# Council Directive 1999/31/EC of 26 April 1999 on the landfill of waste, Division 2: Meteorological data

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

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Should Member States decide that water balances are an effective tool for evaluating whether leachate is building up in the landfill body or whether the site is leaking, it is recommended that the following data are collected from monitoring at the landfill or from the nearest meteorological station, as long as required by the competent authority in accordance with Article 13(c) of this Directive:
Or through other suitable methods.
Operation phase
After-care phase
1.1. Volume of precipitation
daily
daily, added to monthly values
1.2. Temperature (min., max., 14.00 h CET)
daily
monthly average
1.3. Direction and force of prevailing wind
daily
not required
1.4. Evaporation (lysimeter)
daily
daily, added to monthly values
1.5. Atmospheric humidity (14.00 h CET)
daily
monthly average

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Source: https://www.legislation.gov.uk/eudr/1999/31/annex/III/division/2 (the official version)
Page: https://openlegislation.uk/eu-directive-1999-31/annex-III/division-2
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.