European Waste Catalogue (EWC) Code
05 01 09* – sludges from on-site effluent treatment containing hazardous substances
Chapter
05Wastes from petroleum refining, natural gas purification and pyrolytic treatment of coal
Sub-Chapter
05 01Wastes from petroleum refining
Individual Entry
05 01 09*
sludges from on-site effluent treatment containing hazardous substances
Mirror Hazardous
* Signifies Hazardous Waste

Mirror Hazardous - Some wastes are not automatically hazardous or non-hazardous - they are called mirror entry wastes. These wastes have a hazardous waste entry (or entries) marked with an asterisk (*), and an alternative non-hazardous waste entry (or entries) not marked with an asterisk