# Council Directive 1999/31/EC of 26 April 1999 on the landfill of waste, Division 3.3

Extent: E+W+S+N.I.

In addition to the geological barrier described above a leachate collection and sealing system must be added in accordance with the following principles so as to ensure that leachate accumulation at the base of the landfill is kept to a minimum:
Leachate collection and bottom sealing
Landfill category
non hazardous
hazardous
Artificial sealing liner
required
required
Drainage layer ≥ 0,5 m
required
required
Member States may set general or specific requirements for inert waste landfills and for the characteristics of the abovementioned technical means.
If the competent authority after a consideration of the potential hazards to the environment finds that the prevention of leachate formation is necessary, a surface sealing may be prescribed. Recommendations for the surface sealing are as follows:
Landfill category
non hazardous
hazardous
Gas drainage layer
required
not required
Artificial sealing liner
not required
required
Impermeable mineral layer
required
required
Drainage layer > 0,5 m
required
required
Top soil cover > 1 m
required
required.

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Source: https://www.legislation.gov.uk/eudr/1999/31/annex/I/division/3/division/3.3 (the official version)
Page: https://openlegislation.uk/eu-directive-1999-31/annex-I/division-3/division-3.3
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.