art_10__para_6

6. A Member State may choose not to measure black carbon, ultrafine particles or ammonia in half of its monitoring supersites at rural background locations if the number of its monitoring supersites at rural background locations exceeds the number of its monitoring supersites at urban background locations by at least a ratio of 2:1, as long as the selection of its monitoring supersites is representative for those pollutants.

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Source: EUR-Lex (Cellar) · retrieved 2026-10-16 · Text as adopted (Official Journal); later amendments are not incorporated in this text.