i. Listed Waste

Listed Wastes – The EPA has four RCRA waste lists. Two lists are for spent (used/consumed) materials and the other lists are for unused, expired, and/or out of specification materials.  If a waste material is found on any of the EPA lists it will have a waste code assigned to it and will be a hazardous waste.  The four lists are:

F List – The “F” does not stand for flammable. 

1. Is the material spent material?
   • Spent means that the material has been used for a purpose and is no longer useful due to contamination or some other factor rendering it not useful.
2. Is the material found in the EPA Search?
   • Make note of the material’s waste code identified on the EPA search, it will be required on the pickup request.
3. If Yes to both, the material is a hazardous waste
4. Commonly used F listed solvents would be solvents such as acetone, methanol, toluene, etc... used in chemical reactions or for cleaning processes

K List – Not used at Baylor University!

1. Meant for specific industries
2. Baylor is nonindustrial, so the K List will not apply to this institution

U List

1. Is the material UNUSED?
2. Is the material expired or degraded?
   • This includes spill cleanup debris of an unused/expired/degraded material found on the U List
3. Is the material a single chemical and found in the EPA Search?
   • If the material is a combination of chemicals, is the chemical found on the U List the “sole active ingredient”? 
   • Make note of the material’s waste code identified on the EPA search, it will be required on the pickup request.
4. If yes to a through c, the material is a hazardous waste
5. If a material is found on the U List BUT has been used/consumed in some way, is no longer in its original container, or has been added to/with other materials, the U List waste code is no longer applicable!
6. Commonly examples of U listed wastes are unused solvents that have expired or are otherwise not useful

P List – The only difference between U List and P List wastes is that materials on the P List are considered acutely toxic.

1. Is the material UNUSED? NOTE:  Even the empty container that once held a P-Listed material is considered a hazardous waste and must be disposed of as hazardous waste.

2. Is the material expired or degraded?

   • This includes spill cleanup debris of an unused/expired/degraded material found on the P List

3. Is the material a single chemical and found in the EPA Search?
   • If the material is a combination of chemicals, is the chemical found on the P List the “sole active ingredient”? 
   • Make note of the material’s waste code identified on the EPA search, it will be required on the pickup request.
4. If yes to a through c, the material is a hazardous waste
5. If a material is found on the P List BUT has been used/consumed in some way, is no longer in its original container, or has been added to/with other materials, the P List waste code is no longer applicable!
6. Cyanide salts, sodium azide, and epinephrine are good examples of P listed items.  Remember that even when these items are fully consumed, the empty container itself is a P listed hazardous waste.