1.
The upper and lower assessment thresholds for benzene and carbon monoxide shall be those laid down in Section I of Annex III. The classification of each zone or agglomeration for the purposes of Article 6 of Directive 96/62/EEC shall be reviewed at least every five years in accordance with the procedure laid down in Section II of Annex III to this Directive. Classification shall be reviewed earlier in the event of significant change in activities relevant to ambient concentrations of benzene or carbon monoxide.
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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.