# The Air Quality Limit Values (Wales) Regulations 2001, Regulation 6: Review of classifications


(1) The National Assembly shall review the classification of each zone under regulation 5 at least once in every five years in accordance with Part II of Schedule 2.
(2) The National Assembly shall also review the classification of any zone under regulation 5 in the event of significant changes in activities affecting ambient concentrations in the zone of any of the relevant pollutants.

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Source: https://www.legislation.gov.uk/wsi/2001/2683/regulation/6 (the official version)
Page: https://openlegislation.uk/air-quality-limit-values-wales-regulations-2001/regulation-6
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.