# The East Midlands Gateway Rail Freight Interchange and Highway Order 2016, Paragraph 17: Flood risk and surface water drainage

Extent: E+W+S

(1) No phase of the authorised development (with the exception of the highway works which are governed by requirements 4 and 5 and Schedules 19 and 20 (protection of interests)) may commence until a surface water drainage scheme for that phase based on sustainable drainage principles and an assessment of the hydrological and hydrogeological context of the development in accordance with the Surface Water Drainage Strategy in Chapter 8 of the environmental statement (Document 5.2) has been submitted to and approved in writing by the local planning authority or such other approval process that is put in place under the Flood and Water Management Act 2010. The scheme must include—
(a) limiting the surface water run-off generated by all rainfall events up to the 1:100 year plus 20% (for climate change) critical rain storm so that it will not exceed the peak run-off rate from the undeveloped site and not increase the risk of flooding off-site;
(b) provision of surface water run-off attenuation storage to accommodate the difference between the allowable discharge rate and all rainfall events up to the 1:100 year plus 20% (for climate change) critical rain storm;
(c) detailed design (plans, cross sections and calculations) in support of any surface water drainage scheme, including details of any attenuation system, and the outfall arrangements; and
(d) details of how the scheme must be monitored, maintained and managed after completion.
(2) The surface water drainage scheme must be implemented in accordance with the details approved by the local planning authority or in accordance with any variations to the details agreed in writing by the local planning authority prior to the completion of the authorised development.

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Source: https://www.legislation.gov.uk/uksi/2016/17/schedule/2/paragraph/17 (the official version)
Page: https://openlegislation.uk/east-midlands-gateway-rail-freight-interchange-and-highway-order-2016/schedule-2/paragraph-17
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.