K170 RCRA waste code Sludge & filter solids from refinery tanks holding heavy slurry oil.

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

K-listed waste
Slurry-oil tank sediment and filter solids from a petroleum refinery

Industry: Petroleum refining.

Toxic K-listed waste from petroleum refining. Clarified slurry oil tank sediment & in-line filter or separation solids.

Is K170 hazardous waste?

Yes. K170 is a nonacute K-listed hazardous waste when the waste comes from the named process and stream. The federal table gives it hazard code (T), meaning toxicity.

Source decides a K listing, not a concentration test. A test can add a characteristic code, but it doesn't remove the K170 listing.

On a required hazardous waste manifest, put K170 in Item 13. See VSQG exemptions and empty-container rules.

What does K170 cover?

Sediment from clarified slurry-oil tanks, in-line filter or separation solids, or both, from petroleum refining. The 261.4(a)(12)(i) recycling exclusion needs the material put back into refining with no earlier land placement or speculative accumulation. Thermal cracking also needs the coke to be nonhazardous.

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

Is refinery slurry-oil sediment always K170?

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

The industry, production step and waste form tell these K listings apart, not the chemicals alone. The rows show nearby listed streams, not every code that could fit. Add any characteristic or other listing that also fits, because one waste can carry more than 1 federal code.

When does the old-disposal exception affect K170?

Under 261.4(b)(15), landfill leachate or gas condensate from K170 waste disposed of before February 8, 1999 is excluded only if it has no hazardous waste characteristic, comes from no other listed hazardous waste, and its discharge is regulated under Clean Water Act section 307(b) or 402. From February 13, 2001, holding it in a surface impoundment before discharge ends the exclusion. The one exception is temporary emergency storage in a double-lined impoundment, followed by compliant management.

Which wastes take K170?

Waste	When it’s K170
Petroleum refinery slurry-oil sediment	Clarified slurry-oil tank sediment or in-line filter solids from petroleum refining.