Waste Classification Procedure: 5 Questions

In order to determine if a material is a hazardous waste, we ask ourselves the following five key questions regarding the material in question:

1. Is the material a waste?
2. Is the waste excluded or exempted?
3. Is the waste listed in Article 4 or 4.1¹?
4. Is the waste listed in Appendix X²?
5. Does the waste exhibit a characteristic of hazardous waste?

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Once you have classified a material as a waste, it is considered a hazardous waste if any of these conditions apply³:

• It is not specifically excluded or exempted in HSC or 22 CCR
• It is listed as a hazardous waste in 22 CCR
• It exhibits a hazardous waste characteristic.

References

¹ 22 CCR chapter 11

² 22 CCR chapter 11

³ 22 CCR section 66261.3