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Council Directive 1999/31/ECShow full title

Council Directive 1999/31/EC of 26 April 1999 on the landfill of waste

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B.MonitoringU.K.

The parameters to be analysed in the samples taken must be derived from the expected composition of the leachate and the groundwater quality in the area. In selecting the parameters for analysis account should be taken of mobility in the groundwater zone. Parameters could include indicator parameters in order to ensure an early recognition of change in water quality(1).

a

If there are fluctuating groundwater levels, the frequency must be increased.

b

The frequency must be based on possibility for remedial actions between two samplings if a trigger level is reached, i.e. the frequency must be determined on the basis of knowledge and the evaluation of the velocity of groundwater flow.

c

When a trigger level is reached (see C), verification is necessary by repeating the sampling. When the level has been confirmed, a contingency plan (laid down in the permit) must be followed.

Operation phaseAfter-care phase
Level of groundwaterevery six monthsaevery six monthsa
Groundwater compositionsite-specific frequencyb csite-specific frequencyb c
(1)

Recommended parameters: ph, TOC, phenols, heavy metals, fluoride, AS, oil/hydrocarbons.

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