4.
DIRECTIVE 2008/50/EC OF THE EUROPEAN PARLIAMENT AND OF THE COUNCIL of 21 May 2008 on ambient air quality and cleaner air for Europe · European Union
Each Member State shall, in accordance with Annex III, ensure that the distribution and the number of sampling points on which the average exposure indicator for PM_(2,5) is based reflect the general population exposure adequately. The number of sampling points shall be no less than that determined by application of Section B of Annex V.
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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.