Schedule 25B, paragraph 5(1)

Subject to paragraph 6, the regulator must exercise its relevant functions in relation to specified generators so as to ensure that they are operated, from the permitting date, in such a way that— there is compliance with an emission limit value for nitrogen oxides of 190mg/Nm3; where secondary abatement is required to ensure compliance with the requirement in paragraph (a), the emission limit value for nitrogen oxides is met— and in every case emissions must be monitored at least every three years; in the case of a Tranche A generator or a Tranche B generator which was, but has ceased to be, a Tranche A generator, within 20 minutes of the specified generator commencing operation, or in the case of any other Tranche B generator, within 10 minutes of the specified generator commencing operation, there is no persistent emission of dark smoke, where “dark smoke” has the meaning given in section 3(1) of the Clean Air Act 1993.

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Source: legislation.gov.uk · retrieved 2026-07-30