(20)

in Section 2.4.3, under ‘operational monitoring’, the paragraph on ‘Frequency of monitoring’ is replaced by the following: ‘Frequency of monitoring Operational monitoring shall be carried out for the periods between surveillance monitoring programmes at a frequency sufficient to detect the impacts of relevant pressures, including, where relevant, seasonal variation in the use of substances and of short- and long-term variations in recharge that might affect chemical status parameters, and at a minimum frequency of once per year, unless greater intervals would be justified on the basis of technical knowledge and expert judgement, in particular if it can be shown that over successive years, no exceedance or sustained upward trend has been detected for a particular parameter.’;

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Source: EUR-Lex (Cellar) · retrieved 2026-10-08 · Text as adopted (Official Journal); later amendments are not incorporated in this text.