(16)It is important to identify and separate waste consisting of, containing or contaminated by POPs at source in order to minimise the spread of those chemicals into other waste. Directive 2008/98/EC establishes Union rules on the management of hazardous waste, obliging Member States to take the necessary measures to require that establishments and undertakings which dispose of, recover, collect or transport hazardous waste, do not mix different categories of hazardous waste or mix hazardous waste with non-hazardous waste.