# The Air Quality Standards (Wales) Regulations 2007, Paragraph 2: Point sources


For the assessment of pollution in the vicinity of point sources, the number of sampling points for fixed measurement should be calculated taking into account emission densities, the likely distribution patterns of ambient-air pollution and the potential exposure of the population.

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Source: https://www.legislation.gov.uk/wsi/2007/717/schedule/6/paragraph/2 (the official version)
Page: https://openlegislation.uk/air-quality-standards-wales-regulations-2007/schedule-6/paragraph-2
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.