“Development shall not begin until a surface water drainage scheme for water passing through the site, based on sustainable drainage principles has been submitted to and approved by the Local Authority. This must include details of how the surface water run off rate of 8.2 litres/second/ha will be maintained for up to and including the 1 in 100 year (plus climate change) rainfall event. Reason: To prevent flooding by ensuring the satisfactory storage/disposal of surface water from the site.”
“The drainage officers were, and are, satisfied that, although there will be a new 12 metre length of culvert within the site, there will be no change to either the quantity of flow or the discharge point. For this reason, and having regard to the underlying basis that the purpose of the drainage proposals for this and any other site must not be to create new flooding risks or to worsen any existing flooding risk, not to put in place a scheme with the purpose of alleviating any existing flood risk as the latter would involve looking at a wider set of parameters which are outside the responsibility of developers, the Drainage officer’s advice was that your client’s concerns were not such that any decision on the submitted drainage details should be delayed, let alone those details should be rejected.”
“Key to that challenge is that the Defendant gave its approval on the basis the submitted scheme did not create any new flooding risks or worsen any existing flooding risk (“no worse”). As set out below, the Claimant submits (among other things) that the Defendant’s decision was based on a misdirection as to legal requirements in place (including that “no worse” was not here the only requirement) and was in any event an unsustainable conclusion arising from a failure to have regard to material consideration.”
“When determining planning applications, local planning authorities should ensure that flood risk is not increased elsewhere …”
“The drainage officers were, and are, satisfied that, although there will be a new 12 metre length of culvert within the site, there will be no change to either the quantity of flow or the discharge point.”
“The approved proposal does not involve the excavation of the existing watercourse to alter its existing alignment or profile up to the point of the new 1200 millimetre diameter culvert you refer to. That part of the watercourse, and the rest of the watercourse within the site beyond that culvert will not be altered at all, the only work to it being the removal of debris, and the only change in that length being a new culvert under the estate road.”
“1….the Claimants were local residents, who also claim to act in the name of a local group known as “Say No to Morrisons Group”… 2. I should note that the legal status and even the membership of the "group", remain obscure, for reasons that have not been satisfactorily explained. However, for the limited purpose of deciding the appeal (and without prejudice to any other issues, for example as to costs), it is enough that Mr Berky has standing to proceed in his own right.”