Article 6
Waste to be accepted in the different classes of landfill Member States shall take measures in order that: (a) only waste that has been subject to treatment is landfilled. This provision may not apply to inert waste for which treatment is not technically feasible, nor to any other waste for which such treatment does not contribute to the objectives of this Directive, as set out in Article 1, by reducing the quantity of the waste or the hazards to human health or the environment; (b) only hazardous waste that fulfils the criteria set out in accordance with Annex II is assigned to a hazardous landfill; (c) landfill for non-hazardous waste may be used for: (i) municipal waste; (ii) non-hazardous waste of any other origin, which fulfil the criteria for the acceptance of waste at landfill for non-hazardous waste set out in accordance with Annex II; (iii) stable, non-reactive hazardous wastes (e.g. solidified, vitrified), with leaching behaviour equivalent to those of the non-hazardous wastes referred to in point (ii), which fulfil the relevant acceptance criteria set out in accordance with Annex II. These hazarouds wastes shall not be deposited in cells destined for biodegradable non-hazardous waste, (d) inert waste landfill sites shall be used only for inert waste.