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art_21__para_4__text_1

Without prejudice to Article 20, in the case of zones and agglomerations referred to in paragraph 1 of this Article, Member States need to establish the air quality plan provided for in Article 23 only in so far as exceedances are attributable to PM_(10) sources other than winter-sanding or -salting of roads.

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Source: EUR-Lex (Cellar) · retrieved 2026-09-25 · Text as consolidated on 2015-09-18; changes after this date are not shown.