K141 RCRA waste code Tarry sludge from recovering coal tar at coke ovens.

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

K-listed waste
Process residue from recovering coal tar

Industry: Coking.

Toxic K-listed waste from coking. Residues from coal tar recovery, including collecting sump residues.

Is K141 hazardous waste?

Yes. K141 is a nonacute K-listed hazardous waste when the source process and waste stream match. Its federal hazard code is (T), for toxicity.

K141 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 K141 in Item 13. See VSQG exemptions and empty-container rules.

What does K141 cover?

Residue from recovering coal tar, including collecting sump residue from making coke from coal or recovering coke by-products. It does not include K087 decanter-tank tar sludge. 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 coal-tar recovery residue K141 or another code?

Code	When it fits
K141	It is coal-tar recovery residue, including collecting-sump residue from coke or coke-by-product production, but not K087 sludge.
K144	It is wastewater sump residue from light oil refining, including intercepting or contamination sump sludge from recovering coke by-products.
K142	It is tar storage tank residue from making coke or recovering coke by-products.

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 K141?

Waste	When it’s K141
Coal-tar recovery process residue	It is process residue from recovering coal tar in coke production or coke by-product recovery, excluding K087.

Which codes sit beside K141?

Code	What it is
K125	Production solids from a dithiocarbamate pesticide ingredient
K126	Dust and floor sweepings from making or formulating dithiocarbamate pesticides
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
K143	Light-oil recovery residue from coke by-products
K145	Naphthalene recovery residue from coke by-products
K147	Tar-tank residue from refining coal tar