California waste code 171 Wet metal-laden sludge, with lead, zinc, chrome or similar.

Free, no account
Based on California Title 22 and DTSC guidance
Nothing is stored

Inorganics
Sludge containing listed metals

Hazardous metal-bearing sludge containing a metal listed in code 121.

Hazardous sludge containing 1 of the 17 metals listed under code 121. Metal dust and machining waste take code 172.

Is California code 171 hazardous waste?

Not from the code alone. The material must first be determined hazardous. California code 171 is not restricted, and a restricted code takes priority over it. A non-restricted code doesn't make a waste non-hazardous.

If the shipment needs the Uniform Hazardous Waste Manifest, enter 171 in Item 13 for the waste line. Use one California code, plus any federal RCRA codes when the waste is federally hazardous.

Waste is RCRA waste when it meets a federal listing or characteristic and no federal exclusion applies. Non-RCRA waste is hazardous under California rules only. California presumes hazardous waste is RCRA unless the generator shows it isn't, so keep that determination.

What does California code 171 cover?

This is for hazardous sludge holding any metal on code 121's list. Both metal content and sludge form count. Metal-bearing dust and hazardous machining residues belong to the paired solid code.

Rule: Appendix XII(b)
Official wording: 22 CCR division 4.5, chapter 11, Appendix XII(b)

Is metal-bearing sludge California code 171?

Code	When it fits
171	The hazardous residue is sludge and holds a metal named under code 121.
172	Metal dust holding a code 121 metal, or hazardous machining waste.
181	The hazardous inorganic solid is neither named metal waste nor another specific inorganic code.

Use a representative metal analysis together with the waste's physical form.

Which wastes take California code 171?

Waste	When it’s 171
Metal sludge	Analysis finds a listed metal in settled or pumpable residue.
Antimony-bearing waste	Antimony is in settled or pumpable residue.
Arsenic-bearing waste	Arsenic is in settled or pumpable residue.
Barium-bearing waste	Barium is in settled or pumpable residue.
Beryllium-bearing waste	Beryllium is in settled or pumpable residue.
Cadmium-bearing waste	Cadmium is in settled or pumpable residue.
Chromium-bearing waste	Chromium is in settled or pumpable residue.
Cobalt-bearing waste	Cobalt is in settled or pumpable residue.

Which codes sit beside California code 171?

Code	What it is
132	Metal-bearing water-based liquid
133	High-organic water-based liquid
134	Low-organic water-based liquid
135	Other water-based hazardous liquid
141	Unused inorganic material
151	Friable or powdered asbestos
161	Used oil-refinery cracking catalyst
162	Other used catalyst