California waste code 723 Liquid with 500 mg/L of chrome 6 or more.

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Based on California Title 22 and DTSC guidance
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Restricted wasteCalifornia restricted wastes
Restricted hexavalent-chromium liquid

Liquid chromium(VI) is 500 mg/L or more.

Restricted hazardous waste for liquids with hexavalent chromium at 500 mg/L or more, measured in mg/L.

Is California code 723 hazardous waste?

Not from the code alone. Code 723 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 723 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 723 cover?

This restricted entry is hazardous liquid whose representative chromium(VI), or hexavalent chromium, result is 500 mg/L or more. A solid or sludge result in mg/kg can't be compared directly with this liquid concentration.

Threshold: 500 mg/L or more chromium(VI) in liquid
Official wording: 22 CCR division 4.5, chapter 11, Appendix XII(b)

Is hexavalent chromium liquid California code 723 or 132?

Code	When it fits
723	Representative chromium(VI) is at least 500 mg/L in the liquid.
132	The aqueous liquid holds chromium but doesn't meet the restricted threshold.

DTSC's 2017 guidance says greater than 500 mg/L, unlike the current inclusive threshold. The alphabetical Appendix XII table also has an extra closing parenthesis. 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 723?

Waste	When it’s 723
Chromium-bearing waste	Liquid hexavalent chromium is at or above 500 mg/L

Which codes sit beside California code 723?

Code	What it is
711	Restricted cyanide liquid
721	Restricted arsenic liquid
722	Restricted cadmium liquid
724	Restricted lead liquid
725	Restricted mercury liquid
726	Restricted nickel liquid
727	Restricted selenium liquid
728	Restricted thallium liquid