Waste Designation Decision Matrix: Gathering Information

The first step in this process is to examine what information you have available.

  1. Does the waste or product container have labels listing hazards or ingredients?
  2. Do you have a Material Data Safety Sheet (MSDS) available?
  3. Do you know who the manufacturer is? Can you contact them?
  4. Is there anything you can tell about this waste from its appearance?

Those are just some very good sources of information that are available for free. Knowledge of your process is also key. If you know what went INTO your process, you can make assumptions of what came OUT as a waste.

Using "Process Knowledge"

Think what went into the waste and compare it to the lists and characteristics. This method is called using process knowledge. You may use any information you have about the waste including product labels, MSDSs, etc. to determine if the waste is on a list or is characteristically hazardous.

Note: If you use process knowledge to make a hazardous waste determination, you must keep documentation of the information you rely on and the steps taken when making your determination.

If you do not have the necessary information to properly classify your waste, contact a laboratory in your area, they will perform the necessary testing and provide the results. It will be YOUR responsibility to apply that information properly in the waste classification process.