Can I use WAC data to classify my waste?

No, you cannot. Waste Acceptance Criteria (WAC) data are testing requirements that need to be met for disposal of hazardous waste to a hazardous or stable non reactive hazardous class of landfill or certain types of non-hazardous waste to an inert class of landfill (case for UK; exact application can vary from county to country). WAC data cannot be used to classify the waste as hazardous or non-hazardous.