Waste Designation Decision Matrix - P or U Codes
This matrix is provided as an assistance tool. It cannot be used as a substitute for following applicable city, state, and federal laws.
You have a hazardous waste.
You have determined that your waste is listed in the P or U lists. To view the lists, please go to 40 CFR 261.33 .
Write down the applicable P or U codes in your list of codes that apply to this waste.
If you have a P-listed waste, you have an acutely hazardous waste and have extra regulatory responsibility.
To determine if additional waste codes apply