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3.

Where a parameter appears in the "optional determination" column in the Annexes, the Member States shall, if they consider it necessary, have the sampling and analysis of samples carried out for the environmental components indicated.

National law under this provision

1 national measure recorded under this provision, in 1 form — sign in to view the analysis.

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Source: EUR-Lex (Cellar) · retrieved 2026-10-13 · Text as adopted (Official Journal); later amendments are not incorporated in this text.