# The Air Quality Standards Regulations (Northern Ireland) 2010, Paragraph 3


Where supplementary methods are used within a zone or agglomeration, the documentation shall include details of these methods and information on how the criteria listed in Article 7(3) of the Directive are met.

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Source: https://www.legislation.gov.uk/nisr/2010/188/schedule/1/paragraph/3 (the official version)
Page: https://openlegislation.uk/air-quality-standards-regulations-northern-ireland-2010/schedule-1/paragraph-3
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.