K049 RCRA waste code Toxic solids from the oily emulsion in refinery slop tanks.

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

K-listed waste
Slop-oil emulsion solids from a petroleum refinery

Industry: Petroleum refining.

Toxic K-listed waste from petroleum refineries. Solids from slop oil emulsion, the oily mix collected in refinery slop tanks.

Is K049 hazardous waste?

Yes. K049 is nonacute K-listed hazardous waste when the waste comes from the named process and matches the named stream. The federal table gives it hazard code (T), toxicity.

A K listing depends on where and how the waste was made, not on a test result alone. A test may add a characteristic code, but it doesn't remove the listing.

On a required hazardous waste manifest, put K049 in Item 13. Check the VSQG exemptions and empty-container rules too.

What does K049 cover?

Slop oil emulsion solids from petroleum refining. The 261.4(a)(12)(i) recycling exclusion applies only if the solids goes back into refining with no land placement or speculative accumulation first. For thermal cracking, the coke must also be nonhazardous.

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

Is refinery slop-oil emulsion solid always K049?

Code	When it fits
K049	Slop oil emulsion solids from the petroleum refining industry.
K048	Dissolved air flotation (DAF) float from the petroleum refining industry.
K051	API separator sludge from the petroleum refining industry.
K052	Tank bottoms (leaded) from the petroleum refining industry.
K169	Crude oil storage tank sediment from petroleum refining operations.
K170	Clarified slurry-oil tank sediment, in-line filter or separation solids, or both, from petroleum refining.

The industry, production step and waste form tell these K listings apart, not the chemicals in the waste. The rows above are only the nearby listed streams, so also add any characteristic or other listing that fits. One waste can carry more than one federal code.

Which wastes take K049?

Waste	When it’s K049
Petroleum refinery slop-oil solids	It is a slop-oil emulsion solid from the petroleum refining industry

Which codes sit beside K049?

Code	What it is
K043	2,6-dichlorophenol waste from making the herbicide 2,4-D
K044	Wastewater sludge from making or processing explosives
K045	Spent carbon from treating explosives wastewater
K046	Wastewater sludge from making or loading lead-based explosive initiators
K047	Pink or red wastewater from TNT operations
K050	Refinery heat-exchanger cleaning sludge
K060	Lime sludge from a coke-plant ammonia still
K061	Electric-furnace dust or sludge from primary steelmaking