# The Planning (Hazardous Substances) Regulations 2015, Paragraph 16: Presence of small quantities of substances


The presence of a quantity of a hazardous substance—
(a) in a location where it cannot act as an initiator of a major accident elsewhere on the relevant site, and
(b) which is equal to or less than two per cent of the relevant controlled quantity for that substance,
is not to be taken into account when calculating the quantity of a hazardous substance present on, over or under land for any purpose of the Act or these Regulations.

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Source: https://www.legislation.gov.uk/uksi/2015/627/schedule/2/paragraph/16 (the official version)
Page: https://openlegislation.uk/planning-hazardous-substances-regulations-2015/schedule-2/paragraph-16
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.