California waste code 731 Liquid with 50 mg/L of PCBs or more.

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Based on California Title 22 and DTSC guidance
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Restricted wasteCalifornia restricted wastes
Restricted PCB liquid

Liquid polychlorinated biphenyls are 50 mg/L or more, taking priority over general PCB code 261.

Restricted hazardous waste for liquids with polychlorinated biphenyls at 50 mg/L or more. It outranks general PCB code 261.

Is California code 731 hazardous waste?

Not from the code alone. Code 731 is a restricted waste code, so it wins over any non-restricted code that also fits. Choose it after the hazardous waste determination. It doesn't prove the waste is hazardous or decide its federal RCRA status.

If a shipment needs the Uniform Hazardous Waste Manifest, enter 731 in Item 13 for its waste line. Use one California code, plus the federal RCRA codes when the waste is federally hazardous.

RCRA waste meets a federal listing or characteristic and has no federal exclusion. 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 record.

What does California code 731 cover?

This restricted entry is hazardous liquid with a representative polychlorinated biphenyl (PCB) concentration of 50 mg/L or more. It covers separated PCB liquid, not an intact article just because it might contain that liquid.

Threshold: 50 mg/L or more PCBs in liquid
Official wording: 22 CCR division 4.5, chapter 11, Appendix XII(b)

Is PCB waste California code 731 or 261?

Code	When it fits
731	Representative PCB concentration is at least 50 mg/L in the liquid.
261	The hazardous PCB material falls below the restricted liquid threshold.

The current Appendix XII threshold includes exactly 50 mg/L. DTSC's 2017 guidance says greater than 50 mg/L. If more than one restricted code fits, confirm the single California code for the waste line. The rules give no general tie-breaker.

Which wastes take California code 731?

Waste	When it’s 731
PCBs and PCB-containing material	Measured PCB concentration is 50 mg/L or more in liquid
Fluorescent light ballasts	Separated PCB liquid from the ballast holds at least 50 mg/L PCBs

Which codes sit beside California code 731?

Code	What it is
725	Restricted mercury liquid
726	Restricted nickel liquid
727	Restricted selenium liquid
728	Restricted thallium liquid
741	Restricted halogenated-organic liquid
751	Restricted halogenated-organic solids or sludge
791	Strongly acidic liquid
792	Strongly acidic metal-bearing liquid