lexiara

preamble_13

Whereas, in order for assessment of ambient air quality based on measurements made in Member States to be comparable, the location and number of sampling points and reference methods of measurement used should be specified when values are set for alert thresholds, limit values and target values;

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Source: EUR-Lex (Cellar) · retrieved 2026-10-12 · Text as adopted (Official Journal); later amendments are not incorporated in this text.