# The Infrastructure Planning (Environmental Impact Assessment) Regulations 2017, Paragraph 13


(1) Any change to or extension of development of a description listed in Schedule 1 to these Regulations (other than a change or extension falling within paragraph 21 of that Schedule) or in paragraphs 1 to 12 of this Schedule, where that development is already authorised, executed or in the process of being executed, and the change or extension may have significant adverse effects on the environment;
(2) development of a description mentioned in Schedule 1 to these Regulations undertaken exclusively or mainly for the development and testing of new methods or products and not used for more than two years.

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Source: https://www.legislation.gov.uk/uksi/2017/572/schedule/2/paragraph/13 (the official version)
Page: https://openlegislation.uk/infrastructure-planning-environmental-impact-assessment-regulations-2017/schedule-2/paragraph-13
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.