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LLFA, in its Statutory Consultee function, SuDS, nor LCY’s objection accepted without
requires that greenfield runoff calculations site specific evidences and mitigation
should be performed using the IH124 method requirements provided to be evaluated by
as supported by the HR Wallingford UK SuDS Newham Local Planning Authority.
online greenfield runoff rate estimation tool. London City Airport guidance on biodiversity
Under the same concern greenfield and safeguarding
calculations should adopt the default
parameters (e.g. soil type) as provided by the Pre-planning advice Local SuDS requirements
UK SuDS tool as characteristic of the Newham LLFA can provide pre-application
application site location. advice for developments as part of a pre-
Newham LLFA will not object to greenfield application consultation agreement with
runoff calculations based on Flood Newham Local Planning Authority.
Estimation Handbook (FEH) methodology, Please note that a fee specific to LLFA
provided that the results are demonstrated to services is required:
be largely consistent with IH124 methodology Pre-Application Advice Guidance Note &
output from UK SuDS online tool and Charging Schedule
representative of the application site in a
pre-development greenfield condition. LLFA advice can include providing specific
information on local flood risk, review of
Newham LLFA does not accept the following information provided by developer relevant
approaches: to the SuDS design and making
• urban soil types for Greenfield runoff recommendations on compliance with local
estimation and national policies. 24
• applying urban catchment parameters to
runoff estimation The above could be arranged by contacting
Newham Planning Authority development.
Local LPA and Stakeholder Engagement control@newham.gov.uk
In addition to LLFA the Environment Agency Adoption of SuDS
and Thames Water must be consulted with
concern of flood risk, discharge consents, Newham will not adopt SuDS unless
building in proximity to flood defences undertaken by LB of Newham on council
structures and watercourses. owned land. Applicants should therefore put
in place arrangements for maintenance and
London City Airport (LCY): Under concern of end of life replacement of SuDS. Details must
risk management (i.e. bird strike) LCY may be provided to the LLFA to add to its asset
object to development proposal deemed register. There are other Risk Management
potentially to increase of bird presence in the Authorities, such as Thames Water or TFL
airport safeguard area. Whilst this concern that may be willing to consider adoption of
should be heeded and early consultation with SuDS. Early engagement with the relevant
City Airport is advised, LCY’s general concern party is critical to ensure their requirements
should never be used to scope out can be achieved.
requirement of green infrastructures, such
Newham Council SuDS D & E Guide © 2020 McCloy Consulting & Robert Bray Associates
