Paragraph 65 Sustainable drainage systems: management and maintenance
Grand Opening must not take place unless—
the site controller has submitted to the Secretary of State for approval a maintenance and management plan and a maintenance schedule for the system of sustainable drainage serving authorised works that is in operation at the date of Grand Opening,
the plan and schedule submitted are accompanied by a report from a suitably qualified expert—
verifying that they are in substantial accordance with Annex 3 (WSP SuDS maintenance plan) to the drainage strategy, or
explaining how they depart from the details set out in that document and why such departures are necessary or expedient, for example, for reasons connected with the operation of authorised works by statutory undertakers, and
the Secretary of State has endorsed the plan and schedule.
The site controller must—
keep the plan and schedule under review in the light of changes—
in the potential impacts on drainage of authorised works, whether constructed before or after Grand Opening, or
that are made to the system of sustainable drainage from time to time to address those impacts;
seek the Secretary of State’s endorsement of such modifications to the plan or schedule as may be required to accommodate an impact or change referred to in paragraph (a).
If the site controller seeks the Secretary of State’s endorsement of a modification to an endorsed plan and schedule, it must include with its request a report from a suitably qualified expert verifying and explaining the matters set out in sub-paragraph (1)(b)(i) and (ii) in respect of the plan and schedule as they are proposed to be modified.
The Secretary of State must not decide to endorse a plan or schedule submitted under sub-paragraph (1)(a), or a modification of such a plan or schedule, unless the Secretary of State is satisfied that that decision meets the condition specified in article 7(7) (modification of reference documents, controlling documents and endorsement conditions).