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 4.1?
  4. Is the waste listed in Appendix X?
  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 apply:

  • It is not specifically excluded or exempted from regulations
  • It is listed as a hazardous waste in the California Code of Regulations
  • It exhibits a hazardous waste characteristic.
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