listed waste from coking. Wastewater sump residues from light oil refining, including intercepting sump sludges.

Is K144 hazardous waste?

Yes. K144 is a nonacute K-listed hazardous waste when the source process and waste stream match. Its federal hazard code is (T), for toxicity.

K144 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 K144 in Item 13. See VSQG exemptions and empty-container rules.

What does K144 cover?

Wastewater sump residue from refining light oil, including intercepting or contamination sump sludge, 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 sump residue K144 or another code?

Code	When it fits
K144	It is wastewater sump residue from light oil refining, including intercepting or contamination sump sludge from recovering coke by-products.
K143	It is light-oil recovery residue from coke by-products, including still, decanter or wash-oil-unit residue.
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 K144?

Waste	When it’s K144
Coke light-oil wastewater-sump residue	It is wastewater-sump residue from refining light oil in coke by-product recovery.

Which codes sit beside K144?

Code	What it is
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
K150	Recovery residue from chlorinated toluene or benzoyl chloride production